]>
Commit | Line | Data |
---|---|---|
f4017d20 | 1 | dnl Process this file with autoconf to produce a configure script. |
f7934be8 | 2 | dnl Note we do not use AC_PREREQ here! See aclocal.m4 for what we use instead. |
f318beb8 | 3 | AC_INIT([GNU C Library], [(see version.h)], [http://sourceware.org/bugzilla/], [glibc]) |
5d77b1da | 4 | AC_CONFIG_SRCDIR([include/features.h]) |
6b7f6183 RM |
5 | AC_CONFIG_HEADERS([config.h]) |
6 | AC_CONFIG_AUX_DIR([scripts]) | |
28f540f4 | 7 | |
8b748aed JM |
8 | ACX_PKGVERSION([GNU libc]) |
9 | ACX_BUGURL([http://www.gnu.org/software/libc/bugs.html]) | |
10 | AC_DEFINE_UNQUOTED([PKGVERSION], ["$PKGVERSION"], | |
11 | [Package description]) | |
12 | AC_DEFINE_UNQUOTED([REPORT_BUGS_TO], ["$REPORT_BUGS_TO"], | |
13 | [Bug reporting address]) | |
14 | ||
918b5606 L |
15 | # Glibc should not depend on any header files |
16 | AC_DEFUN([_AC_INCLUDES_DEFAULT_REQUIREMENTS], | |
17 | [m4_divert_text([DEFAULTS], | |
18 | [ac_includes_default='/* none */'])]) | |
19 | ||
7967983f RM |
20 | dnl This is here so we can set $subdirs directly based on configure fragments. |
21 | AC_CONFIG_SUBDIRS() | |
22 | ||
c16a054d AS |
23 | AC_CANONICAL_HOST |
24 | ||
c0bac8b0 UD |
25 | AC_PROG_CC |
26 | if test $host != $build; then | |
27 | AC_CHECK_PROGS(BUILD_CC, gcc cc) | |
28 | fi | |
29 | AC_SUBST(cross_compiling) | |
30 | AC_PROG_CPP | |
31 | # We need the C++ compiler only for testing. | |
32 | AC_PROG_CXX | |
0cae3f4b | 33 | AC_CHECK_TOOL(READELF, readelf, false) |
c0bac8b0 | 34 | |
c72637d4 RM |
35 | if test "`cd $srcdir; /bin/pwd`" = "`/bin/pwd`"; then |
36 | AC_MSG_ERROR([you must configure in a separate build directory]) | |
37 | fi | |
38 | ||
28f540f4 RM |
39 | # This will get text that should go into config.make. |
40 | config_vars= | |
41 | ||
c8f3e6db | 42 | # Check for a --with-gd argument and set libgd-LDFLAGS in config.make. |
6b7f6183 | 43 | AC_ARG_WITH([gd], |
77e8bddf AS |
44 | AC_HELP_STRING([--with-gd=DIR], |
45 | [find libgd include dir and library with prefix DIR]), | |
c8f3e6db UD |
46 | [dnl |
47 | case "$with_gd" in | |
f5f7239f UD |
48 | yes|''|no) ;; |
49 | *) libgd_include="-I$withval/include" | |
c8f3e6db UD |
50 | libgd_ldflags="-L$withval/lib" ;; |
51 | esac | |
52 | ]) | |
6b7f6183 | 53 | AC_ARG_WITH([gd-include], |
77e8bddf AS |
54 | AC_HELP_STRING([--with-gd-include=DIR], |
55 | [find libgd include files in DIR]), | |
56 | [dnl | |
f5f7239f UD |
57 | case "$with_gd_include" in |
58 | ''|no) ;; | |
59 | *) libgd_include="-I$withval" ;; | |
60 | esac | |
61 | ]) | |
6b7f6183 | 62 | AC_ARG_WITH([gd-lib], |
77e8bddf AS |
63 | AC_HELP_STRING([--with-gd-lib=DIR], |
64 | [find libgd library files in DIR]), | |
65 | [dnl | |
f5f7239f UD |
66 | case "$with_gd_lib" in |
67 | ''|no) ;; | |
68 | *) libgd_ldflags="-L$withval" ;; | |
69 | esac | |
70 | ]) | |
71 | ||
72 | if test -n "$libgd_include"; then | |
73 | config_vars="$config_vars | |
cf90163d | 74 | CFLAGS-memusagestat.c = $libgd_include" |
f5f7239f UD |
75 | fi |
76 | if test -n "$libgd_ldflags"; then | |
77 | config_vars="$config_vars | |
78 | libgd-LDFLAGS = $libgd_ldflags" | |
79 | fi | |
28f540f4 | 80 | |
ff3d7ed3 | 81 | dnl Arguments to specify presence of other packages/features. |
6b7f6183 | 82 | AC_ARG_WITH([fp], |
77e8bddf AS |
83 | AC_HELP_STRING([--with-fp], |
84 | [if using floating-point hardware @<:@default=yes@:>@]), | |
6b7f6183 RM |
85 | [with_fp=$withval], |
86 | [with_fp=yes]) | |
675322a5 | 87 | AC_SUBST(with_fp) |
6b7f6183 | 88 | AC_ARG_WITH([binutils], |
77e8bddf AS |
89 | AC_HELP_STRING([--with-binutils=PATH], |
90 | [specify location of binutils (as and ld)]), | |
6b7f6183 RM |
91 | [path_binutils=$withval], |
92 | [path_binutils='']) | |
2fff3d93 | 93 | AC_ARG_WITH([selinux], |
77e8bddf AS |
94 | AC_HELP_STRING([--with-selinux], |
95 | [if building with SELinux support]), | |
2fff3d93 UD |
96 | [with_selinux=$withval], |
97 | [with_selinux=auto]) | |
28f540f4 | 98 | |
6b7f6183 | 99 | AC_ARG_WITH([headers], |
77e8bddf AS |
100 | AC_HELP_STRING([--with-headers=PATH], |
101 | [location of system headers to use | |
6b7f6183 RM |
102 | (for example /usr/src/linux/include) |
103 | @<:@default=compiler default@:>@]), | |
104 | [sysheaders=$withval], | |
105 | [sysheaders='']) | |
c91c505f | 106 | AC_SUBST(sysheaders) |
dbe7a0f5 | 107 | |
f781ef40 RM |
108 | AC_SUBST(use_default_link) |
109 | AC_ARG_WITH([default-link], | |
110 | AC_HELP_STRING([--with-default-link], | |
fd5e21c7 | 111 | [do not use explicit linker scripts]), |
f781ef40 | 112 | [use_default_link=$withval], |
fd5e21c7 | 113 | [use_default_link=default]) |
f781ef40 | 114 | |
6b7f6183 | 115 | AC_ARG_ENABLE([sanity-checks], |
77e8bddf AS |
116 | AC_HELP_STRING([--disable-sanity-checks], |
117 | [really do not use threads (should not be used except in special situations) @<:@default=yes@:>@]), | |
6b7f6183 RM |
118 | [enable_sanity=$enableval], |
119 | [enable_sanity=yes]) | |
a18f587d | 120 | |
6b7f6183 | 121 | AC_ARG_ENABLE([shared], |
77e8bddf | 122 | AC_HELP_STRING([--enable-shared], |
a0da5fe1 | 123 | [build shared library @<:@default=yes if GNU ld@:>@]), |
6b7f6183 | 124 | [shared=$enableval], |
a0da5fe1 | 125 | [shared=yes]) |
6b7f6183 | 126 | AC_ARG_ENABLE([profile], |
77e8bddf AS |
127 | AC_HELP_STRING([--enable-profile], |
128 | [build profiled library @<:@default=no@:>@]), | |
6b7f6183 | 129 | [profile=$enableval], |
11bf311e | 130 | [profile=no]) |
6b7f6183 | 131 | AC_ARG_ENABLE([versioning], |
77e8bddf AS |
132 | AC_HELP_STRING([--disable-versioning], |
133 | [do not include versioning information in the library objects @<:@default=yes if supported@:>@]), | |
6b7f6183 RM |
134 | [enable_versioning=$enableval], |
135 | [enable_versioning=yes]) | |
136 | ||
137 | AC_ARG_ENABLE([oldest-abi], | |
77e8bddf AS |
138 | AC_HELP_STRING([--enable-oldest-abi=ABI], |
139 | [configure the oldest ABI supported @<:@e.g. 2.2@:>@ @<:@default=glibc default@:>@]), | |
6b7f6183 RM |
140 | [oldest_abi=$enableval], |
141 | [oldest_abi=no]) | |
62ab42d6 UD |
142 | if test "$oldest_abi" = yes || test "$oldest_abi" = no; then |
143 | oldest_abi=default | |
144 | else | |
145 | AC_DEFINE_UNQUOTED(GLIBC_OLDEST_ABI, "$oldest_abi") | |
146 | fi | |
147 | AC_SUBST(oldest_abi) | |
148 | ||
35f1e827 UD |
149 | AC_ARG_ENABLE([stackguard-randomization], |
150 | AC_HELP_STRING([--enable-stackguard-randomization], | |
151 | [initialize __stack_chk_guard canary with a random number at program start]), | |
152 | [enable_stackguard_randomize=$enableval], | |
153 | [enable_stackguard_randomize=no]) | |
154 | if test "$enable_stackguard_randomize" = yes; then | |
155 | AC_DEFINE(ENABLE_STACKGUARD_RANDOMIZE) | |
156 | fi | |
157 | ||
6b3a2224 | 158 | dnl Generic infrastructure for drop-in additions to libc. |
6b7f6183 | 159 | AC_ARG_ENABLE([add-ons], |
77e8bddf AS |
160 | AC_HELP_STRING([--enable-add-ons@<:@=DIRS...@:>@], |
161 | [configure and build add-ons in DIR1,DIR2,... | |
162 | search for add-ons if no parameter given]), | |
e0a3ed4f | 163 | , [enable_add_ons=yes]) |
61952351 | 164 | |
6b7f6183 | 165 | AC_ARG_ENABLE([hidden-plt], |
77e8bddf AS |
166 | AC_HELP_STRING([--disable-hidden-plt], |
167 | [do not hide internal function calls to avoid PLT]), | |
6b7f6183 RM |
168 | [hidden=$enableval], |
169 | [hidden=yes]) | |
749a9a4f RM |
170 | if test "x$hidden" = xno; then |
171 | AC_DEFINE(NO_HIDDEN) | |
172 | fi | |
173 | ||
4df8c11d UD |
174 | AC_ARG_ENABLE([bind-now], |
175 | AC_HELP_STRING([--enable-bind-now], | |
176 | [disable lazy relocations in DSOs]), | |
177 | [bindnow=$enableval], | |
178 | [bindnow=no]) | |
179 | AC_SUBST(bindnow) | |
180 | ||
5107cf1d UD |
181 | dnl On some platforms we cannot use dynamic loading. We must provide |
182 | dnl static NSS modules. | |
6b7f6183 | 183 | AC_ARG_ENABLE([static-nss], |
77e8bddf AS |
184 | AC_HELP_STRING([--enable-static-nss], |
185 | [build static NSS modules @<:@default=no@:>@]), | |
6b7f6183 RM |
186 | [static_nss=$enableval], |
187 | [static_nss=no]) | |
834cef7c UD |
188 | dnl Enable static NSS also if we build no shared objects. |
189 | if test x"$static_nss" = xyes || test x"$shared" = xno; then | |
3172f58f | 190 | static_nss=yes |
5107cf1d UD |
191 | AC_DEFINE(DO_STATIC_NSS) |
192 | fi | |
193 | ||
6b7f6183 | 194 | AC_ARG_ENABLE([force-install], |
77e8bddf AS |
195 | AC_HELP_STRING([--disable-force-install], |
196 | [don't force installation of files from this package, even if they are older than the installed files]), | |
6b7f6183 RM |
197 | [force_install=$enableval], |
198 | [force_install=yes]) | |
73237de3 UD |
199 | AC_SUBST(force_install) |
200 | ||
958f238f UD |
201 | dnl On some platforms we allow dropping compatibility with all kernel |
202 | dnl versions. | |
6b7f6183 | 203 | AC_ARG_ENABLE([kernel], |
77e8bddf AS |
204 | AC_HELP_STRING([--enable-kernel=VERSION], |
205 | [compile for compatibility with kernel not older than VERSION]), | |
6b7f6183 RM |
206 | [minimum_kernel=$enableval], |
207 | []) | |
86cfe82d UD |
208 | dnl Prevent unreasonable values. |
209 | if test "$minimum_kernel" = yes || test "$minimum_kernel" = no; then | |
210 | # Better nothing than this. | |
211 | minimum_kernel="" | |
269e369f UD |
212 | else |
213 | if test "$minimum_kernel" = current; then | |
214 | minimum_kernel=`uname -r 2>/dev/null` || minimum_kernel= | |
215 | fi | |
86cfe82d | 216 | fi |
958f238f | 217 | |
6cc7d725 UD |
218 | dnl For the development we sometimes want gcc to issue even more warnings. |
219 | dnl This is not the default since many of the extra warnings are not | |
220 | dnl appropriate. | |
6b7f6183 RM |
221 | AC_ARG_ENABLE([all-warnings], |
222 | AC_HELP_STRING([--enable-all-warnings], | |
77e8bddf | 223 | [enable all useful warnings gcc can issue]), |
6b7f6183 RM |
224 | [all_warnings=$enableval], |
225 | []) | |
6cc7d725 UD |
226 | AC_SUBST(all_warnings) |
227 | ||
425ce2ed UD |
228 | AC_ARG_ENABLE([multi-arch], |
229 | AC_HELP_STRING([--enable-multi-arch], | |
230 | [enable single DSO with optimizations for multiple architectures]), | |
231 | [multi_arch=$enableval], | |
6f89d2f3 | 232 | [multi_arch=default]) |
425ce2ed | 233 | |
ff886b82 UD |
234 | AC_ARG_ENABLE([nss-crypt], |
235 | AC_HELP_STRING([--enable-nss-crypt], | |
236 | [enable libcrypt to use nss]), | |
237 | [nss_crypt=$enableval], | |
238 | [nss_crypt=no]) | |
239 | if test x$nss_crypt = xyes; then | |
240 | nss_includes=-I$(nss-config --includedir 2>/dev/null) | |
241 | if test $? -ne 0; then | |
242 | AC_MSG_ERROR([cannot find include directory with nss-config]) | |
243 | fi | |
244 | old_CFLAGS="$CFLAGS" | |
245 | CFLAGS="$CFLAGS $nss_includes" | |
b68e08db | 246 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([typedef int PRBool; |
ff886b82 UD |
247 | #include <hasht.h> |
248 | #include <nsslowhash.h> | |
b68e08db | 249 | void f (void) { NSSLOW_Init (); }])], |
ff886b82 UD |
250 | libc_cv_nss_crypt=yes, |
251 | AC_MSG_ERROR([ | |
252 | cannot find NSS headers with lowlevel hash function interfaces])) | |
253 | old_LIBS="$LIBS" | |
254 | LIBS="$LIBS -lfreebl3" | |
255 | AC_LINK_IFELSE([AC_LANG_PROGRAM([typedef int PRBool; | |
256 | #include <hasht.h> | |
257 | #include <nsslowhash.h>], | |
258 | [NSSLOW_Init();])], | |
259 | libc_cv_nss_crypt=yes, | |
260 | AC_MSG_ERROR([ | |
261 | cannot link program using lowlevel NSS hash functions])) | |
262 | CFLAGS="$old_CFLAGS" | |
263 | LIBS="$old_LIBS" | |
264 | else | |
265 | libc_cv_nss_crypt=no | |
266 | fi | |
267 | AC_SUBST(libc_cv_nss_crypt) | |
268 | ||
3a097cc7 | 269 | |
021db4be AJ |
270 | AC_ARG_ENABLE([obsolete-rpc], |
271 | AC_HELP_STRING([--enable-obsolete-rpc], | |
272 | [build and install the obsolete RPC code for link-time usage]), | |
