src/scripts/Configure-Makefile

   1 #! /bin/sh
   2 export LC_ALL=C
   3
   4 # Shell script to build Makefile in a build directory. It must be called
   5 # from inside the directory. It does its own checking of when to rebuild; it
   6 # just got too horrendous to get it right in "make", because of the optionally
   7 # existing configuration files.
   8 #
   9 # Copyright (c) The Exim Maintainers 1995 - 2018
  10
  11
  12 # First off, get the OS type, and check that there is a make file for it.
  13
  14 ostype=`../scripts/os-type -generic` || exit 1
  15
  16 if [ ! -r ../OS/Makefile-$ostype ] ; then
  17   echo ""
  18   echo "*** Sorry - operating system $ostype is not supported"
  19   echo "*** See OS/Makefile-* for supported systems" 1>&2
  20   echo ""
  21   exit 1
  22 fi
  23
  24 # We also need the architecture type, in order to test for any architecture-
  25 # specific configuration files.
  26
  27 archtype=`../scripts/arch-type` || exit 1
  28
  29 # Now test for either the non-existence of Makefile, or for any of its
  30 # components being newer. Note that the "newer" script gives the right
  31 # answer (for our purposes) when the first file is non-existent.
  32
  33 editme=../Local/Makefile
  34 rebuild=yes
  35
  36 if [ -f Makefile ] ; then
  37   rebuild=no
  38   if ../scripts/newer $editme Makefile || \
  39      ../scripts/newer $editme-$ostype Makefile || \
  40      ../scripts/newer $editme-$archtype Makefile || \
  41      ../scripts/newer $editme-$ostype-$archtype Makefile || \
  42      ../scripts/newer ../scripts/Configure-Makefile Makefile || \
  43      ../scripts/newer ../OS/Makefile-Base Makefile || \
  44      ../scripts/newer ../OS/Makefile-Default Makefile
  45   then
  46     rebuild=yes
  47   fi
  48 fi
  49
  50 # If the "build" variable is set it means that a build name was explicitly
  51 # given. Arrange to pick up a build-specific configuration file.
  52
  53 if [ "X$build" != "X" ] ; then
  54   mfb=Local/Makefile-$build
  55   if ../scripts/newer $editme-$build Makefile ; then
  56     rebuild=yes
  57   fi
  58 else
  59   mfb=
  60 fi
  61
  62
  63 # If Makefile is up-to-date, no need to rebuild it.
  64
  65 if [ $rebuild = no ] ; then
  66   echo "\`Makefile' is up to date."
  67   echo " "
  68   exit
  69 fi
  70
  71 # Makefile needs to be rebuilt in the current directory by joining
  72 # the generic default makefile, the OS base makefile, and then local
  73 # generic, OS-specific, architecture-specific, and OS+architecture-specific
  74 # makefiles, if they exist. These files all contain macro definitions, with
  75 # later definitions overriding earlier ones. Make a temporary file first, in
  76 # case things go wrong. A second temporary is needed for sorting out the
  77 # default Perl stuff. Use short macro names to save typing.
  78
  79 mf=Makefile
  80 mft=$mf-t
  81 mftt=$mf-tt
  82 mftepcp=$mf-tepcp
  83 mftepcp2=$mf-tepcp2
  84
  85 look_mf=lookups/Makefile
  86 look_mf_pre=${look_mf}.predynamic
  87 look_mf_post=${look_mf}.postdynamic
  88
  89 # Ensure the temporary does not exist and start the new one by setting
  90 # the OSTYPE and ARCHTYPE variables.
  91
  92 rm -f $mft $mftt $mftepcp $mftepcp2 $look_mf-t
  93 (echo "OSTYPE=$ostype"; echo "ARCHTYPE=$archtype"; echo "") > $mft || exit 1
  94
  95 # Now concatenate the files to the temporary file. Copy the files using sed to
  96 # remove comments, blank lines, and trailing white space.
  97
  98 # BEWARE: a tab character is needed in the sed command below. It has had
  99 # a nasty tendency to get lost in the past, causing a problem if a tab has
 100 # actually been present in one of the files. Use a variable to hold a space
 101 # and a tab to keep the tab in one place.
 102
 103 st='     '
 104
 105 for f in OS/Makefile-Default \
 106          OS/Makefile-$ostype \
 107          Local/Makefile \
 108          Local/Makefile-$ostype \
 109          Local/Makefile-$archtype \
 110          Local/Makefile-$ostype-$archtype \
 111          $mfb
 112 do   if test -r ../$f
 113      then   echo "# From $f"
 114             sed "/^#/d;/^[$st]*\$/d;s/[$st]*\$//" ../$f || exit 1
 115             echo "# End of $f"
 116             echo ""
 117      fi
 118 done \
 119      | sed 's/^TMPDIR=/EXIM_&/' \
 120      >> $mft || exit 1
 121
 122 # handle PKG_CONFIG_PATH because we need it in our env, and we want to handle
 123 # wildcards; note that this logic means all setting _appends_ values, never
 124 # replacing; if that's a problem, we can revisit.
