]>
Commit | Line | Data |
---|---|---|
f4017d20 | 1 | dnl Process this file with autoconf to produce a configure script. |
3a12e572 | 2 | AC_PREREQ(2.53)dnl dnl Minimum Autoconf version required. |
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 | |
918b5606 L |
8 | # Glibc should not depend on any header files |
9 | AC_DEFUN([_AC_INCLUDES_DEFAULT_REQUIREMENTS], | |
10 | [m4_divert_text([DEFAULTS], | |
11 | [ac_includes_default='/* none */'])]) | |
12 | ||
7967983f RM |
13 | dnl This is here so we can set $subdirs directly based on configure fragments. |
14 | AC_CONFIG_SUBDIRS() | |
15 | ||
c16a054d AS |
16 | AC_CANONICAL_HOST |
17 | ||
c0bac8b0 UD |
18 | AC_PROG_CC |
19 | if test $host != $build; then | |
20 | AC_CHECK_PROGS(BUILD_CC, gcc cc) | |
21 | fi | |
22 | AC_SUBST(cross_compiling) | |
23 | AC_PROG_CPP | |
24 | # We need the C++ compiler only for testing. | |
25 | AC_PROG_CXX | |
26 | ||
c72637d4 RM |
27 | if test "`cd $srcdir; /bin/pwd`" = "`/bin/pwd`"; then |
28 | AC_MSG_ERROR([you must configure in a separate build directory]) | |
29 | fi | |
30 | ||
28f540f4 RM |
31 | # This will get text that should go into config.make. |
32 | config_vars= | |
33 | ||
c8f3e6db | 34 | # Check for a --with-gd argument and set libgd-LDFLAGS in config.make. |
6b7f6183 | 35 | AC_ARG_WITH([gd], |
77e8bddf AS |
36 | AC_HELP_STRING([--with-gd=DIR], |
37 | [find libgd include dir and library with prefix DIR]), | |
c8f3e6db UD |
38 | [dnl |
39 | case "$with_gd" in | |
f5f7239f UD |
40 | yes|''|no) ;; |
41 | *) libgd_include="-I$withval/include" | |
c8f3e6db UD |
42 | libgd_ldflags="-L$withval/lib" ;; |
43 | esac | |
44 | ]) | |
6b7f6183 | 45 | AC_ARG_WITH([gd-include], |
77e8bddf AS |
46 | AC_HELP_STRING([--with-gd-include=DIR], |
47 | [find libgd include files in DIR]), | |
48 | [dnl | |
f5f7239f UD |
49 | case "$with_gd_include" in |
50 | ''|no) ;; | |
51 | *) libgd_include="-I$withval" ;; | |
52 | esac | |
53 | ]) | |
6b7f6183 | 54 | AC_ARG_WITH([gd-lib], |
77e8bddf AS |
55 | AC_HELP_STRING([--with-gd-lib=DIR], |
56 | [find libgd library files in DIR]), | |
57 | [dnl | |
f5f7239f UD |
58 | case "$with_gd_lib" in |
59 | ''|no) ;; | |
60 | *) libgd_ldflags="-L$withval" ;; | |
61 | esac | |
62 | ]) | |
63 | ||
64 | if test -n "$libgd_include"; then | |
65 | config_vars="$config_vars | |
cf90163d | 66 | CFLAGS-memusagestat.c = $libgd_include" |
f5f7239f UD |
67 | fi |
68 | if test -n "$libgd_ldflags"; then | |
69 | config_vars="$config_vars | |
70 | libgd-LDFLAGS = $libgd_ldflags" | |
71 | fi | |
28f540f4 | 72 | |
ff3d7ed3 | 73 | dnl Arguments to specify presence of other packages/features. |
6b7f6183 | 74 | AC_ARG_WITH([fp], |
77e8bddf AS |
75 | AC_HELP_STRING([--with-fp], |
76 | [if using floating-point hardware @<:@default=yes@:>@]), | |
6b7f6183 RM |
77 | [with_fp=$withval], |
78 | [with_fp=yes]) | |
675322a5 | 79 | AC_SUBST(with_fp) |
6b7f6183 | 80 | AC_ARG_WITH([binutils], |
77e8bddf AS |
81 | AC_HELP_STRING([--with-binutils=PATH], |
82 | [specify location of binutils (as and ld)]), | |
6b7f6183 RM |
83 | [path_binutils=$withval], |
84 | [path_binutils='']) | |
2fff3d93 | 85 | AC_ARG_WITH([selinux], |
77e8bddf AS |
86 | AC_HELP_STRING([--with-selinux], |
87 | [if building with SELinux support]), | |
2fff3d93 UD |
88 | [with_selinux=$withval], |
89 | [with_selinux=auto]) | |
28f540f4 | 90 | |
6b7f6183 | 91 | AC_ARG_WITH([headers], |
77e8bddf AS |
92 | AC_HELP_STRING([--with-headers=PATH], |
93 | [location of system headers to use | |
6b7f6183 RM |
94 | (for example /usr/src/linux/include) |
95 | @<:@default=compiler default@:>@]), | |
96 | [sysheaders=$withval], | |
97 | [sysheaders='']) | |
dbe7a0f5 | 98 | |
f781ef40 RM |
99 | AC_SUBST(use_default_link) |
100 | AC_ARG_WITH([default-link], | |
101 | AC_HELP_STRING([--with-default-link], | |
fd5e21c7 | 102 | [do not use explicit linker scripts]), |
f781ef40 | 103 | [use_default_link=$withval], |
fd5e21c7 | 104 | [use_default_link=default]) |
f781ef40 | 105 | |
6b7f6183 | 106 | AC_ARG_ENABLE([sanity-checks], |
77e8bddf AS |
107 | AC_HELP_STRING([--disable-sanity-checks], |
108 | [really do not use threads (should not be used except in special situations) @<:@default=yes@:>@]), | |
6b7f6183 RM |
109 | [enable_sanity=$enableval], |
110 | [enable_sanity=yes]) | |
a18f587d | 111 | |
6b7f6183 | 112 | AC_ARG_ENABLE([shared], |
77e8bddf | 113 | AC_HELP_STRING([--enable-shared], |
a0da5fe1 | 114 | [build shared library @<:@default=yes if GNU ld@:>@]), |
6b7f6183 | 115 | [shared=$enableval], |
a0da5fe1 | 116 | [shared=yes]) |
6b7f6183 | 117 | AC_ARG_ENABLE([profile], |
77e8bddf AS |
118 | AC_HELP_STRING([--enable-profile], |
119 | [build profiled library @<:@default=no@:>@]), | |
6b7f6183 | 120 | [profile=$enableval], |
11bf311e | 121 | [profile=no]) |
6b7f6183 | 122 | AC_ARG_ENABLE([versioning], |
77e8bddf AS |
123 | AC_HELP_STRING([--disable-versioning], |
124 | [do not include versioning information in the library objects @<:@default=yes if supported@:>@]), | |
6b7f6183 RM |
125 | [enable_versioning=$enableval], |
126 | [enable_versioning=yes]) | |
127 | ||
128 | AC_ARG_ENABLE([oldest-abi], | |
77e8bddf AS |
129 | AC_HELP_STRING([--enable-oldest-abi=ABI], |
130 | [configure the oldest ABI supported @<:@e.g. 2.2@:>@ @<:@default=glibc default@:>@]), | |
6b7f6183 RM |
131 | [oldest_abi=$enableval], |
132 | [oldest_abi=no]) | |
62ab42d6 UD |
133 | if test "$oldest_abi" = yes || test "$oldest_abi" = no; then |
134 | oldest_abi=default | |
135 | else | |
136 | AC_DEFINE_UNQUOTED(GLIBC_OLDEST_ABI, "$oldest_abi") | |
137 | fi | |
138 | AC_SUBST(oldest_abi) | |
139 | ||
35f1e827 UD |
140 | AC_ARG_ENABLE([stackguard-randomization], |
141 | AC_HELP_STRING([--enable-stackguard-randomization], | |
142 | [initialize __stack_chk_guard canary with a random number at program start]), | |
143 | [enable_stackguard_randomize=$enableval], | |
144 | [enable_stackguard_randomize=no]) | |
145 | if test "$enable_stackguard_randomize" = yes; then | |
146 | AC_DEFINE(ENABLE_STACKGUARD_RANDOMIZE) | |
147 | fi | |
148 | ||
6b3a2224 | 149 | dnl Generic infrastructure for drop-in additions to libc. |
6b7f6183 | 150 | AC_ARG_ENABLE([add-ons], |
77e8bddf AS |
151 | AC_HELP_STRING([--enable-add-ons@<:@=DIRS...@:>@], |
152 | [configure and build add-ons in DIR1,DIR2,... | |
153 | search for add-ons if no parameter given]), | |
e0a3ed4f | 154 | , [enable_add_ons=yes]) |
61952351 | 155 | |
6b7f6183 | 156 | AC_ARG_ENABLE([hidden-plt], |
77e8bddf AS |
157 | AC_HELP_STRING([--disable-hidden-plt], |
158 | [do not hide internal function calls to avoid PLT]), | |
6b7f6183 RM |
159 | [hidden=$enableval], |
160 | [hidden=yes]) | |
749a9a4f RM |
161 | if test "x$hidden" = xno; then |
162 | AC_DEFINE(NO_HIDDEN) | |
163 | fi | |
164 | ||
4df8c11d UD |
165 | AC_ARG_ENABLE([bind-now], |
166 | AC_HELP_STRING([--enable-bind-now], | |
167 | [disable lazy relocations in DSOs]), | |
168 | [bindnow=$enableval], | |
169 | [bindnow=no]) | |
170 | AC_SUBST(bindnow) | |
171 | ||
5107cf1d UD |
172 | dnl On some platforms we cannot use dynamic loading. We must provide |
173 | dnl static NSS modules. | |
6b7f6183 | 174 | AC_ARG_ENABLE([static-nss], |
77e8bddf AS |
175 | AC_HELP_STRING([--enable-static-nss], |
176 | [build static NSS modules @<:@default=no@:>@]), | |
6b7f6183 RM |
177 | [static_nss=$enableval], |
178 | [static_nss=no]) | |
834cef7c UD |
179 | dnl Enable static NSS also if we build no shared objects. |
180 | if test x"$static_nss" = xyes || test x"$shared" = xno; then | |
3172f58f | 181 | static_nss=yes |
5107cf1d UD |
182 | AC_DEFINE(DO_STATIC_NSS) |
183 | fi | |
184 | ||
6b7f6183 | 185 | AC_ARG_ENABLE([force-install], |
77e8bddf AS |
186 | AC_HELP_STRING([--disable-force-install], |
187 | [don't force installation of files from this package, even if they are older than the installed files]), | |
6b7f6183 RM |
188 | [force_install=$enableval], |
189 | [force_install=yes]) | |
73237de3 UD |
190 | AC_SUBST(force_install) |
191 | ||
958f238f UD |
192 | dnl On some platforms we allow dropping compatibility with all kernel |
193 | dnl versions. | |
6b7f6183 | 194 | AC_ARG_ENABLE([kernel], |
77e8bddf AS |
195 | AC_HELP_STRING([--enable-kernel=VERSION], |
196 | [compile for compatibility with kernel not older than VERSION]), | |
6b7f6183 RM |
197 | [minimum_kernel=$enableval], |
198 | []) | |
86cfe82d UD |
199 | dnl Prevent unreasonable values. |
200 | if test "$minimum_kernel" = yes || test "$minimum_kernel" = no; then | |
201 | # Better nothing than this. | |
202 | minimum_kernel="" | |
269e369f UD |
203 | else |
204 | if test "$minimum_kernel" = current; then | |
205 | minimum_kernel=`uname -r 2>/dev/null` || minimum_kernel= | |
206 | fi | |
86cfe82d | 207 | fi |
958f238f | 208 | |
6cc7d725 UD |
209 | dnl For the development we sometimes want gcc to issue even more warnings. |
210 | dnl This is not the default since many of the extra warnings are not | |
211 | dnl appropriate. | |
6b7f6183 RM |
212 | AC_ARG_ENABLE([all-warnings], |
213 | AC_HELP_STRING([--enable-all-warnings], | |
77e8bddf | 214 | [enable all useful warnings gcc can issue]), |
6b7f6183 RM |
215 | [all_warnings=$enableval], |
216 | []) | |
6cc7d725 UD |
217 | AC_SUBST(all_warnings) |
218 | ||
425ce2ed UD |
219 | AC_ARG_ENABLE([multi-arch], |
220 | AC_HELP_STRING([--enable-multi-arch], | |
221 | [enable single DSO with optimizations for multiple architectures]), | |
222 | [multi_arch=$enableval], | |
6f89d2f3 | 223 | [multi_arch=default]) |
425ce2ed | 224 | |
ff886b82 UD |
225 | AC_ARG_ENABLE([nss-crypt], |
226 | AC_HELP_STRING([--enable-nss-crypt], | |
227 | [enable libcrypt to use nss]), | |
228 | [nss_crypt=$enableval], | |
229 | [nss_crypt=no]) | |
230 | if test x$nss_crypt = xyes; then | |
231 | nss_includes=-I$(nss-config --includedir 2>/dev/null) | |
232 | if test $? -ne 0; then | |
233 | AC_MSG_ERROR([cannot find include directory with nss-config]) | |
234 | fi | |
235 | old_CFLAGS="$CFLAGS" | |
236 | CFLAGS="$CFLAGS $nss_includes" | |
b68e08db | 237 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([typedef int PRBool; |
ff886b82 UD |
238 | #include <hasht.h> |
239 | #include <nsslowhash.h> | |
b68e08db | 240 | void f (void) { NSSLOW_Init (); }])], |
ff886b82 UD |
241 | libc_cv_nss_crypt=yes, |
242 | AC_MSG_ERROR([ | |
243 | cannot find NSS headers with lowlevel hash function interfaces])) | |
244 | old_LIBS="$LIBS" | |
245 | LIBS="$LIBS -lfreebl3" | |
246 | AC_LINK_IFELSE([AC_LANG_PROGRAM([typedef int PRBool; | |
247 | #include <hasht.h> | |
248 | #include <nsslowhash.h>], | |
249 | [NSSLOW_Init();])], | |
250 | libc_cv_nss_crypt=yes, | |
251 | AC_MSG_ERROR([ | |
252 | cannot link program using lowlevel NSS hash functions])) | |
253 | CFLAGS="$old_CFLAGS" | |
254 | LIBS="$old_LIBS" | |
255 | else | |
256 | libc_cv_nss_crypt=no | |
257 | fi | |
258 | AC_SUBST(libc_cv_nss_crypt) | |
259 | ||
3a097cc7 | 260 | |
021db4be AJ |
261 | AC_ARG_ENABLE([obsolete-rpc], |
262 | AC_HELP_STRING([--enable-obsolete-rpc], | |
263 | [build and install the obsolete RPC code for link-time usage]), | |
264 | [link_obsolete_rpc=$enableval], | |
265 | [link_obsolete_rpc=no]) | |
266 | AC_SUBST(link_obsolete_rpc) | |
267 | ||
268 | if test "$link_obsolete_rpc" = yes; then | |
269 | AC_DEFINE(LINK_OBSOLETE_RPC) | |
270 | fi | |
271 | ||
3a097cc7 RM |
272 | AC_ARG_ENABLE([systemtap], |
273 | [AS_HELP_STRING([--enable-systemtap], | |
274 | [enable systemtap static probe points @<:@default=no@:>@])], | |
275 | [systemtap=$enableval], | |
276 | [systemtap=no]) | |