273 | [link_obsolete_rpc=$enableval], | |
274 | [link_obsolete_rpc=no]) | |
275 | AC_SUBST(link_obsolete_rpc) | |
276 | ||
277 | if test "$link_obsolete_rpc" = yes; then | |
278 | AC_DEFINE(LINK_OBSOLETE_RPC) | |
279 | fi | |
280 | ||
3a097cc7 RM |
281 | AC_ARG_ENABLE([systemtap], |
282 | [AS_HELP_STRING([--enable-systemtap], | |
283 | [enable systemtap static probe points @<:@default=no@:>@])], | |
284 | [systemtap=$enableval], | |
285 | [systemtap=no]) | |
286 | if test "x$systemtap" != xno; then | |
287 | AC_CACHE_CHECK([for systemtap static probe support], libc_cv_sdt, [dnl | |
288 | old_CFLAGS="$CFLAGS" | |
289 | CFLAGS="-std=gnu99 $CFLAGS" | |
0e3933b9 | 290 | AC_COMPILE_IFELSE([AC_LANG_SOURCE([[#include <sys/sdt.h> |
3a097cc7 RM |
291 | void foo (int i, void *p) |
292 | { | |
293 | asm ("" STAP_PROBE_ASM (foo, bar, STAP_PROBE_ASM_TEMPLATE (2)) "" | |
294 | :: STAP_PROBE_ASM_OPERANDS (2, i, p)); | |
0e3933b9 | 295 | }]])], [libc_cv_sdt=yes], [libc_cv_sdt=no]) |
3a097cc7 RM |
296 | CFLAGS="$old_CFLAGS"]) |
297 | if test $libc_cv_sdt = yes; then | |
298 | AC_DEFINE([USE_STAP_PROBE]) | |
299 | elif test "x$systemtap" != xauto; then | |
300 | AC_MSG_FAILURE([systemtap support needs sys/sdt.h with asm support]) | |
301 | fi | |
302 | fi | |
303 | ||
c53d909c RM |
304 | AC_ARG_ENABLE([build-nscd], |
305 | [AS_HELP_STRING([--disable-build-nscd], | |
306 | [disable building and installing the nscd daemon])], | |
307 | [build_nscd=$enableval], | |
308 | [build_nscd=default]) | |
309 | AC_SUBST(build_nscd) | |
310 | ||
3cc3ef96 RM |
311 | # Note the use of $use_nscd is near the bottom of the file. |
312 | AC_ARG_ENABLE([nscd], | |
313 | [AS_HELP_STRING([--disable-nscd], | |
314 | [library functions will not contact the nscd daemon])], | |
315 | [use_nscd=$enableval], | |
316 | [use_nscd=yes]) | |
317 | ||
8a523922 UD |
318 | # The way shlib-versions is used to generate soversions.mk uses a |
319 | # fairly simplistic model for name recognition that can't distinguish | |
320 | # i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os | |
321 | # of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can | |
322 | # tell. This doesn't get used much beyond that, so it's fairly safe. | |
323 | case "$host_os" in | |
324 | linux*) | |
325 | ;; | |
326 | gnu*) | |
327 | host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'` | |
328 | ;; | |
329 | esac | |
330 | ||
28f540f4 RM |
331 | # We keep the original values in `$config_*' and never modify them, so we |
332 | # can write them unchanged into config.make. Everything else uses | |
333 | # $machine, $vendor, and $os, and changes them whenever convenient. | |
334 | config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os | |
335 | ||
2f64b655 UD |
336 | # Don't allow vendor == "unknown" |
337 | test "$config_vendor" = unknown && config_vendor= | |
338 | config_os="`echo $config_os | sed 's/^unknown-//'`" | |
339 | ||
a2fe9c76 | 340 | # Some configurations imply other options. |
0269750c | 341 | elf=yes |
a2fe9c76 | 342 | |
8f73811b RM |
343 | # The configure fragment of an add-on port can modify these to supplement |
344 | # or override the table in the case statement below. No fragment should | |
345 | # ever change the config_* variables, however. | |
28f540f4 RM |
346 | machine=$config_machine |
347 | vendor=$config_vendor | |
348 | os=$config_os | |
b22d21b3 | 349 | base_os='' |
28f540f4 | 350 | |
a808d541 UD |
351 | # config.guess on some IBM machines says `rs6000' instead of `powerpc'. |
352 | # Unify this here. | |
353 | if test "$machine" = rs6000; then | |
354 | machine="powerpc" | |
355 | fi | |
356 | ||
f4b07664 RM |
357 | # Braindead PowerPC box with absolutely no FPU. |
358 | case "$machine-$host_os" in | |
359 | powerpc*-*soft) | |
360 | with_fp=no | |
361 | ;; | |
362 | esac | |
363 | ||
2ceaa76a RM |
364 | submachine= |
365 | AC_ARG_WITH([cpu], | |
366 | AS_HELP_STRING([--with-cpu=CPU], [select code for CPU variant]), | |
367 | [dnl | |
368 | case "$withval" in | |
369 | yes|'') AC_MSG_ERROR([--with-cpu requires an argument]) ;; | |
370 | no) ;; | |
371 | *) submachine="$withval" ;; | |
372 | esac | |
373 | ]) | |
374 | ||
10a803e0 RM |
375 | dnl Let sysdeps/*/preconfigure act here, like they can in add-ons. |
376 | LIBC_PRECONFIGURE([$srcdir], [for sysdeps]) | |
377 | ||
e0a3ed4f | 378 | # An add-on can set this when it wants to disable the sanity check below. |
8f73811b RM |
379 | libc_config_ok=no |
380 | ||
381 | dnl Having this here, though empty, makes sure that if add-ons' fragments | |
382 | dnl do AC_CONFIG_SUBDIRS([some-dir]), which just sets $subdirs, then | |
383 | dnl our AC_OUTPUT will actually use it. | |
384 | AC_CONFIG_SUBDIRS() | |
385 | ||
e0a3ed4f RM |
386 | case "$enable_add_ons" in |
387 | ''|no) add_ons= ;; | |
388 | yes|'*') | |
389 | add_ons=`cd $srcdir && ls -d 2> /dev/null */configure */sysdeps | | |
390 | sed 's@/[[^/]]*$@@' | sort | uniq` | |
391 | add_ons_automatic=yes | |
392 | ;; | |
393 | *) add_ons=`echo "$enable_add_ons" | sed 's/,/ /g'` | |
394 | add_ons_automatic=no ;; | |
395 | esac | |
396 | ||
397 | configured_add_ons= | |
8f73811b RM |
398 | add_ons_sfx= |
399 | add_ons_pfx= | |
400 | if test x"$add_ons" != x; then | |
401 | for f in $add_ons; do | |
402 | # Some sanity checks | |
403 | case "$f" in | |
404 | crypt) | |
405 | AC_MSG_ERROR([ | |
406 | *** It seems that you're using an old \`crypt' add-on. crypt is now | |
407 | *** part of glibc and using the old add-on will not work with this | |
408 | *** release. Start again with fresh sources and without the old | |
409 | *** \`crypt' add-on.]) | |
410 | ;; | |
411 | localedata) | |
412 | AC_MSG_ERROR([ | |
413 | *** It seems that you're using an old \`localedata' add-on. localedata | |
414 | *** is now part of glibc and using the old add-on will not work with | |
415 | *** this release. Start again with fresh sources and without the old | |
416 | *** \`localedata' add-on.]) | |
417 | ;; | |
418 | esac | |
8f73811b RM |
419 | done |
420 | ||
9382fcee | 421 | # Now source each add-on's configure fragment. |
c80e931a RM |
422 | # The fragments can use $srcdir/$libc_add_on to find themselves, |
423 | # and test $add_ons_automatic to see if they were explicitly requested. | |
424 | # A fragment can clear (or even change) $libc_add_on to affect | |
425 | # whether it goes into the list to be actually used in the build. | |
426 | use_add_ons= | |
9382fcee | 427 | for libc_add_on in $add_ons; do |
e0a3ed4f RM |
428 | # Test whether such a directory really exists. |
429 | # It can be absolute, or relative to $srcdir, or relative to the build dir. | |
430 | case "$libc_add_on" in | |
431 | /*) | |
432 | libc_add_on_srcdir=$libc_add_on | |
433 | ;; | |
434 | *) | |
435 | test -d "$srcdir/$libc_add_on" || { | |
77e8bddf | 436 | if test -d "$libc_add_on"; then |
e0a3ed4f RM |
437 | libc_add_on="`pwd`/$libc_add_on" |
438 | else | |
439 | AC_MSG_ERROR(add-on directory \"$libc_add_on\" does not exist) | |
440 | fi | |
441 | } | |
442 | libc_add_on_srcdir=$srcdir/$libc_add_on | |
443 | ;; | |
444 | esac | |
445 | ||
446 | libc_add_on_frag=$libc_add_on_srcdir/configure | |
447 | libc_add_on_canonical= | |
7967983f | 448 | libc_add_on_config_subdirs= |
e0a3ed4f RM |
449 | if test -r "$libc_add_on_frag"; then |
450 | AC_MSG_NOTICE(running configure fragment for add-on $libc_add_on) | |
451 | libc_add_on_canonical=unknown | |
452 | libc_add_on_subdirs= | |
453 | . "$libc_add_on_frag" | |
454 | test -z "$libc_add_on" || { | |
77e8bddf | 455 | configured_add_ons="$configured_add_ons $libc_add_on" |
e0a3ed4f RM |
456 | if test "x$libc_add_on_canonical" = xunknown; then |
457 | AC_MSG_ERROR(fragment must set \$libc_add_on_canonical) | |
458 | fi | |
459 | for d in $libc_add_on_subdirs; do | |
460 | case "$libc_add_on" in | |
461 | /*) subdir_srcdir="$libc_add_on" ;; | |
462 | *) subdir_srcdir="\$(..)$libc_add_on" ;; | |
463 | esac | |
464 | case "$d" in | |
465 | .) | |
466 | d="${libc_add_on_canonical:-$libc_add_on}" | |
467 | ;; | |
468 | /*) | |
469 | subdir_srcdir="$d" | |
470 | ;; | |
471 | *) | |
472 | subdir_srcdir="$subdir_srcdir/$d" | |
473 | ;; | |
474 | esac | |
475 | d=`echo "$d" | sed 's@/*$@@;s@^.*/@@'` | |
476 | add_on_subdirs="$add_on_subdirs $d" | |
477 | test "$subdir_srcdir" = "\$(..)$d" || config_vars="$config_vars | |
478 | $d-srcdir = $subdir_srcdir" | |
479 | done | |
7967983f RM |
480 | for d in $libc_add_on_config_subdirs; do |
481 | case "$d" in | |
482 | /*) AC_MSG_ERROR(dnl | |
483 | fragment uses absolute path in \$libc_add_on_config_subdirs) ;; | |
484 | esac | |
485 | if test ! -d "$libc_add_on_srcdir/$d"; then | |
486 | AC_MSG_ERROR(fragment wants to configure missing directory $d) | |
487 | fi | |
488 | case "$libc_add_on" in | |
489 | /*) AC_MSG_ERROR(dnl | |
490 | relative path required for add-on using \$libc_add_on_config_subdirs) ;; | |
491 | esac | |
492 | subdirs="$subdirs $libc_add_on/$d" | |
493 | done | |
e0a3ed4f | 494 | } |
8f73811b | 495 | fi |
619f9448 | 496 | if test -n "$libc_add_on"; then |
10a803e0 | 497 | LIBC_PRECONFIGURE([$libc_add_on_srcdir], [add-on $libc_add_on for]) |
619f9448 RM |
498 | use_add_ons="$use_add_ons $libc_add_on" |
499 | add_ons_pfx="$add_ons_pfx $libc_add_on/" | |
e0a3ed4f RM |
500 | test -z "$libc_add_on_canonical" || |
501 | add_ons_sfx="$add_ons_sfx /$libc_add_on_canonical" | |
619f9448 | 502 | fi |
8f73811b | 503 | done |
c80e931a RM |
504 | # Use echo to strip excess whitespace. |
505 | add_ons="`echo $use_add_ons`" | |
8f73811b RM |
506 | fi |
507 | AC_SUBST(add_ons) | |
e0a3ed4f | 508 | AC_SUBST(add_on_subdirs) |
8f73811b RM |
509 | |
510 | ||
bdc8eb03 UD |
511 | ### |
512 | ### I put this here to prevent those annoying emails from people who cannot | |
513 | ### read and try to compile glibc on unsupported platforms. --drepper | |
514 | ### | |
515 | ### By using the undocumented --enable-hacker-mode option for configure | |
516 | ### one can skip this test to make the configuration not fail for unsupported | |
517 | ### platforms. | |
518 | ### | |
8f73811b | 519 | if test -z "$enable_hacker_mode" && test x"$libc_config_ok" != xyes; then |
bdc8eb03 | 520 | case "$machine-$host_os" in |
2ce4f015 | 521 | *-linux* | *-gnu*) |
bdc8eb03 UD |
522 | ;; |
523 | *) | |
524 | echo "*** The GNU C library is currently not available for this platform." | |
525 | echo "*** So far nobody cared to port it and if there is no volunteer it" | |
526 | echo "*** might never happen. So, if you have interest to see glibc on" | |
527 | echo "*** this platform visit" | |
528 | echo "*** http://www.gnu.org/software/libc/porting.html" | |
529 | echo "*** and join the group of porters" | |
530 | exit 1 | |
531 | ;; | |
532 | esac | |
533 | fi | |
534 | ||
28f540f4 RM |
535 | dnl We need to use [ and ] for other purposes for a while now. |
536 | changequote(,)dnl | |
537 | # Expand the configuration machine name into a subdirectory by architecture | |
8f73811b RM |
538 | # type and particular chip. If an add-on configure fragment already set |
539 | # base_machine, we don't change it. | |
540 | test -n "$base_machine" || case "$machine" in | |
0b755dc4 | 541 | i[34567]86) base_machine=i386 machine=i386/$machine ;; |
92b27c74 UD |
542 | powerpc) base_machine=powerpc machine=powerpc/powerpc32 ;; |
543 | powerpc64) base_machine=powerpc machine=powerpc/powerpc64 ;; | |
136d4332 UD |
544 | s390) base_machine=s390 machine=s390/s390-32 ;; |
545 | s390x) base_machine=s390 machine=s390/s390-64 ;; | |
88615235 UD |
546 | sh3*) base_machine=sh machine=sh/sh3 ;; |
547 | sh4*) base_machine=sh machine=sh/sh4 ;; | |
ca34d7a7 UD |
548 | sparc | sparcv[67]) |
549 | base_machine=sparc machine=sparc/sparc32 ;; | |
550 | sparcv8 | supersparc | hypersparc) | |
