1 dnl Process this file with autoconf to produce a configure script.
6 AC_CONFIG_SRCDIR(gold.cc)
12 AM_CONFIG_HEADER(config.h:config.in)
15 [ --with-sysroot[=DIR] search for usr/lib et al within DIR],
16 [sysroot=$withval], [sysroot=no])
18 if test "$sysroot" = "yes"; then
19 sysroot='${exec_prefix}/${target_alias}/sys-root'
20 elif test "$sysroot" = "no"; then
25 if test -n "$sysroot"; then
27 "${prefix}" | "${prefix}/"* | \
28 "${exec_prefix}" | "${exec_prefix}/"* | \
29 '${prefix}' | '${prefix}/'*| \
30 '${exec_prefix}' | '${exec_prefix}/'*)
36 AC_DEFINE_UNQUOTED(TARGET_SYSTEM_ROOT, "$sysroot",
37 [System root for target files])
38 AC_DEFINE_UNQUOTED(TARGET_SYSTEM_ROOT_RELOCATABLE, $sysroot_relocatable,
39 [Whether the system root can be relocated])
41 dnl For now threads are a configure time option.
42 AC_ARG_ENABLE([threads],
43 [ --enable-threads multi-threaded linking],
44 [case "${enableval}" in
45 yes | "") threads=yes ;;
50 if test "$threads" = "yes"; then
51 AC_DEFINE(ENABLE_THREADS, 1,
52 [Define to do multi-threaded linking])
54 AM_CONDITIONAL(THREADS, test "$threads" = "yes")
56 AC_ARG_ENABLE([targets],
57 [ --enable-targets alternative target configurations],
58 [case "${enableval}" in
60 AC_MSG_ERROR([--enable-targets option must specify target names or 'all'])
66 enable_targets=$enableval
69 [# For now, enable all targets by default
73 # Canonicalize the enabled targets.
74 if test -n "$enable_targets"; then
75 for targ in `echo $enable_targets | sed -e 's/,/ /g'`; do
76 result=`$ac_config_sub $targ 2>/dev/null`
77 if test -n "$result"; then
78 canon_targets="$canon_targets $result"
80 # Permit unrecognized target names, like "all".
81 canon_targets="$canon_targets $targ"
86 # See which specific instantiations we need.
89 for targ in $target $canon_targets; do
94 if test "$targ" = "all"; then
104 targetobjs="$targetobjs i386.\$(OBJEXT)"
108 targetobjs="$targetobjs x86_64.\$(OBJEXT)"
111 AC_MSG_ERROR("unsupported target $targ")
117 if test -n "$targ_32_little"; then
118 AC_DEFINE(HAVE_TARGET_32_LITTLE, 1,
119 [Define to support 32-bit little-endian targets])
121 if test -n "$targ_32_big"; then
122 AC_DEFINE(HAVE_TARGET_32_BIG, 1,
123 [Define to support 32-bit big-endian targets])
125 if test -n "$targ_64_little"; then
126 AC_DEFINE(HAVE_TARGET_64_LITTLE, 1,
127 [Define to support 64-bit little-endian targets])
129 if test -n "$targ_64_big"; then
130 AC_DEFINE(HAVE_TARGET_64_BIG, 1,
131 [Define to support 64-bit big-endian targets])
134 if test -n "$all_targets"; then
135 TARGETOBJS='$(ALL_TARGETOBJS)'
137 TARGETOBJS="$targetobjs"
147 ZW_GNU_GETTEXT_SISTER_DIR
154 AM_CONDITIONAL(NATIVE_LINKER,
155 test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias")
156 AM_CONDITIONAL(GCC, test "$GCC" = yes)
158 dnl Some architectures do not support taking pointers of functions
159 dnl defined in shared libraries except in -fPIC mode. We need to
160 dnl tell the unittest framework if we're compiling for one of those
161 dnl targets, so it doesn't try to run the tests that do that.
162 AM_CONDITIONAL(FN_PTRS_IN_SO_WITHOUT_PIC, [
169 dnl Test for __thread support.
170 AC_CACHE_CHECK([for thread support], [gold_cv_c_thread],
171 [AC_COMPILE_IFELSE([__thread int i = 1;],
172 [gold_cv_c_thread=yes], [gold_cv_c_thread=no])])
174 AM_CONDITIONAL(TLS, test "$gold_cv_c_thread" = "yes")
176 dnl On GNU/Linux TLS in static programs only works when using glibc
178 AC_CACHE_CHECK([for glibc >= 2.4], [gold_cv_lib_glibc24],
180 #include <features.h>
181 #if !defined __GLIBC__
183 #elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 4)
186 ], [gold_cv_lib_glibc24=yes], [gold_cv_lib_glibc24=no])])
188 AM_CONDITIONAL(STATIC_TLS, test "$gold_cv_lib_glibc24" = "yes")
192 WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//'`
193 AC_SUBST(WARN_CXXFLAGS)
195 dnl Force support for large files by default. This may need to be
196 dnl host dependent. If build == host, we can check getconf LFS_CFLAGS.
197 LFS_CXXFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
198 AC_SUBST(LFS_CXXFLAGS)
200 AC_REPLACE_FUNCS(pread)
204 AC_CHECK_HEADERS(tr1/unordered_set tr1/unordered_map)
205 AC_CHECK_HEADERS(ext/hash_map ext/hash_set)
206 AC_CHECK_FUNCS(mallinfo)
208 dnl Test whether the compiler can specify a member templates to call.
209 AC_CACHE_CHECK([template member calls], [gold_cv_c_membertemplates],
211 class c { public: template<int i> void fn(); };
212 template<int i> void foo(c cv) { cv.fn<i>(); }
213 template void foo<1>(c cv);],
214 [gold_cv_c_membertemplates=yes], [gold_cv_c_membertemplates=no])])
216 if test "$gold_cv_c_membertemplates" = "yes"; then
217 AC_DEFINE(HAVE_MEMBER_TEMPLATE_SPECIFICATIONS, [],
218 [Whether the C++ compiler can call a template member with no arguments])
225 AC_OUTPUT(Makefile testsuite/Makefile po/Makefile.in:po/Make-in)