1 dnl Process this file with autoconf to produce a configure script
3 dnl Copyright (C) 2012-2014 Free Software Foundation, Inc.
5 dnl This file is free software; you can redistribute it and/or modify
6 dnl it under the terms of the GNU General Public License as published by
7 dnl the Free Software Foundation; either version 3 of the License, or
8 dnl (at your option) any later version.
10 dnl This program is distributed in the hope that it will be useful,
11 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
12 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 dnl GNU General Public License for more details.
15 dnl You should have received a copy of the GNU General Public License
16 dnl along with this program; see the file COPYING3. If not see
17 dnl <http://www.gnu.org/licenses/>.
22 AC_CONFIG_SRCDIR(ldmain.c)
29 BFD_VERSION=`${srcdir}/../bfd/configure --version | sed -n -e '1s,.* ,,p'`
31 AM_INIT_AUTOMAKE(ld, ${BFD_VERSION})
34 AC_ARG_WITH(lib-path, [ --with-lib-path=dir1:dir2... set default LIB_PATH],LIB_PATH=$withval)
35 AC_ARG_ENABLE(targets,
36 [ --enable-targets alternative target configurations],
37 [case "${enableval}" in
38 yes | "") AC_MSG_ERROR(enable-targets option must specify target names or 'all')
40 no) enable_targets= ;;
41 *) enable_targets=$enableval ;;
43 AC_ARG_ENABLE(64-bit-bfd,
44 [ --enable-64-bit-bfd 64-bit support (on hosts with narrower word sizes)],
45 [case "${enableval}" in
48 *) AC_MSG_ERROR(bad value ${enableval} for 64-bit-bfd option) ;;
49 esac],[want64=false])dnl
52 [ --with-sysroot[=DIR] Search for usr/lib et al within DIR.],
54 case ${with_sysroot} in
55 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_alias}/sys-root' ;;
56 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
59 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
62 if test "x$prefix" = xNONE; then
63 test_prefix=/usr/local
67 if test "x$exec_prefix" = xNONE; then
68 test_exec_prefix=$test_prefix
70 test_exec_prefix=$exec_prefix
72 case ${TARGET_SYSTEM_ROOT} in
73 "${test_prefix}"|"${test_prefix}/"*|\
74 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
75 '${prefix}'|'${prefix}/'*|\
76 '${exec_prefix}'|'${exec_prefix}/'*)
77 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
78 TARGET_SYSTEM_ROOT_DEFINE="$t"
84 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"\"'
87 AC_SUBST(TARGET_SYSTEM_ROOT)
88 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
90 dnl Use --enable-gold to decide if this linker should be the default.
91 dnl "install_as_default" is set to false if gold is the default linker.
92 dnl "installed_linker" is the installed BFD linker name.
94 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
95 [case "${enableval}" in
98 installed_linker=ld.bfd
101 install_as_default=yes
102 installed_linker=ld.bfd
105 AC_MSG_ERROR([invalid --enable-gold argument])
108 [install_as_default=yes
109 installed_linker=ld.bfd])
110 AC_SUBST(install_as_default)
111 AC_SUBST(installed_linker)
114 AS_HELP_STRING([--enable-got=<type>],
115 [GOT handling scheme (target, single, negative, multigot)]),
116 [case "${enableval}" in
117 target | single | negative | multigot) got_handling=$enableval ;;
118 *) AC_MSG_ERROR(bad value ${enableval} for --enable-got option) ;;
120 [got_handling=target])
122 case "${got_handling}" in
124 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_TARGET_DEFAULT],
125 [Define to choose default GOT handling scheme]) ;;
127 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_SINGLE],
128 [Define to choose default GOT handling scheme]) ;;
130 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_NEGATIVE],
131 [Define to choose default GOT handling scheme]) ;;
133 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_MULTIGOT],
134 [Define to choose default GOT handling scheme]) ;;
135 *) AC_MSG_ERROR(bad value ${got_handling} for --enable-got option) ;;
142 AC_CONFIG_HEADERS([config.h:config.in])
145 AH_VERBATIM([00_CONFIG_H_CHECK],
146 [/* Check that config.h is #included before system headers
147 (this works only for glibc, but that should be enough). */
148 #if defined(__GLIBC__) && !defined(__FreeBSD_kernel__) && !defined(__CONFIG_H__)
149 # error config.h must be #included before system headers
151 #define __CONFIG_H__ 1])
