Commit | Line | Data |
---|---|---|
bae7f79e ILT |
1 | dnl Process this file with autoconf to produce a configure script. |
2 | ||
3 | AC_PREREQ(2.59) | |
8486ee48 ILT |
4 | |
5 | AC_INIT(gold, 0.1) | |
6 | AC_CONFIG_SRCDIR(gold.cc) | |
bae7f79e ILT |
7 | |
8 | AC_CANONICAL_TARGET | |
9 | ||
6ea55b82 | 10 | AM_INIT_AUTOMAKE([no-dist parallel-tests]) |
bae7f79e ILT |
11 | |
12 | AM_CONFIG_HEADER(config.h:config.in) | |
13 | ||
df7b86aa NC |
14 | # PR 14072 |
15 | AH_VERBATIM([00_CONFIG_H_CHECK], | |
16 | [/* Check that config.h is #included before system headers | |
17 | (this works only for glibc, but that should be enough). */ | |
18 | #if defined(__GLIBC__) && !defined(__CONFIG_H__) | |
19 | # error config.h must be #included before system headers | |
20 | #endif | |
21 | #define __CONFIG_H__ 1]) | |
22 | ||
ad2d6943 ILT |
23 | AC_ARG_WITH(sysroot, |
24 | [ --with-sysroot[=DIR] search for usr/lib et al within DIR], | |
25 | [sysroot=$withval], [sysroot=no]) | |
26 | ||
27 | if test "$sysroot" = "yes"; then | |
28 | sysroot='${exec_prefix}/${target_alias}/sys-root' | |
29 | elif test "$sysroot" = "no"; then | |
30 | sysroot= | |
31 | fi | |
32 | ||
33 | sysroot_relocatable=0 | |
34 | if test -n "$sysroot"; then | |
35 | case "sysroot" in | |
36 | "${prefix}" | "${prefix}/"* | \ | |
37 | "${exec_prefix}" | "${exec_prefix}/"* | \ | |
38 | '${prefix}' | '${prefix}/'*| \ | |
39 | '${exec_prefix}' | '${exec_prefix}/'*) | |
40 | sysroot_relocatable=1 | |
41 | ;; | |
42 | esac | |
43 | fi | |
44 | ||
45 | AC_DEFINE_UNQUOTED(TARGET_SYSTEM_ROOT, "$sysroot", | |
46 | [System root for target files]) | |
47 | AC_DEFINE_UNQUOTED(TARGET_SYSTEM_ROOT_RELOCATABLE, $sysroot_relocatable, | |
48 | [Whether the system root can be relocated]) | |
49 | ||
4fda8867 NC |
50 | dnl "install_as_default" is true if the linker to be installed as the |
51 | dnl default linker, ld. | |
52 | dnl "installed_linker" is the installed gold linker name. | |
c7791212 NC |
53 | |
54 | default_ld= | |
55 | AC_ARG_ENABLE(ld, | |
56 | [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]], | |
58797674 | 57 | [case "${enableval}" in |
c7791212 NC |
58 | default) |
59 | default_ld=ld.bfd | |
60 | ;; | |
61 | esac]) | |
62 | ||
63 | AC_ARG_ENABLE(gold, | |
64 | [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]], | |
65 | [case "${enableval}" in | |
66 | yes|default) | |
67 | if test x${default_ld} = x; then | |
68 | install_as_default=yes | |
69 | fi | |
4fda8867 NC |
70 | installed_linker=ld.gold |
71 | ;; | |
c7791212 | 72 | no) |
4fda8867 NC |
73 | ;; |
74 | *) | |
75 | AC_MSG_ERROR([invalid --enable-gold argument]) | |
76 | ;; | |
77 | esac], | |
c7791212 NC |
78 | [install_as_default=no |
79 | installed_linker=ld.gold]) | |
4fda8867 NC |
80 | AC_SUBST(install_as_default) |
81 | AC_SUBST(installed_linker) | |
