]>
Commit | Line | Data |
---|---|---|
f4017d20 | 1 | dnl Process this file with autoconf to produce a configure script. |
f7934be8 | 2 | dnl Note we do not use AC_PREREQ here! See aclocal.m4 for what we use instead. |
f318beb8 | 3 | AC_INIT([GNU C Library], [(see version.h)], [http://sourceware.org/bugzilla/], [glibc]) |
5d77b1da | 4 | AC_CONFIG_SRCDIR([include/features.h]) |
6b7f6183 RM |
5 | AC_CONFIG_HEADERS([config.h]) |
6 | AC_CONFIG_AUX_DIR([scripts]) | |
28f540f4 | 7 | |
8b748aed JM |
8 | ACX_PKGVERSION([GNU libc]) |
9 | ACX_BUGURL([http://www.gnu.org/software/libc/bugs.html]) | |
10 | AC_DEFINE_UNQUOTED([PKGVERSION], ["$PKGVERSION"], | |
11 | [Package description]) | |
12 | AC_DEFINE_UNQUOTED([REPORT_BUGS_TO], ["$REPORT_BUGS_TO"], | |
13 | [Bug reporting address]) | |
14 | ||
918b5606 L |
15 | # Glibc should not depend on any header files |
16 | AC_DEFUN([_AC_INCLUDES_DEFAULT_REQUIREMENTS], | |
17 | [m4_divert_text([DEFAULTS], | |
18 | [ac_includes_default='/* none */'])]) | |
19 | ||
bb931195 TS |
20 | # We require GCC, and by default use its preprocessor. Override AC_PROG_CPP |
21 | # here to work around the Autoconf issue discussed in | |
22 | # <http://sourceware.org/ml/libc-alpha/2013-01/msg00721.html>. | |
23 | AC_DEFUN([AC_PROG_CPP], | |
24 | [AC_REQUIRE([AC_PROG_CC])dnl | |
25 | AC_ARG_VAR([CPP], [C preprocessor])dnl | |
26 | _AC_ARG_VAR_CPPFLAGS()dnl | |
27 | # On Suns, sometimes $CPP names a directory. | |
28 | if test -n "$CPP" && test -d "$CPP"; then | |
29 | CPP= | |
30 | fi | |
31 | if test -z "$CPP"; then | |
32 | CPP="$CC -E" | |
33 | fi | |
34 | AC_SUBST(CPP)dnl | |
35 | ])# AC_PROG_CPP | |
36 | ||
b5a5da23 TS |
37 | # We require GCC. Override _AC_PROG_CC_C89 here to work around the Autoconf |
38 | # issue discussed in | |
39 | # <http://sourceware.org/ml/libc-alpha/2013-01/msg00757.html>. | |
40 | AC_DEFUN([_AC_PROG_CC_C89], [[$1]]) | |
41 | ||
7967983f RM |
42 | dnl This is here so we can set $subdirs directly based on configure fragments. |
43 | AC_CONFIG_SUBDIRS() | |
44 | ||
c16a054d AS |
45 | AC_CANONICAL_HOST |
46 | ||
c0bac8b0 UD |
47 | AC_PROG_CC |
48 | if test $host != $build; then | |
49 | AC_CHECK_PROGS(BUILD_CC, gcc cc) | |
50 | fi | |
51 | AC_SUBST(cross_compiling) | |
52 | AC_PROG_CPP | |
e4693aa7 RM |
53 | AC_CHECK_TOOL(READELF, readelf, false) |
54 | ||
c0bac8b0 UD |
55 | # We need the C++ compiler only for testing. |
56 | AC_PROG_CXX | |
e4693aa7 RM |
57 | # It's useless to us if it can't link programs (e.g. missing -lstdc++). |
58 | AC_CACHE_CHECK([whether $CXX can link programs], libc_cv_cxx_link_ok, [dnl | |
59 | AC_LANG_PUSH([C++]) | |
d337ceb7 | 60 | # Default, dynamic case. |
e4693aa7 RM |
61 | AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], |
62 | [libc_cv_cxx_link_ok=yes], | |
63 | [libc_cv_cxx_link_ok=no]) | |
d337ceb7 FW |
64 | # Static case. |
65 | old_LDFLAGS="$LDFLAGS" | |
66 | LDFLAGS="$LDFLAGS -static" | |
67 | AC_LINK_IFELSE([AC_LANG_SOURCE([ | |
68 | #include <iostream> | |
69 | ||
70 | int | |
71 | main() | |
72 | { | |
73 | std::cout << "Hello, world!"; | |
74 | return 0; | |
75 | } | |
76 | ])], | |
77 | [], | |
78 | [libc_cv_cxx_link_ok=no]) | |
79 | LDFLAGS="$old_LDFLAGS" | |
e4693aa7 RM |
80 | AC_LANG_POP([C++])]) |
81 | AS_IF([test $libc_cv_cxx_link_ok != yes], [CXX=]) | |
c0bac8b0 | 82 | |
c72637d4 RM |
83 | if test "`cd $srcdir; /bin/pwd`" = "`/bin/pwd`"; then |
84 | AC_MSG_ERROR([you must configure in a separate build directory]) | |
85 | fi | |
86 | ||
28f540f4 RM |
87 | # This will get text that should go into config.make. |
88 | config_vars= | |
89 | ||
c8f3e6db | 90 | # Check for a --with-gd argument and set libgd-LDFLAGS in config.make. |
6b7f6183 | 91 | AC_ARG_WITH([gd], |
77e8bddf AS |
92 | AC_HELP_STRING([--with-gd=DIR], |
93 | [find libgd include dir and library with prefix DIR]), | |
c8f3e6db UD |
94 | [dnl |
95 | case "$with_gd" in | |
f5f7239f UD |
96 | yes|''|no) ;; |
97 | *) libgd_include="-I$withval/include" | |
c8f3e6db UD |
98 | libgd_ldflags="-L$withval/lib" ;; |
99 | esac | |
100 | ]) | |
6b7f6183 | 101 | AC_ARG_WITH([gd-include], |
77e8bddf AS |
102 | AC_HELP_STRING([--with-gd-include=DIR], |
103 | [find libgd include files in DIR]), | |
104 | [dnl | |
f5f7239f UD |
105 | case "$with_gd_include" in |
106 | ''|no) ;; | |
107 | *) libgd_include="-I$withval" ;; | |
108 | esac | |
109 | ]) | |
6b7f6183 | 110 | AC_ARG_WITH([gd-lib], |
77e8bddf AS |
111 | AC_HELP_STRING([--with-gd-lib=DIR], |
112 | [find libgd library files in DIR]), | |
113 | [dnl | |
f5f7239f UD |
114 | case "$with_gd_lib" in |
115 | ''|no) ;; | |
116 | *) libgd_ldflags="-L$withval" ;; | |
117 | esac | |
118 | ]) | |
119 | ||
120 | if test -n "$libgd_include"; then | |
121 | config_vars="$config_vars | |
cf90163d | 122 | CFLAGS-memusagestat.c = $libgd_include" |
f5f7239f UD |
123 | fi |
124 | if test -n "$libgd_ldflags"; then | |
125 | config_vars="$config_vars | |
126 | libgd-LDFLAGS = $libgd_ldflags" | |
127 | fi | |
28f540f4 | 128 | |
ff3d7ed3 | 129 | dnl Arguments to specify presence of other packages/features. |
6b7f6183 | 130 | AC_ARG_WITH([fp], |
77e8bddf AS |
131 | AC_HELP_STRING([--with-fp], |
132 | [if using floating-point hardware @<:@default=yes@:>@]), | |
6b7f6183 RM |
133 | [with_fp=$withval], |
134 | [with_fp=yes]) | |
675322a5 | 135 | AC_SUBST(with_fp) |
6b7f6183 | 136 | AC_ARG_WITH([binutils], |
77e8bddf AS |
137 | AC_HELP_STRING([--with-binutils=PATH], |
138 | [specify location of binutils (as and ld)]), | |
6b7f6183 RM |
139 | [path_binutils=$withval], |
140 | [path_binutils='']) | |
2fff3d93 | 141 | AC_ARG_WITH([selinux], |
77e8bddf AS |
142 | AC_HELP_STRING([--with-selinux], |
143 | [if building with SELinux support]), | |
2fff3d93 UD |
144 | [with_selinux=$withval], |
145 | [with_selinux=auto]) | |
28f540f4 | 146 | |
6b7f6183 | 147 | AC_ARG_WITH([headers], |
77e8bddf AS |
148 | AC_HELP_STRING([--with-headers=PATH], |
149 | [location of system headers to use | |
6b7f6183 RM |
150 | (for example /usr/src/linux/include) |
151 | @<:@default=compiler default@:>@]), | |
152 | [sysheaders=$withval], | |
153 | [sysheaders='']) | |
c91c505f | 154 | AC_SUBST(sysheaders) |
dbe7a0f5 | 155 | |
f781ef40 RM |
156 | AC_SUBST(use_default_link) |
157 | AC_ARG_WITH([default-link], | |
158 | AC_HELP_STRING([--with-default-link], | |
fd5e21c7 | 159 | [do not use explicit linker scripts]), |
f781ef40 | 160 | [use_default_link=$withval], |
fd5e21c7 | 161 | [use_default_link=default]) |
f781ef40 | 162 | |
6b7f6183 | 163 | AC_ARG_ENABLE([sanity-checks], |
77e8bddf AS |
164 | AC_HELP_STRING([--disable-sanity-checks], |
165 | [really do not use threads (should not be used except in special situations) @<:@default=yes@:>@]), | |
6b7f6183 RM |
166 | [enable_sanity=$enableval], |
167 | [enable_sanity=yes]) | |
a18f587d | 168 | |
6b7f6183 | 169 | AC_ARG_ENABLE([shared], |
77e8bddf | 170 | AC_HELP_STRING([--enable-shared], |
a0da5fe1 | 171 | [build shared library @<:@default=yes if GNU ld@:>@]), |
6b7f6183 | 172 | [shared=$enableval], |
a0da5fe1 | 173 | [shared=yes]) |
6b7f6183 | 174 | AC_ARG_ENABLE([profile], |
77e8bddf AS |
175 | AC_HELP_STRING([--enable-profile], |
176 | [build profiled library @<:@default=no@:>@]), | |
6b7f6183 | 177 | [profile=$enableval], |
11bf311e | 178 | [profile=no]) |
1cba4036 MF |
179 | AC_ARG_ENABLE([timezone-tools], |
180 | AC_HELP_STRING([--disable-timezone-tools], | |
44f826e3 | 181 | [do not install timezone tools @<:@default=install@:>@]), |
1cba4036 MF |
182 | [enable_timezone_tools=$enableval], |
183 | [enable_timezone_tools=yes]) | |
184 | AC_SUBST(enable_timezone_tools) | |
6b7f6183 | 185 | |
740b3dbe L |
186 | AC_ARG_ENABLE([hardcoded-path-in-tests], |
187 | AC_HELP_STRING([--enable-hardcoded-path-in-tests], | |
188 | [hardcode newly built glibc path in tests @<:@default=no@:>@]), | |
189 | [hardcoded_path_in_tests=$enableval], | |
190 | [hardcoded_path_in_tests=no]) | |
191 | AC_SUBST(hardcoded_path_in_tests) | |
192 | ||
35f1e827 UD |
193 | AC_ARG_ENABLE([stackguard-randomization], |
194 | AC_HELP_STRING([--enable-stackguard-randomization], | |
195 | [initialize __stack_chk_guard canary with a random number at program start]), | |
196 | [enable_stackguard_randomize=$enableval], | |
197 | [enable_stackguard_randomize=no]) | |
198 | if test "$enable_stackguard_randomize" = yes; then | |
199 | AC_DEFINE(ENABLE_STACKGUARD_RANDOMIZE) | |
200 | fi | |
201 | ||
1717da59 AK |
202 | AC_ARG_ENABLE([lock-elision], |
203 | AC_HELP_STRING([--enable-lock-elision[=yes/no]], | |
52dfbe13 | 204 | [Enable lock elision for pthread mutexes by default]), |
1717da59 AK |
205 | [enable_lock_elision=$enableval], |
206 | [enable_lock_elision=no]) | |
5a414ff7 | 207 | AC_SUBST(enable_lock_elision) |
1717da59 AK |
208 | if test "$enable_lock_elision" = yes ; then |
209 | AC_DEFINE(ENABLE_LOCK_ELISION) | |
210 | fi | |
211 | ||
6b3a2224 | 212 | dnl Generic infrastructure for drop-in additions to libc. |
6b7f6183 | 213 | AC_ARG_ENABLE([add-ons], |
77e8bddf AS |
214 | AC_HELP_STRING([--enable-add-ons@<:@=DIRS...@:>@], |
215 | [configure and build add-ons in DIR1,DIR2,... | |
216 | search for add-ons if no parameter given]), | |
e0a3ed4f | 217 | , [enable_add_ons=yes]) |
61952351 | 218 | |
6b7f6183 | 219 | AC_ARG_ENABLE([hidden-plt], |
77e8bddf AS |
220 | AC_HELP_STRING([--disable-hidden-plt], |
221 | [do not hide internal function calls to avoid PLT]), | |
6b7f6183 RM |
222 | [hidden=$enableval], |
223 | [hidden=yes]) | |
749a9a4f RM |
224 | if test "x$hidden" = xno; then |
225 | AC_DEFINE(NO_HIDDEN) | |
226 | fi | |