551 | base_machine=sparc machine=sparc/sparc32/sparcv8 ;; | |
ae6b8730 RH |
552 | sparcv8plus | sparcv8plusa | sparcv9) |
553 | base_machine=sparc machine=sparc/sparc32/sparcv9 ;; | |
bb769ab6 | 554 | sparcv8plusb | sparcv9b) |
10c6e709 | 555 | base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9b ;; |
2d73656b RM |
556 | sparcv9v) |
557 | base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9v ;; | |
46ae8850 JJ |
558 | sparcv9v2) |
559 | base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9v2 ;; | |
b1ecbed2 | 560 | sparc64) |
ca34d7a7 | 561 | base_machine=sparc machine=sparc/sparc64 ;; |
b1ecbed2 | 562 | sparc64b) |
bb769ab6 | 563 | base_machine=sparc machine=sparc/sparc64/sparcv9b ;; |
2d73656b RM |
564 | sparc64v) |
565 | base_machine=sparc machine=sparc/sparc64/sparcv9v ;; | |
46ae8850 JJ |
566 | sparc64v2) |
567 | base_machine=sparc machine=sparc/sparc64/sparcv9v2 ;; | |
3a2832a0 | 568 | *) base_machine=$machine ;; |
28f540f4 | 569 | esac |
f0523145 RM |
570 | changequote([,])dnl |
571 | AC_SUBST(base_machine) | |
28f540f4 | 572 | |
dfd2257a UD |
573 | if test "$base_machine" = "i386"; then |
574 | AC_DEFINE(USE_REGPARMS) | |
575 | fi | |
576 | ||
0cae3f4b MF |
577 | # For the multi-arch option we need support in the assembler & linker. |
578 | AC_CACHE_CHECK([for assembler and linker STT_GNU_IFUNC support], | |
579 | libc_cv_ld_gnu_indirect_function, [dnl | |
786b0b67 | 580 | cat > conftest.S <<EOF |
84b9230c | 581 | .type foo,%gnu_indirect_function |
0cae3f4b MF |
582 | foo: |
583 | .globl _start | |
584 | _start: | |
585 | .globl __start | |
586 | __start: | |
587 | .data | |
786b0b67 AS |
588 | #ifdef _LP64 |
589 | .quad foo | |
590 | #else | |
0cae3f4b | 591 | .long foo |
786b0b67 | 592 | #endif |
84b9230c | 593 | EOF |
0cae3f4b MF |
594 | libc_cv_ld_gnu_indirect_function=no |
595 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
596 | -nostartfiles -nostdlib \ | |
786b0b67 | 597 | -o conftest conftest.S 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
0cae3f4b MF |
598 | # Do a link to see if the backend supports IFUNC relocs. |
599 | $READELF -r conftest 1>&AS_MESSAGE_LOG_FD | |
600 | LC_ALL=C $READELF -r conftest | grep 'no relocations' >/dev/null || { | |
601 | libc_cv_ld_gnu_indirect_function=yes | |
602 | } | |
84b9230c MF |
603 | fi |
604 | rm -f conftest*]) | |
605 | ||
606 | AC_MSG_CHECKING(whether .text pseudo-op must be used) | |
607 | AC_CACHE_VAL(libc_cv_dot_text, [dnl | |
608 | cat > conftest.s <<EOF | |
609 | .text | |
610 | EOF | |
611 | libc_cv_dot_text= | |
612 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
613 | libc_cv_dot_text=.text | |
614 | fi | |
615 | rm -f conftest*]) | |
616 | if test -z "$libc_cv_dot_text"; then | |
617 | AC_MSG_RESULT(no) | |
618 | else | |
619 | AC_MSG_RESULT(yes) | |
620 | fi | |
621 | ||
0cae3f4b | 622 | if test x"$libc_cv_ld_gnu_indirect_function" != xyes; then |
84b9230c MF |
623 | if test x"$multi_arch" = xyes; then |
624 | AC_MSG_ERROR([--enable-multi-arch support requires assembler and linker support]) | |
625 | else | |
626 | multi_arch=no | |
627 | fi | |
628 | fi | |
629 | if test x"$multi_arch" != xno; then | |
630 | multi_arch_d=/multiarch | |
631 | fi | |
632 | ||
f0523145 | 633 | # Compute the list of sysdep directories for this configuration. |
f332db02 | 634 | # This can take a while to compute. |
f0523145 | 635 | sysdep_dir=$srcdir/sysdeps |
f332db02 | 636 | AC_MSG_CHECKING(sysdep dirs) |
f0523145 RM |
637 | dnl We need to use [ and ] for other purposes for a while now. |
638 | changequote(,)dnl | |
28f540f4 RM |
639 | # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1. |
640 | os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`" | |
641 | ||
b22d21b3 | 642 | test "x$base_os" != x || case "$os" in |
28f540f4 RM |
643 | gnu*) |
644 | base_os=mach/hurd ;; | |
2ce4f015 | 645 | linux*) |
28f540f4 | 646 | base_os=unix/sysv ;; |
28f540f4 RM |
647 | esac |
648 | ||
649 | # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos. | |
650 | tail=$os | |
651 | ostry=$os | |
652 | while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do | |
653 | ostry="$ostry /$o" | |
654 | tail=$o | |
75914335 | 655 | done |
28f540f4 RM |
656 | o=`echo $tail | sed 's/[0-9]*$//'` |
657 | if test $o != $tail; then | |
658 | ostry="$ostry /$o" | |
659 | fi | |
ec4b0518 UD |
660 | # For linux-gnu, try linux-gnu, then linux. |
661 | o=`echo $tail | sed 's/-.*$//'` | |
662 | if test $o != $tail; then | |
663 | ostry="$ostry /$o" | |
664 | fi | |
28f540f4 RM |
665 | |
666 | # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix. | |
667 | base= | |
668 | tail=$base_os | |
669 | while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do | |
670 | set $b | |
671 | base="$base /$1" | |
672 | tail="$2" | |
673 | done | |
674 | ||
ae6b8730 | 675 | # For sparc/sparc32, try sparc/sparc32 and then sparc. |
28f540f4 | 676 | mach= |
2ceaa76a | 677 | tail=$machine${submachine:+/$submachine} |
28f540f4 RM |
678 | while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do |
679 | set $m | |
10ceac89 RM |
680 | # Prepend the machine's FPU directory unless --without-fp. |
681 | if test "$with_fp" = yes; then | |
682 | mach="$mach /$1/fpu" | |
f4b07664 RM |
683 | else |
684 | mach="$mach /$1/nofpu" | |
82d00cab | 685 | fi |
28f540f4 RM |
686 | mach="$mach /$1" |
687 | tail="$2" | |
688 | done | |
689 | ||
690 | dnl We are done with glob and regexp uses of [ and ]; return to autoconf. | |
691 | changequote([,])dnl | |
692 | ||
693 | # Find what sysdep directories exist. | |
e0a3ed4f | 694 | sysnames_add_ons= |
28f540f4 | 695 | sysnames= |
4b69abad RM |
696 | for b in $base ''; do |
697 | for m0 in $mach ''; do | |
698 | for v in /$vendor ''; do | |
699 | test "$v" = / && continue | |
700 | for o in /$ostry ''; do | |
701 | test "$o" = / && continue | |
425ce2ed | 702 | for m in $multi_arch_d $mach ''; do |
4b69abad | 703 | for d in $add_ons_pfx ''; do |
8f73811b | 704 | for a in $add_ons_sfx ''; do |
e0a3ed4f | 705 | if test -n "$m0$m0sub$b$v$o$m$msub"; then |
77e8bddf AS |
706 | try_srcdir="${srcdir}/" |
707 | case "$d" in | |
e0a3ed4f RM |
708 | /*) try_srcdir= ;; |
709 | esac | |
4b69abad | 710 | try="${d}sysdeps$m0$m0sub$b$v$o$m$msub$a" |
8f73811b RM |
711 | test -n "$enable_debug_configure" && |
712 | echo "$0 [DEBUG]: try $try" >&2 | |
e0a3ed4f | 713 | if test -d "$try_srcdir$try"; then |
8f73811b RM |
714 | sysnames="$sysnames $try" |
715 | { test -n "$o" || test -n "$b"; } && os_used=t | |
716 | { test -n "$m" || test -n "$m0"; } && machine_used=t | |
4b69abad RM |
717 | case x${m0:-$m} in |
718 | x*/$submachine) submachine_used=t ;; | |
719 | esac | |
e0a3ed4f RM |
720 | if test -n "$d"; then |
721 | case "$sysnames_add_ons" in | |
722 | *" $d "*) ;; | |
723 | *|'') sysnames_add_ons="$sysnames_add_ons $d" ;; | |
724 | esac | |
725 | fi | |
8f73811b | 726 | fi |
57ba7bb4 | 727 | fi |
8f73811b | 728 | done |
57ba7bb4 | 729 | done |
28f540f4 RM |
730 | done |
731 | done | |
732 | done | |
733 | done | |
4b69abad | 734 | done |
28f540f4 | 735 | |
6f89d2f3 L |
736 | # If the assembler supports gnu_indirect_function symbol type and the |
737 | # architecture supports multi-arch, we enable multi-arch by default. | |
84b9230c MF |
738 | case $sysnames_add_ons$sysnames in |
739 | *"$multi_arch_d"*) | |
740 | ;; | |
741 | *) | |
77e8bddf | 742 | test x"$multi_arch" = xdefault && multi_arch=no |
84b9230c MF |
743 | ;; |
744 | esac | |
745 | if test x"$multi_arch" != xno; then | |
6f89d2f3 L |
746 | AC_DEFINE(USE_MULTIARCH) |
747 | fi | |
748 | AC_SUBST(multi_arch) | |
749 | ||
28f540f4 RM |
750 | if test -z "$os_used" && test "$os" != none; then |
751 | AC_MSG_ERROR(Operating system $os is not supported.) | |
752 | fi | |
753 | if test -z "$machine_used" && test "$machine" != none; then | |
754 | AC_MSG_ERROR(The $machine is not supported.) | |
755 | fi | |
2ceaa76a RM |
756 | if test -z "$submachine_used" && test -n "$submachine"; then |
757 | AC_MSG_ERROR(The $submachine subspecies of $host_cpu is not supported.) | |
758 | fi | |
759 | AC_SUBST(submachine) | |
28f540f4 RM |
760 | |
761 | # We have now validated the configuration. | |
762 | ||
28f540f4 RM |
763 | # Expand the list of system names into a full list of directories |
764 | # from each element's parent name and Implies file (if present). | |
765 | set $sysnames | |
e50ec9f9 | 766 | names= |
28f540f4 RM |
767 | while test $# -gt 0; do |
768 | name=$1 | |
769 | shift | |
770 | ||
e50ec9f9 | 771 | case " $names " in *" $name "*) |
f332db02 RM |
772 | # Already in the list. |
773 | continue | |
e50ec9f9 | 774 | esac |
f332db02 RM |
775 | |
776 | # Report each name as we discover it, so there is no long pause in output. | |
0b4ee387 | 777 | echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD |
f332db02 | 778 | |
57ba7bb4 UD |
779 | name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'` |
780 | ||
781 | case $name in | |
782 | /*) xsrcdir= ;; | |
783 | *) xsrcdir=$srcdir/ ;; | |
784 | esac | |
785 | test -n "$enable_debug_configure" && | |
786 | echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2 | |
787 | ||
ba75122d RM |
788 | for implies_file in Implies Implies-before Implies-after; do |
789 | implies_type=`echo $implies_file | sed s/-/_/` | |
790 | eval ${implies_type}= | |
791 | if test -f $xsrcdir$name/$implies_file; then | |
792 | # Collect more names from the `Implies' file (removing comments). | |
793 | implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/$implies_file`" | |
794 | for x in $implied_candidate; do | |
795 | found=no | |
796 | if test -d $xsrcdir$name_base/$x; then | |
797 | eval "${implies_type}=\"\$${implies_type} \$name_base/\$x\"" | |
636ccfc8 | 798 | found=yes |
ba75122d RM |
799 | fi |
800 | for d in $add_ons_pfx ''; do | |
801 | try="${d}sysdeps/$x" | |
802 | case $d in | |
803 | /*) try_srcdir= ;; | |
804 | *) try_srcdir=$srcdir/ ;; | |
e0a3ed4f | 805 | esac |
ba75122d RM |
806 | test -n "$enable_debug_configure" && |
807 | echo "[DEBUG]: $name $implies_file $x try($d) {$try_srcdir}$try" >&2 | |
808 | if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try; | |
809 | then | |
810 | eval "${implies_type}=\"\$${implies_type} \$try\"" | |
811 | found=yes | |
812 | case "$sysnames_add_ons" in | |
813 | *" $d "*) ;; | |
814 | *|'') sysnames_add_ons="$sysnames_add_ons $d" ;; | |
815 | esac | |
816 | fi | |
817 | done | |
818 | if test $found = no; then | |
819 | AC_MSG_WARN($name/$implies_file specifies nonexistent $x) | |
636ccfc8 UD |
820 | fi |
821 | done | |
ba75122d RM |
822 | fi |
823 | done | |
28f540f4 RM |
824 | |
825 | # Add NAME to the list of names. | |
826 | names="$names $name" | |
827 | ||
828 | # Find the parent of NAME, using the empty string if it has none. | |
829 | changequote(,)dnl | |
57ba7bb4 | 830 | parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`" |
28f540f4 RM |
831 | changequote([,])dnl |
832 | ||
ba75122d RM |
833 | test -n "$enable_debug_configure" && |
834 | echo "[DEBUG]: $name Implies='$Implies' rest='$*' parent='$parent' \ | |
57633811 | 835 | Implies_before='$Implies_before' Implies_after='$Implies_after'" >&2 |
ba75122d | 836 | |
28f540f4 RM |
837 | # Add the names implied by NAME, and NAME's parent (if it has one), to |
838 | # the list of names to be processed (the argument list). We prepend the | |
839 | # implied names to the list and append the parent. We want implied | |
840 | # directories to come before further directories inferred from the | |
841 | # configuration components; this ensures that for sysv4, unix/common | |
842 | # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*) | |
843 | # after sysv4). | |
