gold/configure.ac

   1 dnl Process this file with autoconf to produce a configure script.
   2
   3 AC_PREREQ(2.59)
   4
   5 AC_INIT(gold, 0.1)
   6 AC_CONFIG_SRCDIR(gold.cc)
   7
   8 AC_CANONICAL_TARGET
   9
  10 AM_INIT_AUTOMAKE
  11
  12 AM_CONFIG_HEADER(config.h:config.in)
  13
  14 AC_ARG_WITH(sysroot,
  15 [  --with-sysroot[=DIR]    search for usr/lib et al within DIR],
  16 [sysroot=$withval], [sysroot=no])
  17
  18 if test "$sysroot" = "yes"; then
  19   sysroot='${exec_prefix}/${target_alias}/sys-root'
  20 elif test "$sysroot" = "no"; then
  21   sysroot=
  22 fi
  23
  24 sysroot_relocatable=0
  25 if test -n "$sysroot"; then
  26   case "sysroot" in
  27     "${prefix}" | "${prefix}/"* | \
  28     "${exec_prefix}" | "${exec_prefix}/"* | \
  29     '${prefix}' | '${prefix}/'*| \
  30     '${exec_prefix}' | '${exec_prefix}/'*)
  31       sysroot_relocatable=1
  32       ;;
  33   esac
  34 fi
  35
  36 AC_DEFINE_UNQUOTED(TARGET_SYSTEM_ROOT, "$sysroot",
  37   [System root for target files])
  38 AC_DEFINE_UNQUOTED(TARGET_SYSTEM_ROOT_RELOCATABLE, $sysroot_relocatable,
  39   [Whether the system root can be relocated])
  40
  41 AC_ARG_ENABLE([targets],
  42 [  --enable-targets        alternative target configurations],
  43 [case "${enableval}" in
  44   yes | "")
  45     AC_MSG_ERROR([--enable-targets option must specify target names or 'all'])
  46     ;;
  47   no)
  48     enable_targets=
  49     ;;
  50   *)
  51     enable_targets=$enableval
  52     ;;
  53 esac],
  54 [# For now, enable all targets by default
  55  enable_targets=all
  56 ])
  57
  58 # Canonicalize the enabled targets.
  59 if test -n "$enable_targets"; then
  60   for targ in `echo $enable_targets | sed -e 's/,/ /g'`; do
  61     result=`$ac_config_sub $targ 2>/dev/null`
  62     if test -n "$result"; then
  63       canon_targets="$canon_targets $result"
  64     else
  65       # Permit unrecognized target names, like "all".
  66       canon_targets="$canon_targets $targ"
  67     fi
  68   done
  69 fi
  70
  71 # See which specific instantiations we need.
  72 targetobjs=
  73 all_targets=
  74 for targ in $target $canon_targets; do
  75   targ_32_little=
  76   targ_32_big=
  77   targ_64_little=
  78   targ_64_big=
  79   if test "$targ" = "all"; then
  80     targ_32_little=yes
  81     targ_32_big=yes
  82     targ_64_little=yes
  83     targ_64_big=yes
  84     all_targets=yes
  85   else
  86     case "$targ" in
  87     i?86-*)
  88       targ_32_little=yes
  89       targetobjs="$targetobjs i386.\$(OBJEXT)"
  90       ;;
  91     x86_64-*)
  92       targ_64_little=yes
  93       targetobjs="$targetobjs x86_64.\$(OBJEXT)"
  94       ;;
  95     *)
  96       AC_MSG_ERROR("unsupported target $targ")
  97       ;;
  98     esac
  99   fi
 100 done
 101
 102 if test -n "$targ_32_little"; then
 103   AC_DEFINE(HAVE_TARGET_32_LITTLE, 1,
 104               [Define to support 32-bit little-endian targets])
 105 fi
 106 if test -n "$targ_32_big"; then
 107   AC_DEFINE(HAVE_TARGET_32_BIG, 1,
 108               [Define to support 32-bit big-endian targets])
 109 fi
 110 if test -n "$targ_64_little"; then
 111   AC_DEFINE(HAVE_TARGET_64_LITTLE, 1,
 112               [Define to support 64-bit little-endian targets])
 113 fi
 114 if test -n "$targ_64_big"; then
 115   AC_DEFINE(HAVE_TARGET_64_BIG, 1,
 116               [Define to support 64-bit big-endian targets])
 117 fi
 118
 119 if test -n "$all_targets"; then
 120   TARGETOBJS='$(ALL_TARGETOBJS)'
 121 else
 122   TARGETOBJS="$targetobjs"
 123 fi
 124 AC_SUBST(TARGETOBJS)
 125
 126 AC_PROG_CC
 127 AC_PROG_CXX
 128 AC_PROG_YACC
 129 AC_PROG_RANLIB
 130 AC_PROG_INSTALL
 131 AC_PROG_LN_S
 132 ZW_GNU_GETTEXT_SISTER_DIR
 133 AM_PO_SUBDIRS
 134
 135 AC_C_BIGENDIAN
 136
 137 AC_EXEEXT
 138
 139 AM_CONDITIONAL(NATIVE_LINKER,
 140   test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias")
 141 AM_CONDITIONAL(GCC, test "$GCC" = yes)
 142
 143 dnl Some architectures do not support taking pointers of functions
 144 dnl defined in shared libraries except in -fPIC mode.  We need to
 145 dnl tell the unittest framework if we're compiling for one of those
 146 dnl targets, so it doesn't try to run the tests that do that.
 147 AM_CONDITIONAL(FN_PTRS_IN_SO_WITHOUT_PIC, [
 148   case $target_cpu in
 149     i?86) true;;
 150     x86_64) false;;
 151     *) true;;
 152   esac])
 153
 154 dnl Test for __thread support.
 155 AC_COMPILE_IFELSE([__thread int i = 1;], [tls=yes], [tls=no])
 156 AM_CONDITIONAL(TLS, test "$tls" = "yes")
 157
 158 AM_BINUTILS_WARNINGS
 159
 160 WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//'`
 161 AC_SUBST(WARN_CXXFLAGS)
 162
 163 dnl Force support for large files by default.  This may need to be
 164 dnl host dependent.  If build == host, we can check getconf LFS_CFLAGS.
 165 LFS_CXXFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
 166 AC_SUBST(LFS_CXXFLAGS)
 167
 168 AC_REPLACE_FUNCS(pread)
 169
 170 AC_LANG_PUSH(C++)
 171
 172 AC_CHECK_HEADERS(tr1/unordered_set tr1/unordered_map)
 173 AC_CHECK_HEADERS(ext/hash_map ext/hash_set)
 174
 175 dnl Test whether the compiler can specify a member templates to call.
 176 AC_COMPILE_IFELSE([
 177 class c { public: template<int i> void fn(); };
 178 template<int i> void foo(c cv) { cv.fn<i>(); }
 179 template void foo<1>(c cv);],
 180 [AC_DEFINE(HAVE_MEMBER_TEMPLATE_SPECIFICATIONS, [],
 181   [Whether the C++ compiler can call a template member with no arguments])])
 182
 183 AC_LANG_POP(C++)
 184
 185 AM_MAINTAINER_MODE
 186
 187 AC_OUTPUT(Makefile testsuite/Makefile po/Makefile.in:po/Make-in)