227 | ||
4df8c11d UD |
228 | AC_ARG_ENABLE([bind-now], |
229 | AC_HELP_STRING([--enable-bind-now], | |
230 | [disable lazy relocations in DSOs]), | |
231 | [bindnow=$enableval], | |
232 | [bindnow=no]) | |
233 | AC_SUBST(bindnow) | |
234 | ||
5107cf1d UD |
235 | dnl On some platforms we cannot use dynamic loading. We must provide |
236 | dnl static NSS modules. | |
6b7f6183 | 237 | AC_ARG_ENABLE([static-nss], |
77e8bddf AS |
238 | AC_HELP_STRING([--enable-static-nss], |
239 | [build static NSS modules @<:@default=no@:>@]), | |
6b7f6183 RM |
240 | [static_nss=$enableval], |
241 | [static_nss=no]) | |
834cef7c UD |
242 | dnl Enable static NSS also if we build no shared objects. |
243 | if test x"$static_nss" = xyes || test x"$shared" = xno; then | |
3172f58f | 244 | static_nss=yes |
5107cf1d UD |
245 | AC_DEFINE(DO_STATIC_NSS) |
246 | fi | |
247 | ||
6b7f6183 | 248 | AC_ARG_ENABLE([force-install], |
77e8bddf AS |
249 | AC_HELP_STRING([--disable-force-install], |
250 | [don't force installation of files from this package, even if they are older than the installed files]), | |
6b7f6183 RM |
251 | [force_install=$enableval], |
252 | [force_install=yes]) | |
73237de3 UD |
253 | AC_SUBST(force_install) |
254 | ||
8894bad3 AM |
255 | AC_ARG_ENABLE([maintainer-mode], |
256 | AC_HELP_STRING([--enable-maintainer-mode], | |
257 | [enable make rules and dependencies not useful (and sometimes confusing) to the casual installer]), | |
258 | [maintainer=$enableval], | |
259 | [maintainer=no]) | |
260 | ||
958f238f UD |
261 | dnl On some platforms we allow dropping compatibility with all kernel |
262 | dnl versions. | |
6b7f6183 | 263 | AC_ARG_ENABLE([kernel], |
77e8bddf AS |
264 | AC_HELP_STRING([--enable-kernel=VERSION], |
265 | [compile for compatibility with kernel not older than VERSION]), | |
6b7f6183 RM |
266 | [minimum_kernel=$enableval], |
267 | []) | |
86cfe82d UD |
268 | dnl Prevent unreasonable values. |
269 | if test "$minimum_kernel" = yes || test "$minimum_kernel" = no; then | |
270 | # Better nothing than this. | |
271 | minimum_kernel="" | |
269e369f UD |
272 | else |
273 | if test "$minimum_kernel" = current; then | |
274 | minimum_kernel=`uname -r 2>/dev/null` || minimum_kernel= | |
275 | fi | |
86cfe82d | 276 | fi |
958f238f | 277 | |
6cc7d725 UD |
278 | dnl For the development we sometimes want gcc to issue even more warnings. |
279 | dnl This is not the default since many of the extra warnings are not | |
280 | dnl appropriate. | |
6b7f6183 RM |
281 | AC_ARG_ENABLE([all-warnings], |
282 | AC_HELP_STRING([--enable-all-warnings], | |
77e8bddf | 283 | [enable all useful warnings gcc can issue]), |
6b7f6183 RM |
284 | [all_warnings=$enableval], |
285 | []) | |
6cc7d725 UD |
286 | AC_SUBST(all_warnings) |
287 | ||
a4ecc9eb JM |
288 | AC_ARG_ENABLE([werror], |
289 | AC_HELP_STRING([--disable-werror], | |
290 | [do not build with -Werror]), | |
291 | [enable_werror=$enableval], | |
292 | [enable_werror=yes]) | |
293 | AC_SUBST(enable_werror) | |
294 | ||
425ce2ed UD |
295 | AC_ARG_ENABLE([multi-arch], |
296 | AC_HELP_STRING([--enable-multi-arch], | |
297 | [enable single DSO with optimizations for multiple architectures]), | |
298 | [multi_arch=$enableval], | |
6f89d2f3 | 299 | [multi_arch=default]) |
425ce2ed | 300 | |
ff886b82 UD |
301 | AC_ARG_ENABLE([nss-crypt], |
302 | AC_HELP_STRING([--enable-nss-crypt], | |
303 | [enable libcrypt to use nss]), | |
304 | [nss_crypt=$enableval], | |
305 | [nss_crypt=no]) | |
306 | if test x$nss_crypt = xyes; then | |
307 | nss_includes=-I$(nss-config --includedir 2>/dev/null) | |
308 | if test $? -ne 0; then | |
309 | AC_MSG_ERROR([cannot find include directory with nss-config]) | |
310 | fi | |
311 | old_CFLAGS="$CFLAGS" | |
312 | CFLAGS="$CFLAGS $nss_includes" | |
b68e08db | 313 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([typedef int PRBool; |
ff886b82 UD |
314 | #include <hasht.h> |
315 | #include <nsslowhash.h> | |
b68e08db | 316 | void f (void) { NSSLOW_Init (); }])], |
ff886b82 UD |
317 | libc_cv_nss_crypt=yes, |
318 | AC_MSG_ERROR([ | |
319 | cannot find NSS headers with lowlevel hash function interfaces])) | |
320 | old_LIBS="$LIBS" | |
321 | LIBS="$LIBS -lfreebl3" | |
322 | AC_LINK_IFELSE([AC_LANG_PROGRAM([typedef int PRBool; | |
323 | #include <hasht.h> | |
324 | #include <nsslowhash.h>], | |
325 | [NSSLOW_Init();])], | |
326 | libc_cv_nss_crypt=yes, | |
327 | AC_MSG_ERROR([ | |
328 | cannot link program using lowlevel NSS hash functions])) | |
329 | CFLAGS="$old_CFLAGS" | |
330 | LIBS="$old_LIBS" | |
331 | else | |
332 | libc_cv_nss_crypt=no | |
333 | fi | |
334 | AC_SUBST(libc_cv_nss_crypt) | |
335 | ||
3a097cc7 | 336 | |
021db4be AJ |
337 | AC_ARG_ENABLE([obsolete-rpc], |
338 | AC_HELP_STRING([--enable-obsolete-rpc], | |
339 | [build and install the obsolete RPC code for link-time usage]), | |
340 | [link_obsolete_rpc=$enableval], | |
341 | [link_obsolete_rpc=no]) | |
342 | AC_SUBST(link_obsolete_rpc) | |
343 | ||
344 | if test "$link_obsolete_rpc" = yes; then | |
345 | AC_DEFINE(LINK_OBSOLETE_RPC) | |
346 | fi | |
347 | ||
3a097cc7 RM |
348 | AC_ARG_ENABLE([systemtap], |
349 | [AS_HELP_STRING([--enable-systemtap], | |
350 | [enable systemtap static probe points @<:@default=no@:>@])], | |
351 | [systemtap=$enableval], | |
352 | [systemtap=no]) | |
353 | if test "x$systemtap" != xno; then | |
354 | AC_CACHE_CHECK([for systemtap static probe support], libc_cv_sdt, [dnl | |
355 | old_CFLAGS="$CFLAGS" | |
783dd2d3 | 356 | CFLAGS="-std=gnu11 $CFLAGS" |
0e3933b9 | 357 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([[#include <sys/sdt.h> |
3a097cc7 RM |
358 | void foo (int i, void *p) |
359 | { | |
360 | asm ("" STAP_PROBE_ASM (foo, bar, STAP_PROBE_ASM_TEMPLATE (2)) "" | |
361 | :: STAP_PROBE_ASM_OPERANDS (2, i, p)); | |
0e3933b9 | 362 | }]])], [libc_cv_sdt=yes], [libc_cv_sdt=no]) |
3a097cc7 RM |
363 | CFLAGS="$old_CFLAGS"]) |
364 | if test $libc_cv_sdt = yes; then | |
365 | AC_DEFINE([USE_STAP_PROBE]) | |
366 | elif test "x$systemtap" != xauto; then | |
367 | AC_MSG_FAILURE([systemtap support needs sys/sdt.h with asm support]) | |
368 | fi | |
369 | fi | |
370 | ||
c53d909c RM |
371 | AC_ARG_ENABLE([build-nscd], |
372 | [AS_HELP_STRING([--disable-build-nscd], | |
373 | [disable building and installing the nscd daemon])], | |
374 | [build_nscd=$enableval], | |
375 | [build_nscd=default]) | |
376 | AC_SUBST(build_nscd) | |
377 | ||
3cc3ef96 RM |
378 | # Note the use of $use_nscd is near the bottom of the file. |
379 | AC_ARG_ENABLE([nscd], | |
380 | [AS_HELP_STRING([--disable-nscd], | |
381 | [library functions will not contact the nscd daemon])], | |
382 | [use_nscd=$enableval], | |
383 | [use_nscd=yes]) | |
384 | ||
e4608715 CD |
385 | AC_ARG_ENABLE([pt_chown], |
386 | [AS_HELP_STRING([--enable-pt_chown], | |
387 | [Enable building and installing pt_chown])], | |
388 | [build_pt_chown=$enableval], | |
389 | [build_pt_chown=no]) | |
390 | AC_SUBST(build_pt_chown) | |
8c12f01d | 391 | if test "$build_pt_chown" = yes; then |
e4608715 CD |
392 | AC_DEFINE(HAVE_PT_CHOWN) |
393 | fi | |
394 | ||
ebf27d12 ST |
395 | # The abi-tags file uses a fairly simplistic model for name recognition that |
396 | # can't distinguish i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a | |
397 | # $host_os of `gnu*' here to be `gnu-gnu*' just so that it can tell. | |
398 | # This doesn't get used much beyond that, so it's fairly safe. | |
399 | case "$host_os" in | |
400 | linux*) | |
401 | ;; | |
402 | gnu*) | |
403 | host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'` | |
404 | ;; | |
405 | esac | |
406 | ||
5695d46f AS |
407 | AC_ARG_ENABLE([mathvec], |
408 | [AS_HELP_STRING([--enable-mathvec], | |
409 | [Enable building and installing mathvec @<:@default depends on architecture@:>@])], | |
410 | [build_mathvec=$enableval], | |
411 | [build_mathvec=notset]) | |
412 | ||
28f540f4 RM |
413 | # We keep the original values in `$config_*' and never modify them, so we |
414 | # can write them unchanged into config.make. Everything else uses | |
415 | # $machine, $vendor, and $os, and changes them whenever convenient. | |
416 | config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os | |
417 | ||
2f64b655 UD |
418 | # Don't allow vendor == "unknown" |
419 | test "$config_vendor" = unknown && config_vendor= | |
420 | config_os="`echo $config_os | sed 's/^unknown-//'`" | |
421 | ||
a2fe9c76 | 422 | # Some configurations imply other options. |
0269750c | 423 | elf=yes |
a2fe9c76 | 424 | |
8f73811b RM |
425 | # The configure fragment of an add-on port can modify these to supplement |
426 | # or override the table in the case statement below. No fragment should | |
427 | # ever change the config_* variables, however. | |
28f540f4 RM |
428 | machine=$config_machine |
429 | vendor=$config_vendor | |
430 | os=$config_os | |
b22d21b3 | 431 | base_os='' |
28f540f4 | 432 | |
2ceaa76a RM |
433 | submachine= |
434 | AC_ARG_WITH([cpu], | |
435 | AS_HELP_STRING([--with-cpu=CPU], [select code for CPU variant]), | |
436 | [dnl | |
437 | case "$withval" in | |
438 | yes|'') AC_MSG_ERROR([--with-cpu requires an argument]) ;; | |
439 | no) ;; | |
440 | *) submachine="$withval" ;; | |
441 | esac | |
442 | ]) | |
443 | ||
05439291 RM |
444 | # An preconfigure script can set this when it wants to disable the sanity |
445 | # check below. | |
446 | libc_config_ok=no | |
447 | ||
10a803e0 RM |
448 | dnl Let sysdeps/*/preconfigure act here, like they can in add-ons. |
449 | LIBC_PRECONFIGURE([$srcdir], [for sysdeps]) | |
450 | ||
8f73811b RM |