153 if test -z "$target" ; then
154 AC_MSG_ERROR(Unrecognized target system type; please check config.sub.)
156 if test -z "$host" ; then
157 AC_MSG_ERROR(Unrecognized host system type; please check config.sub.)
160 # host-specific stuff:
165 AC_USE_SYSTEM_EXTENSIONS
171 ALL_LINGUAS="fr sv tr es da vi zh_CN zh_TW ga fi id bg it uk"
172 ZW_GNU_GETTEXT_SISTER_DIR
181 AM_CONDITIONAL(GENINSRC_NEVER, false)
182 ACX_PROG_CMP_IGNORE_INITIAL
184 . ${srcdir}/configure.host
187 AC_SUBST(HOSTING_CRT0)
188 AC_SUBST(HOSTING_SCRT0)
189 AC_SUBST(HOSTING_LIBS)
190 AC_SUBST(HOSTING_SLIBS)
191 AC_SUBST(NATIVE_LIB_DIRS)
193 AC_CHECK_HEADERS(string.h strings.h stdlib.h unistd.h elf-hints.h limits.h locale.h sys/param.h)
194 AC_CHECK_HEADERS(fcntl.h sys/file.h sys/time.h sys/stat.h)
196 AC_CHECK_FUNCS(glob mkstemp realpath sbrk setlocale waitpid)
197 AC_CHECK_FUNCS(open lseek close)
200 # Check for dlopen support and enable plugins if possible.
202 AC_CHECK_HEADER([dlfcn.h],[],[enable_plugins=no],[AC_INCLUDES_DEFAULT])
203 AC_SEARCH_LIBS([dlopen],[dl],[],[enable_plugins=no],[])
204 AC_CHECK_FUNCS([dlopen dlsym dlclose],[],[enable_plugins=no])
205 # We also support plugins on Windows (MinGW).
206 if test x$enable_plugins = xno ; then
207 AC_CHECK_HEADERS([windows.h],[enable_plugins=yes],[],[AC_INCLUDES_DEFAULT])
209 AM_CONDITIONAL([ENABLE_PLUGINS], [test x$enable_plugins = xyes])
211 AC_ARG_ENABLE(initfini-array,
212 [ --enable-initfini-array use .init_array/.fini_array sections],
214 AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,
215 gcc_cv_initfini_array, [dnl
216 if test "x${build}" = "x${target}" ; then
217 AC_RUN_IFELSE([AC_LANG_SOURCE([
219 int main (void) { return x; }
220 int foo (void) { x = 0; }
221 int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;])],
222 [gcc_cv_initfini_array=yes], [gcc_cv_initfini_array=no],
223 [gcc_cv_initfini_array=no])
225 gcc_cv_initfini_array=no
227 enable_initfini_array=$gcc_cv_initfini_array
229 AC_SUBST(enable_initfini_array)
230 if test $enable_initfini_array = yes; then
231 AC_DEFINE(HAVE_INITFINI_ARRAY, 1,
232 [Define .init_array/.fini_array sections are available and working.])
235 AC_MSG_CHECKING(for a known getopt prototype in unistd.h)
236 AC_CACHE_VAL(ld_cv_decl_getopt_unistd_h,
237 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>], [extern int getopt (int, char *const*, const char *);])],
238 ld_cv_decl_getopt_unistd_h=yes, ld_cv_decl_getopt_unistd_h=no)])
239 AC_MSG_RESULT($ld_cv_decl_getopt_unistd_h)
240 if test $ld_cv_decl_getopt_unistd_h = yes; then
241 AC_DEFINE([HAVE_DECL_GETOPT], 1,
242 [Is the prototype for getopt in <unistd.h> in the expected format?])
247 AC_CHECK_DECLS([strstr, free, sbrk, getenv, environ])
249 # Link in zlib if we can. This is needed only for the bootstrap tests
250 # right now, since those tests use libbfd, which depends on zlib.
253 # When converting linker scripts into strings for use in emulation
254 # files, use astring.sed if the compiler supports ANSI string
255 # concatenation, or ostring.sed otherwise. This is to support the
256 # broken Microsoft MSVC compiler, which limits the length of string
257 # constants, while still supporting pre-ANSI compilers which do not
258 # support string concatenation.