82 | ||
fe9a4c12 ILT |
83 | dnl For now threads are a configure time option. |
84 | AC_ARG_ENABLE([threads], | |
85 | [ --enable-threads multi-threaded linking], | |
86 | [case "${enableval}" in | |
87 | yes | "") threads=yes ;; | |
88 | no) threads=no ;; | |
89 | *) threads=yes ;; | |
90 | esac], | |
91 | [threads=no]) | |
92 | if test "$threads" = "yes"; then | |
93 | AC_DEFINE(ENABLE_THREADS, 1, | |
94 | [Define to do multi-threaded linking]) | |
95 | fi | |
96 | AM_CONDITIONAL(THREADS, test "$threads" = "yes") | |
89fc3421 CC |
97 | |
98 | AC_ARG_ENABLE([plugins], | |
99 | [ --enable-plugins linker plugins], | |
100 | [case "${enableval}" in | |
101 | yes | "") plugins=yes ;; | |
102 | no) plugins=no ;; | |
103 | *) plugins=yes ;; | |
104 | esac], | |
105 | [plugins=no]) | |
106 | if test "$plugins" = "yes"; then | |
107 | AC_DEFINE(ENABLE_PLUGINS, 1, | |
108 | [Define to enable linker plugins]) | |
109 | fi | |
110 | AM_CONDITIONAL(PLUGINS, test "$plugins" = "yes") | |
fe9a4c12 | 111 | |
193a53d9 ILT |
112 | AC_ARG_ENABLE([targets], |
113 | [ --enable-targets alternative target configurations], | |
114 | [case "${enableval}" in | |
115 | yes | "") | |
116 | AC_MSG_ERROR([--enable-targets option must specify target names or 'all']) | |
117 | ;; | |
118 | no) | |
119 | enable_targets= | |
120 | ;; | |
121 | *) | |
122 | enable_targets=$enableval | |
123 | ;; | |
124 | esac], | |
125 | [# For now, enable all targets by default | |
126 | enable_targets=all | |
127 | ]) | |
128 | ||
129 | # Canonicalize the enabled targets. | |
130 | if test -n "$enable_targets"; then | |
131 | for targ in `echo $enable_targets | sed -e 's/,/ /g'`; do | |
132 | result=`$ac_config_sub $targ 2>/dev/null` | |
133 | if test -n "$result"; then | |
134 | canon_targets="$canon_targets $result" | |
135 | else | |
136 | # Permit unrecognized target names, like "all". | |
137 | canon_targets="$canon_targets $targ" | |
138 | fi | |
139 | done | |
140 | fi | |
141 | ||
142 | # See which specific instantiations we need. | |
6df6da4a ILT |
143 | targetobjs= |
144 | all_targets= | |
fbfba508 ILT |
145 | default_machine= |
146 | default_size= | |
147 | default_big_endian= | |
36959681 | 148 | default_osabi=ELFOSABI_NONE |
fbfba508 ILT |
149 | targ_32_little= |
150 | targ_32_big= | |
151 | targ_64_little= | |
152 | targ_64_big= | |
193a53d9 | 153 | for targ in $target $canon_targets; do |
193a53d9 ILT |
154 | if test "$targ" = "all"; then |
155 | targ_32_little=yes | |
156 | targ_32_big=yes | |
157 | targ_64_little=yes | |
158 | targ_64_big=yes | |
6df6da4a | 159 | all_targets=yes |
193a53d9 | 160 | else |
fbfba508 ILT |
161 | . ${srcdir}/configure.tgt |
162 | ||
163 | if test "$targ_obj" = "UNKNOWN"; then | |
6df6da4a | 164 | AC_MSG_ERROR("unsupported target $targ") |
fbfba508 ILT |
165 | else |
