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91 files changed, 5638 insertions, 0 deletions

diff --git a/src/OS/Makefile-AIX b/src/OS/Makefile-AIX
new file mode 100644
index 000000000..42659a6cd
--- /dev/null
+++ b/src/OS/Makefile-AIX
@@ -0,0 +1,26 @@
+# $Cambridge: exim/src/OS/Makefile-AIX,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for AIX
+# Written by Nick Waterman (nick@cimio.co.uk)
+
+# Note that the output of uname -m is probably not what Philip expected,
+# so you might end up with more build-AIX-random_number directories than
+# you expected if you have too many AIX boxes, but it seems to work... I
+# blame IBM.
+
+# Note that nowadays you have to pay extra for a compiler with AIX!
+
+CC=cc
+
+# This needs to be in here rather than os.h-AIX because of regexp stuff.
+# basically strchr is a #define, which means "extern char *strchr()"
+# ruins things. __STR31__ seems to get around this by magic. The AIX
+# include files are quite a confusing maze.
+
+CFLAGS = -D__STR31__
+
+# Needed for vfork() and vfork() only?
+
+LIBS = -lbsd
+
+# End
diff --git a/src/OS/Makefile-BSDI b/src/OS/Makefile-BSDI
new file mode 100644
index 000000000..10ea69895
--- /dev/null
+++ b/src/OS/Makefile-BSDI
@@ -0,0 +1,23 @@
+# $Cambridge: exim/src/OS/Makefile-BSDI,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for BSDI. Its antique link editor
+# cannot handle the TextPop overriding.
+
+CFLAGS=-O
+CHOWN_COMMAND=/usr/sbin/chown
+
+HAVE_SA_LEN=YES
+
+X11=/usr/X11
+XINCLUDE=-I$(X11)/include
+XLFLAGS=-L$(X11)/lib
+X11_LD_LIB=$(X11)/lib
+
+LIBS_EXIMON=-lSM -lICE -lipc
+EXIMON_TEXTPOP=
+
+EXIWHAT_PS_ARG=-ax
+EXIWHAT_EGREP_ARG='/exim( |$$)'
+EXIWHAT_KILL_SIGNAL=-USR1
+
+# End
diff --git a/src/OS/Makefile-Base b/src/OS/Makefile-Base
new file mode 100644
index 000000000..7a5cf2b43
--- /dev/null
+++ b/src/OS/Makefile-Base
@@ -0,0 +1,703 @@
+# $Cambridge: exim/src/OS/Makefile-Base,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# This file is the basis of the main makefile for Exim and friends. The
+# makefile at the top level arranges to build the main makefile by calling
+# scripts/Configure-Makefile from within the build directory. This
+# concatentates the configuration settings from Local/Makefile and other,
+# optional, Local/* files at the front of this file, to create Makefile in the
+# build directory.
+
+SHELL      = $(MAKE_SHELL)
+SCRIPTS    = ../scripts
+EDITME     = ../Local/Makefile
+EXIMON_EDITME = ../Local/eximon.conf
+
+# The compiler used for linking is normally the same as the compiler used for
+# compiling. However, by giving it a different name, we can override it from
+# the command line, and this is helpful for certain types of testing.
+
+LNCC = $(CC)
+
+
+# The default target double-checks the existence of $(EDITME) and then arranges
+# to touch it if it exists and any of the optional configuration files, which
+# depend on the os or the architecture, have been altered. The same sub-target
+# does the same thing for the eximon configuration file if it exists. Then
+# there is a check that the Makefile (the one built from this file) is
+# up-to-date. Then the os-specific source files and the C configuration file
+# are set up, and finally it goes to the main Exim target.
+
+all:    $(EDITME) checklocalmake Makefile os.h os.c config.h allexim
+
+checklocalmake:
+	@if $(SHELL) $(SCRIPTS)/newer $(EDITME)-$(OSTYPE) $(EDITME) || \
+	  $(SHELL) $(SCRIPTS)/newer $(EDITME)-$(ARCHTYPE) $(EDITME) || \
+	  $(SHELL) $(SCRIPTS)/newer $(EDITME)-$(OSTYPE)-$(ARCHTYPE) $(EDITME); \
+	then \
+	  touch $(EDITME); \
+	fi
+	@if $(SHELL) $(SCRIPTS)/newer $(EXIMON_EDITME)-$(OSTYPE) $(EXIMON_EDITME) || \
+	  $(SHELL) $(SCRIPTS)/newer $(EXIMON_EDITME)-$(ARCHTYPE) $(EXIMON_EDITME) || \
+	  $(SHELL) $(SCRIPTS)/newer $(EXIMON_EDITME)-$(OSTYPE)-$(ARCHTYPE) $(EXIMON_EDITME); \
+	then \
+	  if [ -f $(EXIMON_EDITME) ]; then touch $(EXIMON_EDITME); fi \
+	fi
+
+$(EDITME):
+	@echo " "
+	@echo "*** Please create Local/Makefile by copying src/EDITME and making"
+	@echo "*** appropriate changes for your site."
+	@echo " "
+	@false
+
+$(EXIMON_EDITME):
+	@echo " "
+	@echo "*** Please create Local/eximon.conf by copying exim_monitor/EDITME and making"
+	@echo "*** appropriate changes for your site."
+	@echo " "
+	@test ! -d ../Local && mkdir ../Local
+	@false
+
+# Check that the local Makefile is up-to-date
+
+Makefile: ../OS/Makefile-Base ../OS/Makefile-Default \
+          $(SCRIPTS)/Configure $(SCRIPTS)/Configure-Makefile $(EDITME)
+	@echo " "
+	@echo "*** Makefile needs rebuilding"
+	@echo "*** Please run \"make makefile\" at top level"
+	@echo " "
+	@false
+
+# Build (link) the os.h file
+
+os.h:
+	$(SHELL) $(SCRIPTS)/Configure-os.h
+
+# Build the os.c file
+
+os.c:   ../src/os.c
+	$(SHELL) $(SCRIPTS)/Configure-os.c
+
+# Build the config.h file.
+
+config.h: Makefile buildconfig ../src/config.h.defaults $(EDITME)
+	$(SHELL) $(SCRIPTS)/Configure-config.h
+
+
+# This target is recognized specially by GNU make. It records those targets
+# that do not correspond to files that are being built and which should
+# therefore always be run, even if the files exist. This shouldn't in fact be a
+# problem, but it does no harm. Other make programs will just ignore this.
+
+.PHONY: all allexim buildauths buildlookups buildpcre buildrouters \
+        buildtransports checklocalmake clean
+
+
+# This is the real default target for all the various exim binaries and
+# scripts, once the configuring stuff is done.
+
+allexim: config.h buildpcre $(EXIM_MONITOR) exicyclog exinext exiwhat \
+        exigrep eximstats exipick exiqgrep exiqsumm \
+        transport-filter.pl convert4r3 convert4r4 \
+        exim_checkaccess \
+        exim_dbmbuild exim_dumpdb exim_fixdb exim_tidydb exim_lock \
+        buildlookups buildrouters buildtransports \
+        buildauths exim
+
+
+# Targets for special-purpose configuration header builders
+buildconfig: buildconfig.c
+	$(CC) $(CFLAGS) $(INCLUDE) -o buildconfig buildconfig.c $(LIBS)
+
+
+# Target for the exicyclog utility script
+exicyclog: Makefile config.h ../src/exicyclog.src
+	@rm -f exicyclog
+	sed \
+	  -e "s?PROCESSED_FLAG?This file has been so processed.?"\
+	  -e "/^# /p" \
+	  -e "/^# /d" \
+	  -e "s?CONFIGURE_FILE_USE_NODE?$(CONFIGURE_FILE_USE_NODE)?" \
+	  -e "s?CONFIGURE_FILE_USE_EUID?$(CONFIGURE_FILE_USE_EUID)?" \
+	  -e "s?CONFIGURE_FILE?$(CONFIGURE_FILE)?" \
+	  -e "s?BIN_DIRECTORY?$(BIN_DIRECTORY)?" \
+	  -e "s?EXICYCLOG_MAX?$(EXICYCLOG_MAX)?" \
+	  -e "s?COMPRESS_COMMAND?$(COMPRESS_COMMAND)?" \
+	  -e "s?COMPRESS_SUFFIX?$(COMPRESS_SUFFIX)?" \
+	  -e "s?CHOWN_COMMAND?$(CHOWN_COMMAND)?" \
+	  -e "s?CHGRP_COMMAND?$(CHGRP_COMMAND)?" \
+	  -e "s?MV_COMMAND?$(MV_COMMAND)?" \
+	  -e "s?RM_COMMAND?$(RM_COMMAND)?" \
+	  ../src/exicyclog.src > exicyclog-t
+	@mv exicyclog-t exicyclog
+	@chmod a+x exicyclog
+	@echo ">>> exicyclog script built"; echo ""
+
+# Target for the exinext utility script
+exinext: Makefile config.h ../src/exinext.src
+	@rm -f exinext
+	sed \
+	  -e "s?PROCESSED_FLAG?This file has been so processed.?"\
+	  -e "/^# /p" \
+	  -e "/^# /d" \
+	  -e "s?CONFIGURE_FILE_USE_NODE?$(CONFIGURE_FILE_USE_NODE)?" \
+	  -e "s?CONFIGURE_FILE?$(CONFIGURE_FILE)?" \
+	  -e "s?BIN_DIRECTORY?$(BIN_DIRECTORY)?" \
+	  ../src/exinext.src > exinext-t
+	@mv exinext-t exinext
+	@chmod a+x exinext
+	@echo ">>> exinext script built"; echo ""
+
+# Target for the exiwhat utility script
+exiwhat: Makefile config.h ../src/exiwhat.src
+	@rm -f exiwhat
+	sed \
+	  -e "s?PROCESSED_FLAG?This file has been so processed.?"\
+	  -e "/^# /p" \
+	  -e "/^# /d" \
+	  -e "s?CONFIGURE_FILE_USE_NODE?$(CONFIGURE_FILE_USE_NODE)?" \
+	  -e "s?CONFIGURE_FILE?$(CONFIGURE_FILE)?" \
+	  -e "s?BIN_DIRECTORY?$(BIN_DIRECTORY)?" \
+	  -e "s?EXIWHAT_PS_CMD?$(EXIWHAT_PS_CMD)?" \
+	  -e "s?EXIWHAT_PS_ARG?$(EXIWHAT_PS_ARG)?" \
+	  -e "s?EXIWHAT_KILL_SIGNAL?$(EXIWHAT_KILL_SIGNAL)?" \
+	  -e "s?EXIWHAT_EGREP_ARG?$(EXIWHAT_EGREP_ARG)?" \
+	  -e "s?EXIWHAT_MULTIKILL_CMD?$(EXIWHAT_MULTIKILL_CMD)?" \
+	  -e "s?EXIWHAT_MULTIKILL_ARG?$(EXIWHAT_MULTIKILL_ARG)?" \
+	  ../src/exiwhat.src > exiwhat-t
+	@mv exiwhat-t exiwhat
+	@chmod a+x exiwhat
+	@echo ">>> exiwhat script built"; echo ""
+
+# Target for the exim_checkaccess utility script
+exim_checkaccess: Makefile config.h ../src/exim_checkaccess.src
+	@rm -f exim_checkaccess
+	sed \
+	  -e "s?PROCESSED_FLAG?This file has been so processed.?"\
+	  -e "/^# /p" \
+	  -e "/^# /d" \
+	  -e "s?CONFIGURE_FILE_USE_NODE?$(CONFIGURE_FILE_USE_NODE)?" \
+	  -e "s?CONFIGURE_FILE?$(CONFIGURE_FILE)?" \
+	  -e "s?BIN_DIRECTORY?$(BIN_DIRECTORY)?" \
+	  -e "s?PERL_COMMAND?$(PERL_COMMAND)?" \
+	  ../src/exim_checkaccess.src > exim_checkaccess-t
+	@mv exim_checkaccess-t exim_checkaccess
+	@chmod a+x exim_checkaccess
+	@echo ">>> exim_checkaccess script built"; echo ""
+
+# Target for the Exim monitor start-up script
+eximon: Makefile config.h ../src/eximon.src ../OS/eximon.conf-Default \
+          ../Local/eximon.conf
+	@rm -f eximon
+	$(SHELL) $(SCRIPTS)/Configure-eximon
+	sed \
+	  -e "s?PROCESSED_FLAG?This file has been so processed.?"\
+	  -e "/^# /p" \
+	  -e "/^# /d" \
+	  -e "s?CONFIGURE_FILE_USE_NODE?$(CONFIGURE_FILE_USE_NODE)?" \
+	  -e "s?CONFIGURE_FILE?$(CONFIGURE_FILE)?" \
+	  -e "s?BIN_DIRECTORY?$(BIN_DIRECTORY)?" \
+	  -e "s?BASENAME_COMMAND?$(BASENAME_COMMAND)?" \
+	  -e "s?HOSTNAME_COMMAND?$(HOSTNAME_COMMAND)?" \
+	  -e "s?X11_LD_LIBRARY?$(X11_LD_LIB)?" \
+	  ../src/eximon.src >> eximon
+	@echo ">>> eximon script built"; echo ""
+
+# Targets for utilities; these are all Perl scripts that have to get the
+# location of Perl put in them. A few need other things as well.
+
+exigrep: Makefile ../src/exigrep.src
+	@rm -f exigrep
+	sed \
+	  -e "s?PROCESSED_FLAG?This file has been so processed.?"\
+	  -e "/^# /p" \
+	  -e "/^# /d" \
+	  -e "s?PERL_COMMAND?$(PERL_COMMAND)?" \
+	  -e "s?ZCAT_COMMAND?$(ZCAT_COMMAND)?" \
+          -e "s?COMPRESS_SUFFIX?$(COMPRESS_SUFFIX)?" \
+	  ../src/exigrep.src > exigrep-t
+	@mv exigrep-t exigrep
+	@chmod a+x exigrep
+	@echo ">>> exigrep script built"; echo ""
+
+eximstats: Makefile ../src/eximstats.src
+	@rm -f eximstats
+	sed \
+	  -e "s?PERL_COMMAND?$(PERL_COMMAND)?" \
+	  ../src/eximstats.src > eximstats-t
+	@mv eximstats-t eximstats
+	@chmod a+x eximstats
+	@echo ">>> eximstats script built"; echo ""
+
+exiqgrep: Makefile ../src/exiqgrep.src
+	@rm -f exiqgrep
+	sed \
+	  -e "s?PROCESSED_FLAG?This file has been so processed.?"\
+	  -e "/^# /p" \
+	  -e "/^# /d" \
+	  -e "s?BIN_DIRECTORY?$(BIN_DIRECTORY)?" \
+	  -e "s?PERL_COMMAND?$(PERL_COMMAND)?" \
+	  ../src/exiqgrep.src > exiqgrep-t
+	@mv exiqgrep-t exiqgrep
+	@chmod a+x exiqgrep
+	@echo ">>> exiqgrep script built"; echo ""
+
+exiqsumm: Makefile ../src/exiqsumm.src
+	@rm -f exiqsumm
+	sed -e "s?PERL_COMMAND?$(PERL_COMMAND)?" \
+	  ../src/exiqsumm.src > exiqsumm-t
+	@mv exiqsumm-t exiqsumm
+	@chmod a+x exiqsumm
+	@echo ">>> exiqsumm script built"; echo ""
+
+exipick: Makefile ../src/exipick.src
+	@rm -f exipick
+	sed -e "s?PERL_COMMAND?$(PERL_COMMAND)?" \
+	  -e "s?SPOOL_DIRECTORY?$(SPOOL_DIRECTORY)?" \
+	  ../src/exipick.src > exipick-t
+	@mv exipick-t exipick
+	@chmod a+x exipick
+	@echo ">>> exipick script built"; echo ""
+
+transport-filter.pl: Makefile ../src/transport-filter.src
+	@rm -f transport-filter.pl
+	sed -e "s?PERL_COMMAND?$(PERL_COMMAND)?" \
+	  ../src/transport-filter.src > transport-filter.pl-t
+	@mv transport-filter.pl-t transport-filter.pl
+	@chmod a+x transport-filter.pl
+	@echo ">>> transport-filter.pl script built"; echo ""
+
+convert4r3: Makefile ../src/convert4r3.src
+	@rm -f convert4r3
+	sed -e "s?PERL_COMMAND?$(PERL_COMMAND)?" \
+	  ../src/convert4r3.src > convert4r3-t
+	@mv convert4r3-t convert4r3
+	@chmod a+x convert4r3
+	@echo ">>> convert4r3 script built"; echo ""
+
+convert4r4: Makefile ../src/convert4r4.src
+	@rm -f convert4r4
+	sed -e "s?PERL_COMMAND?$(PERL_COMMAND)?" \
+	  ../src/convert4r4.src > convert4r4-t
+	@mv convert4r4-t convert4r4
+	@chmod a+x convert4r4
+	@echo ">>> convert4r4 script built"; echo ""
+
+
+# Targets for final binaries; the main one has a build number which is
+# updated each time. We don't bother with that for the auxiliaries.
+
+OBJ_EXIM = acl.o child.o crypt16.o daemon.o dbfn.o debug.o deliver.o \
+        directory.o dns.o drtables.o enq.o exim.o expand.o filter.o \
+        filtertest.o globals.o \
+        header.o host.o ip.o log.o lss.o match.o moan.o \
+        os.o parse.o queue.o \
+        rda.o readconf.o receive.o retry.o rewrite.o rfc2047.o \
+        route.o search.o sieve.o smtp_in.o smtp_out.o spool_in.o spool_out.o \
+        store.o string.o tls.o tod.o transport.o tree.o verify.o \
+        local_scan.o $(EXIM_PERL)
+
+exim:   pcre/libpcre.a lookups/lookups.a auths/auths.a \
+        routers/routers.a transports/transports.a \
+        $(OBJ_EXIM) version.c
+	@echo " "
+	awk '{ print ($$1+1) }' cnumber.h > cnumber.temp
+	rm -f cnumber.h; mv cnumber.temp cnumber.h
+	$(CC) -c $(CFLAGS) $(INCLUDE) $(IPV6_INCLUDE) $(TLS_INCLUDE) version.c
+	rm -f exim
+	$(PURIFY) $(LNCC) -o exim $(LFLAGS) $(OBJ_EXIM) version.o \
+	  pcre/libpcre.a \
+	  routers/routers.a transports/transports.a lookups/lookups.a \
+	  auths/auths.a \
+	  $(LIBRESOLV) $(LIBS) $(LIBS_EXIM) $(IPV6_LIBS) $(EXTRALIBS) \
+	  $(EXTRALIBS_EXIM) $(DBMLIB) $(LOOKUP_LIBS) $(AUTH_LIBS) \
+	  $(PERL_LIBS) $(TLS_LIBS)
+	@if [ x"$(STRIP_COMMAND)" != x"" ]; then \
+	  echo $(STRIP_COMMAND) exim; \
+	  $(STRIP_COMMAND) exim; \
+	fi
+	$(EXIM_CHMOD)
+	@echo " "
+	@echo ">>> exim binary built"
+	@echo " "
+
+# The utility for dumping the contents of an exim database
+
+OBJ_DUMPDB = exim_dumpdb.o util-os.o util-store.o
+
+exim_dumpdb: $(OBJ_DUMPDB)
+	$(LNCC) $(CFLAGS) $(INCLUDE) -o exim_dumpdb $(LFLAGS) $(OBJ_DUMPDB) \
+	  $(LIBS) $(EXTRALIBS) $(DBMLIB)
+	@if [ x"$(STRIP_COMMAND)" != x"" ]; then \
+	  echo $(STRIP_COMMAND) exim_dumpdb; \
+	  $(STRIP_COMMAND) exim_dumpdb; \
+	fi
+	@echo " "
+	@echo ">>> exim_dumpdb utility built"
+	@echo " "
+
+# The utility for interrogating/fixing the contents of an exim database
+
+OBJ_FIXDB = exim_fixdb.o util-os.o util-store.o
+
+exim_fixdb:  $(OBJ_FIXDB)
+	$(LNCC) $(CFLAGS) $(INCLUDE) -o exim_fixdb $(LFLAGS) $(OBJ_FIXDB) \
+	  $(LIBS) $(EXTRALIBS) $(DBMLIB)
+	@if [ x"$(STRIP_COMMAND)" != x"" ]; then \
+	  echo $(STRIP_COMMAND) exim_fixdb; \
+	  $(STRIP_COMMAND) exim_fixdb; \
+	fi
+	@echo " "
+	@echo ">>> exim_fixdb utility built"
+	@echo " "
+
+# The utility for tidying the contents of an exim database
+
+OBJ_TIDYDB = exim_tidydb.o util-os.o util-store.o
+
+exim_tidydb: $(OBJ_TIDYDB)
+	$(LNCC) $(CFLAGS) $(INCLUDE) -o exim_tidydb $(LFLAGS) $(OBJ_TIDYDB) \
+	  $(LIBS) $(EXTRALIBS) $(DBMLIB)
+	@if [ x"$(STRIP_COMMAND)" != x"" ]; then \
+	  echo $(STRIP_COMMAND) exim_tidydb; \
+	  $(STRIP_COMMAND) exim_tidydb; \
+	fi
+	@echo " "
+	@echo ">>> exim_tidydb utility built"
+	@echo " "
+
+# The utility for building dbm files
+
+exim_dbmbuild: exim_dbmbuild.o
+	$(LNCC) -o exim_dbmbuild $(LFLAGS) exim_dbmbuild.o \
+	  $(LIBS) $(EXTRALIBS) $(DBMLIB)
+	@if [ x"$(STRIP_COMMAND)" != x"" ]; then \
+	  echo $(STRIP_COMMAND) exim_dbmbuild; \
+	  $(STRIP_COMMAND) exim_dbmbuild; \
+	fi
+	@echo " "
+	@echo ">>> exim_dbmbuild utility built"
+	@echo " "
+
+# The utility for locking a mailbox while messing around with it
+
+exim_lock: exim_lock.c
+	$(CC) -c $(CFLAGS) $(INCLUDE) exim_lock.c
+	$(LNCC) -o exim_lock $(LFLAGS) exim_lock.o  \
+	  $(LIBS) $(EXTRALIBS)
+	@if [ x"$(STRIP_COMMAND)" != x"" ]; then \
+	  echo $(STRIP_COMMAND) exim_lock; \
+	  $(STRIP_COMMAND) exim_lock; \
+	fi
+	@echo " "
+	@echo ">>> exim_lock utility built"
+	@echo " "
+
+# The X-based Exim monitor program's binary part. There's a macro for cutting
+# out the modified TextPop module, because some antique link editors cannot
+# handle the fact that it is redefining things that are found later in the
+# Xaw library.
+
+# Object modules that are the unique Eximon modules
+
+MONBIN = em_StripChart.o $(EXIMON_TEXTPOP) em_globals.o em_init.o \
+	em_log.o em_main.o em_menu.o em_queue.o em_strip.o \
+	em_text.o em_xs.o
+
+# The complete modules list also includes some specially compiled versions of
+# code from the main Exim source tree.
+
+OBJ_MONBIN = util-spool_in.o util-store.o util-string.o tod.o tree.o $(MONBIN)
+
+eximon.bin: $(EXIMON_EDITME) eximon $(OBJ_MONBIN) pcre/libpcre.a \
+            ../exim_monitor/em_version.c
+	$(CC) -o em_version.o -c \
+	  $(CFLAGS) $(XINCLUDE) -I. ../exim_monitor/em_version.c
+	$(PURIFY) $(LNCC) -o eximon.bin em_version.o $(LFLAGS) $(XLFLAGS) \
+	$(OBJ_MONBIN) -lXaw -lXmu -lXt -lXext -lX11 pcre/libpcre.a \
+	  $(LIBS) $(LIBS_EXIMON) $(EXTRALIBS) $(EXTRALIBS_EXIMON) -lc
+	@if [ x"$(STRIP_COMMAND)" != x"" ]; then \
+	  echo $(STRIP_COMMAND) eximon.bin; \
+	  $(STRIP_COMMAND) eximon.bin; \
+	fi
+	@echo " "
+	@echo ">>> exim monitor binary built"
+	@echo " "
+
+
+# Compile step for most of the exim modules. HDRS is a list of headers
+# which cause everthing to be rebuilt. PHDRS is the same, for the use
+# of routers, transports, and authenticators. I can't find a way of doing this
+# in one. This list is overkill, but it doesn't really take much time to
+# rebuild Exim on a modern computer.
+
+HDRS  =    config.h    dbfunctions.h    dbstuff.h    exim.h    functions.h    globals.h    local_scan.h    macros.h    mytypes.h    structs.h
+PHDRS = ../config.h ../dbfunctions.h ../dbstuff.h ../exim.h ../functions.h ../globals.h ../local_scan.h ../macros.h ../mytypes.h ../structs.h
+
+.SUFFIXES: .o .c
+.c.o:; $(CC) -c $(CFLAGS) -I. $(INCLUDE) $(IPV6_INCLUDE) $(TLS_INCLUDE) $*.c
+
+# This is the dummy module for use by test compiles of individual modules. It
+# contains functions such as log_write() that may be called from bits of Exim
+# in the tested code.
+
+dummies.o:       dummies.c
+
+# Compile instructions for perl.o for when EXIM_PERL is set
+
+perl.o:          $(HDRS) perl.c
+	$(PERL_CC) $(PERL_CCOPTS) $(INCLUDE) -c perl.c
+
+# Compile instructions for the database utility modules
+
+exim_dumpdb.o:   $(HDRS) exim_dbutil.c
+	$(CC) -c $(CFLAGS) $(INCLUDE) \
+				      -DCOMPILE_UTILITY \
+				      -DEXIM_DUMPDB \
+				      -o exim_dumpdb.o exim_dbutil.c
+
+exim_fixdb.o:    $(HDRS) exim_dbutil.c
+	$(CC) -c $(CFLAGS) $(INCLUDE) \
+				      -DCOMPILE_UTILITY \
+				      -DEXIM_FIXDB \
+				      -o exim_fixdb.o exim_dbutil.c
+
+exim_tidydb.o:   $(HDRS) exim_dbutil.c
+	$(CC) -c $(CFLAGS) $(INCLUDE) \
+				      -DCOMPILE_UTILITY \
+				      -DEXIM_TIDYDB \
+				      -o exim_tidydb.o exim_dbutil.c
+
+# Compile instructions for exim_dbmbuild
+
+exim_dbmbuild.o: $(HDRS) exim_dbmbuild.c
+	$(CC) -c $(CFLAGS) $(INCLUDE) -o exim_dbmbuild.o exim_dbmbuild.c
+
+# Utilities use special versions of some modules - typically with debugging
+# calls cut out.
+
+util-spool_in.o: $(HDRS) spool_in.c
+	$(CC) -c $(CFLAGS) $(INCLUDE) -DCOMPILE_UTILITY -o util-spool_in.o spool_in.c
+
+util-store.o:    $(HDRS) store.c
+	$(CC) -c $(CFLAGS) $(INCLUDE) -DCOMPILE_UTILITY -o util-store.o store.c
+
+util-string.o:   $(HDRS) string.c
+	$(CC) -c $(CFLAGS) $(INCLUDE) -DCOMPILE_UTILITY -o util-string.o string.c
+
+util-os.o:       $(HDRS) os.c
+	$(CC) -c $(CFLAGS) $(INCLUDE) \
+				      -DCOMPILE_UTILITY \
+				      -DOS_LOAD_AVERAGE \
+				      -DFIND_RUNNING_INTERFACES \
+				      -o util-os.o os.c
+
+# The local scan module depends only on its own special header, and is compiled
+# from a source whose location is set by configuration.
+
+local_scan.o:    Makefile local_scan.h ../$(LOCAL_SCAN_SOURCE)
+	$(CC) -c $(CFLAGS) -I. $(INCLUDE) -o local_scan.o ../$(LOCAL_SCAN_SOURCE)
+
+# Dependencies for the "ordinary" exim modules
+
+acl.o:           $(HDRS) acl.c
+child.o:         $(HDRS) child.c
+crypt16.o:       $(HDRS) crypt16.c
+daemon.o:        $(HDRS) daemon.c
+dbfn.o:          $(HDRS) dbfn.c
+debug.o:         $(HDRS) debug.c
+deliver.o:       $(HDRS) deliver.c
+directory.o:     $(HDRS) directory.c
+dns.o:           $(HDRS) dns.c
+enq.o:           $(HDRS) enq.c
+exim.o:          $(HDRS) exim.c
+expand.o:        $(HDRS) expand.c
+filter.o:        $(HDRS) filter.c
+filtertest.o:    $(HDRS) filtertest.c
+globals.o:       $(HDRS) globals.c
+header.o:        $(HDRS) header.c
+host.o:          $(HDRS) host.c
+ip.o:            $(HDRS) ip.c
+log.o:           $(HDRS) log.c
+lss.o:           $(HDRS) lss.c
+match.o:         $(HDRS) match.c
+moan.o:          $(HDRS) moan.c
+os.o:            $(HDRS) os.c
+parse.o:         $(HDRS) parse.c
+queue.o:         $(HDRS) queue.c
+rda.o:           $(HDRS) rda.c
+readconf.o:      $(HDRS) readconf.c
+receive.o:       $(HDRS) receive.c
+retry.o:         $(HDRS) retry.c
+rewrite.o:       $(HDRS) rewrite.c
+rfc2047.o:       $(HDRS) rfc2047.c
+route.o:         $(HDRS) route.c
+search.o:        $(HDRS) search.c
+sieve.o:         $(HDRS) sieve.c
+smtp_in.o:       $(HDRS) smtp_in.c
+smtp_out.o:      $(HDRS) smtp_out.c
+spool_in.o:      $(HDRS) spool_in.c
+spool_out.o:     $(HDRS) spool_out.c
+store.o:         $(HDRS) store.c
+string.o:        $(HDRS) string.c
+tls.o:           $(HDRS) tls.c tls-gnu.c tls-openssl.c
+tod.o:           $(HDRS) tod.c
+transport.o:     $(HDRS) transport.c
+tree.o:          $(HDRS) tree.c
+verify.o:        $(HDRS) verify.c
+
+# The module containing tables of available lookups, routers, auths, and
+# transports must be rebuilt if any of them are. However, because the makefiles
+# for the drivers are always run, we don't actually put the dependencies here,
+# because if we do, some version of "make" (e.g. IRIX) insist on rebuilding
+# drtables.o even though the .a files haven't in fact been updated. Instead
+# it is arranged that the lower-level makefiles remove drtables.o when they
+# rebuild the .a files.
+
+drtables.o:      $(HDRS) drtables.c
+
+
+# The exim monitor's private modules - the sources live in a private
+# subdirectory. The final binary combines the private modules with some
+# modules from the main exim binary.