259 AC_MSG_CHECKING([whether ANSI C string concatenation works])
260 AC_CACHE_VAL(ld_cv_string_concatenation,
261 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [char *a = "a" "a";])],
262 ld_cv_string_concatenation=yes,
263 ld_cv_string_concatenation=no)])
264 AC_MSG_RESULT($ld_cv_string_concatenation)
265 if test "$ld_cv_string_concatenation" = "yes"; then
266 STRINGIFY=astring.sed
268 STRINGIFY=ostring.sed
272 # target-specific stuff:
280 dnl We need to get an arbitrary number of tdir definitions into
281 dnl Makefile. We can't do it using AC_SUBST, because autoconf does
282 dnl not permit literal newlines in an AC_SUBST variables. So we use a
286 # If the host is 64-bit, then we enable 64-bit targets by default.
287 # This is consistent with what ../bfd/configure.in does.
288 if test x${want64} = xfalse; then
289 AC_CHECK_SIZEOF(void *)
290 if test "x${ac_cv_sizeof_void_p}" = "x8"; then
295 for targ_alias in `echo $target_alias $enable_targets | sed 's/,/ /g'`
297 if test "$targ_alias" = "all"; then
300 # Canonicalize the secondary target names.
301 result=`$ac_config_sub $targ_alias 2>/dev/null`
302 if test -n "$result"; then
308 . ${srcdir}/configure.tgt
310 if test "$targ" = "$target"; then
314 if test x${want64} = xfalse; then
315 . ${srcdir}/../bfd/config.bfd
318 if test x${want64} = xtrue; then
319 targ_extra_emuls="$targ_extra_emuls $targ64_extra_emuls"
320 targ_extra_libpath="$targ_extra_libpath $targ64_extra_libpath"
323 for i in $targ_emul $targ_extra_emuls $targ_extra_libpath; do
324 case " $all_emuls " in
327 all_emuls="$all_emuls e${i}.o"
328 eval result=\$tdir_$i
329 test -z "$result" && result=$targ_alias
330 echo tdir_$i=$result >> tdirs
335 for i in $targ_emul $targ_extra_libpath; do
336 case " $all_libpath " in
339 if test -z "$all_libpath"; then
342 all_libpath="$all_libpath ${i}"
348 for i in $targ_extra_ofiles; do
349 case " $all_emul_extras " in
352 all_emul_extras="$all_emul_extras ${i}"
365 if test x${all_targets} = xtrue; then
366 if test x${want64} = xtrue; then
367 EMULATION_OFILES='$(ALL_EMULATIONS) $(ALL_64_EMULATIONS)'
369 EMULATION_OFILES='$(ALL_EMULATIONS)'
371 EMUL_EXTRA_OFILES='$(ALL_EMUL_EXTRA_OFILES)'
373 EMULATION_OFILES=$all_emuls
374 EMUL_EXTRA_OFILES=$all_emul_extras
376 AC_SUBST(EMULATION_OFILES)
377 AC_SUBST(EMUL_EXTRA_OFILES)
380 EMULATION_LIBPATH=$all_libpath
381 AC_SUBST(EMULATION_LIBPATH)
383 if test x${enable_static} = xno; then
384 TESTBFDLIB="--rpath ../bfd/.libs ../bfd/.libs/libbfd.so"
386 TESTBFDLIB="../bfd/.libs/libbfd.a"
390 target_vendor=${target_vendor=$host_vendor}
391 case "$target_vendor" in
392 hp) EXTRA_SHLIB_EXTENSION=".sl" ;;
393 *) EXTRA_SHLIB_EXTENSION= ;;
397 lynxos) EXTRA_SHLIB_EXTENSION=".a" ;;
400 if test x${EXTRA_SHLIB_EXTENSION} != x ; then
401 AC_DEFINE_UNQUOTED(EXTRA_SHLIB_EXTENSION, "$EXTRA_SHLIB_EXTENSION",
402 [Additional extension a shared object might have.])
405 dnl Required by html, pdf, install-pdf and install-html
406 AC_SUBST(datarootdir)
411 AC_CONFIG_FILES(Makefile po/Makefile.in:po/Make-in)