277 | if test "x$systemtap" != xno; then | |
278 | AC_CACHE_CHECK([for systemtap static probe support], libc_cv_sdt, [dnl | |
279 | old_CFLAGS="$CFLAGS" | |
280 | CFLAGS="-std=gnu99 $CFLAGS" | |
0e3933b9 | 281 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([[#include <sys/sdt.h> |
3a097cc7 RM |
282 | void foo (int i, void *p) |
283 | { | |
284 | asm ("" STAP_PROBE_ASM (foo, bar, STAP_PROBE_ASM_TEMPLATE (2)) "" | |
285 | :: STAP_PROBE_ASM_OPERANDS (2, i, p)); | |
0e3933b9 | 286 | }]])], [libc_cv_sdt=yes], [libc_cv_sdt=no]) |
3a097cc7 RM |
287 | CFLAGS="$old_CFLAGS"]) |
288 | if test $libc_cv_sdt = yes; then | |
289 | AC_DEFINE([USE_STAP_PROBE]) | |
290 | elif test "x$systemtap" != xauto; then | |
291 | AC_MSG_FAILURE([systemtap support needs sys/sdt.h with asm support]) | |
292 | fi | |
293 | fi | |
294 | ||
8a523922 UD |
295 | # The way shlib-versions is used to generate soversions.mk uses a |
296 | # fairly simplistic model for name recognition that can't distinguish | |
297 | # i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os | |
298 | # of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can | |
299 | # tell. This doesn't get used much beyond that, so it's fairly safe. | |
300 | case "$host_os" in | |
301 | linux*) | |
302 | ;; | |
303 | gnu*) | |
304 | host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'` | |
305 | ;; | |
306 | esac | |
307 | ||
28f540f4 RM |
308 | # We keep the original values in `$config_*' and never modify them, so we |
309 | # can write them unchanged into config.make. Everything else uses | |
310 | # $machine, $vendor, and $os, and changes them whenever convenient. | |
311 | config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os | |
312 | ||
2f64b655 UD |
313 | # Don't allow vendor == "unknown" |
314 | test "$config_vendor" = unknown && config_vendor= | |
315 | config_os="`echo $config_os | sed 's/^unknown-//'`" | |
316 | ||
a2fe9c76 | 317 | # Some configurations imply other options. |
0269750c | 318 | elf=yes |
a2fe9c76 | 319 | |
8f73811b RM |
320 | # The configure fragment of an add-on port can modify these to supplement |
321 | # or override the table in the case statement below. No fragment should | |
322 | # ever change the config_* variables, however. | |
28f540f4 RM |
323 | machine=$config_machine |
324 | vendor=$config_vendor | |
325 | os=$config_os | |
b22d21b3 | 326 | base_os='' |
28f540f4 | 327 | |
a808d541 UD |
328 | # config.guess on some IBM machines says `rs6000' instead of `powerpc'. |
329 | # Unify this here. | |
330 | if test "$machine" = rs6000; then | |
331 | machine="powerpc" | |
332 | fi | |
333 | ||
f4b07664 RM |
334 | # Braindead PowerPC box with absolutely no FPU. |
335 | case "$machine-$host_os" in | |
336 | powerpc*-*soft) | |
337 | with_fp=no | |
338 | ;; | |
339 | esac | |
340 | ||
2ceaa76a RM |
341 | submachine= |
342 | AC_ARG_WITH([cpu], | |
343 | AS_HELP_STRING([--with-cpu=CPU], [select code for CPU variant]), | |
344 | [dnl | |
345 | case "$withval" in | |
346 | yes|'') AC_MSG_ERROR([--with-cpu requires an argument]) ;; | |
347 | no) ;; | |
348 | *) submachine="$withval" ;; | |
349 | esac | |
350 | ]) | |
351 | ||
10a803e0 RM |
352 | dnl Let sysdeps/*/preconfigure act here, like they can in add-ons. |
353 | LIBC_PRECONFIGURE([$srcdir], [for sysdeps]) | |
354 | ||
e0a3ed4f | 355 | # An add-on can set this when it wants to disable the sanity check below. |
8f73811b RM |
356 | libc_config_ok=no |
357 | ||
358 | dnl Having this here, though empty, makes sure that if add-ons' fragments | |
359 | dnl do AC_CONFIG_SUBDIRS([some-dir]), which just sets $subdirs, then | |
360 | dnl our AC_OUTPUT will actually use it. | |
361 | AC_CONFIG_SUBDIRS() | |
362 | ||
e0a3ed4f RM |
363 | case "$enable_add_ons" in |
364 | ''|no) add_ons= ;; | |
365 | yes|'*') | |
366 | add_ons=`cd $srcdir && ls -d 2> /dev/null */configure */sysdeps | | |
367 | sed 's@/[[^/]]*$@@' | sort | uniq` | |
368 | add_ons_automatic=yes | |
369 | ;; | |
370 | *) add_ons=`echo "$enable_add_ons" | sed 's/,/ /g'` | |
371 | add_ons_automatic=no ;; | |
372 | esac | |
373 | ||
374 | configured_add_ons= | |
8f73811b RM |
375 | add_ons_sfx= |
376 | add_ons_pfx= | |
377 | if test x"$add_ons" != x; then | |
378 | for f in $add_ons; do | |
379 | # Some sanity checks | |
380 | case "$f" in | |
381 | crypt) | |
382 | AC_MSG_ERROR([ | |
383 | *** It seems that you're using an old \`crypt' add-on. crypt is now | |
384 | *** part of glibc and using the old add-on will not work with this | |
385 | *** release. Start again with fresh sources and without the old | |
386 | *** \`crypt' add-on.]) | |
387 | ;; | |
388 | localedata) | |
389 | AC_MSG_ERROR([ | |
390 | *** It seems that you're using an old \`localedata' add-on. localedata | |
391 | *** is now part of glibc and using the old add-on will not work with | |
392 | *** this release. Start again with fresh sources and without the old | |
393 | *** \`localedata' add-on.]) | |
394 | ;; | |
395 | esac | |
8f73811b RM |
396 | done |
397 | ||
9382fcee | 398 | # Now source each add-on's configure fragment. |
c80e931a RM |
399 | # The fragments can use $srcdir/$libc_add_on to find themselves, |
400 | # and test $add_ons_automatic to see if they were explicitly requested. | |
401 | # A fragment can clear (or even change) $libc_add_on to affect | |
402 | # whether it goes into the list to be actually used in the build. | |
403 | use_add_ons= | |
9382fcee | 404 | for libc_add_on in $add_ons; do |
e0a3ed4f RM |
405 | # Test whether such a directory really exists. |
406 | # It can be absolute, or relative to $srcdir, or relative to the build dir. | |
407 | case "$libc_add_on" in | |
408 | /*) | |
409 | libc_add_on_srcdir=$libc_add_on | |
410 | ;; | |
411 | *) | |
412 | test -d "$srcdir/$libc_add_on" || { | |
77e8bddf | 413 | if test -d "$libc_add_on"; then |
e0a3ed4f RM |
414 | libc_add_on="`pwd`/$libc_add_on" |
415 | else | |
416 | AC_MSG_ERROR(add-on directory \"$libc_add_on\" does not exist) | |
417 | fi | |
418 | } | |
419 | libc_add_on_srcdir=$srcdir/$libc_add_on | |
420 | ;; | |
421 | esac | |
422 | ||
423 | libc_add_on_frag=$libc_add_on_srcdir/configure | |
424 | libc_add_on_canonical= | |
7967983f | 425 | libc_add_on_config_subdirs= |
e0a3ed4f RM |
426 | if test -r "$libc_add_on_frag"; then |
427 | AC_MSG_NOTICE(running configure fragment for add-on $libc_add_on) | |
428 | libc_add_on_canonical=unknown | |
429 | libc_add_on_subdirs= | |
430 | . "$libc_add_on_frag" | |
431 | test -z "$libc_add_on" || { | |
77e8bddf | 432 | configured_add_ons="$configured_add_ons $libc_add_on" |
e0a3ed4f RM |
433 | if test "x$libc_add_on_canonical" = xunknown; then |
434 | AC_MSG_ERROR(fragment must set \$libc_add_on_canonical) | |
435 | fi | |
436 | for d in $libc_add_on_subdirs; do | |
437 | case "$libc_add_on" in | |
438 | /*) subdir_srcdir="$libc_add_on" ;; | |
439 | *) subdir_srcdir="\$(..)$libc_add_on" ;; | |
440 | esac | |
441 | case "$d" in | |
442 | .) | |
443 | d="${libc_add_on_canonical:-$libc_add_on}" | |
444 | ;; | |
445 | /*) | |
446 | subdir_srcdir="$d" | |
447 | ;; | |
448 | *) | |
449 | subdir_srcdir="$subdir_srcdir/$d" | |
450 | ;; | |
451 | esac | |
452 | d=`echo "$d" | sed 's@/*$@@;s@^.*/@@'` | |
453 | add_on_subdirs="$add_on_subdirs $d" | |
454 | test "$subdir_srcdir" = "\$(..)$d" || config_vars="$config_vars | |
455 | $d-srcdir = $subdir_srcdir" | |
456 | done | |
7967983f RM |
457 | for d in $libc_add_on_config_subdirs; do |
458 | case "$d" in | |
459 | /*) AC_MSG_ERROR(dnl | |
460 | fragment uses absolute path in \$libc_add_on_config_subdirs) ;; | |
461 | esac | |
462 | if test ! -d "$libc_add_on_srcdir/$d"; then | |
463 | AC_MSG_ERROR(fragment wants to configure missing directory $d) | |
464 | fi | |
465 | case "$libc_add_on" in | |
466 | /*) AC_MSG_ERROR(dnl | |
467 | relative path required for add-on using \$libc_add_on_config_subdirs) ;; | |
468 | esac | |
469 | subdirs="$subdirs $libc_add_on/$d" | |
470 | done | |
e0a3ed4f | 471 | } |
8f73811b | 472 | fi |
619f9448 | 473 | if test -n "$libc_add_on"; then |
10a803e0 | 474 | LIBC_PRECONFIGURE([$libc_add_on_srcdir], [add-on $libc_add_on for]) |
619f9448 RM |
475 | use_add_ons="$use_add_ons $libc_add_on" |
476 | add_ons_pfx="$add_ons_pfx $libc_add_on/" | |
e0a3ed4f RM |
477 | test -z "$libc_add_on_canonical" || |
478 | add_ons_sfx="$add_ons_sfx /$libc_add_on_canonical" | |
619f9448 | 479 | fi |
8f73811b | 480 | done |
c80e931a RM |
481 | # Use echo to strip excess whitespace. |
482 | add_ons="`echo $use_add_ons`" | |
8f73811b RM |
483 | fi |
484 | AC_SUBST(add_ons) | |
e0a3ed4f | 485 | AC_SUBST(add_on_subdirs) |
8f73811b RM |
486 | |
487 | ||
bdc8eb03 UD |
488 | ### |
489 | ### I put this here to prevent those annoying emails from people who cannot | |
490 | ### read and try to compile glibc on unsupported platforms. --drepper | |
491 | ### | |
492 | ### By using the undocumented --enable-hacker-mode option for configure | |
493 | ### one can skip this test to make the configuration not fail for unsupported | |
494 | ### platforms. | |
495 | ### | |
8f73811b | 496 | if test -z "$enable_hacker_mode" && test x"$libc_config_ok" != xyes; then |
bdc8eb03 | 497 | case "$machine-$host_os" in |
2ce4f015 | 498 | *-linux* | *-gnu*) |
bdc8eb03 UD |
499 | ;; |
500 | *) | |
501 | echo "*** The GNU C library is currently not available for this platform." | |
502 | echo "*** So far nobody cared to port it and if there is no volunteer it" | |
503 | echo "*** might never happen. So, if you have interest to see glibc on" | |
504 | echo "*** this platform visit" | |
505 | echo "*** http://www.gnu.org/software/libc/porting.html" | |
506 | echo "*** and join the group of porters" | |
507 | exit 1 | |
508 | ;; | |
509 | esac | |
510 | fi | |
511 | ||
28f540f4 RM |
512 | dnl We need to use [ and ] for other purposes for a while now. |
513 | changequote(,)dnl | |
514 | # Expand the configuration machine name into a subdirectory by architecture | |
8f73811b RM |
515 | # type and particular chip. If an add-on configure fragment already set |
516 | # base_machine, we don't change it. | |
517 | test -n "$base_machine" || case "$machine" in | |
0b755dc4 | 518 | i[34567]86) base_machine=i386 machine=i386/$machine ;; |
92b27c74 UD |
519 | powerpc) base_machine=powerpc machine=powerpc/powerpc32 ;; |
520 | powerpc64) base_machine=powerpc machine=powerpc/powerpc64 ;; | |
136d4332 UD |
521 | s390) base_machine=s390 machine=s390/s390-32 ;; |
522 | s390x) base_machine=s390 machine=s390/s390-64 ;; | |
88615235 UD |
523 | sh3*) base_machine=sh machine=sh/sh3 ;; |
524 | sh4*) base_machine=sh machine=sh/sh4 ;; | |
ca34d7a7 UD |
525 | sparc | sparcv[67]) |
526 | base_machine=sparc machine=sparc/sparc32 ;; | |
527 | sparcv8 | supersparc | hypersparc) | |
528 | base_machine=sparc machine=sparc/sparc32/sparcv8 ;; | |
ae6b8730 RH |
529 | sparcv8plus | sparcv8plusa | sparcv9) |
530 | base_machine=sparc machine=sparc/sparc32/sparcv9 ;; | |
bb769ab6 | 531 | sparcv8plusb | sparcv9b) |
10c6e709 | 532 | base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9b ;; |
2d73656b RM |
533 | sparcv9v) |
534 | base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9v ;; | |
46ae8850 JJ |
535 | sparcv9v2) |
536 | base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9v2 ;; | |
b1ecbed2 | 537 | sparc64) |
ca34d7a7 | 538 | base_machine=sparc machine=sparc/sparc64 ;; |
b1ecbed2 | 539 | sparc64b) |
bb769ab6 | 540 | base_machine=sparc machine=sparc/sparc64/sparcv9b ;; |
2d73656b RM |
541 | sparc64v) |
542 | base_machine=sparc machine=sparc/sparc64/sparcv9v ;; | |