+
+em_StripChart.o: ../exim_monitor/em_StripChart.c
+em_TextPop.o:    ../exim_monitor/em_TextPop.c
+em_globals.o:    ../exim_monitor/em_globals.c ../exim_monitor/em_hdr.h
+em_init.o:       ../exim_monitor/em_init.c    ../exim_monitor/em_hdr.h
+em_log.o:        ../exim_monitor/em_log.c     ../exim_monitor/em_hdr.h
+em_main.o:       ../exim_monitor/em_main.c    ../exim_monitor/em_hdr.h
+em_menu.o:       ../exim_monitor/em_menu.c    ../exim_monitor/em_hdr.h
+em_queue.o:      ../exim_monitor/em_queue.c   ../exim_monitor/em_hdr.h
+em_strip.o:      ../exim_monitor/em_strip.c   ../exim_monitor/em_hdr.h
+em_text.o:       ../exim_monitor/em_text.c    ../exim_monitor/em_hdr.h
+em_xs.o:         ../exim_monitor/em_xs.c      ../exim_monitor/em_hdr.h
+em_version.o:    ../exim_monitor/em_version.c ../exim_monitor/em_hdr.h
+$(MONBIN): $(HDRS)
+		 $(CC) -o $@ -c $(CFLAGS) -I. -I../exim_monitor $(INCLUDE) $(XINCLUDE) \
+		   ../exim_monitor/`echo $@ | sed 's/o$$/c/'`
+
+
+# Targets for the various libraries that Exim uses. This coding is tedious,
+# because different versions of "make" behave in different ways with regard
+# to rebuilding. If these target names are of the form pcre/libpcre.a, for
+# example, then a forcing mechanism is required to get them obeyed each time.
+# That's fine on Solaris and other systems; the rebuilding of the exim target
+# happens only if the libraries are actually rebuilt. However, on IRIX, if
+# the target is forced, the exim target gets unnecessarily rebuilt even if
+# the .a file is not. Contrariwise, if we use dummy names, they don't interact
+# with the building of exim (and eximon.bin), but for libpcre Exim doesn't get
+# rebuilt when it should. (For the others it does, because they remove
+# drtables.o when they rebuild.) To get round this, we forcibly remove the
+# binary when it needs to be rebuilt.
+
+# The PCRE regex library. Move the pcretest program to the util directory. Some
+# "clever" versions of make notice that there are two successive shell
+# commands, and they run them in the same shell. This means that we have to
+# take care to encapsulate change of directory in parentheses, so that it
+# reverts when it should.
+
+buildpcre:
+	 @(cd pcre; $(MAKE) SHELL=$(SHELL) AR="$(AR)" $(MFLAGS) CC="$(CC)" \
+	   CFLAGS="$(CFLAGS) $(PCRE_CFLAGS)" \
+	   RANLIB="$(RANLIB)" HDRS="$(PHDRS)" \
+	   INCLUDE="$(INCLUDE) $(IPV6_INCLUDE) $(TLS_INCLUDE)")
+	 @if $(SHELL) $(SCRIPTS)/newer pcre/libpcre.a exim; then \
+	   rm -f exim eximon.bin; fi
+
+# The lookups library.
+
+buildlookups:
+	 @cd lookups; $(MAKE) SHELL=$(SHELL) AR="$(AR)" $(MFLAGS) CC="$(CC)" CFLAGS="$(CFLAGS)" \
+	   RANLIB="$(RANLIB)" HDRS="$(PHDRS)" \
+	   INCLUDE="$(INCLUDE) $(IPV6_INCLUDE) $(TLS_INCLUDE) $(LOOKUP_INCLUDE)"; \
+	 echo " "
+
+# The routers library.
+
+buildrouters:
+	 @cd routers; $(MAKE) SHELL=$(SHELL) AR="$(AR)" $(MFLAGS) CC="$(CC)" CFLAGS="$(CFLAGS)" \
+	   RANLIB="$(RANLIB)" HDRS="$(PHDRS)" \
+	   INCLUDE="$(INCLUDE) $(IPV6_INCLUDE) $(TLS_INCLUDE)"; \
+	 echo " "
+
+# The transports library.
+
+buildtransports:
+	 @cd transports; $(MAKE) SHELL=$(SHELL) AR="$(AR)" $(MFLAGS) CC="$(CC)" CFLAGS="$(CFLAGS)" \
+	   RANLIB="$(RANLIB)" HDRS="$(PHDRS)" \
+	   INCLUDE="$(INCLUDE) $(IPV6_INCLUDE) $(TLS_INCLUDE)"; \
+	 echo " "
+
+# The library of authorization modules
+
+buildauths:
+	 @cd auths; $(MAKE) SHELL=$(SHELL) AR="$(AR)" $(MFLAGS) CC="$(CC)" CFLAGS="$(CFLAGS)" \
+	   RANLIB="$(RANLIB)" HDRS="$(PHDRS)" \
+	   INCLUDE="$(INCLUDE) $(IPV6_INCLUDE) $(TLS_INCLUDE)"; \
+	 echo " "
+
+# The "clean", "install", and "makefile" targets just pass themselves back to
+# the main Exim makefile. These targets will be obeyed only if "make" is obeyed
+# for them in the build directory.
+
+clean install makefile:; cd ..; $(MAKE) $(MFLAGS) build=$(build) $@
+
+# Targets for building stand-alone testing programs for basic testing of
+# some of the building blocks. These are not integrated with the makefile-
+# building targets. If you change something that is going to cause the
+# makefile to be rebuilt, you must run "make makefile" before running one
+# of these.
+
+# The testing programs use different versions of some modules - usually
+# with bits cut out that are not relevant to the test in hand. For those
+# that are used by several tests, we use a different name.
+
+sa-globals.o:    $(HDRS) globals.c
+	$(CC) -c $(CFLAGS) $(INCLUDE) -DSTAND_ALONE -o sa-globals.o globals.c
+
+sa-os.o:         $(HDRS) os.c
+	$(CC) -c $(CFLAGS) $(INCLUDE) \
+				      -DFIND_RUNNING_INTERFACES \
+				      -o sa-os.o os.c
+
+# These are the test targets themselves
+
+test_dbfn:   config.h dbfn.c dummies.o sa-globals.o sa-os.o store.o \
+	       string.o tod.o version.o
+	$(CC) -c $(CFLAGS) $(INCLUDE) -DSTAND_ALONE dbfn.c
+	$(LNCC) -o test_dbfn $(LFLAGS) dbfn.o \
+	  dummies.o sa-globals.o sa-os.o store.o string.o \
+	  tod.o version.o $(LIBS) $(DBMLIB)
+	rm -f dbfn.o
+
+test_host:   config.h host.c dns.c dummies.o sa-globals.o sa-os.o store.o \
+	       string.o tod.o tree.o
+	$(CC) -c $(CFLAGS) $(INCLUDE) -DSTAND_ALONE -DTEST_HOST host.c
+	$(CC) -c $(CFLAGS) $(INCLUDE) -DSTAND_ALONE -DTEST_HOST dns.c
+	$(CC) -c $(CFLAGS) $(INCLUDE) -DSTAND_ALONE -DTEST_HOST dummies.c
+	$(LNCC) -o test_host $(LFLAGS) \
+	  host.o dns.o dummies.o sa-globals.o os.o store.o string.o tod.o tree.o \
+	  $(LIBS) $(LIBRESOLV)
+	rm -f dummies.o  host.o dns.o
+
+test_os:     os.h os.c dummies.o sa-globals.o store.o string.o tod.o
+	$(CC) -c $(CFLAGS) $(INCLUDE) -DSTAND_ALONE os.c
+	$(LNCC) -o test_os $(LFLAGS) os.o dummies.o \
+	  sa-globals.o store.o string.o tod.o $(LIBS)
+	rm -f os.o
+
+test_parse:  config.h parse.c dummies.o sa-globals.o \
+	     store.o string.o tod.o version.o
+	$(CC) -c $(CFLAGS) $(INCLUDE) -DSTAND_ALONE parse.c
+	$(LNCC) -o test_parse $(LFLAGS) parse.o \
+	  dummies.o sa-globals.o store.o string.o tod.o version.o
+	rm -f parse.o
+
+test_string: config.h string.c dummies.o sa-globals.o store.o tod.o
+	$(CC) -c $(CFLAGS) $(INCLUDE) -DSTAND_ALONE string.c
+	$(LNCC) -o test_string $(LFLAGS) -DSTAND_ALONE string.o \
+	  dummies.o sa-globals.o store.o tod.o $(LIBS)
+	rm -f string.o
+
+# End
diff --git a/src/OS/Makefile-CYGWIN b/src/OS/Makefile-CYGWIN
new file mode 100644
index 000000000..e9b7a9ee7
--- /dev/null
+++ b/src/OS/Makefile-CYGWIN
@@ -0,0 +1,113 @@
+# $Cambridge: exim/src/OS/Makefile-CYGWIN,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# OS-specific file for Cygwin.
+
+# This file provided by Pierre A. Humblet <Pierre.Humblet@ieee.org>
+
+HAVE_ICONV = yes
+CFLAGS= -g -Wall -O2
+LIBS= -lcrypt -lresolv
+LIBS_EXIM= -liconv
+EXIWHAT_PS_ARG=-as
+EXIWHAT_KILL_SIGNAL=-USR1
+EXIWHAT_EGREP_ARG='/(EXIM|exim)[0-9. -]*$$'
+
+DBMLIB=-lgdbm
+USE_GDBM=YES
+
+# Some OS add a suffix to executables
+EXE = .exe
+
+# To add a resource file with an icon
+LIBS_EXIM +=../Local/exim_res.o
+
+# To produce a linker map
+#LIBS_EXIM+=-Wl,-Map,Exim.Map
+
+
+##################################################
+# The following is normaly set in local/Makefile.
+# Makefile.cygwin provides defaults with which the
+# precompiled version is built
+##################################################
+
+BIN_DIRECTORY=/usr/bin
+CONFIGURE_FILE=/etc/exim.conf
+EXIM_USER=18   # This changes if user exim exists
+EXIM_GROUP=544 # Administrators
+SPOOL_DIRECTORY=/var/spool/exim
+LOG_FILE_PATH=/var/log/exim/exim_%s.log
+TIMEZONE_DEFAULT = ""
+
+AUTH_CRAM_MD5=yes
+AUTH_PLAINTEXT=yes
+AUTH_SPA=yes
+
+SUPPORT_TLS=yes
+TLS_LIBS=-lssl -lcrypto
+
+ROUTER_ACCEPT=yes
+ROUTER_DNSLOOKUP=yes
+ROUTER_IPLITERAL=yes
+ROUTER_MANUALROUTE=yes
+ROUTER_QUERYPROGRAM=yes
+ROUTER_REDIRECT=yes
+
+TRANSPORT_APPENDFILE=yes
+TRANSPORT_AUTOREPLY=yes
+TRANSPORT_PIPE=yes
+TRANSPORT_SMTP=yes
+
+SUPPORT_MAILDIR=yes
+SUPPORT_MAILSTORE=yes
+SUPPORT_MBX=yes
+
+LOOKUP_DBM=yes
+LOOKUP_LSEARCH=yes
+
+# LOOKUP_CDB=yes
+LOOKUP_DNSDB=yes
+# LOOKUP_DSEARCH=yes
+# LOOKUP_LDAP=yes
+# LOOKUP_MYSQL=yes
+# LOOKUP_NIS=yes
+# LOOKUP_NISPLUS=yes
+# LOOKUP_ORACLE=yes
+LOOKUP_PASSWD=yes
+# LOOKUP_PGSQL=yes
+# LOOKUP_WHOSON=yes
+
+# It is important to define this variable but its value is always overridden
+CONFIGURE_OWNER=544
+
+EXICYCLOG_MAX=10
+
+COMPRESS_COMMAND=/usr/bin/gzip
+COMPRESS_SUFFIX=gz
+ZCAT_COMMAND=/usr/bin/zcat
+
+# EXIM_PERL=perl.o
+
+# Comment the two lines below if you do not have PAM, e.g. from
+# ftp://ftp.uni-erlangen.de/pub/pc/gnuwin32/cygwin/porters/Humblet_Pierre_A
+SUPPORT_PAM=yes
+CFLAGS += -DINCLUDE_PAM -I ../pam -I ../../pam
+
+APPENDFILE_MODE       = 0644     # default if no ntsec
+APPENDFILE_DIRECTORY_MODE = 0777
+APPENDFILE_LOCKFILE_MODE = 0666
+EXIMDB_DIRECTORY_MODE    = 0777
+EXIMDB_MODE              = 0666
+EXIMDB_LOCKFILE_MODE     = 0666
+INPUT_DIRECTORY_MODE  = 0777
+LOG_DIRECTORY_MODE    = 0777
+LOG_MODE              = 0666
+MSGLOG_DIRECTORY_MODE = 0777
+SPOOL_DIRECTORY_MODE  = 0777
+SPOOL_MODE            = 0666
+
+# PERL_CC=gcc -g -O2 -I ../minires
+# PERL_CCOPTS= -dD -save-temps -I ../minires
+# PERL_LIBS = /usr/lib/perl5/5.6.1/cygwin-multi/auto/DynaLoader/DynaLoader.a -L/usr/lib/perl5/5.6.1/cygwin-multi/CORE -llibperl5_6_1
+
+# End
diff --git a/src/OS/Makefile-DGUX b/src/OS/Makefile-DGUX
new file mode 100644
index 000000000..4f0439b93
--- /dev/null
+++ b/src/OS/Makefile-DGUX
@@ -0,0 +1,33 @@
+# $Cambridge: exim/src/OS/Makefile-DGUX,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for DGUX
+#
+# Written by Ken Bailey (K.Bailey@rbgkew.org.uk) Feb 1998
+# on dgux R4.11MU04 generic AViiON mc88100
+# with no X
+
+# Minor tidies to remove settings that are actually the default,
+# in line with the style of other system files - PH.
+
+BASENAME_COMMAND=/bin/basename
+CHOWN_COMMAND=/bin/chown
+CHGRP_COMMAND=/bin/chgrp
+
+# PERL
+# Perl is not necessary for running Exim itself, but some Perl utilities
+# are provided for processing the logs. Perl 5 is assumed.
+# DG ship perl version 4.036 in /bin/perl so need to use locally installed perl
+
+PERL_COMMAND=/usr/local/bin/perl
+
+# dg's version of gcc likes O2
+
+CFLAGS=-O2
+
+RANLIB=@true
+LIBS=-lsocket -lnsl
+LIBRESOLV=-lresolv
+DBMLIB=-ldbm
+
+# End
+
diff --git a/src/OS/Makefile-Darwin b/src/OS/Makefile-Darwin
new file mode 100644
index 000000000..6b8cdc8a6
--- /dev/null
+++ b/src/OS/Makefile-Darwin
@@ -0,0 +1,26 @@
+# $Cambridge: exim/src/OS/Makefile-Darwin,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for Darwin (Mac OS X).
+
+CC=cc
+
+BASENAME_COMMAND=look_for_it
+CHOWN_COMMAND=/usr/sbin/chown
+
+HAVE_SA_LEN=YES
+
+CFLAGS=-O -no-cpp-precomp -DBIND_8_COMPAT
+
+USE_DB = yes
+DBMLIB =
+
+X11=/usr/X11R6
+XINCLUDE=-I$(X11)/include
+XLFLAGS=-L$(X11)/lib
+X11_LD_LIB=$(X11)/lib
+
+EXIWHAT_PS_ARG=ax
+EXIWHAT_EGREP_ARG='/exim( |$$)'
+EXIWHAT_KILL_SIGNAL=-USR1
+
+# End
diff --git a/src/OS/Makefile-Default b/src/OS/Makefile-Default
new file mode 100644
index 000000000..5e0640568
--- /dev/null
+++ b/src/OS/Makefile-Default
@@ -0,0 +1,332 @@
+# $Cambridge: exim/src/OS/Makefile-Default,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+##################################################
+#          The Exim mail transport agent         #
+##################################################
+
+# Generic default make file containing settings that relate to the OS or
+# to selectable features within the OS. The configuration options for Exim
+# itself live in Local/Makefile, which is constructed by editing src/EDITME.
+
+# These settings are basic defaults which may be overridden, either by the
+# generic OS-specific files, or by site-specific files. Do not edit this file.
+# Instead, edit or create suitable OS-specific and/or site specific files.
+# See the manual for details.
+
+
+# MAKE_SHELL contains the name of the shell to be used for executing commands
+# from the make files. Normally /bin/sh should be used.
+
+MAKE_SHELL=/bin/sh
+
+
+# BASENAME_COMMAND contains the path to the "basename" command, which varies
+# from OS to OS. This is used when building the Exim monitor script only. (See
+# also HOSTNAME_COMMAND.) If BASENAME_COMMAND is set to "look_for_it" then the
+# script checks for /usr/bin/basename and /bin/basename, and if neither is
+# found, it uses /usr/ucb/basename. This copes with Solaris 2 and Linux, both
+# of which come in different versions.
+
+BASENAME_COMMAND=/usr/bin/basename
+
+
+# If you set STRIP_COMMAND to the path of the "strip" command, it will be run
+# on every binary that is built. It is left unset by default, which leaves
+# the binaries unstripped.
+
+# STRIP_COMMAND=/usr/bin/strip
+
+
+# Some of the following commands live in different places in different OS. We
+# include them all here for generality.
+
+CHOWN_COMMAND=/usr/bin/chown
+CHGRP_COMMAND=/usr/bin/chgrp
+MV_COMMAND=/bin/mv
+RM_COMMAND=/bin/rm
+
+
+# Some operating systems have different ways of building libraries of
+# functions. This macro defines the command to do this, defaulting to
+# the "ar" command with options "cq".
+
+AR=ar cq
+
+
+# Not all operating systems have the iconv() function. Those that do have
+#
+# HAVE_ICONV=yes
+#
+# in their OS-specific Makefiles. On those that don't it is possible to
+# install an independent implementation of iconv(). If you've done this,
+# add "HAVE_ICONV=yes" to your Local/Makefile.
+
+
+# Perl is not necessary for running Exim itself, except when EXIM_PERL
+# is set to cause Perl embedding. However, some Perl utilities are provided
+# for processing the logs. Perl 5 is assumed.
+
+PERL_COMMAND=/usr/bin/perl
+
+
+# CC contains the name of the C compiler to be used.
+
+CC=gcc
+
+
+# CFLAGS contains flags to be passed to the compiler. Nothing is defaulted
+# here; instead each OS-dependent Makefile contains a default setting.
+
+# CFLAGS=-O
+
+
+# LFLAGS contains flags to be passed to the link editor. Nothing is defaulted
+# here; instead each OS-dependent Makefile contains a default setting if one
+# is needed.
+
+# LFLAGS=
+
+
+# LIBS and EXTRALIBS contain library settings that are used on linking
+# commands to build binaries. The OS-dependent Makefile may contain a default
+# setting for LIBS, leaving EXTRALIBS available for adding further libraries
+# that are required for optional extras.
+
+# LIBS=
+# EXTRALIBS=
+
+
+# LIBS_EXIM and EXTRALIBS_EXIM contain library settings that are used
+# only when linking the Exim binary. They are not used for other binaries.
+# One possible use is for the TCP wrappers library.
+
+# LIBS_EXIM=
+# EXTRALIBS_EXIM=
+
+
+# LIBS_EXIMON and EXTRALIBS_EXIMON contain library settings that are
+# used only when linking the Exim monitor binary. They are not used for
+# other binaries.
+
+# LIBS_EXIMON=
+# EXTRALIBS_EXIMON=
+
+
+# PCRE_CFLAGS contains flags to be passed to the CFLAGS parameter of the
+# makefile for building the PCRE regular expression library, in addition
+# to CFLAGS. Typical use is to set -DUSE_BCOPY on legacy systems that lack
+# the memmove() function but do have bcopy().
+
+# PCRE_CFLAGS=
+
+
+# The error name for quota exceeded varies among operating systems, and
+# even, unfortunately, in different versions of the same operating system.
+# EDQUOT was not in Sys V, but is in SPEC 1170, apparently. It was used
+# in SunOS4, but got taken out for SunOS5, where ENOSPC was given if a quota
+# was exceeded. However, it got put back into SunOS5 with a patch to 5.4 in
+# order to comply with SPEC 1170. Thus even different patch levels of the same
+# system (SunOS5) may use different numbers.
+#
+# If you don't have quotas or are not interested in handling quota errors
+# specially, just set this variable to 0. If it is not set, it defaults to
+# EDQUOT if that is defined for the OS; otherwise it defaults to ENOSPC.
+
+# ERRNO_QUOTA=EDQUOT
+
+
+# The exiwhat utility script finds all the processes running Exim, and sends
+# them a SIGUSR1 signal to get them to write their status to a file. There are
+# two ways in which this can be done:
+#
+# (1) If the OS has a command to find processes and signal them, that can be
+# used. Linux has "killall"; Solaris has "pkill". (Note: "killall" on Solaris
+# does something very different - and disastrous.) The following are set in the
+# OS-specific Makefiles for those OS where this can be done:
+
+# EXIWHAT_MULTIKILL_CMD=
+# EXIWHAT_MULTIKILL_ARG=
+
+# (2) For other operating systems, exiwhat calls the ps command and egreps the
+# output in order to find all the processes running Exim. The arguments for the
+# various commands needed to do this vary from OS to OS. These defaults work on
+# Solaris 2, HPUX, and IRIX. The OS-specific Makefiles have different versions
+# for other systems, and you can override with your own requirements in your
+# private Makefiles in the Local directory. The most commonly found
+# alternatives are -ax instead of -e for the ps argument, and / instead of a
+# blank before the name exim for the egrep argument on systems whose ps output
+# shows the full path name. The quotes for the egrep argument are specified
+# here so that leading white space can be used. This value should always be
+# given in single quotes.
+
+EXIWHAT_PS_CMD=/bin/ps
+EXIWHAT_PS_ARG=-e
+EXIWHAT_EGREP_ARG=' exim( |$$|-)'
+
+# For both kinds of exiwhat usage, the next setting specifies the signal that
+# is sent.
+
+EXIWHAT_KILL_SIGNAL=-USR1
+
+
+# IPv6 is coming. Exim has experimental support that has been tried out on
+# one or two OS. See the file README.IPV6 for the current status of this
+# support. Do not set this option unless you are working on IPv6 and know
+# what you are doing. As well as the basic enabling option, there are
+# parameters for include and library directories that may be needed for IPv6
+# on some systems.
+
+# HAVE_IPV6=YES
+# IPV6_INCLUDE=-I /usr/ipv6/include
+# IPV6_LIBS=-L/usr/ipv6/libs -linet6
+
+# Setting this brings in support for A6 DNS records for IPV6. These are
+# now expected to be reduced to "experimental" status by the IETF, so
+# the code is omitted by default.
+
+# SUPPORT_A6=yes
+
+# Exim uses the function getaddrinfo() for converting IPv6 addresses in text
+# form to binary. Apparently some operating systems do not support this, or not
+# correctly, and require the use of the function inet_pton() instead. The
+# following setting enables this. Note, however, the inet_pton() has reduced
+# functionality compared with getaddrinfo(). In particular, it does not
+# recognize the percent convention for identifying scopes (interfaces) that is
+# used by some operating systems.
+
+# IPV6_USE_INET_PTON=yes
+
+
+# HOSTNAME_COMMAND contains the path to the "hostname" command, which varies
+# from OS to OS. This is used when building the Exim monitor script only. (See
+# also BASENAME_COMMAND.) If HOSTNAME_COMMAND is set to "look_for_it" then the
+# script checks for /usr/bin/hostname and /bin/hostname, and if neither is
+# found, it uses /usr/ucb/basename. This copes with Solaris 2, which comes in
+# different versions.
+
+HOSTNAME_COMMAND=/bin/hostname
+
+
+# INCLUDE contains arbitrary include parameters that you may need to use
+# when building exim. It is added to every compile command.
+
+# INCLUDE=-I /some/special/include-directory
+
+
+# Some OS require a separate library to be quoted when linking programs that
+# call name resolver functions. This can be set in LIBRESOLV, which is left
+# unset here, but is set is some of the OS-specific Makefiles.
+
+# LIBRESOLV=
+
+
+# Additional libraries and include directories may be required for some
+# lookup styles, e.g. LDAP or SQL. LOOKUP_LIBS is included only on the
+# command for linking Exim itself, not on any auxiliary programs. You
+# don't need to set LOOKUP_INCLUDE if the relevant directories are already
+# specified in INCLUDE.
+
+# LOOKUP_INCLUDE=-I /usr/local/ldap/include -I /usr/local/sql/include
+# LOOKUP_LIBS=-L/usr/local/lib -lldap -llber
+
+
+# RANLIB should be set to something that does nothing on systems that do not
+# have the ranlib command or do not need to run it on library files.
+
+RANLIB=ranlib
+
+
+# EXIM_CHMOD is available to specify a command that is automatically applied
+# to the Exim binary immediately it is compiled. (I find this useful when
+# building test versions.)
+
+EXIM_CHMOD=@true
+
+
+# LOCAL_SCAN_SOURCE defines the file in which the function local_scan() is
+# defined. This provides the administrator with a hook for including C code
+# for scanning incoming mails. The path that is defined must be relative to
+# the Exim distribution directory. For example
+
+# LOCAL_SCAN_SOURCE=Local/local_scan.c
+
+# The default setting points to a template function that doesn't actually do
+# any scanning, but just accepts the message.
+
+LOCAL_SCAN_SOURCE=src/local_scan.c
+
+# If you want to specify options for your local_scan() that can be set from
+# the main Exim configuration file, you need to uncomment the following line,
+# and then provide a table of options in your local_scan() source, as described
+# in the reference manual.
+
+# LOCAL_SCAN_HAS_OPTIONS=yes
+
+
+#############################################################################
+# The following are all concerned with configuring the way Exim handles its
+# database (hints) and other dbm files.
+
+# Some systems require a separate library to be supplied when linking programs
+# that make use of DBM library calls. This can be set in DBMLIB, which is unset
+# by default, but is set in some of the OS-specific Makefiles. Setting it in
+# your Local/Makefile will override any other setting.
+
+# DBMLIB=
+
+
+# When Exim is attempting to lock one of its database (hints) files, it
+# applies a timeout which can be altered here.
+
+# EXIMDB_LOCK_TIMEOUT=60
+
+
+# By default, Exim uses traditional ndbm function calls to handle its indexed
+# hints databases. On systems that have Berkeley db installed, this still
+# works via the compatibility interface. However, by defining USE_DB you can
+# make it use native db function calls.
+
+# USE_DB=YES
+
+# Similarly, if you are using gdbm, Exim will by default use the ndbm
+# compatibility interface. However, by defining USE_GDBM you can make it
+# use the native gdbm function calls.
+
+# USE_GDBM=YES
+
+
+#############################################################################
+# The following definitions are relevant only when compiling the Exim monitor
+# program, which requires an X11 display. See the varible EXIM_MONITOR in
+# src/EDITME for how to suppress this compilation.
+
+# X11 contains the location of the X11 libraries and include files.
+
+X11=/usr/X11R6
+
+# XINCLUDE contains options for header inclusion when compiling functions
+# that call X11 functions.
+
+XINCLUDE=-I$(X11)/include
+
+# XLFLAGS contains flags to be passed to the linker when linking the monitor.
+
+XLFLAGS=-L$(X11)/lib
+
+# X11_LD_LIB contains the name of the X11 library that is to be added to
+# LD_LIBRARY_PATH when running the monitor program.
+
+X11_LD_LIB=$(X11)/lib
+
+# A modified version of the Athena TextPop module is supplied with Exim. The
+# modification is to remove the "replace" part of the "search and replace"
+# operation because it isn't wanted. TextPop is only one of a number of
+# modules that make up the Text widget. Some antique link editors cannot handle
+# the case of a replacement module for one of a set of modules. To allow
+# the monitor to be linked in such cases, set the value of EXIMON_TEXTPOP
+# to be empty. The search operations will then contain a useless "replace"
+# option, which is untidy, but does no harm.
+
+EXIMON_TEXTPOP=em_TextPop.o
+
+# End
diff --git a/src/OS/Makefile-FreeBSD b/src/OS/Makefile-FreeBSD
new file mode 100644
index 000000000..179cbacb4
--- /dev/null
+++ b/src/OS/Makefile-FreeBSD
@@ -0,0 +1,36 @@
+# $Cambridge: exim/src/OS/Makefile-FreeBSD,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for FreeBSD
+# There's no setting of CFLAGS here, to allow the system default
+# for "make" to be the default.
+
+PORTOBJFORMAT!= test -x /usr/bin/objformat && /usr/bin/objformat || echo aout
+
+CHOWN_COMMAND=/usr/sbin/chown
+
+HAVE_SA_LEN=YES
+
+# crypt() is in a separate library
+LIBS=-lcrypt
+
+# FreeBSD always ships with Berkeley DB
+USE_DB=yes
+
+# This setting changed on Sheldon Hearn's recommendation
+# X11=/usr/X11R6
+X11=$(X11BASE)
+
+XINCLUDE=-I$(X11)/include
+XLFLAGS=-L$(X11)/lib
+.if ${PORTOBJFORMAT} == "elf"
+XLFLAGS+=-Wl,-rpath,${X11BASE}/lib
+.endif
+X11_LD_LIB=$(X11)/lib
+
+EXIWHAT_PS_ARG=-ax
+EXIWHAT_EGREP_ARG='/exim( |$$)'
+EXIWHAT_MULTIKILL_CMD='killall -m'
+EXIWHAT_MULTIKILL_ARG='^exim($$|-[0-9.]+-[0-9]+$$)'
+EXIWHAT_KILL_SIGNAL=-USR1
+
+# End
diff --git a/src/OS/Makefile-GNU b/src/OS/Makefile-GNU
new file mode 100644
index 000000000..d52fb22c9
--- /dev/null
+++ b/src/OS/Makefile-GNU
@@ -0,0 +1,24 @@
+# $Cambridge: exim/src/OS/Makefile-GNU,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for GNU/Hurd.