451 | dnl Having this here, though empty, makes sure that if add-ons' fragments |
452 | dnl do AC_CONFIG_SUBDIRS([some-dir]), which just sets $subdirs, then | |
453 | dnl our AC_OUTPUT will actually use it. | |
454 | AC_CONFIG_SUBDIRS() | |
455 | ||
e0a3ed4f RM |
456 | case "$enable_add_ons" in |
457 | ''|no) add_ons= ;; | |
458 | yes|'*') | |
459 | add_ons=`cd $srcdir && ls -d 2> /dev/null */configure */sysdeps | | |
460 | sed 's@/[[^/]]*$@@' | sort | uniq` | |
461 | add_ons_automatic=yes | |
462 | ;; | |
463 | *) add_ons=`echo "$enable_add_ons" | sed 's/,/ /g'` | |
464 | add_ons_automatic=no ;; | |
465 | esac | |
466 | ||
467 | configured_add_ons= | |
8f73811b RM |
468 | add_ons_sfx= |
469 | add_ons_pfx= | |
470 | if test x"$add_ons" != x; then | |
471 | for f in $add_ons; do | |
472 | # Some sanity checks | |
473 | case "$f" in | |
474 | crypt) | |
475 | AC_MSG_ERROR([ | |
476 | *** It seems that you're using an old \`crypt' add-on. crypt is now | |
477 | *** part of glibc and using the old add-on will not work with this | |
478 | *** release. Start again with fresh sources and without the old | |
479 | *** \`crypt' add-on.]) | |
480 | ;; | |
481 | localedata) | |
482 | AC_MSG_ERROR([ | |
483 | *** It seems that you're using an old \`localedata' add-on. localedata | |
484 | *** is now part of glibc and using the old add-on will not work with | |
485 | *** this release. Start again with fresh sources and without the old | |
486 | *** \`localedata' add-on.]) | |
487 | ;; | |
488 | esac | |
8f73811b RM |
489 | done |
490 | ||
9382fcee | 491 | # Now source each add-on's configure fragment. |
c80e931a RM |
492 | # The fragments can use $srcdir/$libc_add_on to find themselves, |
493 | # and test $add_ons_automatic to see if they were explicitly requested. | |
494 | # A fragment can clear (or even change) $libc_add_on to affect | |
495 | # whether it goes into the list to be actually used in the build. | |
496 | use_add_ons= | |
9382fcee | 497 | for libc_add_on in $add_ons; do |
e0a3ed4f RM |
498 | # Test whether such a directory really exists. |
499 | # It can be absolute, or relative to $srcdir, or relative to the build dir. | |
500 | case "$libc_add_on" in | |
501 | /*) | |
502 | libc_add_on_srcdir=$libc_add_on | |
503 | ;; | |
504 | *) | |
505 | test -d "$srcdir/$libc_add_on" || { | |
77e8bddf | 506 | if test -d "$libc_add_on"; then |
e0a3ed4f RM |
507 | libc_add_on="`pwd`/$libc_add_on" |
508 | else | |
509 | AC_MSG_ERROR(add-on directory \"$libc_add_on\" does not exist) | |
510 | fi | |
511 | } | |
512 | libc_add_on_srcdir=$srcdir/$libc_add_on | |
513 | ;; | |
514 | esac | |
515 | ||
516 | libc_add_on_frag=$libc_add_on_srcdir/configure | |
517 | libc_add_on_canonical= | |
7967983f | 518 | libc_add_on_config_subdirs= |
e0a3ed4f RM |
519 | if test -r "$libc_add_on_frag"; then |
520 | AC_MSG_NOTICE(running configure fragment for add-on $libc_add_on) | |
521 | libc_add_on_canonical=unknown | |
522 | libc_add_on_subdirs= | |
523 | . "$libc_add_on_frag" | |
524 | test -z "$libc_add_on" || { | |
77e8bddf | 525 | configured_add_ons="$configured_add_ons $libc_add_on" |
e0a3ed4f RM |
526 | if test "x$libc_add_on_canonical" = xunknown; then |
527 | AC_MSG_ERROR(fragment must set \$libc_add_on_canonical) | |
528 | fi | |
529 | for d in $libc_add_on_subdirs; do | |
530 | case "$libc_add_on" in | |
531 | /*) subdir_srcdir="$libc_add_on" ;; | |
532 | *) subdir_srcdir="\$(..)$libc_add_on" ;; | |
533 | esac | |
534 | case "$d" in | |
535 | .) | |
536 | d="${libc_add_on_canonical:-$libc_add_on}" | |
537 | ;; | |
538 | /*) | |
539 | subdir_srcdir="$d" | |
540 | ;; | |
541 | *) | |
542 | subdir_srcdir="$subdir_srcdir/$d" | |
543 | ;; | |
544 | esac | |
545 | d=`echo "$d" | sed 's@/*$@@;s@^.*/@@'` | |
546 | add_on_subdirs="$add_on_subdirs $d" | |
547 | test "$subdir_srcdir" = "\$(..)$d" || config_vars="$config_vars | |
548 | $d-srcdir = $subdir_srcdir" | |
549 | done | |
7967983f RM |
550 | for d in $libc_add_on_config_subdirs; do |
551 | case "$d" in | |
552 | /*) AC_MSG_ERROR(dnl | |
553 | fragment uses absolute path in \$libc_add_on_config_subdirs) ;; | |
554 | esac | |
555 | if test ! -d "$libc_add_on_srcdir/$d"; then | |
556 | AC_MSG_ERROR(fragment wants to configure missing directory $d) | |
557 | fi | |
558 | case "$libc_add_on" in | |
559 | /*) AC_MSG_ERROR(dnl | |
560 | relative path required for add-on using \$libc_add_on_config_subdirs) ;; | |
561 | esac | |
562 | subdirs="$subdirs $libc_add_on/$d" | |
563 | done | |
e0a3ed4f | 564 | } |
8f73811b | 565 | fi |
619f9448 | 566 | if test -n "$libc_add_on"; then |
10a803e0 | 567 | LIBC_PRECONFIGURE([$libc_add_on_srcdir], [add-on $libc_add_on for]) |
619f9448 RM |
568 | use_add_ons="$use_add_ons $libc_add_on" |
569 | add_ons_pfx="$add_ons_pfx $libc_add_on/" | |
e0a3ed4f RM |
570 | test -z "$libc_add_on_canonical" || |
571 | add_ons_sfx="$add_ons_sfx /$libc_add_on_canonical" | |
619f9448 | 572 | fi |
8f73811b | 573 | done |
c80e931a RM |
574 | # Use echo to strip excess whitespace. |
575 | add_ons="`echo $use_add_ons`" | |
8f73811b RM |
576 | fi |
577 | AC_SUBST(add_ons) | |
e0a3ed4f | 578 | AC_SUBST(add_on_subdirs) |
8f73811b RM |
579 | |
580 | ||
bdc8eb03 UD |
581 | ### |
582 | ### I put this here to prevent those annoying emails from people who cannot | |
583 | ### read and try to compile glibc on unsupported platforms. --drepper | |
584 | ### | |
585 | ### By using the undocumented --enable-hacker-mode option for configure | |
586 | ### one can skip this test to make the configuration not fail for unsupported | |
587 | ### platforms. | |
588 | ### | |
8f73811b | 589 | if test -z "$enable_hacker_mode" && test x"$libc_config_ok" != xyes; then |
bdc8eb03 | 590 | case "$machine-$host_os" in |
2ce4f015 | 591 | *-linux* | *-gnu*) |
bdc8eb03 UD |
592 | ;; |
593 | *) | |
594 | echo "*** The GNU C library is currently not available for this platform." | |
595 | echo "*** So far nobody cared to port it and if there is no volunteer it" | |
596 | echo "*** might never happen. So, if you have interest to see glibc on" | |
597 | echo "*** this platform visit" | |
598 | echo "*** http://www.gnu.org/software/libc/porting.html" | |
599 | echo "*** and join the group of porters" | |
600 | exit 1 | |
601 | ;; | |
602 | esac | |
603 | fi | |
604 | ||
3e239be6 JM |
605 | # Set base_machine if not set by a preconfigure fragment. |
606 | test -n "$base_machine" || base_machine=$machine | |
f0523145 | 607 | AC_SUBST(base_machine) |
28f540f4 | 608 | |
0cae3f4b MF |
609 | # For the multi-arch option we need support in the assembler & linker. |
610 | AC_CACHE_CHECK([for assembler and linker STT_GNU_IFUNC support], | |
611 | libc_cv_ld_gnu_indirect_function, [dnl | |
786b0b67 | 612 | cat > conftest.S <<EOF |
84b9230c | 613 | .type foo,%gnu_indirect_function |
0cae3f4b MF |
614 | foo: |
615 | .globl _start | |
616 | _start: | |
617 | .globl __start | |
618 | __start: | |
619 | .data | |
786b0b67 AS |
620 | #ifdef _LP64 |
621 | .quad foo | |
622 | #else | |
0cae3f4b | 623 | .long foo |
786b0b67 | 624 | #endif |
84b9230c | 625 | EOF |
0cae3f4b MF |
626 | libc_cv_ld_gnu_indirect_function=no |
627 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
628 | -nostartfiles -nostdlib \ | |
786b0b67 | 629 | -o conftest conftest.S 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
0cae3f4b MF |
630 | # Do a link to see if the backend supports IFUNC relocs. |
631 | $READELF -r conftest 1>&AS_MESSAGE_LOG_FD | |
632 | LC_ALL=C $READELF -r conftest | grep 'no relocations' >/dev/null || { | |
633 | libc_cv_ld_gnu_indirect_function=yes | |
634 | } | |
84b9230c MF |
635 | fi |
636 | rm -f conftest*]) | |
637 | ||
0cae3f4b | 638 | if test x"$libc_cv_ld_gnu_indirect_function" != xyes; then |
84b9230c MF |
639 | if test x"$multi_arch" = xyes; then |
640 | AC_MSG_ERROR([--enable-multi-arch support requires assembler and linker support]) | |
641 | else | |
642 | multi_arch=no | |
643 | fi | |
644 | fi | |
6270516e | 645 | multi_arch_d= |
84b9230c MF |
646 | if test x"$multi_arch" != xno; then |
647 | multi_arch_d=/multiarch | |
648 | fi | |
649 | ||
f0523145 | 650 | # Compute the list of sysdep directories for this configuration. |
f332db02 | 651 | # This can take a while to compute. |
f0523145 | 652 | sysdep_dir=$srcdir/sysdeps |
f332db02 | 653 | AC_MSG_CHECKING(sysdep dirs) |
f0523145 RM |
654 | dnl We need to use [ and ] for other purposes for a while now. |
655 | changequote(,)dnl | |
28f540f4 RM |
656 | # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1. |
657 | os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`" | |
658 | ||
b22d21b3 | 659 | test "x$base_os" != x || case "$os" in |
28f540f4 RM |
660 | gnu*) |
661 | base_os=mach/hurd ;; | |
2ce4f015 | 662 | linux*) |
28f540f4 | 663 | base_os=unix/sysv ;; |
28f540f4 RM |
664 | esac |
665 | ||
666 | # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos. | |
667 | tail=$os | |
668 | ostry=$os | |
669 | while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do | |
670 | ostry="$ostry /$o" | |
671 | tail=$o | |
75914335 | 672 | done |
28f540f4 RM |
673 | o=`echo $tail | sed 's/[0-9]*$//'` |
674 | if test $o != $tail; then | |
675 | ostry="$ostry /$o" | |
676 | fi | |
ec4b0518 UD |
677 | # For linux-gnu, try linux-gnu, then linux. |
678 | o=`echo $tail | sed 's/-.*$//'` | |
679 | if test $o != $tail; then | |
680 | ostry="$ostry /$o" | |
681 | fi | |
28f540f4 RM |
682 | |
683 | # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix. | |
684 | base= | |
685 | tail=$base_os | |
686 | while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do | |