46ae8850 JJ |
543 | sparc64v2) |
544 | base_machine=sparc machine=sparc/sparc64/sparcv9v2 ;; | |
3a2832a0 | 545 | *) base_machine=$machine ;; |
28f540f4 | 546 | esac |
f0523145 RM |
547 | changequote([,])dnl |
548 | AC_SUBST(base_machine) | |
28f540f4 | 549 | |
dfd2257a UD |
550 | if test "$base_machine" = "i386"; then |
551 | AC_DEFINE(USE_REGPARMS) | |
552 | fi | |
553 | ||
84b9230c MF |
554 | # For the multi-arch option we need support in the assembler. |
555 | AC_CACHE_CHECK([for assembler gnu_indirect_function symbol type support], | |
77e8bddf | 556 | libc_cv_asm_gnu_indirect_function, [dnl |
84b9230c MF |
557 | cat > conftest.s <<EOF |
558 | .type foo,%gnu_indirect_function | |
559 | EOF | |
560 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; | |
561 | then | |
562 | libc_cv_asm_gnu_indirect_function=yes | |
563 | else | |
564 | libc_cv_asm_gnu_indirect_function=no | |
565 | fi | |
566 | rm -f conftest*]) | |
567 | ||
568 | AC_MSG_CHECKING(whether .text pseudo-op must be used) | |
569 | AC_CACHE_VAL(libc_cv_dot_text, [dnl | |
570 | cat > conftest.s <<EOF | |
571 | .text | |
572 | EOF | |
573 | libc_cv_dot_text= | |
574 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
575 | libc_cv_dot_text=.text | |
576 | fi | |
577 | rm -f conftest*]) | |
578 | if test -z "$libc_cv_dot_text"; then | |
579 | AC_MSG_RESULT(no) | |
580 | else | |
581 | AC_MSG_RESULT(yes) | |
582 | fi | |
583 | ||
84b9230c MF |
584 | AC_CACHE_CHECK(for assembler .type directive prefix, |
585 | libc_cv_asm_type_prefix, [dnl | |
586 | libc_cv_asm_type_prefix=no | |
587 | for ac_try_prefix in '@' '%' '#'; do | |
588 | cat > conftest.s <<EOF | |
589 | ${libc_cv_dot_text} | |
7b8e0d49 | 590 | .globl foo |
84b9230c MF |
591 | .type foo, ${ac_try_prefix}object |
592 | .size foo, 1 | |
593 | foo: | |
594 | .byte 1 | |
595 | EOF | |
596 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
597 | libc_cv_asm_type_prefix=${ac_try_prefix} | |
598 | fi | |
599 | rm -f conftest* | |
600 | test "x$libc_cv_asm_type_prefix" != xno && break | |
601 | done]) | |
602 | if test "x$libc_cv_asm_type_prefix" != xno; then | |
603 | AC_DEFINE_UNQUOTED(ASM_TYPE_DIRECTIVE_PREFIX, ${libc_cv_asm_type_prefix}) | |
604 | fi | |
605 | ||
6b1d1d46 | 606 | if test x"$libc_cv_asm_gnu_indirect_function" != xyes -o x"$libc_cv_asm_type_prefix" = xno; then |
84b9230c MF |
607 | if test x"$multi_arch" = xyes; then |
608 | AC_MSG_ERROR([--enable-multi-arch support requires assembler and linker support]) | |
609 | else | |
610 | multi_arch=no | |
611 | fi | |
612 | fi | |
613 | if test x"$multi_arch" != xno; then | |
614 | multi_arch_d=/multiarch | |
615 | fi | |
616 | ||
f0523145 | 617 | # Compute the list of sysdep directories for this configuration. |
f332db02 | 618 | # This can take a while to compute. |
f0523145 | 619 | sysdep_dir=$srcdir/sysdeps |
f332db02 | 620 | AC_MSG_CHECKING(sysdep dirs) |
f0523145 RM |
621 | dnl We need to use [ and ] for other purposes for a while now. |
622 | changequote(,)dnl | |
28f540f4 RM |
623 | # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1. |
624 | os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`" | |
625 | ||
b22d21b3 | 626 | test "x$base_os" != x || case "$os" in |
28f540f4 RM |
627 | gnu*) |
628 | base_os=mach/hurd ;; | |
2ce4f015 | 629 | linux*) |
28f540f4 | 630 | base_os=unix/sysv ;; |
28f540f4 RM |
631 | esac |
632 | ||
633 | # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos. | |
634 | tail=$os | |
635 | ostry=$os | |
636 | while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do | |
637 | ostry="$ostry /$o" | |
638 | tail=$o | |
75914335 | 639 | done |
28f540f4 RM |
640 | o=`echo $tail | sed 's/[0-9]*$//'` |
641 | if test $o != $tail; then | |
642 | ostry="$ostry /$o" | |
643 | fi | |
ec4b0518 UD |
644 | # For linux-gnu, try linux-gnu, then linux. |
645 | o=`echo $tail | sed 's/-.*$//'` | |
646 | if test $o != $tail; then | |
647 | ostry="$ostry /$o" | |
648 | fi | |
28f540f4 RM |
649 | |
650 | # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix. | |
651 | base= | |
652 | tail=$base_os | |
653 | while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do | |
654 | set $b | |
655 | base="$base /$1" | |
656 | tail="$2" | |
657 | done | |
658 | ||
ae6b8730 | 659 | # For sparc/sparc32, try sparc/sparc32 and then sparc. |
28f540f4 | 660 | mach= |
2ceaa76a | 661 | tail=$machine${submachine:+/$submachine} |
28f540f4 RM |
662 | while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do |
663 | set $m | |
10ceac89 RM |
664 | # Prepend the machine's FPU directory unless --without-fp. |
665 | if test "$with_fp" = yes; then | |
666 | mach="$mach /$1/fpu" | |
f4b07664 RM |
667 | else |
668 | mach="$mach /$1/nofpu" | |
82d00cab | 669 | fi |
28f540f4 RM |
670 | mach="$mach /$1" |
671 | tail="$2" | |
672 | done | |
673 | ||
674 | dnl We are done with glob and regexp uses of [ and ]; return to autoconf. | |
675 | changequote([,])dnl | |
676 | ||
677 | # Find what sysdep directories exist. | |
e0a3ed4f | 678 | sysnames_add_ons= |
28f540f4 | 679 | sysnames= |
4b69abad RM |
680 | for b in $base ''; do |
681 | for m0 in $mach ''; do | |
682 | for v in /$vendor ''; do | |
683 | test "$v" = / && continue | |
684 | for o in /$ostry ''; do | |
685 | test "$o" = / && continue | |
425ce2ed | 686 | for m in $multi_arch_d $mach ''; do |
4b69abad | 687 | for d in $add_ons_pfx ''; do |
8f73811b | 688 | for a in $add_ons_sfx ''; do |
e0a3ed4f | 689 | if test -n "$m0$m0sub$b$v$o$m$msub"; then |
77e8bddf AS |
690 | try_srcdir="${srcdir}/" |
691 | case "$d" in | |
e0a3ed4f RM |
692 | /*) try_srcdir= ;; |
693 | esac | |
4b69abad | 694 | try="${d}sysdeps$m0$m0sub$b$v$o$m$msub$a" |
8f73811b RM |
695 | test -n "$enable_debug_configure" && |
696 | echo "$0 [DEBUG]: try $try" >&2 | |
e0a3ed4f | 697 | if test -d "$try_srcdir$try"; then |
8f73811b RM |
698 | sysnames="$sysnames $try" |
699 | { test -n "$o" || test -n "$b"; } && os_used=t | |
700 | { test -n "$m" || test -n "$m0"; } && machine_used=t | |
4b69abad RM |
701 | case x${m0:-$m} in |
702 | x*/$submachine) submachine_used=t ;; | |
703 | esac | |
e0a3ed4f RM |
704 | if test -n "$d"; then |
705 | case "$sysnames_add_ons" in | |
706 | *" $d "*) ;; | |
707 | *|'') sysnames_add_ons="$sysnames_add_ons $d" ;; | |
708 | esac | |
709 | fi | |
8f73811b | 710 | fi |
57ba7bb4 | 711 | fi |
8f73811b | 712 | done |
57ba7bb4 | 713 | done |
28f540f4 RM |
714 | done |
715 | done | |
716 | done | |
717 | done | |
4b69abad | 718 | done |
28f540f4 | 719 | |
6f89d2f3 L |
720 | # If the assembler supports gnu_indirect_function symbol type and the |
721 | # architecture supports multi-arch, we enable multi-arch by default. | |
84b9230c MF |
722 | case $sysnames_add_ons$sysnames in |
723 | *"$multi_arch_d"*) | |
724 | ;; | |
725 | *) | |
77e8bddf | 726 | test x"$multi_arch" = xdefault && multi_arch=no |
84b9230c MF |
727 | ;; |
728 | esac | |
729 | if test x"$multi_arch" != xno; then | |
6f89d2f3 L |
730 | AC_DEFINE(USE_MULTIARCH) |
731 | fi | |
732 | AC_SUBST(multi_arch) | |
733 | ||
28f540f4 RM |
734 | if test -z "$os_used" && test "$os" != none; then |
735 | AC_MSG_ERROR(Operating system $os is not supported.) | |
736 | fi | |
737 | if test -z "$machine_used" && test "$machine" != none; then | |
738 | AC_MSG_ERROR(The $machine is not supported.) | |
739 | fi | |
2ceaa76a RM |
740 | if test -z "$submachine_used" && test -n "$submachine"; then |
741 | AC_MSG_ERROR(The $submachine subspecies of $host_cpu is not supported.) | |
742 | fi | |
743 | AC_SUBST(submachine) | |
28f540f4 RM |
744 | |
745 | # We have now validated the configuration. | |
746 | ||
28f540f4 RM |
747 | # Expand the list of system names into a full list of directories |
748 | # from each element's parent name and Implies file (if present). | |
749 | set $sysnames | |
e50ec9f9 | 750 | names= |
28f540f4 RM |
751 | while test $# -gt 0; do |
752 | name=$1 | |
753 | shift | |
754 | ||
e50ec9f9 | 755 | case " $names " in *" $name "*) |
f332db02 RM |
756 | # Already in the list. |
757 | continue | |
e50ec9f9 | 758 | esac |
f332db02 RM |
759 | |
760 | # Report each name as we discover it, so there is no long pause in output. | |
0b4ee387 | 761 | echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD |
f332db02 | 762 | |
57ba7bb4 UD |
763 | name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'` |
764 | ||
765 | case $name in | |
766 | /*) xsrcdir= ;; | |
767 | *) xsrcdir=$srcdir/ ;; | |
768 | esac | |
769 | test -n "$enable_debug_configure" && | |
770 | echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2 | |
771 | ||
ba75122d RM |
772 | for implies_file in Implies Implies-before Implies-after; do |
773 | implies_type=`echo $implies_file | sed s/-/_/` | |
774 | eval ${implies_type}= | |
775 | if test -f $xsrcdir$name/$implies_file; then | |
776 | # Collect more names from the `Implies' file (removing comments). | |
777 | implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/$implies_file`" | |
778 | for x in $implied_candidate; do | |
779 | found=no | |
780 | if test -d $xsrcdir$name_base/$x; then | |
781 | eval "${implies_type}=\"\$${implies_type} \$name_base/\$x\"" | |
636ccfc8 | 782 | found=yes |
ba75122d RM |
783 | fi |
784 | for d in $add_ons_pfx ''; do | |
785 | try="${d}sysdeps/$x" | |
786 | case $d in | |
787 | /*) try_srcdir= ;; | |
788 | *) try_srcdir=$srcdir/ ;; | |
e0a3ed4f | 789 | esac |
ba75122d RM |
790 | test -n "$enable_debug_configure" && |
791 | echo "[DEBUG]: $name $implies_file $x try($d) {$try_srcdir}$try" >&2 | |
792 | if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try; | |
793 | then | |
794 | eval "${implies_type}=\"\$${implies_type} \$try\"" | |
795 | found=yes | |
796 | case "$sysnames_add_ons" in | |
797 | *" $d "*) ;; | |
798 | *|'') sysnames_add_ons="$sysnames_add_ons $d" ;; | |
799 | esac | |
800 | fi | |
801 | done | |
802 | if test $found = no; then | |
803 | AC_MSG_WARN($name/$implies_file specifies nonexistent $x) | |
636ccfc8 UD |
804 | fi |
805 | done | |
ba75122d RM |
806 | fi |
807 | done | |
28f540f4 RM |
808 | |
809 | # Add NAME to the list of names. | |
810 | names="$names $name" | |
811 | ||
812 | # Find the parent of NAME, using the empty string if it has none. | |
813 | changequote(,)dnl | |
57ba7bb4 | 814 | parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`" |
28f540f4 RM |
815 | changequote([,])dnl |
816 | ||
ba75122d RM |
817 | test -n "$enable_debug_configure" && |
818 | echo "[DEBUG]: $name Implies='$Implies' rest='$*' parent='$parent' \ | |
57633811 | 819 | Implies_before='$Implies_before' Implies_after='$Implies_after'" >&2 |
ba75122d | 820 | |
28f540f4 RM |
821 | # Add the names implied by NAME, and NAME's parent (if it has one), to |
822 | # the list of names to be processed (the argument list). We prepend the | |
823 | # implied names to the list and append the parent. We want implied | |
824 | # directories to come before further directories inferred from the | |
825 | # configuration components; this ensures that for sysv4, unix/common | |
826 | # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*) | |
827 | # after sysv4). | |
ba75122d | 828 | sysnames="`echo $Implies $* $Implies_before $parent $Implies_after`" |
28f540f4 RM |
829 | test -n "$sysnames" && set $sysnames |
830 | done | |
831 | ||
832 | # Add the default directories. | |
83ef87ba | 833 | default_sysnames="sysdeps/generic" |
ecdc196c | 834 | sysnames="$names $default_sysnames" |
f332db02 RM |
835 | AC_SUBST(sysnames) |
836 | # The other names were emitted during the scan. | |
