1 dnl Process this file with autoconf to produce a configure script
5 AC_CONFIG_SRCDIR(ldmain.c)
11 BFD_VERSION=`sed -n -e 's/^.._INIT_AUTOMAKE.*,[ ]*\([^ ]*\)[ ]*).*/\1/p' < ${srcdir}/../bfd/configure.in`
13 AM_INIT_AUTOMAKE(ld, ${BFD_VERSION})
16 AC_ARG_WITH(lib-path, [ --with-lib-path=dir1:dir2... set default LIB_PATH],LIB_PATH=$withval)
17 AC_ARG_ENABLE(targets,
18 [ --enable-targets alternative target configurations],
19 [case "${enableval}" in
20 yes | "") AC_MSG_ERROR(enable-targets option must specify target names or 'all')
22 no) enable_targets= ;;
23 *) enable_targets=$enableval ;;
25 AC_ARG_ENABLE(64-bit-bfd,
26 [ --enable-64-bit-bfd 64-bit support (on hosts with narrower word sizes)],
27 [case "${enableval}" in
30 *) AC_MSG_ERROR(bad value ${enableval} for 64-bit-bfd option) ;;
31 esac],[want64=false])dnl
34 [ --with-sysroot[=DIR] Search for usr/lib et al within DIR.],
36 case ${with_sysroot} in
37 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_alias}/sys-root' ;;
38 *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
41 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
44 if test "x$prefix" = xNONE; then
45 test_prefix=/usr/local
49 if test "x$exec_prefix" = xNONE; then
50 test_exec_prefix=$test_prefix
52 test_exec_prefix=$exec_prefix
54 case ${TARGET_SYSTEM_ROOT} in
55 "${test_prefix}"|"${test_prefix}/"*|\
56 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
57 '${prefix}'|'${prefix}/'*|\
58 '${exec_prefix}'|'${exec_prefix}/'*)
59 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
60 TARGET_SYSTEM_ROOT_DEFINE="$t"
66 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"\"'
69 AC_SUBST(TARGET_SYSTEM_ROOT)
70 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
72 dnl Use --enable-gold to decide if this linker should be the default.
73 dnl "install_as_default" is set to false if gold is the default linker.
74 dnl "installed_linker" is the installed BFD linker name.
76 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
77 [case "${enableval}" in
80 installed_linker=ld.bfd
83 install_as_default=yes
84 installed_linker=ld.bfd
87 AC_MSG_ERROR([invalid --enable-gold argument])
90 [install_as_default=yes
91 installed_linker=ld.bfd])
92 AC_SUBST(install_as_default)
93 AC_SUBST(installed_linker)
96 AS_HELP_STRING([--enable-got=<type>],
97 [GOT handling scheme (target, single, negative, multigot)]),
98 [case "${enableval}" in
99 target | single | negative | multigot) got_handling=$enableval ;;
100 *) AC_MSG_ERROR(bad value ${enableval} for --enable-got option) ;;
102 [got_handling=target])
104 case "${got_handling}" in
106 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_TARGET_DEFAULT],
107 [Define to choose default GOT handling scheme]) ;;
109 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_SINGLE],
110 [Define to choose default GOT handling scheme]) ;;
112 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_NEGATIVE],
113 [Define to choose default GOT handling scheme]) ;;
115 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_MULTIGOT],
116 [Define to choose default GOT handling scheme]) ;;
117 *) AC_MSG_ERROR(bad value ${got_handling} for --enable-got option) ;;
122 AC_CONFIG_HEADERS([config.h:config.in])
124 if test -z "$target" ; then
125 AC_MSG_ERROR(Unrecognized target system type; please check config.sub.)
127 if test -z "$host" ; then
128 AC_MSG_ERROR(Unrecognized host system type; please check config.sub.)
131 # host-specific stuff:
135 AC_USE_SYSTEM_EXTENSIONS
141 ALL_LINGUAS="fr sv tr es da vi zh_CN zh_TW ga fi id bg"
142 ZW_GNU_GETTEXT_SISTER_DIR
151 AM_CONDITIONAL(GENINSRC_NEVER, false)
152 ACX_PROG_CMP_IGNORE_INITIAL
154 . ${srcdir}/configure.host
157 AC_SUBST(HOSTING_CRT0)
158 AC_SUBST(HOSTING_LIBS)
159 AC_SUBST(NATIVE_LIB_DIRS)
161 AC_CHECK_HEADERS(string.h strings.h stdlib.h unistd.h elf-hints.h limits.h sys/param.h)
162 AC_CHECK_HEADERS(fcntl.h sys/file.h sys/time.h sys/stat.h)
163 AC_CHECK_FUNCS(glob mkstemp realpath sbrk waitpid)
164 AC_CHECK_FUNCS(open lseek close)
167 # Check for dlopen support and enable plugins if possible.
169 AC_CHECK_HEADER([dlfcn.h],[],[enable_plugins=no],[AC_INCLUDES_DEFAULT])
170 AC_SEARCH_LIBS([dlopen],[dl],[],[enable_plugins=no],[])
171 AC_CHECK_FUNCS([dlopen dlsym dlclose],[],[enable_plugins=no])
172 # We also support plugins on Windows (MinGW).