687 | set $b | |
688 | base="$base /$1" | |
689 | tail="$2" | |
690 | done | |
691 | ||
ae6b8730 | 692 | # For sparc/sparc32, try sparc/sparc32 and then sparc. |
28f540f4 | 693 | mach= |
2ceaa76a | 694 | tail=$machine${submachine:+/$submachine} |
28f540f4 RM |
695 | while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do |
696 | set $m | |
10ceac89 RM |
697 | # Prepend the machine's FPU directory unless --without-fp. |
698 | if test "$with_fp" = yes; then | |
6270516e | 699 | maybe_fpu=/fpu |
f4b07664 | 700 | else |
6270516e | 701 | maybe_fpu=/nofpu |
82d00cab | 702 | fi |
6270516e RM |
703 | # For each machine term, try it with and then without /multiarch. |
704 | for try_fpu in $maybe_fpu ''; do | |
705 | for try_multi in $multi_arch_d ''; do | |
706 | mach="$mach /$1$try_fpu$try_multi" | |
707 | done | |
708 | done | |
28f540f4 RM |
709 | tail="$2" |
710 | done | |
711 | ||
712 | dnl We are done with glob and regexp uses of [ and ]; return to autoconf. | |
713 | changequote([,])dnl | |
714 | ||
715 | # Find what sysdep directories exist. | |
e0a3ed4f | 716 | sysnames_add_ons= |
28f540f4 | 717 | sysnames= |
4b69abad RM |
718 | for b in $base ''; do |
719 | for m0 in $mach ''; do | |
720 | for v in /$vendor ''; do | |
721 | test "$v" = / && continue | |
722 | for o in /$ostry ''; do | |
723 | test "$o" = / && continue | |
6270516e | 724 | for m in $mach ''; do |
4b69abad | 725 | for d in $add_ons_pfx ''; do |
8f73811b | 726 | for a in $add_ons_sfx ''; do |
1c9f1a02 RM |
727 | try_suffix="$m0$b$v$o$m" |
728 | if test -n "$try_suffix"; then | |
77e8bddf AS |
729 | try_srcdir="${srcdir}/" |
730 | case "$d" in | |
e0a3ed4f RM |
731 | /*) try_srcdir= ;; |
732 | esac | |
1c9f1a02 | 733 | try="${d}sysdeps$try_suffix$a" |
8f73811b RM |
734 | test -n "$enable_debug_configure" && |
735 | echo "$0 [DEBUG]: try $try" >&2 | |
e0a3ed4f | 736 | if test -d "$try_srcdir$try"; then |
8f73811b RM |
737 | sysnames="$sysnames $try" |
738 | { test -n "$o" || test -n "$b"; } && os_used=t | |
739 | { test -n "$m" || test -n "$m0"; } && machine_used=t | |
4b69abad RM |
740 | case x${m0:-$m} in |
741 | x*/$submachine) submachine_used=t ;; | |
742 | esac | |
e0a3ed4f RM |
743 | if test -n "$d"; then |
744 | case "$sysnames_add_ons" in | |
745 | *" $d "*) ;; | |
746 | *|'') sysnames_add_ons="$sysnames_add_ons $d" ;; | |
747 | esac | |
748 | fi | |
8f73811b | 749 | fi |
57ba7bb4 | 750 | fi |
8f73811b | 751 | done |
57ba7bb4 | 752 | done |
28f540f4 RM |
753 | done |
754 | done | |
755 | done | |
756 | done | |
4b69abad | 757 | done |
28f540f4 | 758 | |
6f89d2f3 L |
759 | # If the assembler supports gnu_indirect_function symbol type and the |
760 | # architecture supports multi-arch, we enable multi-arch by default. | |
84b9230c MF |
761 | case $sysnames_add_ons$sysnames in |
762 | *"$multi_arch_d"*) | |
763 | ;; | |
764 | *) | |
77e8bddf | 765 | test x"$multi_arch" = xdefault && multi_arch=no |
84b9230c MF |
766 | ;; |
767 | esac | |
768 | if test x"$multi_arch" != xno; then | |
6f89d2f3 L |
769 | AC_DEFINE(USE_MULTIARCH) |
770 | fi | |
771 | AC_SUBST(multi_arch) | |
772 | ||
28f540f4 RM |
773 | if test -z "$os_used" && test "$os" != none; then |
774 | AC_MSG_ERROR(Operating system $os is not supported.) | |
775 | fi | |
776 | if test -z "$machine_used" && test "$machine" != none; then | |
777 | AC_MSG_ERROR(The $machine is not supported.) | |
778 | fi | |
2ceaa76a RM |
779 | if test -z "$submachine_used" && test -n "$submachine"; then |
780 | AC_MSG_ERROR(The $submachine subspecies of $host_cpu is not supported.) | |
781 | fi | |
782 | AC_SUBST(submachine) | |
28f540f4 RM |
783 | |
784 | # We have now validated the configuration. | |
785 | ||
28f540f4 RM |
786 | # Expand the list of system names into a full list of directories |
787 | # from each element's parent name and Implies file (if present). | |
788 | set $sysnames | |
e50ec9f9 | 789 | names= |
28f540f4 RM |
790 | while test $# -gt 0; do |
791 | name=$1 | |
792 | shift | |
793 | ||
e50ec9f9 | 794 | case " $names " in *" $name "*) |
f332db02 RM |
795 | # Already in the list. |
796 | continue | |
e50ec9f9 | 797 | esac |
f332db02 RM |
798 | |
799 | # Report each name as we discover it, so there is no long pause in output. | |
0b4ee387 | 800 | echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD |
f332db02 | 801 | |
57ba7bb4 UD |
802 | name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'` |
803 | ||
804 | case $name in | |
805 | /*) xsrcdir= ;; | |
806 | *) xsrcdir=$srcdir/ ;; | |
807 | esac | |
808 | test -n "$enable_debug_configure" && | |
809 | echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2 | |
810 | ||
ba75122d RM |
811 | for implies_file in Implies Implies-before Implies-after; do |
812 | implies_type=`echo $implies_file | sed s/-/_/` | |
813 | eval ${implies_type}= | |
814 | if test -f $xsrcdir$name/$implies_file; then | |
815 | # Collect more names from the `Implies' file (removing comments). | |
816 | implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/$implies_file`" | |
817 | for x in $implied_candidate; do | |
818 | found=no | |
819 | if test -d $xsrcdir$name_base/$x; then | |
820 | eval "${implies_type}=\"\$${implies_type} \$name_base/\$x\"" | |
636ccfc8 | 821 | found=yes |
ba75122d RM |
822 | fi |
823 | for d in $add_ons_pfx ''; do | |
824 | try="${d}sysdeps/$x" | |
825 | case $d in | |
826 | /*) try_srcdir= ;; | |
827 | *) try_srcdir=$srcdir/ ;; | |
e0a3ed4f | 828 | esac |
ba75122d RM |
829 | test -n "$enable_debug_configure" && |
830 | echo "[DEBUG]: $name $implies_file $x try($d) {$try_srcdir}$try" >&2 | |
831 | if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try; | |
832 | then | |
833 | eval "${implies_type}=\"\$${implies_type} \$try\"" | |
834 | found=yes | |
835 | case "$sysnames_add_ons" in | |
836 | *" $d "*) ;; | |
837 | *|'') sysnames_add_ons="$sysnames_add_ons $d" ;; | |
838 | esac | |
839 | fi | |
840 | done | |
841 | if test $found = no; then | |
842 | AC_MSG_WARN($name/$implies_file specifies nonexistent $x) | |
636ccfc8 UD |
843 | fi |
844 | done | |
ba75122d RM |
845 | fi |
846 | done | |
28f540f4 RM |
847 | |
848 | # Add NAME to the list of names. | |
849 | names="$names $name" | |
850 | ||
851 | # Find the parent of NAME, using the empty string if it has none. | |
852 | changequote(,)dnl | |
57ba7bb4 | 853 | parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`" |
28f540f4 RM |
854 | changequote([,])dnl |
855 | ||
ba75122d RM |
856 | test -n "$enable_debug_configure" && |
857 | echo "[DEBUG]: $name Implies='$Implies' rest='$*' parent='$parent' \ | |
57633811 | 858 | Implies_before='$Implies_before' Implies_after='$Implies_after'" >&2 |
ba75122d | 859 | |
28f540f4 RM |
860 | # Add the names implied by NAME, and NAME's parent (if it has one), to |
861 | # the list of names to be processed (the argument list). We prepend the | |
862 | # implied names to the list and append the parent. We want implied | |
863 | # directories to come before further directories inferred from the | |
864 | # configuration components; this ensures that for sysv4, unix/common | |
865 | # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*) | |
866 | # after sysv4). | |
ba75122d | 867 | sysnames="`echo $Implies $* $Implies_before $parent $Implies_after`" |
28f540f4 RM |
868 | test -n "$sysnames" && set $sysnames |
869 | done | |
870 | ||
871 | # Add the default directories. | |
83ef87ba | 872 | default_sysnames="sysdeps/generic" |
ecdc196c | 873 | sysnames="$names $default_sysnames" |
f332db02 RM |
874 | AC_SUBST(sysnames) |
875 | # The other names were emitted during the scan. | |
ecdc196c | 876 | AC_MSG_RESULT($default_sysnames) |
28f540f4 | 877 | |
e0a3ed4f RM |
878 | # Collect the list of add-ons that supply partial sysdeps trees. |
879 | sysdeps_add_ons= | |
880 | for add_on in $add_ons; do | |
881 | case "$add_on" in | |
882 | /*) xsrcdir= ;; | |
883 | *) xsrcdir="$srcdir/" ;; | |
884 | esac | |
885 | ||
886 | test -d "$xsrcdir$add_on/sysdeps" || { | |
887 | case "$configured_add_ons " in | |
888 | *" $add_on "*) ;; | |
889 | *|'') | |
890 | AC_MSG_ERROR(add-on $add_on has no configure fragment or sysdeps tree) | |
891 | ;; | |
892 | esac | |
893 | continue | |
894 | } | |
895 | ||
896 | sysdeps_add_ons="$sysdeps_add_ons $add_on" | |
897 | case "$sysnames_add_ons" in | |
898 | *" $add_on/ "*) ;; | |
899 | *|'') | |
900 | AC_MSG_WARN(add-on $add_on contributed no sysdeps directories) | |
901 | continue ;; | |
902 | esac | |
903 | ||
904 | found=no | |
905 | for d in $sysnames; do | |
906 | case "$d" in | |
907 | $add_on/sysdeps/*) ;; | |
908 | *) continue ;; | |
909 | esac | |
910 | (cd "$xsrcdir$d" && for f in *[[!~]]; do | |
911 | case "$f" in | |
912 | sys|bits) | |
913 | for ff in $f/*.h; do | |
914 | test -d "$ff" || { test -e "$ff" && exit 88; } | |
915 | done | |
916 | ;; | |
917 | *) | |
77e8bddf | 918 | test -d "$f" || { test -e "$f" && exit 88; } |
e0a3ed4f RM |
919 | ;; |
920 | esac | |
921 | done) | |
922 | if test $? -eq 88; then | |
923 | found=yes | |
924 | break | |
925 | fi | |
926 | done | |
927 | if test $found = no; then | |
928 | AC_MSG_WARN(add-on $add_on contributed no useful sysdeps directories) | |
929 | fi | |
930 | done | |
931 | AC_SUBST(sysdeps_add_ons) | |
932 | ||
f332db02 RM |
933 | |
934 | ### Locate tools. | |
28f540f4 | 935 | |
28f540f4 | 936 | AC_PROG_INSTALL |
2b80a372 | 937 | if test "$INSTALL" = "${srcdir}/scripts/install-sh -c"; then |
28f540f4 | 938 | # The makefiles need to use a different form to find it in $srcdir. |
2b80a372 | 939 | INSTALL='\$(..)./scripts/install-sh -c' |