ecdc196c | 837 | AC_MSG_RESULT($default_sysnames) |
28f540f4 | 838 | |
e0a3ed4f RM |
839 | # Collect the list of add-ons that supply partial sysdeps trees. |
840 | sysdeps_add_ons= | |
841 | for add_on in $add_ons; do | |
842 | case "$add_on" in | |
843 | /*) xsrcdir= ;; | |
844 | *) xsrcdir="$srcdir/" ;; | |
845 | esac | |
846 | ||
847 | test -d "$xsrcdir$add_on/sysdeps" || { | |
848 | case "$configured_add_ons " in | |
849 | *" $add_on "*) ;; | |
850 | *|'') | |
851 | AC_MSG_ERROR(add-on $add_on has no configure fragment or sysdeps tree) | |
852 | ;; | |
853 | esac | |
854 | continue | |
855 | } | |
856 | ||
857 | sysdeps_add_ons="$sysdeps_add_ons $add_on" | |
858 | case "$sysnames_add_ons" in | |
859 | *" $add_on/ "*) ;; | |
860 | *|'') | |
861 | AC_MSG_WARN(add-on $add_on contributed no sysdeps directories) | |
862 | continue ;; | |
863 | esac | |
864 | ||
865 | found=no | |
866 | for d in $sysnames; do | |
867 | case "$d" in | |
868 | $add_on/sysdeps/*) ;; | |
869 | *) continue ;; | |
870 | esac | |
871 | (cd "$xsrcdir$d" && for f in *[[!~]]; do | |
872 | case "$f" in | |
873 | sys|bits) | |
874 | for ff in $f/*.h; do | |
875 | test -d "$ff" || { test -e "$ff" && exit 88; } | |
876 | done | |
877 | ;; | |
878 | *) | |
77e8bddf | 879 | test -d "$f" || { test -e "$f" && exit 88; } |
e0a3ed4f RM |
880 | ;; |
881 | esac | |
882 | done) | |
883 | if test $? -eq 88; then | |
884 | found=yes | |
885 | break | |
886 | fi | |
887 | done | |
888 | if test $found = no; then | |
889 | AC_MSG_WARN(add-on $add_on contributed no useful sysdeps directories) | |
890 | fi | |
891 | done | |
892 | AC_SUBST(sysdeps_add_ons) | |
893 | ||
f332db02 RM |
894 | |
895 | ### Locate tools. | |
28f540f4 | 896 | |
28f540f4 | 897 | AC_PROG_INSTALL |
2b80a372 | 898 | if test "$INSTALL" = "${srcdir}/scripts/install-sh -c"; then |
28f540f4 | 899 | # The makefiles need to use a different form to find it in $srcdir. |
2b80a372 | 900 | INSTALL='\$(..)./scripts/install-sh -c' |
28f540f4 | 901 | fi |
0e3426bb | 902 | AC_PROG_LN_S |
ae828bc6 | 903 | |
4baa087a RM |
904 | LIBC_PROG_BINUTILS |
905 | AC_SUBST(MIG)dnl Needed by sysdeps/mach/configure.in | |
906 | ||
bec039bc | 907 | # Accept binutils 2.20 or newer. |
4baa087a RM |
908 | AC_CHECK_PROG_VER(AS, $AS, --version, |
909 | [GNU assembler.* \([0-9]*\.[0-9.]*\)], | |
bec039bc | 910 | [2.1[0-9][0-9]*|2.[2-9][0-9]*|[3-9].*|[1-9][0-9]*], AS=: critic_missing="$critic_missing as") |
4baa087a RM |
911 | AC_CHECK_PROG_VER(LD, $LD, --version, |
912 | [GNU ld.* \([0-9][0-9]*\.[0-9.]*\)], | |
bec039bc | 913 | [2.1[0-9][0-9]*|2.[2-9][0-9]*|[3-9].*|[1-9][0-9]*], LD=: critic_missing="$critic_missing ld") |
4baa087a | 914 | |
63bda0c1 | 915 | # These programs are version sensitive. |
3a12e572 | 916 | AC_CHECK_TOOL_PREFIX |
4bca4c17 | 917 | AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v, |
0e7727f7 | 918 | [version \([egcygnustpi-]*[0-9.]*\)], [4.[3-9].* | 4.[1-9][0-9].* | [5-9].* ], |
90d1d40b | 919 | critic_missing="$critic_missing gcc") |
22e65f8f | 920 | AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version, |
8fc1e2ca | 921 | [GNU Make[^0-9]*\([0-9][0-9.]*\)], |
6b4e880f | 922 | [3.79* | 3.[89]*], critic_missing="$critic_missing make") |
63bda0c1 | 923 | |
22e65f8f | 924 | AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version, |
bdd421cc | 925 | [GNU gettext.* \([0-9]*\.[0-9.]*\)], |
aefdff34 RM |
926 | [0.10.3[6-9]* | 0.10.[4-9][0-9]* | 0.1[1-9]* | 0.[2-9][0-9]* | [1-9].*], |
927 | MSGFMT=: aux_missing="$aux_missing msgfmt") | |
63bda0c1 | 928 | AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, |
8b7fb588 | 929 | [GNU texinfo.* \([0-9][0-9.]*\)], |
6a3951a0 | 930 | [4.[5-9]*|4.[1-9][0-9]*|[5-9].*], |
aefdff34 | 931 | MAKEINFO=: aux_missing="$aux_missing makeinfo") |
d6a97a28 | 932 | AC_CHECK_PROG_VER(SED, sed, --version, |
aec103d3 | 933 | [GNU sed version \([0-9]*\.[0-9.]*\)], |
aefdff34 RM |
934 | [3.0[2-9]*|3.[1-9]*|[4-9]*], |
935 | SED=: aux_missing="$aux_missing sed") | |
63bda0c1 | 936 | |
d30cf5bb | 937 | AC_CHECK_TOOL(READELF, readelf, false) |
30b99d79 | 938 | AC_CHECK_TOOL(NM, nm, false) |
d30cf5bb | 939 | |
476e7d78 RM |
940 | AC_CHECK_PROGS(AUTOCONF, autoconf, no) |
941 | case "x$AUTOCONF" in | |
942 | xno|x|x:) AUTOCONF=no ;; | |
943 | *) | |
944 | AC_CACHE_CHECK(dnl | |
1400de2e | 945 | whether $AUTOCONF${ACFLAGS:+ }$ACFLAGS works, libc_cv_autoconf_works, [dnl |
476e7d78 RM |
946 | if (cd $srcdir; $AUTOCONF $ACFLAGS configure.in > /dev/null 2>&1); then |
947 | libc_cv_autoconf_works=yes | |
948 | else | |
949 | libc_cv_autoconf_works=no | |
950 | fi]) | |
951 | test $libc_cv_autoconf_works = yes || AUTOCONF=no | |
952 | ;; | |
953 | esac | |
92963737 | 954 | if test "x$AUTOCONF" = xno; then |
476e7d78 | 955 | aux_missing="$aux_missing autoconf" |
14519931 | 956 | fi |
1400de2e | 957 | |
32a448ed RM |
958 | test -n "$critic_missing" && AC_MSG_ERROR([ |
959 | *** These critical programs are missing or too old:$critic_missing | |
960 | *** Check the INSTALL file for required versions.]) | |
961 | ||
4bca4c17 | 962 | test -n "$aux_missing" && AC_MSG_WARN([ |
9c6fffc0 | 963 | *** These auxiliary programs are missing or incompatible versions:$aux_missing |
63bda0c1 UD |
964 | *** some features will be disabled. |
965 | *** Check the INSTALL file for required versions.]) | |
28f540f4 | 966 | |
dbe7a0f5 UD |
967 | # if using special system headers, find out the compiler's sekrit |
968 | # header directory and add that to the list. NOTE: Only does the right | |
969 | # thing on a system that doesn't need fixincludes. (Not presently a problem.) | |
970 | if test -n "$sysheaders"; then | |
67fbfa5c RM |
971 | SYSINCLUDES=-nostdinc |
972 | for d in include include-fixed; do | |
973 | i=`$CC -print-file-name="$d"` && test "x$i" != x && test "x$i" != "x$d" && | |
974 | SYSINCLUDES="$SYSINCLUDES -isystem $i" | |
975 | done | |
976 | SYSINCLUDES="$SYSINCLUDES \ | |
3d6ce23a | 977 | -isystem `echo $sysheaders | sed 's/:/ -isystem /g'`" |
ef226fec | 978 | if test -n "$CXX"; then |
7872cfb0 | 979 | CXX_SYSINCLUDES= |
ef226fec RM |
980 | cxxversion=`$CXX -dumpversion 2>&AS_MESSAGE_LOG_FD` && |
981 | cxxmachine=`$CXX -dumpmachine 2>&AS_MESSAGE_LOG_FD` && | |
7872cfb0 AS |
982 | for d in include "$cxxmachine/include"; do |
983 | i=../../../../$d/c++/$cxxversion | |
984 | cxxheaders=`$CXX -print-file-name="$i"` && | |
985 | test "x$cxxheaders" != x && test "x$i" != "x$cxxheaders" && | |
986 | CXX_SYSINCLUDES="$CXX_SYSINCLUDES -isystem $cxxheaders \ | |
ef226fec | 987 | -isystem $cxxheaders/$cxxmachine -isystem $cxxheaders/backward" |
7872cfb0 | 988 | done |
ef226fec | 989 | fi |
dbe7a0f5 UD |
990 | fi |
991 | AC_SUBST(SYSINCLUDES) | |
ef226fec | 992 | AC_SUBST(CXX_SYSINCLUDES) |
dbe7a0f5 | 993 | |
3911660e UD |
994 | # Test if LD_LIBRARY_PATH contains the notation for the current directory |
995 | # since this would lead to problems installing/building glibc. | |
996 | # LD_LIBRARY_PATH contains the current directory if one of the following | |
997 | # is true: | |
998 | # - one of the terminals (":" and ";") is the first or last sign | |
999 | # - two terminals occur directly after each other | |
1000 | # - the path contains an element with a dot in it | |
1001 | AC_MSG_CHECKING(LD_LIBRARY_PATH variable) | |
1002 | changequote(,)dnl | |
1003 | case ${LD_LIBRARY_PATH} in | |
1004 | [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) | |
b3a86ae1 | 1005 | ld_library_path_setting="contains current directory" |
3911660e UD |
1006 | ;; |
1007 | *) | |
1008 | ld_library_path_setting="ok" | |
1009 | ;; | |
1010 | esac | |
1011 | changequote([,])dnl | |
1012 | AC_MSG_RESULT($ld_library_path_setting) | |
1013 | if test "$ld_library_path_setting" != "ok"; then | |
63bda0c1 UD |
1014 | AC_MSG_ERROR([ |
1015 | *** LD_LIBRARY_PATH shouldn't contain the current directory when | |
1016 | *** building glibc. Please change the environment variable | |
1017 | *** and run configure again.]) | |
3911660e | 1018 | fi |
8e31cf7e | 1019 | |
74bd2300 UD |
1020 | AC_CACHE_CHECK(whether GCC supports -static-libgcc, libc_cv_gcc_static_libgcc, [dnl |
1021 | if $CC -v -static-libgcc 2>&1 | grep -q 'unrecognized option.*static-libgcc'; then | |
1022 | libc_cv_gcc_static_libgcc= | |
1023 | else | |
1024 | libc_cv_gcc_static_libgcc=-static-libgcc | |
1025 | fi]) | |
1026 | AC_SUBST(libc_cv_gcc_static_libgcc) | |
1027 | ||
26f56c1c UD |
1028 | AC_PATH_PROG(BASH_SHELL, bash, no) |
1029 | if test "$BASH_SHELL" != no && | |
1030 | $BASH_SHELL -c 'test "$BASH_VERSINFO" \ | |
6973fc01 | 1031 | && test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then |
84384f5b UD |
1032 | libc_cv_have_bash2=yes |
1033 | else | |
1034 | libc_cv_have_bash2=no | |
1035 | fi | |
1036 | AC_SUBST(libc_cv_have_bash2) | |
1037 | ||
5290baf0 | 1038 | dnl We need a ksh compatible shell for tzselect. |
26f56c1c | 1039 | if test "$BASH_SHELL" = no; then |
5290baf0 UD |
1040 | AC_PATH_PROG(KSH, ksh, no) |
1041 | if test "$KSH" = no; then | |
1042 | libc_cv_have_ksh=no | |
1043 | else | |
1044 | libc_cv_have_ksh=yes | |
1045 | fi | |
1046 | else | |
26f56c1c | 1047 | KSH="$BASH_SHELL" |
5290baf0 UD |
1048 | AC_SUBST(KSH) |
1049 | libc_cv_have_ksh=yes | |
1050 | fi | |
1051 | AC_SUBST(libc_cv_have_ksh) | |
1052 | ||
5aa8ff62 | 1053 | AC_PROG_AWK |
c0016081 | 1054 | AC_PATH_PROG(PERL, perl, no) |
2fd5d029 RM |
1055 | if test "$PERL" != no && |
1056 | (eval `$PERL -V:apiversion`; test `expr "$apiversion" \< 5` -ne 0); then | |
1057 | PERL=no | |
ecb06196 | 1058 | fi |
2f512715 AS |
1059 | AC_PATH_PROG(INSTALL_INFO, install-info, no, |
1060 | $PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin) | |
2de00372 UD |
1061 | AC_PATH_PROG(BISON, bison, no, $PATH:/usr/local/bin:/usr/bin:/bin) |
1062 | ||
b8dc6a10 | 1063 | AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl |
28f540f4 RM |
1064 | AC_TRY_COMPILE(dnl |
1065 | [#define __need_size_t | |
1066 | #define __need_wchar_t | |
1067 | #include <stddef.h> | |
1068 | #define __need_NULL | |
1069 | #include <stddef.h>], [size_t size; wchar_t wchar; | |
1070 | #ifdef offsetof | |
1071 | #error stddef.h ignored __need_* | |
1072 | #endif | |
1073 | if (&size == NULL || &wchar == NULL) abort ();], | |
77e8bddf AS |
1074 | libc_cv_friendly_stddef=yes, |
1075 | libc_cv_friendly_stddef=no)]) | |
28f540f4 RM |
1076 | if test $libc_cv_friendly_stddef = yes; then |
1077 | config_vars="$config_vars | |
1078 | override stddef.h = # The installed <stddef.h> seems to be libc-friendly." | |
1079 | fi | |
1080 | ||
b8dc6a10 RM |
1081 | AC_CACHE_CHECK(whether we need to use -P to assemble .S files, |
1082 | libc_cv_need_minus_P, [dnl | |
28f540f4 RM |
1083 | cat > conftest.S <<EOF |
1084 | #include "confdefs.h" | |
1085 | /* Nothing whatsoever. */ | |
1086 | EOF | |
3217788f | 1087 | if AC_TRY_COMMAND(${CC-cc} $CPPFLAGS $ASFLAGS -c conftest.S 1>&AS_MESSAGE_LOG_FD); then |
28f540f4 RM |
1088 | libc_cv_need_minus_P=no |
1089 | else | |
1090 | libc_cv_need_minus_P=yes | |
1091 | fi | |
1092 | rm -f conftest*]) | |
28f540f4 RM |
1093 | if test $libc_cv_need_minus_P = yes; then |
1094 | config_vars="$config_vars | |
1095 | asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives." | |
1096 | fi | |
1097 | ||
b8dc6a10 | 1098 | AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl |
9a70fcab | 1099 | cat > conftest.s <<EOF |
2293395f | 1100 | ${libc_cv_dot_text} |
ae1025be | 1101 | foo: |
df2a0c93 | 1102 | .set glibc_conftest_frobozz,foo |
7b8e0d49 | 1103 | .globl glibc_conftest_frobozz |
