src/scripts/Configure-Makefile

   1 #! /bin/sh
   2
   3 # Shell script to build Makefile in a build directory. It must be called
   4 # from inside the directory. It does its own checking of when to rebuild; it
   5 # just got too horrendous to get it right in "make", because of the optionally
   6 # existing configuration files.
   7
   8
   9 # First off, get the OS type, and check that there is a make file for it.
  10
  11 ostype=`../scripts/os-type -generic` || exit 1
  12
  13 if [ ! -r ../OS/Makefile-$ostype ] ; then
  14   echo ""
  15   echo "*** Sorry - operating system $ostype is not supported"
  16   echo "*** See OS/Makefile-* for supported systems" 1>&2
  17   echo ""
  18   exit 1
  19 fi
  20
  21 # We also need the architecture type, in order to test for any architecture-
  22 # specific configuration files.
  23
  24 archtype=`../scripts/arch-type` || exit 1
  25
  26 # Now test for either the non-existence of Makefile, or for any of its
  27 # components being newer. Note that the "newer" script gives the right
  28 # answer (for our purposes) when the first file is non-existent.
  29
  30 editme=../Local/Makefile
  31 rebuild=yes
  32
  33 if [ -f Makefile ] ; then
  34   rebuild=no
  35   if ../scripts/newer $editme Makefile || \
  36      ../scripts/newer $editme-$ostype Makefile || \
  37      ../scripts/newer $editme-$archtype Makefile || \
  38      ../scripts/newer $editme-$ostype-$archtype Makefile || \
  39      ../scripts/newer ../scripts/Configure-Makefile Makefile || \
  40      ../scripts/newer ../OS/Makefile-Base Makefile || \
  41      ../scripts/newer ../OS/Makefile-Default Makefile
  42   then
  43     rebuild=yes
  44   fi
  45 fi
  46
  47 # If the "build" variable is set it means that a build name was explicitly
  48 # given. Arrange to pick up a build-specific configuration file.
  49
  50 if [ "X$build" != "X" ] ; then
  51   mfb=Local/Makefile-$build
  52   if ../scripts/newer $editme-$build Makefile ; then
  53     rebuild=yes
  54   fi
  55 else
  56   mfb=
  57 fi
  58
  59
  60 # If Makefile is up-to-date, no need to rebuild it.
  61
  62 if [ $rebuild = no ] ; then
  63   echo "\`Makefile' is up to date."
  64   echo " "
  65   exit
  66 fi
  67
  68 # Makefile needs to be rebuilt in the current directory by joining
  69 # the generic default makefile, the OS base makefile, and then local
  70 # generic, OS-specific, architecture-specific, and OS+architecture-specific
  71 # makefiles, if they exist. These files all contain macro definitions, with
  72 # later definitions overriding earlier ones. Make a temporary file first, in
  73 # case things go wrong. A second temporary is needed for sorting out the
  74 # default Perl stuff. Use short macro names to save typing.
  75
  76 mf=Makefile
  77 mft=$mf-t
  78 mftt=$mf-tt
  79
  80 look_mf=lookups/Makefile
  81 look_mf_pre=${look_mf}.predynamic
  82 look_mf_post=${look_mf}.postdynamic
  83
  84 # Ensure the temporary does not exist and start the new one by setting
  85 # the OSTYPE and ARCHTYPE variables.
  86
  87 rm -f $mft $mftt $look_mf-t
  88 (echo "OSTYPE=$ostype"; echo "ARCHTYPE=$archtype"; echo "") > $mft || exit 1
  89
  90 # Now concatenate the files to the temporary file. Copy the files using sed to
  91 # remove comments, blank lines, and trailing white space.
  92
  93 # BEWARE: a tab character is needed in the sed command below. It has had
  94 # a nasty tendency to get lost in the past, causing a problem if a tab has
  95 # actually been present in one of the files. Use a variable to hold a space
  96 # and a tab to keep the tab in one place.