28f540f4 | 940 | fi |
0e3426bb | 941 | AC_PROG_LN_S |
ae828bc6 | 942 | |
4baa087a | 943 | LIBC_PROG_BINUTILS |
4baa087a | 944 | |
bd805071 | 945 | # Accept binutils 2.22 or newer. |
4baa087a RM |
946 | AC_CHECK_PROG_VER(AS, $AS, --version, |
947 | [GNU assembler.* \([0-9]*\.[0-9.]*\)], | |
bd805071 AS |
948 | [2.1[0-9][0-9]*|2.2[2-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*], |
949 | AS=: critic_missing="$critic_missing as") | |
4baa087a RM |
950 | AC_CHECK_PROG_VER(LD, $LD, --version, |
951 | [GNU ld.* \([0-9][0-9]*\.[0-9.]*\)], | |
bd805071 AS |
952 | [2.1[0-9][0-9]*|2.2[2-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*], |
953 | LD=: critic_missing="$critic_missing ld") | |
4baa087a | 954 | |
63bda0c1 | 955 | # These programs are version sensitive. |
3a12e572 | 956 | AC_CHECK_TOOL_PREFIX |
22e65f8f | 957 | AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version, |
8fc1e2ca | 958 | [GNU Make[^0-9]*\([0-9][0-9.]*\)], |
28d708c4 | 959 | [3.79* | 3.[89]* | [4-9].* | [1-9][0-9]*], critic_missing="$critic_missing make") |
63bda0c1 | 960 | |
22e65f8f | 961 | AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version, |
bdd421cc | 962 | [GNU gettext.* \([0-9]*\.[0-9.]*\)], |
aefdff34 RM |
963 | [0.10.3[6-9]* | 0.10.[4-9][0-9]* | 0.1[1-9]* | 0.[2-9][0-9]* | [1-9].*], |
964 | MSGFMT=: aux_missing="$aux_missing msgfmt") | |
63bda0c1 | 965 | AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, |
8b7fb588 | 966 | [GNU texinfo.* \([0-9][0-9.]*\)], |
3a12c70f | 967 | [4.[7-9]*|4.[1-9][0-9]*|[5-9].*], |
aefdff34 | 968 | MAKEINFO=: aux_missing="$aux_missing makeinfo") |
d6a97a28 | 969 | AC_CHECK_PROG_VER(SED, sed, --version, |
07e51550 | 970 | [GNU sed[^0-9]* \([0-9]*\.[0-9.]*\)], |
aefdff34 RM |
971 | [3.0[2-9]*|3.[1-9]*|[4-9]*], |
972 | SED=: aux_missing="$aux_missing sed") | |
0786794f AM |
973 | AC_CHECK_PROG_VER(AWK, gawk, --version, |
974 | [GNU Awk[^0-9]*\([0-9][0-9.]*\)], | |
12086fb4 | 975 | [3.1.[2-9]*|3.[2-9]*|[4-9]*], critic_missing="$critic_missing gawk") |
63bda0c1 | 976 | |
461a7b1e RM |
977 | AC_CACHE_CHECK([if $CC is sufficient to build libc], libc_cv_compiler_ok, [ |
978 | AC_TRY_COMPILE([], [ | |
b08b4218 | 979 | #if !defined __GNUC__ || __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 7) |
461a7b1e RM |
980 | #error insufficient compiler |
981 | #endif], | |
982 | [libc_cv_compiler_ok=yes], | |
983 | [libc_cv_compiler_ok=no])]) | |
984 | AS_IF([test $libc_cv_compiler_ok != yes], | |
985 | [critic_missing="$critic_missing compiler"]) | |
986 | ||
30b99d79 | 987 | AC_CHECK_TOOL(NM, nm, false) |
d30cf5bb | 988 | |
8894bad3 AM |
989 | if test "x$maintainer" = "xyes"; then |
990 | AC_CHECK_PROGS(AUTOCONF, autoconf, no) | |
991 | case "x$AUTOCONF" in | |
992 | xno|x|x:) AUTOCONF=no ;; | |
993 | *) | |
994 | AC_CACHE_CHECK(dnl | |
995 | whether $AUTOCONF${ACFLAGS:+ }$ACFLAGS works, libc_cv_autoconf_works, [dnl | |
996 | if (cd $srcdir; $AUTOCONF $ACFLAGS configure.ac > /dev/null 2>&1); then | |
997 | libc_cv_autoconf_works=yes | |
998 | else | |
999 | libc_cv_autoconf_works=no | |
1000 | fi]) | |
1001 | test $libc_cv_autoconf_works = yes || AUTOCONF=no | |
1002 | ;; | |
1003 | esac | |
1004 | if test "x$AUTOCONF" = xno; then | |
1005 | aux_missing="$aux_missing autoconf" | |
1006 | fi | |
9e8ac24b AM |
1007 | else |
1008 | AUTOCONF=no | |
14519931 | 1009 | fi |
1400de2e | 1010 | |
32a448ed RM |
1011 | test -n "$critic_missing" && AC_MSG_ERROR([ |
1012 | *** These critical programs are missing or too old:$critic_missing | |
1013 | *** Check the INSTALL file for required versions.]) | |
1014 | ||
4bca4c17 | 1015 | test -n "$aux_missing" && AC_MSG_WARN([ |
9c6fffc0 | 1016 | *** These auxiliary programs are missing or incompatible versions:$aux_missing |
63bda0c1 UD |
1017 | *** some features will be disabled. |
1018 | *** Check the INSTALL file for required versions.]) | |
28f540f4 | 1019 | |
dbe7a0f5 UD |
1020 | # if using special system headers, find out the compiler's sekrit |
1021 | # header directory and add that to the list. NOTE: Only does the right | |
1022 | # thing on a system that doesn't need fixincludes. (Not presently a problem.) | |
1023 | if test -n "$sysheaders"; then | |
67fbfa5c RM |
1024 | SYSINCLUDES=-nostdinc |
1025 | for d in include include-fixed; do | |
1026 | i=`$CC -print-file-name="$d"` && test "x$i" != x && test "x$i" != "x$d" && | |
1027 | SYSINCLUDES="$SYSINCLUDES -isystem $i" | |
1028 | done | |
1029 | SYSINCLUDES="$SYSINCLUDES \ | |
3d6ce23a | 1030 | -isystem `echo $sysheaders | sed 's/:/ -isystem /g'`" |
ef226fec | 1031 | if test -n "$CXX"; then |
7872cfb0 | 1032 | CXX_SYSINCLUDES= |
67060746 AC |
1033 | for cxxheaders in `$CXX -v -S -x c++ /dev/null -o /dev/null 2>&1 \ |
1034 | | sed -n -e '1,/#include/d' -e 's/^ \(\/.*\/[cg]++\)/\1/p'`; do | |
1035 | test "x$cxxheaders" != x && | |
1036 | CXX_SYSINCLUDES="$CXX_SYSINCLUDES -isystem $cxxheaders" | |
1037 | done | |
ef226fec | 1038 | fi |
dbe7a0f5 UD |
1039 | fi |
1040 | AC_SUBST(SYSINCLUDES) | |
ef226fec | 1041 | AC_SUBST(CXX_SYSINCLUDES) |
dbe7a0f5 | 1042 | |
3911660e UD |
1043 | # Test if LD_LIBRARY_PATH contains the notation for the current directory |
1044 | # since this would lead to problems installing/building glibc. | |
1045 | # LD_LIBRARY_PATH contains the current directory if one of the following | |
1046 | # is true: | |
1047 | # - one of the terminals (":" and ";") is the first or last sign | |
1048 | # - two terminals occur directly after each other | |
1049 | # - the path contains an element with a dot in it | |
1050 | AC_MSG_CHECKING(LD_LIBRARY_PATH variable) | |
1051 | changequote(,)dnl | |
1052 | case ${LD_LIBRARY_PATH} in | |
1053 | [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) | |
b3a86ae1 | 1054 | ld_library_path_setting="contains current directory" |
3911660e UD |
1055 | ;; |
1056 | *) | |
1057 | ld_library_path_setting="ok" | |
1058 | ;; | |
1059 | esac | |
1060 | changequote([,])dnl | |
1061 | AC_MSG_RESULT($ld_library_path_setting) | |
1062 | if test "$ld_library_path_setting" != "ok"; then | |
63bda0c1 UD |
1063 | AC_MSG_ERROR([ |
1064 | *** LD_LIBRARY_PATH shouldn't contain the current directory when | |
1065 | *** building glibc. Please change the environment variable | |
1066 | *** and run configure again.]) | |
3911660e | 1067 | fi |
8e31cf7e | 1068 | |
26f56c1c | 1069 | AC_PATH_PROG(BASH_SHELL, bash, no) |
84384f5b | 1070 | |
c0016081 | 1071 | AC_PATH_PROG(PERL, perl, no) |
2fd5d029 RM |
1072 | if test "$PERL" != no && |
1073 | (eval `$PERL -V:apiversion`; test `expr "$apiversion" \< 5` -ne 0); then | |
1074 | PERL=no | |
ecb06196 | 1075 | fi |
2f512715 AS |
1076 | AC_PATH_PROG(INSTALL_INFO, install-info, no, |
1077 | $PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin) | |
cc8623f1 WN |
1078 | AC_CHECK_PROG_VER(BISON, bison, --version, |
1079 | [bison (GNU Bison) \([0-9]*\.[0-9.]*\)], | |
1080 | [2.7*|[3-9].*|[1-9][0-9]*], | |
1081 | BISON=no) | |
2de00372 | 1082 | |
b8dc6a10 | 1083 | AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl |
9a70fcab | 1084 | cat > conftest.s <<EOF |
8c0c01db | 1085 | .text |
ae1025be | 1086 | foo: |
df2a0c93 | 1087 | .set glibc_conftest_frobozz,foo |
7b8e0d49 | 1088 | .globl glibc_conftest_frobozz |
e215c478 | 1089 | EOF |
df2a0c93 RM |
1090 | # The alpha-dec-osf1 assembler gives only a warning for `.set' |
1091 | # (but it doesn't work), so we must do a linking check to be sure. | |
1092 | cat > conftest1.c <<\EOF | |
1093 | extern int glibc_conftest_frobozz; | |
640f0119 | 1094 | void _start() { glibc_conftest_frobozz = 1; } |
df2a0c93 RM |
1095 | EOF |
1096 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
640f0119 | 1097 | -nostartfiles -nostdlib \ |
0b4ee387 | 1098 | -o conftest conftest.s conftest1.c 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
e215c478 RM |
1099 | libc_cv_asm_set_directive=yes |
1100 | else | |
1101 | libc_cv_asm_set_directive=no | |
1102 | fi | |
65b3cbcb | 1103 | rm -f conftest*]) |
e215c478 RM |
1104 | if test $libc_cv_asm_set_directive = yes; then |
1105 | AC_DEFINE(HAVE_ASM_SET_DIRECTIVE) | |
1106 | fi | |
1107 | ||
2a723ff6 JM |
1108 | AC_CACHE_CHECK(linker support for protected data symbol, |
1109 | libc_cv_protected_data, | |
1110 | [cat > conftest.c <<EOF | |
1111 | int bar __attribute__ ((visibility ("protected"))) = 1; | |
83569fb8 | 1112 | EOF |
2a723ff6 JM |
1113 | libc_cv_protected_data=no |
1114 | if AC_TRY_COMMAND(${CC-cc} -nostdlib -nostartfiles -fPIC -shared conftest.c -o conftest.so); then | |
1115 | cat > conftest.c <<EOF | |
1116 | extern int bar; | |
1117 | int main (void) { return bar; } | |
83569fb8 | 1118 | EOF |
2a723ff6 JM |
1119 | if AC_TRY_COMMAND(${CC-cc} -nostdlib -nostartfiles conftest.c -o conftest conftest.so); then |
1120 | libc_cv_protected_data=yes | |
83569fb8 | 1121 | fi |
2a723ff6 JM |
1122 | fi |
1123 | rm -f conftest.* | |
1124 | ]) | |
83569fb8 L |
1125 | AC_SUBST(libc_cv_protected_data) |
1126 | ||
a0da5fe1 UD |
1127 | AC_CACHE_CHECK(for broken __attribute__((alias())), |
1128 | libc_cv_broken_alias_attribute, | |
1129 | [cat > conftest.c <<EOF | |
1130 | extern int foo (int x) __asm ("xyzzy"); | |
1131 | int bar (int x) { return x; } | |
1132 | extern __typeof (bar) foo __attribute ((weak, alias ("bar"))); | |
1133 | extern int dfoo; | |
1134 | extern __typeof (dfoo) dfoo __asm ("abccb"); | |
1135 | int dfoo = 1; | |
37ba7d66 | 1136 | EOF |
a0da5fe1 UD |
1137 | libc_cv_broken_alias_attribute=yes |
1138 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
1139 | if grep 'xyzzy' conftest.s >/dev/null && | |