e215c478 | 1104 | EOF |
df2a0c93 RM |
1105 | # The alpha-dec-osf1 assembler gives only a warning for `.set' |
1106 | # (but it doesn't work), so we must do a linking check to be sure. | |
1107 | cat > conftest1.c <<\EOF | |
1108 | extern int glibc_conftest_frobozz; | |
640f0119 | 1109 | void _start() { glibc_conftest_frobozz = 1; } |
df2a0c93 RM |
1110 | EOF |
1111 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
640f0119 | 1112 | -nostartfiles -nostdlib \ |
0b4ee387 | 1113 | -o conftest conftest.s conftest1.c 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
e215c478 RM |
1114 | libc_cv_asm_set_directive=yes |
1115 | else | |
1116 | libc_cv_asm_set_directive=no | |
1117 | fi | |
65b3cbcb | 1118 | rm -f conftest*]) |
e215c478 RM |
1119 | if test $libc_cv_asm_set_directive = yes; then |
1120 | AC_DEFINE(HAVE_ASM_SET_DIRECTIVE) | |
1121 | fi | |
1122 | ||
415ac3df UD |
1123 | AC_CACHE_CHECK(for assembler gnu_unique_object symbol type, |
1124 | libc_cv_asm_unique_object, [dnl | |
1125 | cat > conftest.s <<EOF | |
1126 | ${libc_cv_dot_text} | |
1127 | _sym: | |
1128 | .type _sym, ${libc_cv_asm_type_prefix}gnu_unique_object | |
1129 | EOF | |
1130 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then | |
1131 | libc_cv_asm_unique_object=yes | |
1132 | else | |
1133 | libc_cv_asm_unique_object=no | |
1134 | fi | |
1135 | rm -f conftest*]) | |
1136 | if test $libc_cv_asm_unique_object = yes; then | |
1137 | AC_DEFINE(HAVE_ASM_UNIQUE_OBJECT) | |
1138 | fi | |
1139 | ||
377a515b UD |
1140 | AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive, |
1141 | [cat > conftest.s <<EOF | |
2293395f | 1142 | ${libc_cv_dot_text} |
4cca6b86 | 1143 | _sym: |
377a515b UD |
1144 | .symver _sym,sym@VERS |
1145 | EOF | |
3217788f | 1146 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
377a515b UD |
1147 | libc_cv_asm_symver_directive=yes |
1148 | else | |
1149 | libc_cv_asm_symver_directive=no | |
1150 | fi | |
1151 | rm -f conftest*]) | |
1152 | AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl | |
1153 | if test $libc_cv_asm_symver_directive = yes; then | |
1154 | cat > conftest.s <<EOF | |
2293395f | 1155 | ${libc_cv_dot_text} |
4cca6b86 | 1156 | _sym: |
377a515b UD |
1157 | .symver _sym,sym@VERS |
1158 | EOF | |
1159 | cat > conftest.map <<EOF | |
f43ce637 | 1160 | VERS_1 { |
377a515b UD |
1161 | global: sym; |
1162 | }; | |
f43ce637 UD |
1163 | |
1164 | VERS_2 { | |
77e8bddf | 1165 | global: sym; |
f43ce637 | 1166 | } VERS_1; |
377a515b | 1167 | EOF |
3217788f RM |
1168 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
1169 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $LDFLAGS -shared | |
1170 | -o conftest.so conftest.o | |
1171 | -nostartfiles -nostdlib | |
1172 | -Wl,--version-script,conftest.map | |
c2f55635 | 1173 | 1>&AS_MESSAGE_LOG_FD]); |
377a515b UD |
1174 | then |
1175 | libc_cv_ld_version_script_option=yes | |
1176 | else | |
1177 | libc_cv_ld_version_script_option=no | |
1178 | fi | |
1179 | else | |
1180 | libc_cv_ld_version_script_option=no | |
1181 | fi | |
1182 | else | |
1183 | libc_cv_ld_version_script_option=no | |
1184 | fi | |
1185 | rm -f conftest*]) | |
7499a22a RM |
1186 | if test $shared != no && |
1187 | test $libc_cv_asm_symver_directive = yes && | |
650425ce UD |
1188 | test $libc_cv_ld_version_script_option = yes && |
1189 | test $enable_versioning = yes; then | |
377a515b UD |
1190 | VERSIONING=yes |
1191 | AC_DEFINE(DO_VERSIONING) | |
1192 | else | |
1193 | VERSIONING=no | |
1194 | fi | |
1195 | AC_SUBST(VERSIONING) | |
1196 | ||
a0da5fe1 | 1197 | if test $shared != no && test $VERSIONING = no; then |
f43ce637 | 1198 | echo "\ |
f4017d20 | 1199 | *** WARNING: You should not compile GNU libc without versioning. Not using |
f43ce637 UD |
1200 | *** versioning will introduce incompatibilities so that old binaries |
1201 | *** will not run anymore. | |
50304ef0 | 1202 | *** For versioning you need recent binutils (binutils-2.8.1.0.23 or newer)." |
f43ce637 | 1203 | fi |
a0da5fe1 UD |
1204 | AC_CACHE_CHECK(for .previous assembler directive, |
1205 | libc_cv_asm_previous_directive, [dnl | |
1206 | cat > conftest.s <<EOF | |
fd26970f UD |
1207 | .section foo_section |
1208 | .previous | |
a0da5fe1 UD |
1209 | EOF |
1210 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
1211 | libc_cv_asm_previous_directive=yes | |
1212 | else | |
1213 | libc_cv_asm_previous_directive=no | |
1214 | fi | |
1215 | rm -f conftest*]) | |
1216 | if test $libc_cv_asm_previous_directive = yes; then | |
1217 | AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE) | |
1218 | else | |
1219 | AC_CACHE_CHECK(for .popsection assembler directive, | |
1220 | libc_cv_asm_popsection_directive, [dnl | |
1221 | cat > conftest.s <<EOF | |
1222 | .pushsection foo_section | |
1223 | .popsection | |
fd26970f | 1224 | EOF |
3217788f | 1225 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then |
a0da5fe1 | 1226 | libc_cv_asm_popsection_directive=yes |
fd26970f | 1227 | else |
a0da5fe1 | 1228 | libc_cv_asm_popsection_directive=no |
fd26970f UD |
1229 | fi |
1230 | rm -f conftest*]) | |
a0da5fe1 UD |
1231 | if test $libc_cv_asm_popsection_directive = yes; then |
1232 | AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE) | |
fd26970f | 1233 | fi |
a0da5fe1 UD |
1234 | fi |
1235 | AC_CACHE_CHECK(for .protected and .hidden assembler directive, | |
1236 | libc_cv_asm_protected_directive, [dnl | |
1237 | cat > conftest.s <<EOF | |
2d499f55 UD |
1238 | .protected foo |
1239 | foo: | |
1240 | .hidden bar | |
1241 | bar: | |
1242 | EOF | |
a0da5fe1 UD |
1243 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then |
1244 | libc_cv_asm_protected_directive=yes | |
1245 | else | |
1246 | AC_MSG_ERROR(assembler support for symbol visibility is required) | |
1247 | fi | |
1248 | rm -f conftest*]) | |
0fb7851f | 1249 | |
a0da5fe1 UD |
1250 | if test $libc_cv_asm_protected_directive = yes; then |
1251 | AC_CACHE_CHECK(whether __attribute__((visibility())) is supported, | |
0d01dace UD |
1252 | libc_cv_visibility_attribute, |
1253 | [cat > conftest.c <<EOF | |
1254 | int foo __attribute__ ((visibility ("hidden"))) = 1; | |
1255 | int bar __attribute__ ((visibility ("protected"))) = 1; | |
1256 | EOF | |
1257 | libc_cv_visibility_attribute=no | |
61cea1c3 | 1258 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then |
0d01dace UD |
1259 | if grep '\.hidden.*foo' conftest.s >/dev/null; then |
1260 | if grep '\.protected.*bar' conftest.s >/dev/null; then | |
1261 | libc_cv_visibility_attribute=yes | |
1262 | fi | |
1263 | fi | |
1264 | fi | |
f7d82dc9 | 1265 | rm -f conftest.{c,s} |
0d01dace | 1266 | ]) |
a0da5fe1 UD |
1267 | if test $libc_cv_visibility_attribute != yes; then |
1268 | AC_MSG_ERROR(compiler support for visibility attribute is required) | |
0d01dace | 1269 | fi |
a0da5fe1 | 1270 | fi |
0d01dace | 1271 | |
a0da5fe1 UD |
1272 | if test $libc_cv_visibility_attribute = yes; then |
1273 | AC_CACHE_CHECK(for broken __attribute__((visibility())), | |
37ba7d66 UD |
1274 | libc_cv_broken_visibility_attribute, |
1275 | [cat > conftest.c <<EOF | |
1276 | int foo (int x); | |
1277 | int bar (int x) __asm__ ("foo") __attribute__ ((visibility ("hidden"))); | |
1278 | int bar (int x) { return x; } | |
1279 | EOF | |
1280 | libc_cv_broken_visibility_attribute=yes | |
f7d82dc9 | 1281 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then |
37ba7d66 UD |
1282 | changequote(,)dnl |
1283 | if grep '\.hidden[ _]foo' conftest.s >/dev/null; then | |
1284 | changequote([,])dnl | |
1285 | libc_cv_broken_visibility_attribute=no | |
1286 | fi | |
1287 | fi | |
1288 | rm -f conftest.c conftest.s | |
1289 | ]) | |
a0da5fe1 UD |
1290 | if test $libc_cv_broken_visibility_attribute = yes; then |
1291 | AC_MSG_ERROR(working compiler support for visibility attribute is required) | |
37ba7d66 | 1292 | fi |
a0da5fe1 | 1293 | fi |
37ba7d66 | 1294 | |
a0da5fe1 UD |
1295 | AC_CACHE_CHECK(for broken __attribute__((alias())), |
1296 | libc_cv_broken_alias_attribute, | |
1297 | [cat > conftest.c <<EOF | |
1298 | extern int foo (int x) __asm ("xyzzy"); | |
1299 | int bar (int x) { return x; } | |
1300 | extern __typeof (bar) foo __attribute ((weak, alias ("bar"))); | |
1301 | extern int dfoo; | |
1302 | extern __typeof (dfoo) dfoo __asm ("abccb"); | |
1303 | int dfoo = 1; | |
37ba7d66 | 1304 | EOF |
a0da5fe1 UD |
1305 | libc_cv_broken_alias_attribute=yes |
1306 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
1307 | if grep 'xyzzy' conftest.s >/dev/null && | |
1308 | grep 'abccb' conftest.s >/dev/null; then | |
1309 | libc_cv_broken_alias_attribute=no | |
1310 | fi | |
1311 | fi | |
1312 | rm -f conftest.c conftest.s | |
1313 | ]) | |
1314 | if test $libc_cv_broken_alias_attribute = yes; then | |
1315 | AC_MSG_ERROR(working alias attribute support required) | |
1316 | fi | |
1317 | ||
1318 | if test $libc_cv_visibility_attribute = yes; then | |
1319 | AC_CACHE_CHECK(whether to put _rtld_local into .sdata section, | |
0d01dace UD |
1320 | libc_cv_have_sdata_section, |
1321 | [echo "int i;" > conftest.c | |
1322 | libc_cv_have_sdata_section=no | |
dbc92dc6 | 1323 | if ${CC-cc} $LDFLAGS -fPIC -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \ |
0d01dace UD |
1324 | | grep '\.sdata' >/dev/null; then |
1325 | libc_cv_have_sdata_section=yes | |
1326 | fi | |
1327 | rm -f conftest.c conftest.so | |
1328 | ]) | |
a0da5fe1 UD |
1329 | if test $libc_cv_have_sdata_section = yes; then |
1330 | AC_DEFINE(HAVE_SDATA_SECTION) | |
0d01dace | 1331 | fi |
a0da5fe1 | 1332 | fi |
0d01dace | 1333 | |
a0da5fe1 UD |
1334 | AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support, |
1335 | libc_cv_initfini_array, [dnl | |
07037eeb | 1336 | LIBC_TRY_LINK_STATIC([ |
5241882c | 1337 | int foo (void) { return 1; } |
2c617417 | 1338 | int (*fp) (void) __attribute__ ((section (".init_array"))) = foo; |
07037eeb JM |
1339 | ], |
1340 | [if $READELF -S conftest | fgrep INIT_ARRAY > /dev/null; then | |
a0da5fe1 | 1341 | libc_cv_initfini_array=yes |
5241882c | 1342 | else |
ce33ee7c | 1343 | libc_cv_initfini_array=no |
07037eeb JM |
1344 | fi], |
1345 | [libc_cv_initfini_array=no]) | |
1346 | ]) | |
a0da5fe1 UD |
1347 | if test $libc_cv_initfini_array != yes; then |
1348 | AC_MSG_ERROR([Need linker with .init_array/.fini_array support.]) | |
1349 | fi | |
62bede13 | 1350 | |
a0da5fe1 UD |
1351 | AC_CACHE_CHECK(whether to use .ctors/.dtors header and trailer, |
1352 | libc_cv_ctors_header, [dnl | |
1353 | libc_cv_ctors_header=yes | |
07037eeb JM |
1354 | LIBC_TRY_LINK_STATIC([ |
1355 | __attribute__ ((constructor)) void ctor (void) { asm (""); } | |
1356 | __attribute__ ((destructor)) void dtor (void) { asm (""); } | |
113ddea4 | 1357 | ], |
a0da5fe1 | 1358 | [dnl |
113ddea4 | 1359 | AS_IF([$READELF -WS conftest$ac_exeext | $AWK ' |
92963737 | 1360 | { gsub(/\@<:@ */, "@<:@") } |
113ddea4 RM |
1361 | $2 == ".ctors" || $2 == ".dtors" { |
1362 | size = strtonum("0x" $6) | |
1363 | align = strtonum("0x" $NF) | |
1364 | seen@<:@$2@:>@ = 1 | |
1365 | stub@<:@$2@:>@ = size == align * 2 | |
92963737 | 1366 | } |
113ddea4 RM |
1367 | END { |
1368 | ctors_ok = !seen@<:@".ctors"@:>@ || stub@<:@".ctors"@:>@ | |
1369 | dtors_ok = !seen@<:@".dtors"@:>@ || stub@<:@".dtors"@:>@ | |
1370 | exit ((ctors_ok && dtors_ok) ? 0 : 1) | |
1371 | } | |
1372 | '], [libc_cv_ctors_header=no]) | |
1373 | ], [dnl | |
1374 | AC_MSG_ERROR([missing __attribute__ ((constructor)) support??]) | |
1375 | ]) | |
a0da5fe1 UD |
1376 | ]) |
1377 | if test $libc_cv_ctors_header = no; then | |