+
+BASENAME_COMMAND=look_for_it
+
+DBMLIB = -ldb
+USE_DB = yes
+
+LIBS = -lnsl -lcrypt
+LIBRESOLV = -lresolv
+
+CFLAGS = -O2 -g -Wall
+
+X11=/usr/X11R6
+XINCLUDE=-I$(X11)/include
+XLFLAGS=-L$(X11)/lib
+X11_LD_LIB=$(X11)/lib
+
+EXIWHAT_PS_ARG=ax
+EXIWHAT_EGREP_ARG='/exim( |$$)'
+EXIWHAT_KILL_SIGNAL=-USR1
+
+# End
diff --git a/src/OS/Makefile-HI-OSF b/src/OS/Makefile-HI-OSF
new file mode 100644
index 000000000..c49d12547
--- /dev/null
+++ b/src/OS/Makefile-HI-OSF
@@ -0,0 +1,10 @@
+# $Cambridge: exim/src/OS/Makefile-HI-OSF,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for HI-OSF/1-MJ and HI-UX/MPP
+
+CC=cc
+CFLAGS=-O
+RANLIB=@true
+EXIWHAT_EGREP_ARG='/exim( |$$)'
+
+# End
diff --git a/src/OS/Makefile-HI-UX b/src/OS/Makefile-HI-UX
new file mode 100644
index 000000000..f8c968aa4
--- /dev/null
+++ b/src/OS/Makefile-HI-UX
@@ -0,0 +1,14 @@
+# $Cambridge: exim/src/OS/Makefile-HI-UX,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for HI-UX
+
+CC=cc -Aa -D_HIUX_SOURCE
+HAVE_SETRESUID=YES
+HAVE_SETEUID=NO
+XINCLUDE=-I/usr/include/X11R5
+XLFLAGS=-L/usr/lib/X11R5
+DBMLIB = -lndbm
+NEED_H_ERRNO=1
+RANLIB=@true
+
+# End
diff --git a/src/OS/Makefile-HP-UX b/src/OS/Makefile-HP-UX
new file mode 100644
index 000000000..a5d5374c3
--- /dev/null
+++ b/src/OS/Makefile-HP-UX
@@ -0,0 +1,17 @@
+# $Cambridge: exim/src/OS/Makefile-HP-UX,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for HP-UX later than 9
+
+CFLAGS=-O
+BASENAME_COMMAND=/bin/basename
+HAVE_ICONV=yes
+HAVE_SETRESUID=YES
+HAVE_SETEUID=NO
+XINCLUDE=-I/usr/include/X11R6 -I/usr/contrib/X11R6/include
+XLFLAGS=-L/usr/lib/X11R6 -L/usr/contrib/X11R6/lib
+X11_LD_LIB=/usr/contrib/X11R6/lib
+EXIMON_TEXTPOP=
+DBMLIB=-lndbm
+RANLIB=@true
+
+# End
diff --git a/src/OS/Makefile-HP-UX-9 b/src/OS/Makefile-HP-UX-9
new file mode 100644
index 000000000..f96a0bc24
--- /dev/null
+++ b/src/OS/Makefile-HP-UX-9
@@ -0,0 +1,17 @@
+# $Cambridge: exim/src/OS/Makefile-HP-UX-9,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for HP-UX 9
+
+CFLAGS=-O
+BASENAME_COMMAND=/bin/basename
+HAVE_ICONV=yes
+HAVE_SETRESUID=YES
+HAVE_SETEUID=NO
+XINCLUDE=-I/usr/include/X11R5
+XLFLAGS=-L/usr/lib/X11R5 -L/usr/contrib/X11R5/lib
+X11_LD_LIB=/usr/contrib/X11R5/lib
+EXIMON_TEXTPOP=
+DBMLIB=-lndbm
+RANLIB=@true
+
+# End
diff --git a/src/OS/Makefile-IRIX b/src/OS/Makefile-IRIX
new file mode 100644
index 000000000..bab1e9910
--- /dev/null
+++ b/src/OS/Makefile-IRIX
@@ -0,0 +1,14 @@
+# $Cambridge: exim/src/OS/Makefile-IRIX,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for IRIX
+
+HAVE_ICONV=yes
+BASENAME_COMMAND=/sbin/basename
+HOSTNAME_COMMAND=/usr/bsd/hostname
+CFLAGS=-OPT:Olimit=1500
+LIBS=-lmld
+XINCLUDE=-I/usr/include/X11
+vfork=fork
+RANLIB=@true
+
+# End
diff --git a/src/OS/Makefile-IRIX6 b/src/OS/Makefile-IRIX6
new file mode 100644
index 000000000..3534e5d66
--- /dev/null
+++ b/src/OS/Makefile-IRIX6
@@ -0,0 +1,15 @@
+# $Cambridge: exim/src/OS/Makefile-IRIX6,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for IRIX6 on 64-bit systems
+
+HAVE_ICONV=yes
+HOSTNAME_COMMAND=/usr/bsd/hostname
+CFLAGS=-O2 -n32 -OPT:Olimit=4000
+LFLAGS=-n32
+LIBS=-lelf
+XINCLUDE=-I/usr/include/X11
+XLFLAGS=
+vfork=fork
+RANLIB=@true
+
+# End
diff --git a/src/OS/Makefile-IRIX632 b/src/OS/Makefile-IRIX632
new file mode 100644
index 000000000..5b09364df
--- /dev/null
+++ b/src/OS/Makefile-IRIX632
@@ -0,0 +1,18 @@
+# $Cambridge: exim/src/OS/Makefile-IRIX632,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for IRIX 6 on 32-bit systems.
+# There seems to be some variation. The commented settings show
+# some alternatives.
+
+HAVE_ICONV=yes
+HOSTNAME_COMMAND=/usr/bsd/hostname
+#CFLAGS=-OPT:Olimit=1500 -32 -mips2
+CFLAGS=-32
+LFLAGS=-32
+#LIBS=-lmld
+LIBS=-lelf
+XINCLUDE=-I/usr/include/X11
+vfork=fork
+RANLIB=@true
+
+# End
diff --git a/src/OS/Makefile-IRIX65 b/src/OS/Makefile-IRIX65
new file mode 100644
index 000000000..b678e37ae
--- /dev/null
+++ b/src/OS/Makefile-IRIX65
@@ -0,0 +1,18 @@
+# $Cambridge: exim/src/OS/Makefile-IRIX65,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for IRIX 6.5
+
+HAVE_ICONV=yes
+HOSTNAME_COMMAND=/usr/bsd/hostname
+CC=cc
+CFLAGS=-O2 -OPT:Olimit=0
+# CFLAGS=-O2 # override with this (in your Local/Makefile) if using gcc
+LFLAGS=-Wl,-LD_MSG:off=85
+LFLAGS=
+# nlist has moved from libmld to libelf
+LIBS=-lelf
+XINCLUDE=-I/usr/include/X11
+vfork=fork
+RANLIB=@true
+
+# End
diff --git a/src/OS/Makefile-Linux b/src/OS/Makefile-Linux
new file mode 100644
index 000000000..d933c056a
--- /dev/null
+++ b/src/OS/Makefile-Linux
@@ -0,0 +1,31 @@
+# $Cambridge: exim/src/OS/Makefile-Linux,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for Linux. This is for modern Linuxes,
+# which use libc6.
+
+HAVE_ICONV=yes
+
+BASENAME_COMMAND=look_for_it
+CHOWN_COMMAND=look_for_it
+CHGRP_COMMAND=look_for_it
+
+CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
+
+DBMLIB = -ldb
+USE_DB = yes
+
+LIBS = -lnsl -lcrypt
+LIBRESOLV = -lresolv
+
+X11=/usr/X11R6
+XINCLUDE=-I$(X11)/include
+XLFLAGS=-L$(X11)/lib
+X11_LD_LIB=$(X11)/lib
+
+EXIWHAT_PS_ARG=ax
+EXIWHAT_EGREP_ARG='/exim( |$$)'
+EXIWHAT_MULTIKILL_CMD=killall
+EXIWHAT_MULTIKILL_ARG=exim
+EXIWHAT_KILL_SIGNAL=-USR1
+
+# End
diff --git a/src/OS/Makefile-Linux-libc5 b/src/OS/Makefile-Linux-libc5
new file mode 100644
index 000000000..7ae2152e8
--- /dev/null
+++ b/src/OS/Makefile-Linux-libc5
@@ -0,0 +1,23 @@
+# $Cambridge: exim/src/OS/Makefile-Linux-libc5,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for Linux systems using the old libc5
+# version of the C library.
+
+BASENAME_COMMAND=look_for_it
+CHOWN_COMMAND=look_for_it
+CHGRP_COMMAND=look_for_it
+
+CFLAGS=-O
+
+DBMLIB = -lndbm
+
+X11=/usr/X11R6
+XINCLUDE=-I$(X11)/include
+XLFLAGS=-L$(X11)/lib
+X11_LD_LIB=$(X11)/lib
+
+EXIWHAT_PS_ARG=-ax
+EXIWHAT_EGREP_ARG='/exim( |$$)'
+EXIWHAT_KILL_SIGNAL=-USR1
+
+# End
diff --git a/src/OS/Makefile-NetBSD b/src/OS/Makefile-NetBSD
new file mode 100644
index 000000000..0f00789cb
--- /dev/null
+++ b/src/OS/Makefile-NetBSD
@@ -0,0 +1,27 @@
+# $Cambridge: exim/src/OS/Makefile-NetBSD,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for NetBSD (ELF object format)
+
+CHOWN_COMMAND=/usr/sbin/chown
+CFLAGS=-O
+
+HAVE_SA_LEN=YES
+HAVE_IPV6=YES
+LIBS=-lcrypt
+
+X11=/usr/X11R6
+XINCLUDE=-I$(X11)/include
+XLFLAGS=-L$(X11)/lib
+X11_LD_LIB=$(X11)/lib
+
+EXIWHAT_PS_ARG=-ax
+EXIWHAT_EGREP_ARG='/exim( |$$)'
+EXIWHAT_KILL_SIGNAL=-USR1
+
+# NetBSD always ships with Berkeley DB
+USE_DB=yes
+
+# NetBSD ELF linker needs a -R flag.
+XLFLAGS+=-Wl,-R$(X11)/lib/
+
+# End
diff --git a/src/OS/Makefile-NetBSD-a.out b/src/OS/Makefile-NetBSD-a.out
new file mode 100644
index 000000000..1ef7a86c8
--- /dev/null
+++ b/src/OS/Makefile-NetBSD-a.out
@@ -0,0 +1,24 @@
+# $Cambridge: exim/src/OS/Makefile-NetBSD-a.out,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for NetBSD (a.out/COFF object format)
+
+CHOWN_COMMAND=/usr/sbin/chown
+CFLAGS=-O
+
+HAVE_SA_LEN=YES
+HAVE_IPV6=YES
+LIBS=-lcrypt
+
+X11=/usr/X11R6
+XINCLUDE=-I$(X11)/include
+XLFLAGS=-L$(X11)/lib
+X11_LD_LIB=$(X11)/lib
+
+EXIWHAT_PS_ARG=-ax
+EXIWHAT_EGREP_ARG='/exim( |$$)'
+EXIWHAT_KILL_SIGNAL=-USR1
+
+# NetBSD always ships with Berkeley DB
+USE_DB=yes
+
+# End
diff --git a/src/OS/Makefile-OSF1 b/src/OS/Makefile-OSF1
new file mode 100644
index 000000000..b5a61fb19
--- /dev/null
+++ b/src/OS/Makefile-OSF1
@@ -0,0 +1,12 @@
+# $Cambridge: exim/src/OS/Makefile-OSF1,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for OSF1
+
+CFLAGS=-O
+LIBS=-liconv
+HAVE_CRYPT16=yes
+HAVE_ICONV=yes
+HOSTNAME_COMMAND=/usr/bin/hostname
+EXIWHAT_EGREP_ARG='/exim( |$$)'
+
+# End
diff --git a/src/OS/Makefile-OpenBSD b/src/OS/Makefile-OpenBSD
new file mode 100644
index 000000000..05d0b3d44
--- /dev/null
+++ b/src/OS/Makefile-OpenBSD
@@ -0,0 +1,26 @@
+# $Cambridge: exim/src/OS/Makefile-OpenBSD,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for OpenBSD
+
+CHOWN_COMMAND=/usr/sbin/chown
+CHGRP_COMMAND=/usr/sbin/chgrp
+CFLAGS=-O2 -Wall
+
+HAVE_SA_LEN=YES
+
+X11=/usr/X11R6
+XINCLUDE=-I$(X11)/include
+XLFLAGS=-L$(X11)/lib
+
+EXIWHAT_MULTIKILL_CMD=pkill
+EXIWHAT_MULTIKILL_ARG='exim( |$$|-)'
+EXIWHAT_PS_ARG=-ax
+EXIWHAT_EGREP_ARG='/exim( |$$)'
+EXIWHAT_KILL_SIGNAL=-USR1
+
+HAVE_IPV6=YES
+
+# OpenBSD always ships with Berkeley DB
+USE_DB=yes
+
+# End
diff --git a/src/OS/Makefile-OpenUNIX b/src/OS/Makefile-OpenUNIX
new file mode 100644
index 000000000..2d543b64f
--- /dev/null
+++ b/src/OS/Makefile-OpenUNIX
@@ -0,0 +1,19 @@
+# $Cambridge: exim/src/OS/Makefile-OpenUNIX,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for OpenUNIX
+
+CC=/usr/bin/cc
+CFLAGS=-O -I/usr/local/include
+LFLAGS=-L/usr/local/lib
+
+LIBS=-lsocket -lnsl -lelf -lgen -lresolv
+EXTRALIBS_EXIMON=-lICE -lSM
+
+RANLIB=@true
+ERRNO_QUOTA=0
+
+X11=/usr/lib/X11
+XINCLUDE=-I/usr/include/X11
+XLFLAGS=-L/usr/lib -L$(X11)/lib
+
+# End
diff --git a/src/OS/Makefile-QNX b/src/OS/Makefile-QNX
new file mode 100644
index 000000000..d0f74608d
--- /dev/null
+++ b/src/OS/Makefile-QNX
@@ -0,0 +1,31 @@
+# $Cambridge: exim/src/OS/Makefile-QNX,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific makefile for QNX
+
+BASENAME_COMMAND=/bin/basename
+MAKE_SHELL=/usr/bin/bash
+
+CHOWN_COMMAND=/bin/chown
+CHGRP_COMMAND=/bin/chgrp
+HOSTNAME_COMMAND=/bin/hostname
+MV_COMMAND=/bin/mv
+PERL_COMMAND=/usr/bin/perl
+RM_COMMAND=/bin/rm
+
+AR=ar -rc
+
+CC=cc
+CFLAGS=-Otax
+LIBIDENTCFLAGS=
+
+RANLIB=@true
+DBMLIB=-ldb
+USE_DB=yes
+LIBS=-lsocket
+
+X11=/usr/X11R6
+XINCLUDE=-I$(X11)/include
+XLFLAGS=-L$(X11)/lib
+X11_LD_LIB=$(X11)/lib
+
+# End
diff --git a/src/OS/Makefile-SCO b/src/OS/Makefile-SCO
new file mode 100644
index 000000000..4366f387b
--- /dev/null
+++ b/src/OS/Makefile-SCO
@@ -0,0 +1,29 @@
+# $Cambridge: exim/src/OS/Makefile-SCO,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for SCO
+
+# It was reported that some versions of gcc (e.g. 2.8.1) require this to be
+# CFLAGS=-melf
+
+CFLAGS=-b elf
+
+RANLIB=@true
+DBMLIB=-lndbm
+ERRNO_QUOTA=0
+LIBS=-lsocket
+HAVE_ICONV=yes
+
+X11=/usr/lib/X11
+XINCLUDE=-I/usr/include/X11
+XLFLAGS=-L/usr/lib -L$(X11)/lib
+X11_LD_LIB=$(X11)/lib
+
+# Changes from Frank Bernhardt (30/09/04)
+
+BASENAME_COMMAND=/bin/basename
+CHOWN_COMMAND=/bin/chown
+CHGRP_COMMAND=/bin/chgrp
+HOSTNAME_COMMAND=/usr/bin/hostname
+
+
+# End
diff --git a/src/OS/Makefile-SCO_SV b/src/OS/Makefile-SCO_SV
new file mode 100644
index 000000000..48b5f2278
--- /dev/null
+++ b/src/OS/Makefile-SCO_SV
@@ -0,0 +1,34 @@
+# $Cambridge: exim/src/OS/Makefile-SCO_SV,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for SCO_SV release 5 (tested on 5.0.5 & 5.0.5)
+#       (see the UNIX_SV files for SCO 4.2)
+# Supplied by: Tony Earnshaw <tonye@ilion.nl>
+
+# Note that 'gcc -melf -m486' applies to gcc 2.7.2 and higher;
+# 2.7.1 and SCO's SDK need '-belf'.
+
+# Removed -lwrap (PH 27/7/00) because not all systems have it
+
+CFLAGS=-melf -O3 -m486
+LFLAGS=-L/lib -L/usr/lib -L/usr/local/lib
+LIBS=-ltinfo -lm -lsocket
+
+HAVE_ICONV=yes
+
+RANLIB=@true
+DBMLIB=-lndbm
+ERRNO_QUOTA=0
+
+X11=/usr/lib/X11
+XINCLUDE=-I/usr/include/X11
+XLFLAGS=-L/usr/lib -L$(X11)/lib
+X11_LD_LIB=$(X11)/lib
+
+# Changes from Frank Bernhardt (30/9/04)
+
+BASENAME_COMMAND=/bin/basename
+CHOWN_COMMAND=/bin/chown
+CHGRP_COMMAND=/bin/chgrp
+HOSTNAME_COMMAND=/usr/bin/hostname
+
+# End
diff --git a/src/OS/Makefile-SunOS4 b/src/OS/Makefile-SunOS4
new file mode 100644
index 000000000..fd08dd23e
--- /dev/null
+++ b/src/OS/Makefile-SunOS4
@@ -0,0 +1,23 @@
+# $Cambridge: exim/src/OS/Makefile-SunOS4,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for SunOS4
+
+CFLAGS=-O
+
+# Don't need -DSTRERROR_FROM_ERRLIST in PCRE_CFLAGS, because it is in os.h
+# for SunOS4, which gets included for pcre.
+
+PCRE_CFLAGS=-DUSE_BCOPY
+
+CHOWN_COMMAND=/usr/etc/chown
+HOSTNAME_COMMAND=/usr/bin/hostname
+EXIT_FAILURE=1
+EXIT_SUCCESS=0
+LIBRESOLV=-lresolv
+XINCLUDE=-I/usr/include/X11
+
+EXIWHAT_PS_ARG=-ax
+EXIWHAT_EGREP_ARG='/exim( |$$)'
+EXIWHAT_KILL_SIGNAL=-30
+
+# End
diff --git a/src/OS/Makefile-SunOS5 b/src/OS/Makefile-SunOS5
new file mode 100644
index 000000000..1afef4d23
--- /dev/null
+++ b/src/OS/Makefile-SunOS5
@@ -0,0 +1,24 @@
+# $Cambridge: exim/src/OS/Makefile-SunOS5,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for SunOS5
+
+CFLAGS=-O
+
+HAVE_ICONV=yes
+
+BASENAME_COMMAND=look_for_it
+HOSTNAME_COMMAND=look_for_it
+
+RANLIB=@true
+LIBS=-lsocket -lnsl -lkstat
+LIBRESOLV=-lresolv
+
+EXIWHAT_MULTIKILL_CMD=pkill
+EXIWHAT_MULTIKILL_ARG='exim( |$$|-)'
+
+X11=/usr/openwin
+XINCLUDE=-I$(X11)/include
+XLFLAGS=-L$(X11)/lib -R$(X11)/lib
+X11LIB=$(X11)/lib
+
+# End
diff --git a/src/OS/Makefile-SunOS5-hal b/src/OS/Makefile-SunOS5-hal
new file mode 100644
index 000000000..014bac1e1
--- /dev/null
+++ b/src/OS/Makefile-SunOS5-hal
@@ -0,0 +1,20 @@
+# $Cambridge: exim/src/OS/Makefile-SunOS5-hal,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for SunOS5 on a HAL
+
+# Note: The HAL runs a standard SunOS5 except that it has a 64 bit C
+# compiler called hcc.  To make things work pass the -KV7 flag to force
+# 32bit compilation - this is necessary to interwork with some libraries.
+
+CC=hcc
+CFLAGS=-O -KV7
+LIBIDENTCFLAGS="-KV7 -O -DHAVE_ANSIHEADERS"
+LIBIDENTNAME=sunos5
+RANLIB=@true
+LIBS=-lsocket -lnsl -lkstat
+LIBRESOLV=-lresolv
+X11=/usr/X11R6
+XINCLUDE=-I$(X11)/include
+XLFLAGS=-L$(X11)/lib -R$(X11)/lib
+
+# End
diff --git a/src/OS/Makefile-ULTRIX b/src/OS/Makefile-ULTRIX
new file mode 100644
index 000000000..d9cd30262
--- /dev/null
+++ b/src/OS/Makefile-ULTRIX
@@ -0,0 +1,20 @@
+# $Cambridge: exim/src/OS/Makefile-ULTRIX,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for Ultrix
+
+MAKE_SHELL=/usr/bin/sh5
+
+CFLAGS=-O
+
+# This can either be /usr/include/X11 or /usr/include/mit depending on
+# the particular version of ULTRIX.
+
+XINCLUDE=-I/usr/include/X11 -I/usr/include/mit
+
+DBMLIB=-lgdbm
+
+EXIWHAT_PS_ARG=-ax
+EXIWHAT_EGREP_ARG='/exim( |$$)'
+EXIWHAT_KILL_SIGNAL=-USR1
+
+# End
diff --git a/src/OS/Makefile-UNIX_SV b/src/OS/Makefile-UNIX_SV
new file mode 100644
index 000000000..1f56c59fa
--- /dev/null
+++ b/src/OS/Makefile-UNIX_SV
@@ -0,0 +1,26 @@
+# $Cambridge: exim/src/OS/Makefile-UNIX_SV,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for SCO SVR4.2MP (and maybe Unixware)
+#
+#  *** Note that for SCO 5 the configuration file is called SCO_SV,
+#  *** and that Unixware7 has its own configuration. This is an old
+#  *** file that is retained for compatibility.
+#
+# Note that SCO does not include dbm/ndbm with their standard compiler
+# (it is available with /usr/ucb/cc, but that has bugs of its own). You
+# should install gcc and gdbm, then execute 'make install-compat' in the
+# gdbm source directory.
+
+CC=gcc -I/usr/local/include
+CFLAGS=-O
+
+RANLIB=@true
+DBMLIB=-lgdbm -L/usr/local/lib
+ERRNO_QUOTA=0
+LIBS=-lsocket -lelf -lgen -lnsl -lresolv
+
+X11=/usr/lib/X11
+XINCLUDE=-I/usr/include/X11
+XLFLAGS=-L/usr/lib -L$(X11)/lib
+
+# End
diff --git a/src/OS/Makefile-USG b/src/OS/Makefile-USG
new file mode 100644
index 000000000..b49feecc9
--- /dev/null
+++ b/src/OS/Makefile-USG
@@ -0,0 +1,35 @@
+# $Cambridge: exim/src/OS/Makefile-USG,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for Unixware 2.x
+#
+# Note that Unixware does not include db/dbm/ndbm with their standard compiler
+# (it is available with /usr/ucb/cc, but that has bugs of its own). You
+# should install gcc and Berkeley DB (or another dbm library if you really
+# insist). If you use a different dbm library you will need to override
+# DBMLIB below.
+#
+# DB 1.85 and 2.x can be found at http://www.sleepycat.com/.
+# They have different characteristics. See the discussion of dbm libraries
+# in doc/dbm.discuss.txt in the Exim distribution.
+#
+# DB needs to be compiled with gcc and you need a 'cc' in your path
+# before the Unixware CC to compile it.
+#
+# Don't bother even starting to install exim on Unixware unless
+# you have installed gcc and use it for everything.
+
+CC=gcc -I/usr/local/include
+CFLAGS=-O
+
+RANLIB=@true
+DBMLIB=-ldb -L/usr/local/lib
+USE_DB=YES
+ERRNO_QUOTA=0
+LIBS=-lsocket -lelf -lgen -lnsl -lresolv
+
+X11=/usr/lib/X11
+XINCLUDE=-I/usr/include/X11
+XLFLAGS=-L/usr/lib -L$(X11)/lib
+X11_LD_LIB=$(X11)/lib
+
+# End
diff --git a/src/OS/Makefile-Unixware7 b/src/OS/Makefile-Unixware7
new file mode 100644
index 000000000..5c228cc7f
--- /dev/null
+++ b/src/OS/Makefile-Unixware7
@@ -0,0 +1,34 @@
+# $Cambridge: exim/src/OS/Makefile-Unixware7,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for Unixware7
+# Based on information from James FitzGibbon <james@ehlo.com>
+
+# If you want to use libbind, you need to
+#     add -I/usr/local/bind/include to CFLAGS
+#     add -L/usr/local/bind/lib to LFLAGS
+#     remove -lresolv from LIBS
+#     add LOOKUP_LIBS=-lbind
+# The new settings should go in your Local/Makefile rather than here; then
+# they will be usable for subsequent Exim releases.
+
+CC=/usr/bin/cc
+CFLAGS=-O -I/usr/local/include
+LFLAGS=-L/usr/local/lib
+
+HAVE_ICONV=yes
+
+LIBS=-lsocket -lnsl -lelf -lgen -lresolv
+
+# Removed on the advice of Larry Rosenman
+# EXTRALIBS=-lwrap
+
+EXTRALIBS_EXIMON=-lICE -lSM
+
+RANLIB=@true
+ERRNO_QUOTA=0
+
+X11=/usr/lib/X11
+XINCLUDE=-I/usr/include/X11
+XLFLAGS=-L/usr/lib -L$(X11)/lib
+
+# End
diff --git a/src/OS/Makefile-mips b/src/OS/Makefile-mips
new file mode 100644
index 000000000..9df94e2d7
--- /dev/null
+++ b/src/OS/Makefile-mips
@@ -0,0 +1,19 @@
+# $Cambridge: exim/src/OS/Makefile-mips,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: OS-specific make file for RiscOS4bsd
+
+HOSTNAME_COMMAND=/usr/ucb/hostname
+EXIT_FAILURE=1
+EXIT_SUCCESS=0
+LIBRESOLV=-lresolv
+LIBS=-liberty
+XINCLUDE=-I/usr/X11R6/include
+
+CFLAGS=-O
+PCRE_CFLAGS=-DUSE_BCOPY -DSTRERROR_FROM_ERRLIST
+
+EXIWHAT_PS_ARG=-ax
+EXIWHAT_EGREP_ARG='/exim( |$$)'
+EXIWHAT_KILL_SIGNAL=-30
+
+# End
diff --git a/src/OS/eximon.conf-Default b/src/OS/eximon.conf-Default
new file mode 100644
index 000000000..08ef41537
--- /dev/null
+++ b/src/OS/eximon.conf-Default
@@ -0,0 +1,43 @@
+# $Cambridge: exim/src/OS/eximon.conf-Default,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+# Exim: Default settings for the eximon script which fires up the Exim monitor.
+# These can be overridden by OS-specific scripts and local installation
+# scripts, and also at run time by shell variables.
+
+# The name of the eximon binary, usually the same as the eximon script,
+# with .bin stuck on the end.
+
+EXIMON_BINARY=${EXIMON_BINARY-$0.bin}
+
+# The remaining parameters are values likely to be changed to suit the
+# user's taste. They are documented in the EDITME file.
+
+WINDOW_TITLE=${EXIMON_WINDOW_TITLE-'"${hostname} eximon"'}
+
+ACTION_OUTPUT=${EXIMON_ACTION_OUTPUT-no}
+ACTION_QUEUE_UPDATE=${EXIMON_ACTION_QUEUE_UPDATE-yes}
+BODY_MAX=${EXIMON_BODY_MAX-20000}
+LOG_DEPTH=${EXIMON_LOG_DEPTH-300}
+LOG_WIDTH=${EXIMON_LOG_WIDTH-${EXIMON_WIDTH-950}}
+LOG_BUFFER=${EXIMON_LOG_BUFFER-20K}
+LOG_FONT=${EXIMON_LOG_FONT--misc-fixed-medium-r-normal-*-14-140-*-*-*-*-iso8859-1}
+LOG_STRIPCHARTS='/ <= /in/
+                 / => /out/
+                 / => .+ R=local/local/
+                 / => .+ T=[^ ]*smtp/smtp/'
+MENU_EVENT=${EXIMON_MENU_EVENT-'Shift<Btn1Down>'}
+MIN_HEIGHT=${EXIMON_MIN_HEIGHT-162}
+MIN_WIDTH=${EXIMON_MIN_WIDTH-103}
+QUEUE_DEPTH=${EXIMON_QUEUE_DEPTH-200}
+QUEUE_WIDTH=${EXIMON_QUEUE_WIDTH-${EXIMON_WIDTH-950}}
+QUEUE_FONT=${EXIMON_QUEUE_FONT-${LOG_FONT}}
+QUEUE_MAX_ADDRESSES=${EXIMON_QUEUE_MAX_ADDRESSES-10}
+QUEUE_INTERVAL=${EXIMON_QUEUE_INTERVAL-300}
+QUEUE_STRIPCHART_NAME=${EXIMON_QUEUE_STRIPCHART_NAME-queue}
+SIZE_STRIPCHART=${EXIMON_SIZE_STRIPCHART}
+SIZE_STRIPCHART_NAME=${EXIMON_SIZE_STRIPCHART_NAME}
+START_SMALL=${EXIMON_START_SMALL-no}
+STRIPCHART_INTERVAL=${EXIMON_STRIPCHART_INTERVAL-60}
+TEXT_DEPTH=${EXIMON_TEXT_DEPTH-200}
+
+# End
diff --git a/src/OS/os.Configuring b/src/OS/os.Configuring
new file mode 100644
index 000000000..df6c57d8d
--- /dev/null
+++ b/src/OS/os.Configuring
@@ -0,0 +1,209 @@
+$Cambridge: exim/src/OS/os.Configuring,v 1.1 2004/10/06 15:07:39 ph10 Exp $
+
+Configuring Exim for different Operating Systems
+------------------------------------------------
+
+These notes describe the way in which Exim is configured at the C program level
+for different operating systems. The normal configuration options that apply
+independently of the operating system are specified by creating files in the
+Local directory, as described in chapter 4 of the manual.
+
+These notes cover the os.* files in the OS directory, and contain information
+for people who want to port the program to some new OS, or to modify the
+configuration for an existing port. If you are just wanting to compile Exim on
+a system that it already knows about, you do not need to read further unless
+there are problems.
+
+The os.c-<ostype> files
+-----------------------
+
+There may be an os.c-<ostype> file for each operating system, but for many of
+them it is not necessary. No error occurs is there isn't one. There is a
+generic file called os.c which contains code that is common to two or more OS
+for setting a restarting or a non-restarting signal, for computing the load
+average, and for finding all the network interface addresses. A few OS have
+their own individual code for one or more of these. When they do, the code is
+put into an os.c-<ostype> file, which also defines a macro such as
+OS_RESTARTING_SIGNAL (for example) to cut out the common code in the generic
+os.c.