ba75122d | 844 | sysnames="`echo $Implies $* $Implies_before $parent $Implies_after`" |
28f540f4 RM |
845 | test -n "$sysnames" && set $sysnames |
846 | done | |
847 | ||
848 | # Add the default directories. | |
83ef87ba | 849 | default_sysnames="sysdeps/generic" |
ecdc196c | 850 | sysnames="$names $default_sysnames" |
f332db02 RM |
851 | AC_SUBST(sysnames) |
852 | # The other names were emitted during the scan. | |
ecdc196c | 853 | AC_MSG_RESULT($default_sysnames) |
28f540f4 | 854 | |
e0a3ed4f RM |
855 | # Collect the list of add-ons that supply partial sysdeps trees. |
856 | sysdeps_add_ons= | |
857 | for add_on in $add_ons; do | |
858 | case "$add_on" in | |
859 | /*) xsrcdir= ;; | |
860 | *) xsrcdir="$srcdir/" ;; | |
861 | esac | |
862 | ||
863 | test -d "$xsrcdir$add_on/sysdeps" || { | |
864 | case "$configured_add_ons " in | |
865 | *" $add_on "*) ;; | |
866 | *|'') | |
867 | AC_MSG_ERROR(add-on $add_on has no configure fragment or sysdeps tree) | |
868 | ;; | |
869 | esac | |
870 | continue | |
871 | } | |
872 | ||
873 | sysdeps_add_ons="$sysdeps_add_ons $add_on" | |
874 | case "$sysnames_add_ons" in | |
875 | *" $add_on/ "*) ;; | |
876 | *|'') | |
877 | AC_MSG_WARN(add-on $add_on contributed no sysdeps directories) | |
878 | continue ;; | |
879 | esac | |
880 | ||
881 | found=no | |
882 | for d in $sysnames; do | |
883 | case "$d" in | |
884 | $add_on/sysdeps/*) ;; | |
885 | *) continue ;; | |
886 | esac | |
887 | (cd "$xsrcdir$d" && for f in *[[!~]]; do | |
888 | case "$f" in | |
889 | sys|bits) | |
890 | for ff in $f/*.h; do | |
891 | test -d "$ff" || { test -e "$ff" && exit 88; } | |
892 | done | |
893 | ;; | |
894 | *) | |
77e8bddf | 895 | test -d "$f" || { test -e "$f" && exit 88; } |
e0a3ed4f RM |
896 | ;; |
897 | esac | |
898 | done) | |
899 | if test $? -eq 88; then | |
900 | found=yes | |
901 | break | |
902 | fi | |
903 | done | |
904 | if test $found = no; then | |
905 | AC_MSG_WARN(add-on $add_on contributed no useful sysdeps directories) | |
906 | fi | |
907 | done | |
908 | AC_SUBST(sysdeps_add_ons) | |
909 | ||
f332db02 RM |
910 | |
911 | ### Locate tools. | |
28f540f4 | 912 | |
28f540f4 | 913 | AC_PROG_INSTALL |
2b80a372 | 914 | if test "$INSTALL" = "${srcdir}/scripts/install-sh -c"; then |
28f540f4 | 915 | # The makefiles need to use a different form to find it in $srcdir. |
2b80a372 | 916 | INSTALL='\$(..)./scripts/install-sh -c' |
28f540f4 | 917 | fi |
0e3426bb | 918 | AC_PROG_LN_S |
ae828bc6 | 919 | |
4baa087a RM |
920 | LIBC_PROG_BINUTILS |
921 | AC_SUBST(MIG)dnl Needed by sysdeps/mach/configure.in | |
922 | ||
bec039bc | 923 | # Accept binutils 2.20 or newer. |
4baa087a RM |
924 | AC_CHECK_PROG_VER(AS, $AS, --version, |
925 | [GNU assembler.* \([0-9]*\.[0-9.]*\)], | |
bec039bc | 926 | [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 |
927 | AC_CHECK_PROG_VER(LD, $LD, --version, |
928 | [GNU ld.* \([0-9][0-9]*\.[0-9.]*\)], | |
bec039bc | 929 | [2.1[0-9][0-9]*|2.[2-9][0-9]*|[3-9].*|[1-9][0-9]*], LD=: critic_missing="$critic_missing ld") |
4baa087a | 930 | |
63bda0c1 | 931 | # These programs are version sensitive. |
3a12e572 | 932 | AC_CHECK_TOOL_PREFIX |
4bca4c17 | 933 | AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v, |
0e7727f7 | 934 | [version \([egcygnustpi-]*[0-9.]*\)], [4.[3-9].* | 4.[1-9][0-9].* | [5-9].* ], |
90d1d40b | 935 | critic_missing="$critic_missing gcc") |
22e65f8f | 936 | AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version, |
8fc1e2ca | 937 | [GNU Make[^0-9]*\([0-9][0-9.]*\)], |
6b4e880f | 938 | [3.79* | 3.[89]*], critic_missing="$critic_missing make") |
63bda0c1 | 939 | |
22e65f8f | 940 | AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version, |
bdd421cc | 941 | [GNU gettext.* \([0-9]*\.[0-9.]*\)], |
aefdff34 RM |
942 | [0.10.3[6-9]* | 0.10.[4-9][0-9]* | 0.1[1-9]* | 0.[2-9][0-9]* | [1-9].*], |
943 | MSGFMT=: aux_missing="$aux_missing msgfmt") | |
63bda0c1 | 944 | AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, |
8b7fb588 | 945 | [GNU texinfo.* \([0-9][0-9.]*\)], |
6a3951a0 | 946 | [4.[5-9]*|4.[1-9][0-9]*|[5-9].*], |
aefdff34 | 947 | MAKEINFO=: aux_missing="$aux_missing makeinfo") |
d6a97a28 | 948 | AC_CHECK_PROG_VER(SED, sed, --version, |
07e51550 | 949 | [GNU sed[^0-9]* \([0-9]*\.[0-9.]*\)], |
aefdff34 RM |
950 | [3.0[2-9]*|3.[1-9]*|[4-9]*], |
951 | SED=: aux_missing="$aux_missing sed") | |
0786794f AM |
952 | AC_CHECK_PROG_VER(AWK, gawk, --version, |
953 | [GNU Awk[^0-9]*\([0-9][0-9.]*\)], | |
954 | [[3-9].*], critic_missing="$critic_missing gawk") | |
63bda0c1 | 955 | |
30b99d79 | 956 | AC_CHECK_TOOL(NM, nm, false) |
d30cf5bb | 957 | |
476e7d78 RM |
958 | AC_CHECK_PROGS(AUTOCONF, autoconf, no) |
959 | case "x$AUTOCONF" in | |
960 | xno|x|x:) AUTOCONF=no ;; | |
961 | *) | |
962 | AC_CACHE_CHECK(dnl | |
1400de2e | 963 | whether $AUTOCONF${ACFLAGS:+ }$ACFLAGS works, libc_cv_autoconf_works, [dnl |
476e7d78 RM |
964 | if (cd $srcdir; $AUTOCONF $ACFLAGS configure.in > /dev/null 2>&1); then |
965 | libc_cv_autoconf_works=yes | |
966 | else | |
967 | libc_cv_autoconf_works=no | |
968 | fi]) | |
969 | test $libc_cv_autoconf_works = yes || AUTOCONF=no | |
970 | ;; | |
971 | esac | |
92963737 | 972 | if test "x$AUTOCONF" = xno; then |
476e7d78 | 973 | aux_missing="$aux_missing autoconf" |
14519931 | 974 | fi |
1400de2e | 975 | |
32a448ed RM |
976 | test -n "$critic_missing" && AC_MSG_ERROR([ |
977 | *** These critical programs are missing or too old:$critic_missing | |
978 | *** Check the INSTALL file for required versions.]) | |
979 | ||
4bca4c17 | 980 | test -n "$aux_missing" && AC_MSG_WARN([ |
9c6fffc0 | 981 | *** These auxiliary programs are missing or incompatible versions:$aux_missing |
63bda0c1 UD |
982 | *** some features will be disabled. |
983 | *** Check the INSTALL file for required versions.]) | |
28f540f4 | 984 | |
dbe7a0f5 UD |
985 | # if using special system headers, find out the compiler's sekrit |
986 | # header directory and add that to the list. NOTE: Only does the right | |
987 | # thing on a system that doesn't need fixincludes. (Not presently a problem.) | |
988 | if test -n "$sysheaders"; then | |
67fbfa5c RM |
989 | SYSINCLUDES=-nostdinc |
990 | for d in include include-fixed; do | |
991 | i=`$CC -print-file-name="$d"` && test "x$i" != x && test "x$i" != "x$d" && | |
992 | SYSINCLUDES="$SYSINCLUDES -isystem $i" | |
993 | done | |
994 | SYSINCLUDES="$SYSINCLUDES \ | |
3d6ce23a | 995 | -isystem `echo $sysheaders | sed 's/:/ -isystem /g'`" |
ef226fec | 996 | if test -n "$CXX"; then |
7872cfb0 | 997 | CXX_SYSINCLUDES= |
ef226fec | 998 | cxxmachine=`$CXX -dumpmachine 2>&AS_MESSAGE_LOG_FD` && |
1e4a9536 JM |
999 | cxxheaders=`$CXX -v -S -x c++ /dev/null -o /dev/null 2>&1 \ |
1000 | | sed -n -e '1,/#include/d' -e '/^ \//{p;q;}' | sed 's/ //'` | |
c4e85184 AM |
1001 | test "x$cxxheaders" != x && test "x$i" != "x$cxxheaders" && |
1002 | CXX_SYSINCLUDES="$CXX_SYSINCLUDES -isystem $cxxheaders \ | |
ef226fec RM |
1003 | -isystem $cxxheaders/$cxxmachine -isystem $cxxheaders/backward" |
1004 | fi | |
dbe7a0f5 UD |
1005 | fi |
1006 | AC_SUBST(SYSINCLUDES) | |
ef226fec | 1007 | AC_SUBST(CXX_SYSINCLUDES) |
dbe7a0f5 | 1008 | |
3911660e UD |
1009 | # Test if LD_LIBRARY_PATH contains the notation for the current directory |
1010 | # since this would lead to problems installing/building glibc. | |
1011 | # LD_LIBRARY_PATH contains the current directory if one of the following | |
1012 | # is true: | |
1013 | # - one of the terminals (":" and ";") is the first or last sign | |
1014 | # - two terminals occur directly after each other | |
1015 | # - the path contains an element with a dot in it | |
1016 | AC_MSG_CHECKING(LD_LIBRARY_PATH variable) | |
1017 | changequote(,)dnl | |
1018 | case ${LD_LIBRARY_PATH} in | |
1019 | [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) | |
b3a86ae1 | 1020 | ld_library_path_setting="contains current directory" |
3911660e UD |
1021 | ;; |
1022 | *) | |
1023 | ld_library_path_setting="ok" | |
1024 | ;; | |
1025 | esac | |
1026 | changequote([,])dnl | |
1027 | AC_MSG_RESULT($ld_library_path_setting) | |
1028 | if test "$ld_library_path_setting" != "ok"; then | |
63bda0c1 UD |
1029 | AC_MSG_ERROR([ |
1030 | *** LD_LIBRARY_PATH shouldn't contain the current directory when | |
1031 | *** building glibc. Please change the environment variable | |
1032 | *** and run configure again.]) | |
3911660e | 1033 | fi |
8e31cf7e | 1034 | |
74bd2300 | 1035 | AC_CACHE_CHECK(whether GCC supports -static-libgcc, libc_cv_gcc_static_libgcc, [dnl |
8175a253 | 1036 | if $CC -v -static-libgcc 2>&1 | grep 'unrecognized option.*static-libgcc' >/dev/null; then |
74bd2300 UD |
1037 | libc_cv_gcc_static_libgcc= |
1038 | else | |
1039 | libc_cv_gcc_static_libgcc=-static-libgcc | |
1040 | fi]) | |
1041 | AC_SUBST(libc_cv_gcc_static_libgcc) | |
1042 | ||
26f56c1c UD |
1043 | AC_PATH_PROG(BASH_SHELL, bash, no) |
1044 | if test "$BASH_SHELL" != no && | |
1045 | $BASH_SHELL -c 'test "$BASH_VERSINFO" \ | |
6973fc01 | 1046 | && test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then |
84384f5b UD |
1047 | libc_cv_have_bash2=yes |
1048 | else | |
1049 | libc_cv_have_bash2=no | |
1050 | fi | |
1051 | AC_SUBST(libc_cv_have_bash2) | |
1052 | ||
5290baf0 | 1053 | dnl We need a ksh compatible shell for tzselect. |
26f56c1c | 1054 | if test "$BASH_SHELL" = no; then |
5290baf0 UD |
1055 | AC_PATH_PROG(KSH, ksh, no) |
1056 | if test "$KSH" = no; then | |
1057 | libc_cv_have_ksh=no | |
1058 | else | |
1059 | libc_cv_have_ksh=yes | |
1060 | fi | |
1061 | else | |
26f56c1c | 1062 | KSH="$BASH_SHELL" |
5290baf0 UD |
1063 | AC_SUBST(KSH) |
1064 | libc_cv_have_ksh=yes | |
1065 | fi | |
1066 | AC_SUBST(libc_cv_have_ksh) | |
1067 | ||
c0016081 | 1068 | AC_PATH_PROG(PERL, perl, no) |
2fd5d029 RM |
1069 | if test "$PERL" != no && |
1070 | (eval `$PERL -V:apiversion`; test `expr "$apiversion" \< 5` -ne 0); then | |
1071 | PERL=no | |
ecb06196 | 1072 | fi |
2f512715 AS |
1073 | AC_PATH_PROG(INSTALL_INFO, install-info, no, |
1074 | $PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin) | |
2de00372 UD |
1075 | AC_PATH_PROG(BISON, bison, no, $PATH:/usr/local/bin:/usr/bin:/bin) |
1076 | ||
b8dc6a10 | 1077 | AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl |
28f540f4 RM |
1078 | AC_TRY_COMPILE(dnl |
1079 | [#define __need_size_t | |
1080 | #define __need_wchar_t | |
1081 | #include <stddef.h> | |
1082 | #define __need_NULL | |
1083 | #include <stddef.h>], [size_t size; wchar_t wchar; | |
1084 | #ifdef offsetof | |
1085 | #error stddef.h ignored __need_* | |
1086 | #endif | |
1087 | if (&size == NULL || &wchar == NULL) abort ();], | |
77e8bddf AS |
1088 | libc_cv_friendly_stddef=yes, |
1089 | libc_cv_friendly_stddef=no)]) | |
28f540f4 RM |
1090 | if test $libc_cv_friendly_stddef = yes; then |
1091 | config_vars="$config_vars | |
1092 | override stddef.h = # The installed <stddef.h> seems to be libc-friendly." | |
1093 | fi | |
1094 | ||
b8dc6a10 RM |
1095 | AC_CACHE_CHECK(whether we need to use -P to assemble .S files, |
1096 | libc_cv_need_minus_P, [dnl | |
28f540f4 RM |
1097 | cat > conftest.S <<EOF |
1098 | #include "confdefs.h" | |
1099 | /* Nothing whatsoever. */ | |
1100 | EOF | |
3217788f | 1101 | if AC_TRY_COMMAND(${CC-cc} $CPPFLAGS $ASFLAGS -c conftest.S 1>&AS_MESSAGE_LOG_FD); then |
28f540f4 RM |
1102 | libc_cv_need_minus_P=no |
1103 | else | |
1104 | libc_cv_need_minus_P=yes | |
1105 | fi | |
1106 | rm -f conftest*]) | |
28f540f4 RM |
1107 | if test $libc_cv_need_minus_P = yes; then |
1108 | config_vars="$config_vars | |
1109 | asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives." | |
1110 | fi | |
1111 | ||
b8dc6a10 | 1112 | AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl |
9a70fcab | 1113 | cat > conftest.s <<EOF |
2293395f | 1114 | ${libc_cv_dot_text} |
