1 dnl Process this file with autoconf to produce a configure script
5 AC_CONFIG_SRCDIR(ldmain.c)
12 BFD_VERSION=`sed -n -e 's/^.._INIT_AUTOMAKE.*,[ ]*\([^ ]*\)[ ]*).*/\1/p' < ${srcdir}/../bfd/configure.in`
14 AM_INIT_AUTOMAKE(ld, ${BFD_VERSION})
17 AC_ARG_WITH(lib-path, [ --with-lib-path=dir1:dir2... set default LIB_PATH],LIB_PATH=$withval)
18 AC_ARG_ENABLE(targets,
19 [ --enable-targets alternative target configurations],
20 [case "${enableval}" in
21 yes | "") AC_MSG_ERROR(enable-targets option must specify target names or 'all')
23 no) enable_targets= ;;
24 *) enable_targets=$enableval ;;
26 AC_ARG_ENABLE(64-bit-bfd,
27 [ --enable-64-bit-bfd 64-bit support (on hosts with narrower word sizes)],
28 [case "${enableval}" in
31 *) AC_MSG_ERROR(bad value ${enableval} for 64-bit-bfd option) ;;
32 esac],[want64=false])dnl
35 [ --with-sysroot[=DIR] Search for usr/lib et al within DIR.],
37 case ${with_sysroot} in
38 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_alias}/sys-root' ;;
39 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
42 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
45 if test "x$prefix" = xNONE; then
46 test_prefix=/usr/local
50 if test "x$exec_prefix" = xNONE; then
51 test_exec_prefix=$test_prefix
53 test_exec_prefix=$exec_prefix
55 case ${TARGET_SYSTEM_ROOT} in
56 "${test_prefix}"|"${test_prefix}/"*|\
57 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
58 '${prefix}'|'${prefix}/'*|\
59 '${exec_prefix}'|'${exec_prefix}/'*)
60 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
61 TARGET_SYSTEM_ROOT_DEFINE="$t"
67 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"\"'
70 AC_SUBST(TARGET_SYSTEM_ROOT)
71 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
73 dnl Use --enable-gold to decide if this linker should be the default.
74 dnl "install_as_default" is set to false if gold is the default linker.
75 dnl "installed_linker" is the installed BFD linker name.
77 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
78 [case "${enableval}" in
81 installed_linker=ld.bfd
84 install_as_default=yes
85 installed_linker=ld.bfd
88 AC_MSG_ERROR([invalid --enable-gold argument])
91 [install_as_default=yes
92 installed_linker=ld.bfd])
93 AC_SUBST(install_as_default)
94 AC_SUBST(installed_linker)
97 AS_HELP_STRING([--enable-got=<type>],
98 [GOT handling scheme (target, single, negative, multigot)]),
99 [case "${enableval}" in
100 target | single | negative | multigot) got_handling=$enableval ;;
101 *) AC_MSG_ERROR(bad value ${enableval} for --enable-got option) ;;
103 [got_handling=target])
105 case "${got_handling}" in
107 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_TARGET_DEFAULT],
108 [Define to choose default GOT handling scheme]) ;;
110 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_SINGLE],
111 [Define to choose default GOT handling scheme]) ;;
113 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_NEGATIVE],
114 [Define to choose default GOT handling scheme]) ;;
116 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_MULTIGOT],
117 [Define to choose default GOT handling scheme]) ;;
118 *) AC_MSG_ERROR(bad value ${got_handling} for --enable-got option) ;;