+
+The os.h-<ostype> files
+-----------------------
+
+For each OS that Exim knows about, there is an os.h-<ostype> file, where
+<ostype> is the OS name. The relevant file is included as a C header file for
+all Exim compilation by pointing a symbolic link called os.h at it from the
+build directory. The settings are as follows:
+
+The select() function
+---------------------
+
+There is a difference in the data type for the second argument to the select()
+function in some OS. The macro SELECT_ARG2_TYPE can be used to define the type.
+If it is not defined in os.h, then it is defaulted to fs_set in exim.h.
+
+The dn_expand() function
+------------------------
+
+There is a difference in the data type for the fourth argument to the
+dn_expand() function in some OS. The macro DN_EXPAND_ARG4_TYPE can be used to
+define the type. If it is not defined in os.h, then it is defaulted to char *
+in exim.h.
+
+The h_errno variable
+--------------------
+
+If NEED_H_ERRNO is defined, then a definition of the form
+
+extern int h_errno
+
+is included in the compiled code of Exim.
+
+The strerror() function
+-----------------------
+
+Most systems provide the ANSI standard strerror() function; older systems may
+instead have an errlist[] variable in which to look up error texts. Defining
+STRERROR_FROM_ERRLIST causes Exim to build its own strerror() function that
+mimics the ANSI function by lookup up the error code in errlist.
+
+Truncating files
+----------------
+
+The fcntl() option for truncating the length of a file is called F_FREESP in
+most systems; in some, however, it is called O_TRUNC. Some os.h files define
+F_FREESP to be O_TRUNC for this reason.
+
+Finding local interfaces
+------------------------
+
+The SIOCGIFCONF ioctl for finding local interfaces behaves differently on BSD
+systems. It returns a vector of ifreq blocks containing sockaddr structures
+that can be longer than their sizeof definition, making the returned ifreq
+blocks longer than their sizeof definitions. BSD sockaddrs structures contain
+an sa_len field giving the actual size. To cope with difference, there is a
+macro called HAVE_SA_LEN. If it is defined, code that works on BSD systems is
+used. Otherwise, the objects returned by SIOCGIFCONF are assumed to be of
+length sizeof(struct ifreq).
+
+On some operating systems, the SIOCGIFCONF ioctl returns the IP addresses
+with the list of interfaces, and there is no need to call SIOCGIFADDR for each
+individual address. Mostly, making the second call does no harm, but on Linux
+when there are IP aliases, it causes things to go wrong. This also happens on
+BSDI. Therefore, there is now a macro to cut it out, called
+SIOCGIFCONF_GIVES_ADDR.
+
+Note that, if IPv6 support is configured, Exim cannot find the IPv6 addresses
+on local interfaces by itself. You need to set the local_interfaces option in
+this situation.
+
+Computing load averages
+-----------------------
+
+There are several different ways that load averages are computed. One-off code
+is put in the os.c-<ostype>, but several OS use similar methods, and these
+are coded in the generic os.c, using a number of parameters to make variations
+between OS.
+
+Sometimes the load average is not available to unprivileged callers. If
+LOAD_AVG_NEEDS_ROOT is set, Exim ensures that it is root before trying to
+obtain a load average value.
+
+(1) If HAVE_BSD_GETLOADAVG is defined, Exim uses a simple call to the
+getloadavg() function.
+
+(2) If HAVE_KSTAT is defined, Exim uses the kstat package as found in Solaris 2
+(but nowhere else as yet). It uses some supplementary definitions:
+
+  LOAD_AVG_KSTAT          the kstat to use
+  LOAD_AVG_KSTAT_MODULE   the module to access
+  LOAD_AVG_KSTAT_SYMBOL   the symbol containing the value we want
+  LOAD_AVG_KSTAT_FIELD    the field identity
+
+(3) If HAVE_DEV_KMEM is defined, Exim reads load average values from the
+/dev/kmem device. It uses some supplementary definitions:
+
+  LOAD_AVG_TYPE           the data type
+  LOAD_AVG_SYMBOL         the symbol to look up
+  KERNEL_PATH             the name of the kernel
+  FSCALE                  a scaling factor
+
+Sometimes FSCALE is defined in system headers so need not be defined in the
+os.h-<ostype> file.
+
+Glibc systems and IP options
+----------------------------
+
+The code for inspecting IP options is the same in all OS except for systems
+using glibc (e.g. Linux), which uses a different structure to return data from
+getsockopt(). To handle this, there is a macro called
+
+  GLIBC_IP_OPTIONS
+
+which should be set for Linux (in os.h-Linux) and any other operating system
+that uses glibc.
+
+Options for statvfs()
+---------------------
+
+The following settings apply to the compilation of the Exim monitor as well as
+to the main Exim binary.
+
+#undefine HAVE_STATFS
+
+Exim has options for checking the amount of space in the spool partition
+before accepting a message, and the monitor has the ability to display a
+stripchart of the percentage fullness of a particular disc partition, usually
+/var/spool/mail. The standard way of finding out the data is to call the
+statvfs() function, but some operating systems use statfs() and some may not
+have the ability at all. The Exim code uses STATVFS() for this function and
+this gets defined appropriately. HAVE_STATFS is defined before including the
+os.h file; undefining it suppresses the code for checking a partition in the
+main binary, and for monitoring disc partition in the monitor.
+
+When HAVE_STATFS is defined, the distinction between statvfs() and statfs() is
+made by checking HAVE_SYS_STATVFS_H. If it is defined, then sys/statvfs.h is
+included. Otherwise, STATVFS() is defined as a macro for statfs(), and some
+further includes are done, according to the following definitions:
+
+#define HAVE_SYS_MOUNT_H
+#define HAVE_VFS_H
+
+Each of those definitions causes the inclusion of the corresponding system
+header file in the Exim monitor compilation. For example, the first one causes
+
+#include <sys/mount.h>
+
+to be obeyed. Different systems may require different combinations of these
+headers.
+
+The sys/resource.h header
+-------------------------
+
+One OS does not have the sys/resource.h header. If NO_SYS_RESOURCE_H is defined
+in an os.h-<ostype> file, then the #include for this header is skipped in
+exim.h.
+
+The crypt_h header
+------------------
+
+Some OS require crypt.h to be included to get a prototype for the crypt()
+function. This is needed only when compiling with AUTH support. If CRYPT_H is
+defined, then this header is included.
+
+mmap() support
+--------------
+
+The CDB support includes the option of handling file operations by using
+mmap()/munmap(). This gives a reasonable performance increase which will
+probably scale over multiple processes (since the files are mapped read-only
+shared). The vast majority of modern operating systems will support mmap
+(certainly in the simplified way that it is being used here). For example any
+BSD 4.x derived or POSIX compliant system will support it, as will pretty much
+any system using dynamically shared link libraries.
+
+If the OS is believed to support mmap() then the symbol HAVE_MMAP is defined.
+Not all systems that support mmap will have had their config files updated to
+reflect this. Currently Linux, Sun, BSD and SGI/mips systems have been updated.
+
+*** End ***
diff --git a/src/OS/os.c-GNU b/src/OS/os.c-GNU
new file mode 100644
index 000000000..52316a73d
--- /dev/null
+++ b/src/OS/os.c-GNU
@@ -0,0 +1,57 @@
+/* $Cambridge: exim/src/OS/os.c-GNU,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/*************************************************
+*     Exim - an Internet mail transport agent    *
+*************************************************/
+
+/* See the file NOTICE for conditions of use and distribution. */
+
+/* GNU-specific code. This is concatenated onto the generic src/os.c file.
+GNU/Hurd has approximately the same way to determine the load average as NeXT,
+so a variant of this could also be in the generic os.c file. See the GNU EMacs
+getloadavg.c file, from which this snippet was derived. getloadavg.c from Emacs
+is copyrighted by the FSF under the terms of the GPLv2 or any later version.
+Changes are hereby placed under the same license, as requested by the GPL. */
+
+#ifndef OS_LOAD_AVERAGE
+#define OS_LOAD_AVERAGE
+
+#include <mach.h>
+
+static processor_set_t default_set;
+static int getloadavg_initialized;
+
+int
+os_getloadavg (void)
+{
+host_t host;
+struct processor_set_basic_info info;
+unsigned info_count;
+
+if (!getloadavg_initialized)
+  {
+  if (processor_set_default (mach_host_self(), &default_set) == KERN_SUCCESS)
+    getloadavg_initialized = 1;
+  }
+
+if (getloadavg_initialized)
+  {
+  info_count = PROCESSOR_SET_BASIC_INFO_COUNT;
+  if (processor_set_info(default_set, PROCESSOR_SET_BASIC_INFO, &host,
+       (processor_set_info_t)&info, &info_count) != KERN_SUCCESS)
+    getloadavg_initialized = 0;
+  else
+    {
+    #if LOAD_SCALE == 1000
+    return info.load_average;
+    #else
+    return (int) (((double) info.load_average * 1000) / LOAD_SCALE));
+    #endif
+    }
+  }
+
+return -1;
+}
+#endif  /* OS_LOAD_AVERAGE */
+
+/* End of os.c-GNU */
diff --git a/src/OS/os.c-HI-OSF b/src/OS/os.c-HI-OSF
new file mode 100644
index 000000000..a21765022
--- /dev/null
+++ b/src/OS/os.c-HI-OSF
@@ -0,0 +1,37 @@
+/* $Cambridge: exim/src/OS/os.c-HI-OSF,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/*************************************************
+*     Exim - an Internet mail transport agent    *
+*************************************************/
+
+/* Copyright (c) University of Cambridge 2001 */
+/* See the file NOTICE for conditions of use and distribution. */
+
+/* HI-OSF-specific code. This is concatenated onto the generic
+src/os.c file. OSF has an apparently unique way of getting the
+load average, so we provide a unique function here, and define
+OS_LOAD_AVERAGE to stop src/os.c trying to provide the function. */
+
+#ifndef OS_LOAD_AVERAGE
+#define OS_LOAD_AVERAGE
+
+#include <sys/table.h>
+
+int
+os_getloadavg(void)
+{
+double avg;
+struct tbl_loadavg load_avg;
+
+table (TBL_LOADAVG, 0, &load_avg, 1, sizeof (load_avg));
+
+avg = (load_avg.tl_lscale == 0)?
+  load_avg.tl_avenrun.d[0] :
+  (load_avg.tl_avenrun.l[0] / (double)load_avg.tl_lscale);
+
+return (int)(avg * 1000.0);
+}
+
+#endif  /* OS_LOAD_AVERAGE */
+
+/* End of os.c-HI-OSF */
diff --git a/src/OS/os.c-IRIX b/src/OS/os.c-IRIX
new file mode 100644
index 000000000..50d44feb7
--- /dev/null
+++ b/src/OS/os.c-IRIX
@@ -0,0 +1,120 @@
+/* $Cambridge: exim/src/OS/os.c-IRIX,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/*************************************************
+*     Exim - an Internet mail transport agent    *
+*************************************************/
+
+/* Copyright (c) University of Cambridge 2001 */
+/* See the file NOTICE for conditions of use and distribution. */
+
+/* Irix-specific code. This is concatenated onto the generic src/os.c file.
+Irix has a unique way of finding all the network interfaces, so we provide a
+unique function here, and define FIND_RUNNING_INTERFACES to stop src/os.c
+trying to provide the function. The macro may be set initially anyway, when
+compiling os. for utilities that don't want this function. */
+
+#ifndef FIND_RUNNING_INTERFACES
+#define FIND_RUNNING_INTERFACES
+
+/* This is the special form of the function using sysctl() which is the only
+form that returns all the aliases on IRIX systems. This code has its origins
+in a sample program that came from within SGI. */
+
+#include <sys/sysctl.h>
+#include <net/if_dl.h>
+#include <net/if_types.h>
+#include <net/soioctl.h>
+#include <net/route.h>
+
+#define ROUNDUP(a) ((a) > 0 ? (1 + (((a) - 1) | (sizeof(__uint64_t) -1))) \
+                    : sizeof(__uint64_t))
+#ifdef _HAVE_SA_LEN
+#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
+#else
+#define ADVANCE(x, n) (x += ROUNDUP(_FAKE_SA_LEN_DST(n)))
+#endif
+
+
+ip_address_item *
+os_find_running_interfaces(void)
+{
+ip_address_item *yield = NULL;
+ip_address_item *last = NULL;
+ip_address_item *next;
+
+size_t needed;
+int mib[6];
+char *buf, *nextaddr, *lim;
+register struct if_msghdr *ifm;
+
+mib[0] = CTL_NET;
+mib[1] = PF_ROUTE;
+mib[2] = 0;
+mib[3] = 0;
+mib[4] = NET_RT_IFLIST;
+mib[5] = 0;
+
+/* Get an estimate of the amount of store needed, then get the store and
+get the data into it. Any error causes a panic death. */
+
+if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
+  log_write(0, LOG_PANIC_DIE, "iflist-sysctl-estimate failed: %s",
+    strerror(errno));
+
+buf = store_get(needed);
+
+if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
+  log_write(0, LOG_PANIC_DIE, "sysctl of ifnet list failed: %s",
+    strerror(errno));
+
+/* Now fish out the data for each interface */
+
+lim  = buf + needed;
+for (nextaddr = buf; nextaddr < lim; nextaddr += ifm->ifm_msglen)
+  {
+  ifm = (struct if_msghdr *)nextaddr;
+
+  if (ifm->ifm_type != RTM_IFINFO)
+    {
+    struct ifa_msghdr *ifam = (struct ifa_msghdr *)ifm;
+    struct sockaddr_in *mask = NULL, *addr = NULL;
+
+    if ((ifam->ifam_addrs & RTA_NETMASK) != 0)
+      mask = (struct sockaddr_in *)(ifam + 1);
+
+    if ((ifam->ifam_addrs & RTA_IFA) != 0)
+      {
+      char *cp = (char *)mask;
+      struct sockaddr *sa = (struct sockaddr *)mask;
+      ADVANCE(cp, sa);
+      addr = (struct sockaddr_in *)cp;
+      }
+
+    /* Create a data block for the address, fill in the data, and put it on
+    the chain. This data has to survive for ever, so use malloc. */
+
+    if (addr != NULL)
+      {
+      next = store_malloc(sizeof(ip_address_item));
+      next->next = NULL;
+      next->port = 0;
+      (void)host_ntoa(-1, addr, next->address, NULL);
+
+      if (yield == NULL) yield = last = next; else
+        {
+        last->next = next;
+        last = next;
+        }
+
+      DEBUG(D_interface) debug_printf("Actual local interface address is %s\n",
+        last->address);
+      }
+    }
+  }
+
+return yield;
+}
+
+#endif  /* FIND_RUNNING_INTERFACES */
+
+/* End of os.c-IRIX */
diff --git a/src/OS/os.c-IRIX6 b/src/OS/os.c-IRIX6
new file mode 100644
index 000000000..5bb251554
--- /dev/null
+++ b/src/OS/os.c-IRIX6
@@ -0,0 +1,120 @@
+/* $Cambridge: exim/src/OS/os.c-IRIX6,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/*************************************************
+*     Exim - an Internet mail transport agent    *
+*************************************************/
+
+/* Copyright (c) University of Cambridge 2001 */
+/* See the file NOTICE for conditions of use and distribution. */
+
+/* Irix-specific code. This is concatenated onto the generic src/os.c file.
+Irix has a unique way of finding all the network interfaces, so we provide a
+unique function here, and define FIND_RUNNING_INTERFACES to stop src/os.c
+trying to provide the function. The macro may be set initially anyway, when
+compiling os. for utilities that don't want this function. */
+
+#ifndef FIND_RUNNING_INTERFACES
+#define FIND_RUNNING_INTERFACES
+
+/* This is the special form of the function using sysctl() which is the only
+form that returns all the aliases on IRIX systems. This code has its origins
+in a sample program that came from within SGI. */
+
+#include <sys/sysctl.h>
+#include <net/if_dl.h>
+#include <net/if_types.h>
+#include <net/soioctl.h>
+#include <net/route.h>
+
+#define ROUNDUP(a) ((a) > 0 ? (1 + (((a) - 1) | (sizeof(__uint64_t) -1))) \
+                    : sizeof(__uint64_t))
+#ifdef _HAVE_SA_LEN
+#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
+#else
+#define ADVANCE(x, n) (x += ROUNDUP(_FAKE_SA_LEN_DST(n)))
+#endif
+
+
+ip_address_item *
+os_find_running_interfaces(void)
+{
+ip_address_item *yield = NULL;
+ip_address_item *last = NULL;
+ip_address_item *next;
+
+size_t needed;
+int mib[6];
+char *buf, *nextaddr, *lim;
+register struct if_msghdr *ifm;
+
+mib[0] = CTL_NET;
+mib[1] = PF_ROUTE;
+mib[2] = 0;
+mib[3] = 0;
+mib[4] = NET_RT_IFLIST;
+mib[5] = 0;
+
+/* Get an estimate of the amount of store needed, then get the store and
+get the data into it. Any error causes a panic death. */
+
+if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
+  log_write(0, LOG_PANIC_DIE, "iflist-sysctl-estimate failed: %s",
+    strerror(errno));
+
+buf = store_get(needed);
+
+if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
+  log_write(0, LOG_PANIC_DIE, "sysctl of ifnet list failed: %s",
+    strerror(errno));
+
+/* Now fish out the data for each interface */
+
+lim  = buf + needed;
+for (nextaddr = buf; nextaddr < lim; nextaddr += ifm->ifm_msglen)
+  {
+  ifm = (struct if_msghdr *)nextaddr;
+
+  if (ifm->ifm_type != RTM_IFINFO)
+    {
+    struct ifa_msghdr *ifam = (struct ifa_msghdr *)ifm;
+    struct sockaddr_in *mask = NULL, *addr = NULL;
+
+    if ((ifam->ifam_addrs & RTA_NETMASK) != 0)
+      mask = (struct sockaddr_in *)(ifam + 1);
+
+    if ((ifam->ifam_addrs & RTA_IFA) != 0)
+      {
+      char *cp = (char *)mask;
+      struct sockaddr *sa = (struct sockaddr *)mask;
+      ADVANCE(cp, sa);
+      addr = (struct sockaddr_in *)cp;
+      }
+
+    /* Create a data block for the address, fill in the data, and put it on
+    the chain. This data has to survive for ever, so use malloc. */
+
+    if (addr != NULL)
+      {
+      next = store_malloc(sizeof(ip_address_item));
+      next->next = NULL;
+      next->port = 0;
+      (void)host_ntoa(-1, addr, next->address, NULL);
+
+      if (yield == NULL) yield = last = next; else
+        {
+        last->next = next;
+        last = next;
+        }
+
+      DEBUG(D_interface) debug_printf("Actual local interface address is %s\n",
+        last->address);
+      }
+    }
+  }
+
+return yield;
+}
+
+#endif  /* FIND_RUNNING_INTERFACES */
+
+/* End of os.c-IRIX */
diff --git a/src/OS/os.c-IRIX632 b/src/OS/os.c-IRIX632
new file mode 100644
index 000000000..b7e0994f1
--- /dev/null
+++ b/src/OS/os.c-IRIX632
@@ -0,0 +1,120 @@
+/* $Cambridge: exim/src/OS/os.c-IRIX632,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/*************************************************
+*     Exim - an Internet mail transport agent    *
+*************************************************/
+
+/* Copyright (c) University of Cambridge 2001 */
+/* See the file NOTICE for conditions of use and distribution. */
+
+/* Irix-specific code. This is concatenated onto the generic src/os.c file.
+Irix has a unique way of finding all the network interfaces, so we provide a
+unique function here, and define FIND_RUNNING_INTERFACES to stop src/os.c
+trying to provide the function. The macro may be set initially anyway, when
+compiling os. for utilities that don't want this function. */
+
+#ifndef FIND_RUNNING_INTERFACES
+#define FIND_RUNNING_INTERFACES
+
+/* This is the special form of the function using sysctl() which is the only
+form that returns all the aliases on IRIX systems. This code has its origins
+in a sample program that came from within SGI. */
+
+#include <sys/sysctl.h>
+#include <net/if_dl.h>
+#include <net/if_types.h>
+#include <net/soioctl.h>
+#include <net/route.h>
+
+#define ROUNDUP(a) ((a) > 0 ? (1 + (((a) - 1) | (sizeof(__uint64_t) -1))) \
+                    : sizeof(__uint64_t))
+#ifdef _HAVE_SA_LEN
+#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
+#else
+#define ADVANCE(x, n) (x += ROUNDUP(_FAKE_SA_LEN_DST(n)))
+#endif
+
+
+ip_address_item *
+os_find_running_interfaces(void)
+{
+ip_address_item *yield = NULL;
+ip_address_item *last = NULL;
+ip_address_item *next;
+
+size_t needed;
+int mib[6];
+char *buf, *nextaddr, *lim;
+register struct if_msghdr *ifm;
+
+mib[0] = CTL_NET;
+mib[1] = PF_ROUTE;
+mib[2] = 0;
+mib[3] = 0;
+mib[4] = NET_RT_IFLIST;
+mib[5] = 0;
+
+/* Get an estimate of the amount of store needed, then get the store and
+get the data into it. Any error causes a panic death. */
+
+if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
+  log_write(0, LOG_PANIC_DIE, "iflist-sysctl-estimate failed: %s",
+    strerror(errno));
+
+buf = store_get(needed);
+
+if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
+  log_write(0, LOG_PANIC_DIE, "sysctl of ifnet list failed: %s",
+    strerror(errno));
+
+/* Now fish out the data for each interface */
+
+lim  = buf + needed;
+for (nextaddr = buf; nextaddr < lim; nextaddr += ifm->ifm_msglen)
+  {
+  ifm = (struct if_msghdr *)nextaddr;
+
+  if (ifm->ifm_type != RTM_IFINFO)
+    {
+    struct ifa_msghdr *ifam = (struct ifa_msghdr *)ifm;
+    struct sockaddr_in *mask = NULL, *addr = NULL;
+
+    if ((ifam->ifam_addrs & RTA_NETMASK) != 0)
+      mask = (struct sockaddr_in *)(ifam + 1);
+
+    if ((ifam->ifam_addrs & RTA_IFA) != 0)
+      {
+      char *cp = (char *)mask;
+      struct sockaddr *sa = (struct sockaddr *)mask;
+      ADVANCE(cp, sa);
+      addr = (struct sockaddr_in *)cp;
+      }
+
+    /* Create a data block for the address, fill in the data, and put it on
+    the chain. This data has to survive for ever, so use malloc. */
+
+    if (addr != NULL)
+      {
+      next = store_malloc(sizeof(ip_address_item));
+      next->next = NULL;
+      next->port = 0;
+      (void)host_ntoa(-1, addr, next->address, NULL);
+
+      if (yield == NULL) yield = last = next; else
+        {
+        last->next = next;
+        last = next;
+        }
+
+      DEBUG(D_interface) debug_printf("Actual local interface address is %s\n",
+        last->address);
+      }
+    }
+  }
+
+return yield;
+}
+
+#endif  /* FIND_RUNNING_INTERFACES */
+
+/* End of os.c-IRIX */
diff --git a/src/OS/os.c-IRIX65 b/src/OS/os.c-IRIX65
new file mode 100644
index 000000000..b6e3d66a0
--- /dev/null
+++ b/src/OS/os.c-IRIX65
@@ -0,0 +1,120 @@
+/* $Cambridge: exim/src/OS/os.c-IRIX65,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/*************************************************
+*     Exim - an Internet mail transport agent    *
+*************************************************/
+
+/* Copyright (c) University of Cambridge 2001 */
+/* See the file NOTICE for conditions of use and distribution. */
+
+/* Irix-specific code. This is concatenated onto the generic src/os.c file.
+Irix has a unique way of finding all the network interfaces, so we provide a
+unique function here, and define FIND_RUNNING_INTERFACES to stop src/os.c
+trying to provide the function. The macro may be set initially anyway, when
+compiling os. for utilities that don't want this function. */
+
+#ifndef FIND_RUNNING_INTERFACES
+#define FIND_RUNNING_INTERFACES
+
+/* This is the special form of the function using sysctl() which is the only
+form that returns all the aliases on IRIX systems. This code has its origins
+in a sample program that came from within SGI. */
+
+#include <sys/sysctl.h>
+#include <net/if_dl.h>
+#include <net/if_types.h>
+#include <net/soioctl.h>
+#include <net/route.h>
+
+#define ROUNDUP(a) ((a) > 0 ? (1 + (((a) - 1) | (sizeof(__uint64_t) -1))) \
+                    : sizeof(__uint64_t))
+#ifdef _HAVE_SA_LEN
+#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
+#else
+#define ADVANCE(x, n) (x += ROUNDUP(_FAKE_SA_LEN_DST(n)))
+#endif
+
+
+ip_address_item *
+os_find_running_interfaces(void)
+{
+ip_address_item *yield = NULL;
+ip_address_item *last = NULL;
+ip_address_item *next;
+
+size_t needed;
+int mib[6];
+char *buf, *nextaddr, *lim;
+register struct if_msghdr *ifm;
+
+mib[0] = CTL_NET;
+mib[1] = PF_ROUTE;
+mib[2] = 0;
+mib[3] = 0;
+mib[4] = NET_RT_IFLIST;
+mib[5] = 0;
+
+/* Get an estimate of the amount of store needed, then get the store and
+get the data into it. Any error causes a panic death. */
+
+if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
+  log_write(0, LOG_PANIC_DIE, "iflist-sysctl-estimate failed: %s",
+    strerror(errno));
+
+buf = store_get(needed);
+
+if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
+  log_write(0, LOG_PANIC_DIE, "sysctl of ifnet list failed: %s",
+    strerror(errno));
+
+/* Now fish out the data for each interface */
+
+lim  = buf + needed;
+for (nextaddr = buf; nextaddr < lim; nextaddr += ifm->ifm_msglen)
+  {
+  ifm = (struct if_msghdr *)nextaddr;
+
+  if (ifm->ifm_type != RTM_IFINFO)
+    {
+    struct ifa_msghdr *ifam = (struct ifa_msghdr *)ifm;
+    struct sockaddr_in *mask = NULL, *addr = NULL;
+
+    if ((ifam->ifam_addrs & RTA_NETMASK) != 0)
+      mask = (struct sockaddr_in *)(ifam + 1);
+
+    if ((ifam->ifam_addrs & RTA_IFA) != 0)
+      {
+      char *cp = (char *)mask;
+      struct sockaddr *sa = (struct sockaddr *)mask;
+      ADVANCE(cp, sa);
+      addr = (struct sockaddr_in *)cp;
+      }
+
+    /* Create a data block for the address, fill in the data, and put it on
+    the chain. This data has to survive for ever, so use malloc. */
+
+    if (addr != NULL)
+      {
+      next = store_malloc(sizeof(ip_address_item));
+      next->next = NULL;
+      next->port = 0;
+      (void)host_ntoa(-1, addr, next->address, NULL);
+
+      if (yield == NULL) yield = last = next; else
+        {
+        last->next = next;
+        last = next;
+        }
+
+      DEBUG(D_interface) debug_printf("Actual local interface address is %s\n",
+        last->address);
+      }
+    }
+  }
+
+return yield;
+}
+
+#endif  /* FIND_RUNNING_INTERFACES */
+
+/* End of os.c-IRIX */
diff --git a/src/OS/os.c-Linux b/src/OS/os.c-Linux
new file mode 100644
index 000000000..5589a015b
--- /dev/null
+++ b/src/OS/os.c-Linux
@@ -0,0 +1,155 @@
+/* $Cambridge: exim/src/OS/os.c-Linux,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/*************************************************
+*     Exim - an Internet mail transport agent    *
+*************************************************/
+
+/* Copyright (c) University of Cambridge 1997 - 2001 */
+/* See the file NOTICE for conditions of use and distribution. */
+
+/* Linux-specific code. This is concatenated onto the generic
+src/os.c file. */
+
+
+/*************************************************
+*              Load average computation          *
+*************************************************/
+
+/*Linux has an apparently unique way of getting the load average, so we provide
+a unique function here, and define OS_LOAD_AVERAGE to stop src/os.c trying to
+provide the function. However, when compiling os.c for utilities, we may not
+want this at all, so check that it isn't set first. */
+
+#ifndef OS_LOAD_AVERAGE
+#define OS_LOAD_AVERAGE
+
+/* Linux has 2 ways of returning load average:
+
+  (1) Do a read on /proc/loadavg
+  (2) Use the sysinfo library function and syscall
+
+The latter is simpler but in Linux 2.0 - 2.2 (and probably later releases) is
+exceptionally slow - 10-50ms per call is not unusual and about 100x slow the
+first method. This cripples high performance mail servers by increasing CPU
+utilisation by 3-5x.