 125 sed -n "s/^[$st]*PKG_CONFIG_PATH[$st]*[+]*=[$st]*//p" $mft | \
 126   sed "s/[$st]*\$//" >> $mftepcp
 127 if test -s ./$mftepcp
 128 then
 129   # expand any wildcards and strip spaces, to make it a real PATH-like variable
 130   ( IFS=":${IFS-$st}"; for P in `cat ./$mftepcp`; do echo "$P"; done ) | xargs | sed "s/[$st]/:/g" >./$mftepcp2
 131   sed "s/^/PKG_CONFIG_PATH='/" < ./$mftepcp2 | sed "s/\$/'/" > ./$mftepcp
 132   . ./$mftepcp
 133   export PKG_CONFIG_PATH
 134   egrep -v "^[$st]*PKG_CONFIG_PATH[$st]*=" ./$mft > ./$mftt
 135   rm -f ./$mft
 136   (
 137     echo "# Collapsed PKG_CONFIG_PATH in build-prep:"
 138     sed "s/'//g" ./$mftepcp
 139     echo "# End of collapsed PKG_CONFIG_PATH"
 140     echo ""
 141     cat ./$mftt
 142   ) > ./$mft
 143   rm -f ./$mftt
 144 fi
 145 rm -f ./$mftepcp ./$mftepcp2
 146
 147 # handle pkg-config
 148 # beware portability of extended regexps with sed.
 149 egrep "^[$st]*(AUTH|LOOKUP)_[A-Z0-9_]*[$st]*=[$st]*" $mft | \
 150   sed "s/[$st]*=/='/" | \
 151   sed "s/\$/'/" > $mftt
 152 egrep "^[$st]*((USE_(OPENSSL|GNUTLS)_PC)|SUPPORT_TLS|USE_GNUTLS|PCRE_CONFIG|AVOID_GNUTLS_PKCS11)[$st]*=[$st]*" $mft | \
 153   sed "s/[$st]*=/='/" | \
 154   sed "s/\$/'/" >> $mftt
 155 if test -s $mftt
 156 then
 157   (
 158   echo "# pkg-config fixups"
 159   . ./$mftt
 160   for var in `cut -d = -f 1 < $mftt`; do
 161     case $var in
 162
 163       USE_*_PC)
 164         eval "pc_value=\"\$$var\""
 165         need_this=''
 166         need_core=''
 167         if [ ".$SUPPORT_TLS" = "." ]; then
 168           # no TLS, not referencing
 169           true
 170         elif [ ".$var" = ".USE_GNUTLS_PC" ] && [ ".$USE_GNUTLS" != "." ]; then
 171           need_this=t
 172           need_core="gnutls-special"
 173         elif [ ".$var" = ".USE_OPENSSL_PC" ] && [ ".$USE_GNUTLS" = "." ]; then
 174           need_this=t
 175           need_core=t
 176         fi
 177         if [ ".$need_this" != "." ]; then
 178           tls_include=`pkg-config --cflags $pc_value`
 179           if [ $? -ne 0 ]; then
 180             echo >&2 "*** Missing pkg-config for package $pc_value (for Exim $var build option)"
 181             exit 1
 182           fi
 183           tls_libs=`pkg-config --libs $pc_value`
 184           echo "TLS_INCLUDE=$tls_include"
 185           echo "TLS_LIBS=$tls_libs"
 186           # With hash.h pulling crypto into the core, we need to also handle that
 187           if [ ".$need_this" = ".t" ]; then
 188             echo "CFLAGS += $tls_include"
 189             echo "LDFLAGS += $tls_libs"
 190           elif [ ".$need_this" = ".gnutls-special" ]; then
 191             if pkg-config --atleast-version=2.10 gnutls ; then
 192               echo "CFLAGS += $tls_include"
 193               echo "LDFLAGS += $tls_libs"
 194             else
 195               echo "CFLAGS += `libgcrypt-config --cflags`"
 196               echo "LDFLAGS += `libgcrypt-config --libs`"
 197             fi
 198           fi
 199         fi
 200         ;;
 201
 202       *_PC)
 203         eval "pc_value=\"\$$var\""
 204         base=`echo $var | sed 's/_PC$//'`
 205         eval "basevalue=\"\$$base\""
 206         if [ ".$basevalue" = "." ]; then
 207           # not pulling in this module, _PC defined as default? Ignore
 208           true
 209         elif [ $basevalue = 2 ]; then
 210           # module; handled in scripts/lookups-Makefile
 211           true
 212         else
 213           # main binary
 214           cflags=`pkg-config --cflags $pc_value`
 215           if [ $? -ne 0 ]; then
 216             echo >&2 "*** Missing pkg-config for package $pc_value (for Exim $var build option)"
 217             exit 1
 218           fi
 219           libs=`pkg-config --libs $pc_value`
 220           if [ "$var" != "${var#LOOKUP_}" ]; then
 221             echo "LOOKUP_INCLUDE += $cflags"
 222             echo "LOOKUP_LIBS += $libs"
 223           elif [ "$var" != "${var#AUTH_}" ]; then
 224             echo "CFLAGS += $cflags"
 225             echo "AUTH_LIBS += $libs"
 226           else
 227             echo >&2 "Don't know how to handle pkg-config for $var"
 228           fi
 229         fi
 230         ;;
 231
 232       PCRE_CONFIG)
 233         case $PCRE_CONFIG in
 234           yes|YES|y|Y)
 235             cflags=`pcre-config --cflags`
 236             if [ $? -ne 0 ]; then
 237               echo >&2 "*** Missing pcre-config for regular expression support"
 238               exit 1
 239             fi
 240             libs=`pcre-config --libs`
 241             if [ ".$cflags" != "." ]; then
 242               echo "INCLUDE += $cflags"
 243             fi
 244             echo "PCRE_LIBS=$libs"
 245             ;;
 246         esac
 247         ;;
 248
 249       AVOID_GNUTLS_PKCS11)
 250         echo "$var=yes"
 251         ;;
 252
 253     esac
 254   done
 255   echo "# End of pkg-config fixups"
 256   echo
 257   ) >> $mft
 258   subexit=$?
