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Diffstat (limited to 'src/scripts/Configure-Makefile')
| -rwxr-xr-x | src/scripts/Configure-Makefile | 170 |
1 files changed, 170 insertions, 0 deletions
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 |