+
+In Exim's very early days, it used the 1st method. Later, it switched to the
+2nd method. Now it tries the 1st method and falls back to the 2nd if /proc is
+unavailable. */
+
+#include <sys/sysinfo.h>
+
+static int
+linux_slow_getloadavg(void)
+{
+struct sysinfo s;
+double avg;
+if (sysinfo(&s) < 0) return -1;
+avg = (double) (s.loads[0]) / (1<<SI_LOAD_SHIFT);
+return (int)(avg * 1000.0);
+}
+
+int
+os_getloadavg(void)
+{
+char buffer[40];
+double avg;
+int count;
+int fd = open ("/proc/loadavg", O_RDONLY);
+if (fd == -1) return linux_slow_getloadavg();
+count = read (fd, buffer, sizeof(buffer));
+(void)close (fd);
+if (count <= 0) return linux_slow_getloadavg();
+count = sscanf (buffer, "%lf", &avg);
+if (count < 1) return linux_slow_getloadavg();
+return (int)(avg * 1000.0);
+}
+#endif  /* OS_LOAD_AVERAGE */
+
+
+
+
+
+/*************************************************
+*         Finding interface addresses            *
+*************************************************/
+
+/* This function is not required for utilities; we cut it out if
+FIND_RUNNING_INTERFACES is already defined. */
+
+#ifndef FIND_RUNNING_INTERFACES
+
+/* This code, contributed by Jason Gunthorpe, appears to be the current
+way of finding IPv6 interfaces in Linux. It first calls the common function in
+order to find IPv4 interfaces, then grobbles around to find the others. Jason
+said, "This is so horrible, don't look. Slightly ripped from net-tools
+ifconfig." It gets called by virtue of os_find_running_interfaces being defined
+as a macro for os_find_running_interfaces_linux in the os.h-Linux file. */
+
+ip_address_item *
+os_find_running_interfaces_linux(void)
+{
+ip_address_item *yield = NULL;
+
+#if HAVE_IPV6
+ip_address_item *last = NULL;
+ip_address_item  *next;
+char addr6p[8][5];
+unsigned int plen, scope, dad_status, if_idx;
+char devname[20];
+FILE *f;
+#endif
+
+yield = os_common_find_running_interfaces();
+
+#if HAVE_IPV6
+
+/* Open the /proc file; give up if we can't. */
+
+if ((f = fopen("/proc/net/if_inet6", "r")) == NULL) return yield;
+
+/* Pick out the data from within the file, and add it on to the chain */
+
+last = yield;
+if (last != NULL) while (last->next != NULL) last = last->next;
+
+while (fscanf(f, "%4s%4s%4s%4s%4s%4s%4s%4s %02x %02x %02x %02x %20s\n",
+	     addr6p[0], addr6p[1], addr6p[2], addr6p[3],
+	     addr6p[4], addr6p[5], addr6p[6], addr6p[7],
+	     &if_idx, &plen, &scope, &dad_status, devname) != EOF)
+  {
+  struct sockaddr_in6 addr;
+
+  /* This data has to survive for ever, so use malloc. */
+
+  next = store_malloc(sizeof(ip_address_item));
+  next->next = NULL;
+  next->port = 0;
+  sprintf(CS next->address, "%s:%s:%s:%s:%s:%s:%s:%s",
+	 addr6p[0], addr6p[1], addr6p[2], addr6p[3],
+	 addr6p[4], addr6p[5], addr6p[6], addr6p[7]);
+
+  /* Normalize the representation */
+
+  inet_pton(AF_INET6, CS next->address, &addr.sin6_addr);
+  inet_ntop(AF_INET6, &addr.sin6_addr, CS next->address, sizeof(next->address));
+
+  if (yield == NULL) yield = last = next; else
+    {
+    last->next = next;
+    last = next;
+    }
+
+  DEBUG(D_interface)
+    debug_printf("Actual local interface address is %s (%s)\n", last->address,
+      devname);
+  }
+fclose(f);
+#endif  /* HAVE_IPV6 */
+
+return yield;
+}
+
+#endif  /* FIND_RUNNING_INTERFACES */
+
+/* End of os.c-Linux */
diff --git a/src/OS/os.c-Linux-libc5 b/src/OS/os.c-Linux-libc5
new file mode 100644
index 000000000..cbda9e6fa
--- /dev/null
+++ b/src/OS/os.c-Linux-libc5
@@ -0,0 +1,39 @@
+/* $Cambridge: exim/src/OS/os.c-Linux-libc5,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/*************************************************
+*     Exim - an Internet mail transport agent    *
+*************************************************/
+
+/* Copyright (c) University of Cambridge 2001 */
+/* See the file NOTICE for conditions of use and distribution. */
+
+/* Linux-specific code. This is concatenated onto the generic src/os.c file.
+Linux has an apparently unique way of getting the load average, so we provide a
+unique function here, and define OS_LOAD_AVERAGE to stop src/os.c trying to
+provide the function. The macro may be set initially anyway, when compiling os.
+for utilities that don't want this function. */
+
+#ifndef OS_LOAD_AVERAGE
+#define OS_LOAD_AVERAGE
+
+int
+os_getloadavg(void)
+{
+char buffer[40];
+double avg;
+int count;
+int fd = open ("/proc/loadavg", O_RDONLY);
+if (fd == -1) return -1;
+count = read (fd, buffer, sizeof(buffer));
+(void)close (fd);
+if (count <= 0) return -1;
+count = sscanf (buffer, "%lf", &avg);
+if (count < 1) return -1;
+
+return (int)(avg * 1000.0);
+}
+
+#endif  /* OS_LOAD_AVERAGE */
+
+/* End of os.c-Linux */
+
diff --git a/src/OS/os.c-OSF1 b/src/OS/os.c-OSF1
new file mode 100644
index 000000000..eb5032eaf
--- /dev/null
+++ b/src/OS/os.c-OSF1
@@ -0,0 +1,38 @@
+/* $Cambridge: exim/src/OS/os.c-OSF1,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/*************************************************
+*     Exim - an Internet mail transport agent    *
+*************************************************/
+
+/* Copyright (c) University of Cambridge 2001 */
+/* See the file NOTICE for conditions of use and distribution. */
+
+/* OSF1-specific code. This is concatenated onto the generic src/os.c file.
+OSF1 has an apparently unique way of getting the load average, so we provide a
+unique function here, and define OS_LOAD_AVERAGE to stop src/os.c trying to
+provide the function. The macro may be set initially anyway, when compiling os.
+for utilities that don't want this function. */
+
+#ifndef OS_LOAD_AVERAGE
+#define OS_LOAD_AVERAGE
+
+#include <sys/table.h>
+
+int
+os_getloadavg(void)
+{
+double avg;
+struct tbl_loadavg load_avg;
+
+table (TBL_LOADAVG, 0, &load_avg, 1, sizeof (load_avg));
+
+avg = (load_avg.tl_lscale == 0)?
+  load_avg.tl_avenrun.d[0] :
+  (load_avg.tl_avenrun.l[0] / (double)load_avg.tl_lscale);
+
+return (int)(avg * 1000.0);
+}
+
+#endif  /* OS_LOAD_AVERAGE */
+
+/* End of os.c-OSF1 */
diff --git a/src/OS/os.c-cygwin b/src/OS/os.c-cygwin
new file mode 100644
index 000000000..739605590
--- /dev/null
+++ b/src/OS/os.c-cygwin
@@ -0,0 +1,652 @@
+/* $Cambridge: exim/src/OS/os.c-cygwin,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/*************************************************
+*     Exim - an Internet mail transport agent    *
+*************************************************/
+
+/* Cygwin-specific code. December 2002
+   This is concatenated onto the generic src/os.c file.
+
+   This code was supplied by Pierre A. Humblet <Pierre.Humblet@ieee.org>
+*/
+
+/* We need a special mkdir that
+   allows names starting with // */
+#undef mkdir
+int cygwin_mkdir( const char *path, mode_t mode )
+{
+  const char * p = path;
+  if (*p == '/') while(*(p+1) == '/') p++;
+  return mkdir(p, mode);
+}
+
+/* We have strsignal but cannot use #define
+   because types don't match */
+#define OS_STRSIGNAL /* src/os.c need not provide it */
+char * os_strsignal(int sig)
+{
+  return (char *) strsignal(sig);
+}
+
+#ifndef COMPILE_UTILITY /* Utilities don't need special code */
+#ifdef INCLUDE_MINIRES
+#include "../minires/minires.c"
+#include "../minires/os-interface.c"
+#endif
+
+#ifdef INCLUDE_PAM
+#include "../pam/pam.c"
+#endif
+
+unsigned int cygwin_WinVersion;
+
+/* Conflict between Windows definitions and others */
+#ifdef NOERROR
+#undef NOERROR
+#endif
+#ifdef DELETE
+#undef DELETE
+#endif
+
+#include <windows.h>
+#include <sys/cygwin.h>
+
+/* Special static variables */
+static BOOL cygwin_debug = FALSE;
+static int privileged = 1; /* when not privileged, setuid = noop */
+
+#undef setuid
+int cygwin_setuid(uid_t uid )
+{
+  int res;
+  if (privileged <= 0) return 0;
+  else {
+    res = setuid(uid);
+    if (cygwin_debug)
+      fprintf(stderr, "setuid %lu %lu %d pid: %d\n",
+              uid, getuid(),res, getpid());
+  }
+  return res;
+}
+
+#undef setgid
+int cygwin_setgid(gid_t gid )
+{
+  int res;
+  if (privileged <= 0) return 0;
+  else {
+    res = setgid(gid);
+    if (cygwin_debug)
+      fprintf(stderr, "setgid %lu %lu %d pid: %d\n",
+	      gid, getgid(), res, getpid());
+  }
+  return res;
+}
+
+/* Background processes run at lower priority */
+static void setpriority()
+{
+  if (!SetPriorityClass(GetCurrentProcess(), BELOW_NORMAL_PRIORITY_CLASS))
+    SetPriorityClass(GetCurrentProcess(), IDLE_PRIORITY_CLASS);
+  return;
+}
+
+
+/* GetVersion()
+   MSB: 1 for 95/98/ME; Next 7: build number, except for 95/98/ME
+   Next byte: 0
+   Next byte: minor version of OS
+   Low  byte: major version of OS (3 or 4 for for NT, 5 for 2000 and XP) */
+#define VERSION_IS_58M(x) (x & 0x80000000) /* 95, 98, Me   */
+#define VERSION_IS_NT(x)  ((x & 0XFF) < 5) /* NT 4 or 3.51 */
+
+/*
+  Routine to find if process or thread is privileged
+*/
+
+enum {
+  CREATE_BIT = 1,
+  RESTORE_BIT = 2
+};
+
+static DWORD get_privileges ()
+{
+  char buffer[1024];
+  DWORD i, length;
+  HANDLE hToken = NULL;
+  PTOKEN_PRIVILEGES privs;
+  LUID cluid, rluid;
+  DWORD ret = 0;
+
+  privs = (PTOKEN_PRIVILEGES) buffer;
+
+  if (OpenProcessToken (GetCurrentProcess(), TOKEN_QUERY, &hToken)
+      && LookupPrivilegeValue (NULL, SE_CREATE_TOKEN_NAME, &cluid)
+      && LookupPrivilegeValue(NULL, SE_RESTORE_NAME, &rluid)
+      && (GetTokenInformation( hToken, TokenPrivileges,
+			       privs, sizeof (buffer), &length)
+	  || (GetLastError () == ERROR_INSUFFICIENT_BUFFER
+	      && (privs = (PTOKEN_PRIVILEGES) alloca (length))
+	      && GetTokenInformation(hToken, TokenPrivileges,
+				     privs, length, &length)))) {
+    for (i = 0; i < privs->PrivilegeCount; i++) {
+      if (privs->Privileges[i].Luid.QuadPart == cluid.QuadPart)
+	ret |= CREATE_BIT;
+      else if (privs->Privileges[i].Luid.QuadPart == rluid.QuadPart)
+	ret |= RESTORE_BIT;
+      else continue;
+      if (ret == (CREATE_BIT | RESTORE_BIT))
+	break;
+    }
+  }
+  else
+    fprintf(stderr, "has_create_token_privilege %ld\n", GetLastError());
+
+  if (hToken)
+    CloseHandle(hToken);
+
+  return ret;
+}
+
+/* We use a special routine to initialize
+    cygwin_init is called from the OS_INIT macro in main(). */
+
+void cygwin_init(int argc, char ** argv, void * rup,
+                 void * eup, void * egp, void * cup)
+{
+  int i;
+  uid_t myuid, systemuid;
+  gid_t mygid, adminsgid;
+  struct passwd * pwp;
+  char *cygenv, win32_path[MAX_PATH];
+  SID(1, SystemSid, SECURITY_LOCAL_SYSTEM_RID);
+  SID(2, AdminsSid, SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_ADMINS);
+  DWORD priv_flags;
+
+  myuid = getuid();
+  mygid = getgid();
+  cygwin_WinVersion = GetVersion();
+  if ((cygenv = getenv("CYGWIN")) == NULL) cygenv = "";
+  /* Produce some debugging on stderr,
+     cannot yet use exim's debug functions.
+     Exim does not use -c and ignores -n.
+     Set lower priority for daemons */
+  for (i = 1; i < argc; i++) {
+    if (argv[i][0] == '-') {
+      if (argv[i][1] == 'c') {
+        argv[i][1] = 'n';  /* Replace -c by -n */
+        cygwin_debug = TRUE;
+        fprintf(stderr, "CYGWIN = \"%s\".", cygenv);
+        cygwin_conv_to_win32_path("/", win32_path);
+        fprintf(stderr, " Root / mapped to %s.\n", win32_path);
+      }
+      else if (argv[i][1] == 'b' && argv[i][2] == 'd')
+        setpriority();
+    }
+  }
+  if (VERSION_IS_58M(cygwin_WinVersion)) {
+    * (uid_t *) rup = myuid;  /* Pretend we are root */
+    * (uid_t *) eup = myuid;  /* ... and exim */
+    * (gid_t *) egp = mygid;
+    return;
+  }
+  /* Nt/2000/XP
+     We initially set the exim uid & gid to those of the "real exim",
+       or to the root uid (SYSTEM) and exim gid (ADMINS),
+     If privileged, we setuid to those.
+     We always set the configure uid to the system uid.
+     We always set the root uid to the real uid
+       to avoid useless execs following forks.
+     If not privileged and unable to chown,
+       we set the exim uid to our uid.
+     If unprivileged, we fake all subsequent setuid. */
+
+  priv_flags = get_privileges ();
+  privileged = !!(priv_flags & CREATE_BIT);
+
+  /* Get the system and admins uid from their sids,
+     or use the default values from the Makefile. */
+  if ((systemuid = cygwin_internal(CW_GET_UID_FROM_SID, & SystemSid)) == -1)
+    systemuid = * (uid_t *) eup;
+  if ((adminsgid = cygwin_internal(CW_GET_GID_FROM_SID, & AdminsSid)) == -1)
+    adminsgid = * (gid_t *) egp;
+
+  if ((pwp = getpwnam("exim")) != NULL) {
+    * (uid_t *) eup = pwp->pw_uid;  /* Set it according to passwd */
+    * (gid_t *) egp = pwp->pw_gid;
+  }
+  else {
+    * (uid_t *) eup = systemuid;
+    * (gid_t *) egp = adminsgid;
+  }
+
+  /* Set the configuration uid to the system uid.
+     Note that exim uid is also accepted as owner of exim.conf. */
+  * (uid_t *) cup = systemuid;
+
+  if (privileged) {             /* Can setuid */
+    if (cygwin_setgid(* (gid_t *) egp) /* Setuid to exim */
+        || cygwin_setuid(* (uid_t *) eup))
+      privileged = -1;		/* Problem... Perhaps not in 544 */
+  }
+
+  /* Pretend we are root to avoid useless execs.
+     We are limited by file access rights */
+  * (uid_t *) rup = getuid ();
+
+  /* If we have not setuid to exim and cannot chown,
+     set the exim uid to our uid to avoid chown failures */
+  if (privileged <= 0 && !(priv_flags & RESTORE_BIT))
+    * (uid_t *) eup = * (uid_t *) rup;
+
+  if (cygwin_debug) {
+    fprintf(stderr, "Starting uid %ld, gid %ld, ntsec %lu, privileged %d.\n",
+	    myuid, mygid, cygwin_internal(CW_CHECK_NTSEC, NULL), privileged);
+    fprintf(stderr, "root_uid %ld, exim_uid %ld, exim_gid %ld, config_uid %ld.\n",
+	    * (uid_t *) rup, * (uid_t *) eup, * (gid_t *) egp, * (uid_t *) cup);
+  }
+  return;
+}
+
+/*****************************************************************
+ *
+ Functions for average load measurements
+
+ Obtaining statistics in Windows is done at a low level by
+ calling registry functions, in particular the key
+ HKEY_PERFORMANCE_DATA on NT and successors.
+ Something equivalent exists on Win95, see Microsoft article
+ HOWTO: Access the Performance Registry Under Windows 95 (Q174631)
+ but it is not implemented here.
+
+ The list of objects to be polled is specified in the string
+ passed to RegQueryValueEx in ReadStat() below.
+ On NT, all objects are polled even if info about only one is
+ required. This is fixed in Windows 2000. See articles
+ INFO: Perflib Calling Close Procedure in Windows 2000 (Q270127)
+ INFO: Performance Data Changes Between Windows NT 4.0 and Windows
+ 2000 (Q296523)
+
+ It is unclear to me how the counters are primarily identified.
+ Whether it's by name strings or by the offset of their strings
+ as mapped in X:\Winnt\system32\perfc009.dat [or equivalently as
+ reported by the registry functions in GetNameStrings( ) below].
+ Microsoft documentation seems to say that both methods should
+ work.
+
+ In the interest of speed and language independence, the main
+ code below relies on offsets. However if debug is enabled, the
+ code verifies that the names of the corresponding strings are
+ as expected.
+
+*****************************************************************/
+#ifndef OS_LOAD_AVERAGE /* Can be set on command line */
+#define OS_LOAD_AVERAGE /* src/os.c need not provide it */
+
+/* Object and counter indices and names */
+#define PROCESSOR_OBJECT_INDEX 238
+#define PROCESSOR_OBJECT_STRING "238"
+#define PROCESSOR_OBJECT_NAME "Processor"
+#define PROCESSOR_TIME_COUNTER 6
+#define PROCESSOR_TIME_NAME "% Processor Time"
+
+/* Structure to compute the load average efficiently */
+static struct {
+  long long Time100ns;       /* Last measurement time */
+  long long IdleCount;       /* Latest cumulative idle time */
+  long long LastCounter;     /* Last measurement counter */
+  long long PerfFreq;        /* Perf counter frequency */
+  PPERF_DATA_BLOCK PerfData; /* Pointer to a buffer to get the data */
+  DWORD BufferSize;          /* Size of PerfData */
+  int LastLoad;              /* Last reported load, or -1 */
+  LPSTR * NamesArray;        /* Temporary (malloc) buffer for index */
+  BOOL Init;                 /* True if initialized */
+} cygwin_load = { 0, 0, 0, 0, NULL, 0, 0, NULL, FALSE};
+
+#define BYTEINCREMENT 800    /* Block to add to PerfData */
+
+/*****************************************************************
+ *
+ Macros to navigate through the performance data.
+
+ *****************************************************************/
+#define FirstObject(PerfData)\
+  ((PPERF_OBJECT_TYPE)((PBYTE)PerfData + PerfData->HeaderLength))
+#define NextObject(PerfObj)\
+  ((PPERF_OBJECT_TYPE)((PBYTE)PerfObj + PerfObj->TotalByteLength))
+#define ObjectCounterBlock(PerfObj)\
+  ((PPERF_COUNTER_BLOCK)(PBYTE)PerfObj + PerfObj->DefinitionLength )
+#define FirstInstance(PerfObj )\
+  ((PPERF_INSTANCE_DEFINITION)((PBYTE)PerfObj + PerfObj->DefinitionLength))
+#define InstanceCounterBlock(PerfInst)\
+  ((PPERF_COUNTER_BLOCK) ((PBYTE)PerfInst + PerfInst->ByteLength ))
+#define NextInstance(PerfInst )\
+  ((PPERF_INSTANCE_DEFINITION)((PBYTE)InstanceCounterBlock(PerfInst) + \
+        InstanceCounterBlock(PerfInst)->ByteLength) )
+#define FirstCounter(PerfObj)\
+  ((PPERF_COUNTER_DEFINITION) ((PBYTE)PerfObj + PerfObj->HeaderLength))
+#define NextCounter(PerfCntr)\
+  ((PPERF_COUNTER_DEFINITION)((PBYTE)PerfCntr + PerfCntr->ByteLength))
+
+/*****************************************************************
+ *
+ Load the counter and object names from the registry
+ to cygwin_load.NameStrings
+ and index them in cygwin_load.NamesArray
+
+ NameStrings seems to be taken from the file
+ X:\Winnt\system32\perfc009.dat
+
+ This is used only for name verification during initialization,
+ if DEBUG(D_load) is TRUE.
+
+*****************************************************************/
+static BOOL GetNameStrings( )
+{
+  HKEY hKeyPerflib;      // handle to registry key
+  DWORD dwArraySize;     // size for array
+  DWORD dwNamesSize;     // size for strings
+  LPSTR lpCurrentString; // pointer for enumerating data strings
+  DWORD dwCounter;       // current counter index
+  LONG  res;
+
+  /* Get the number of Counter items into dwArraySize. */
+  if ((res = RegOpenKeyEx( HKEY_LOCAL_MACHINE,
+			   "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Perflib",
+			   0,
+			   KEY_QUERY_VALUE, /* KEY_READ, */
+			   &hKeyPerflib))
+      != ERROR_SUCCESS) {
+    DEBUG(D_load) debug_printf("RegOpenKeyEx (1): error %ld (Windows)\n", res);
+    return FALSE;
+  }
+  dwNamesSize = sizeof(dwArraySize); /* Temporary reuse */
+  if ((res = RegQueryValueEx( hKeyPerflib,
+			      "Last Counter",
+			      NULL,
+			      NULL,
+			      (LPBYTE) &dwArraySize,
+			      &dwNamesSize ))
+      != ERROR_SUCCESS) {
+    DEBUG(D_load) debug_printf("RegQueryValueEx (1): error %ld (Windows)\n", res);
+    return FALSE;
+  }
+  RegCloseKey( hKeyPerflib );
+  /* Open the key containing the counter and object names. */
+  if ((res = RegOpenKeyEx( HKEY_LOCAL_MACHINE,
+			   "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Perflib\\009",
+			   0,
+			   KEY_READ,
+			   &hKeyPerflib))
+      != ERROR_SUCCESS) {
+    DEBUG(D_load) debug_printf("RegOpenKeyEx (2): error %ld (Windows)\n", res);
+    return FALSE;
+  }
+  /* Get the size of the Counter value in the key
+     and then read the value in the tail of NamesArray */
+  dwNamesSize = 0;
+  lpCurrentString = NULL;
+  while (1) {
+    res = RegQueryValueEx( hKeyPerflib,
+			   "Counter",
+			   NULL,
+			   NULL,
+			   (unsigned char *) lpCurrentString,
+			   &dwNamesSize);
+    if ((res == ERROR_SUCCESS) && /* Bug (NT 4.0): SUCCESS was returned on first call */
+	(cygwin_load.NamesArray != NULL)) break;
+    if ((res == ERROR_SUCCESS) || /* but cygwin_load.NamesArrays == NULL */
+        (res == ERROR_MORE_DATA)) {
+      /* Allocate memory BOTH for the names array and for the counter and object names */
+      if ((cygwin_load.NamesArray =
+	   (LPSTR *) malloc( (dwArraySize + 1) * sizeof(LPSTR) + dwNamesSize * sizeof(CHAR)))
+	  != NULL) {
+        /* Point to area for the counter and object names */
+	lpCurrentString = (LPSTR) & cygwin_load.NamesArray[dwArraySize + 1];
+        continue;
+      }
+      DEBUG(D_load) debug_printf("Malloc: errno %d (%s)\n", errno, strerror(errno));
+    }
+    else { /* Serious error */
+      DEBUG(D_load) debug_printf("RegQueryValueEx (2): error %ld (Windows)\n", res);
+    }
+    return FALSE;
+  }
+  RegCloseKey( hKeyPerflib );
+  /* Index the names into an array. */
+  while (*lpCurrentString) {
+    dwCounter = atol( lpCurrentString );
+    lpCurrentString += (lstrlen(lpCurrentString)+1);
+    cygwin_load.NamesArray[dwCounter] = lpCurrentString;
+    lpCurrentString += (strlen(lpCurrentString)+1);
+  }
+  return TRUE;
+}
+
+/*****************************************************************
+ *
+ Find the value of the Processor Time counter
+
+*****************************************************************/
+static BOOL ReadTimeCtr(PPERF_OBJECT_TYPE PerfObj,
+			PPERF_COUNTER_DEFINITION CurCntr,
+			PPERF_COUNTER_BLOCK PtrToCntr,
+			unsigned long long * TimePtr){
+  int j;
+  /* Scan all counters. */
+  for( j = 0; j < PerfObj->NumCounters; j++ ) {
+    if (CurCntr->CounterNameTitleIndex == PROCESSOR_TIME_COUNTER) {
+      /* Verify it is really the proc time counter */
+      if ((CurCntr->CounterType != PERF_100NSEC_TIMER_INV) || /* Wrong type */
+	  ((cygwin_load.NamesArray != NULL) &&		      /* Verify name */
+	   (strcmp(cygwin_load.NamesArray[CurCntr->CounterNameTitleIndex],
+		   PROCESSOR_TIME_NAME)))) {
+	log_write(0, LOG_MAIN|LOG_PANIC,
+                  "Incorrect Perf counter type or name %x %s",
+		  (unsigned) CurCntr->CounterType,
+		  cygwin_load.NamesArray[CurCntr->CounterNameTitleIndex]);
+	return FALSE;
+      }
+      *TimePtr += *(unsigned long long int *) ((PBYTE) PtrToCntr + CurCntr->CounterOffset);
+      return TRUE; /* return TRUE as soon as we found the counter */
+    }
+    /* Get the next counter. */
+    CurCntr = NextCounter( CurCntr );
+  }
+  return FALSE;
+}
+/*****************************************************************
+ *
+ ReadStat()
+ Measures current Time100ns and IdleCount
+ Return TRUE if success.
+
+ *****************************************************************/
+static BOOL ReadStat(long long int *Time100nsPtr,
+				     long long int * IdleCountPtr)
+{
+  PPERF_OBJECT_TYPE PerfObj;
+  PPERF_INSTANCE_DEFINITION PerfInst;
+  PPERF_COUNTER_DEFINITION PerfCntr;
+  PPERF_COUNTER_BLOCK PtrToCntr;
+  DWORD i, k, res;
+
+  /* Get the performance data for the Processor object
+     There is no need to open a key.
+     We may need to blindly increase the buffer size.
+     BufferSize does not return info but may be changed */
+  while (1) {
+    DWORD BufferSize = cygwin_load.BufferSize;
+    res = RegQueryValueEx( HKEY_PERFORMANCE_DATA,
+			   PROCESSOR_OBJECT_STRING,
+			   NULL,
+			   NULL,
+			   (LPBYTE) cygwin_load.PerfData,
+			   &BufferSize );
+    if (res == ERROR_SUCCESS) break;
+    if (res == ERROR_MORE_DATA ) {
+      /* Increment if necessary to get a buffer that is big enough. */
+      cygwin_load.BufferSize += BYTEINCREMENT;
+      if ((cygwin_load.PerfData =
+	   (PPERF_DATA_BLOCK) realloc( cygwin_load.PerfData, cygwin_load.BufferSize ))
+	  != NULL) continue;
+      DEBUG(D_load) debug_printf("Malloc: errno %d (%s)\n", errno, strerror(errno));
+    }
+    else { /* Serious error */
+      DEBUG(D_load) debug_printf("RegQueryValueEx (3): error %ld (Windows)\n", res);
+    }
+    return FALSE;
+  }
+  /* Initialize the counters */
+  *Time100nsPtr = 0;
+  *IdleCountPtr = 0;
+  /* We should only have one object, but write general code just in case. */
+  PerfObj = FirstObject( cygwin_load.PerfData );
+  for( i = 0; i < cygwin_load.PerfData->NumObjectTypes; i++ ) {
+    /* We are only interested in the processor object */
+    if ( PerfObj->ObjectNameTitleIndex == PROCESSOR_OBJECT_INDEX) {
+      /* Possibly verify it is really the Processor object. */
+      if ((cygwin_load.NamesArray != NULL) &&
+	  (strcmp(cygwin_load.NamesArray[PerfObj->ObjectNameTitleIndex],
+		  PROCESSOR_OBJECT_NAME))) {
+	log_write(0, LOG_MAIN|LOG_PANIC,
+		  "Incorrect Perf object name %s",
+		  cygwin_load.NamesArray[PerfObj->ObjectNameTitleIndex]);
+	return FALSE;
+      }
+      /* Get the first counter */
+      PerfCntr = FirstCounter( PerfObj );
+      /* See if the object has instances.
+	 It should, but write general code. */
+      if( PerfObj->NumInstances != PERF_NO_INSTANCES ) {
+	PerfInst = FirstInstance( PerfObj );
+	for( k = 0; k < PerfObj->NumInstances; k++ ) {
+	  /* There can be several processors.
+             Accumulate both the Time100ns and the idle counter.
+             On Win 2000 I have seen an instance named "_Total".
+	     Do not use it.	We only use instances with a single
+             character in the name.
+             If we examine the object names, we also look at the instance
+             names and their lengths and issue reports */
+	  if ( cygwin_load.NamesArray != NULL) {
+            CHAR ascii[30]; /* The name is in unicode */
+	    wsprintf(ascii,"%.29lS",
+		     (char *)((PBYTE)PerfInst + PerfInst->NameOffset));
+	    log_write(0, LOG_MAIN,
+                      "Perf: Found processor instance \"%s\", length %d",
+                      ascii, PerfInst->NameLength);
+	    if ((PerfInst->NameLength != 4) &&
+                (strcmp(ascii, "_Total") != 0)) {
+	      log_write(0, LOG_MAIN|LOG_PANIC,
+                        "Perf: WARNING: Unexpected processor instance name");
+	      return FALSE;
+            }
+          }
+	  if (PerfInst->NameLength == 4) {
+            *Time100nsPtr += cygwin_load.PerfData->PerfTime100nSec.QuadPart;
+	    PtrToCntr = InstanceCounterBlock(PerfInst);
+	    if (! ReadTimeCtr(PerfObj, PerfCntr, PtrToCntr, IdleCountPtr)) {
+	      return FALSE;
+	    }
+          }
+	  PerfInst = NextInstance( PerfInst );
+	}
+        return (*Time100nsPtr != 0); /* Something was read */
+      }
+      else { /* No instance, just the counter data */
+	*Time100nsPtr = cygwin_load.PerfData->PerfTime100nSec.QuadPart;
+	PtrToCntr = ObjectCounterBlock(PerfObj);
+	return ReadTimeCtr(PerfObj, PerfCntr, PtrToCntr, IdleCountPtr);
+      }
+    }
+    PerfObj = NextObject( PerfObj );
+  }
+  return FALSE; /* Did not find the Processor object */
+}
+
+/*****************************************************************
+ *
+ InitLoadAvg()
+ Initialize the cygwin_load structure.
+ and set cygwin_load.Flag to TRUE if successful.
+ This is called the first time os_getloadavg is called
+ *****************************************************************/
+static void InitLoadAvg()
+{
+  BOOL success = TRUE;
+  cygwin_load.Init = TRUE;        /* We have run */
+  /* Get perf frequency and counter */
+  QueryPerformanceFrequency((LARGE_INTEGER *)& cygwin_load.PerfFreq);
+  QueryPerformanceCounter((LARGE_INTEGER *)& cygwin_load.LastCounter);
+  DEBUG(D_load) {
+    /* Get the name strings through the registry
+       to verify that the object and counter numbers
+       have the names we expect */
+    success = GetNameStrings();
+  }
+  /* Get initial values for Time100ns and IdleCount
+     and possibly verify the names */
+  //  success = success &&
+  success = ReadStat( & cygwin_load.Time100ns,
+		      & cygwin_load.IdleCount);
+  /* If success, set the Load to 0, else to -1 */
+  if (success) cygwin_load.LastLoad = 0;
+  else {
+    log_write(0, LOG_MAIN, "Cannot obtain Load Average");
+    cygwin_load.LastLoad = -1;
+  }
+  /* Free the buffer created for debug name verification */
+  if (cygwin_load.NamesArray != NULL) {
+    free(cygwin_load.NamesArray);
+    cygwin_load.NamesArray = NULL;
+  }
+}
+/*****************************************************************
+ *
+ os_getloadavg()
+
+ Return -1 if not available;
+ Return the previous value if less than AVERAGING sec old.
+ else return the processor load on a [0 - 1000] scale.