 259   if [ $subexit -ne 0 ]; then
 260     exit $subexit
 261   fi
 262 fi
 263 rm -f $mftt
 264
 265 # make the lookups Makefile with the definitions
 266 # the auxiliary script generates $look_mf_post from $look_mf_pre
 267
 268 cp ../src/lookups/Makefile $look_mf_pre
 269 ../scripts/lookups-Makefile
 270
 271 # See if there is a definition of EXIM_PERL in what we have built so far.
 272 # If so, run Perl to find the default values for PERL_CC, PERL_CCOPTS,
 273 # and PERL_LIBS. These need to be put at the top of the Makefile, so we rename
 274 # what we have so far and then copy it afterwards. Use the value of PERL_COMMAND
 275 # if it has been defined.
 276
 277 EXIM_PERL=`grep EXIM_PERL $mft`
 278
 279 PERL_COMMAND=`grep PERL_COMMAND $mft | sed -e "\\$!d;s/^[$st]*PERL_COMMAND[$st]*=[$st]*//"`
 280 if [ "${PERL_COMMAND}" = "" ] ; then
 281   PERL_COMMAND='perl'
 282 fi
 283
 284 if [ "${EXIM_PERL}" != "" ] ; then
 285   testperl=`$PERL_COMMAND --version`
 286   if [ "$testperl" = "" ] ; then
 287     echo "*** EXIM_PERL is set, but '$PERL_COMMAND --version' failed"
 288     exit 1
 289   fi
 290
 291   EXTUTILS_EMBED_NOT_INSTALLED=`$PERL_COMMAND -MExtUtils::Embed -e ";" 2>&1`
 292   if [ "${EXTUTILS_EMBED_NOT_INSTALLED}" != "" ] ; then
 293     echo "Please install ExtUtils::Embed for $PERL_COMMAND"
 294     exit 1;
 295   fi
 296
 297   mv $mft $mftt
 298   echo "PERL_CC=`$PERL_COMMAND -MConfig -e 'print $Config{cc}'`" >>$mft
 299   echo "PERL_CCOPTS=`$PERL_COMMAND -MExtUtils::Embed -e ccopts`" >>$mft
 300   echo "PERL_LIBS=`$PERL_COMMAND -MExtUtils::Embed -e ldopts`" >>$mft
 301   echo "" >>$mft
 302   cat $mftt >> $mft
 303   rm -f $mftt
 304 fi
 305
 306 # Record the build variable in the Makefile.
 307
 308 echo "build=$build" >>$mft
 309 echo "" >>$mft
 310
 311 # Finally, join on the generic base make file, which contains the actual
 312 # rules and stuff.
 313
 314 echo "# From ../OS/Makefile-Base" >> $mft
 315 cat ../OS/Makefile-Base >> $mft || exit 1
 316
 317 # If the new makefile is the same as the existing one, say so, and just
 318 # update the timestamp. Otherwise remove the old and install the new.
 319
 320 if      [ -s $mf ] && cmp -s $mft $mf && [ -s $look_mf ] && cmp -s $look_mf_post $look_mf
 321 then    echo ">>> rebuilt $mf unchanged"
 322         echo " "
 323         touch $mf || exit
 324         rm -f $mft $look_mf_pre $look_mf_post
 325 elif    rm -f $mf $look_mf $look_mf_pre
 326         mv $mft $mf
 327         mv $look_mf_post $look_mf
 328 then    echo ">>> New $mf & $look_mf installed"
 329         echo '>>> Use "make makefile" if you need to force rebuilding of the makefile'
 330         echo " "
 331 else    echo " "
 332         echo "*** Failed to install $mf - see $mft"
 333         echo "    (or $look_mft)"
 334         echo " "
 335         exit 1;
 336 fi
 337
 338 # vim: set ft=sh :
 339 # End of Configure-Makefile