ae1025be | 1115 | foo: |
df2a0c93 | 1116 | .set glibc_conftest_frobozz,foo |
7b8e0d49 | 1117 | .globl glibc_conftest_frobozz |
e215c478 | 1118 | EOF |
df2a0c93 RM |
1119 | # The alpha-dec-osf1 assembler gives only a warning for `.set' |
1120 | # (but it doesn't work), so we must do a linking check to be sure. | |
1121 | cat > conftest1.c <<\EOF | |
1122 | extern int glibc_conftest_frobozz; | |
640f0119 | 1123 | void _start() { glibc_conftest_frobozz = 1; } |
df2a0c93 RM |
1124 | EOF |
1125 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
640f0119 | 1126 | -nostartfiles -nostdlib \ |
0b4ee387 | 1127 | -o conftest conftest.s conftest1.c 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
e215c478 RM |
1128 | libc_cv_asm_set_directive=yes |
1129 | else | |
1130 | libc_cv_asm_set_directive=no | |
1131 | fi | |
65b3cbcb | 1132 | rm -f conftest*]) |
e215c478 RM |
1133 | if test $libc_cv_asm_set_directive = yes; then |
1134 | AC_DEFINE(HAVE_ASM_SET_DIRECTIVE) | |
1135 | fi | |
1136 | ||
415ac3df UD |
1137 | AC_CACHE_CHECK(for assembler gnu_unique_object symbol type, |
1138 | libc_cv_asm_unique_object, [dnl | |
1139 | cat > conftest.s <<EOF | |
1140 | ${libc_cv_dot_text} | |
1141 | _sym: | |
b67e9372 | 1142 | .type _sym, %gnu_unique_object |
415ac3df UD |
1143 | EOF |
1144 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then | |
1145 | libc_cv_asm_unique_object=yes | |
1146 | else | |
1147 | libc_cv_asm_unique_object=no | |
1148 | fi | |
1149 | rm -f conftest*]) | |
1150 | if test $libc_cv_asm_unique_object = yes; then | |
1151 | AC_DEFINE(HAVE_ASM_UNIQUE_OBJECT) | |
1152 | fi | |
1153 | ||
377a515b UD |
1154 | AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive, |
1155 | [cat > conftest.s <<EOF | |
2293395f | 1156 | ${libc_cv_dot_text} |
4cca6b86 | 1157 | _sym: |
377a515b UD |
1158 | .symver _sym,sym@VERS |
1159 | EOF | |
3217788f | 1160 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
377a515b UD |
1161 | libc_cv_asm_symver_directive=yes |
1162 | else | |
1163 | libc_cv_asm_symver_directive=no | |
1164 | fi | |
1165 | rm -f conftest*]) | |
1166 | AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl | |
1167 | if test $libc_cv_asm_symver_directive = yes; then | |
1168 | cat > conftest.s <<EOF | |
2293395f | 1169 | ${libc_cv_dot_text} |
4cca6b86 | 1170 | _sym: |
377a515b UD |
1171 | .symver _sym,sym@VERS |
1172 | EOF | |
1173 | cat > conftest.map <<EOF | |
f43ce637 | 1174 | VERS_1 { |
377a515b UD |
1175 | global: sym; |
1176 | }; | |
f43ce637 UD |
1177 | |
1178 | VERS_2 { | |
77e8bddf | 1179 | global: sym; |
f43ce637 | 1180 | } VERS_1; |
377a515b | 1181 | EOF |
3217788f RM |
1182 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
1183 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $LDFLAGS -shared | |
1184 | -o conftest.so conftest.o | |
1185 | -nostartfiles -nostdlib | |
1186 | -Wl,--version-script,conftest.map | |
c2f55635 | 1187 | 1>&AS_MESSAGE_LOG_FD]); |
377a515b UD |
1188 | then |
1189 | libc_cv_ld_version_script_option=yes | |
1190 | else | |
1191 | libc_cv_ld_version_script_option=no | |
1192 | fi | |
1193 | else | |
1194 | libc_cv_ld_version_script_option=no | |
1195 | fi | |
1196 | else | |
1197 | libc_cv_ld_version_script_option=no | |
1198 | fi | |
1199 | rm -f conftest*]) | |
7499a22a RM |
1200 | if test $shared != no && |
1201 | test $libc_cv_asm_symver_directive = yes && | |
650425ce UD |
1202 | test $libc_cv_ld_version_script_option = yes && |
1203 | test $enable_versioning = yes; then | |
377a515b UD |
1204 | VERSIONING=yes |
1205 | AC_DEFINE(DO_VERSIONING) | |
1206 | else | |
1207 | VERSIONING=no | |
1208 | fi | |
1209 | AC_SUBST(VERSIONING) | |
1210 | ||
a0da5fe1 | 1211 | if test $shared != no && test $VERSIONING = no; then |
f43ce637 | 1212 | echo "\ |
f4017d20 | 1213 | *** WARNING: You should not compile GNU libc without versioning. Not using |
f43ce637 UD |
1214 | *** versioning will introduce incompatibilities so that old binaries |
1215 | *** will not run anymore. | |
50304ef0 | 1216 | *** For versioning you need recent binutils (binutils-2.8.1.0.23 or newer)." |
f43ce637 | 1217 | fi |
a0da5fe1 UD |
1218 | AC_CACHE_CHECK(for .previous assembler directive, |
1219 | libc_cv_asm_previous_directive, [dnl | |
1220 | cat > conftest.s <<EOF | |
fd26970f UD |
1221 | .section foo_section |
1222 | .previous | |
a0da5fe1 UD |
1223 | EOF |
1224 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
1225 | libc_cv_asm_previous_directive=yes | |
1226 | else | |
1227 | libc_cv_asm_previous_directive=no | |
1228 | fi | |
1229 | rm -f conftest*]) | |
1230 | if test $libc_cv_asm_previous_directive = yes; then | |
1231 | AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE) | |
1232 | else | |
1233 | AC_CACHE_CHECK(for .popsection assembler directive, | |
1234 | libc_cv_asm_popsection_directive, [dnl | |
1235 | cat > conftest.s <<EOF | |
1236 | .pushsection foo_section | |
1237 | .popsection | |
fd26970f | 1238 | EOF |
3217788f | 1239 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then |
a0da5fe1 | 1240 | libc_cv_asm_popsection_directive=yes |
fd26970f | 1241 | else |
a0da5fe1 | 1242 | libc_cv_asm_popsection_directive=no |
fd26970f UD |
1243 | fi |
1244 | rm -f conftest*]) | |
a0da5fe1 UD |
1245 | if test $libc_cv_asm_popsection_directive = yes; then |
1246 | AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE) | |
fd26970f | 1247 | fi |
a0da5fe1 UD |
1248 | fi |
1249 | AC_CACHE_CHECK(for .protected and .hidden assembler directive, | |
1250 | libc_cv_asm_protected_directive, [dnl | |
1251 | cat > conftest.s <<EOF | |
2d499f55 UD |
1252 | .protected foo |
1253 | foo: | |
1254 | .hidden bar | |
1255 | bar: | |
1256 | EOF | |
a0da5fe1 UD |
1257 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then |
1258 | libc_cv_asm_protected_directive=yes | |
1259 | else | |
1260 | AC_MSG_ERROR(assembler support for symbol visibility is required) | |
1261 | fi | |
1262 | rm -f conftest*]) | |
0fb7851f | 1263 | |
a0da5fe1 UD |
1264 | if test $libc_cv_asm_protected_directive = yes; then |
1265 | AC_CACHE_CHECK(whether __attribute__((visibility())) is supported, | |
0d01dace UD |
1266 | libc_cv_visibility_attribute, |
1267 | [cat > conftest.c <<EOF | |
1268 | int foo __attribute__ ((visibility ("hidden"))) = 1; | |
1269 | int bar __attribute__ ((visibility ("protected"))) = 1; | |
1270 | EOF | |
1271 | libc_cv_visibility_attribute=no | |
61cea1c3 | 1272 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then |
0d01dace UD |
1273 | if grep '\.hidden.*foo' conftest.s >/dev/null; then |
1274 | if grep '\.protected.*bar' conftest.s >/dev/null; then | |
1275 | libc_cv_visibility_attribute=yes | |
1276 | fi | |
1277 | fi | |
1278 | fi | |
f7d82dc9 | 1279 | rm -f conftest.{c,s} |
0d01dace | 1280 | ]) |
a0da5fe1 UD |
1281 | if test $libc_cv_visibility_attribute != yes; then |
1282 | AC_MSG_ERROR(compiler support for visibility attribute is required) | |
0d01dace | 1283 | fi |
a0da5fe1 | 1284 | fi |
0d01dace | 1285 | |
a0da5fe1 UD |
1286 | if test $libc_cv_visibility_attribute = yes; then |
1287 | AC_CACHE_CHECK(for broken __attribute__((visibility())), | |
37ba7d66 UD |
1288 | libc_cv_broken_visibility_attribute, |
1289 | [cat > conftest.c <<EOF | |
1290 | int foo (int x); | |
1291 | int bar (int x) __asm__ ("foo") __attribute__ ((visibility ("hidden"))); | |
1292 | int bar (int x) { return x; } | |
1293 | EOF | |
1294 | libc_cv_broken_visibility_attribute=yes | |
f7d82dc9 | 1295 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then |
37ba7d66 UD |
1296 | changequote(,)dnl |
1297 | if grep '\.hidden[ _]foo' conftest.s >/dev/null; then | |
1298 | changequote([,])dnl | |
1299 | libc_cv_broken_visibility_attribute=no | |
1300 | fi | |
1301 | fi | |
1302 | rm -f conftest.c conftest.s | |
1303 | ]) | |
a0da5fe1 UD |
1304 | if test $libc_cv_broken_visibility_attribute = yes; then |
1305 | AC_MSG_ERROR(working compiler support for visibility attribute is required) | |
37ba7d66 | 1306 | fi |
a0da5fe1 | 1307 | fi |
37ba7d66 | 1308 | |
a0da5fe1 UD |
1309 | AC_CACHE_CHECK(for broken __attribute__((alias())), |
1310 | libc_cv_broken_alias_attribute, | |
1311 | [cat > conftest.c <<EOF | |
1312 | extern int foo (int x) __asm ("xyzzy"); | |
1313 | int bar (int x) { return x; } | |
1314 | extern __typeof (bar) foo __attribute ((weak, alias ("bar"))); | |
1315 | extern int dfoo; | |
1316 | extern __typeof (dfoo) dfoo __asm ("abccb"); | |
1317 | int dfoo = 1; | |
37ba7d66 | 1318 | EOF |
a0da5fe1 UD |
1319 | libc_cv_broken_alias_attribute=yes |
1320 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
1321 | if grep 'xyzzy' conftest.s >/dev/null && | |
1322 | grep 'abccb' conftest.s >/dev/null; then | |
1323 | libc_cv_broken_alias_attribute=no | |
1324 | fi | |
1325 | fi | |
1326 | rm -f conftest.c conftest.s | |
1327 | ]) | |
1328 | if test $libc_cv_broken_alias_attribute = yes; then | |
1329 | AC_MSG_ERROR(working alias attribute support required) | |
1330 | fi | |
1331 | ||
1332 | if test $libc_cv_visibility_attribute = yes; then | |
1333 | AC_CACHE_CHECK(whether to put _rtld_local into .sdata section, | |
0d01dace UD |
1334 | libc_cv_have_sdata_section, |
1335 | [echo "int i;" > conftest.c | |
1336 | libc_cv_have_sdata_section=no | |
dbc92dc6 | 1337 | if ${CC-cc} $LDFLAGS -fPIC -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \ |
0d01dace UD |
1338 | | grep '\.sdata' >/dev/null; then |
1339 | libc_cv_have_sdata_section=yes | |
1340 | fi | |
1341 | rm -f conftest.c conftest.so | |
1342 | ]) | |
a0da5fe1 UD |
1343 | if test $libc_cv_have_sdata_section = yes; then |
1344 | AC_DEFINE(HAVE_SDATA_SECTION) | |
0d01dace | 1345 | fi |
a0da5fe1 | 1346 | fi |
0d01dace | 1347 | |
a0da5fe1 UD |
1348 | AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support, |
1349 | libc_cv_initfini_array, [dnl | |
07037eeb | 1350 | LIBC_TRY_LINK_STATIC([ |
5241882c | 1351 | int foo (void) { return 1; } |
2c617417 | 1352 | int (*fp) (void) __attribute__ ((section (".init_array"))) = foo; |
07037eeb JM |
1353 | ], |
1354 | [if $READELF -S conftest | fgrep INIT_ARRAY > /dev/null; then | |
a0da5fe1 | 1355 | libc_cv_initfini_array=yes |
5241882c | 1356 | else |
ce33ee7c | 1357 | libc_cv_initfini_array=no |
07037eeb JM |
1358 | fi], |
1359 | [libc_cv_initfini_array=no]) | |
1360 | ]) | |
a0da5fe1 UD |
1361 | if test $libc_cv_initfini_array != yes; then |
1362 | AC_MSG_ERROR([Need linker with .init_array/.fini_array support.]) | |
1363 | fi | |
62bede13 | 1364 | |
a0da5fe1 UD |
1365 | AC_CACHE_CHECK(whether to use .ctors/.dtors header and trailer, |
1366 | libc_cv_ctors_header, [dnl | |
1367 | libc_cv_ctors_header=yes | |
07037eeb JM |
1368 | LIBC_TRY_LINK_STATIC([ |
1369 | __attribute__ ((constructor)) void ctor (void) { asm (""); } | |
1370 | __attribute__ ((destructor)) void dtor (void) { asm (""); } | |
113ddea4 | 1371 | ], |
a0da5fe1 | 1372 | [dnl |
113ddea4 | 1373 | AS_IF([$READELF -WS conftest$ac_exeext | $AWK ' |
92963737 | 1374 | { gsub(/\@<:@ */, "@<:@") } |
113ddea4 RM |
1375 | $2 == ".ctors" || $2 == ".dtors" { |
1376 | size = strtonum("0x" $6) | |
1377 | align = strtonum("0x" $NF) | |
1378 | seen@<:@$2@:>@ = 1 | |
1379 | stub@<:@$2@:>@ = size == align * 2 | |
92963737 | 1380 | } |
113ddea4 RM |
1381 | END { |
1382 | ctors_ok = !seen@<:@".ctors"@:>@ || stub@<:@".ctors"@:>@ | |
1383 | dtors_ok = !seen@<:@".dtors"@:>@ || stub@<:@".dtors"@:>@ | |
1384 | exit ((ctors_ok && dtors_ok) ? 0 : 1) | |
1385 | } | |
1386 | '], [libc_cv_ctors_header=no]) | |
1387 | ], [dnl | |
1388 | AC_MSG_ERROR([missing __attribute__ ((constructor)) support??]) | |
1389 | ]) | |
a0da5fe1 UD |
1390 | ]) |
1391 | if test $libc_cv_ctors_header = no; then | |
1392 | AC_DEFINE(NO_CTORS_DTORS_SECTIONS) | |
1393 | fi | |