166 | targetobjs="$targetobjs ${targ_obj}.\$(OBJEXT)" | |
60b2b4e7 ILT |
167 | if test "$targ_extra_obj" != ""; then |
168 | targetobjs="$targetobjs ${targ_extra_obj}.\$(OBJEXT)" | |
169 | fi | |
f5314dd5 DM |
170 | if test "$targ_size" = "32" -o "$targ_extra_size" = "32"; then |
171 | if test "$targ_big_endian" = "true" \ | |
172 | -o "$targ_extra_big_endian" = "true"; then | |
173 | targ_32_big=yes | |
174 | fi | |
175 | if test "$targ_big_endian" = "false" \ | |
176 | -o "$targ_extra_big_endian" = "false"; then | |
177 | targ_32_little=yes | |
178 | fi | |
179 | fi | |
180 | if test "$targ_size" = "64" -o "$targ_extra_size" = "64"; then | |
181 | if test "$targ_big_endian" = "true" \ | |
182 | -o "$targ_extra_big_endian" = "true"; then | |
183 | targ_64_big=yes | |
184 | fi | |
185 | if test "$targ_big_endian" = "false" \ | |
186 | -o "$targ_extra_big_endian" = "false"; then | |
187 | targ_64_little=yes | |
188 | fi | |
fbfba508 ILT |
189 | fi |
190 | ||
191 | if test "$target" = "$targ"; then | |
192 | default_machine=$targ_machine | |
193 | default_size=$targ_size | |
194 | default_big_endian=$targ_big_endian | |
36959681 | 195 | default_osabi=$targ_osabi |
364c7fa5 ILT |
196 | |
197 | AM_CONDITIONAL(DEFAULT_TARGET_ARM, test "$targ_obj" = "arm") | |
198 | AM_CONDITIONAL(DEFAULT_TARGET_I386, test "$targ_obj" = "i386") | |
199 | AM_CONDITIONAL(DEFAULT_TARGET_POWERPC, test "$targ_obj" = "powerpc") | |
200 | AM_CONDITIONAL(DEFAULT_TARGET_SPARC, test "$targ_obj" = "sparc") | |
201 | AM_CONDITIONAL(DEFAULT_TARGET_X86_64, test "$targ_obj" = "x86_64") | |
fbfba508 ILT |
202 | fi |
203 | fi | |
193a53d9 ILT |
204 | fi |
205 | done | |
206 | ||
6cfaf60b | 207 | # Remove any duplicates. |
9109c078 ILT |
208 | to="" |
209 | for t in $targetobjs; do | |
210 | case " $to " in | |
211 | *" $t "*) ;; | |
212 | *) to="$to $t" ;; | |
213 | esac | |
214 | done | |
215 | targetobjs=$to | |
6cfaf60b | 216 | |
193a53d9 ILT |
217 | if test -n "$targ_32_little"; then |
218 | AC_DEFINE(HAVE_TARGET_32_LITTLE, 1, | |
219 | [Define to support 32-bit little-endian targets]) | |
220 | fi | |
221 | if test -n "$targ_32_big"; then | |
222 | AC_DEFINE(HAVE_TARGET_32_BIG, 1, | |
223 | [Define to support 32-bit big-endian targets]) | |
224 | fi | |
225 | if test -n "$targ_64_little"; then | |
226 | AC_DEFINE(HAVE_TARGET_64_LITTLE, 1, | |
227 | [Define to support 64-bit little-endian targets]) | |
228 | fi | |
229 | if test -n "$targ_64_big"; then | |
230 | AC_DEFINE(HAVE_TARGET_64_BIG, 1, | |
231 | [Define to support 64-bit big-endian targets]) | |
232 | fi | |
233 | ||
6df6da4a ILT |
234 | if test -n "$all_targets"; then |
235 | TARGETOBJS='$(ALL_TARGETOBJS)' | |
236 | else | |
237 | TARGETOBJS="$targetobjs" | |
238 | fi | |
239 | AC_SUBST(TARGETOBJS) | |
240 | ||
fbfba508 ILT |
241 | AC_DEFINE_UNQUOTED(GOLD_DEFAULT_MACHINE, $default_machine, |
