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"
150 ZW_GNU_GETTEXT_SISTER_DIR
157 AM_CONDITIONAL(NATIVE_LINKER,
158 test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias")
159 AM_CONDITIONAL(GCC, test "$GCC" = yes)
160 AM_CONDITIONAL(OBJDUMP_AND_CPPFILT,
161 [objdump --help >/dev/null && c++filt --help >/dev/null])
163 dnl Some architectures do not support taking pointers of functions
164 dnl defined in shared libraries except in -fPIC mode. We need to
165 dnl tell the unittest framework if we're compiling for one of those
166 dnl targets, so it doesn't try to run the tests that do that.
167 AM_CONDITIONAL(FN_PTRS_IN_SO_WITHOUT_PIC, [
174 dnl Test for __thread support.
175 AC_CACHE_CHECK([for thread support], [gold_cv_c_thread],
176 [AC_COMPILE_IFELSE([__thread int i = 1;],
177 [gold_cv_c_thread=yes], [gold_cv_c_thread=no])])
179 AM_CONDITIONAL(TLS, test "$gold_cv_c_thread" = "yes")
181 dnl On GNU/Linux TLS in static programs only works when using glibc
183 AC_CACHE_CHECK([for glibc >= 2.4], [gold_cv_lib_glibc24],
185 #include <features.h>
186 #if !defined __GLIBC__
188 #elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 4)
191 ], [gold_cv_lib_glibc24=yes], [gold_cv_lib_glibc24=no])])
193 AM_CONDITIONAL(STATIC_TLS, test "$gold_cv_lib_glibc24" = "yes")
197 WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//'`
198 AC_SUBST(WARN_CXXFLAGS)
200 dnl Force support for large files by default. This may need to be
201 dnl host dependent. If build == host, we can check getconf LFS_CFLAGS.
202 LFS_CXXFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
203 AC_SUBST(LFS_CXXFLAGS)
205 AC_REPLACE_FUNCS(pread)
207 # Link in zlib if we can. This allows us to write compressed sections.
208 AC_SEARCH_LIBS(zlibVersion, z, [AC_CHECK_HEADERS(zlib.h)])
212 AC_CHECK_HEADERS(tr1/unordered_set tr1/unordered_map)
213 AC_CHECK_HEADERS(ext/hash_map ext/hash_set)
214 AC_CHECK_FUNCS(mallinfo)
216 dnl Test whether the compiler can specify a member templates to call.
217 AC_CACHE_CHECK([template member calls], [gold_cv_c_membertemplates],
219 class c { public: template<int i> void fn(); };
220 template<int i> void foo(c cv) { cv.fn<i>(); }
221 template void foo<1>(c cv);],
222 [gold_cv_c_membertemplates=yes], [gold_cv_c_membertemplates=no])])
224 if test "$gold_cv_c_membertemplates" = "yes"; then
225 AC_DEFINE(HAVE_MEMBER_TEMPLATE_SPECIFICATIONS, [],
226 [Whether the C++ compiler can call a template member with no arguments])
233 AC_OUTPUT(Makefile testsuite/Makefile po/Makefile.in:po/Make-in)