1378 | AC_DEFINE(NO_CTORS_DTORS_SECTIONS) | |
1379 | fi | |
5241882c | 1380 | |
a0da5fe1 UD |
1381 | AC_CACHE_CHECK(for libunwind-support in compiler, |
1382 | libc_cv_cc_with_libunwind, [ | |
1383 | cat > conftest.c <<EOF | |
cbdb12de UD |
1384 | int main (void) { return 0; } |
1385 | EOF | |
a0da5fe1 UD |
1386 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -static -o conftest \ |
1387 | conftest.c -v 2>&1 >/dev/null | grep -q " -lunwind "; then | |
1388 | libc_cv_cc_with_libunwind=yes | |
1389 | else | |
1390 | libc_cv_cc_with_libunwind=no | |
c776b3d7 | 1391 | fi |
a0da5fe1 UD |
1392 | rm -f conftest*]) |
1393 | AC_SUBST(libc_cv_cc_with_libunwind) | |
1394 | if test $libc_cv_cc_with_libunwind = yes; then | |
1395 | AC_DEFINE(HAVE_CC_WITH_LIBUNWIND) | |
1396 | fi | |
c776b3d7 | 1397 | |
a0da5fe1 UD |
1398 | AC_CACHE_CHECK(for -z nodelete option, |
1399 | libc_cv_z_nodelete, [dnl | |
1400 | cat > conftest.c <<EOF | |
0fb7851f UD |
1401 | int _start (void) { return 42; } |
1402 | EOF | |
a0da5fe1 UD |
1403 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
1404 | -fPIC -shared -o conftest.so conftest.c | |
1405 | -nostartfiles -nostdlib | |
1406 | -Wl,--enable-new-dtags,-z,nodelete 1>&AS_MESSAGE_LOG_FD]) | |
1407 | then | |
1408 | libc_cv_z_nodelete=yes | |
1409 | else | |
1410 | AC_MSG_ERROR(linker with -z nodelete support required) | |
1411 | fi | |
1412 | rm -f conftest*]) | |
2f54c82d | 1413 | |
a0da5fe1 UD |
1414 | AC_CACHE_CHECK(for -z nodlopen option, |
1415 | libc_cv_z_nodlopen, [dnl | |
1416 | cat > conftest.c <<EOF | |
2f54c82d UD |
1417 | int _start (void) { return 42; } |
1418 | EOF | |
a0da5fe1 | 1419 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dbc92dc6 | 1420 | -fPIC -shared -o conftest.so conftest.c |
35cd3c97 | 1421 | -nostartfiles -nostdlib |
c2f55635 | 1422 | -Wl,--enable-new-dtags,-z,nodlopen 1>&AS_MESSAGE_LOG_FD]) |
a0da5fe1 UD |
1423 | then |
1424 | libc_cv_z_nodlopen=yes | |
1425 | else | |
1426 | AC_MSG_ERROR(linker with -z nodlopen support required) | |
1427 | fi | |
1428 | rm -f conftest*]) | |
5d916713 | 1429 | |
a0da5fe1 UD |
1430 | AC_CACHE_CHECK(for -z initfirst option, |
1431 | libc_cv_z_initfirst, [dnl | |
1432 | cat > conftest.c <<EOF | |
5d916713 UD |
1433 | int _start (void) { return 42; } |
1434 | EOF | |
a0da5fe1 | 1435 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dbc92dc6 | 1436 | -fPIC -shared -o conftest.so conftest.c |
35cd3c97 | 1437 | -nostartfiles -nostdlib |
c2f55635 | 1438 | -Wl,--enable-new-dtags,-z,initfirst 1>&AS_MESSAGE_LOG_FD]) |
a0da5fe1 UD |
1439 | then |
1440 | libc_cv_z_initfirst=yes | |
1441 | else | |
1442 | AC_MSG_ERROR(linker with -z initfirst support required) | |
1443 | fi | |
1444 | rm -f conftest*]) | |
639c3248 | 1445 | |
a0da5fe1 UD |
1446 | # Add-on fragments can set these for other machines. |
1447 | libc_commonpagesize=${libc_commonpagesize:-no} | |
1448 | libc_relro_required=${libc_relro_required:-no} | |
1449 | case "$base_machine" in | |
1450 | i[[34567]]86 | x86_64 | powerpc* | s390*) | |
1451 | libc_commonpagesize=0x1000 | |
1452 | libc_relro_required=yes | |
1453 | ;; | |
1454 | sparc*) | |
1455 | libc_commonpagesize=0x2000 | |
1456 | libc_relro_required=yes | |
1457 | ;; | |
a0da5fe1 | 1458 | esac |
574920b4 | 1459 | |
a0da5fe1 UD |
1460 | if test $libc_commonpagesize != no; then |
1461 | AC_CACHE_CHECK(for -z relro option, | |
1462 | libc_cv_z_relro, [dnl | |
1463 | libc_cv_z_relro=no | |
1464 | AC_LANG_CONFTEST([AC_LANG_SOURCE([[ | |
574920b4 RM |
1465 | int _start (void) { return 42; } |
1466 | extern void _exit (int); | |
9fa2c032 RM |
1467 | /* Since these pointers are const, they should go in rodata. |
1468 | Since they refer to functions that have to be resolved by | |
1469 | dynamic linking, they should instead go in RELRO data. */ | |
defe9061 | 1470 | const void *const relro[] = { &_start, &_exit, 0 }; |
9fa2c032 RM |
1471 | /* GNU ld fails to produce RELRO data when it's very small and there is no |
1472 | normal writable data following it, or if only uninitialized (.bss) data | |
1473 | follows it, or only very small writable data. */ | |
1474 | int data[0x10000] = { 1, }; | |
574920b4 | 1475 | ]])]) |
a0da5fe1 | 1476 | cat > conftest.awk <<\EOF |
574920b4 RM |
1477 | BEGIN { |
1478 | result = "no" | |
1479 | commonpagesize = strtonum(commonpagesize) | |
1480 | } | |
1481 | { print "LINE:", $0 > "/dev/stderr" } | |
1482 | $1 == "GNU_RELRO" { | |
1483 | vaddr = strtonum($3) | |
1484 | memsz = strtonum($6) | |
1485 | end = vaddr + memsz | |
1486 | printf "vaddr %#x memsz %#x end %#x commonpagesize %#x\n", \ | |
1487 | vaddr, memsz, end, commonpagesize > "/dev/stderr" | |
1488 | result = (end % commonpagesize == 0) ? "yes" : "broken" | |
1489 | } | |
1490 | END { print result } | |
1491 | EOF | |
a0da5fe1 | 1492 | AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
574920b4 RM |
1493 | -fPIC -shared -o conftest.so conftest.c |
1494 | -nostartfiles -nostdlib | |
1495 | -Wl,-z,relro 1>&AS_MESSAGE_LOG_FD]) && | |
a0da5fe1 UD |
1496 | AC_TRY_COMMAND([$READELF -Wl conftest.so > conftest.ph]) && |
1497 | AC_TRY_COMMAND([ | |
574920b4 RM |
1498 | $AWK -v commonpagesize=$libc_commonpagesize -f conftest.awk |
1499 | conftest.ph > conftest.cps | |
1500 | ]) && | |
a0da5fe1 UD |
1501 | libc_cv_z_relro=`cat conftest.cps 2>&AS_MESSAGE_LOG_FD` |
1502 | rm -f conftest*]) | |
1503 | if { test "x$libc_relro_required" = xyes && | |
1504 | test "x$libc_cv_z_relro" != xyes | |
1505 | } | |
1506 | then | |
1507 | AC_MSG_ERROR(linker with -z relro support required) | |
574920b4 | 1508 | fi |
a0da5fe1 UD |
1509 | else |
1510 | AC_MSG_WARN([missing architecture parameter to check for working -z relro]) | |
1511 | fi | |
ed20b3d9 | 1512 | |
a0da5fe1 UD |
1513 | AC_CACHE_CHECK(for -Bgroup option, |
1514 | libc_cv_Bgroup, [dnl | |
1515 | cat > conftest.c <<EOF | |
639c3248 UD |
1516 | int _start (void) { return 42; } |
1517 | EOF | |
a0da5fe1 UD |
1518 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
1519 | -fPIC -shared -o conftest.so conftest.c | |
1520 | -Wl,-Bgroup -nostdlib 1>&AS_MESSAGE_LOG_FD]) | |
1521 | then | |
1522 | libc_cv_Bgroup=yes | |
1523 | else | |
1524 | libc_cv_Bgroup=no | |
1525 | fi | |
1526 | rm -f conftest*]) | |
1527 | AC_SUBST(libc_cv_Bgroup) | |
a711b01d | 1528 | |
a0da5fe1 UD |
1529 | ASFLAGS_config= |
1530 | AC_CACHE_CHECK(whether --noexecstack is desirable for .S files, | |
1531 | libc_cv_as_noexecstack, [dnl | |
1532 | cat > conftest.c <<EOF | |
35915ec8 UD |
1533 | void foo (void) { } |
1534 | EOF | |
a0da5fe1 UD |
1535 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS |
1536 | -S -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD]) \ | |
1537 | && grep -q .note.GNU-stack conftest.s \ | |
1538 | && AC_TRY_COMMAND([${CC-cc} $ASFLAGS -Wa,--noexecstack | |
1539 | -c -o conftest.o conftest.s 1>&AS_MESSAGE_LOG_FD]) | |
1540 | then | |
1541 | libc_cv_as_noexecstack=yes | |
1542 | else | |
1543 | libc_cv_as_noexecstack=no | |
1544 | fi | |
1545 | rm -f conftest*]) | |
1546 | if test $libc_cv_as_noexecstack = yes; then | |
1547 | ASFLAGS_config="$ASFLAGS_config -Wa,--noexecstack" | |
1548 | fi | |
1549 | AC_SUBST(ASFLAGS_config) | |
2abf9ff1 | 1550 | |
a0da5fe1 UD |
1551 | AC_CACHE_CHECK(for -z combreloc, |
1552 | libc_cv_z_combreloc, [dnl | |
1553 | cat > conftest.c <<EOF | |
d555194c UD |
1554 | extern int bar (int); |
1555 | extern int mumble; | |
1556 | int foo (void) { return bar (mumble); } | |
a711b01d | 1557 | EOF |
a0da5fe1 | 1558 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dbc92dc6 | 1559 | -fPIC -shared -o conftest.so conftest.c |
35cd3c97 | 1560 | -nostdlib -nostartfiles |
c2f55635 | 1561 | -Wl,-z,combreloc 1>&AS_MESSAGE_LOG_FD]) |
a0da5fe1 | 1562 | then |
a711b01d UD |
1563 | dnl The following test is a bit weak. We must use a tool which can test |
1564 | dnl cross-platform since the gcc used can be a cross compiler. Without | |
1565 | dnl introducing new options this is not easily doable. Instead use a tool | |
1566 | dnl which always is cross-platform: readelf. To detect whether -z combreloc | |
1567 | dnl look for a section named .rel.dyn. | |
a0da5fe1 UD |
1568 | if $READELF -S conftest.so | grep '\.rel\(a\|\)\.dyn' > /dev/null; then |
1569 | libc_cv_z_combreloc=yes | |
fdde8349 UD |
1570 | else |
1571 | libc_cv_z_combreloc=no | |
a711b01d | 1572 | fi |
a0da5fe1 UD |
1573 | else |
1574 | libc_cv_z_combreloc=no | |
1575 | fi | |
1576 | rm -f conftest*]) | |
1577 | if test "$libc_cv_z_combreloc" = yes; then | |
1578 | AC_DEFINE(HAVE_Z_COMBRELOC) | |
1579 | fi | |
1580 | AC_SUBST(libc_cv_z_combreloc) | |
2abf9ff1 | 1581 | |
a0da5fe1 UD |
1582 | AC_CACHE_CHECK(for -z execstack, |
1583 | libc_cv_z_execstack, [dnl | |
1584 | cat > conftest.c <<EOF | |
2abf9ff1 RM |
1585 | int _start (void) { return 42; } |
1586 | EOF | |
a0da5fe1 UD |
1587 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
1588 | -fPIC -shared -o conftest.so conftest.c | |
1589 | -Wl,-z,execstack -nostdlib | |
1590 | 1>&AS_MESSAGE_LOG_FD]) | |
1591 | then | |
1592 | libc_cv_z_execstack=yes | |
1593 | else | |
1594 | libc_cv_z_execstack=no | |
1595 | fi | |
1596 | rm -f conftest*]) | |
1597 | AC_SUBST(libc_cv_z_execstack) | |
c9c60884 | 1598 | |
a0da5fe1 | 1599 | AC_CACHE_CHECK(for -fpie, libc_cv_fpie, [dnl |
4da0431d JM |
1600 | LIBC_TRY_CC_OPTION([-fpie], [libc_cv_fpie=yes], [libc_cv_fpie=no]) |
1601 | ]) | |
c9c60884 | 1602 | |
a0da5fe1 | 1603 | AC_SUBST(libc_cv_fpie) |
871b9158 | 1604 | |
a0da5fe1 UD |
1605 | AC_CACHE_CHECK(for --hash-style option, |
1606 | libc_cv_hashstyle, [dnl | |
1607 | cat > conftest.c <<EOF | |
871b9158 UD |
1608 | int _start (void) { return 42; } |
1609 | EOF | |
a0da5fe1 UD |
1610 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
1611 | -fPIC -shared -o conftest.so conftest.c | |
1612 | -Wl,--hash-style=both -nostdlib 1>&AS_MESSAGE_LOG_FD]) | |
1613 | then | |
1614 | libc_cv_hashstyle=yes | |
1615 | else | |
1616 | libc_cv_hashstyle=no | |
1617 | fi | |
1618 | rm -f conftest*]) | |
1619 | AC_SUBST(libc_cv_hashstyle) | |
1620 | ||
1621 | # The linker's default -shared behavior is good enough if it | |
1622 | # does these things that our custom linker scripts ensure that | |
1623 | # all allocated NOTE sections come first. | |
1624 | if test "$use_default_link" = default; then | |
1625 | AC_CACHE_CHECK([for sufficient default -shared layout], | |
1626 | libc_cv_use_default_link, [dnl | |
1627 | libc_cv_use_default_link=no | |
1628 | cat > conftest.s <<\EOF | |
fd5e21c7 RM |
1629 | .section .note.a,"a",%note |
1630 | .balign 4 | |
1631 | .long 4,4,9 | |
1632 | .string "GNU" | |
1633 | .string "foo" | |
1634 | .section .note.b,"a",%note | |
1635 | .balign 4 | |
1636 | .long 4,4,9 | |
1637 | .string "GNU" | |
1638 | .string "bar" | |
1639 | EOF | |
a0da5fe1 | 1640 | if AC_TRY_COMMAND([dnl |
fd5e21c7 RM |
1641 | ${CC-cc} $ASFLAGS -shared -o conftest.so conftest.s 1>&AS_MESSAGE_LOG_FD]) && |
1642 | ac_try=`$READELF -S conftest.so | sed -n \ | |
1643 | ['${x;p;} | |
1644 | s/^ *\[ *[1-9][0-9]*\] *\([^ ][^ ]*\) *\([^ ][^ ]*\) .*$/\2 \1/ | |
1645 | t a | |
1646 | b | |
1647 | : a | |
1648 | H']` | |
a0da5fe1 UD |
1649 | then |
1650 | libc_seen_a=no libc_seen_b=no | |
1651 | set -- $ac_try | |
1652 | while test $# -ge 2 -a "$1" = NOTE; do | |
1653 | case "$2" in | |
1654 | .note.a) libc_seen_a=yes ;; | |
1655 | .note.b) libc_seen_b=yes ;; | |
1656 | esac | |
1657 | shift 2 | |
1658 | done | |
1659 | case "$libc_seen_a$libc_seen_b" in | |
1660 | yesyes) | |