+
+ The first time we are called we initialize the counts
+ and return 0 or -1.
+ The load cannot be measured because we use the processor 100%
+*****************************************************************/
+#define AVERAGING 10
+int os_getloadavg()
+{
+  long long Time100ns, IdleCount, CurrCounter;
+  int value;
+
+  if (! cygwin_load.Init) InitLoadAvg();
+  else if (cygwin_load.LastLoad >= 0) { /* Initialized OK */
+    /* Get the current time (PerfCounter) */
+    QueryPerformanceCounter((LARGE_INTEGER *)& CurrCounter);
+    /* Calls closer than AVERAGING sec apart use the previous value */
+    if (CurrCounter - cygwin_load.LastCounter >
+	AVERAGING * cygwin_load.PerfFreq) {
+      /* Get Time100ns and IdleCount */
+      if (ReadStat( & Time100ns, & IdleCount)) { /* Success */
+	/* Return processor load on 1000 scale */
+	value = 1000 - ((1000 * (IdleCount - cygwin_load.IdleCount)) /
+			(Time100ns - cygwin_load.Time100ns));
+	cygwin_load.Time100ns = Time100ns;
+	cygwin_load.IdleCount = IdleCount;
+	cygwin_load.LastCounter = CurrCounter;
+	cygwin_load.LastLoad = value;
+      }
+      else { /* Something bad happened.
+		Refuse to measure the load anymore
+		but don't bother releasing the buffer */
+        log_write(0, LOG_MAIN, "Cannot obtain Load Average");
+	cygwin_load.LastLoad = -1;
+      }
+    }
+  }
+  DEBUG(D_load)
+    debug_printf("Perf: load average = %d\n", cygwin_load.LastLoad);
+  return cygwin_load.LastLoad;
+}
+#endif /* OS_LOAD_AVERAGE */
+#endif /* COMPILE_UTILITY */
diff --git a/src/OS/os.h-AIX b/src/OS/os.h-AIX
new file mode 100644
index 000000000..29a2903a3
--- /dev/null
+++ b/src/OS/os.h-AIX
@@ -0,0 +1,25 @@
+/* $Cambridge: exim/src/OS/os.h-AIX,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for AIX */
+/* Written by Nick Waterman <nick@cimio.co.uk> */
+/* Modified by Philip Hazel with data from
+   Niels Provos <provos@wserver.physnet.uni-hamburg.de>
+   Juozas Simkevicius <juozas@omnitel.net> for load averages
+*/
+
+#define HAVE_DEV_KMEM
+#define LOAD_AVG_SYMBOL "avenrun"
+#define KERNEL_PATH     "/unix"
+#define LOAD_AVG_TYPE   int
+#define FSCALE          65536.0
+
+#define HAVE_SYS_VFS_H
+#define HAVE_SYS_STATFS_H
+
+/* Now tell AIX to emulate BSD as badly as it can. */
+
+#define _BSD 44
+
+typedef struct flock flock_t;
+
+/* End */
diff --git a/src/OS/os.h-BSDI b/src/OS/os.h-BSDI
new file mode 100644
index 000000000..09b646197
--- /dev/null
+++ b/src/OS/os.h-BSDI
@@ -0,0 +1,12 @@
+/* $Cambridge: exim/src/OS/os.h-BSDI,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for BSDI */
+
+#define HAVE_BSD_GETLOADAVG
+#define HAVE_MMAP
+#define HAVE_SYS_MOUNT_H
+#define SIOCGIFCONF_GIVES_ADDR
+
+typedef struct flock flock_t;
+
+/* End */
diff --git a/src/OS/os.h-DGUX b/src/OS/os.h-DGUX
new file mode 100644
index 000000000..4f9c6746f
--- /dev/null
+++ b/src/OS/os.h-DGUX
@@ -0,0 +1,27 @@
+/* $Cambridge: exim/src/OS/os.h-DGUX,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for DGUX */
+
+/* Written by Ken Bailey (K.Bailey@rbgkew.org.uk) Feb 1998 */
+/* on dgux R4.11MU04 generic AViiON mc88100                */
+/* Modified Dec 1998 by PH after message from Ken.         */
+
+#define HAVE_SYS_STATVFS_H
+#define F_FAVAIL                 f_favail
+
+#define NO_SYSEXITS              /* DGUX doesn't ship sysexits.h */
+#define NO_IP_VAR_H              /* DGUX has no netinet/ip_var.h */
+
+#define os_strsignal             dg_strsignal
+#define OS_STRSIGNAL
+
+#define HAVE_MMAP
+
+/* The definition of ipoptions in netinet/in.h (masquerading as ip_opts) used
+in smtp_in.c is for Intel DG _IX86_ABI only. You may be able to get this to
+work on Intel DG but it's certainly easier to skip it on M88k. This means we
+forego the detection of some source-routing based IP attacks. */
+
+#define NO_IP_OPTIONS
+
+/* End */
diff --git a/src/OS/os.h-Darwin b/src/OS/os.h-Darwin
new file mode 100644
index 000000000..3a716376d
--- /dev/null
+++ b/src/OS/os.h-Darwin
@@ -0,0 +1,29 @@
+/* $Cambridge: exim/src/OS/os.h-Darwin,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for Darwin (Mac OS X) */
+
+/* #define CRYPT_H */  /* Apparently this isn't needed */
+
+#define HAVE_MMAP
+#define HAVE_SYS_MOUNT_H
+#define PAM_H_IN_PAM
+#define SIOCGIFCONF_GIVES_ADDR
+
+#define F_FREESP     O_TRUNC
+typedef struct flock flock_t;
+
+#define BASE_62 36  /* HFS+ aliases lower and upper cases in filenames.
+                               Consider reducing MAX_LOCALHOST_NUMBER */
+
+#ifndef        _BSD_SOCKLEN_T_
+#define _BSD_SOCKLEN_T_ int32_t                 /* socklen_t (duh) */
+#endif
+
+/* Settings for handling IP options. There's no netinet/ip_var.h. The IP
+option handling is in the style of the later GLIBCs but the GLIBC macros
+aren't set, so we invent a new one. */
+
+#define NO_IP_VAR_H
+#define DARWIN_IP_OPTIONS
+
+/* End */
diff --git a/src/OS/os.h-FreeBSD b/src/OS/os.h-FreeBSD
new file mode 100644
index 000000000..9a2da7a5a
--- /dev/null
+++ b/src/OS/os.h-FreeBSD
@@ -0,0 +1,12 @@
+/* $Cambridge: exim/src/OS/os.h-FreeBSD,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for FreeBSD */
+
+#define HAVE_BSD_GETLOADAVG
+#define HAVE_MMAP
+#define HAVE_SYS_MOUNT_H
+#define SIOCGIFCONF_GIVES_ADDR
+
+typedef struct flock flock_t;
+
+/* End */
diff --git a/src/OS/os.h-GNU b/src/OS/os.h-GNU
new file mode 100644
index 000000000..6d44d5a2d
--- /dev/null
+++ b/src/OS/os.h-GNU
@@ -0,0 +1,20 @@
+/* $Cambridge: exim/src/OS/os.h-GNU,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for GNU/Hurd */
+
+#define CRYPT_H
+#define HAVE_MMAP
+#define HAVE_SYS_VFS_H
+#define NO_IP_VAR_H
+#define NO_NET_IF_H
+#define NO_FIND_INTERFACES
+#define SETRLIMIT_NOT_SUPPORTED
+#define GLIBC_IP_OPTIONS
+
+#define F_FREESP     O_TRUNC
+typedef struct flock flock_t;
+
+#define os_strsignal strsignal
+#define OS_STRSIGNAL
+
+/* End */
diff --git a/src/OS/os.h-HI-OSF b/src/OS/os.h-HI-OSF
new file mode 100644
index 000000000..82c077d69
--- /dev/null
+++ b/src/OS/os.h-HI-OSF
@@ -0,0 +1,11 @@
+/* $Cambridge: exim/src/OS/os.h-HI-OSF,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for HI-OSF/1-MJ and HI-UX/MPP */
+
+#define HAVE_SYS_MOUNT_H
+
+typedef struct flock           flock_t;
+#define F_FREESP               O_TRUNC
+#define DN_EXPAND_ARG4_TYPE    u_char *
+
+/* End */
diff --git a/src/OS/os.h-HI-UX b/src/OS/os.h-HI-UX
new file mode 100644
index 000000000..e6f5fdf61
--- /dev/null
+++ b/src/OS/os.h-HI-UX
@@ -0,0 +1,20 @@
+/* $Cambridge: exim/src/OS/os.h-HI-UX,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for HI-UX */
+
+#define LOAD_AVG_NEEDS_ROOT
+#define HAVE_DEV_KMEM
+#define LOAD_AVG_TYPE       double
+#define LOAD_AVG_SYMBOL     "avenrun"
+#define KERNEL_PATH         "/HI-UX"
+#define FSCALE              1.0
+
+#define HAVE_SYS_VFS_H
+
+#define SELECT_ARG2_TYPE    int
+#define F_FREESP            O_TRUNC
+#define NEED_H_ERRNO        1
+
+typedef struct flock flock_t;
+
+/* End */
diff --git a/src/OS/os.h-HP-UX b/src/OS/os.h-HP-UX
new file mode 100644
index 000000000..fda838de4
--- /dev/null
+++ b/src/OS/os.h-HP-UX
@@ -0,0 +1,19 @@
+/* $Cambridge: exim/src/OS/os.h-HP-UX,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for HP-UX versions greater than 9 */
+
+#define LOAD_AVG_NEEDS_ROOT
+#define HAVE_DEV_KMEM
+#define LOAD_AVG_TYPE   double
+#define LOAD_AVG_SYMBOL "avenrun"
+#define KERNEL_PATH     "/hp-ux"
+#define FSCALE          1.0
+
+#define HAVE_SYS_STATVFS_H
+
+#define F_FREESP           O_TRUNC
+#define NEED_H_ERRNO       1
+
+typedef struct flock flock_t;
+
+/* End */
diff --git a/src/OS/os.h-HP-UX-9 b/src/OS/os.h-HP-UX-9
new file mode 100644
index 000000000..c7e3604c3
--- /dev/null
+++ b/src/OS/os.h-HP-UX-9
@@ -0,0 +1,22 @@
+/* $Cambridge: exim/src/OS/os.h-HP-UX-9,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for HP-UX version 9 */
+
+#define LOAD_AVG_NEEDS_ROOT
+#define HAVE_DEV_KMEM
+#define LOAD_AVG_TYPE   double
+#define LOAD_AVG_SYMBOL "avenrun"
+#define KERNEL_PATH     "/hp-ux"
+#define FSCALE          1.0
+
+#define HAVE_SYS_VFS_H
+
+#define SELECT_ARG2_TYPE   int
+#define F_FREESP           O_TRUNC
+#define NEED_H_ERRNO       1
+
+#define killpg(pgid,sig)   kill(-(pgid),sig)
+
+typedef struct flock flock_t;
+
+/* End */
diff --git a/src/OS/os.h-IRIX b/src/OS/os.h-IRIX
new file mode 100644
index 000000000..934fa315d
--- /dev/null
+++ b/src/OS/os.h-IRIX
@@ -0,0 +1,22 @@
+/* $Cambridge: exim/src/OS/os.h-IRIX,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for IRIX */
+
+#define DN_EXPAND_ARG4_TYPE  u_char *
+
+#define LOAD_AVG_NEEDS_ROOT
+#define HAVE_DEV_KMEM
+#define LOAD_AVG_TYPE   long
+#define LOAD_AVG_SYMBOL "avenrun"
+#define KERNEL_PATH     "/unix"
+#define FSCALE          1000.0
+
+#define HAVE_MMAP
+#define HAVE_SYS_STATVFS_H
+#define F_FAVAIL        f_favail
+#define vfork fork
+
+/* Other OS have "const" in here */
+#define ICONV_ARG2_TYPE char **
+
+/* End */
diff --git a/src/OS/os.h-IRIX6 b/src/OS/os.h-IRIX6
new file mode 100644
index 000000000..b2d6306a4
--- /dev/null
+++ b/src/OS/os.h-IRIX6
@@ -0,0 +1,21 @@
+/* $Cambridge: exim/src/OS/os.h-IRIX6,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for IRIX */
+
+#define CRYPT_H
+#define LOAD_AVG_NEEDS_ROOT
+#define HAVE_DEV_KMEM
+#define LOAD_AVG_TYPE   long
+#define LOAD_AVG_SYMBOL "avenrun"
+#define KERNEL_PATH     "/unix"
+#define FSCALE          1000.0
+
+#define HAVE_MMAP
+#define HAVE_SYS_STATVFS_H
+#define F_FAVAIL        f_favail
+#define vfork fork
+
+/* Other OS have "const" in here */
+#define ICONV_ARG2_TYPE char **
+
+/* End */
diff --git a/src/OS/os.h-IRIX632 b/src/OS/os.h-IRIX632
new file mode 100644
index 000000000..f4d368482
--- /dev/null
+++ b/src/OS/os.h-IRIX632
@@ -0,0 +1,23 @@
+/* $Cambridge: exim/src/OS/os.h-IRIX632,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for IRIX */
+
+#define CRYPT_H
+#define DN_EXPAND_ARG4_TYPE  u_char *
+
+#define LOAD_AVG_NEEDS_ROOT
+#define HAVE_DEV_KMEM
+#define LOAD_AVG_TYPE   long
+#define LOAD_AVG_SYMBOL "avenrun"
+#define KERNEL_PATH     "/unix"
+#define FSCALE          1000.0
+
+#define HAVE_MMAP
+#define HAVE_SYS_STATVFS_H
+#define F_FAVAIL        f_favail
+#define vfork fork
+
+/* Other OS have "const" in here */
+#define ICONV_ARG2_TYPE char **
+
+/* End */
diff --git a/src/OS/os.h-IRIX65 b/src/OS/os.h-IRIX65
new file mode 100644
index 000000000..6c08fd2d0
--- /dev/null
+++ b/src/OS/os.h-IRIX65
@@ -0,0 +1,21 @@
+/* $Cambridge: exim/src/OS/os.h-IRIX65,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for IRIX 6.5 */
+
+#define CRYPT_H
+#define LOAD_AVG_NEEDS_ROOT
+#define HAVE_DEV_KMEM
+#define LOAD_AVG_TYPE   long
+#define LOAD_AVG_SYMBOL "avenrun"
+#define KERNEL_PATH     "/unix"
+#define FSCALE          1000.0
+
+#define HAVE_MMAP
+#define HAVE_SYS_STATVFS_H
+#define F_FAVAIL        f_favail
+#define vfork fork
+
+/* Other OS have "const" in here */
+#define ICONV_ARG2_TYPE char **
+
+/* End */
diff --git a/src/OS/os.h-Linux b/src/OS/os.h-Linux
new file mode 100644
index 000000000..f89ea7adb
--- /dev/null
+++ b/src/OS/os.h-Linux
@@ -0,0 +1,39 @@
+/* $Cambridge: exim/src/OS/os.h-Linux,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for Linux */
+
+#define CRYPT_H
+#define GLIBC_IP_OPTIONS
+#define HAVE_MMAP
+#define HAVE_SYS_VFS_H
+#define NO_IP_VAR_H
+#define SIOCGIFCONF_GIVES_ADDR
+#define SIG_IGN_WORKS
+
+/* Some versions of Linux need explicit sync-ing of directories as well as
+files. This setting requests that. If the directory is on NFS, it may not
+be possible to sync it - in that case, Exim now should ignore the error. But
+if you have problems in that area, try undefining this. But be aware that you
+may be in a situation where files are not being properly "committed to stable
+storage" as quickly as Exim thinks they are. */
+
+#define NEED_SYNC_DIRECTORY
+
+/* Other OS have "const" in here */
+#define ICONV_ARG2_TYPE char **
+
+#define F_FREESP     O_TRUNC
+typedef struct flock flock_t;
+
+#define os_strsignal strsignal
+#define OS_STRSIGNAL
+
+#define os_find_running_interfaces os_find_running_interfaces_linux
+
+/* Need a prototype for the Linux-specific function. The structure hasn't
+been defined yet, so we need to pre-declare it. */
+
+struct ip_address_item;
+extern struct ip_address_item *os_find_running_interfaces_linux(void);
+
+/* End */
diff --git a/src/OS/os.h-Linux-libc5 b/src/OS/os.h-Linux-libc5
new file mode 100644
index 000000000..56bbd50d1
--- /dev/null
+++ b/src/OS/os.h-Linux-libc5
@@ -0,0 +1,13 @@
+/* $Cambridge: exim/src/OS/os.h-Linux-libc5,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for Linux */
+
+#define HAVE_MMAP
+#define HAVE_SYS_VFS_H
+#define NO_IP_VAR_H
+#define GLIBC_IP_OPTIONS
+
+#define F_FREESP     O_TRUNC
+typedef struct flock flock_t;
+
+/* End */
diff --git a/src/OS/os.h-NetBSD b/src/OS/os.h-NetBSD
new file mode 100644
index 000000000..e07186bf3
--- /dev/null
+++ b/src/OS/os.h-NetBSD
@@ -0,0 +1,15 @@
+/* $Cambridge: exim/src/OS/os.h-NetBSD,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for NetBSD */
+
+#define HAVE_BSD_GETLOADAVG
+#define HAVE_MMAP
+#define HAVE_SYS_MOUNT_H
+#define SIOCGIFCONF_GIVES_ADDR
+
+typedef struct flock flock_t;
+
+#define os_strsignal strsignal
+#define OS_STRSIGNAL
+
+/* End */
diff --git a/src/OS/os.h-NetBSD-a.out b/src/OS/os.h-NetBSD-a.out
new file mode 100644
index 000000000..0c59d601c
--- /dev/null
+++ b/src/OS/os.h-NetBSD-a.out
@@ -0,0 +1,7 @@
+/* $Cambridge: exim/src/OS/os.h-NetBSD-a.out,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for NetBSD (a.out binary format) */
+
+#include "../OS/os.h-NetBSD"     /* Same as for ELF format */
+
+/* End */
diff --git a/src/OS/os.h-OSF1 b/src/OS/os.h-OSF1
new file mode 100644
index 000000000..1aa4ff95d
--- /dev/null
+++ b/src/OS/os.h-OSF1
@@ -0,0 +1,13 @@
+/* $Cambridge: exim/src/OS/os.h-OSF1,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for OSF1 */
+
+#define HAVE_SYS_MOUNT_H
+#define HAVE_GETIPNODEBYNAME    1
+
+typedef struct flock flock_t;
+#define F_FREESP     O_TRUNC
+
+#define SOCKLEN_T    size_t
+
+/* End */
diff --git a/src/OS/os.h-OpenBSD b/src/OS/os.h-OpenBSD
new file mode 100644
index 000000000..60eceb285
--- /dev/null
+++ b/src/OS/os.h-OpenBSD
@@ -0,0 +1,15 @@
+/* $Cambridge: exim/src/OS/os.h-OpenBSD,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for OpenBSD */
+
+#define HAVE_BSD_GETLOADAVG
+#define HAVE_MMAP
+#define HAVE_SYS_MOUNT_H
+#define SIOCGIFCONF_GIVES_ADDR
+
+typedef struct flock flock_t;
+
+#define os_strsignal strsignal
+#define OS_STRSIGNAL
+
+/* End */
diff --git a/src/OS/os.h-OpenUNIX b/src/OS/os.h-OpenUNIX
new file mode 100644
index 000000000..30d10f9bf
--- /dev/null
+++ b/src/OS/os.h-OpenUNIX
@@ -0,0 +1,18 @@
+/* $Cambridge: exim/src/OS/os.h-OpenUNIX,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for OpenUNIX */
+
+#define NO_SYSEXITS
+
+#define LOAD_AVG_NEEDS_ROOT
+#define HAVE_DEV_KMEM
+#define LOAD_AVG_TYPE   short
+#define LOAD_AVG_SYMBOL "avenrun"
+#define KERNEL_PATH     "/stand/unix"
+#define FSCALE          256
+
+#define HAVE_SYS_STATVFS_H
+#define _SVID3
+#define NEED_H_ERRNO
+
+/* End */
diff --git a/src/OS/os.h-QNX b/src/OS/os.h-QNX
new file mode 100644
index 000000000..96611880e
--- /dev/null
+++ b/src/OS/os.h-QNX
@@ -0,0 +1,23 @@
+/* $Cambridge: exim/src/OS/os.h-QNX,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for QNX */
+/* Modified for QNX 6.2.0 with diffs from Samuli Tuomola. */
+
+#include <sys/select.h>
+
+/* This include is wrapped in an ifdef so as to be skipped for QNXRTP, which
+doesn't have/need this header file. From Karsten P. Hoffmann. */
+
+#ifdef __QNX__
+#include <unix.h>
+#endif
+
+#undef HAVE_STATFS
+#undef HAVE_VFS_H
+#undef HAVE_SYS_MOUNT_H
+
+#define NO_SYSEXITS
+
+extern int h_errno;
+
+/* End */
diff --git a/src/OS/os.h-SCO b/src/OS/os.h-SCO
new file mode 100644
index 000000000..1b7eb06e3
--- /dev/null
+++ b/src/OS/os.h-SCO
@@ -0,0 +1,20 @@
+/* $Cambridge: exim/src/OS/os.h-SCO,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for SCO */
+
+#define DN_EXPAND_ARG4_TYPE    u_char *
+
+#define LOAD_AVG_NEEDS_ROOT
+#define HAVE_DEV_KMEM
+#define LOAD_AVG_TYPE   short
+#define LOAD_AVG_SYMBOL "avenrun"
+#define KERNEL_PATH     "/unix"
+#define FSCALE          256
+#define SOCKLEN_T       int
+
+#define HAVE_SYS_STATVFS_H
+#define F_FAVAIL        f_favail
+#define _SVID3
+#define NEED_H_ERRNO
+
+/* End */
diff --git a/src/OS/os.h-SCO_SV b/src/OS/os.h-SCO_SV
new file mode 100644
index 000000000..76dc4020f
--- /dev/null
+++ b/src/OS/os.h-SCO_SV
@@ -0,0 +1,18 @@
+/* $Cambridge: exim/src/OS/os.h-SCO_SV,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for SCO_SV */
+
+#define LOAD_AVG_NEEDS_ROOT
+#define HAVE_DEV_KMEM
+#define LOAD_AVG_TYPE   short
+#define LOAD_AVG_SYMBOL "avenrun"
+#define KERNEL_PATH     "/unix"
+#define FSCALE          256
+#define SOCKLEN_T       int
+
+#define HAVE_SYS_STATVFS_H
+#define F_FAVAIL        f_favail
+#define _SVID3
+#define NEED_H_ERRNO
+
+/* End */
diff --git a/src/OS/os.h-SunOS4 b/src/OS/os.h-SunOS4
new file mode 100644
index 000000000..cdb633ccc
--- /dev/null
+++ b/src/OS/os.h-SunOS4
@@ -0,0 +1,38 @@
+/* $Cambridge: exim/src/OS/os.h-SunOS4,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for SunOS4 */
+
+#define LOAD_AVG_NEEDS_ROOT
+#define HAVE_DEV_KMEM
+#define LOAD_AVG_TYPE   long
+#define LOAD_AVG_SYMBOL "_avenrun"
+#define KERNEL_PATH     "/vmunix"
+
+#define HAVE_MMAP
+#define HAVE_SYS_VFS_H
+
+#define F_FREESP     O_TRUNC
+#define EXIT_FAILURE 1
+#define EXIT_SUCCESS 0
+typedef struct flock flock_t;
+
+#define STRERROR_FROM_ERRLIST
+#define memmove(a, b, c) bcopy(b, a, c)
+#define strtoul(str, ptr, base) ((unsigned int)strtol((str),(ptr),(base)))
+
+extern char *strerror(int);
+extern int   sys_nerr;
+extern char *sys_errlist[];
+
+/* In ANSI C strtod() is defined in stdlib.h, but in SunOS4 it is defined in
+floatingpoint.h which is called from math.h, which Exim doesn't include. */
+
+extern double strtod(const char *, char **);
+
+/* SunOS4 seems to define getc, ungetc, feof and ferror as macros only, not
+as functions. We need to have them as assignable functions. Setting this
+flag causes this to get done in exim.h. */
+
+#define FUDGE_GETC_AND_FRIENDS
+
+/* End */
diff --git a/src/OS/os.h-SunOS5 b/src/OS/os.h-SunOS5
new file mode 100644
index 000000000..d0ffd57fd
--- /dev/null
+++ b/src/OS/os.h-SunOS5
@@ -0,0 +1,33 @@
+/* $Cambridge: exim/src/OS/os.h-SunOS5,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for SunOS5 aka Solaris */
+
+#define CRYPT_H
+#define HAVE_MMAP
+#define HAVE_SYS_STATVFS_H
+#define F_FAVAIL                f_favail
+#define SIOCGIFCONF_GIVES_ADDR
+
+#define HAVE_GETIPNODEBYNAME    1
+#define HAVE_GETIPNODEBYADDR    1
+
+#define HAVE_KSTAT
+#define LOAD_AVG_KSTAT         "system_misc"
+#define LOAD_AVG_KSTAT_MODULE  "unix"
+#define LOAD_AVG_SYMBOL        "avenrun_1min"
+#define LOAD_AVG_FIELD          value.ui32
+
+#define os_strsignal            strsignal
+#define OS_STRSIGNAL
+
+/* This is needed for some early Solaris releases, but causes trouble
+in the current ones, so it is out by default. */
+
+/* #define SOCKLEN_T               size_t */
+
+/* This is different from Linux and all other PAM implementations,
+it seems. */
+
+#define PAM_CONVERSE_ARG2_TYPE  struct pam_message
+
+/* End */
diff --git a/src/OS/os.h-SunOS5-hal b/src/OS/os.h-SunOS5-hal
new file mode 100644
index 000000000..9ba6d8a3c
--- /dev/null
+++ b/src/OS/os.h-SunOS5-hal
@@ -0,0 +1,13 @@
+/* $Cambridge: exim/src/OS/os.h-SunOS5-hal,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for SunOS5 on HAL */
+
+#define HAVE_MMAP
+
+#define HAVE_KSTAT
+#define LOAD_AVG_KSTAT        "system_misc"
+#define LOAD_AVG_KSTAT_MODULE "unix"
+#define LOAD_AVG_SYMBOL       "avenrun_1min"
+#define LOAD_AVG_FIELD         value.ul
+
+/* End */
diff --git a/src/OS/os.h-ULTRIX b/src/OS/os.h-ULTRIX
new file mode 100644
index 000000000..5b3fde1ad
--- /dev/null
+++ b/src/OS/os.h-ULTRIX
@@ -0,0 +1,17 @@
+/* $Cambridge: exim/src/OS/os.h-ULTRIX,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for Ultrix */
+
+/* Well, it *does* have statfs(), but its structure is called something
+different, all the members have different names, and the function returns
+1 on success rather than 0. As this is for a minority function, and I think
+a minority operating system, easiest just to say "no" until someone asks. */
+
+#undef HAVE_STATFS
+
+#define F_FREESP     O_TRUNC
+#define NEED_H_ERRNO
+#define NO_OPENLOG
+typedef struct flock flock_t;
+
+/* End */
diff --git a/src/OS/os.h-UNIX_SV b/src/OS/os.h-UNIX_SV
new file mode 100644
index 000000000..4beedbcc8
--- /dev/null
+++ b/src/OS/os.h-UNIX_SV
@@ -0,0 +1,24 @@
+/* $Cambridge: exim/src/OS/os.h-UNIX_SV,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for SCO SVR4.2 (and maybe Unixware) */
+
+/**
+*** Note that for SCO 5 the configuration file is called SCO_SV,
+*** and that Unixware7 has its own configuration. This is an old
+*** file that is retained for compatibility.
+**/
+
+#define NO_SYSEXITS
+
+#define LOAD_AVG_NEEDS_ROOT
+#define HAVE_DEV_KMEM
+#define LOAD_AVG_TYPE   short
+#define LOAD_AVG_SYMBOL "avenrun"
+#define KERNEL_PATH     "/stand/unix"
+#define FSCALE          256
+
+#define HAVE_SYS_STATVFS_H
+#define _SVID3
+#define NEED_H_ERRNO
+
+/* End */
diff --git a/src/OS/os.h-USG b/src/OS/os.h-USG
new file mode 100644
index 000000000..5bf995139
--- /dev/null
+++ b/src/OS/os.h-USG
@@ -0,0 +1,18 @@
+/* $Cambridge: exim/src/OS/os.h-USG,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for Unixware 2.x */
+
+#define NO_SYSEXITS
+
+#define LOAD_AVG_NEEDS_ROOT
+#define HAVE_DEV_KMEM
+#define LOAD_AVG_TYPE   short
+#define LOAD_AVG_SYMBOL "avenrun"
+#define KERNEL_PATH     "/stand/unix"
+#define FSCALE          256
+
+#define HAVE_SYS_STATVFS_H
+#define _SVID3
+#define NEED_H_ERRNO
+
+/* End */
diff --git a/src/OS/os.h-Unixware7 b/src/OS/os.h-Unixware7
new file mode 100644
index 000000000..618bac677
--- /dev/null
+++ b/src/OS/os.h-Unixware7
@@ -0,0 +1,21 @@
+/* $Cambridge: exim/src/OS/os.h-Unixware7,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for Unixware 7 */
+
+#define NO_SYSEXITS
+
+#define ICONV_ARG2_TYPE char **
+#define SOCKLEN_T size_t
+
+#define LOAD_AVG_NEEDS_ROOT
+#define HAVE_DEV_KMEM
+#define LOAD_AVG_TYPE   short
+#define LOAD_AVG_SYMBOL "avenrun"
+#define KERNEL_PATH     "/stand/unix"
+#define FSCALE          256
+
+#define HAVE_SYS_STATVFS_H
+#define _SVID3
+#define NEED_H_ERRNO
+
+/* End */
diff --git a/src/OS/os.h-cygwin b/src/OS/os.h-cygwin
new file mode 100644
index 000000000..ebd9c848b
--- /dev/null
+++ b/src/OS/os.h-cygwin
@@ -0,0 +1,53 @@
+/* $Cambridge: exim/src/OS/os.h-cygwin,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for Cygwin */
+
+/* This code was supplied by Pierre A. Humblet <Pierre.Humblet@ieee.org> */
+
+/* Define the OS_INIT macro that we insert in exim.c:main()
+   to set the root and exim uid depending on the system */
+/* We use a special routine to initialize */
+void cygwin_init(int, char **, void *, void *, void *, void *);
+#define OS_INIT\
+  cygwin_init(argc, (char **) argv, &root_uid, &exim_uid, &exim_gid, &config_uid);
+
+/* We need a special mkdir that
+   allows names starting with // */
+#include <sys/stat.h> /* Do not redefine mkdir in sys/stat.h */
+int cygwin_mkdir( const char *_path, mode_t __mode );
+#define mkdir cygwin_mkdir /* redefine mkdir elsewhere */
+
+/* Redefine the set*id calls to run when faking root */
+#include <unistd.h>   /* Do not redefine in unitsd.h */
+int cygwin_setuid(uid_t uid );
+int cygwin_setgid(gid_t gid );
+#define setuid cygwin_setuid
+#define setgid cygwin_setgid
+
+extern unsigned int cygwin_WinVersion;
+
+#define BASE_62 36  /* Windows aliases lower and upper cases in filenames.
