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