5241882c | 1394 | |
a0da5fe1 UD |
1395 | AC_CACHE_CHECK(for libunwind-support in compiler, |
1396 | libc_cv_cc_with_libunwind, [ | |
1397 | cat > conftest.c <<EOF | |
cbdb12de UD |
1398 | int main (void) { return 0; } |
1399 | EOF | |
a0da5fe1 | 1400 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -static -o conftest \ |
8175a253 | 1401 | conftest.c -v 2>&1 >/dev/null | grep ' -lunwind ' >/dev/null; then |
a0da5fe1 UD |
1402 | libc_cv_cc_with_libunwind=yes |
1403 | else | |
1404 | libc_cv_cc_with_libunwind=no | |
c776b3d7 | 1405 | fi |
a0da5fe1 UD |
1406 | rm -f conftest*]) |
1407 | AC_SUBST(libc_cv_cc_with_libunwind) | |
1408 | if test $libc_cv_cc_with_libunwind = yes; then | |
1409 | AC_DEFINE(HAVE_CC_WITH_LIBUNWIND) | |
1410 | fi | |
c776b3d7 | 1411 | |
a0da5fe1 UD |
1412 | AC_CACHE_CHECK(for -z nodelete option, |
1413 | libc_cv_z_nodelete, [dnl | |
1414 | cat > conftest.c <<EOF | |
0fb7851f UD |
1415 | int _start (void) { return 42; } |
1416 | EOF | |
a0da5fe1 UD |
1417 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
1418 | -fPIC -shared -o conftest.so conftest.c | |
1419 | -nostartfiles -nostdlib | |
1420 | -Wl,--enable-new-dtags,-z,nodelete 1>&AS_MESSAGE_LOG_FD]) | |
1421 | then | |
1422 | libc_cv_z_nodelete=yes | |
1423 | else | |
1424 | AC_MSG_ERROR(linker with -z nodelete support required) | |
1425 | fi | |
1426 | rm -f conftest*]) | |
2f54c82d | 1427 | |
a0da5fe1 UD |
1428 | AC_CACHE_CHECK(for -z nodlopen option, |
1429 | libc_cv_z_nodlopen, [dnl | |
1430 | cat > conftest.c <<EOF | |
2f54c82d UD |
1431 | int _start (void) { return 42; } |
1432 | EOF | |
a0da5fe1 | 1433 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dbc92dc6 | 1434 | -fPIC -shared -o conftest.so conftest.c |
35cd3c97 | 1435 | -nostartfiles -nostdlib |
c2f55635 | 1436 | -Wl,--enable-new-dtags,-z,nodlopen 1>&AS_MESSAGE_LOG_FD]) |
a0da5fe1 UD |
1437 | then |
1438 | libc_cv_z_nodlopen=yes | |
1439 | else | |
1440 | AC_MSG_ERROR(linker with -z nodlopen support required) | |
1441 | fi | |
1442 | rm -f conftest*]) | |
5d916713 | 1443 | |
a0da5fe1 UD |
1444 | AC_CACHE_CHECK(for -z initfirst option, |
1445 | libc_cv_z_initfirst, [dnl | |
1446 | cat > conftest.c <<EOF | |
5d916713 UD |
1447 | int _start (void) { return 42; } |
1448 | EOF | |
a0da5fe1 | 1449 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dbc92dc6 | 1450 | -fPIC -shared -o conftest.so conftest.c |
35cd3c97 | 1451 | -nostartfiles -nostdlib |
c2f55635 | 1452 | -Wl,--enable-new-dtags,-z,initfirst 1>&AS_MESSAGE_LOG_FD]) |
a0da5fe1 UD |
1453 | then |
1454 | libc_cv_z_initfirst=yes | |
1455 | else | |
1456 | AC_MSG_ERROR(linker with -z initfirst support required) | |
1457 | fi | |
1458 | rm -f conftest*]) | |
639c3248 | 1459 | |
a0da5fe1 UD |
1460 | # Add-on fragments can set these for other machines. |
1461 | libc_commonpagesize=${libc_commonpagesize:-no} | |
1462 | libc_relro_required=${libc_relro_required:-no} | |
1463 | case "$base_machine" in | |
1464 | i[[34567]]86 | x86_64 | powerpc* | s390*) | |
1465 | libc_commonpagesize=0x1000 | |
1466 | libc_relro_required=yes | |
1467 | ;; | |
1468 | sparc*) | |
1469 | libc_commonpagesize=0x2000 | |
1470 | libc_relro_required=yes | |
1471 | ;; | |
a0da5fe1 | 1472 | esac |
574920b4 | 1473 | |
a0da5fe1 UD |
1474 | if test $libc_commonpagesize != no; then |
1475 | AC_CACHE_CHECK(for -z relro option, | |
1476 | libc_cv_z_relro, [dnl | |
1477 | libc_cv_z_relro=no | |
1478 | AC_LANG_CONFTEST([AC_LANG_SOURCE([[ | |
574920b4 RM |
1479 | int _start (void) { return 42; } |
1480 | extern void _exit (int); | |
9fa2c032 RM |
1481 | /* Since these pointers are const, they should go in rodata. |
1482 | Since they refer to functions that have to be resolved by | |
1483 | dynamic linking, they should instead go in RELRO data. */ | |
defe9061 | 1484 | const void *const relro[] = { &_start, &_exit, 0 }; |
9fa2c032 RM |
1485 | /* GNU ld fails to produce RELRO data when it's very small and there is no |
1486 | normal writable data following it, or if only uninitialized (.bss) data | |
1487 | follows it, or only very small writable data. */ | |
1488 | int data[0x10000] = { 1, }; | |
574920b4 | 1489 | ]])]) |
a0da5fe1 | 1490 | cat > conftest.awk <<\EOF |
574920b4 RM |
1491 | BEGIN { |
1492 | result = "no" | |
1493 | commonpagesize = strtonum(commonpagesize) | |
1494 | } | |
1495 | { print "LINE:", $0 > "/dev/stderr" } | |
1496 | $1 == "GNU_RELRO" { | |
1497 | vaddr = strtonum($3) | |
1498 | memsz = strtonum($6) | |
1499 | end = vaddr + memsz | |
1500 | printf "vaddr %#x memsz %#x end %#x commonpagesize %#x\n", \ | |
1501 | vaddr, memsz, end, commonpagesize > "/dev/stderr" | |
1502 | result = (end % commonpagesize == 0) ? "yes" : "broken" | |
1503 | } | |
1504 | END { print result } | |
1505 | EOF | |
a0da5fe1 | 1506 | AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
574920b4 RM |
1507 | -fPIC -shared -o conftest.so conftest.c |
1508 | -nostartfiles -nostdlib | |
1509 | -Wl,-z,relro 1>&AS_MESSAGE_LOG_FD]) && | |
a0da5fe1 UD |
1510 | AC_TRY_COMMAND([$READELF -Wl conftest.so > conftest.ph]) && |
1511 | AC_TRY_COMMAND([ | |
574920b4 RM |
1512 | $AWK -v commonpagesize=$libc_commonpagesize -f conftest.awk |
1513 | conftest.ph > conftest.cps | |
1514 | ]) && | |
a0da5fe1 UD |
1515 | libc_cv_z_relro=`cat conftest.cps 2>&AS_MESSAGE_LOG_FD` |
1516 | rm -f conftest*]) | |
1517 | if { test "x$libc_relro_required" = xyes && | |
1518 | test "x$libc_cv_z_relro" != xyes | |
1519 | } | |
1520 | then | |
1521 | AC_MSG_ERROR(linker with -z relro support required) | |
574920b4 | 1522 | fi |
a0da5fe1 UD |
1523 | else |
1524 | AC_MSG_WARN([missing architecture parameter to check for working -z relro]) | |
1525 | fi | |
ed20b3d9 | 1526 | |
a0da5fe1 UD |
1527 | AC_CACHE_CHECK(for -Bgroup option, |
1528 | libc_cv_Bgroup, [dnl | |
1529 | cat > conftest.c <<EOF | |
639c3248 UD |
1530 | int _start (void) { return 42; } |
1531 | EOF | |
a0da5fe1 UD |
1532 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
1533 | -fPIC -shared -o conftest.so conftest.c | |
1534 | -Wl,-Bgroup -nostdlib 1>&AS_MESSAGE_LOG_FD]) | |
1535 | then | |
1536 | libc_cv_Bgroup=yes | |
1537 | else | |
1538 | libc_cv_Bgroup=no | |
1539 | fi | |
1540 | rm -f conftest*]) | |
1541 | AC_SUBST(libc_cv_Bgroup) | |
a711b01d | 1542 | |
a0da5fe1 UD |
1543 | ASFLAGS_config= |
1544 | AC_CACHE_CHECK(whether --noexecstack is desirable for .S files, | |
1545 | libc_cv_as_noexecstack, [dnl | |
1546 | cat > conftest.c <<EOF | |
35915ec8 UD |
1547 | void foo (void) { } |
1548 | EOF | |
a0da5fe1 UD |
1549 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS |
1550 | -S -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD]) \ | |
8175a253 | 1551 | && grep .note.GNU-stack conftest.s >/dev/null \ |
a0da5fe1 UD |
1552 | && AC_TRY_COMMAND([${CC-cc} $ASFLAGS -Wa,--noexecstack |
1553 | -c -o conftest.o conftest.s 1>&AS_MESSAGE_LOG_FD]) | |
1554 | then | |
1555 | libc_cv_as_noexecstack=yes | |
1556 | else | |
1557 | libc_cv_as_noexecstack=no | |
1558 | fi | |
1559 | rm -f conftest*]) | |
1560 | if test $libc_cv_as_noexecstack = yes; then | |
1561 | ASFLAGS_config="$ASFLAGS_config -Wa,--noexecstack" | |
1562 | fi | |
1563 | AC_SUBST(ASFLAGS_config) | |
2abf9ff1 | 1564 | |
a0da5fe1 UD |
1565 | AC_CACHE_CHECK(for -z combreloc, |
1566 | libc_cv_z_combreloc, [dnl | |
1567 | cat > conftest.c <<EOF | |
d555194c UD |
1568 | extern int bar (int); |
1569 | extern int mumble; | |
1570 | int foo (void) { return bar (mumble); } | |
a711b01d | 1571 | EOF |
a0da5fe1 | 1572 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dbc92dc6 | 1573 | -fPIC -shared -o conftest.so conftest.c |
35cd3c97 | 1574 | -nostdlib -nostartfiles |
c2f55635 | 1575 | -Wl,-z,combreloc 1>&AS_MESSAGE_LOG_FD]) |
a0da5fe1 | 1576 | then |
a711b01d UD |
1577 | dnl The following test is a bit weak. We must use a tool which can test |
1578 | dnl cross-platform since the gcc used can be a cross compiler. Without | |
1579 | dnl introducing new options this is not easily doable. Instead use a tool | |
1580 | dnl which always is cross-platform: readelf. To detect whether -z combreloc | |
1581 | dnl look for a section named .rel.dyn. | |
a0da5fe1 UD |
1582 | if $READELF -S conftest.so | grep '\.rel\(a\|\)\.dyn' > /dev/null; then |
1583 | libc_cv_z_combreloc=yes | |
fdde8349 UD |
1584 | else |
1585 | libc_cv_z_combreloc=no | |
a711b01d | 1586 | fi |
a0da5fe1 UD |
1587 | else |
1588 | libc_cv_z_combreloc=no | |
1589 | fi | |
1590 | rm -f conftest*]) | |
1591 | if test "$libc_cv_z_combreloc" = yes; then | |
1592 | AC_DEFINE(HAVE_Z_COMBRELOC) | |
1593 | fi | |
1594 | AC_SUBST(libc_cv_z_combreloc) | |
2abf9ff1 | 1595 | |
a0da5fe1 UD |
1596 | AC_CACHE_CHECK(for -z execstack, |
1597 | libc_cv_z_execstack, [dnl | |
1598 | cat > conftest.c <<EOF | |
2abf9ff1 RM |
1599 | int _start (void) { return 42; } |
1600 | EOF | |
a0da5fe1 UD |
1601 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
1602 | -fPIC -shared -o conftest.so conftest.c | |
1603 | -Wl,-z,execstack -nostdlib | |
1604 | 1>&AS_MESSAGE_LOG_FD]) | |
1605 | then | |
1606 | libc_cv_z_execstack=yes | |
1607 | else | |
1608 | libc_cv_z_execstack=no | |
1609 | fi | |
1610 | rm -f conftest*]) | |
1611 | AC_SUBST(libc_cv_z_execstack) | |
c9c60884 | 1612 | |
a0da5fe1 | 1613 | AC_CACHE_CHECK(for -fpie, libc_cv_fpie, [dnl |
4da0431d JM |
1614 | LIBC_TRY_CC_OPTION([-fpie], [libc_cv_fpie=yes], [libc_cv_fpie=no]) |
1615 | ]) | |
c9c60884 | 1616 | |
a0da5fe1 | 1617 | AC_SUBST(libc_cv_fpie) |
871b9158 | 1618 | |
a0da5fe1 UD |
1619 | AC_CACHE_CHECK(for --hash-style option, |
1620 | libc_cv_hashstyle, [dnl | |
1621 | cat > conftest.c <<EOF | |
871b9158 UD |
1622 | int _start (void) { return 42; } |
1623 | EOF | |
a0da5fe1 UD |
1624 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
1625 | -fPIC -shared -o conftest.so conftest.c | |
1626 | -Wl,--hash-style=both -nostdlib 1>&AS_MESSAGE_LOG_FD]) | |
1627 | then | |
1628 | libc_cv_hashstyle=yes | |
1629 | else | |
1630 | libc_cv_hashstyle=no | |
1631 | fi | |
1632 | rm -f conftest*]) | |
1633 | AC_SUBST(libc_cv_hashstyle) | |
1634 | ||
1635 | # The linker's default -shared behavior is good enough if it | |
1636 | # does these things that our custom linker scripts ensure that | |
1637 | # all allocated NOTE sections come first. | |
1638 | if test "$use_default_link" = default; then | |
1639 | AC_CACHE_CHECK([for sufficient default -shared layout], | |
1640 | libc_cv_use_default_link, [dnl | |
1641 | libc_cv_use_default_link=no | |
1642 | cat > conftest.s <<\EOF | |
fd5e21c7 RM |
1643 | .section .note.a,"a",%note |
1644 | .balign 4 | |
1645 | .long 4,4,9 | |
1646 | .string "GNU" | |
1647 | .string "foo" | |
1648 | .section .note.b,"a",%note | |
1649 | .balign 4 | |
1650 | .long 4,4,9 | |
1651 | .string "GNU" | |
1652 | .string "bar" | |
1653 | EOF | |
a0da5fe1 | 1654 | if AC_TRY_COMMAND([dnl |
fd5e21c7 RM |
1655 | ${CC-cc} $ASFLAGS -shared -o conftest.so conftest.s 1>&AS_MESSAGE_LOG_FD]) && |
1656 | ac_try=`$READELF -S conftest.so | sed -n \ | |
1657 | ['${x;p;} | |
1658 | s/^ *\[ *[1-9][0-9]*\] *\([^ ][^ ]*\) *\([^ ][^ ]*\) .*$/\2 \1/ | |
1659 | t a | |
1660 | b | |
1661 | : a | |
1662 | H']` | |
a0da5fe1 UD |
1663 | then |
1664 | libc_seen_a=no libc_seen_b=no | |
1665 | set -- $ac_try | |
1666 | while test $# -ge 2 -a "$1" = NOTE; do | |
1667 | case "$2" in | |
1668 | .note.a) libc_seen_a=yes ;; | |
1669 | .note.b) libc_seen_b=yes ;; | |
1670 | esac | |
1671 | shift 2 | |
1672 | done | |
1673 | case "$libc_seen_a$libc_seen_b" in | |
1674 | yesyes) | |
1675 | libc_cv_use_default_link=yes | |
1676 | ;; | |
1677 | *) | |
1678 | echo >&AS_MESSAGE_LOG_FD "\ | |
fd5e21c7 RM |
1679 | $libc_seen_a$libc_seen_b from: |
1680 | $ac_try" | |
a0da5fe1 UD |
1681 | ;; |
1682 | esac | |