1140 | grep 'abccb' conftest.s >/dev/null; then | |
1141 | libc_cv_broken_alias_attribute=no | |
1142 | fi | |
1143 | fi | |
1144 | rm -f conftest.c conftest.s | |
1145 | ]) | |
1146 | if test $libc_cv_broken_alias_attribute = yes; then | |
1147 | AC_MSG_ERROR(working alias attribute support required) | |
1148 | fi | |
1149 | ||
2a723ff6 JM |
1150 | AC_CACHE_CHECK(whether to put _rtld_local into .sdata section, |
1151 | libc_cv_have_sdata_section, | |
1152 | [echo "int i;" > conftest.c | |
1153 | libc_cv_have_sdata_section=no | |
1154 | if ${CC-cc} $LDFLAGS -fPIC -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \ | |
1155 | | grep '\.sdata' >/dev/null; then | |
1156 | libc_cv_have_sdata_section=yes | |
1157 | fi | |
1158 | rm -f conftest.c conftest.so | |
1159 | ]) | |
1160 | if test $libc_cv_have_sdata_section = yes; then | |
1161 | AC_DEFINE(HAVE_SDATA_SECTION) | |
a0da5fe1 | 1162 | fi |
0d01dace | 1163 | |
a0da5fe1 UD |
1164 | AC_CACHE_CHECK(whether to use .ctors/.dtors header and trailer, |
1165 | libc_cv_ctors_header, [dnl | |
1166 | libc_cv_ctors_header=yes | |
07037eeb JM |
1167 | LIBC_TRY_LINK_STATIC([ |
1168 | __attribute__ ((constructor)) void ctor (void) { asm (""); } | |
1169 | __attribute__ ((destructor)) void dtor (void) { asm (""); } | |
113ddea4 | 1170 | ], |
a0da5fe1 | 1171 | [dnl |
113ddea4 | 1172 | AS_IF([$READELF -WS conftest$ac_exeext | $AWK ' |
92963737 | 1173 | { gsub(/\@<:@ */, "@<:@") } |
113ddea4 RM |
1174 | $2 == ".ctors" || $2 == ".dtors" { |
1175 | size = strtonum("0x" $6) | |
1176 | align = strtonum("0x" $NF) | |
1177 | seen@<:@$2@:>@ = 1 | |
1178 | stub@<:@$2@:>@ = size == align * 2 | |
92963737 | 1179 | } |
113ddea4 RM |
1180 | END { |
1181 | ctors_ok = !seen@<:@".ctors"@:>@ || stub@<:@".ctors"@:>@ | |
1182 | dtors_ok = !seen@<:@".dtors"@:>@ || stub@<:@".dtors"@:>@ | |
1183 | exit ((ctors_ok && dtors_ok) ? 0 : 1) | |
1184 | } | |
1185 | '], [libc_cv_ctors_header=no]) | |
1186 | ], [dnl | |
1187 | AC_MSG_ERROR([missing __attribute__ ((constructor)) support??]) | |
1188 | ]) | |
a0da5fe1 UD |
1189 | ]) |
1190 | if test $libc_cv_ctors_header = no; then | |
1191 | AC_DEFINE(NO_CTORS_DTORS_SECTIONS) | |
1192 | fi | |
5241882c | 1193 | |
a0da5fe1 UD |
1194 | AC_CACHE_CHECK(for libunwind-support in compiler, |
1195 | libc_cv_cc_with_libunwind, [ | |
1196 | cat > conftest.c <<EOF | |
cbdb12de UD |
1197 | int main (void) { return 0; } |
1198 | EOF | |
a0da5fe1 | 1199 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -static -o conftest \ |
8175a253 | 1200 | conftest.c -v 2>&1 >/dev/null | grep ' -lunwind ' >/dev/null; then |
a0da5fe1 UD |
1201 | libc_cv_cc_with_libunwind=yes |
1202 | else | |
1203 | libc_cv_cc_with_libunwind=no | |
c776b3d7 | 1204 | fi |
a0da5fe1 UD |
1205 | rm -f conftest*]) |
1206 | AC_SUBST(libc_cv_cc_with_libunwind) | |
1207 | if test $libc_cv_cc_with_libunwind = yes; then | |
1208 | AC_DEFINE(HAVE_CC_WITH_LIBUNWIND) | |
1209 | fi | |
c776b3d7 | 1210 | |
a0da5fe1 UD |
1211 | ASFLAGS_config= |
1212 | AC_CACHE_CHECK(whether --noexecstack is desirable for .S files, | |
1213 | libc_cv_as_noexecstack, [dnl | |
1214 | cat > conftest.c <<EOF | |
35915ec8 UD |
1215 | void foo (void) { } |
1216 | EOF | |
a0da5fe1 UD |
1217 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS |
1218 | -S -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD]) \ | |
8175a253 | 1219 | && grep .note.GNU-stack conftest.s >/dev/null \ |
a0da5fe1 UD |
1220 | && AC_TRY_COMMAND([${CC-cc} $ASFLAGS -Wa,--noexecstack |
1221 | -c -o conftest.o conftest.s 1>&AS_MESSAGE_LOG_FD]) | |
1222 | then | |
1223 | libc_cv_as_noexecstack=yes | |
1224 | else | |
1225 | libc_cv_as_noexecstack=no | |
1226 | fi | |
1227 | rm -f conftest*]) | |
1228 | if test $libc_cv_as_noexecstack = yes; then | |
1229 | ASFLAGS_config="$ASFLAGS_config -Wa,--noexecstack" | |
1230 | fi | |
1231 | AC_SUBST(ASFLAGS_config) | |
2abf9ff1 | 1232 | |
a0da5fe1 UD |
1233 | AC_CACHE_CHECK(for -z combreloc, |
1234 | libc_cv_z_combreloc, [dnl | |
1235 | cat > conftest.c <<EOF | |
d555194c UD |
1236 | extern int bar (int); |
1237 | extern int mumble; | |
1238 | int foo (void) { return bar (mumble); } | |
a711b01d | 1239 | EOF |
a0da5fe1 | 1240 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dbc92dc6 | 1241 | -fPIC -shared -o conftest.so conftest.c |
35cd3c97 | 1242 | -nostdlib -nostartfiles |
c2f55635 | 1243 | -Wl,-z,combreloc 1>&AS_MESSAGE_LOG_FD]) |
a0da5fe1 | 1244 | then |
a711b01d UD |
1245 | dnl The following test is a bit weak. We must use a tool which can test |
1246 | dnl cross-platform since the gcc used can be a cross compiler. Without | |
1247 | dnl introducing new options this is not easily doable. Instead use a tool | |
1248 | dnl which always is cross-platform: readelf. To detect whether -z combreloc | |
1249 | dnl look for a section named .rel.dyn. | |
a0da5fe1 UD |
1250 | if $READELF -S conftest.so | grep '\.rel\(a\|\)\.dyn' > /dev/null; then |
1251 | libc_cv_z_combreloc=yes | |
fdde8349 UD |
1252 | else |
1253 | libc_cv_z_combreloc=no | |
a711b01d | 1254 | fi |
a0da5fe1 UD |
1255 | else |
1256 | libc_cv_z_combreloc=no | |
1257 | fi | |
1258 | rm -f conftest*]) | |
1259 | if test "$libc_cv_z_combreloc" = yes; then | |
1260 | AC_DEFINE(HAVE_Z_COMBRELOC) | |
1261 | fi | |
1262 | AC_SUBST(libc_cv_z_combreloc) | |
2abf9ff1 | 1263 | |
6bfea974 L |
1264 | LIBC_LINKER_FEATURE([-z execstack], [-Wl,-z,execstack], |
1265 | [libc_cv_z_execstack=yes], [libc_cv_z_execstack=no]) | |
a0da5fe1 | 1266 | AC_SUBST(libc_cv_z_execstack) |
c9c60884 | 1267 | |
a0da5fe1 | 1268 | AC_CACHE_CHECK(for -fpie, libc_cv_fpie, [dnl |
4da0431d JM |
1269 | LIBC_TRY_CC_OPTION([-fpie], [libc_cv_fpie=yes], [libc_cv_fpie=no]) |
1270 | ]) | |
c9c60884 | 1271 | |
a0da5fe1 | 1272 | AC_SUBST(libc_cv_fpie) |
871b9158 | 1273 | |
a0da5fe1 UD |
1274 | AC_CACHE_CHECK(for --hash-style option, |
1275 | libc_cv_hashstyle, [dnl | |
1276 | cat > conftest.c <<EOF | |
871b9158 UD |
1277 | int _start (void) { return 42; } |
1278 | EOF | |
a0da5fe1 UD |
1279 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
1280 | -fPIC -shared -o conftest.so conftest.c | |
1281 | -Wl,--hash-style=both -nostdlib 1>&AS_MESSAGE_LOG_FD]) | |
1282 | then | |
1283 | libc_cv_hashstyle=yes | |
1284 | else | |
1285 | libc_cv_hashstyle=no | |
1286 | fi | |
1287 | rm -f conftest*]) | |
1288 | AC_SUBST(libc_cv_hashstyle) | |
1289 | ||
1290 | # The linker's default -shared behavior is good enough if it | |
1291 | # does these things that our custom linker scripts ensure that | |
1292 | # all allocated NOTE sections come first. | |
1293 | if test "$use_default_link" = default; then | |
1294 | AC_CACHE_CHECK([for sufficient default -shared layout], | |
1295 | libc_cv_use_default_link, [dnl | |
1296 | libc_cv_use_default_link=no | |
1297 | cat > conftest.s <<\EOF | |
fd5e21c7 RM |
1298 | .section .note.a,"a",%note |
1299 | .balign 4 | |
1300 | .long 4,4,9 | |
1301 | .string "GNU" | |
1302 | .string "foo" | |
1303 | .section .note.b,"a",%note | |
1304 | .balign 4 | |
1305 | .long 4,4,9 | |
1306 | .string "GNU" | |
1307 | .string "bar" | |
1308 | EOF | |
a0da5fe1 | 1309 | if AC_TRY_COMMAND([dnl |
fd5e21c7 RM |
1310 | ${CC-cc} $ASFLAGS -shared -o conftest.so conftest.s 1>&AS_MESSAGE_LOG_FD]) && |
1311 | ac_try=`$READELF -S conftest.so | sed -n \ | |
1312 | ['${x;p;} | |
1313 | s/^ *\[ *[1-9][0-9]*\] *\([^ ][^ ]*\) *\([^ ][^ ]*\) .*$/\2 \1/ | |
1314 | t a | |
1315 | b | |
1316 | : a | |
1317 | H']` | |
a0da5fe1 UD |
1318 | then |
1319 | libc_seen_a=no libc_seen_b=no | |
1320 | set -- $ac_try | |
1321 | while test $# -ge 2 -a "$1" = NOTE; do | |
1322 | case "$2" in | |
1323 | .note.a) libc_seen_a=yes ;; | |
1324 | .note.b) libc_seen_b=yes ;; | |
1325 | esac | |
1326 | shift 2 | |
1327 | done | |
1328 | case "$libc_seen_a$libc_seen_b" in | |
1329 | yesyes) | |
1330 | libc_cv_use_default_link=yes | |
1331 | ;; | |
1332 | *) | |
1333 | echo >&AS_MESSAGE_LOG_FD "\ | |
fd5e21c7 RM |
1334 | $libc_seen_a$libc_seen_b from: |
1335 | $ac_try" | |
a0da5fe1 UD |
1336 | ;; |
1337 | esac | |
fd5e21c7 | 1338 | fi |
a0da5fe1 UD |
1339 | rm -f conftest*]) |
1340 | use_default_link=$libc_cv_use_default_link | |
fd26970f | 1341 | fi |
49803108 | 1342 | |
89569c8b L |
1343 | AC_CACHE_CHECK(for GLOB_DAT reloc, |
1344 | libc_cv_has_glob_dat, [dnl | |
1345 | cat > conftest.c <<EOF | |
1346 | extern int mumble; | |
1347 | int foo (void) { return mumble; } | |
1348 | EOF | |
1349 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS | |
1350 | -fPIC -shared -o conftest.so conftest.c | |
1351 | -nostdlib -nostartfiles | |
1352 | 1>&AS_MESSAGE_LOG_FD]) | |
1353 | then | |
1354 | dnl look for GLOB_DAT relocation. | |
1355 | if $READELF -rW conftest.so | grep '_GLOB_DAT' > /dev/null; then | |
1356 | libc_cv_has_glob_dat=yes | |
1357 | else | |
1358 | libc_cv_has_glob_dat=no | |
1359 | fi | |
1360 | else | |
1361 | libc_cv_has_glob_dat=no | |
1362 | fi | |
1363 | rm -f conftest*]) | |
1364 | AC_SUBST(libc_cv_has_glob_dat) | |
1365 | ||
5c550700 RM |
1366 | AC_CACHE_CHECK(linker output format, libc_cv_output_format, [dnl |
1367 | if libc_cv_output_format=` | |
1368 | ${CC-cc} -nostartfiles -nostdlib -Wl,--print-output-format 2>&AS_MESSAGE_LOG_FD` | |
1369 | then | |
1370 | : | |
1371 | else | |
1372 | libc_cv_output_format= | |
1373 | fi | |
1374 | test -n "$libc_cv_output_format" || libc_cv_output_format=unknown]) | |
1375 | AC_SUBST(libc_cv_output_format) | |
1376 | ||
22dca1ea | 1377 | AC_CACHE_CHECK(for -fno-toplevel-reorder -fno-section-anchors, libc_cv_fno_toplevel_reorder, [dnl |