173 if test x$enable_plugins = xno ; then
174 AC_CHECK_HEADERS([Windows.h],[enable_plugins=yes],[],[AC_INCLUDES_DEFAULT])
176 AM_CONDITIONAL([ENABLE_PLUGINS], [test x$enable_plugins = xyes])
178 AC_MSG_CHECKING(for a known getopt prototype in unistd.h)
179 AC_CACHE_VAL(ld_cv_decl_getopt_unistd_h,
180 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>], [extern int getopt (int, char *const*, const char *);])],
181 ld_cv_decl_getopt_unistd_h=yes, ld_cv_decl_getopt_unistd_h=no)])
182 AC_MSG_RESULT($ld_cv_decl_getopt_unistd_h)
183 if test $ld_cv_decl_getopt_unistd_h = yes; then
184 AC_DEFINE([HAVE_DECL_GETOPT], 1,
185 [Is the prototype for getopt in <unistd.h> in the expected format?])
190 AC_CHECK_DECLS([strstr, free, sbrk, getenv, environ])
192 # Link in zlib if we can. This is needed only for the bootstrap tests
193 # right now, since those tests use libbfd, which depends on zlib.
194 AC_SEARCH_LIBS(zlibVersion, z, [AC_CHECK_HEADERS(zlib.h)])
196 # When converting linker scripts into strings for use in emulation
197 # files, use astring.sed if the compiler supports ANSI string
198 # concatenation, or ostring.sed otherwise. This is to support the
199 # broken Microsoft MSVC compiler, which limits the length of string
200 # constants, while still supporting pre-ANSI compilers which do not
201 # support string concatenation.
202 AC_MSG_CHECKING([whether ANSI C string concatenation works])
203 AC_CACHE_VAL(ld_cv_string_concatenation,
204 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [char *a = "a" "a";])],
205 ld_cv_string_concatenation=yes,
206 ld_cv_string_concatenation=no)])
207 AC_MSG_RESULT($ld_cv_string_concatenation)
208 if test "$ld_cv_string_concatenation" = "yes"; then
209 STRINGIFY=astring.sed
211 STRINGIFY=ostring.sed
215 # target-specific stuff:
223 dnl We need to get an arbitrary number of tdir definitions into
224 dnl Makefile. We can't do it using AC_SUBST, because autoconf does
225 dnl not permit literal newlines in an AC_SUBST variables. So we use a
229 for targ_alias in `echo $target_alias $enable_targets | sed 's/,/ /g'`
231 if test "$targ_alias" = "all"; then
234 # Canonicalize the secondary target names.
235 result=`$ac_config_sub $targ_alias 2>/dev/null`
236 if test -n "$result"; then
242 . ${srcdir}/configure.tgt
244 if test "$targ" = "$target"; then
248 if test x${want64} = xfalse; then
249 . ${srcdir}/../bfd/config.bfd
252 if test x${want64} = xtrue; then
253 targ_extra_emuls="$targ_extra_emuls $targ64_extra_emuls"
254 targ_extra_libpath="$targ_extra_libpath $targ64_extra_libpath"
257 for i in $targ_emul $targ_extra_emuls $targ_extra_libpath; do
258 case " $all_emuls " in
261 all_emuls="$all_emuls e${i}.o"
262 eval result=\$tdir_$i
263 test -z "$result" && result=$targ_alias
264 echo tdir_$i=$result >> tdirs
269 for i in $targ_emul $targ_extra_libpath; do
270 case " $all_libpath " in
273 if test -z "$all_libpath"; then
276 all_libpath="$all_libpath ${i}"
282 for i in $targ_extra_ofiles; do
283 case " $all_emul_extras " in
286 all_emul_extras="$all_emul_extras ${i}"
298 if test x${all_targets} = xtrue; then
299 if test x${want64} = xfalse; then
300 AC_CHECK_SIZEOF(long)
301 if test "x${ac_cv_sizeof_long}" = "x8"; then
305 if test x${want64} = xtrue; then
306 EMULATION_OFILES='$(ALL_EMULATIONS) $(ALL_64_EMULATIONS)'
308 EMULATION_OFILES='$(ALL_EMULATIONS)'
310 EMUL_EXTRA_OFILES='$(ALL_EMUL_EXTRA_OFILES)'
312 EMULATION_OFILES=$all_emuls
313 EMUL_EXTRA_OFILES=$all_emul_extras
315 AC_SUBST(EMULATION_OFILES)
316 AC_SUBST(EMUL_EXTRA_OFILES)
319 EMULATION_LIBPATH=$all_libpath
320 AC_SUBST(EMULATION_LIBPATH)
322 if test x${enable_static} = xno; then
323 TESTBFDLIB="--rpath ../bfd/.libs ../bfd/.libs/libbfd.so"
325 TESTBFDLIB="../bfd/.libs/libbfd.a"
329 target_vendor=${target_vendor=$host_vendor}
330 case "$target_vendor" in
331 hp) EXTRA_SHLIB_EXTENSION=".sl" ;;
332 *) EXTRA_SHLIB_EXTENSION= ;;
336 lynxos) EXTRA_SHLIB_EXTENSION=".a" ;;
339 if test x${EXTRA_SHLIB_EXTENSION} != x ; then
340 AC_DEFINE_UNQUOTED(EXTRA_SHLIB_EXTENSION, "$EXTRA_SHLIB_EXTENSION",
341 [Additional extension a shared object might have.])
344 dnl Required by html, pdf, install-pdf and install-html
345 AC_SUBST(datarootdir)
350 AC_CONFIG_FILES(Makefile po/Makefile.in:po/Make-in)