ld/configure.in

   1 dnl Process this file with autoconf to produce a configure script
   2 dnl
   3 AC_PREREG(2.5)
   4 AC_INIT(ldmain.c)
   5
   6 AC_ARG_ENABLE(targets,
   7 [  --enable-targets        alternative target configurations],
   8 [case "${enableval}" in
   9   yes | "") AC_ERROR(enable-targets option must specify target names or 'all')
  10             ;;
  11   no)       enable_targets= ;;
  12   *)        enable_targets=$enableval ;;
  13 esac])dnl
  14 AC_ARG_ENABLE(shared,
  15 [  --enable-shared         build shared BFD library],
  16 [case "${enableval}" in
  17   yes) shared=true ;;
  18   no)  shared=false ;;
  19   *bfd*) shared=true ;;
  20   *) shared=false ;;
  21 esac])dnl
  22 AC_ARG_ENABLE(64-bit-bfd,
  23 [  --enable-64-bit-bfd     64-bit support (on hosts with narrower word sizes)],
  24 [case "${enableval}" in
  25   yes)  want64=true  ;;
  26   no)   want64=false ;;
  27   *)    AC_MSG_ERROR(bad value ${enableval} for 64-bit-bfd option) ;;
  28 esac],[want64=false])dnl
  29
  30 AC_CONFIG_HEADER(config.h:config.in)
  31
  32 AC_CONFIG_AUX_DIR(`cd $srcdir/..; pwd`)
  33 AC_CANONICAL_SYSTEM
  34 if test -z "$target" ; then
  35     AC_MSG_ERROR(Unrecognized target system type; please check config.sub.)
  36 fi
  37 if test -z "$host" ; then
  38     AC_MSG_ERROR(Unrecognized host system type; please check config.sub.)
  39 fi
  40 AC_ARG_PROGRAM
  41
  42 # host-specific stuff:
  43
  44 AC_PROG_CC
  45 AC_PROG_INSTALL
  46 CY_CYGWIN32
  47 CY_EXEEXT
  48
  49 . ${srcdir}/configure.host
  50
  51 AC_SUBST(HLDFLAGS)
  52 AC_SUBST(HLDENV)
  53 AC_SUBST(RPATH_ENVVAR)
  54 AC_SUBST(HDEFINES)
  55 AC_SUBST(HOSTING_CRT0)
  56 AC_SUBST(HOSTING_LIBS)
  57 AC_SUBST(NATIVE_LIB_DIRS)
  58
  59 # For most hosts we can use a simple definition to pick up the BFD and
  60 # opcodes libraries.  However, if we are building shared libraries, we
  61 # need to handle some hosts specially.
  62 BFDLIB='-L../bfd -lbfd'
  63 case "${host}" in
  64 *-*-sunos*)
  65   # On SunOS, we must link against the name we are going to install,
  66   # not -lbfd, since SunOS does not support SONAME.
  67   if test "${shared}" = "true"; then
  68     BFDLIB='-L../bfd -l`echo bfd | sed '"'"'$(program_transform_name)'"'"'`'
  69   fi
  70   ;;
  71 alpha*-*-osf*)
  72   # On Alpha OSF/1, the native linker searches all the -L
  73   # directories for any LIB.so files, and only then searches for any
  74   # LIB.a files.  That means that if there is an installed
  75   # libbfd.so, but this build is not done with --enable-shared, the
  76   # link will wind up being against the install libbfd.so rather
  77   # than the newly built libbfd.  To avoid this, we must explicitly
  78   # link against libbfd.a when --enable-shared is not used.
  79   if test "${shared}" != "true"; then
  80     BFDLIB='../bfd/libbfd.a'
  81   fi
  82   ;;
  83 esac
  84 AC_SUBST(BFDLIB)
  85
  86 AC_CHECK_HEADERS(string.h strings.h stdlib.h unistd.h)
  87 AC_CHECK_FUNCS(sbrk)
  88 AC_HEADER_DIRENT
  89
  90 BFD_BINARY_FOPEN
  91
  92 BFD_NEED_DECLARATION(strstr)
  93 BFD_NEED_DECLARATION(free)
  94 BFD_NEED_DECLARATION(sbrk)
  95 BFD_NEED_DECLARATION(getenv)
  96
  97 # target-specific stuff:
  98
  99 all_targets=
 100 EMUL=
 101 all_emuls=
 102 TDIRS=
 103
 104 for targ_alias in `echo $target_alias $enable_targets | sed 's/,/ /g'`
 105 do
 106   if test "$targ_alias" = "all"; then
 107     all_targets=true
 108   else
 109     # Canonicalize the secondary target names.
 110     result=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $targ_alias 2>/dev/null`
 111     if test -n "$result"; then
 112         targ=$result
 113     else
 114         targ=$targ_alias
 115     fi
 116
 117     . ${srcdir}/configure.tgt
 118
 119     if test "$targ" = "$target"; then
 120       EMUL=$targ_emul
 121     fi
 122
 123     for i in $targ_emul $targ_extra_emuls; do
 124         case " $all_emuls " in
 125         *" e${i}.o "*) ;;
 126         *)
 127           all_emuls="$all_emuls e${i}.o"
 128           eval result=\$tdir_$i
 129           test -z "$result" && result=$targ_alias
 130           TDIRS="$TDIRS\\
 131 tdir_$i=$result"
 132           ;;
 133         esac
 134     done
 135   fi
 136 done
 137
 138 AC_SUBST(EMUL)
 139 AC_SUBST(TDIRS)
 140
 141 dnl FIXME: We will build a 64 bit BFD for a 64 bit host or a 64 bit
 142 dnl target, and in those cases we should also build the 64 bit
 143 dnl emulations.
 144 if test x${all_targets} = xtrue; then
 145   if test x${want64} = xtrue; then
 146     EMULATION_OFILES='$(ALL_EMULATIONS) $(ALL_64_EMULATIONS)'
 147   else
 148     EMULATION_OFILES='$(ALL_EMULATIONS)'
 149   fi
 150 else
 151   EMULATION_OFILES=$all_emuls
 152 fi
 153 AC_SUBST(EMULATION_OFILES)
 154
 155 AC_OUTPUT(Makefile,
 156 [case x$CONFIG_HEADERS in xconfig.h:config.in) echo > stamp-h ;; esac])