src/scripts/Configure-Makefile

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