125 AC_CONFIG_HEADERS([config.h:config.in])
127 if test -z "$target" ; then
128 AC_MSG_ERROR(Unrecognized target system type; please check config.sub.)
130 if test -z "$host" ; then
131 AC_MSG_ERROR(Unrecognized host system type; please check config.sub.)
134 # host-specific stuff:
139 AC_USE_SYSTEM_EXTENSIONS
145 ALL_LINGUAS="fr sv tr es da vi zh_CN zh_TW ga fi id bg it"
146 ZW_GNU_GETTEXT_SISTER_DIR
155 AM_CONDITIONAL(GENINSRC_NEVER, false)
156 ACX_PROG_CMP_IGNORE_INITIAL
158 . ${srcdir}/configure.host
161 AC_SUBST(HOSTING_CRT0)
162 AC_SUBST(HOSTING_LIBS)
163 AC_SUBST(NATIVE_LIB_DIRS)
165 AC_CHECK_HEADERS(string.h strings.h stdlib.h unistd.h elf-hints.h limits.h locale.h sys/param.h)
166 AC_CHECK_HEADERS(fcntl.h sys/file.h sys/time.h sys/stat.h)
168 AC_CHECK_FUNCS(glob mkstemp realpath sbrk setlocale waitpid)
169 AC_CHECK_FUNCS(open lseek close)
172 # Check for dlopen support and enable plugins if possible.
174 AC_CHECK_HEADER([dlfcn.h],[],[enable_plugins=no],[AC_INCLUDES_DEFAULT])
175 AC_SEARCH_LIBS([dlopen],[dl],[],[enable_plugins=no],[])
176 AC_CHECK_FUNCS([dlopen dlsym dlclose],[],[enable_plugins=no])
177 # We also support plugins on Windows (MinGW).
178 if test x$enable_plugins = xno ; then
179 AC_CHECK_HEADERS([windows.h],[enable_plugins=yes],[],[AC_INCLUDES_DEFAULT])
181 AM_CONDITIONAL([ENABLE_PLUGINS], [test x$enable_plugins = xyes])
183 AC_ARG_ENABLE(initfini-array,
184 [ --enable-initfini-array use .init_array/.fini_array sections],
186 AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,
187 gcc_cv_initfini_array, [dnl
188 if test "x${build}" = "x${target}" ; then
189 AC_RUN_IFELSE([AC_LANG_SOURCE([
191 int main (void) { return x; }
192 int foo (void) { x = 0; }
193 int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;])],
194 [gcc_cv_initfini_array=yes], [gcc_cv_initfini_array=no],
195 [gcc_cv_initfini_array=no])
197 gcc_cv_initfini_array=no
199 enable_initfini_array=$gcc_cv_initfini_array
201 AC_SUBST(enable_initfini_array)
202 if test $enable_initfini_array = yes; then
203 AC_DEFINE(HAVE_INITFINI_ARRAY, 1,
204 [Define .init_array/.fini_array sections are available and working.])
207 AC_MSG_CHECKING(for a known getopt prototype in unistd.h)
208 AC_CACHE_VAL(ld_cv_decl_getopt_unistd_h,
209 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>], [extern int getopt (int, char *const*, const char *);])],
210 ld_cv_decl_getopt_unistd_h=yes, ld_cv_decl_getopt_unistd_h=no)])
211 AC_MSG_RESULT($ld_cv_decl_getopt_unistd_h)
212 if test $ld_cv_decl_getopt_unistd_h = yes; then
213 AC_DEFINE([HAVE_DECL_GETOPT], 1,
214 [Is the prototype for getopt in <unistd.h> in the expected format?])
219 AC_CHECK_DECLS([strstr, free, sbrk, getenv, environ])
221 # Link in zlib if we can. This is needed only for the bootstrap tests
222 # right now, since those tests use libbfd, which depends on zlib.
225 # When converting linker scripts into strings for use in emulation
226 # files, use astring.sed if the compiler supports ANSI string
227 # concatenation, or ostring.sed otherwise. This is to support the
228 # broken Microsoft MSVC compiler, which limits the length of string
229 # constants, while still supporting pre-ANSI compilers which do not
230 # support string concatenation.
