gold/configure.ac

   1 dnl Process this file with autoconf to produce a configure script.
   2
   3 AC_PREREQ(2.59)
   4 AC_INIT
   5 AC_CONFIG_SRCDIR([gold.cc])
   6
   7 AC_CANONICAL_TARGET
   8
   9 AM_INIT_AUTOMAKE(gold, 0.1)
  10
  11 AM_CONFIG_HEADER(config.h:config.in)
  12
  13 AC_ARG_ENABLE([targets],
  14 [  --enable-targets        alternative target configurations],
  15 [case "${enableval}" in
  16   yes | "")
  17     AC_MSG_ERROR([--enable-targets option must specify target names or 'all'])
  18     ;;
  19   no)
  20     enable_targets=
  21     ;;
  22   *)
  23     enable_targets=$enableval
  24     ;;
  25 esac],
  26 [# For now, enable all targets by default
  27  enable_targets=all
  28 ])
  29
  30 # Canonicalize the enabled targets.
  31 if test -n "$enable_targets"; then
  32   for targ in `echo $enable_targets | sed -e 's/,/ /g'`; do
  33     result=`$ac_config_sub $targ 2>/dev/null`
  34     if test -n "$result"; then
  35       canon_targets="$canon_targets $result"
  36     else
  37       # Permit unrecognized target names, like "all".
  38       canon_targets="$canon_targets $targ"
  39     fi
  40   done
  41 fi
  42
  43 # See which specific instantiations we need.
  44 targetobjs=
  45 all_targets=
  46 for targ in $target $canon_targets; do
  47   targ_32_little=
  48   targ_32_big=
  49   targ_64_little=
  50   targ_64_big=
  51   if test "$targ" = "all"; then
  52     targ_32_little=yes
  53     targ_32_big=yes
  54     targ_64_little=yes
  55     targ_64_big=yes
  56     all_targets=yes
  57   else
  58     case "$targ" in
  59     i?86-*)
  60       targ_32_little=yes
  61       targetobjs="$targetobjs i386.\$(OBJEXT)"
  62       ;;
  63     x86_64-*)
  64       targ_64_little=yes
  65       targetobjs="$targetobjs x86_64.\$(OBJEXT)"
  66       ;;
  67     *)
  68       AC_MSG_ERROR("unsupported target $targ")
  69       ;;
  70     esac
  71   fi
  72 done
  73
  74 if test -n "$targ_32_little"; then
  75   AC_DEFINE(HAVE_TARGET_32_LITTLE, 1,
  76               [Define to support 32-bit little-endian targets])
  77 fi
  78 if test -n "$targ_32_big"; then
  79   AC_DEFINE(HAVE_TARGET_32_BIG, 1,
  80               [Define to support 32-bit big-endian targets])
  81 fi
  82 if test -n "$targ_64_little"; then
  83   AC_DEFINE(HAVE_TARGET_64_LITTLE, 1,
  84               [Define to support 64-bit little-endian targets])
  85 fi
  86 if test -n "$targ_64_big"; then
  87   AC_DEFINE(HAVE_TARGET_64_BIG, 1,
  88               [Define to support 64-bit big-endian targets])
  89 fi
  90
  91 if test -n "$all_targets"; then
  92   TARGETOBJS='$(ALL_TARGETOBJS)'
  93 else
  94   TARGETOBJS="$targetobjs"
  95 fi
  96 AC_SUBST(TARGETOBJS)
  97
  98 AC_PROG_CC
  99 AC_PROG_CXX
 100 AC_PROG_YACC
 101 AC_PROG_RANLIB
 102 AC_PROG_INSTALL
 103 AC_PROG_LN_S
 104 ZW_GNU_GETTEXT_SISTER_DIR
 105 AM_PO_SUBDIRS
 106
 107 AC_C_BIGENDIAN
 108
 109 AC_EXEEXT
 110
 111 AM_CONDITIONAL(NATIVE_LINKER,
 112   test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias")
 113 AM_CONDITIONAL(GCC, test "$GCC" = yes)
 114
 115 AM_BINUTILS_WARNINGS
 116
 117 WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//'`
 118 AC_SUBST(WARN_CXXFLAGS)
 119
 120 dnl Force support for large files by default.  This may need to be
 121 dnl host dependent.  If build == host, we can check getconf LFS_CFLAGS.
 122 LFS_CXXFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
 123 AC_SUBST(LFS_CXXFLAGS)
 124
 125 AC_REPLACE_FUNCS(pread)
 126
 127 AC_LANG_PUSH(C++)
 128
 129 AC_CHECK_HEADERS(tr1/unordered_set tr1/unordered_map)
 130 AC_CHECK_HEADERS(ext/hash_map ext/hash_set)
 131
 132 dnl Test whether the compiler can specify a member templates to call.
 133 AC_COMPILE_IFELSE([
 134 class c { public: template<int i> void fn(); };
 135 template<int i> void foo(c cv) { cv.fn<i>(); }
 136 template void foo<1>(c cv);],
 137 [AC_DEFINE(HAVE_MEMBER_TEMPLATE_SPECIFICATIONS, [],
 138   [Whether the C++ compiler can call a template member with no arguments])])
 139
 140 AC_LANG_POP(C++)
 141
 142 AM_MAINTAINER_MODE
 143
 144 AC_OUTPUT(Makefile testsuite/Makefile po/Makefile.in:po/Make-in)