242 | [Default machine code]) | |
243 | AC_DEFINE_UNQUOTED(GOLD_DEFAULT_SIZE, $default_size, | |
244 | [Default size (32 or 64)]) | |
245 | AC_DEFINE_UNQUOTED(GOLD_DEFAULT_BIG_ENDIAN, $default_big_endian, | |
246 | [Default big endian (true or false)]) | |
36959681 ILT |
247 | AC_DEFINE_UNQUOTED(GOLD_DEFAULT_OSABI, $default_osabi, |
248 | [Default OSABI code]) | |
fbfba508 | 249 | |
3f3cddf1 ILT |
250 | AC_ARG_WITH(lib-path, |
251 | [ --with-lib-path=dir1:dir2... set default LIB_PATH], | |
252 | [case "$withval" in | |
253 | yes) LIB_PATH='"/lib:/usr/lib"' ;; | |
254 | no) LIB_PATH='""' ;; | |
255 | *) LIB_PATH='"'"$withval"'"' ;; | |
256 | esac], | |
257 | [LIB_PATH='"::DEFAULT::"']) | |
258 | AC_DEFINE_UNQUOTED(LIB_PATH, $LIB_PATH, | |
259 | [Default library search path]) | |
260 | if test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias"; then | |
261 | AC_DEFINE(NATIVE_LINKER, 1, [Whether configured as a native linker]) | |
262 | fi | |
263 | ||
ebb300b2 CC |
264 | AC_CHECK_TOOL(NM, nm) |
265 | ||
bae7f79e ILT |
266 | AC_PROG_CC |
267 | AC_PROG_CXX | |
dbe717ef | 268 | AC_PROG_YACC |
5a6f7e2d | 269 | AC_PROG_RANLIB |
bae7f79e | 270 | AC_PROG_INSTALL |
537b5f51 | 271 | AC_PROG_LN_S |
fa99aa09 ILT |
272 | |
273 | AC_GNU_SOURCE | |
274 | ||
bae7f79e ILT |
275 | ZW_GNU_GETTEXT_SISTER_DIR |
276 | AM_PO_SUBDIRS | |
277 | ||
92e059d8 ILT |
278 | AC_C_BIGENDIAN |
279 | ||
bae7f79e ILT |
280 | AC_EXEEXT |
281 | ||
537b5f51 ILT |
282 | AM_CONDITIONAL(NATIVE_LINKER, |
283 | test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias") | |
284 | AM_CONDITIONAL(GCC, test "$GCC" = yes) | |
285 | ||
eb373049 ILT |
286 | AM_CONDITIONAL(NATIVE_OR_CROSS_LINKER, |
287 | test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias" -o "x$host_alias" = "x$build_alias") | |
288 | ||
328c7c2f ILT |
289 | dnl Test for whether static linking is supported. Some systems do not |
290 | dnl install static libraries. This only affects the set of tests that | |
291 | dnl we run. | |
292 | AC_CACHE_CHECK([whether static linking works], [gold_cv_lib_static], | |
dd7af074 | 293 | [LDFLAGS_hold=$LDFLAGS |
328c7c2f | 294 | LDFLAGS="$LDFLAGS -static" |
dd7af074 | 295 | AC_LINK_IFELSE([ |
328c7c2f | 296 | AC_LANG_PROGRAM([[void f() { }]])], |
dd7af074 ILT |
297 | [gold_cv_lib_static=yes], [gold_cv_lib_static=no]) |
298 | LDFLAGS=$LDFLAGS_hold]) | |
328c7c2f ILT |
299 | AM_CONDITIONAL(HAVE_STATIC, test "$gold_cv_lib_static" = "yes") |
300 | ||
63402fe4 ILT |
301 | dnl Some architectures do not support taking pointers of functions |
302 | dnl defined in shared libraries except in -fPIC mode. We need to | |
303 | dnl tell the unittest framework if we're compiling for one of those | |
304 | dnl targets, so it doesn't try to run the tests that do that. | |
305 | AM_CONDITIONAL(FN_PTRS_IN_SO_WITHOUT_PIC, [ | |