49803108 AJ |
1378 | cat > conftest.c <<EOF |
1379 | int foo; | |
1380 | EOF | |
22dca1ea | 1381 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -fno-toplevel-reorder -fno-section-anchors |
49803108 AJ |
1382 | conftest.c 1>&AS_MESSAGE_LOG_FD]) |
1383 | then | |
18e2ac6d | 1384 | libc_cv_fno_toplevel_reorder=yes |
49803108 | 1385 | else |
18e2ac6d | 1386 | libc_cv_fno_toplevel_reorder=no |
49803108 AJ |
1387 | fi |
1388 | rm -f conftest*]) | |
18e2ac6d | 1389 | if test $libc_cv_fno_toplevel_reorder = yes; then |
22dca1ea | 1390 | fno_unit_at_a_time="-fno-toplevel-reorder -fno-section-anchors" |
18e2ac6d | 1391 | else |
49803108 AJ |
1392 | fno_unit_at_a_time=-fno-unit-at-a-time |
1393 | fi | |
1394 | AC_SUBST(fno_unit_at_a_time) | |
fd26970f | 1395 | |
401a9ec9 | 1396 | AC_CACHE_CHECK(for -fstack-protector, libc_cv_ssp, [dnl |
17228132 TS |
1397 | LIBC_TRY_CC_OPTION([$CFLAGS $CPPFLAGS -Werror -fstack-protector], |
1398 | [libc_cv_ssp=yes], | |
1399 | [libc_cv_ssp=no]) | |
1400 | ]) | |
6ab674eb MF |
1401 | |
1402 | AC_CACHE_CHECK(for -fstack-protector-strong, libc_cv_ssp_strong, [dnl | |
1403 | LIBC_TRY_CC_OPTION([$CFLAGS $CPPFLAGS -Werror -fstack-protector-strong], | |
1404 | [libc_cv_ssp_strong=yes], | |
1405 | [libc_cv_ssp_strong=no]) | |
1406 | ]) | |
1407 | ||
1408 | stack_protector= | |
1409 | if test "$libc_cv_ssp_strong" = "yes"; then | |
1410 | stack_protector="-fstack-protector-strong" | |
1411 | elif test "$libc_cv_ssp" = "yes"; then | |
1412 | stack_protector="-fstack-protector" | |
1413 | fi | |
1414 | AC_SUBST(stack_protector) | |
401a9ec9 | 1415 | |
a0da5fe1 UD |
1416 | AC_CACHE_CHECK(whether cc puts quotes around section names, |
1417 | libc_cv_have_section_quotes, | |
1418 | [cat > conftest.c <<EOF | |
1419 | static const int foo | |
1420 | __attribute__ ((section ("bar"))) = 1; | |
e26dd47f | 1421 | EOF |
a0da5fe1 UD |
1422 | if ${CC-cc} -S conftest.c -o conftest.s; then |
1423 | if grep '\.section.*"bar"' conftest.s >/dev/null; then | |
1424 | libc_cv_have_section_quotes=yes | |
e26dd47f | 1425 | else |
a0da5fe1 | 1426 | libc_cv_have_section_quotes=no |
e26dd47f | 1427 | fi |
a0da5fe1 UD |
1428 | else |
1429 | libc_cv_have_section_quotes=unknown | |
1430 | fi | |
1431 | rm -f conftest.{c,s} | |
1432 | ]) | |
1433 | if test $libc_cv_have_section_quotes = yes; then | |
1434 | AC_DEFINE(HAVE_SECTION_QUOTES) | |
9a97d1f7 UD |
1435 | fi |
1436 | ||
d555194c UD |
1437 | AC_CACHE_CHECK(for __builtin_memset, libc_cv_gcc_builtin_memset, [dnl |
1438 | cat > conftest.c <<\EOF | |
1439 | void zero (void *x) | |
1440 | { | |
a52d1562 | 1441 | __builtin_memset (x, 0, 1000); |
d555194c UD |
1442 | } |
1443 | EOF | |
1444 | dnl | |
1445 | if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "memset" > /dev/null]); | |
1446 | then | |
1447 | libc_cv_gcc_builtin_memset=no | |
1448 | else | |
1449 | libc_cv_gcc_builtin_memset=yes | |
1450 | fi | |
1451 | rm -f conftest* ]) | |
1452 | if test "$libc_cv_gcc_builtin_memset" = yes ; then | |
1453 | AC_DEFINE(HAVE_BUILTIN_MEMSET) | |
1454 | fi | |
1455 | ||
85dd1003 UD |
1456 | AC_CACHE_CHECK(for redirection of built-in functions, libc_cv_gcc_builtin_redirection, [dnl |
1457 | cat > conftest.c <<\EOF | |
1458 | extern char *strstr (const char *, const char *) __asm ("my_strstr"); | |
1459 | char *foo (const char *a, const char *b) | |
1460 | { | |
1461 | return __builtin_strstr (a, b); | |
1462 | } | |
1463 | EOF | |
1464 | dnl | |
1465 | if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "my_strstr" > /dev/null]); | |
1466 | then | |
1467 | libc_cv_gcc_builtin_redirection=yes | |
1468 | else | |
1469 | libc_cv_gcc_builtin_redirection=no | |
1470 | fi | |
1471 | rm -f conftest* ]) | |
3ce1f295 UD |
1472 | if test "$libc_cv_gcc_builtin_redirection" = no; then |
1473 | AC_MSG_ERROR([support for the symbol redirection needed]) | |
85dd1003 UD |
1474 | fi |
1475 | ||
7998fa78 AS |
1476 | dnl Determine how to disable generation of FMA instructions. |
1477 | AC_CACHE_CHECK([for compiler option to disable generation of FMA instructions], | |
1478 | libc_cv_cc_nofma, [dnl | |
1479 | libc_cv_cc_nofma= | |
1480 | for opt in -ffp-contract=off -mno-fused-madd; do | |
1481 | LIBC_TRY_CC_OPTION([$opt], [libc_cv_cc_nofma=$opt; break]) | |
1482 | done]) | |
bef0b507 | 1483 | AC_SUBST(libc_cv_cc_nofma) |
7998fa78 | 1484 | |
2cf9ad57 RM |
1485 | if test -n "$submachine"; then |
1486 | AC_CACHE_CHECK([for compiler option for CPU variant], | |
f7d82dc9 | 1487 | libc_cv_cc_submachine, [dnl |
2cf9ad57 RM |
1488 | libc_cv_cc_submachine=no |
1489 | for opt in "-march=$submachine" "-mcpu=$submachine"; do | |
40b601fb | 1490 | LIBC_TRY_CC_OPTION([$opt], [ |
2cf9ad57 | 1491 | libc_cv_cc_submachine="$opt" |
40b601fb | 1492 | break], []) |
2cf9ad57 RM |
1493 | done]) |
1494 | if test "x$libc_cv_cc_submachine" = xno; then | |
1495 | AC_MSG_ERROR([${CC-cc} does not support $submachine]) | |
1496 | fi | |
1497 | fi | |
1498 | AC_SUBST(libc_cv_cc_submachine) | |
1499 | ||
85c2e611 AZ |
1500 | AC_CACHE_CHECK(if $CC accepts -fno-tree-loop-distribute-patterns with \ |
1501 | __attribute__ ((__optimize__)), libc_cv_cc_loop_to_function, [dnl | |
1502 | cat > conftest.c <<EOF | |
1503 | void | |
1504 | __attribute__ ((__optimize__ ("-fno-tree-loop-distribute-patterns"))) | |
1505 | foo (void) {} | |
1506 | EOF | |
1507 | libc_cv_cc_loop_to_function=no | |
1508 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c]) | |
1509 | then | |
1510 | libc_cv_cc_loop_to_function=yes | |
1511 | fi | |
1512 | rm -f conftest*]) | |
1513 | if test $libc_cv_cc_loop_to_function = yes; then | |
1514 | AC_DEFINE(HAVE_CC_INHIBIT_LOOP_TO_LIBCALL) | |
1515 | fi | |
1516 | AC_SUBST(libc_cv_cc_loop_to_function) | |
1517 | ||
c8f3e6db UD |
1518 | dnl Check whether we have the gd library available. |
1519 | AC_MSG_CHECKING(for libgd) | |
6dab8688 UD |
1520 | if test "$with_gd" != "no"; then |
1521 | old_CFLAGS="$CFLAGS" | |
1522 | CFLAGS="$CFLAGS $libgd_include" | |
1523 | old_LDFLAGS="$LDFLAGS" | |
1524 | LDFLAGS="$LDFLAGS $libgd_ldflags" | |
1525 | old_LIBS="$LIBS" | |
1526 | LIBS="$LIBS -lgd -lpng -lz -lm" | |
1527 | AC_TRY_LINK([#include <gd.h>], [gdImagePng (0, 0)], LIBGD=yes, LIBGD=no) | |
1528 | CFLAGS="$old_CFLAGS" | |
1529 | LDFLAGS="$old_LDFLAGS" | |
1530 | LIBS="$old_LIBS" | |
1531 | else | |
1532 | LIBGD=no | |
1533 | fi | |
c8f3e6db UD |
1534 | AC_MSG_RESULT($LIBGD) |
1535 | AC_SUBST(LIBGD) | |
3d558f4e | 1536 | |
2fff3d93 UD |
1537 | # SELinux detection |
1538 | if test x$with_selinux = xno ; then | |
1539 | have_selinux=no; | |
1540 | else | |
1541 | # See if we have the SELinux library | |
1542 | AC_CHECK_LIB(selinux, is_selinux_enabled, | |
1543 | have_selinux=yes, have_selinux=no) | |
49155d51 | 1544 | if test x$with_selinux = xyes ; then |
2fff3d93 | 1545 | if test x$have_selinux = xno ; then |
0699f766 | 1546 | AC_MSG_ERROR([SELinux explicitly required, but SELinux library not found]) |
2fff3d93 UD |
1547 | fi |
1548 | fi | |
1549 | fi | |
1550 | # Check if we're building with SELinux support. | |
1551 | if test "x$have_selinux" = xyes; then | |
943db9eb | 1552 | AC_DEFINE(HAVE_SELINUX, 1, [SELinux support]) |
ec23b9be UD |
1553 | |
1554 | # See if we have the libaudit library | |
943db9eb | 1555 | AC_CHECK_LIB(audit, audit_log_user_avc_message, |
77e8bddf | 1556 | have_libaudit=yes, have_libaudit=no) |
ec23b9be | 1557 | if test "x$have_libaudit" = xyes; then |
943db9eb | 1558 | AC_DEFINE(HAVE_LIBAUDIT, 1, [SELinux libaudit support]) |
ec23b9be UD |
1559 | fi |
1560 | AC_SUBST(have_libaudit) | |
1f063dca UD |
1561 | |
1562 | # See if we have the libcap library | |
1563 | AC_CHECK_LIB(cap, cap_init, have_libcap=yes, have_libcap=no) | |
1564 | if test "x$have_libcap" = xyes; then | |
1565 | AC_DEFINE(HAVE_LIBCAP, 1, [SELinux libcap support]) | |
1566 | fi | |
1567 | AC_SUBST(have_libcap) | |
2fff3d93 UD |
1568 | fi |
1569 | AC_SUBST(have_selinux) | |
1570 | ||
61653dfb RM |
1571 | CPPUNDEFS= |
1572 | dnl Check for silly hacked compilers predefining _FORTIFY_SOURCE. | |
1573 | dnl Since we are building the implementations of the fortified functions here, | |
1574 | dnl having the macro defined interacts very badly. | |
1575 | AC_CACHE_CHECK([for _FORTIFY_SOURCE predefine], libc_cv_predef_fortify_source, | |
1576 | [AC_TRY_COMPILE([], [ | |
1577 | #ifdef _FORTIFY_SOURCE | |
1578 | # error bogon | |
1579 | #endif], | |
1580 | [libc_cv_predef_fortify_source=no], | |
1581 | [libc_cv_predef_fortify_source=yes])]) | |
1582 | if test $libc_cv_predef_fortify_source = yes; then | |
1583 | CPPUNDEFS="${CPPUNDEFS:+$CPPUNDEFS }-U_FORTIFY_SOURCE" | |
1584 | fi | |
1585 | AC_SUBST(CPPUNDEFS) | |
1586 | ||
30b99d79 RM |
1587 | dnl Check for silly hacked compilers inserting -fstack-protector. |
1588 | dnl This breaks badly for the early startup code we compile, since | |
1589 | dnl the compiled code can refer to a magic machine-dependent location | |
1590 | dnl for the canary value before we have sufficient setup for that to | |
1591 | dnl work. It's also questionable to build all of libc with this flag | |
1592 | dnl even when you're doing that for most applications you build, since | |
1593 | dnl libc's code is so heavily-used and performance-sensitive. If we | |
1594 | dnl ever really want to make that work, it should be enabled explicitly | |
1595 | dnl in the libc build, not inherited from implicit compiler settings. | |
1596 | AC_CACHE_CHECK([whether $CC implicitly enables -fstack-protector], | |
1597 | libc_cv_predef_stack_protector, [ | |
1598 | AC_TRY_COMPILE([extern void foobar (char *);], | |