1661 | libc_cv_use_default_link=yes | |
1662 | ;; | |
1663 | *) | |
1664 | echo >&AS_MESSAGE_LOG_FD "\ | |
fd5e21c7 RM |
1665 | $libc_seen_a$libc_seen_b from: |
1666 | $ac_try" | |
a0da5fe1 UD |
1667 | ;; |
1668 | esac | |
fd5e21c7 | 1669 | fi |
a0da5fe1 UD |
1670 | rm -f conftest*]) |
1671 | use_default_link=$libc_cv_use_default_link | |
fd26970f | 1672 | fi |
49803108 | 1673 | |
5c550700 RM |
1674 | AC_CACHE_CHECK(linker output format, libc_cv_output_format, [dnl |
1675 | if libc_cv_output_format=` | |
1676 | ${CC-cc} -nostartfiles -nostdlib -Wl,--print-output-format 2>&AS_MESSAGE_LOG_FD` | |
1677 | then | |
1678 | : | |
1679 | else | |
1680 | libc_cv_output_format= | |
1681 | fi | |
1682 | test -n "$libc_cv_output_format" || libc_cv_output_format=unknown]) | |
1683 | AC_SUBST(libc_cv_output_format) | |
1684 | ||
22dca1ea | 1685 | AC_CACHE_CHECK(for -fno-toplevel-reorder -fno-section-anchors, libc_cv_fno_toplevel_reorder, [dnl |
49803108 AJ |
1686 | cat > conftest.c <<EOF |
1687 | int foo; | |
1688 | EOF | |
22dca1ea | 1689 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -fno-toplevel-reorder -fno-section-anchors |
49803108 AJ |
1690 | conftest.c 1>&AS_MESSAGE_LOG_FD]) |
1691 | then | |
18e2ac6d | 1692 | libc_cv_fno_toplevel_reorder=yes |
49803108 | 1693 | else |
18e2ac6d | 1694 | libc_cv_fno_toplevel_reorder=no |
49803108 AJ |
1695 | fi |
1696 | rm -f conftest*]) | |
18e2ac6d | 1697 | if test $libc_cv_fno_toplevel_reorder = yes; then |
22dca1ea | 1698 | fno_unit_at_a_time="-fno-toplevel-reorder -fno-section-anchors" |
18e2ac6d | 1699 | else |
49803108 AJ |
1700 | fno_unit_at_a_time=-fno-unit-at-a-time |
1701 | fi | |
1702 | AC_SUBST(fno_unit_at_a_time) | |
fd26970f | 1703 | |
401a9ec9 | 1704 | AC_CACHE_CHECK(for -fstack-protector, libc_cv_ssp, [dnl |
17228132 TS |
1705 | LIBC_TRY_CC_OPTION([$CFLAGS $CPPFLAGS -Werror -fstack-protector], |
1706 | [libc_cv_ssp=yes], | |
1707 | [libc_cv_ssp=no]) | |
1708 | ]) | |
401a9ec9 UD |
1709 | AC_SUBST(libc_cv_ssp) |
1710 | ||
b037a293 UD |
1711 | AC_CACHE_CHECK(for -fgnu89-inline, libc_cv_gnu89_inline, [dnl |
1712 | cat > conftest.c <<EOF | |
1713 | int foo; | |
1714 | #ifdef __GNUC_GNU_INLINE__ | |
1715 | main () { return 0;} | |
1716 | #else | |
1717 | #error | |
1718 | #endif | |
1719 | EOF | |
371f84a4 JJ |
1720 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -std=gnu99 -fgnu89-inline |
1721 | -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD]) | |
b037a293 UD |
1722 | then |
1723 | libc_cv_gnu89_inline=yes | |
1724 | else | |
1725 | libc_cv_gnu89_inline=no | |
1726 | fi | |
1727 | rm -f conftest*]) | |
1728 | if test $libc_cv_gnu89_inline = yes; then | |
1c7570ff | 1729 | gnu89_inline=-fgnu89-inline |
b037a293 | 1730 | else |
1c7570ff | 1731 | gnu89_inline= |
b037a293 | 1732 | fi |
1c7570ff | 1733 | AC_SUBST(gnu89_inline) |
b037a293 | 1734 | |
a0da5fe1 UD |
1735 | AC_CACHE_CHECK(whether cc puts quotes around section names, |
1736 | libc_cv_have_section_quotes, | |
1737 | [cat > conftest.c <<EOF | |
1738 | static const int foo | |
1739 | __attribute__ ((section ("bar"))) = 1; | |
e26dd47f | 1740 | EOF |
a0da5fe1 UD |
1741 | if ${CC-cc} -S conftest.c -o conftest.s; then |
1742 | if grep '\.section.*"bar"' conftest.s >/dev/null; then | |
1743 | libc_cv_have_section_quotes=yes | |
e26dd47f | 1744 | else |
a0da5fe1 | 1745 | libc_cv_have_section_quotes=no |
e26dd47f | 1746 | fi |
a0da5fe1 UD |
1747 | else |
1748 | libc_cv_have_section_quotes=unknown | |
1749 | fi | |
1750 | rm -f conftest.{c,s} | |
1751 | ]) | |
1752 | if test $libc_cv_have_section_quotes = yes; then | |
1753 | AC_DEFINE(HAVE_SECTION_QUOTES) | |
9a97d1f7 UD |
1754 | fi |
1755 | ||
1756 | AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive, | |
75d86c1f | 1757 | [dnl |
c224a18a | 1758 | cat > conftest.s <<EOF |
2293395f | 1759 | ${libc_cv_dot_text} |
7b8e0d49 | 1760 | .globl foo |
ae1025be | 1761 | foo: |
c224a18a RM |
1762 | .weak foo |
1763 | .weak bar; bar = foo | |
1764 | EOF | |
3217788f | 1765 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then |
9a97d1f7 UD |
1766 | libc_cv_asm_weak_directive=yes |
1767 | else | |
1768 | libc_cv_asm_weak_directive=no | |
1769 | fi | |
1770 | rm -f conftest*]) | |
c224a18a | 1771 | |
c8cf0b14 | 1772 | if test $libc_cv_asm_weak_directive = no; then |
c224a18a RM |
1773 | AC_CACHE_CHECK(for assembler .weakext directive, |
1774 | libc_cv_asm_weakext_directive, | |
1775 | [dnl | |
1776 | cat > conftest.s <<EOF | |
2293395f | 1777 | ${libc_cv_dot_text} |
7b8e0d49 | 1778 | .globl foo |
ae1025be | 1779 | foo: |
f802accb UD |
1780 | .weakext bar foo |
1781 | .weakext baz | |
7b8e0d49 | 1782 | .globl baz |
9a97d1f7 | 1783 | baz: |
c224a18a | 1784 | EOF |
3217788f | 1785 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then |
c224a18a RM |
1786 | libc_cv_asm_weakext_directive=yes |
1787 | else | |
1788 | libc_cv_asm_weakext_directive=no | |
1789 | fi | |
1790 | rm -f conftest*]) | |
1791 | ||
9a97d1f7 | 1792 | fi # no .weak |
c224a18a | 1793 | |
ffcf9634 | 1794 | if test $libc_cv_asm_weak_directive = yes; then |
c224a18a | 1795 | AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE) |
ffcf9634 | 1796 | elif test $libc_cv_asm_weakext_directive = yes; then |
c224a18a RM |
1797 | AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE) |
1798 | fi | |
1799 | ||
50189569 | 1800 | AC_CACHE_CHECK(whether CFI directives are supported, libc_cv_asm_cfi_directives, [dnl |
ced368f7 UD |
1801 | case $machine in |
1802 | sparc/sparc64*) cfi_offset=2047;; | |
1803 | *) cfi_offset=0;; | |
1804 | esac | |
50189569 | 1805 | cat > conftest.s <<EOF |
77e8bddf AS |
1806 | .text |
1807 | .type func,%function | |
50189569 | 1808 | func: |
77e8bddf | 1809 | .cfi_startproc |
f212e8dc | 1810 | .cfi_remember_state |
ced368f7 | 1811 | .cfi_rel_offset 1, $cfi_offset |
77e8bddf | 1812 | .cfi_endproc |
50189569 AJ |
1813 | EOF |
1814 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
1815 | libc_cv_asm_cfi_directives=yes | |
1816 | else | |
1817 | libc_cv_asm_cfi_directives=no | |
1818 | fi | |
1819 | rm -f conftest*]) | |
1820 | if test $libc_cv_asm_cfi_directives = yes; then | |
1821 | AC_DEFINE(HAVE_ASM_CFI_DIRECTIVES) | |
bcd5f356 | 1822 | fi |
50189569 | 1823 | |
a641835a RM |
1824 | AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl |
1825 | cat > conftest.c <<\EOF | |
5f0e6fc7 | 1826 | _start () {} |
dcf0671d UD |
1827 | int __eh_pc; |
1828 | __throw () {} | |
a641835a | 1829 | EOF |
dcea62dd | 1830 | dnl No \ in command here because it ends up inside ''. |
3217788f | 1831 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dcea62dd | 1832 | -nostdlib -nostartfiles -Wl,--no-whole-archive |
c2f55635 | 1833 | -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then |
a641835a RM |
1834 | libc_cv_ld_no_whole_archive=yes |
1835 | else | |
1836 | libc_cv_ld_no_whole_archive=no | |
1837 | fi | |
1838 | rm -f conftest*]) | |
3ce1f295 UD |
1839 | if test $libc_cv_ld_no_whole_archive = no; then |
1840 | AC_MSG_ERROR([support for --no-whole-archive is needed]) | |
b17277cf | 1841 | fi |
a641835a | 1842 | |
dff14448 | 1843 | AC_CACHE_CHECK(for gcc -fexceptions, libc_cv_gcc_exceptions, [dnl |
b236e99d UD |
1844 | cat > conftest.c <<\EOF |
1845 | _start () {} | |
1846 | int __eh_pc; | |
1847 | __throw () {} | |
1848 | EOF | |
1849 | dnl No \ in command here because it ends up inside ''. | |
3217788f | 1850 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dff14448 | 1851 | -nostdlib -nostartfiles -fexceptions |
c2f55635 | 1852 | -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then |
dff14448 | 1853 | libc_cv_gcc_exceptions=yes |
b236e99d | 1854 | else |
dff14448 | 1855 | libc_cv_gcc_exceptions=no |
b236e99d UD |
1856 | fi |
1857 | rm -f conftest*]) | |
dff14448 UD |
1858 | if test $libc_cv_gcc_exceptions = yes; then |
1859 | exceptions=-fexceptions | |
b17277cf | 1860 | fi |
dff14448 | 1861 | AC_SUBST(exceptions)dnl |
b236e99d | 1862 | |
66000494 UD |
1863 | if test "$host_cpu" = powerpc ; then |
1864 | # Check for a bug present in at least versions 2.8.x of GCC | |
1865 | # and versions 1.0.x of EGCS. | |
1866 | AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl | |
1867 | AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],, | |
1868 | libc_cv_c_asmcr0_bug='no', | |
1869 | libc_cv_c_asmcr0_bug='yes')]) | |
1870 | if test "$libc_cv_c_asmcr0_bug" != 'no'; then | |
1871 | AC_DEFINE(BROKEN_PPC_ASM_CR0) | |
1872 | fi | |
1873 | fi | |
1874 | ||
d555194c UD |
1875 | AC_CACHE_CHECK(for __builtin_memset, libc_cv_gcc_builtin_memset, [dnl |
1876 | cat > conftest.c <<\EOF | |
1877 | void zero (void *x) | |
1878 | { | |
a52d1562 | 1879 | __builtin_memset (x, 0, 1000); |
d555194c UD |
1880 | } |
1881 | EOF | |
1882 | dnl | |
1883 | if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "memset" > /dev/null]); | |
1884 | then | |
1885 | libc_cv_gcc_builtin_memset=no | |
1886 | else | |
1887 | libc_cv_gcc_builtin_memset=yes | |
1888 | fi | |
1889 | rm -f conftest* ]) | |
1890 | if test "$libc_cv_gcc_builtin_memset" = yes ; then | |
1891 | AC_DEFINE(HAVE_BUILTIN_MEMSET) | |
1892 | fi | |
1893 | ||
85dd1003 UD |
1894 | AC_CACHE_CHECK(for redirection of built-in functions, libc_cv_gcc_builtin_redirection, [dnl |
1895 | cat > conftest.c <<\EOF | |
1896 | extern char *strstr (const char *, const char *) __asm ("my_strstr"); | |
1897 | char *foo (const char *a, const char *b) | |
1898 | { | |
1899 | return __builtin_strstr (a, b); | |
1900 | } | |
1901 | EOF | |
1902 | dnl | |
1903 | if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "my_strstr" > /dev/null]); | |
1904 | then | |
1905 | libc_cv_gcc_builtin_redirection=yes | |
1906 | else | |
1907 | libc_cv_gcc_builtin_redirection=no | |
1908 | fi | |
1909 | rm -f conftest* ]) | |
3ce1f295 UD |
1910 | if test "$libc_cv_gcc_builtin_redirection" = no; then |
1911 | AC_MSG_ERROR([support for the symbol redirection needed]) | |
85dd1003 UD |
1912 | fi |
1913 | ||
739d440d | 1914 | dnl Check whether the compiler supports the __thread keyword. |
3ce1f295 UD |
1915 | AC_CACHE_CHECK([for __thread], libc_cv_gcc___thread, |
1916 | [cat > conftest.c <<\EOF | |
fbb18522 RM |
1917 | __thread int a = 42; |
1918 | EOF | |
3ce1f295 UD |
1919 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c >&AS_MESSAGE_LOG_FD]); then |
1920 | libc_cv_gcc___thread=yes | |
739d440d UD |
1921 | else |
1922 | libc_cv_gcc___thread=no | |
1923 | fi | |
3ce1f295 UD |
1924 | rm -f conftest*]) |
1925 | if test "$libc_cv_gcc___thread" = no; then | |
1926 | AC_MSG_ERROR([support for the __thread keyword is required]) | |
1927 | fi | |
739d440d | 1928 | |
3ce1f295 UD |
1929 | dnl Check whether the compiler supports the tls_model attribute. |
1930 | AC_CACHE_CHECK([for tls_model attribute], libc_cv_gcc_tls_model_attr, [dnl | |
1931 | cat > conftest.c <<\EOF | |
9b21e6bc RM |
1932 | extern __thread int a __attribute__((tls_model ("initial-exec"))); |
1933 | EOF | |
3ce1f295 UD |
1934 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -Werror conftest.c >&AS_MESSAGE_LOG_FD]); then |
1935 | libc_cv_gcc_tls_model_attr=yes | |
1936 | else | |
1937 | libc_cv_gcc_tls_model_attr=no | |
1938 | fi | |
1939 | rm -f conftest*]) | |
1940 | if test "$libc_cv_gcc_tls_model_attr" = no; then | |
1941 | AC_MSG_ERROR([support for the tls_model attribute is required]) | |
9b21e6bc | 1942 | fi |
739d440d | 1943 | |
7998fa78 AS |
1944 | dnl Determine how to disable generation of FMA instructions. |
1945 | AC_CACHE_CHECK([for compiler option to disable generation of FMA instructions], | |