306 | case $target_cpu in | |
307 | i?86) true;; | |
308 | x86_64) false;; | |
11936fb1 | 309 | sparc64) false;; |
63402fe4 ILT |
310 | *) true;; |
311 | esac]) | |
312 | ||
084e2665 ILT |
313 | dnl Test for gcc 4.1 or later. Full support for -mcmodel=medium is |
314 | dnl only available in gcc 4.1. | |
315 | AC_CACHE_CHECK([for gcc >= 4.1], [gold_cv_prog_gcc41], | |
316 | [AC_COMPILE_IFELSE([ | |
317 | #if !defined __GNUC__ | |
318 | error | |
319 | #elif __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 1) | |
320 | error | |
321 | #endif | |
322 | ], [gold_cv_prog_gcc41=yes], [gold_cv_prog_gcc41=no])]) | |
323 | ||
24482ca0 L |
324 | save_CFLAGS="$CFLAGS" |
325 | CFLAGS="$CFLAGS -mcmodel=medium" | |
326 | AC_COMPILE_IFELSE([int i;], [have_mcmodel_medium=yes], [have_mcmodel_medium=no]) | |
327 | CFLAGS="$save_CFLAGS" | |
8a5e3e08 | 328 | dnl Whether we can test -mcmodel=medium. |
084e2665 | 329 | AM_CONDITIONAL(MCMODEL_MEDIUM, |
24482ca0 | 330 | [test "$target_cpu" = "x86_64" -a "$have_mcmodel_medium" = "yes" -a "$gold_cv_prog_gcc41" = "yes"]) |
8a5e3e08 | 331 | |
6eee141f | 332 | dnl Test for __thread support. |
097ec620 ILT |
333 | AC_CACHE_CHECK([for thread support], [gold_cv_c_thread], |
334 | [AC_COMPILE_IFELSE([__thread int i = 1;], | |
335 | [gold_cv_c_thread=yes], [gold_cv_c_thread=no])]) | |
336 | ||
337 | AM_CONDITIONAL(TLS, test "$gold_cv_c_thread" = "yes") | |
338 | ||
339 | dnl On GNU/Linux TLS in static programs only works when using glibc | |
340 | dnl 2.4 or later. | |
341 | AC_CACHE_CHECK([for glibc >= 2.4], [gold_cv_lib_glibc24], | |
342 | [AC_COMPILE_IFELSE([ | |
343 | #include <features.h> | |
344 | #if !defined __GLIBC__ | |
345 | error | |
346 | #elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 4) | |
347 | error | |
348 | #endif | |
349 | ], [gold_cv_lib_glibc24=yes], [gold_cv_lib_glibc24=no])]) | |
350 | ||
351 | AM_CONDITIONAL(STATIC_TLS, test "$gold_cv_lib_glibc24" = "yes") | |
6eee141f | 352 | |
155a0dd7 ILT |
353 | dnl Test for #pragma omp threadprivate |
354 | AC_CACHE_CHECK([for omp support], [gold_cv_c_threadprivate], | |
355 | [save_CFLAGS="$CFLAGS" | |
356 | CFLAGS="$CFLAGS -fopenmp" | |
357 | AC_COMPILE_IFELSE([ | |
358 | #include <omp.h> | |
359 | int i; | |
360 | #pragma omp threadprivate (i) | |
361 | ], [gold_cv_c_threadprivate=yes], [gold_cv_c_threadprivate=no]) | |
362 | CFLAGS="$save_CFLAGS"]) | |
363 | if test "$gold_cv_c_threadprivate" = "yes"; then | |
364 | AC_DEFINE(HAVE_OMP_SUPPORT, 1, | |
365 | [Define if compiler supports #pragma omp threadprivate]) | |
366 | fi | |
367 | AM_CONDITIONAL(OMP_SUPPORT, test "$gold_cv_c_threadprivate" = "yes") | |
368 | ||
c2b45e22 CC |
369 | dnl Test for the -ftls-dialect=gnu2 option. |
370 | save_CFLAGS="$CFLAGS" | |
63887f3d L |
371 | CFLAGS="$CFLAGS -fpic -mtls-dialect=gnu2" |
