ld/configure.in

   1 dnl Process this file with autoconf to produce a configure script
   2 dnl
   3 AC_PREREG(2.0)
   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
  15 AC_CONFIG_HEADER(config.h:config.in)
  16
  17 AC_CONFIG_AUX_DIR(`cd $srcdir/..; pwd`)
  18 AC_CANONICAL_SYSTEM
  19 if test -z "$target" ; then
  20     AC_MSG_ERROR(Unrecognized target system type; please check config.sub.)
  21 fi
  22 if test -z "$host" ; then
  23     AC_MSG_ERROR(Unrecognized host system type; please check config.sub.)
  24 fi
  25 AC_ARG_PROGRAM
  26
  27 # host-specific stuff:
  28
  29 . ${srcdir}/configure.host
  30
  31 AC_PROG_CC
  32 AC_SUBST(CFLAGS)
  33 AC_SUBST(HDEFINES)
  34 AC_SUBST(HOSTING_CRT0)
  35 AC_SUBST(HOSTING_LIBS)
  36 AC_SUBST(NATIVE_LIB_DIRS)
  37
  38 AC_CHECK_HEADERS(string.h strings.h stdlib.h unistd.h)
  39 AC_CHECK_FUNCS(sbrk)
  40
  41 BFD_BINARY_FOPEN
  42
  43 # target-specific stuff:
  44
  45 # Canonicalize the secondary target names.
  46 if test -n "$enable_targets"; then
  47     for targ in `echo $enable_targets | sed 's/,/ /g'`
  48     do
  49         result=`$ac_config_sub $targ 2>/dev/null`
  50         if test -n "$result"; then
  51             canon_targets="$canon_targets $result"
  52         else
  53             # Allow targets that config.sub doesn't recognize, like "all".
  54             canon_targets="$canon_targets $targ"
  55         fi
  56     done
  57 fi
  58
  59 all_targets=false
  60 EMUL=
  61 all_emuls=
  62
  63 for targ in $target $canon_targets
  64 do
  65     if test "x$targ" = "xall"; then
  66         all_targets=true
  67     else
  68         . ${srcdir}/configure.tgt
  69
  70         if test "x$targ" = "x$target"; then
  71             EMUL=${targ_emul}
  72         fi
  73
  74         all_emuls="${all_emuls} ${targ_emul} ${targ_extra_emuls}"
  75     fi
  76 done
  77
  78 AC_SUBST(EMUL)
  79
  80 if test x${all_targets} = xfalse; then
  81     # uniq the list.
  82     f=""
  83     for i in $all_emuls ; do
  84         case " $f " in
  85         *" e$i.o "*) ;;
  86         *) f="$f e$i.o" ;;
  87         esac
  88     done
  89
  90     EMULATION_OFILES="$f"
  91
  92 else    # all_targets is true
  93     EMULATION_OFILES='$(ALL_EMULATIONS)'
  94 fi      # all_targets is true
  95
  96 AC_SUBST(EMULATION_OFILES)
  97
  98 AC_OUTPUT(Makefile,
  99 [case x$CONFIG_HEADERS in xconfig.h:config.in) echo > stamp-h ;; esac])