231 AC_MSG_CHECKING([whether ANSI C string concatenation works])
232 AC_CACHE_VAL(ld_cv_string_concatenation,
233 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [char *a = "a" "a";])],
234 ld_cv_string_concatenation=yes,
235 ld_cv_string_concatenation=no)])
236 AC_MSG_RESULT($ld_cv_string_concatenation)
237 if test "$ld_cv_string_concatenation" = "yes"; then
238 STRINGIFY=astring.sed
240 STRINGIFY=ostring.sed
244 # target-specific stuff:
252 dnl We need to get an arbitrary number of tdir definitions into
253 dnl Makefile. We can't do it using AC_SUBST, because autoconf does
254 dnl not permit literal newlines in an AC_SUBST variables. So we use a
258 # If the host is 64-bit, then we enable 64-bit targets by default.
259 # This is consistent with what ../bfd/configure.in does.
260 if test x${want64} = xfalse; then
261 AC_CHECK_SIZEOF(void *)
262 if test "x${ac_cv_sizeof_void_p}" = "x8"; then
267 for targ_alias in `echo $target_alias $enable_targets | sed 's/,/ /g'`
269 if test "$targ_alias" = "all"; then
272 # Canonicalize the secondary target names.
273 result=`$ac_config_sub $targ_alias 2>/dev/null`
274 if test -n "$result"; then
280 . ${srcdir}/configure.tgt
282 if test "$targ" = "$target"; then
286 if test x${want64} = xfalse; then
287 . ${srcdir}/../bfd/config.bfd
290 if test x${want64} = xtrue; then
291 targ_extra_emuls="$targ_extra_emuls $targ64_extra_emuls"
292 targ_extra_libpath="$targ_extra_libpath $targ64_extra_libpath"
295 for i in $targ_emul $targ_extra_emuls $targ_extra_libpath; do
296 case " $all_emuls " in
299 all_emuls="$all_emuls e${i}.o"
300 eval result=\$tdir_$i
301 test -z "$result" && result=$targ_alias
302 echo tdir_$i=$result >> tdirs
307 for i in $targ_emul $targ_extra_libpath; do
308 case " $all_libpath " in
311 if test -z "$all_libpath"; then
314 all_libpath="$all_libpath ${i}"
320 for i in $targ_extra_ofiles; do
321 case " $all_emul_extras " in
324 all_emul_extras="$all_emul_extras ${i}"
336 if test x${all_targets} = xtrue; then
337 if test x${want64} = xtrue; then
338 EMULATION_OFILES='$(ALL_EMULATIONS) $(ALL_64_EMULATIONS)'
340 EMULATION_OFILES='$(ALL_EMULATIONS)'
342 EMUL_EXTRA_OFILES='$(ALL_EMUL_EXTRA_OFILES)'
344 EMULATION_OFILES=$all_emuls
345 EMUL_EXTRA_OFILES=$all_emul_extras
347 AC_SUBST(EMULATION_OFILES)
348 AC_SUBST(EMUL_EXTRA_OFILES)
351 EMULATION_LIBPATH=$all_libpath
352 AC_SUBST(EMULATION_LIBPATH)
354 if test x${enable_static} = xno; then
355 TESTBFDLIB="--rpath ../bfd/.libs ../bfd/.libs/libbfd.so"
357 TESTBFDLIB="../bfd/.libs/libbfd.a"
361 target_vendor=${target_vendor=$host_vendor}
362 case "$target_vendor" in
363 hp) EXTRA_SHLIB_EXTENSION=".sl" ;;
364 *) EXTRA_SHLIB_EXTENSION= ;;
368 lynxos) EXTRA_SHLIB_EXTENSION=".a" ;;
371 if test x${EXTRA_SHLIB_EXTENSION} != x ; then
372 AC_DEFINE_UNQUOTED(EXTRA_SHLIB_EXTENSION, "$EXTRA_SHLIB_EXTENSION",
373 [Additional extension a shared object might have.])
376 dnl Required by html, pdf, install-pdf and install-html
377 AC_SUBST(datarootdir)
382 AC_CONFIG_FILES(Makefile po/Makefile.in:po/Make-in)