372 | AC_COMPILE_IFELSE([ | |
373 | __thread int i; | |
374 | void foo (void) | |
375 | { | |
376 | i = 10; | |
377 | } | |
378 | ], [have_tls_gnu2=yes], [have_tls_gnu2=no]) | |
c2b45e22 CC |
379 | CFLAGS="$save_CFLAGS" |
380 | AM_CONDITIONAL(TLS_GNU2_DIALECT, test "$have_tls_gnu2" = "yes") | |
381 | ||
382 | dnl On GNU/Linux TLS descriptors are supported by the dynamic loader | |
b0074644 ILT |
383 | dnl only with glibc 2.9 or later. |
384 | AC_CACHE_CHECK([for glibc >= 2.9], [gold_cv_lib_glibc29], | |
c2b45e22 CC |
385 | [AC_COMPILE_IFELSE([ |
386 | #include <features.h> | |
387 | #if !defined __GLIBC__ | |
388 | error | |
b0074644 | 389 | #elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 9) |
c2b45e22 CC |
390 | error |
391 | #endif | |
b0074644 | 392 | ], [gold_cv_lib_glibc29=yes], [gold_cv_lib_glibc29=no])]) |
c2b45e22 | 393 | |
b0074644 | 394 | AM_CONDITIONAL(TLS_DESCRIPTORS, test "$gold_cv_lib_glibc29" = "yes") |
c2b45e22 | 395 | |
1d1f116d CD |
396 | dnl Test for the -frandom-seed option. |
397 | AC_CACHE_CHECK([for -frandom-seed support], [gold_cv_c_random_seed], | |
398 | [save_CFLAGS="$CFLAGS" | |
399 | CFLAGS="$CFLAGS -frandom-seed=foo" | |
400 | AC_COMPILE_IFELSE([int i;], [gold_cv_c_random_seed=yes], | |
401 | [gold_cv_c_random_seed=no]) | |
402 | CFLAGS="$save_CFLAGS"]) | |
403 | if test "$gold_cv_c_random_seed" = "yes"; then | |
404 | # In Makefile, '$@' will be expanded to be the name of the file | |
405 | # being built, providing a unique seed for each file. | |
406 | RANDOM_SEED_CFLAGS=-frandom-seed=\$@ | |
407 | fi | |
408 | AC_SUBST(RANDOM_SEED_CFLAGS) | |
409 | ||
7223e9ca | 410 | dnl On GNU/Linux ifunc is supported by the dynamic linker in glibc |
d0773f31 | 411 | dnl 2.11 or later, and by binutils 2.20.1 or later. |
ebb300b2 CC |
412 | AC_CACHE_CHECK([for glibc ifunc support], [gold_cv_lib_glibc_ifunc], |
413 | [save_LDFLAGS="$LDFLAGS" | |
414 | LDFLAGS="$LDFLAGS -static" | |
415 | AC_LINK_IFELSE([AC_LANG_PROGRAM([[ | |
7223e9ca ILT |
416 | #include <features.h> |
417 | #if !defined __GLIBC__ | |
418 | error | |
419 | #elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 11) | |
420 | error | |
421 | #endif | |
ebb300b2 CC |
422 | void func (void) { } |
423 | void invoke (void); | |
424 | __asm__(".type invoke, %gnu_indirect_function"); | |
425 | typedef void (*funcptr) (void); | |
426 | funcptr dispatch (void) __asm__ ("invoke"); | |
427 | funcptr dispatch (void) { return &func; }]], | |
428 | [[invoke();]]) | |
429 | ], [ | |
430 | if ${NM} conftest$EXEEXT | grep "__rela\?_iplt_start" >/dev/null 2>&1; then | |
431 | gold_cv_lib_glibc_ifunc=both | |
432 | else | |
433 | gold_cv_lib_glibc_ifunc=dyn | |
434 | fi], [gold_cv_lib_glibc_ifunc=no]) | |
435 | LDFLAGS="$save_LDFLAGS"]) | |
7223e9ca | 436 | |
ebb300b2 CC |