  97
  98 st='     '
  99
 100 for f in OS/Makefile-Default \
 101          OS/Makefile-$ostype \
 102          Local/Makefile \
 103          Local/Makefile-$ostype \
 104          Local/Makefile-$archtype \
 105          Local/Makefile-$ostype-$archtype \
 106          $mfb
 107 do   if test -r ../$f
 108      then   echo "# From $f"
 109             sed "/^#/d;/^[$st]*\$/d;s/[$st]*\$//" ../$f || exit 1
 110             echo "# End of $f"
 111             echo ""
 112      fi
 113 done >> $mft || exit 1
 114
 115 # handle pkg-config
 116 # beware portability of extended regexps with sed.
 117
 118 egrep "^[$st]*(AUTH|LOOKUP)_[A-Z0-9_]*[$st]*=[$st]*" $mft | \
 119   sed "s/[$st]*=/='/" | \
 120   sed "s/\$/'/" > $mftt
 121 egrep "^[$st]*((USE_(OPENSSL|GNUTLS)_PC)|SUPPORT_TLS|USE_GNUTLS|PCRE_CONFIG)[$st]*=[$st]*" $mft | \
 122   sed "s/[$st]*=/='/" | \
 123   sed "s/\$/'/" >> $mftt
 124 if test -s $mftt
 125 then
 126   (
 127   echo "# pkg-config fixups"
 128   . ./$mftt
 129   for var in `cut -d = -f 1 < $mftt`; do
 130     case $var in
 131
 132       USE_*_PC)
 133         eval "pc_value=\"\$$var\""
 134         need_this=''
 135         if [ ".$SUPPORT_TLS" = "." ]; then
 136           # no TLS, not referencing
 137           true
 138         elif [ ".$var" = ".USE_GNUTLS_PC" ] && [ ".$USE_GNUTLS" != "." ]; then
 139           need_this=t
 140         elif [ ".$var" = ".USE_OPENSSL_PC" ] && [ ".$USE_GNUTLS" = "." ]; then
 141           need_this=t
 142         fi
 143         if [ ".$need_this" != "." ]; then
 144           tls_include=`pkg-config --cflags $pc_value`
 145           tls_libs=`pkg-config --libs $pc_value`
 146           echo "TLS_INCLUDE=$tls_include"
 147           echo "TLS_LIBS=$tls_libs"
 148         fi
 149         ;;
 150
 151       *_PC)
 152         eval "pc_value=\"\$$var\""
 153         base=`echo $var | sed 's/_PC$//'`
 154         eval "basevalue=\"\$$base\""
 155         if [ ".$basevalue" = "." ]; then
 156           # not pulling in this module, _PC defined as default? Ignore
 157           true
 158         elif [ $basevalue = 2 ]; then
 159           # module; handled in scripts/lookups-Makefile
 160           true
 161         else
 162           # main binary
 163           cflags=`pkg-config --cflags $pc_value`
 164           libs=`pkg-config --libs $pc_value`
 165           if [ "$var" != "${var#LOOKUP_}" ]; then
 166             echo "LOOKUP_INCLUDE += $cflags"
 167             echo "LOOKUP_LIBS += $libs"
 168           elif [ "$var" != "${var#AUTH_}" ]; then
 169             echo "CFLAGS += $cflags"
 170             echo "AUTH_LIBS += $libs"
 171           else
 172             echo >&2 "Don't know how to handle pkg-config for $var"
 173           fi
 174         fi
 175         ;;
 176
 177       PCRE_CONFIG)
 178         case $PCRE_CONFIG in
 179           yes|YES|y|Y)
 180             cflags=`pcre-config --cflags`
 181             libs=`pcre-config --libs`
 182             if [ ".$cflags" != "." ]; then
 183               echo "INCLUDE += $cflags"
 184             fi
 185             echo "PCRE_LIBS=$libs"
 186             ;;
 187         esac
 188         ;;
 189
 190     esac
 191   done
 192   echo "# End of pkg-config fixups"
 193   echo
 194   ) >> $mft
 195 fi
 196 rm -f $mftt
 197
 198 # make the lookups Makefile with the definitions
 199 # the auxiliary script generates $look_mf_post from $look_mf_pre
 200
 201 cp ../src/lookups/Makefile $look_mf_pre
 202 ../scripts/lookups-Makefile
 203
 204 # See if there is a definition of EXIM_PERL in what we have built so far.
