summaryrefslogtreecommitdiff
path: root/src/scripts/Configure-Makefile
blob: b6f2e2e0979a1fa2760638edf01335156faaf486 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
#! /bin/sh

# 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.
#
# Copyright (c) The Exim Maintainers 2016


# 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
mftepcp=$mf-tepcp
mftepcp2=$mf-tepcp2

look_mf=lookups/Makefile
look_mf_pre=${look_mf}.predynamic
look_mf_post=${look_mf}.postdynamic

# Ensure the temporary does not exist and start the new one by setting
# the OSTYPE and ARCHTYPE variables.

rm -f $mft $mftt $mftepcp $mftepcp2 $look_mf-t
(echo "OSTYPE=$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 \
     | sed 's/^TMPDIR=/EXIM_&/' \
     >> $mft || exit 1

# handle PKG_CONFIG_PATH because we need it in our env, and we want to handle
# wildcards; note that this logic means all setting _appends_ values, never
# replacing; if that's a problem, we can revisit.
sed -n "s/^[$st]*PKG_CONFIG_PATH[$st]*[+]*=[$st]*//p" $mft | \
  sed "s/[$st]*\$//" >> $mftepcp
if test -s ./$mftepcp
then
  # expand any wildcards and strip spaces, to make it a real PATH-like variable
  ( IFS=":${IFS-$st}"; for P in `cat ./$mftepcp`; do echo "$P"; done ) | xargs | sed "s/[$st]/:/g" >./$mftepcp2
  sed "s/^/PKG_CONFIG_PATH='/" < ./$mftepcp2 | sed "s/\$/'/" > ./$mftepcp
  . ./$mftepcp
  export PKG_CONFIG_PATH
  egrep -v "^[$st]*PKG_CONFIG_PATH[$st]*=" ./$mft > ./$mftt
  rm -f ./$mft
  (
    echo "# Collapsed PKG_CONFIG_PATH in build-prep:"
    sed "s/'//g" ./$mftepcp
    echo "# End of collapsed PKG_CONFIG_PATH"
    echo ""
    cat ./$mftt
  ) > ./$mft
  rm -f ./$mftt
fi
rm -f ./$mftepcp ./$mftepcp2

# handle pkg-config
# beware portability of extended regexps with sed.
egrep "^[$st]*(AUTH|LOOKUP)_[A-Z0-9_]*[$st]*=[$st]*" $mft | \
  sed "s/[$st]*=/='/" | \
  sed "s/\$/'/" > $mftt
egrep "^[$st]*((USE_(OPENSSL|GNUTLS)_PC)|SUPPORT_TLS|USE_GNUTLS|PCRE_CONFIG|AVOID_GNUTLS_PKCS11)[$st]*=[$st]*" $mft | \
  sed "s/[$st]*=/='/" | \
  sed "s/\$/'/" >> $mftt
if test -s $mftt
then
  (
  echo "# pkg-config fixups"
  . ./$mftt
  for var in `cut -d = -f 1 < $mftt`; do
    case $var in

      USE_*_PC)
        eval "pc_value=\"\$$var\""
        need_this=''
        need_core=''
        if [ ".$SUPPORT_TLS" = "." ]; then
          # no TLS, not referencing
          true
        elif [ ".$var" = ".USE_GNUTLS_PC" ] && [ ".$USE_GNUTLS" != "." ]; then
          need_this=t
          need_core="gnutls-special"
        elif [ ".$var" = ".USE_OPENSSL_PC" ] && [ ".$USE_GNUTLS" = "." ]; then
          need_this=t
          need_core=t
        fi
        if [ ".$need_this" != "." ]; then
          tls_include=`pkg-config --cflags $pc_value`
          if [ $? -ne 0 ]; then
            echo >&2 "*** Missing pkg-config for package $pc_value (for Exim $var build option)"
            exit 1
          fi
          tls_libs=`pkg-config --libs $pc_value`
          echo "TLS_INCLUDE=$tls_include"
          echo "TLS_LIBS=$tls_libs"
          # With hash.h pulling crypto into the core, we need to also handle that
          if [ ".$need_this" = ".t" ]; then
            echo "CFLAGS += $tls_include"
            echo "LDFLAGS += $tls_libs"
          elif [ ".$need_this" = ".gnutls-special" ]; then
            if pkg-config --atleast-version=2.10 gnutls ; then
              echo "CFLAGS += $tls_include"
              echo "LDFLAGS += $tls_libs"
            else
              echo "CFLAGS += `libgcrypt-config --cflags`"
              echo "LDFLAGS += `libgcrypt-config --libs`"
            fi
          fi
        fi
        ;;

      *_PC)
        eval "pc_value=\"\$$var\""
        base=`echo $var | sed 's/_PC$//'`
        eval "basevalue=\"\$$base\""
        if [ ".$basevalue" = "." ]; then
          # not pulling in this module, _PC defined as default? Ignore
          true
        elif [ $basevalue = 2 ]; then
          # module; handled in scripts/lookups-Makefile
          true
        else
          # main binary
          cflags=`pkg-config --cflags $pc_value`
          if [ $? -ne 0 ]; then
            echo >&2 "*** Missing pkg-config for package $pc_value (for Exim $var build option)"
            exit 1
          fi
          libs=`pkg-config --libs $pc_value`
          if [ "$var" != "${var#LOOKUP_}" ]; then
            echo "LOOKUP_INCLUDE += $cflags"
            echo "LOOKUP_LIBS += $libs"
          elif [ "$var" != "${var#AUTH_}" ]; then
            echo "CFLAGS += $cflags"
            echo "AUTH_LIBS += $libs"
          else
            echo >&2 "Don't know how to handle pkg-config for $var"
          fi
        fi
        ;;

      PCRE_CONFIG)
        case $PCRE_CONFIG in
          yes|YES|y|Y)
            cflags=`pcre-config --cflags`
            if [ $? -ne 0 ]; then
              echo >&2 "*** Missing pcre-config for regular expression support"
              exit 1
            fi
            libs=`pcre-config --libs`
            if [ ".$cflags" != "." ]; then
              echo "INCLUDE += $cflags"
            fi
            echo "PCRE_LIBS=$libs"
            ;;
        esac
        ;;

      AVOID_GNUTLS_PKCS11)
        echo "$var=yes"
        ;;

    esac
  done
  echo "# End of pkg-config fixups"
  echo
  ) >> $mft
  subexit=$?
  if [ $subexit -ne 0 ]; then
    exit $subexit
  fi
fi
rm -f $mftt

# make the lookups Makefile with the definitions
# the auxiliary script generates $look_mf_post from $look_mf_pre

cp ../src/lookups/Makefile $look_mf_pre
../scripts/lookups-Makefile

# 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

  EXTUTILS_EMBED_NOT_INSTALLED=`$PERL_COMMAND -MExtUtils::Embed -e ";" 2>&1`
  if [ "${EXTUTILS_EMBED_NOT_INSTALLED}" != "" ] ; then
    echo "Please install ExtUtils::Embed for $PERL_COMMAND"
    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.

echo "# From ../OS/Makefile-Base" >> $mft
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 && [ -s $look_mf ] && cmp -s $look_mf_post $look_mf
then    echo ">>> rebuilt $mf unchanged"
        echo " "
        touch $mf || exit
        rm -f $mft $look_mf_pre $look_mf_post
elif    rm -f $mf $look_mf $look_mf_pre
        mv $mft $mf
	mv $look_mf_post $look_mf
then    echo ">>> New $mf & $look_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 "    (or $look_mft)"
        echo " "
        exit 1;
fi

# vim: set ft=sh :
# End of Configure-Makefile