437 | AM_CONDITIONAL(IFUNC, test "$gold_cv_lib_glibc_ifunc" != "no") |
438 | AM_CONDITIONAL(IFUNC_STATIC, test "$gold_cv_lib_glibc_ifunc" = "both") | |
7223e9ca | 439 | |
bae7f79e ILT |
440 | AM_BINUTILS_WARNINGS |
441 | ||
2ea97941 | 442 | WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//' -e 's/-Wshadow//'` |
bae7f79e ILT |
443 | AC_SUBST(WARN_CXXFLAGS) |
444 | ||
dc87f620 ILT |
445 | AC_ARG_WITH(gold-ldflags, |
446 | [ --with-gold-ldflags=FLAGS additional link flags for gold], | |
447 | [if test "$withval" = "no" -o "$withval" = "yes"; then | |
448 | GOLD_LDFLAGS= | |
449 | else | |
450 | GOLD_LDFLAGS=$withval | |
451 | fi], | |
452 | [GOLD_LDFLAGS=]) | |
453 | AC_SUBST(GOLD_LDFLAGS) | |
454 | ||
455 | AC_ARG_WITH(gold-ldadd, | |
456 | [ --with-gold-ldadd=LIBS additional libraries for gold], | |
457 | [if test "$withval" = "no" -o "$withval" = "yes"; then | |
458 | GOLD_LDADD= | |
459 | else | |
460 | GOLD_LDADD=$withval | |
461 | fi], | |
462 | [GOLD_LDADD=]) | |
463 | AC_SUBST(GOLD_LDADD) | |
464 | ||
bae7f79e ILT |
465 | dnl Force support for large files by default. This may need to be |
466 | dnl host dependent. If build == host, we can check getconf LFS_CFLAGS. | |
494e05f4 ILT |
467 | LFS_CFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" |
468 | AC_SUBST(LFS_CFLAGS) | |
bae7f79e | 469 | |
88597d34 ILT |
470 | AC_CHECK_HEADERS(sys/mman.h) |
471 | AC_CHECK_FUNCS(chsize mmap) | |
472 | AC_REPLACE_FUNCS(pread ftruncate ffsll) | |
473 | ||
474 | AC_CACHE_CHECK([mremap with MREMAP_MAYMOVE], [gold_cv_lib_mremap_maymove], | |
475 | [AC_LINK_IFELSE([ | |
476 | AC_LANG_PROGRAM([[ | |
477 | #include <sys/mman.h> | |
478 | void f() { mremap (0, 0, 0, MREMAP_MAYMOVE); } | |
479 | ]])], [gold_cv_lib_mremap_maymove=yes], [gold_cv_lib_mremap_maymove=no])]) | |
480 | if test "$gold_cv_lib_mremap_maymove" = "yes"; then | |
481 | AC_DEFINE(HAVE_MREMAP, 1, | |
482 | [Define to 1 if you have the mremap function with MREMAP_MAYMOVE support]) | |
483 | else | |
484 | AC_LIBOBJ(mremap) | |
485 | fi | |
82dcae9d | 486 | |
9a0910c3 ILT |
487 | # Link in zlib if we can. This allows us to write compressed sections. |
488 | AC_SEARCH_LIBS(zlibVersion, z, [AC_CHECK_HEADERS(zlib.h)]) | |
7fcd0256 | 489 | AM_CONDITIONAL(HAVE_ZLIB, test "$ac_cv_search_zlibVersion" != "no") |
9a0910c3 | 490 | |
0639a6f6 ILT |
491 | dnl We have to check these in C, not C++, because autoconf generates |
492 | dnl tests which have no type information, and current glibc provides | |
493 | dnl multiple declarations of functions like basename when compiling | |
494 | dnl with C++. | |
495 | AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf, strverscmp]) | |
496 | ||
54dc6425 | 497 | AC_LANG_PUSH(C++) |
d288e464 | 498 | |
54dc6425 ILT |
499 | AC_CHECK_HEADERS(tr1/unordered_set tr1/unordered_map) |
500 | AC_CHECK_HEADERS(ext/hash_map ext/hash_set) | |