 205 # If so, run Perl to find the default values for PERL_CC, PERL_CCOPTS,
 206 # and PERL_LIBS. These need to be put at the top of the Makefile, so we rename
 207 # what we have so far and then copy it afterwards. Use the value of PERL_COMMAND
 208 # if it has been defined.
 209
 210 EXIM_PERL=`grep EXIM_PERL $mft`
 211
 212 PERL_COMMAND=`grep PERL_COMMAND $mft | sed -e "\\$!d;s/^[$st]*PERL_COMMAND[$st]*=[$st]*//"`
 213 if [ "${PERL_COMMAND}" = "" ] ; then
 214   PERL_COMMAND='perl'
 215 fi
 216
 217 if [ "${EXIM_PERL}" != "" ] ; then
 218   testperl=`$PERL_COMMAND --version`
 219   if [ "$testperl" = "" ] ; then
 220     echo "*** EXIM_PERL is set, but '$PERL_COMMAND --version' failed"
 221     exit 1
 222   fi
 223
 224   EXTUTILS_EMBED_NOT_INSTALLED=`$PERL_COMMAND -MExtUtils::Embed -e ";" 2>&1`
 225   if [ "${EXTUTILS_EMBED_NOT_INSTALLED}" != "" ] ; then
 226     echo "Please install ExtUtils::Embed for $PERL_COMMAND"
 227     exit 1;
 228   fi
 229
 230   mv $mft $mftt
 231   echo "PERL_CC=`$PERL_COMMAND -MConfig -e 'print $Config{cc}'`" >>$mft
 232   echo "PERL_CCOPTS=`$PERL_COMMAND -MExtUtils::Embed -e ccopts`" >>$mft
 233   echo "PERL_LIBS=`$PERL_COMMAND -MExtUtils::Embed -e ldopts`" >>$mft
 234   echo "" >>$mft
 235   cat $mftt >> $mft
 236   rm -f $mftt
 237 fi
 238
 239 # Record the build variable in the Makefile.
 240
 241 echo "build=$build" >>$mft
 242 echo "" >>$mft
 243
 244 # Finally, join on the generic base make file, which contains the actual
 245 # rules and stuff.
 246
 247 echo "# From ../OS/Makefile-Base" >> $mft
 248 cat ../OS/Makefile-Base >> $mft || exit 1
 249
 250 # If the new makefile is the same as the existing one, say so, and just
 251 # update the timestamp. Otherwise remove the old and install the new.
 252
 253 if      [ -s $mf ] && cmp -s $mft $mf && [ -s $look_mf ] && cmp -s $look_mf_post $look_mf
 254 then    echo ">>> rebuilt $mf unchanged"
 255         echo " "
 256         touch $mf || exit
 257         rm -f $mft $look_mf_pre $look_mf_post
 258 elif    rm -f $mf $look_mf $look_mf_pre
 259         mv $mft $mf
 260         mv $look_mf_post $look_mf
 261 then    echo ">>> New $mf & $look_mf installed"
 262         echo '>>> Use "make makefile" if you need to force rebuilding of the makefile'
 263         echo " "
 264 else    echo " "
 265         echo "*** Failed to install $mf - see $mft"
 266         echo "    (or $look_mft)"
 267         echo " "
 268         exit 1;
 269 fi
 270
 271 # vim: set ft=sh :
 272 # End of Configure-Makefile