fd5e21c7 | 1683 | fi |
a0da5fe1 UD |
1684 | rm -f conftest*]) |
1685 | use_default_link=$libc_cv_use_default_link | |
fd26970f | 1686 | fi |
49803108 | 1687 | |
5c550700 RM |
1688 | AC_CACHE_CHECK(linker output format, libc_cv_output_format, [dnl |
1689 | if libc_cv_output_format=` | |
1690 | ${CC-cc} -nostartfiles -nostdlib -Wl,--print-output-format 2>&AS_MESSAGE_LOG_FD` | |
1691 | then | |
1692 | : | |
1693 | else | |
1694 | libc_cv_output_format= | |
1695 | fi | |
1696 | test -n "$libc_cv_output_format" || libc_cv_output_format=unknown]) | |
1697 | AC_SUBST(libc_cv_output_format) | |
1698 | ||
22dca1ea | 1699 | AC_CACHE_CHECK(for -fno-toplevel-reorder -fno-section-anchors, libc_cv_fno_toplevel_reorder, [dnl |
49803108 AJ |
1700 | cat > conftest.c <<EOF |
1701 | int foo; | |
1702 | EOF | |
22dca1ea | 1703 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -fno-toplevel-reorder -fno-section-anchors |
49803108 AJ |
1704 | conftest.c 1>&AS_MESSAGE_LOG_FD]) |
1705 | then | |
18e2ac6d | 1706 | libc_cv_fno_toplevel_reorder=yes |
49803108 | 1707 | else |
18e2ac6d | 1708 | libc_cv_fno_toplevel_reorder=no |
49803108 AJ |
1709 | fi |
1710 | rm -f conftest*]) | |
18e2ac6d | 1711 | if test $libc_cv_fno_toplevel_reorder = yes; then |
22dca1ea | 1712 | fno_unit_at_a_time="-fno-toplevel-reorder -fno-section-anchors" |
18e2ac6d | 1713 | else |
49803108 AJ |
1714 | fno_unit_at_a_time=-fno-unit-at-a-time |
1715 | fi | |
1716 | AC_SUBST(fno_unit_at_a_time) | |
fd26970f | 1717 | |
401a9ec9 | 1718 | AC_CACHE_CHECK(for -fstack-protector, libc_cv_ssp, [dnl |
17228132 TS |
1719 | LIBC_TRY_CC_OPTION([$CFLAGS $CPPFLAGS -Werror -fstack-protector], |
1720 | [libc_cv_ssp=yes], | |
1721 | [libc_cv_ssp=no]) | |
1722 | ]) | |
401a9ec9 UD |
1723 | AC_SUBST(libc_cv_ssp) |
1724 | ||
b037a293 UD |
1725 | AC_CACHE_CHECK(for -fgnu89-inline, libc_cv_gnu89_inline, [dnl |
1726 | cat > conftest.c <<EOF | |
1727 | int foo; | |
1728 | #ifdef __GNUC_GNU_INLINE__ | |
1729 | main () { return 0;} | |
1730 | #else | |
1731 | #error | |
1732 | #endif | |
1733 | EOF | |
371f84a4 JJ |
1734 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -std=gnu99 -fgnu89-inline |
1735 | -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD]) | |
b037a293 UD |
1736 | then |
1737 | libc_cv_gnu89_inline=yes | |
1738 | else | |
1739 | libc_cv_gnu89_inline=no | |
1740 | fi | |
1741 | rm -f conftest*]) | |
1742 | if test $libc_cv_gnu89_inline = yes; then | |
1c7570ff | 1743 | gnu89_inline=-fgnu89-inline |
b037a293 | 1744 | else |
1c7570ff | 1745 | gnu89_inline= |
b037a293 | 1746 | fi |
1c7570ff | 1747 | AC_SUBST(gnu89_inline) |
b037a293 | 1748 | |
a0da5fe1 UD |
1749 | AC_CACHE_CHECK(whether cc puts quotes around section names, |
1750 | libc_cv_have_section_quotes, | |
1751 | [cat > conftest.c <<EOF | |
1752 | static const int foo | |
1753 | __attribute__ ((section ("bar"))) = 1; | |
e26dd47f | 1754 | EOF |
a0da5fe1 UD |
1755 | if ${CC-cc} -S conftest.c -o conftest.s; then |
1756 | if grep '\.section.*"bar"' conftest.s >/dev/null; then | |
1757 | libc_cv_have_section_quotes=yes | |
e26dd47f | 1758 | else |
a0da5fe1 | 1759 | libc_cv_have_section_quotes=no |
e26dd47f | 1760 | fi |
a0da5fe1 UD |
1761 | else |
1762 | libc_cv_have_section_quotes=unknown | |
1763 | fi | |
1764 | rm -f conftest.{c,s} | |
1765 | ]) | |
1766 | if test $libc_cv_have_section_quotes = yes; then | |
1767 | AC_DEFINE(HAVE_SECTION_QUOTES) | |
9a97d1f7 UD |
1768 | fi |
1769 | ||
1770 | AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive, | |
75d86c1f | 1771 | [dnl |
c224a18a | 1772 | cat > conftest.s <<EOF |
2293395f | 1773 | ${libc_cv_dot_text} |
7b8e0d49 | 1774 | .globl foo |
ae1025be | 1775 | foo: |
c224a18a RM |
1776 | .weak foo |
1777 | .weak bar; bar = foo | |
1778 | EOF | |
3217788f | 1779 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then |
9a97d1f7 UD |
1780 | libc_cv_asm_weak_directive=yes |
1781 | else | |
1782 | libc_cv_asm_weak_directive=no | |
1783 | fi | |
1784 | rm -f conftest*]) | |
c224a18a | 1785 | |
c8cf0b14 | 1786 | if test $libc_cv_asm_weak_directive = no; then |
c224a18a RM |
1787 | AC_CACHE_CHECK(for assembler .weakext directive, |
1788 | libc_cv_asm_weakext_directive, | |
1789 | [dnl | |
1790 | cat > conftest.s <<EOF | |
2293395f | 1791 | ${libc_cv_dot_text} |
7b8e0d49 | 1792 | .globl foo |
ae1025be | 1793 | foo: |
f802accb UD |
1794 | .weakext bar foo |
1795 | .weakext baz | |
7b8e0d49 | 1796 | .globl baz |
9a97d1f7 | 1797 | baz: |
c224a18a | 1798 | EOF |
3217788f | 1799 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then |
c224a18a RM |
1800 | libc_cv_asm_weakext_directive=yes |
1801 | else | |
1802 | libc_cv_asm_weakext_directive=no | |
1803 | fi | |
1804 | rm -f conftest*]) | |
1805 | ||
9a97d1f7 | 1806 | fi # no .weak |
c224a18a | 1807 | |
ffcf9634 | 1808 | if test $libc_cv_asm_weak_directive = yes; then |
c224a18a | 1809 | AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE) |
ffcf9634 | 1810 | elif test $libc_cv_asm_weakext_directive = yes; then |
c224a18a RM |
1811 | AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE) |
1812 | fi | |
1813 | ||
50189569 | 1814 | AC_CACHE_CHECK(whether CFI directives are supported, libc_cv_asm_cfi_directives, [dnl |
ced368f7 UD |
1815 | case $machine in |
1816 | sparc/sparc64*) cfi_offset=2047;; | |
1817 | *) cfi_offset=0;; | |
1818 | esac | |
50189569 | 1819 | cat > conftest.s <<EOF |
77e8bddf AS |
1820 | .text |
1821 | .type func,%function | |
50189569 | 1822 | func: |
77e8bddf | 1823 | .cfi_startproc |
f212e8dc | 1824 | .cfi_remember_state |
ced368f7 | 1825 | .cfi_rel_offset 1, $cfi_offset |
77e8bddf | 1826 | .cfi_endproc |
50189569 AJ |
1827 | EOF |
1828 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
1829 | libc_cv_asm_cfi_directives=yes | |
1830 | else | |
1831 | libc_cv_asm_cfi_directives=no | |
1832 | fi | |
1833 | rm -f conftest*]) | |
1834 | if test $libc_cv_asm_cfi_directives = yes; then | |
1835 | AC_DEFINE(HAVE_ASM_CFI_DIRECTIVES) | |
bcd5f356 | 1836 | fi |
50189569 | 1837 | |
a641835a RM |
1838 | AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl |
1839 | cat > conftest.c <<\EOF | |
5f0e6fc7 | 1840 | _start () {} |
dcf0671d UD |
1841 | int __eh_pc; |
1842 | __throw () {} | |
a641835a | 1843 | EOF |
dcea62dd | 1844 | dnl No \ in command here because it ends up inside ''. |
3217788f | 1845 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dcea62dd | 1846 | -nostdlib -nostartfiles -Wl,--no-whole-archive |
c2f55635 | 1847 | -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then |
a641835a RM |
1848 | libc_cv_ld_no_whole_archive=yes |
1849 | else | |
1850 | libc_cv_ld_no_whole_archive=no | |
1851 | fi | |
1852 | rm -f conftest*]) | |
3ce1f295 UD |
1853 | if test $libc_cv_ld_no_whole_archive = no; then |
1854 | AC_MSG_ERROR([support for --no-whole-archive is needed]) | |
b17277cf | 1855 | fi |
a641835a | 1856 | |
dff14448 | 1857 | AC_CACHE_CHECK(for gcc -fexceptions, libc_cv_gcc_exceptions, [dnl |
b236e99d UD |
1858 | cat > conftest.c <<\EOF |
1859 | _start () {} | |
1860 | int __eh_pc; | |
1861 | __throw () {} | |
1862 | EOF | |
1863 | dnl No \ in command here because it ends up inside ''. | |
3217788f | 1864 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dff14448 | 1865 | -nostdlib -nostartfiles -fexceptions |
c2f55635 | 1866 | -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then |
dff14448 | 1867 | libc_cv_gcc_exceptions=yes |
b236e99d | 1868 | else |
dff14448 | 1869 | libc_cv_gcc_exceptions=no |
b236e99d UD |
1870 | fi |
1871 | rm -f conftest*]) | |
dff14448 UD |
1872 | if test $libc_cv_gcc_exceptions = yes; then |
1873 | exceptions=-fexceptions | |
b17277cf | 1874 | fi |
dff14448 | 1875 | AC_SUBST(exceptions)dnl |
b236e99d | 1876 | |
66000494 UD |
1877 | if test "$host_cpu" = powerpc ; then |
1878 | # Check for a bug present in at least versions 2.8.x of GCC | |
1879 | # and versions 1.0.x of EGCS. | |
1880 | AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl | |
1881 | AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],, | |
1882 | libc_cv_c_asmcr0_bug='no', | |
1883 | libc_cv_c_asmcr0_bug='yes')]) | |
1884 | if test "$libc_cv_c_asmcr0_bug" != 'no'; then | |
1885 | AC_DEFINE(BROKEN_PPC_ASM_CR0) | |
1886 | fi | |
1887 | fi | |
1888 | ||
d555194c UD |
1889 | AC_CACHE_CHECK(for __builtin_memset, libc_cv_gcc_builtin_memset, [dnl |
1890 | cat > conftest.c <<\EOF | |
1891 | void zero (void *x) | |
1892 | { | |
a52d1562 | 1893 | __builtin_memset (x, 0, 1000); |
d555194c UD |
1894 | } |
1895 | EOF | |
1896 | dnl | |
1897 | if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "memset" > /dev/null]); | |
1898 | then | |
1899 | libc_cv_gcc_builtin_memset=no | |
1900 | else | |
1901 | libc_cv_gcc_builtin_memset=yes | |
1902 | fi | |
1903 | rm -f conftest* ]) | |
1904 | if test "$libc_cv_gcc_builtin_memset" = yes ; then | |
1905 | AC_DEFINE(HAVE_BUILTIN_MEMSET) | |
1906 | fi | |
1907 | ||
85dd1003 UD |
1908 | AC_CACHE_CHECK(for redirection of built-in functions, libc_cv_gcc_builtin_redirection, [dnl |
1909 | cat > conftest.c <<\EOF | |
1910 | extern char *strstr (const char *, const char *) __asm ("my_strstr"); | |
1911 | char *foo (const char *a, const char *b) | |
1912 | { | |
1913 | return __builtin_strstr (a, b); | |
1914 | } | |
1915 | EOF | |
1916 | dnl | |
1917 | if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "my_strstr" > /dev/null]); | |
1918 | then | |
1919 | libc_cv_gcc_builtin_redirection=yes | |
1920 | else | |
1921 | libc_cv_gcc_builtin_redirection=no | |
1922 | fi | |
1923 | rm -f conftest* ]) | |
3ce1f295 UD |
1924 | if test "$libc_cv_gcc_builtin_redirection" = no; then |
1925 | AC_MSG_ERROR([support for the symbol redirection needed]) | |
85dd1003 UD |
1926 | fi |
1927 | ||
739d440d | 1928 | dnl Check whether the compiler supports the __thread keyword. |
3ce1f295 UD |
1929 | AC_CACHE_CHECK([for __thread], libc_cv_gcc___thread, |
1930 | [cat > conftest.c <<\EOF | |
fbb18522 RM |
1931 | __thread int a = 42; |
1932 | EOF | |
3ce1f295 UD |
1933 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c >&AS_MESSAGE_LOG_FD]); then |
1934 | libc_cv_gcc___thread=yes | |
739d440d UD |
1935 | else |
1936 | libc_cv_gcc___thread=no | |
1937 | fi | |
3ce1f295 UD |
1938 | rm -f conftest*]) |
1939 | if test "$libc_cv_gcc___thread" = no; then | |
1940 | AC_MSG_ERROR([support for the __thread keyword is required]) | |
1941 | fi | |
739d440d | 1942 | |
3ce1f295 UD |
1943 | dnl Check whether the compiler supports the tls_model attribute. |
1944 | AC_CACHE_CHECK([for tls_model attribute], libc_cv_gcc_tls_model_attr, [dnl | |
1945 | cat > conftest.c <<\EOF | |
9b21e6bc RM |
1946 | extern __thread int a __attribute__((tls_model ("initial-exec"))); |
1947 | EOF | |
3ce1f295 UD |
1948 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -Werror conftest.c >&AS_MESSAGE_LOG_FD]); then |
1949 | libc_cv_gcc_tls_model_attr=yes | |
1950 | else | |
1951 | libc_cv_gcc_tls_model_attr=no | |
1952 | fi | |
1953 | rm -f conftest*]) | |
1954 | if test "$libc_cv_gcc_tls_model_attr" = no; then | |
1955 | AC_MSG_ERROR([support for the tls_model attribute is required]) | |
9b21e6bc | 1956 | fi |
739d440d | 1957 | |
7998fa78 AS |
1958 | dnl Determine how to disable generation of FMA instructions. |
1959 | AC_CACHE_CHECK([for compiler option to disable generation of FMA instructions], | |
1960 | libc_cv_cc_nofma, [dnl | |
1961 | libc_cv_cc_nofma= | |
1962 | for opt in -ffp-contract=off -mno-fused-madd; do | |
1963 | LIBC_TRY_CC_OPTION([$opt], [libc_cv_cc_nofma=$opt; break]) | |
1964 | done]) | |
1965 | ||
2cf9ad57 RM |
1966 | if test -n "$submachine"; then |
1967 | AC_CACHE_CHECK([for compiler option for CPU variant], | |
f7d82dc9 | 1968 | libc_cv_cc_submachine, [dnl |
2cf9ad57 RM |