1599 | [char large_array[2048]; foobar (large_array);], [ | |
1600 | libc_undefs=`$NM -u conftest.o | | |
1601 | LC_ALL=C $AWK '$1 == "U" { print $2 | "sort -u"; next } { exit(1) }' \ | |
1602 | 2>&AS_MESSAGE_LOG_FD` || { | |
1603 | AC_MSG_ERROR([confusing output from $NM -u]) | |
1604 | } | |
1605 | echo >&AS_MESSAGE_LOG_FD "libc_undefs='$libc_undefs'" | |
59f0c22e JM |
1606 | # On some architectures, there are architecture-specific undefined |
1607 | # symbols (resolved by the linker), so filter out unknown symbols. | |
1608 | # This will fail to produce the correct result if the compiler | |
1609 | # defaults to -fstack-protector but this produces an undefined symbol | |
1610 | # other than __stack_chk_fail. However, compilers like that have not | |
1611 | # been encountered in practice. | |
1612 | libc_undefs=`echo "$libc_undefs" | egrep '^(foobar|__stack_chk_fail)$'` | |
30b99d79 RM |
1613 | case "$libc_undefs" in |
1614 | foobar) libc_cv_predef_stack_protector=no ;; | |
1615 | '__stack_chk_fail | |
1616 | foobar') libc_cv_predef_stack_protector=yes ;; | |
1617 | *) AC_MSG_ERROR([unexpected symbols in test: $libc_undefs]) ;; | |
1618 | esac], | |
1619 | [AC_MSG_ERROR([test compilation failed])]) | |
1620 | ]) | |
1621 | libc_extra_cflags= | |
1622 | if test $libc_cv_predef_stack_protector = yes; then | |
7ffa9423 | 1623 | libc_extra_cflags="$libc_extra_cflags -fno-stack-protector" |
30b99d79 | 1624 | fi |
7ffa9423 | 1625 | libc_extra_cppflags= |
30b99d79 | 1626 | |
61b1ef6e MF |
1627 | # Some linkers on some architectures support __ehdr_start but with |
1628 | # bugs. Make sure usage of it does not create relocations in the | |
1629 | # output (as the linker should resolve them all for us). | |
1630 | AC_CACHE_CHECK([whether the linker provides working __ehdr_start], | |
44c4e5d5 RM |
1631 | libc_cv_ehdr_start, [ |
1632 | old_CFLAGS="$CFLAGS" | |
1633 | old_LDFLAGS="$LDFLAGS" | |
1634 | old_LIBS="$LIBS" | |
1635 | CFLAGS="$CFLAGS -fPIC" | |
1636 | LDFLAGS="$LDFLAGS -nostdlib -nostartfiles -shared" | |
1637 | LIBS= | |
1638 | AC_LINK_IFELSE([AC_LANG_SOURCE([ | |
61b1ef6e MF |
1639 | typedef struct { |
1640 | char foo; | |
1641 | long val; | |
1642 | } Ehdr; | |
1643 | extern const Ehdr __ehdr_start __attribute__ ((visibility ("hidden"))); | |
1644 | long ehdr (void) { return __ehdr_start.val; } | |
44c4e5d5 | 1645 | ])], |
61b1ef6e MF |
1646 | [if $READELF -r conftest | fgrep __ehdr_start >/dev/null; then |
1647 | libc_cv_ehdr_start=broken | |
1648 | else | |
1649 | libc_cv_ehdr_start=yes | |
1650 | fi], [libc_cv_ehdr_start=no]) | |
44c4e5d5 RM |
1651 | CFLAGS="$old_CFLAGS" |
1652 | LDFLAGS="$old_LDFLAGS" | |
1653 | LIBS="$old_LIBS" | |
1654 | ]) | |
61b1ef6e | 1655 | if test "$libc_cv_ehdr_start" = yes; then |
44c4e5d5 | 1656 | AC_DEFINE([HAVE_EHDR_START]) |
61b1ef6e MF |
1657 | elif test "$libc_cv_ehdr_start" = broken; then |
1658 | AC_MSG_WARN([linker is broken -- you should upgrade]) | |
9fe7e787 RM |
1659 | fi |
1660 | ||
1661 | AC_CACHE_CHECK(for __builtin_trap with no external dependencies, | |
1662 | libc_cv_builtin_trap, [dnl | |
1663 | libc_cv_builtin_trap=no | |
1664 | AC_TRY_COMPILE([], [__builtin_trap ()], [ | |
1665 | libc_undefs=`$NM -u conftest.o | | |
1666 | LC_ALL=C $AWK '$1 == "U" { print $2 | "sort -u"; next } { exit(1) }' \ | |
1667 | 2>&AS_MESSAGE_LOG_FD` || { | |
1668 | AC_MSG_ERROR([confusing output from $NM -u]) | |
1669 | } | |
1670 | echo >&AS_MESSAGE_LOG_FD "libc_undefs='$libc_undefs'" | |
1671 | if test -z "$libc_undefs"; then | |
1672 | libc_cv_builtin_trap=yes | |
1673 | fi])]) | |
1674 | if test $libc_cv_builtin_trap = yes; then | |
1675 | AC_DEFINE([HAVE_BUILTIN_TRAP]) | |
44c4e5d5 RM |
1676 | fi |
1677 | ||
99e1dc0a FW |
1678 | dnl C++ feature tests. |
1679 | AC_LANG_PUSH([C++]) | |
1680 | ||
1681 | AC_CACHE_CHECK([whether the C++ compiler supports thread_local], | |
1682 | libc_cv_cxx_thread_local, [ | |
1683 | old_CXXFLAGS="$CXXFLAGS" | |
1684 | CXXFLAGS="$CXXFLAGS -std=gnu++11" | |
1685 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([ | |
1686 | #include <thread> | |
1687 | ||
1688 | // Compiler support. | |
1689 | struct S | |
1690 | { | |
1691 | S (); | |
1692 | ~S (); | |
1693 | }; | |
1694 | thread_local S s; | |
1695 | S * get () { return &s; } | |
1696 | ||
1697 | // libstdc++ support. | |
1698 | #ifndef _GLIBCXX_HAVE___CXA_THREAD_ATEXIT_IMPL | |
1699 | #error __cxa_thread_atexit_impl not supported | |
1700 | #endif | |
1701 | ])], | |
1702 | [libc_cv_cxx_thread_local=yes], | |
1703 | [libc_cv_cxx_thread_local=no]) | |
1704 | CXXFLAGS="$old_CXXFLAGS" | |
1705 | ]) | |
1706 | AC_SUBST(libc_cv_cxx_thread_local) | |
1707 | ||
1708 | AC_LANG_POP([C++]) | |
1709 | dnl End of C++ feature tests. | |
1710 | ||
c224a18a RM |
1711 | ### End of automated tests. |
1712 | ### Now run sysdeps configure fragments. | |
1713 | ||
cb343854 | 1714 | # They also can set these variables. |
591e1ffb | 1715 | use_ldconfig=no |
cb343854 | 1716 | ldd_rewrite_script=no |
77259608 | 1717 | libc_cv_sysconfdir=$sysconfdir |
4248b1b1 | 1718 | libc_cv_localstatedir=$localstatedir |
74bd2300 | 1719 | libc_cv_gcc_unwind_find_fde=no |
e2fd3cbe | 1720 | libc_cv_idn=no |
cb343854 | 1721 | |
28f540f4 | 1722 | # Iterate over all the sysdep directories we will use, running their |
09055553 | 1723 | # configure fragments. |
28f540f4 | 1724 | for dir in $sysnames; do |
57ba7bb4 UD |
1725 | case $dir in |
1726 | /*) dest=$dir ;; | |
1727 | *) dest=$srcdir/$dir ;; | |
1728 | esac | |
1729 | if test -r $dest/configure; then | |
d1149385 | 1730 | AC_MSG_RESULT(running configure fragment for $dir) |
57ba7bb4 | 1731 | . $dest/configure |
28f540f4 | 1732 | fi |
28f540f4 RM |
1733 | done |
1734 | ||
5695d46f AS |
1735 | if test x"$build_mathvec" = xnotset; then |
1736 | build_mathvec=no | |
1737 | fi | |
1738 | LIBC_CONFIG_VAR([build-mathvec], [$build_mathvec]) | |
1739 | ||
7ffa9423 AZ |
1740 | AC_SUBST(libc_extra_cflags) |
1741 | AC_SUBST(libc_extra_cppflags) | |
1742 | ||
74bd2300 UD |
1743 | if test x$libc_cv_gcc_unwind_find_fde = xyes; then |
1744 | AC_DEFINE(EXPORT_UNWIND_FIND_FDE) | |
1745 | fi | |
1746 | AC_SUBST(libc_cv_gcc_unwind_find_fde) | |
1747 | ||
6e6249d0 RM |
1748 | # A sysdeps configure fragment can reset this if IFUNC is not actually |
1749 | # usable even though the assembler knows how to generate the symbol type. | |
1750 | if test x"$libc_cv_ld_gnu_indirect_function" = xyes; then | |
1751 | AC_DEFINE(HAVE_IFUNC) | |
1752 | fi | |
1753 | ||
3cc3ef96 RM |
1754 | # This is far from the AC_ARG_ENABLE that sets it so that a sysdeps |
1755 | # configure fragment can override the value to prevent this AC_DEFINE. | |
1756 | AC_SUBST(use_nscd) | |
1757 | if test "x$use_nscd" != xno; then | |
1758 | AC_DEFINE([USE_NSCD]) | |
1759 | fi | |
c53d909c RM |
1760 | if test "x$build_nscd" = xdefault; then |
1761 | build_nscd=$use_nscd | |
1762 | fi | |
3cc3ef96 | 1763 | |
84384f5b | 1764 | AC_SUBST(libc_cv_slibdir) |
aaa8cb4b | 1765 | AC_SUBST(libc_cv_rtlddir) |
a1d84548 | 1766 | AC_SUBST(libc_cv_localedir) |
77259608 | 1767 | AC_SUBST(libc_cv_sysconfdir) |
4248b1b1 | 1768 | AC_SUBST(libc_cv_localstatedir) |
1ef32c3d UD |
1769 | AC_SUBST(libc_cv_rootsbindir) |
1770 | ||
f57f8055 RM |
1771 | if test x$use_ldconfig = xyes; then |
1772 | AC_DEFINE(USE_LDCONFIG) | |
1773 | fi | |
591e1ffb | 1774 | AC_SUBST(use_ldconfig) |
cb343854 | 1775 | AC_SUBST(ldd_rewrite_script) |
84384f5b | 1776 | |
650425ce | 1777 | AC_SUBST(static) |
ff3d7ed3 | 1778 | AC_SUBST(shared) |
a334319f | 1779 | |
ff886b82 UD |
1780 | AC_CACHE_CHECK([whether -fPIC is default], libc_cv_pic_default, |
1781 | [libc_cv_pic_default=yes | |
cc3fa755 | 1782 | cat > conftest.c <<EOF |
9756dfe1 | 1783 | #if defined __PIC__ || defined __pic__ || defined PIC || defined pic |
cc3fa755 UD |
1784 | # error PIC is default. |
1785 | #endif | |
1786 | EOF | |
0b4ee387 | 1787 | if eval "${CC-cc} -S conftest.c 2>&AS_MESSAGE_LOG_FD 1>&AS_MESSAGE_LOG_FD"; then |
ff886b82 | 1788 | libc_cv_pic_default=no |
cc3fa755 UD |
1789 | fi |
1790 | rm -f conftest.*]) | |
ff886b82 | 1791 | AC_SUBST(libc_cv_pic_default) |
cc3fa755 | 1792 | |
cc08749b L |
1793 | AC_CACHE_CHECK([whether -fPIE is default], libc_cv_pie_default, |
1794 | [libc_cv_pie_default=yes | |
1795 | cat > conftest.c <<EOF | |
1796 | #if defined __PIE__ || defined __pie__ || defined PIE || defined pie | |
1797 | # error PIE is default. | |
1798 | #endif | |
1799 | EOF | |
1800 | if eval "${CC-cc} -S conftest.c 2>&AS_MESSAGE_LOG_FD 1>&AS_MESSAGE_LOG_FD"; then | |
1801 | libc_cv_pie_default=no | |
1802 | fi | |
1803 | rm -f conftest.*]) | |
1804 | AC_SUBST(libc_cv_pie_default) | |
1805 | ||
ff3d7ed3 | 1806 | AC_SUBST(profile) |
5107cf1d | 1807 | AC_SUBST(static_nss) |
ff3d7ed3 | 1808 | |
edf5b2d7 UD |
1809 | AC_SUBST(DEFINES) |
1810 | ||
cb8a6dbd | 1811 | dnl See sysdeps/mach/configure.ac for this variable. |
61c83c3f RM |
1812 | AC_SUBST(mach_interface_list) |
1813 | ||
ee74a442 UD |
1814 | VERSION=`sed -n -e 's/^#define VERSION "\([^"]*\)"/\1/p' < $srcdir/version.h` |
1815 | RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h` | |
df4ef2ab | 1816 | AC_SUBST(VERSION) |
ee74a442 | 1817 | AC_SUBST(RELEASE) |
df4ef2ab | 1818 | |
728e272a | 1819 | AC_CONFIG_FILES([config.make Makefile]) |
c118d634 | 1820 | AC_CONFIG_COMMANDS([default],[[ |
737547be UD |
1821 | case $CONFIG_FILES in *config.make*) |
1822 | echo "$config_vars" >> config.make;; | |
1823 | esac | |
c118d634 RM |
1824 | test -d bits || mkdir bits]],[[config_vars='$config_vars']]) |
1825 | AC_OUTPUT |