+		       Consider reducing MAX_LOCALHOST_NUMBER */
+#define CRYPT_H
+#define HAVE_MMAP
+#define HAVE_SYS_VFS_H
+#define NO_IP_VAR_H
+#define NO_IP_OPTIONS
+#define F_FREESP     O_TRUNC
+/* Defining LOAD_AVG_NEEDS_ROOT causes an initial
+   call to os_getloadavg. In our case this is beneficial
+   because it initializes the counts */
+#define LOAD_AVG_NEEDS_ROOT
+
+typedef struct flock flock_t;
+
+/* Macro to define variable length SID structures */
+#define SID(n, name, sid...) \
+struct  { \
+  BYTE  Revision; \
+  BYTE  SubAuthorityCount; \
+  SID_IDENTIFIER_AUTHORITY IdentifierAuthority; \
+  DWORD SubAuthority[n]; \
+} name = { SID_REVISION, n, {SECURITY_NT_AUTHORITY}, {sid}}
+
+/* End */
diff --git a/src/OS/os.h-mips b/src/OS/os.h-mips
new file mode 100644
index 000000000..74abf5f2c
--- /dev/null
+++ b/src/OS/os.h-mips
@@ -0,0 +1,26 @@
+/* $Cambridge: exim/src/OS/os.h-mips,v 1.1 2004/10/06 15:07:39 ph10 Exp $ */
+
+/* Exim: OS-specific C header file for RiscOS4bsd */
+
+#define LOAD_AVG_NEEDS_ROOT
+#define HAVE_DEV_KMEM
+#define LOAD_AVG_TYPE   long
+#define LOAD_AVG_SYMBOL "_avenrun"
+#define KERNEL_PATH     "/unix"
+
+#define HAVE_MMAP
+#define HAVE_SYS_VFS_H
+
+#define F_FREESP     O_TRUNC
+#define EXIT_FAILURE 1
+#define EXIT_SUCCESS 0
+typedef struct flock flock_t;
+
+#define STRERROR_FROM_ERRLIST
+#define memmove(a, b, c) bcopy(b, a, c)
+
+extern char *strerror(int);
+extern int   sys_nerr;
+extern char *sys_errlist[];
+
+/* End */
diff --git a/src/scripts/Configure b/src/scripts/Configure
new file mode 100755
index 000000000..ac82c3b52
--- /dev/null
+++ b/src/scripts/Configure
@@ -0,0 +1,11 @@
+#! /bin/sh
+# $Cambridge: exim/src/scripts/Configure,v 1.1 2004/10/06 15:07:40 ph10 Exp $
+
+# A script to be called to run all the other configuring scripts manually.
+
+scripts/Configure-Makefile
+scripts/Configure-os.h
+scripts/Configure-os.c
+scripts/Configure-config.h
+
+# End of Configure
diff --git a/src/scripts/Configure-Makefile b/src/scripts/Configure-Makefile
new file mode 100755
index 000000000..9db965095
--- /dev/null
+++ b/src/scripts/Configure-Makefile
@@ -0,0 +1,170 @@
+#! /bin/sh
+# $Cambridge: exim/src/scripts/Configure-Makefile,v 1.1 2004/10/06 15:07:40 ph10 Exp $
+
+# Shell script to build Makefile in a build directory. It must be called
+# from inside the directory. It does its own checking of when to rebuild; it
+# just got too horrendous to get it right in "make", because of the optionally
+# existing configuration files.
+
+
+# First off, get the OS type, and check that there is a make file for it.
+
+ostype=`../scripts/os-type -generic` || exit 1
+
+if [ ! -r ../OS/Makefile-$ostype ] ; then
+  echo ""
+  echo "*** Sorry - operating system $ostype is not supported"
+  echo "*** See OS/Makefile-* for supported systems" 1>&2
+  echo ""
+  exit 1
+fi
+
+# We also need the architecture type, in order to test for any architecture-
+# specific configuration files.
+
+archtype=`../scripts/arch-type` || exit 1
+
+# Now test for either the non-existence of Makefile, or for any of its
+# components being newer. Note that the "newer" script gives the right
+# answer (for our purposes) when the first file is non-existent.
+
+editme=../Local/Makefile
+rebuild=yes
+
+if [ -f Makefile ] ; then
+  rebuild=no
+  if ../scripts/newer $editme Makefile || \
+     ../scripts/newer $editme-$ostype Makefile || \
+     ../scripts/newer $editme-$archtype Makefile || \
+     ../scripts/newer $editme-$ostype-$archtype Makefile || \
+     ../scripts/newer ../scripts/Configure-Makefile Makefile || \
+     ../scripts/newer ../OS/Makefile-Base Makefile || \
+     ../scripts/newer ../OS/Makefile-Default Makefile
+  then
+    rebuild=yes
+  fi
+fi
+
+# If the "build" variable is set it means that a build name was explicitly
+# given. Arrange to pick up a build-specific configuration file.
+
+if [ "X$build" != "X" ] ; then
+  mfb=Local/Makefile-$build
+  if ../scripts/newer $editme-$build Makefile ; then
+    rebuild=yes
+  fi
+else
+  mfb=
+fi
+
+
+# If Makefile is up-to-date, no need to rebuild it.
+
+if [ $rebuild = no ] ; then
+  echo "\`Makefile' is up to date."
+  echo " "
+  exit
+fi
+
+# Makefile needs to be rebuilt in the current directory by joining
+# the generic default makefile, the OS base makefile, and then local
+# generic, OS-specific, architecture-specific, and OS+architecture-specific
+# makefiles, if they exist. These files all contain macro definitions, with
+# later definitions overriding earlier ones. Make a temporary file first, in
+# case things go wrong. A second temporary is needed for sorting out the
+# default Perl stuff. Use short macro names to save typing.
+
+mf=Makefile
+mft=$mf-t
+mftt=$mf-tt
+
+# Ensure the temporary does not exist and start the new one by setting
+# the OSTYPE and ARCHTYPE variables.
+
+rm -f $mft $mftt
+(echo "OSTYPE=$ostype"; echo "ARCHTYPE=$archtype"; echo "") > $mft || exit 1
+
+# Now concatenate the files to the temporary file. Copy the files using sed to
+# remove comments, blank lines, and trailing white space.
+
+# BEWARE: a tab character is needed in the sed command below. It has had
+# a nasty tendency to get lost in the past, causing a problem if a tab has
+# actually been present in one of the files. Use a variable to hold a space
+# and a tab to keep the tab in one place.
+
+st='	 '
+
+for f in OS/Makefile-Default \
+         OS/Makefile-$ostype \
+         Local/Makefile \
+         Local/Makefile-$ostype \
+         Local/Makefile-$archtype \
+         Local/Makefile-$ostype-$archtype \
+         $mfb
+do   if test -r ../$f
+     then   echo "# From $f"
+            sed "/^#/d;/^[$st]*\$/d;s/[$st]*\$//" ../$f || exit 1
+            echo "# End of $f"
+            echo ""
+     fi
+done >> $mft || exit 1
+
+# See if there is a definition of EXIM_PERL in what we have built so far.
+# If so, run Perl to find the default values for PERL_CC, PERL_CCOPTS,
+# and PERL_LIBS. These need to be put at the top of the Makefile, so we rename
+# what we have so far and then copy it afterwards. Use the value of PERL_COMMAND
+# if it has been defined.
+
+EXIM_PERL=`grep EXIM_PERL $mft`
+
+PERL_COMMAND=`grep PERL_COMMAND $mft | sed -e "\\$!d;s/^[$st]*PERL_COMMAND[$st]*=[$st]*//"`
+if [ "${PERL_COMMAND}" = "" ] ; then
+  PERL_COMMAND='perl'
+fi
+
+if [ "${EXIM_PERL}" != "" ] ; then
+  testperl=`$PERL_COMMAND --version`
+  if [ "$testperl" = "" ] ; then
+    echo "*** EXIM_PERL is set, but '$PERL_COMMAND --version' failed"
+    exit 1
+  fi
+
+  mv $mft $mftt
+  echo "PERL_CC=`$PERL_COMMAND -MConfig -e 'print $Config{cc}'`" >>$mft
+  echo "PERL_CCOPTS=`$PERL_COMMAND -MExtUtils::Embed -e ccopts`" >>$mft
+  echo "PERL_LIBS=`$PERL_COMMAND -MExtUtils::Embed -e ldopts`" >>$mft
+  echo "" >>$mft
+  cat $mftt >> $mft
+  rm -f $mftt
+fi
+
+# Record the build variable in the Makefile.
+
+echo "build=$build" >>$mft
+echo "" >>$mft
+
+# Finally, join on the generic base make file, which contains the actual
+# rules and stuff.
+
+cat ../OS/Makefile-Base >> $mft || exit 1
+
+# If the new makefile is the same as the existing one, say so, and just
+# update the timestamp. Otherwise remove the old and install the new.
+
+if      [ -s $mf ] && cmp -s $mft $mf
+then    echo ">>> rebuilt $mf unchanged"
+        echo " "
+        touch $mf || exit
+        rm -f $mft
+elif    rm -f $mf
+        mv $mft $mf
+then    echo ">>> New $mf installed"
+        echo '>>> Use "make makefile" if you need to force rebuilding of the makefile'
+        echo " "
+else    echo " "
+        echo "*** Failed to install $mf - see $mft"
+        echo " "
+        exit 1;
+fi
+
+# End of Configure-Makefile
diff --git a/src/scripts/Configure-config.h b/src/scripts/Configure-config.h
new file mode 100755
index 000000000..2ec437276
--- /dev/null
+++ b/src/scripts/Configure-config.h
@@ -0,0 +1,54 @@
+#! /bin/sh
+# $Cambridge: exim/src/scripts/Configure-config.h,v 1.1 2004/10/06 15:07:40 ph10 Exp $
+
+# Build the config.h file, using the buildconfig program, first ensuring that
+# it exists.
+
+# 22-May-1996: remove the use of the "-a" flag for /bin/sh because it is not
+# implemented in the FreeBSD shell. Sigh.
+
+# 12-Mar-1997: add s/#.*$// to the sed script to allow for comments on the
+# ends of settings - someone got caught.
+
+# 18-Apr-1997: put the tab character into a variable to stop it getting
+# lost by accident (which has happened a couple of times).
+
+# 19-Jan-1998: indented settings in the makefile weren't being handled
+# correctly; added [$st]* before \\([A-Z] in the pattern, to ignore leading
+# space. Oddly, the pattern previously read ^\([A-Z which didn't seem to
+# cause a problem (but did when the new bit was put in).
+
+make buildconfig || exit 1
+
+# BEWARE: tab characters needed in the following sed command. They have had
+# a nasty tendency to get lost in the past, causing a problem if a tab has
+# actually been present in makefile. Use a variable to hold a space and a
+# tab to keep the tab in one place. This makes the sed option horrendous to
+# read, but the whole script is safer.
+
+st='	 '
+
+(sed -n \
+  "/\\\$/d;s/#.*\$//;s/^[$st]*\\([A-Z][^:$st]*\\)[$st]*=[$st]*\\([^$st]*\\)[$st]*\$/\\1=\\2 export \\1/p" \
+  < Makefile ; echo "./buildconfig") | /bin/sh
+
+# If buildconfig ends with an error code, it will have output an error
+# message. Ensure that a broken config.h gets deleted.
+
+if [ $? != 0 ] ; then
+  rm -f config.h
+  exit 1
+fi
+
+# Double-check that config.h is complete.
+
+if [ "`tail -1 config.h`" != "/* End of config.h */" ] ; then
+  echo "*** config.h appears to be incomplete"
+  echo "*** unexpected failure in buildconfig program"
+  exit 1
+fi
+
+echo ">>> config.h built"
+echo ""
+
+# End of Configure-config.h
diff --git a/src/scripts/Configure-eximon b/src/scripts/Configure-eximon
new file mode 100755
index 000000000..1ea74b7ea
--- /dev/null
+++ b/src/scripts/Configure-eximon
@@ -0,0 +1,52 @@
+#! /bin/sh
+# $Cambridge: exim/src/scripts/Configure-eximon,v 1.1 2004/10/06 15:07:40 ph10 Exp $
+
+# Shell script to build the configurable part of the Exim monitor's start-up
+# script. This is built from various configuration files. The final part is
+# added in the Makefile, using various macros that are available at that stage.
+
+scripts=../scripts
+
+# First off, get the OS type, and check that there is a make file for it.
+
+os=`$scripts/os-type -generic` || exit 1
+
+if	test ! -r ../OS/Makefile-$os
+then    echo ""
+	echo "*** Sorry - operating system $os is not supported"
+        echo "*** See OS/Makefile-* for supported systems" 1>&2
+        echo ""
+	exit 1;
+fi
+
+# We also need the architecture type, in order to test for any architecture-
+# specific configuration files.
+
+arch=`$scripts/arch-type` || exit 1
+
+# Build a file called eximon in the current directory by joining
+# the generic default configure file, the OS base configure file, and then
+# local generic, OS-specific, architecture-specific, and OS+architecture-
+# specific configurationfiles, if they exist. These files all contain variable
+# definitions, with later definitions overriding earlier ones.
+
+echo "#!/bin/sh" > eximon
+chmod a+x eximon
+
+# Concatenate the configuration files that exist
+
+for f in OS/eximon.conf-Default \
+         OS/eximon.conf-$os \
+         Local/eximon.conf \
+         Local/eximon.conf-$os \
+         Local/eximon.conf-$arch \
+         Local/eximon.conf-$os-$arch
+do   if test -r ../$f
+     then   echo "# From $f"
+	    sed '/^#/d;/^[   ]*$/d' ../$f || exit 1
+	    echo "# End of $f"
+	    echo ""
+     fi
+done >> eximon || exit 1
+
+# End of Configure-eximon
diff --git a/src/scripts/Configure-os.c b/src/scripts/Configure-os.c
new file mode 100755
index 000000000..d7613bcda
--- /dev/null
+++ b/src/scripts/Configure-os.c
@@ -0,0 +1,31 @@
+#! /bin/sh
+# $Cambridge: exim/src/scripts/Configure-os.c,v 1.1 2004/10/06 15:07:40 ph10 Exp $
+
+# Shell script to build os.c. There doesn't have to be an OS-specific os.c
+# file, but if there is, it gets copied at the start of os.c. The basic src
+# copy of os.c contains generic functions, controlled in some cases by
+# macro switches so that where they are common to a number of OS, they can
+# just be switched in.
+
+scripts=../scripts
+
+# First off, get the OS type, and check that there is a make file for it.
+
+os=`$scripts/os-type -generic` || exit 1
+
+if	test ! -r ../OS/Makefile-$os
+then    echo ""
+	echo "*** Sorry - operating system $os is not supported"
+        echo "*** See OS/Makefile-* for supported systems" 1>&2
+        echo ""
+	exit 1;
+fi
+
+# Now build the file
+
+rm -f os.c
+echo '#include "exim.h"' > os.c || exit 1
+test -r ../OS/os.c-$os && cat ../OS/os.c-$os >> os.c
+echo '#include "../src/os.c"' >> os.c || exit 1
+
+# End of Configure-os.c
diff --git a/src/scripts/Configure-os.h b/src/scripts/Configure-os.h
new file mode 100755
index 000000000..b395af499
--- /dev/null
+++ b/src/scripts/Configure-os.h
@@ -0,0 +1,49 @@
+#! /bin/sh
+# $Cambridge: exim/src/scripts/Configure-os.h,v 1.1 2004/10/06 15:07:40 ph10 Exp $
+
+# Shell script to create a link to the appropriate OS-specific header file.
+
+scripts=../scripts
+
+# Get the OS type, and check that there is a make file for it.
+
+os=`$scripts/os-type -generic` || exit 1
+
+if	test ! -r ../OS/Makefile-$os
+then    echo ""
+	echo "*** Sorry - operating system $os is not supported"
+        echo "*** See OS/Makefile-* for supported systems" 1>&2
+        echo ""
+	exit 1;
+fi
+
+# Ensure there is an OS-specific header file, and link it to os.h. There should
+# always be one if there is a make file for the OS, so its absence is somewhat
+# disastrous.
+
+if	test ! -r ../OS/os.h-$os
+then    echo ""
+	echo "*** Build error: OS/os.h-$os file is missing"
+        echo ""
+	exit 1;
+fi
+rm -f os.h
+ln -s ../OS/os.h-$os os.h || exit 1
+
+# Special-purpose fudge for older versions of Linux (pre 2.1.15) that
+# use the structure name "options" instead of "ip_options".
+
+if [ "$os" != "Linux" -a "$os" != "Linux-libc5" ] ; then exit 0; fi
+
+grep ip_options /usr/include/linux/ip.h >/dev/null
+if [ $? = 0 ] ; then exit 0; fi
+
+cat >>os.h <<End
+
+/* Fudge added because this Linux doesn't appear to have a definition
+for ip_options in /usr/include/linux/ip.h. */
+
+#define ip_options options
+End
+
+# End of Configure-os.h
diff --git a/src/scripts/MakeLinks b/src/scripts/MakeLinks
new file mode 100755
index 000000000..dd1b9eee0
--- /dev/null
+++ b/src/scripts/MakeLinks
@@ -0,0 +1,244 @@
+#!/bin/sh
+# $Cambridge: exim/src/scripts/MakeLinks,v 1.1 2004/10/06 15:07:40 ph10 Exp $
+
+# Script to build links for all the exim source files from the system-
+# specific build directory. It should be run from within that directory.
+
+test ! -d ../src && \
+  echo "*** $0 should be run in a system-specific subdirectory." && \
+  exit 1
+test -r version.c && \
+  echo "*** It appears that $0 has already been run." && \
+  exit 1
+if [ -r pcre/Makefile ] ; then
+  echo "*** It appears that $0 was previously interrupted."
+  echo "*** You need to remove the build directory, and then run 'make' again."
+  exit 1
+fi
+
+
+# Initialize the file holding the compile number
+
+echo "0" > cnumber.h
+
+echo ""
+echo ">>> Creating links to source files..."
+
+
+# The PCRE regular expression library sources have to be linked
+# independently in their own sub-directory, since their .o files
+# are built using their own Makefile in the sub-directory.
+mkdir pcre
+cd pcre
+ln -s ../../src/pcre/Makefile            Makefile
+ln -s ../../src/pcre/config.h            config.h
+ln -s ../../src/pcre/dftables.c          dftables.c
+ln -s ../../src/pcre/internal.h          internal.h
+ln -s ../../src/pcre/pcre.h              pcre.h
+ln -s ../../src/pcre/maketables.c        maketables.c
+ln -s ../../src/pcre/get.c               get.c
+ln -s ../../src/pcre/pcre.c              pcre.c
+ln -s ../../src/pcre/pcretest.c          pcretest.c
+ln -s ../../src/pcre/printint.c          printint.c
+ln -s ../../src/pcre/study.c             study.c
+cd ..
+
+# Likewise for the lookups
+mkdir lookups
+cd lookups
+ln -s ../../src/lookups/README           README
+ln -s ../../src/lookups/Makefile         Makefile
+ln -s ../../src/lookups/cdb.h            cdb.h
+ln -s ../../src/lookups/cdb.c            cdb.c
+ln -s ../../src/lookups/dbmdb.h          dbmdb.h
+ln -s ../../src/lookups/dbmdb.c          dbmdb.c
+ln -s ../../src/lookups/dnsdb.h          dnsdb.h
+ln -s ../../src/lookups/dnsdb.c          dnsdb.c
+ln -s ../../src/lookups/dsearch.h        dsearch.h
+ln -s ../../src/lookups/dsearch.c        dsearch.c
+ln -s ../../src/lookups/ibase.h          ibase.h
+ln -s ../../src/lookups/ibase.c          ibase.c
+ln -s ../../src/lookups/ldap.h           ldap.h
+ln -s ../../src/lookups/ldap.c           ldap.c
+ln -s ../../src/lookups/lsearch.h        lsearch.h
+ln -s ../../src/lookups/lsearch.c        lsearch.c
+ln -s ../../src/lookups/mysql.h          mysql.h
+ln -s ../../src/lookups/mysql.c          mysql.c
+ln -s ../../src/lookups/nis.h            nis.h
+ln -s ../../src/lookups/nis.c            nis.c
+ln -s ../../src/lookups/nisplus.h        nisplus.h
+ln -s ../../src/lookups/nisplus.c        nisplus.c
+ln -s ../../src/lookups/oracle.h         oracle.h
+ln -s ../../src/lookups/oracle.c         oracle.c
+ln -s ../../src/lookups/passwd.h         passwd.h
+ln -s ../../src/lookups/passwd.c         passwd.c
+ln -s ../../src/lookups/pgsql.h          pgsql.h
+ln -s ../../src/lookups/pgsql.c          pgsql.c
+ln -s ../../src/lookups/testdb.h         testdb.h
+ln -s ../../src/lookups/testdb.c         testdb.c
+ln -s ../../src/lookups/whoson.h         whoson.h
+ln -s ../../src/lookups/whoson.c         whoson.c
+
+ln -s ../../src/lookups/lf_functions.h   lf_functions.h
+ln -s ../../src/lookups/lf_check_file.c  lf_check_file.c
+ln -s ../../src/lookups/lf_quote.c       lf_quote.c
+
+cd ..
+
+# Likewise for the code for the routers
+mkdir routers
+cd routers
+ln -s ../../src/routers/README           README
+ln -s ../../src/routers/Makefile         Makefile
+ln -s ../../src/routers/accept.h         accept.h
+ln -s ../../src/routers/accept.c         accept.c
+ln -s ../../src/routers/dnslookup.h      dnslookup.h
+ln -s ../../src/routers/dnslookup.c      dnslookup.c
+ln -s ../../src/routers/ipliteral.h      ipliteral.h
+ln -s ../../src/routers/ipliteral.c      ipliteral.c
+ln -s ../../src/routers/iplookup.h       iplookup.h
+ln -s ../../src/routers/iplookup.c       iplookup.c
+ln -s ../../src/routers/manualroute.h    manualroute.h
+ln -s ../../src/routers/manualroute.c    manualroute.c
+ln -s ../../src/routers/queryprogram.h   queryprogram.h
+ln -s ../../src/routers/queryprogram.c   queryprogram.c
+ln -s ../../src/routers/redirect.h       redirect.h
+ln -s ../../src/routers/redirect.c       redirect.c
+
+ln -s ../../src/routers/rf_functions.h          rf_functions.h
+ln -s ../../src/routers/rf_change_domain.c      rf_change_domain.c
+ln -s ../../src/routers/rf_expand_data.c        rf_expand_data.c
+ln -s ../../src/routers/rf_get_errors_address.c rf_get_errors_address.c
+ln -s ../../src/routers/rf_get_munge_headers.c  rf_get_munge_headers.c
+ln -s ../../src/routers/rf_get_transport.c      rf_get_transport.c
+ln -s ../../src/routers/rf_get_ugid.c           rf_get_ugid.c
+ln -s ../../src/routers/rf_queue_add.c          rf_queue_add.c
+ln -s ../../src/routers/rf_lookup_hostlist.c    rf_lookup_hostlist.c
+ln -s ../../src/routers/rf_self_action.c        rf_self_action.c
+ln -s ../../src/routers/rf_set_ugid.c           rf_set_ugid.c
+
+cd ..
+
+# Likewise for the code for the transports
+mkdir transports
+cd transports
+ln -s ../../src/transports/README           README
+ln -s ../../src/transports/Makefile         Makefile
+ln -s ../../src/transports/appendfile.h     appendfile.h
+ln -s ../../src/transports/appendfile.c     appendfile.c
+ln -s ../../src/transports/autoreply.h      autoreply.h
+ln -s ../../src/transports/autoreply.c      autoreply.c
+ln -s ../../src/transports/lmtp.h           lmtp.h
+ln -s ../../src/transports/lmtp.c           lmtp.c
+ln -s ../../src/transports/pipe.h           pipe.h
+ln -s ../../src/transports/pipe.c           pipe.c
+ln -s ../../src/transports/smtp.h           smtp.h
+ln -s ../../src/transports/smtp.c           smtp.c
+
+ln -s ../../src/transports/tf_maildir.c     tf_maildir.c
+ln -s ../../src/transports/tf_maildir.h     tf_maildir.h
+
+cd ..
+
+# Likewise for the code for the authorization functions
+mkdir auths
+cd auths
+ln -s ../../src/auths/README             README
+ln -s ../../src/auths/Makefile           Makefile
+ln -s ../../src/auths/b64encode.c        b64encode.c
+ln -s ../../src/auths/b64decode.c        b64decode.c
+ln -s ../../src/auths/call_pam.c         call_pam.c
+ln -s ../../src/auths/call_pwcheck.c     call_pwcheck.c
+ln -s ../../src/auths/call_radius.c      call_radius.c
+ln -s ../../src/auths/cyrus_sasl.c       cyrus_sasl.c
+ln -s ../../src/auths/cyrus_sasl.h       cyrus_sasl.h
+ln -s ../../src/auths/get_data.c         get_data.c
+ln -s ../../src/auths/get_no64_data.c    get_no64_data.c
+ln -s ../../src/auths/md5.c              md5.c
+ln -s ../../src/auths/xtextencode.c      xtextencode.c
+ln -s ../../src/auths/xtextdecode.c      xtextdecode.c
+ln -s ../../src/auths/cram_md5.c         cram_md5.c
+ln -s ../../src/auths/cram_md5.h         cram_md5.h
+ln -s ../../src/auths/plaintext.c        plaintext.c
+ln -s ../../src/auths/plaintext.h        plaintext.h
+ln -s ../../src/auths/pwcheck.c          pwcheck.c
+ln -s ../../src/auths/pwcheck.h          pwcheck.h
+ln -s ../../src/auths/auth-spa.c         auth-spa.c
+ln -s ../../src/auths/auth-spa.h         auth-spa.h
+ln -s ../../src/auths/sha1.c             sha1.c
+ln -s ../../src/auths/spa.c              spa.c
+ln -s ../../src/auths/spa.h              spa.h
+cd ..
+
+# The basic source files for Exim and utilities. NB local_scan.h gets linked,
+# but local_scan.c does not, because its location is taken from the build-time
+# configuration. Likewise for the os.c file, which gets build dynamically.
+
+ln -s ../src/dbfunctions.h     dbfunctions.h
+ln -s ../src/dbstuff.h         dbstuff.h
+ln -s ../src/exim.h            exim.h
+ln -s ../src/functions.h       functions.h
+ln -s ../src/globals.h         globals.h
+ln -s ../src/local_scan.h      local_scan.h
+ln -s ../src/macros.h          macros.h
+ln -s ../src/mytypes.h         mytypes.h
+ln -s ../src/osfunctions.h     osfunctions.h
+ln -s ../src/store.h           store.h
+ln -s ../src/structs.h         structs.h
+
+ln -s ../src/acl.c             acl.c
+ln -s ../src/buildconfig.c     buildconfig.c
+ln -s ../src/child.c           child.c
+ln -s ../src/crypt16.c         crypt16.c
+ln -s ../src/daemon.c          daemon.c
+ln -s ../src/dbfn.c            dbfn.c
+ln -s ../src/debug.c           debug.c
+ln -s ../src/deliver.c         deliver.c
+ln -s ../src/directory.c       directory.c
+ln -s ../src/dns.c             dns.c
+ln -s ../src/drtables.c        drtables.c
+ln -s ../src/dummies.c         dummies.c
+ln -s ../src/enq.c             enq.c
+ln -s ../src/exim.c            exim.c
+ln -s ../src/exim_dbmbuild.c   exim_dbmbuild.c
+ln -s ../src/exim_dbutil.c     exim_dbutil.c
+ln -s ../src/exim_lock.c       exim_lock.c
+ln -s ../src/expand.c          expand.c
+ln -s ../src/filter.c          filter.c
+ln -s ../src/filtertest.c      filtertest.c
+ln -s ../src/globals.c         globals.c
+ln -s ../src/header.c          header.c
+ln -s ../src/host.c            host.c
+ln -s ../src/ip.c              ip.c
+ln -s ../src/log.c             log.c
+ln -s ../src/lss.c             lss.c
+ln -s ../src/match.c           match.c
+ln -s ../src/moan.c            moan.c
+ln -s ../src/parse.c           parse.c
+ln -s ../src/perl.c            perl.c
+ln -s ../src/queue.c           queue.c
+ln -s ../src/rda.c             rda.c
+ln -s ../src/readconf.c        readconf.c
+ln -s ../src/receive.c         receive.c
+ln -s ../src/retry.c           retry.c
+ln -s ../src/rewrite.c         rewrite.c
+ln -s ../src/rfc2047.c         rfc2047.c
+ln -s ../src/route.c           route.c
+ln -s ../src/search.c          search.c
+ln -s ../src/sieve.c           sieve.c
+ln -s ../src/smtp_in.c         smtp_in.c
+ln -s ../src/smtp_out.c        smtp_out.c
+ln -s ../src/spool_in.c        spool_in.c
+ln -s ../src/spool_out.c       spool_out.c
+ln -s ../src/store.c           store.c
+ln -s ../src/string.c          string.c
+ln -s ../src/tls.c             tls.c
+ln -s ../src/tls-gnu.c         tls-gnu.c
+ln -s ../src/tls-openssl.c     tls-openssl.c
+ln -s ../src/tod.c             tod.c
+ln -s ../src/transport.c       transport.c
+ln -s ../src/tree.c            tree.c
+ln -s ../src/verify.c          verify.c
+ln -s ../src/version.c         version.c
+
+# End of MakeLinks
diff --git a/src/scripts/arch-type b/src/scripts/arch-type
new file mode 100755
index 000000000..9fa7f0bd5
--- /dev/null
+++ b/src/scripts/arch-type
@@ -0,0 +1,75 @@
+#! /bin/sh
+# $Cambridge: exim/src/scripts/arch-type,v 1.1 2004/10/06 15:07:40 ph10 Exp $
+
+# Shell script to determine the architecture type.
+
+# If EXIM_ARCHTYPE is set, use it. This allows a manual override.
+
+case "$EXIM_ARCHTYPE" in ?*) arch="$EXIM_ARCHTYPE";; esac
+
+# Otherwise, try to get a value from the uname command. When uname -p gives
+# "unknown" or something containing spaces, try -m.