1969 | libc_cv_cc_submachine=no |
1970 | for opt in "-march=$submachine" "-mcpu=$submachine"; do | |
40b601fb | 1971 | LIBC_TRY_CC_OPTION([$opt], [ |
2cf9ad57 | 1972 | libc_cv_cc_submachine="$opt" |
40b601fb | 1973 | break], []) |
2cf9ad57 RM |
1974 | done]) |
1975 | if test "x$libc_cv_cc_submachine" = xno; then | |
1976 | AC_MSG_ERROR([${CC-cc} does not support $submachine]) | |
1977 | fi | |
1978 | fi | |
1979 | AC_SUBST(libc_cv_cc_submachine) | |
1980 | ||
c8f3e6db UD |
1981 | dnl Check whether we have the gd library available. |
1982 | AC_MSG_CHECKING(for libgd) | |
6dab8688 UD |
1983 | if test "$with_gd" != "no"; then |
1984 | old_CFLAGS="$CFLAGS" | |
1985 | CFLAGS="$CFLAGS $libgd_include" | |
1986 | old_LDFLAGS="$LDFLAGS" | |
1987 | LDFLAGS="$LDFLAGS $libgd_ldflags" | |
1988 | old_LIBS="$LIBS" | |
1989 | LIBS="$LIBS -lgd -lpng -lz -lm" | |
1990 | AC_TRY_LINK([#include <gd.h>], [gdImagePng (0, 0)], LIBGD=yes, LIBGD=no) | |
1991 | CFLAGS="$old_CFLAGS" | |
1992 | LDFLAGS="$old_LDFLAGS" | |
1993 | LIBS="$old_LIBS" | |
1994 | else | |
1995 | LIBGD=no | |
1996 | fi | |
c8f3e6db UD |
1997 | AC_MSG_RESULT($LIBGD) |
1998 | AC_SUBST(LIBGD) | |
3d558f4e | 1999 | |
2fff3d93 UD |
2000 | # SELinux detection |
2001 | if test x$with_selinux = xno ; then | |
2002 | have_selinux=no; | |
2003 | else | |
2004 | # See if we have the SELinux library | |
2005 | AC_CHECK_LIB(selinux, is_selinux_enabled, | |
2006 | have_selinux=yes, have_selinux=no) | |
2007 | # See if we have the SELinux header with the NSCD permissions in it. | |
2008 | if test x$have_selinux = xyes ; then | |
2009 | AC_MSG_CHECKING([for NSCD Flask permissions in selinux/av_permissions.h]) | |
2010 | AC_TRY_COMPILE([#include <selinux/av_permissions.h>], | |
2011 | [#ifdef NSCD__SHMEMHOST | |
2012 | return 0; | |
2013 | #else | |
2014 | #error NSCD__SHMEMHOST not defined | |
2015 | #endif], | |
2016 | have_selinux=yes, have_selinux=no) | |
2017 | AC_MSG_RESULT($have_selinux) | |
2018 | fi | |
2019 | ||
49155d51 | 2020 | if test x$with_selinux = xyes ; then |
2fff3d93 | 2021 | if test x$have_selinux = xno ; then |
49155d51 | 2022 | AC_MSG_ERROR([SELinux explicitly required, but sufficiently recent SELinux library not found]) |
2fff3d93 UD |
2023 | fi |
2024 | fi | |
2025 | fi | |
2026 | # Check if we're building with SELinux support. | |
2027 | if test "x$have_selinux" = xyes; then | |
943db9eb | 2028 | AC_DEFINE(HAVE_SELINUX, 1, [SELinux support]) |
ec23b9be UD |
2029 | |
2030 | # See if we have the libaudit library | |
943db9eb | 2031 | AC_CHECK_LIB(audit, audit_log_user_avc_message, |
77e8bddf | 2032 | have_libaudit=yes, have_libaudit=no) |
ec23b9be | 2033 | if test "x$have_libaudit" = xyes; then |
943db9eb | 2034 | AC_DEFINE(HAVE_LIBAUDIT, 1, [SELinux libaudit support]) |
ec23b9be UD |
2035 | fi |
2036 | AC_SUBST(have_libaudit) | |
1f063dca UD |
2037 | |
2038 | # See if we have the libcap library | |
2039 | AC_CHECK_LIB(cap, cap_init, have_libcap=yes, have_libcap=no) | |
2040 | if test "x$have_libcap" = xyes; then | |
2041 | AC_DEFINE(HAVE_LIBCAP, 1, [SELinux libcap support]) | |
2042 | fi | |
2043 | AC_SUBST(have_libcap) | |
2fff3d93 UD |
2044 | fi |
2045 | AC_SUBST(have_selinux) | |
2046 | ||
8ed1e7d5 GK |
2047 | dnl check for the size of 'long double'. |
2048 | AC_CHECK_SIZEOF(long double, 0) | |
2049 | sizeof_long_double=$ac_cv_sizeof_long_double | |
2050 | AC_SUBST(sizeof_long_double) | |
2051 | ||
61653dfb RM |
2052 | CPPUNDEFS= |
2053 | dnl Check for silly hacked compilers predefining _FORTIFY_SOURCE. | |
2054 | dnl Since we are building the implementations of the fortified functions here, | |
2055 | dnl having the macro defined interacts very badly. | |
2056 | AC_CACHE_CHECK([for _FORTIFY_SOURCE predefine], libc_cv_predef_fortify_source, | |
2057 | [AC_TRY_COMPILE([], [ | |
2058 | #ifdef _FORTIFY_SOURCE | |
2059 | # error bogon | |
2060 | #endif], | |
2061 | [libc_cv_predef_fortify_source=no], | |
2062 | [libc_cv_predef_fortify_source=yes])]) | |
2063 | if test $libc_cv_predef_fortify_source = yes; then | |
2064 | CPPUNDEFS="${CPPUNDEFS:+$CPPUNDEFS }-U_FORTIFY_SOURCE" | |
2065 | fi | |
2066 | AC_SUBST(CPPUNDEFS) | |
2067 | ||
30b99d79 RM |
2068 | dnl Check for silly hacked compilers inserting -fstack-protector. |
2069 | dnl This breaks badly for the early startup code we compile, since | |
2070 | dnl the compiled code can refer to a magic machine-dependent location | |
2071 | dnl for the canary value before we have sufficient setup for that to | |
2072 | dnl work. It's also questionable to build all of libc with this flag | |
2073 | dnl even when you're doing that for most applications you build, since | |
2074 | dnl libc's code is so heavily-used and performance-sensitive. If we | |
2075 | dnl ever really want to make that work, it should be enabled explicitly | |
2076 | dnl in the libc build, not inherited from implicit compiler settings. | |
2077 | AC_CACHE_CHECK([whether $CC implicitly enables -fstack-protector], | |
2078 | libc_cv_predef_stack_protector, [ | |
2079 | AC_TRY_COMPILE([extern void foobar (char *);], | |
2080 | [char large_array[2048]; foobar (large_array);], [ | |
2081 | libc_undefs=`$NM -u conftest.o | | |
2082 | LC_ALL=C $AWK '$1 == "U" { print $2 | "sort -u"; next } { exit(1) }' \ | |
2083 | 2>&AS_MESSAGE_LOG_FD` || { | |
2084 | AC_MSG_ERROR([confusing output from $NM -u]) | |
2085 | } | |
2086 | echo >&AS_MESSAGE_LOG_FD "libc_undefs='$libc_undefs'" | |
59f0c22e JM |
2087 | # On some architectures, there are architecture-specific undefined |
2088 | # symbols (resolved by the linker), so filter out unknown symbols. | |
2089 | # This will fail to produce the correct result if the compiler | |
2090 | # defaults to -fstack-protector but this produces an undefined symbol | |
2091 | # other than __stack_chk_fail. However, compilers like that have not | |
2092 | # been encountered in practice. | |
2093 | libc_undefs=`echo "$libc_undefs" | egrep '^(foobar|__stack_chk_fail)$'` | |
30b99d79 RM |
2094 | case "$libc_undefs" in |
2095 | foobar) libc_cv_predef_stack_protector=no ;; | |
2096 | '__stack_chk_fail | |
2097 | foobar') libc_cv_predef_stack_protector=yes ;; | |
2098 | *) AC_MSG_ERROR([unexpected symbols in test: $libc_undefs]) ;; | |
2099 | esac], | |
2100 | [AC_MSG_ERROR([test compilation failed])]) | |
2101 | ]) | |
2102 | libc_extra_cflags= | |
2103 | if test $libc_cv_predef_stack_protector = yes; then | |
2104 | libc_extra_cflags=-fno-stack-protector | |
2105 | fi | |
2106 | AC_SUBST(libc_extra_cflags) | |
2107 | ||
c224a18a RM |
2108 | ### End of automated tests. |
2109 | ### Now run sysdeps configure fragments. | |
2110 | ||
cb343854 | 2111 | # They also can set these variables. |
591e1ffb | 2112 | use_ldconfig=no |
cb343854 | 2113 | ldd_rewrite_script=no |
77259608 | 2114 | libc_cv_sysconfdir=$sysconfdir |
4248b1b1 | 2115 | libc_cv_localstatedir=$localstatedir |
74bd2300 | 2116 | libc_cv_gcc_unwind_find_fde=no |
e2fd3cbe | 2117 | libc_cv_idn=no |
cb343854 | 2118 | |
28f540f4 | 2119 | # Iterate over all the sysdep directories we will use, running their |
09055553 | 2120 | # configure fragments. |
28f540f4 | 2121 | for dir in $sysnames; do |
57ba7bb4 UD |
2122 | case $dir in |
2123 | /*) dest=$dir ;; | |
2124 | *) dest=$srcdir/$dir ;; | |
2125 | esac | |
2126 | if test -r $dest/configure; then | |
d1149385 | 2127 | AC_MSG_RESULT(running configure fragment for $dir) |
57ba7bb4 | 2128 | . $dest/configure |
28f540f4 | 2129 | fi |
28f540f4 RM |
2130 | done |
2131 | ||
74bd2300 UD |
2132 | if test x$libc_cv_gcc_unwind_find_fde = xyes; then |
2133 | AC_DEFINE(EXPORT_UNWIND_FIND_FDE) | |
2134 | fi | |
2135 | AC_SUBST(libc_cv_gcc_unwind_find_fde) | |
2136 | ||
6e6249d0 RM |
2137 | # A sysdeps configure fragment can reset this if IFUNC is not actually |
2138 | # usable even though the assembler knows how to generate the symbol type. | |
2139 | if test x"$libc_cv_ld_gnu_indirect_function" = xyes; then | |
2140 | AC_DEFINE(HAVE_IFUNC) | |
2141 | fi | |
2142 | ||
3cc3ef96 RM |
2143 | # This is far from the AC_ARG_ENABLE that sets it so that a sysdeps |
2144 | # configure fragment can override the value to prevent this AC_DEFINE. | |
2145 | AC_SUBST(use_nscd) | |
2146 | if test "x$use_nscd" != xno; then | |
2147 | AC_DEFINE([USE_NSCD]) | |
2148 | fi | |
c53d909c RM |
2149 | if test "x$build_nscd" = xdefault; then |
2150 | build_nscd=$use_nscd | |
2151 | fi | |
3cc3ef96 | 2152 | |
a53bad16 UD |
2153 | # Test for old glibc 2.0.x headers so that they can be removed properly |
2154 | # Search only in includedir. | |
2155 | AC_MSG_CHECKING(for old glibc 2.0.x headers) | |
350eb336 | 2156 | if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h" |
a53bad16 UD |
2157 | then |
2158 | old_glibc_headers=yes | |
2159 | else | |
2160 | old_glibc_headers=no | |
2161 | fi | |
2162 | AC_MSG_RESULT($old_glibc_headers) | |
2163 | if test ${old_glibc_headers} = yes; then | |
2164 | AC_MSG_WARN(*** During \"make install\" old headers from glibc 2.0.x will) | |
2165 | AC_MSG_WARN(*** be removed.) | |
2166 | fi | |
b195f6bc | 2167 | AC_SUBST(old_glibc_headers) |
26b4d766 | 2168 | |
84384f5b | 2169 | AC_SUBST(libc_cv_slibdir) |
a1d84548 | 2170 | AC_SUBST(libc_cv_localedir) |
77259608 | 2171 | AC_SUBST(libc_cv_sysconfdir) |
4248b1b1 | 2172 | AC_SUBST(libc_cv_localstatedir) |
1ef32c3d | 2173 | AC_SUBST(libc_cv_rootsbindir) |
bcd5f356 | 2174 | AC_SUBST(libc_cv_forced_unwind) |
1ef32c3d | 2175 | |
58a4b51a | 2176 | dnl sysdeps/CPU/configure.in checks set this via arch-specific asm tests |
06e51c8f | 2177 | AC_SUBST(libc_cv_cc_sse4) |
b0ecde3a | 2178 | AC_SUBST(libc_cv_cc_avx) |
3b100462 | 2179 | AC_SUBST(libc_cv_cc_sse2avx) |
091023f5 | 2180 | AC_SUBST(libc_cv_cc_novzeroupper) |
af968f62 | 2181 | AC_SUBST(libc_cv_cc_fma4) |
7998fa78 | 2182 | AC_SUBST(libc_cv_cc_nofma) |
01f1f5ee | 2183 | AC_SUBST(libc_cv_as_i686) |
eae47a36 | 2184 | AC_SUBST(libc_cv_sparc_as_vis3) |
58a4b51a | 2185 | |
f57f8055 RM |
2186 | if test x$use_ldconfig = xyes; then |
2187 | AC_DEFINE(USE_LDCONFIG) | |
2188 | fi | |
591e1ffb | 2189 | AC_SUBST(use_ldconfig) |
cb343854 | 2190 | AC_SUBST(ldd_rewrite_script) |
84384f5b | 2191 | |
650425ce | 2192 | AC_SUBST(static) |
ff3d7ed3 | 2193 | AC_SUBST(shared) |
a334319f | 2194 | |
ff886b82 UD |
2195 | AC_CACHE_CHECK([whether -fPIC is default], libc_cv_pic_default, |
2196 | [libc_cv_pic_default=yes | |
cc3fa755 | 2197 | cat > conftest.c <<EOF |
9756dfe1 | 2198 | #if defined __PIC__ || defined __pic__ || defined PIC || defined pic |
cc3fa755 UD |
2199 | # error PIC is default. |
2200 | #endif | |
2201 | EOF | |
0b4ee387 | 2202 | if eval "${CC-cc} -S conftest.c 2>&AS_MESSAGE_LOG_FD 1>&AS_MESSAGE_LOG_FD"; then |
ff886b82 | 2203 | libc_cv_pic_default=no |
cc3fa755 UD |
2204 | fi |
2205 | rm -f conftest.*]) | |
ff886b82 | 2206 | AC_SUBST(libc_cv_pic_default) |
cc3fa755 | 2207 | |
ff3d7ed3 | 2208 | AC_SUBST(profile) |
5107cf1d | 2209 | AC_SUBST(static_nss) |
ff3d7ed3 | 2210 | |
edf5b2d7 UD |
2211 | AC_SUBST(DEFINES) |
2212 | ||
61c83c3f RM |
2213 | dnl See sysdeps/mach/configure.in for this variable. |
2214 | AC_SUBST(mach_interface_list) | |
2215 | ||
ee74a442 UD |
2216 | VERSION=`sed -n -e 's/^#define VERSION "\([^"]*\)"/\1/p' < $srcdir/version.h` |
2217 | RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h` | |
df4ef2ab | 2218 | AC_SUBST(VERSION) |
ee74a442 | 2219 | AC_SUBST(RELEASE) |
df4ef2ab | 2220 | |
728e272a | 2221 | AC_CONFIG_FILES([config.make Makefile]) |
c118d634 | 2222 | AC_CONFIG_COMMANDS([default],[[ |
737547be UD |
2223 | case $CONFIG_FILES in *config.make*) |
2224 | echo "$config_vars" >> config.make;; | |
2225 | esac | |
c118d634 RM |
2226 | test -d bits || mkdir bits]],[[config_vars='$config_vars']]) |
2227 | AC_OUTPUT |