1946 | libc_cv_cc_nofma, [dnl | |
1947 | libc_cv_cc_nofma= | |
1948 | for opt in -ffp-contract=off -mno-fused-madd; do | |
1949 | LIBC_TRY_CC_OPTION([$opt], [libc_cv_cc_nofma=$opt; break]) | |
1950 | done]) | |
1951 | ||
2cf9ad57 RM |
1952 | if test -n "$submachine"; then |
1953 | AC_CACHE_CHECK([for compiler option for CPU variant], | |
f7d82dc9 | 1954 | libc_cv_cc_submachine, [dnl |
2cf9ad57 RM |
1955 | libc_cv_cc_submachine=no |
1956 | for opt in "-march=$submachine" "-mcpu=$submachine"; do | |
40b601fb | 1957 | LIBC_TRY_CC_OPTION([$opt], [ |
2cf9ad57 | 1958 | libc_cv_cc_submachine="$opt" |
40b601fb | 1959 | break], []) |
2cf9ad57 RM |
1960 | done]) |
1961 | if test "x$libc_cv_cc_submachine" = xno; then | |
1962 | AC_MSG_ERROR([${CC-cc} does not support $submachine]) | |
1963 | fi | |
1964 | fi | |
1965 | AC_SUBST(libc_cv_cc_submachine) | |
1966 | ||
c8f3e6db UD |
1967 | dnl Check whether we have the gd library available. |
1968 | AC_MSG_CHECKING(for libgd) | |
6dab8688 UD |
1969 | if test "$with_gd" != "no"; then |
1970 | old_CFLAGS="$CFLAGS" | |
1971 | CFLAGS="$CFLAGS $libgd_include" | |
1972 | old_LDFLAGS="$LDFLAGS" | |
1973 | LDFLAGS="$LDFLAGS $libgd_ldflags" | |
1974 | old_LIBS="$LIBS" | |
1975 | LIBS="$LIBS -lgd -lpng -lz -lm" | |
1976 | AC_TRY_LINK([#include <gd.h>], [gdImagePng (0, 0)], LIBGD=yes, LIBGD=no) | |
1977 | CFLAGS="$old_CFLAGS" | |
1978 | LDFLAGS="$old_LDFLAGS" | |
1979 | LIBS="$old_LIBS" | |
1980 | else | |
1981 | LIBGD=no | |
1982 | fi | |
c8f3e6db UD |
1983 | AC_MSG_RESULT($LIBGD) |
1984 | AC_SUBST(LIBGD) | |
3d558f4e | 1985 | |
2fff3d93 UD |
1986 | # SELinux detection |
1987 | if test x$with_selinux = xno ; then | |
1988 | have_selinux=no; | |
1989 | else | |
1990 | # See if we have the SELinux library | |
1991 | AC_CHECK_LIB(selinux, is_selinux_enabled, | |
1992 | have_selinux=yes, have_selinux=no) | |
1993 | # See if we have the SELinux header with the NSCD permissions in it. | |
1994 | if test x$have_selinux = xyes ; then | |
1995 | AC_MSG_CHECKING([for NSCD Flask permissions in selinux/av_permissions.h]) | |
1996 | AC_TRY_COMPILE([#include <selinux/av_permissions.h>], | |
1997 | [#ifdef NSCD__SHMEMHOST | |
1998 | return 0; | |
1999 | #else | |
2000 | #error NSCD__SHMEMHOST not defined | |
2001 | #endif], | |
2002 | have_selinux=yes, have_selinux=no) | |
2003 | AC_MSG_RESULT($have_selinux) | |
2004 | fi | |
2005 | ||
49155d51 | 2006 | if test x$with_selinux = xyes ; then |
2fff3d93 | 2007 | if test x$have_selinux = xno ; then |
49155d51 | 2008 | AC_MSG_ERROR([SELinux explicitly required, but sufficiently recent SELinux library not found]) |
2fff3d93 UD |
2009 | fi |
2010 | fi | |
2011 | fi | |
2012 | # Check if we're building with SELinux support. | |
2013 | if test "x$have_selinux" = xyes; then | |
943db9eb | 2014 | AC_DEFINE(HAVE_SELINUX, 1, [SELinux support]) |
ec23b9be UD |
2015 | |
2016 | # See if we have the libaudit library | |
943db9eb | 2017 | AC_CHECK_LIB(audit, audit_log_user_avc_message, |
77e8bddf | 2018 | have_libaudit=yes, have_libaudit=no) |
ec23b9be | 2019 | if test "x$have_libaudit" = xyes; then |
943db9eb | 2020 | AC_DEFINE(HAVE_LIBAUDIT, 1, [SELinux libaudit support]) |
ec23b9be UD |
2021 | fi |
2022 | AC_SUBST(have_libaudit) | |
1f063dca UD |
2023 | |
2024 | # See if we have the libcap library | |
2025 | AC_CHECK_LIB(cap, cap_init, have_libcap=yes, have_libcap=no) | |
2026 | if test "x$have_libcap" = xyes; then | |
2027 | AC_DEFINE(HAVE_LIBCAP, 1, [SELinux libcap support]) | |
2028 | fi | |
2029 | AC_SUBST(have_libcap) | |
2fff3d93 UD |
2030 | fi |
2031 | AC_SUBST(have_selinux) | |
2032 | ||
8ed1e7d5 GK |
2033 | dnl check for the size of 'long double'. |
2034 | AC_CHECK_SIZEOF(long double, 0) | |
2035 | sizeof_long_double=$ac_cv_sizeof_long_double | |
2036 | AC_SUBST(sizeof_long_double) | |
2037 | ||
61653dfb RM |
2038 | CPPUNDEFS= |
2039 | dnl Check for silly hacked compilers predefining _FORTIFY_SOURCE. | |
2040 | dnl Since we are building the implementations of the fortified functions here, | |
2041 | dnl having the macro defined interacts very badly. | |
2042 | AC_CACHE_CHECK([for _FORTIFY_SOURCE predefine], libc_cv_predef_fortify_source, | |
2043 | [AC_TRY_COMPILE([], [ | |
2044 | #ifdef _FORTIFY_SOURCE | |
2045 | # error bogon | |
2046 | #endif], | |
2047 | [libc_cv_predef_fortify_source=no], | |
2048 | [libc_cv_predef_fortify_source=yes])]) | |
2049 | if test $libc_cv_predef_fortify_source = yes; then | |
2050 | CPPUNDEFS="${CPPUNDEFS:+$CPPUNDEFS }-U_FORTIFY_SOURCE" | |
2051 | fi | |
2052 | AC_SUBST(CPPUNDEFS) | |
2053 | ||
30b99d79 RM |
2054 | dnl Check for silly hacked compilers inserting -fstack-protector. |
2055 | dnl This breaks badly for the early startup code we compile, since | |
2056 | dnl the compiled code can refer to a magic machine-dependent location | |
2057 | dnl for the canary value before we have sufficient setup for that to | |
2058 | dnl work. It's also questionable to build all of libc with this flag | |
2059 | dnl even when you're doing that for most applications you build, since | |
2060 | dnl libc's code is so heavily-used and performance-sensitive. If we | |
2061 | dnl ever really want to make that work, it should be enabled explicitly | |
2062 | dnl in the libc build, not inherited from implicit compiler settings. | |
2063 | AC_CACHE_CHECK([whether $CC implicitly enables -fstack-protector], | |
2064 | libc_cv_predef_stack_protector, [ | |
2065 | AC_TRY_COMPILE([extern void foobar (char *);], | |
2066 | [char large_array[2048]; foobar (large_array);], [ | |
2067 | libc_undefs=`$NM -u conftest.o | | |
2068 | LC_ALL=C $AWK '$1 == "U" { print $2 | "sort -u"; next } { exit(1) }' \ | |
2069 | 2>&AS_MESSAGE_LOG_FD` || { | |
2070 | AC_MSG_ERROR([confusing output from $NM -u]) | |
2071 | } | |
2072 | echo >&AS_MESSAGE_LOG_FD "libc_undefs='$libc_undefs'" | |
59f0c22e JM |
2073 | # On some architectures, there are architecture-specific undefined |
2074 | # symbols (resolved by the linker), so filter out unknown symbols. | |
2075 | # This will fail to produce the correct result if the compiler | |
2076 | # defaults to -fstack-protector but this produces an undefined symbol | |
2077 | # other than __stack_chk_fail. However, compilers like that have not | |
2078 | # been encountered in practice. | |
2079 | libc_undefs=`echo "$libc_undefs" | egrep '^(foobar|__stack_chk_fail)$'` | |
30b99d79 RM |
2080 | case "$libc_undefs" in |
2081 | foobar) libc_cv_predef_stack_protector=no ;; | |
2082 | '__stack_chk_fail | |
2083 | foobar') libc_cv_predef_stack_protector=yes ;; | |
2084 | *) AC_MSG_ERROR([unexpected symbols in test: $libc_undefs]) ;; | |
2085 | esac], | |
2086 | [AC_MSG_ERROR([test compilation failed])]) | |
2087 | ]) | |
2088 | libc_extra_cflags= | |
2089 | if test $libc_cv_predef_stack_protector = yes; then | |
2090 | libc_extra_cflags=-fno-stack-protector | |
2091 | fi | |
2092 | AC_SUBST(libc_extra_cflags) | |
2093 | ||
c224a18a RM |
2094 | ### End of automated tests. |
2095 | ### Now run sysdeps configure fragments. | |
2096 | ||
cb343854 | 2097 | # They also can set these variables. |
591e1ffb | 2098 | use_ldconfig=no |
cb343854 | 2099 | ldd_rewrite_script=no |
77259608 | 2100 | libc_cv_sysconfdir=$sysconfdir |
4248b1b1 | 2101 | libc_cv_localstatedir=$localstatedir |
74bd2300 | 2102 | libc_cv_gcc_unwind_find_fde=no |
e2fd3cbe | 2103 | libc_cv_idn=no |
cb343854 | 2104 | |
28f540f4 | 2105 | # Iterate over all the sysdep directories we will use, running their |
09055553 | 2106 | # configure fragments. |
28f540f4 | 2107 | for dir in $sysnames; do |
57ba7bb4 UD |
2108 | case $dir in |
2109 | /*) dest=$dir ;; | |
2110 | *) dest=$srcdir/$dir ;; | |
2111 | esac | |
2112 | if test -r $dest/configure; then | |
d1149385 | 2113 | AC_MSG_RESULT(running configure fragment for $dir) |
57ba7bb4 | 2114 | . $dest/configure |
28f540f4 | 2115 | fi |
28f540f4 RM |
2116 | done |
2117 | ||
74bd2300 UD |
2118 | if test x$libc_cv_gcc_unwind_find_fde = xyes; then |
2119 | AC_DEFINE(EXPORT_UNWIND_FIND_FDE) | |
2120 | fi | |
2121 | AC_SUBST(libc_cv_gcc_unwind_find_fde) | |
2122 | ||
a53bad16 UD |
2123 | # Test for old glibc 2.0.x headers so that they can be removed properly |
2124 | # Search only in includedir. | |
2125 | AC_MSG_CHECKING(for old glibc 2.0.x headers) | |
350eb336 | 2126 | if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h" |
a53bad16 UD |
2127 | then |
2128 | old_glibc_headers=yes | |
2129 | else | |
2130 | old_glibc_headers=no | |
2131 | fi | |
2132 | AC_MSG_RESULT($old_glibc_headers) | |
2133 | if test ${old_glibc_headers} = yes; then | |
2134 | AC_MSG_WARN(*** During \"make install\" old headers from glibc 2.0.x will) | |
2135 | AC_MSG_WARN(*** be removed.) | |
2136 | fi | |
b195f6bc | 2137 | AC_SUBST(old_glibc_headers) |
26b4d766 | 2138 | |
84384f5b | 2139 | AC_SUBST(libc_cv_slibdir) |
a1d84548 | 2140 | AC_SUBST(libc_cv_localedir) |
77259608 | 2141 | AC_SUBST(libc_cv_sysconfdir) |
4248b1b1 | 2142 | AC_SUBST(libc_cv_localstatedir) |
1ef32c3d | 2143 | AC_SUBST(libc_cv_rootsbindir) |
bcd5f356 | 2144 | AC_SUBST(libc_cv_forced_unwind) |
1ef32c3d | 2145 | |
58a4b51a RM |
2146 | dnl sysdeps/CPU/configure.in checks set this via arch-specific asm tests |
2147 | AC_SUBST(libc_cv_cpp_asm_debuginfo) | |
06e51c8f | 2148 | AC_SUBST(libc_cv_cc_sse4) |
b0ecde3a | 2149 | AC_SUBST(libc_cv_cc_avx) |
3b100462 | 2150 | AC_SUBST(libc_cv_cc_sse2avx) |
091023f5 | 2151 | AC_SUBST(libc_cv_cc_novzeroupper) |
af968f62 | 2152 | AC_SUBST(libc_cv_cc_fma4) |
7998fa78 | 2153 | AC_SUBST(libc_cv_cc_nofma) |
01f1f5ee | 2154 | AC_SUBST(libc_cv_as_i686) |
eae47a36 | 2155 | AC_SUBST(libc_cv_sparc_as_vis3) |
58a4b51a | 2156 | |
591e1ffb | 2157 | AC_SUBST(use_ldconfig) |
cb343854 | 2158 | AC_SUBST(ldd_rewrite_script) |
84384f5b | 2159 | |
650425ce | 2160 | AC_SUBST(static) |
ff3d7ed3 | 2161 | AC_SUBST(shared) |
a334319f | 2162 | |
ff886b82 UD |
2163 | AC_CACHE_CHECK([whether -fPIC is default], libc_cv_pic_default, |
2164 | [libc_cv_pic_default=yes | |
cc3fa755 | 2165 | cat > conftest.c <<EOF |
9756dfe1 | 2166 | #if defined __PIC__ || defined __pic__ || defined PIC || defined pic |
cc3fa755 UD |
2167 | # error PIC is default. |
2168 | #endif | |
2169 | EOF | |
0b4ee387 | 2170 | if eval "${CC-cc} -S conftest.c 2>&AS_MESSAGE_LOG_FD 1>&AS_MESSAGE_LOG_FD"; then |
ff886b82 | 2171 | libc_cv_pic_default=no |
cc3fa755 UD |
2172 | fi |
2173 | rm -f conftest.*]) | |
ff886b82 | 2174 | AC_SUBST(libc_cv_pic_default) |
cc3fa755 | 2175 | |
ff3d7ed3 | 2176 | AC_SUBST(profile) |
5107cf1d | 2177 | AC_SUBST(static_nss) |
ff3d7ed3 | 2178 | |
edf5b2d7 UD |
2179 | AC_SUBST(DEFINES) |
2180 | ||
61c83c3f RM |
2181 | dnl See sysdeps/mach/configure.in for this variable. |
2182 | AC_SUBST(mach_interface_list) | |
2183 | ||
28f540f4 RM |
2184 | if test "`(cd $srcdir; pwd)`" = "`pwd`"; then |
2185 | config_makefile= | |
2186 | else | |
2187 | config_makefile=Makefile | |
2188 | fi | |
2189 | ||
ee74a442 UD |
2190 | VERSION=`sed -n -e 's/^#define VERSION "\([^"]*\)"/\1/p' < $srcdir/version.h` |
2191 | RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h` | |
df4ef2ab | 2192 | AC_SUBST(VERSION) |
ee74a442 | 2193 | AC_SUBST(RELEASE) |
df4ef2ab | 2194 | |
09055553 | 2195 | AC_CONFIG_FILES([config.make ${config_makefile}]) |
c118d634 | 2196 | AC_CONFIG_COMMANDS([default],[[ |
737547be UD |
2197 | case $CONFIG_FILES in *config.make*) |
2198 | echo "$config_vars" >> config.make;; | |
2199 | esac | |
c118d634 RM |
2200 | test -d bits || mkdir bits]],[[config_vars='$config_vars']]) |
2201 | AC_OUTPUT |