15d5fa16 | 501 | AC_CHECK_HEADERS(byteswap.h) |
d675ff46 | 502 | AC_CHECK_FUNCS(mallinfo posix_fallocate readv sysconf times) |
3d857b98 | 503 | AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf, strverscmp, strndup, memmem]) |
d288e464 | 504 | |
40fde488 CD |
505 | # Use of ::std::tr1::unordered_map::rehash causes undefined symbols |
506 | # at link time with some versions of GCC. | |
507 | AC_CACHE_CHECK([whether ::std::tr1::unordered_map::rehash is usable.], | |
508 | [gold_cv_unordered_map_rehash], | |
509 | [AC_LINK_IFELSE([AC_LANG_PROGRAM([[ | |
510 | #include <tr1/unordered_map> | |
511 | void bar() { ::std::tr1::unordered_map<int, int> x; x.rehash(10); } | |
512 | ]])], [gold_cv_unordered_map_rehash=yes], [gold_cv_unordered_map_rehash=no])]) | |
513 | if test "$gold_cv_unordered_map_rehash" = "yes"; then | |
514 | AC_DEFINE(HAVE_TR1_UNORDERED_MAP_REHASH, 1, | |
515 | [Define if ::std::tr1::unordered_map::rehash is usable]) | |
516 | fi | |
517 | ||
04bf7072 ILT |
518 | # gcc 4.3.0 doesn't recognize the printf attribute on a template |
519 | # function. Check for that. This is gcc bug 35546. This test can | |
520 | # probably be removed after the bug has been fixed for a while. | |
521 | AC_CACHE_CHECK([whether we can use attributes with template functions], | |
522 | [gold_cv_template_attribute], | |
523 | [AC_COMPILE_IFELSE([ | |
524 | template<typename T> extern void foo(const char*, ...) | |
525 | __attribute__ ((__format__ (__printf__, 1, 2))); | |
526 | template<typename T> void foo(const char* format, ...) {} | |
527 | void bar() { foo<int>("%s\n", "foo"); } | |
528 | ], [gold_cv_template_attribute=yes], [gold_cv_template_attribute=no])]) | |
529 | if test "$gold_cv_template_attribute" = "yes"; then | |
530 | AC_DEFINE(HAVE_TEMPLATE_ATTRIBUTES, 1, | |
531 | [Define if attributes work on C++ templates]) | |
532 | fi | |
533 | ||
5d329b7d ILT |
534 | dnl Check if the system has struct stat::st_mtim. |
535 | AC_CACHE_CHECK([for struct stat::st_mtim.], | |
536 | [gold_cv_stat_st_mtim], | |
537 | [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ | |
538 | #include <sys/stat.h> | |
539 | long bar() { struct stat s; return (long)(s.st_mtim.tv_sec + s.st_mtim.tv_sec);} | |
540 | ]])], [gold_cv_stat_st_mtim=yes], [gold_cv_stat_st_mtim=no])]) | |
541 | if test "$gold_cv_stat_st_mtim" = "yes"; then | |
542 | AC_DEFINE(HAVE_STAT_ST_MTIM, 1, | |
543 | [Define if struct stat has a field st_mtim with timespec for mtime]) | |
544 | fi | |
545 | ||
54dc6425 ILT |
546 | AC_LANG_POP(C++) |
547 | ||
58797674 | 548 | AC_CHECK_HEADERS(locale.h) |
44350750 NC |
549 | AC_CHECK_FUNCS(setlocale) |
550 | AM_LC_MESSAGES | |
551 | ||
bae7f79e ILT |
552 | AM_MAINTAINER_MODE |
553 | ||
5a6f7e2d | 554 | AC_OUTPUT(Makefile testsuite/Makefile po/Makefile.in:po/Make-in) |