+
+case "$arch" in '') arch=`uname -p 2> /dev/null`;; esac
+case "$arch" in ''|unknown|*\ *) arch=`uname -m 2> /dev/null`;; esac
+
+# Otherwise, see if ARCHTYPE is set. Some versions of NetBSD set it to
+# "NetBSD", which isn't very helpful. However, we expect uname to have
+# worked under NetBSD, so this shouldn't matter.
+
+case "$arch" in '') arch="$ARCHTYPE";; esac
+
+# Otherwise, as a cheap test, try shell's HOSTTYPE, but as tcsh sometimes sets
+# it to the OS name, ignore it if running with tcsh.
+
+case "$SHELL" in ?*tcsh) HOSTTYPE="";; esac
+
+case "$arch++$HOSTTYPE" in
+++?*) arch="$HOSTTYPE"
+      # Fix up disagreements :-)
+      case "$arch" in
+      sun4*)    arch=sparc;;
+
+# Comment by Vadim Vygonets:
+# Maybe sun4/sun4c/sun4m and sun4u (or whatever else they call the
+# Ultras, sparc64?) should be different platforms.  Maybe not.
+# NetBSD and OpenBSD (the latter is not supported) think about them
+# as different platforms.  Solaris doesn't seem to.  I have no idea
+# about Linux.
+
+      sgi)      arch=mips;;
+      MIPSEL)   arch=mips;;
+      esac
+      ;;
+esac
+
+# Give up if failed.
+
+case "$arch" in
+'') echo "" 1>&2
+    echo "*** Failed to determine the machine architecture type." 1>&2
+    echo "" 1>&2
+    echo UnKnown
+    exit 1;;
+esac
+
+# Get rid of any gash characters in the string
+
+arch=`echo $arch | sed 's,[^-+_.a-zA-Z0-9],,g'`
+
+# Some further fixups needed
+
+case "$arch" in
+i[3456]86*)         arch=i386;;
+RISC)               arch=mips;;     # MIPS Ultrix
+IP22)               arch=mips;;
+9000[78][0-9][0-9]) arch=hp9000s700;;
+9000[34][0-9][0-9]) arch=hp9000s400;;
+3050R)              arch=3050;;
+esac
+
+# OK, the script seems to have worked. Pass the value back.
+
+echo "$arch"
+
+# End of arch-type
diff --git a/src/scripts/exim_install b/src/scripts/exim_install
new file mode 100755
index 000000000..c89ed3ce8
--- /dev/null
+++ b/src/scripts/exim_install
@@ -0,0 +1,446 @@
+#! /bin/sh
+# $Cambridge: exim/src/scripts/exim_install,v 1.1 2004/10/06 15:07:40 ph10 Exp $
+
+# Script to install Exim binaries in BIN_DIRECTORY, which is defined in
+# the local Makefile. It expects to be run in a build directory. It needs
+# to be run as root in order to make exim setuid to root. If exim runs setuid
+# to (e.g.) exim, this script should be run as that user or root.
+
+# This script also installs a default configuration file in CONFIGURE_FILE
+# if there is no configuration file there, but only if CONFIGURE_FILE specifies
+# single file. If it specifies a list, no action is taken.
+
+# If a default configuration file is installed, the existence of the system
+# aliases file is tested. A default, containing only comments, is installed if
+# necessary.
+
+# If INFO_DIRECTORY is defined in any of the local Makefiles, and the Exim doc
+# directory contains the Texinfo documentation, this script also installs a
+# the info files in INFO_DIRECTORY.
+
+# If DESTDIR is defined, all file paths are prefixed with ${DESTDIR}, with the
+# sole exception of the reference to the system aliases file in the default
+# configuration, because it is assumed that Exim is not actually going to be
+# run from this position. For backward compatibility, if DESTDIR is not
+# defined, ROOT is used instead.
+
+# The script can be made to output what it would do, without actually doing
+# anything, by giving it the option "-n" (cf make). Arguments are the names
+# of things to install. No arguments installs everything.
+
+do_chown=yes
+do_symlink=yes
+
+while [ $# -gt 0 ] ; do
+  case "$1" in
+    -n)
+      real="true || "
+      ver="verification "
+      com=": "
+      echo $com ""
+      echo $com "*** Verification mode only: no commands will actually be obeyed"
+      echo $com "*** You can cut and paste the bits you want to a shell, etc"
+      echo $com ""
+      echo cd `pwd`
+      ;;
+
+    -no_chown)
+      do_chown=no
+      ;;
+
+    -no_symlink)
+      do_symlink=no
+      ;;
+
+    *)
+      break
+      ;;
+  esac
+  shift
+done
+
+# Get the values of BIN_DIRECTORY, CONFIGURE_FILE, INFO_DIRECTORY, NO_SYMLINK,
+# SYSTEM_ALIASES_FILE, and EXE from the global Makefile (in the build
+# directory). EXE is empty except in the Cygwin environment. In each case, keep
+# the latest definition, thus respecting the Makefiles precedence. The sed
+# sequences here are messy, but have to be very "basic" in order to work on
+# Solaris, where the regular expressions in sed are primitive indeed. Modify at
+# your peril.
+
+BIN_DIRECTORY=`sed -n   -e '/^ *BIN_DIRECTORY *=/{s/^[^=]*= *//; s/ \{1,\}#.*//;s/ *$//;h;}' -e '${g;p;}' Makefile`
+CONFIGURE_FILE=`sed -n -e '/^ *CONFIGURE_FILE *=/{s/^[^=]*= *//; s/ \{1,\}#.*//;s/ *$//;h;}' -e '${g;p;}' Makefile`
+INFO_DIRECTORY=`sed -n -e '/^ *INFO_DIRECTORY *=/{s/^[^=]*= *//; s/ \{1,\}#.*//;s/ *$//;h;}' -e '${g;p;}' Makefile`
+NO_SYMLINK=`sed -n         -e '/^ *NO_SYMLINK *=/{s/^[^=]*= *//; s/ \{1,\}#.*//;s/ *$//;h;}' -e '${g;p;}' Makefile`
+SYSTEM_ALIASES_FILE=`sed -n -e '/^ *SYSTEM_ALIASES_FILE *=/{s/^[^=]*= *//; s/ \{1,\}#.*//;s/ *$//;h;}' -e '${g;p;}' Makefile`
+EXE=`sed -n                                 -e '/^ *EXE *=/{s/^[^=]*= *//; s/ \{1,\}#.*//;s/ *$//;h;}' -e '${g;p;}' Makefile`
+
+# Set a default for SYSTEM_ALIASES_FILE
+
+if [ "${SYSTEM_ALIASES_FILE}" = "" ] ; then
+  SYSTEM_ALIASES_FILE=/etc/aliases
+fi
+
+# Allow INST_xx to over-ride xx
+case "$INST_BIN_DIRECTORY"       in ?*) BIN_DIRECTORY="$INST_BIN_DIRECTORY";; esac
+case "$INST_CONFIGURE_FILE"      in ?*) CONFIGURE_FILE="$INST_CONFIGURE_FILE";; esac
+case "$INST_INFO_DIRECTORY"      in ?*) INFO_DIRECTORY="$INST_INFO_DIRECTORY";; esac
+case "$INST_SYSTEM_ALIASES_FILE" in ?*) SYSTEM_ALIASES_FILE="$INST_SYSTEM_ALIASES_FILE";; esac
+
+case "$INST_UID"     in '') INST_UID=root;;    *) INST_UID="$INST_UID";; esac
+case "$INST_CP"      in '') CP=cp;;            *) CP="$INST_CP";; esac
+case "$INST_MV"      in '') MV=mv;;            *) MV="$INST_MV";; esac
+case "$INST_LN"      in '') LN=ln;;            *) LN="$INST_LN";; esac
+case "$INST_CHOWN"   in '') CHOWN=chown;;      *) CHOWN="$INST_CHOWN";; esac
+case "$INST_CHMOD"   in '') CHMOD=chmod;;      *) CHMOD="$INST_CHMOD";; esac
+case "$INST_DIRNAME" in '') DIRNAME=dirname;;  *) DIRNAME="$INST_DIRNAME";; esac
+case "$INST_MKDIR"   in '') MKDIR=mkdir;;      *) MKDIR="$INST_MKDIR";; esac
+
+# Allow the user to over-ride xx
+case "$inst_dest"    in ?*) BIN_DIRECTORY="$inst_dest";; esac
+case "$inst_conf"    in ?*) CONFIGURE_FILE="$inst_conf";; esac
+case "$inst_info"    in ?*) INFO_DIRECTORY="$inst_info";; esac
+case "$inst_aliases" in ?*) SYSTEM_ALIASES_FILE="$inst_aliases";; esac
+
+# Insert ${DESTDIR} at the start of all paths so that the whole thing can be
+# installed under a different file root. For backwards compatibility, use
+# ${ROOT} if ${DESTDIR} is not set. However, we need to save the value of
+# the real system aliases file, and use that in the default configuration.
+
+ACTUAL_SYSTEM_ALIASES_FILE=${SYSTEM_ALIASES_FILE}
+DESTDIR=${DESTDIR:-${ROOT}}
+
+BIN_DIRECTORY=${DESTDIR}${BIN_DIRECTORY}
+CONFIGURE_FILE=${DESTDIR}${CONFIGURE_FILE}
+SYSTEM_ALIASES_FILE=${DESTDIR}${SYSTEM_ALIASES_FILE}
+
+if [ "${INFO_DIRECTORY}" != "" ] ; then
+  INFO_DIRECTORY=${DESTDIR}${INFO_DIRECTORY}
+fi
+
+# Overrides of other things
+case "$inst_uid"     in ?*) INST_UID="$inst_uid";; esac
+case "$inst_cp"      in ?*) CP="$inst_cp";; esac
+case "$inst_mv"      in ?*) MV="$inst_mv";; esac
+case "$inst_ln"      in ?*) LN="$inst_ln";; esac
+case "$inst_chown"   in ?*) CHOWN="$inst_chown";; esac
+case "$inst_chmod"   in ?*) CHMOD="$inst_chmod";; esac
+case "$inst_dirname" in ?*) DIRNAME="$inst_dirname";; esac
+case "$inst_mkdir"   in ?*) MKDIR="$inst_mkdir";; esac
+
+# chown is a special case; in at least one OS it is in /usr/etc instead
+# of in /usr/bin, and therefore not likely to be on the path. Another OS
+# has it in /usr/sbin. This fudge tries to cope with these variations.
+
+# Otherwise, and for other commands, we assume that the normal PATH will
+# give access to where they are on your operating system (normally /usr/bin
+# or /bin).
+
+if [ "${CHOWN}" = "chown" -a -x /usr/sbin/chown ] ; then
+  CHOWN=/usr/sbin/chown
+fi
+
+if [ "${CHOWN}" = "chown" -a ! -f /usr/bin/chown -a -f /usr/etc/chown ] ; then
+  CHOWN=/usr/etc/chown
+fi
+
+# See if the exim monitor has been built
+
+if [ -f eximon -a -f eximon.bin ]; then
+  exim_monitor="eximon eximon.bin"
+fi
+
+# If bin directory doesn't exist, try to create it
+
+if [ ! -d "${BIN_DIRECTORY}" ]; then
+  echo mkdir -p ${BIN_DIRECTORY}
+  ${real} mkdir -p ${BIN_DIRECTORY}
+  if [ $? -ne 0 ]; then
+    echo $com ""
+    echo $com "*** Exim installation ${ver}failed ***"
+    exit 1
+  else
+    ${real} echo $com ${BIN_DIRECTORY} created
+  fi
+fi
+
+# If no arguments, install everything
+
+if [ $# -gt 0 ]; then
+  set $@
+else
+  set exim${EXE} ${exim_monitor} exim_dumpdb${EXE} exim_fixdb${EXE} \
+      exim_tidydb${EXE} exinext exiwhat exim_dbmbuild${EXE} exicyclog \
+      exigrep eximstats exipick exiqgrep exiqsumm exim_lock${EXE} \
+      exim_checkaccess
+fi
+
+echo $com ""
+echo $com Installation directory is ${BIN_DIRECTORY}
+echo $com ""
+
+while [ $# -gt 0 ]; do
+  name=$1
+  shift
+
+  if [ ! -s ${name} ]; then
+    echo $com ""
+    echo $com "*** `pwd`/${name} does not exist or is empty"
+    echo $com "*** Have you built Exim successfully?"
+    echo $com "*** Exim installation ${ver}failed ***"
+    exit 1
+  fi
+
+  # The exim binary is handled specially
+
+  if [ $name = exim${EXE} ]; then
+    version=exim-`./exim -bV -C /dev/null | \
+      awk '/Exim version/ { OFS=""; print $3,"-",substr($4,2,length($4)-1) }'`${EXE}
+
+    if [ "${version}" = "exim-${EXE}" ]; then
+      echo $com ""
+      echo $com "*** Could not run ./exim to find version number ***"
+      echo $com "*** Exim installation ${ver}failed ***"
+      exit 1
+    fi
+
+    # Do something only if newer than existing file, or no existing file
+
+    if ../scripts/newer ${name} ${BIN_DIRECTORY}/${version}; then
+      echo ${CP} ${name} ${BIN_DIRECTORY}/${version}
+      ${real} ${CP} ${name} ${BIN_DIRECTORY}/${version}
+      if [ $? -ne 0 ]; then
+        echo $com ""
+        echo $com "*** Exim installation ${ver}failed ***"
+        exit 1
+      fi
+
+      # After copy, set ownership and permissions, unless disabled
+
+      if [ "$do_chown" != "no" ]; then
+        echo ${CHOWN} ${INST_UID} ${BIN_DIRECTORY}/${version}
+        ${real} ${CHOWN} ${INST_UID} ${BIN_DIRECTORY}/${version}
+        if [ $? -ne 0 ]; then
+          echo $com ""
+          echo $com "*** You must be ${INST_UID} to install exim ***"
+          exit 1
+        fi
+        echo ${CHMOD} a+x ${BIN_DIRECTORY}/${version}
+        ${real} ${CHMOD} a+x ${BIN_DIRECTORY}/${version}
+        if [ $? -ne 0 ]; then
+          echo $com ""
+          echo $com "*** Exim installation ${ver}failed ***"
+          exit 1
+        fi
+        echo ${CHMOD} u+s ${BIN_DIRECTORY}/${version}
+        ${real} ${CHMOD} u+s ${BIN_DIRECTORY}/${version}
+        if [ $? -ne 0 ]; then
+          echo $com ""
+          echo $com "*** Exim installation ${ver}failed ***"
+          exit 1
+        fi
+      else
+        echo $com "$CHOWN $INST_UID omitted: -no_chown was specified"
+        echo $com "$CHMOD u+s omitted: -no_chown was specified"
+      fi
+
+      # Now sort out the "exim" alias, unless NO_SYMLINK is set.
+
+      if [ "X$NO_SYMLINK" = "X" ] && [ "$do_symlink" != "no" ] ; then
+
+        #  First check whether "exim" exists in the directory.
+        if [ -f ${BIN_DIRECTORY}/exim ]; then
+
+          # If it's not a symbolic link, make a copy with the old version number
+          if [ `ls -l ${BIN_DIRECTORY}/exim | cut -c1-1` != 'l' ]; then
+            oldversion=exim-`${BIN_DIRECTORY}/exim -bV -C /dev/null | \
+              awk '/Exim version/ { OFS=""; print $3,"-",substr($4,2,length($4)-1) }'`${EXE}
+            if [ "${version}" = "${oldversion}" ] ; then
+              echo $com ""
+              echo $com "*** Existing file called exim has the same version and compile number ***"
+              echo $com "*** Exim installation ${ver}failed ***"
+              exit 1
+            fi
+            echo ${CP} ${BIN_DIRECTORY}/exim ${BIN_DIRECTORY}/${oldversion}
+            ${real} ${CP} ${BIN_DIRECTORY}/exim ${BIN_DIRECTORY}/${oldversion}
+            if [ $? -ne 0 ]; then
+              echo $com ""
+              echo $com "*** Exim installation ${ver}failed ***"
+              exit 1
+            fi
+          fi
+
+          # Now we can move the name "exim" to be a symbolic link to the new
+          # version, atomically.
+
+          echo \(cd ${BIN_DIRECTORY}\; ${LN} -s ${version} temporary_exim\)
+          (${real} cd ${BIN_DIRECTORY}; ${real} ${LN} -s ${version} temporary_exim)
+          if [ $? -ne 0 ]; then
+            echo $com ""
+            echo $com "*** Exim installation ${ver}failed ***"
+            exit 1
+          fi
+
+          echo ${MV} -f ${BIN_DIRECTORY}/temporary_exim ${BIN_DIRECTORY}/exim
+          ${real} ${MV} -f ${BIN_DIRECTORY}/temporary_exim ${BIN_DIRECTORY}/exim
+          if [ $? -ne 0 ]; then
+            echo $com ""
+            echo $com "*** Exim installation ${ver}failed ***"
+            exit 1
+          fi
+
+        # If "exim" does not already exist just create a symbolic link.
+
+        else
+          echo \(cd ${BIN_DIRECTORY}\; ${LN} -s ${version} exim\)
+          (${real} cd ${BIN_DIRECTORY}; ${real} ${LN} -s ${version} exim)
+          if [ $? -ne 0 ]; then
+            echo $com ""
+            echo $com "*** Exim installation ${ver}failed ***"
+            exit 1
+          fi
+        fi
+
+      else
+        echo $com "creation of symlink omitted"
+        if [ "X$NO_SYMLINK" != "X" ] ; then
+          echo $com "(NO_SYMLINK is specified in Local/Makefile)"
+        else
+          echo $com "(-no_symlink was specified)"
+        fi
+      fi
+
+    # New binary is not newer than the installed file
+
+    else
+      echo $com ${name} is not newer than ${BIN_DIRECTORY}/${version}
+    fi
+
+  # Handle everything other than the exim binary itself
+
+  else
+    if ../scripts/newer ${name} ${BIN_DIRECTORY}/${name}; then
+      if [ -f ${BIN_DIRECTORY}/${name} ]; then
+        echo ${CP} ${BIN_DIRECTORY}/${name} ${BIN_DIRECTORY}/${name}.O
+        ${real} ${CP} ${BIN_DIRECTORY}/${name} ${BIN_DIRECTORY}/${name}.O
+        if [ $? -ne 0 ]; then
+          echo $com ""
+          echo $com "*** Exim installation ${ver}failed ***"
+          exit 1
+        fi
+      fi
+      echo ${CP} ${name} ${BIN_DIRECTORY}
+      ${real} ${CP} ${name} ${BIN_DIRECTORY}
+      if [ $? -ne 0 ]; then
+        echo $com ""
+        echo $com "*** Exim installation ${ver}failed ***"
+        exit 1
+      fi
+    else
+      echo $com ${name} is not newer than ${BIN_DIRECTORY}/${name}
+    fi
+  fi
+
+done
+
+
+
+# If there is no configuration file, install the default, modifying it to refer
+# to the configured system aliases file. If there is no setting for
+# SYSTEM_ALIASES_FILE, use the traditional /etc/aliases. If the file does not
+# exist, install a default (dummy) for that too.
+
+# However, if CONFIGURE_FILE specifies a list of files, skip this code.
+
+echo $com ""
+
+if [ `expr "${CONFIGURE_FILE}" : ".*:"` -ne 0 ] ; then
+  echo $com Runtime configuration is specified as the following list:
+  echo $com ' ' ${CONFIGURE_FILE}
+  echo $com Therefore, skipping automatic installation.
+
+elif [ ! -f ${CONFIGURE_FILE} ]; then
+  echo $com Installing default configuration in ${CONFIGURE_FILE}
+  echo $com because there is no existing configuration file.
+  if [ "${SYSTEM_ALIASES_FILE}" = "" ] ; then
+    SYSTEM_ALIASES_FILE=/etc/aliases
+    echo $com This configuration has system aliases in ${SYSTEM_ALIASES_FILE}.
+  fi
+
+  echo ${MKDIR} -p `${DIRNAME} ${CONFIGURE_FILE}`
+  ${real} ${MKDIR} -p `${DIRNAME} ${CONFIGURE_FILE}`
+
+  echo sed -e '\\'
+  echo "  \"/SYSTEM_ALIASES_FILE/ s'SYSTEM_ALIASES_FILE'${ACTUAL_SYSTEM_ALIASES_FILE}'\"" '\\'
+  echo "  ../src/configure.default > \${CONFIGURE_FILE}"
+
+  # I can't find a way of writing this using the ${real} feature because
+  # it seems that the output redirection always happens, even when -n was
+  # specified. So control it the hard way.
+
+  if [ "$real" = "" ] ; then
+    sed -e \
+      "/SYSTEM_ALIASES_FILE/ s'SYSTEM_ALIASES_FILE'${ACTUAL_SYSTEM_ALIASES_FILE}'" \
+      ../src/configure.default > ${CONFIGURE_FILE}
+  else
+    true
+  fi
+
+  if [ $? -ne 0 ]; then
+    echo $com ""
+    echo $com "*** Exim installation ${ver}failed ***"
+    exit 1
+  fi
+  if [ ! -f ${SYSTEM_ALIASES_FILE} ]; then
+    echo $com '****'
+    echo $com Installing a dummy ${SYSTEM_ALIASES_FILE} file because you do not have
+    echo $com one, and the default configuration requires it. You should
+    echo $com edit ${SYSTEM_ALIASES_FILE} and at least create an alias for postmaster.
+    echo $com '***'
+    echo ${CP} ../src/aliases.default ${SYSTEM_ALIASES_FILE}
+    ${real} ${CP} ../src/aliases.default ${SYSTEM_ALIASES_FILE}
+  fi
+
+else
+  echo $com Configuration file ${CONFIGURE_FILE} already exists
+fi
+
+# Install info files if the directory is defined and the Texinfo
+# source documentation is present.
+
+if [ "${INFO_DIRECTORY}" != "" -a -f ../doc/spec.texinfo ] ; then
+  echo $com ""
+  if [ ! -d "${INFO_DIRECTORY}" ] ; then
+    echo mkdir -p ${INFO_DIRECTORY}
+    ${real} mkdir -p ${INFO_DIRECTORY}
+    if [ $? -ne 0 ]; then
+      echo $com ""
+      echo $com "*** Exim installation ${ver}failed ***"
+      exit 1
+    else
+      echo $com ${INFO_DIRECTORY} created
+    fi
+  fi
+
+  echo $com Info installation directory is ${INFO_DIRECTORY}
+  echo $com ""
+
+  ${real} makeinfo --no-split --output exim.info ../doc/spec.texinfo
+  echo ${CP} exim.info ${INFO_DIRECTORY}
+  ${real} ${CP} exim.info ${INFO_DIRECTORY}
+  ${real} install-info --section="Exim" \
+      --entry "* User guide: (exim).           Exim manual" \
+      ${INFO_DIRECTORY}/exim.info ${INFO_DIRECTORY}/dir
+  ${real} makeinfo --no-split --output exim_filter.info ../doc/filter.texinfo
+  echo ${CP} exim_filter.info ${INFO_DIRECTORY}
+  ${real} ${CP} exim_filter.info ${INFO_DIRECTORY}
+  ${real} install-info --section="Exim" \
+      --entry "* Filtering: (exim_filter).     Filtering mail with Exim" \
+      ${INFO_DIRECTORY}/exim_filter.info ${INFO_DIRECTORY}/dir
+fi
+
+# Everything OK
+
+echo $com ""
+echo $com Exim installation ${ver}complete
+
+# End of exim_install
diff --git a/src/scripts/newer b/src/scripts/newer
new file mode 100755
index 000000000..a2b92f6b8
--- /dev/null
+++ b/src/scripts/newer
@@ -0,0 +1,22 @@
+#! /bin/sh
+# $Cambridge: exim/src/scripts/newer,v 1.1 2004/10/06 15:07:40 ph10 Exp $
+
+# Script to determine whether the first file is newer than the second.
+# If the first does not exist, the answer is "no";
+# if the second does not exist, the answer is "yes";
+# otherwise their ages are compared using "find".
+
+if [ $# -ne 2 ]; then
+  echo "*** Two file names needed for 'newer' ***"
+  exit 2;
+fi
+
+if [ ! -f $1 ]; then exit 1; fi
+if [ ! -f $2 ]; then exit 0; fi
+
+case `find $1 -newer $2 -print` in
+'')	exit 1;;
+*)	exit 0;;
+esac
+
+# End
diff --git a/src/scripts/os-type b/src/scripts/os-type
new file mode 100755
index 000000000..d747ae908
--- /dev/null
+++ b/src/scripts/os-type
@@ -0,0 +1,170 @@
+#! /bin/sh
+# $Cambridge: exim/src/scripts/os-type,v 1.1 2004/10/06 15:07:40 ph10 Exp $
+
+# Shell script to determine the operating system type. Some of the heuristics
+# herein have accumulated over the years and may not strictly be needed now,
+# but they are left in under the principle of "If it ain't broke, don't fix
+# it."
+
+# For some OS there are two variants: a full name, which is used for the
+# build directory, and a generic name, which is used to identify the OS-
+# specific scripts, and which can be the same for different versions of
+# the OS. Solaris 2 is one such OS. The option -generic specifies the
+# latter type of output.
+
+# If EXIM_OSTYPE is set, use it. This allows a manual override.
+
+case "$EXIM_OSTYPE" in ?*) os="$EXIM_OSTYPE";; esac
+
+# Otherwise, try to get a value from the uname command. Use an explicit
+# option just in case there are any systems where -s is not the default.
+
+case "$os" in '') os=`uname -s`;; esac
+
+# It is believed that all systems respond to uname -s, but just in case
+# there is one that doesn't, use the shell's $OSTYPE variable. It is known
+# to be unhelpful for some systems (under IRIX is it "irix" and under BSDI
+# 3.0 it may be "386BSD") but those systems respond to uname -s, so this
+# doesn't matter.
+
+case "$os" in '') os="$OSTYPE";; esac
+
+# Failed to find OS type.
+
+case "$os" in
+'') echo "" 1>&2
+    echo "*** Failed to determine the operating system type." 1>&2
+    echo "" 1>&2
+    echo UnKnown
+    exit 1;;
+esac
+
+# Clean out gash characters
+
+os=`echo $os | sed 's,[^-+_.a-zA-Z0-9],,g'`
+
+# A value has been obtained for the os. Some massaging may be needed in
+# some cases to get a uniform set of values. In earlier versions of this
+# script, $OSTYPE was looked at before uname -s, and various shells set it
+# to things that are subtly different. It is possible that some of this may
+# no longer be needed.
+
+case "$os" in
+aix*)       os=AIX;;
+AIX*)       os=AIX;;
+bsdi*)      os=BSDI;;
+BSDOS)      os=BSDI;;
+BSD_OS)     os=BSDI;;
+CYGWIN*)    os=CYGWIN;;
+dgux)       os=DGUX;;
+freebsd*)   os=FreeBSD;;
+gnu)        os=GNU;;
+Irix5)      os=IRIX;;
+Irix6)      os=IRIX6;;
+IRIX64)     os=IRIX6;;
+irix6.5)    os=IRIX65;;
+IRIX)       version=`uname -r`
+            case "$version" in
+            5*)  os=IRIX;;
+            6.5) version=`uname -R | awk '{print $NF}'`
+                 version=`echo $version | sed 's,[^-+_a-zA-Z0-9],,g'`
+                 os=IRIX$version;;
+            6*)  os=IRIX632;;
+            esac;;
+HI-OSF1-MJ) os=HI-OSF;;
+HI-UXMPP)   os=HI-OSF;;
+hpux*)      os=HP-UX;;
+linux)      os=Linux;;
+linux-*)    os=Linux;;
+Linux-*)    os=Linux;;
+netbsd*)    os=NetBSD;;
+openbsd*)   os=OpenBSD;;
+osf1)       os=OSF1;;
+qnx*)       os=QNX;;
+solaris*)   os=SunOS5;;
+sunos4*)    os=SunOS4;;
+UnixWare)   os=Unixware7;;
+Ultrix)     os=ULTRIX;;
+ultrix*)    os=ULTRIX;;
+esac
+
+# In the case of SunOS we need to distinguish between SunOS4 and Solaris (aka
+# SunOS5); in the case of BSDI we need to distinguish between versions 3 and 4;
+# in the case of HP-UX we need to distinguish between version 9 and later.
+
+case "$os" in
+SunOS)  case `uname -r` in
+        5*)     os="${os}5";;
+        4*)     os="${os}4";;
+        esac;;
+
+BSDI)   case `uname -r` in
+        3*)     os="${os}3";;
+        4.2*)   os="${os}4.2";;
+        4*)     os="${os}4";;
+        esac;;
+
+HP-UX)  case `uname -r` in
+        A.09*)  os="${os}-9";;
+        esac;;
+esac
+
+# Need to distinguish Solaris from the version on the HAL (64bit sparc,
+# CC=hcc -DV7). Also need to distinguish different versions of the OS
+# for building different binaries.
+
+case "$os" in
+SunOS5) case `uname -m` in
+        sun4H)  os="${os}-hal";;
+            *)  os="${os}-`uname -r`";;
+        esac
+        ;;
+
+# In the case of Linux we need to distinguish which libc is used.
+# This is more cautious than it needs to be. In practice libc5 will always
+# be a symlink, and libc6 will always be a linker control file, but it's
+# easy enough to do a better check, and check the symlink destination or the
+# control file contents and make sure.
+
+Linux)  if [ -L /usr/lib/libc.so ]; then
+            if [ x"$(file /usr/lib/libc.so | grep "libc.so.5")"x != xx ]; then
+                    os=Linux-libc5
+            fi
+        else
+            if grep -q libc.so.5 /usr/lib/libc.so; then
+                    os=Linux-libc5
+            fi
+        fi
+        ;;
+
+# In the case of NetBSD we need to distinguish between a.out, ELF
+# and COFF binary formats.  However, a.out and COFF are the same
+# for our purposes, so both of them are defined as "a.out".
+# Todd Vierling of Wasabi Systems reported that NetBSD/sh3 (the
+# only NetBSD port that uses COFF binary format) will switch to
+# ELF soon.
+
+NetBSD) if echo __ELF__ | ${CC-cc} -E - | grep -q __ELF__ ; then
+	    # Non-ELF system
+	    os="NetBSD-a.out"
+	fi
+        ;;
+
+esac
+
+# If a generic OS name is requested, some further massaging is needed
+# for some systems.
+
+if [ "$1" = '-generic' ]; then
+  case "$os" in
+  SunOS5*) os=SunOS5;;
+  BSDI*)   os=BSDI;;
+  IRIX65*) os=IRIX65;;
+  esac
+fi
+
+# OK, the script seems to have worked. Pass the value back.
+
+echo "$os"
+
+# End of os-type