]>
Commit | Line | Data |
---|---|---|
f4017d20 | 1 | dnl Process this file with autoconf to produce a configure script. |
ff3d7ed3 | 2 | AC_REVISION([$CVSid$]) |
3a12e572 | 3 | AC_PREREQ(2.53)dnl dnl Minimum Autoconf version required. |
5d77b1da RM |
4 | AC_INIT([GNU C Library], [(see version.h)], [glibc]) |
5 | AC_CONFIG_SRCDIR([include/features.h]) | |
6b7f6183 RM |
6 | AC_CONFIG_HEADERS([config.h]) |
7 | AC_CONFIG_AUX_DIR([scripts]) | |
28f540f4 | 8 | |
c72637d4 RM |
9 | if test "`cd $srcdir; /bin/pwd`" = "`/bin/pwd`"; then |
10 | AC_MSG_ERROR([you must configure in a separate build directory]) | |
11 | fi | |
12 | ||
28f540f4 RM |
13 | # This will get text that should go into config.make. |
14 | config_vars= | |
15 | ||
a334319f UD |
16 | # Check for a --with-gmp argument and set gmp-srcdir in config.make. |
17 | AC_ARG_WITH([gmp], | |
18 | AC_HELP_STRING([--with-gmp=DIRECTORY], | |
19 | [find GMP source code in DIRECTORY (not needed)]), | |
20 | [ | |
21 | case "$with_gmp" in | |
22 | yes) AC_MSG_ERROR([--with-gmp requires an argument; use --with-gmp=DIRECTORY]) ;; | |
23 | ''|no) ;; | |
24 | *) config_vars="$config_vars | |
25 | gmp-srcdir = $withval" ;; | |
26 | esac | |
27 | ]) | |
c8f3e6db | 28 | # Check for a --with-gd argument and set libgd-LDFLAGS in config.make. |
6b7f6183 RM |
29 | AC_ARG_WITH([gd], |
30 | AC_HELP_STRING([--with-gd=DIR], | |
31 | [find libgd include dir and library with prefix DIR]), | |
c8f3e6db UD |
32 | [dnl |
33 | case "$with_gd" in | |
f5f7239f UD |
34 | yes|''|no) ;; |
35 | *) libgd_include="-I$withval/include" | |
c8f3e6db UD |
36 | libgd_ldflags="-L$withval/lib" ;; |
37 | esac | |
38 | ]) | |
6b7f6183 RM |
39 | AC_ARG_WITH([gd-include], |
40 | AC_HELP_STRING([--with-gd-include=DIR], | |
41 | [find libgd include files in DIR]), | |
f5f7239f UD |
42 | [dnl |
43 | case "$with_gd_include" in | |
44 | ''|no) ;; | |
45 | *) libgd_include="-I$withval" ;; | |
46 | esac | |
47 | ]) | |
6b7f6183 RM |
48 | AC_ARG_WITH([gd-lib], |
49 | AC_HELP_STRING([--with-gd-lib=DIR], | |
50 | [find libgd library files in DIR]), | |
f5f7239f UD |
51 | [dnl |
52 | case "$with_gd_lib" in | |
53 | ''|no) ;; | |
54 | *) libgd_ldflags="-L$withval" ;; | |
55 | esac | |
56 | ]) | |
57 | ||
58 | if test -n "$libgd_include"; then | |
59 | config_vars="$config_vars | |
cf90163d | 60 | CFLAGS-memusagestat.c = $libgd_include" |
f5f7239f UD |
61 | fi |
62 | if test -n "$libgd_ldflags"; then | |
63 | config_vars="$config_vars | |
64 | libgd-LDFLAGS = $libgd_ldflags" | |
65 | fi | |
28f540f4 | 66 | |
ff3d7ed3 | 67 | dnl Arguments to specify presence of other packages/features. |
6b7f6183 RM |
68 | AC_ARG_WITH([fp], |
69 | AC_HELP_STRING([--with-fp], | |
70 | [if using floating-point hardware @<:@default=yes@:>@]), | |
71 | [with_fp=$withval], | |
72 | [with_fp=yes]) | |
675322a5 | 73 | AC_SUBST(with_fp) |
6b7f6183 RM |
74 | AC_ARG_WITH([binutils], |
75 | AC_HELP_STRING([--with-binutils=PATH], | |
76 | [specify location of binutils (as and ld)]), | |
77 | [path_binutils=$withval], | |
78 | [path_binutils='']) | |
79 | AC_ARG_WITH([elf], | |
80 | AC_HELP_STRING([--with-elf], | |
81 | [if using the ELF object format]), | |
82 | [elf=$withval], | |
83 | [elf=no]) | |
2fff3d93 UD |
84 | AC_ARG_WITH([selinux], |
85 | AC_HELP_STRING([--with-selinux], | |
86 | [if building with SELinux support]), | |
87 | [with_selinux=$withval], | |
88 | [with_selinux=auto]) | |
6b7f6183 RM |
89 | AC_ARG_WITH([xcoff], |
90 | AC_HELP_STRING([--with-xcoff], | |
91 | [if using the XCOFF object format]), | |
92 | [xcoff=$withval], | |
93 | [xcoff=no]) | |
94 | AC_ARG_WITH([cvs], | |
95 | AC_HELP_STRING([--without-cvs], | |
96 | [if CVS should not be used]), | |
97 | [with_cvs=$withval], | |
98 | [with_cvs=yes]) | |
6b3f2b3d UD |
99 | if test "$with_cvs" = yes; then |
100 | if test -d $srcdir/CVS && grep :pserver: $srcdir/CVS/Root > /dev/null | |
101 | then | |
102 | with_cvs=no | |
103 | fi | |
4442d7e8 | 104 | fi |
4d06461a | 105 | AC_SUBST(with_cvs) |
28f540f4 | 106 | |
6b7f6183 RM |
107 | AC_ARG_WITH([headers], |
108 | AC_HELP_STRING([--with-headers=PATH], | |
109 | [location of system headers to use | |
110 | (for example /usr/src/linux/include) | |
111 | @<:@default=compiler default@:>@]), | |
112 | [sysheaders=$withval], | |
113 | [sysheaders='']) | |
dbe7a0f5 | 114 | |
6b7f6183 RM |
115 | AC_ARG_ENABLE([sanity-checks], |
116 | AC_HELP_STRING([--disable-sanity-checks], | |
117 | [really do not use threads (should not be used except in special situations) @<:@default=yes@:>@]), | |
118 | [enable_sanity=$enableval], | |
119 | [enable_sanity=yes]) | |
a18f587d | 120 | |
7dbde9db RM |
121 | AC_SUBST(enable_check_abi) |
122 | AC_ARG_ENABLE([check-abi], | |
fd54683c RM |
123 | AC_HELP_STRING([--enable-check-abi], |
124 | [do "make check-abi" in "make check" (no/warn/yes) | |
125 | @<:@default=no@:>@]), | |
7dbde9db | 126 | [enable_check_abi=$enableval], |
fd54683c | 127 | [enable_check_abi=no]) |
7dbde9db | 128 | |
650425ce UD |
129 | dnl Arguments to enable or disable building the static, shared, profiled, |
130 | dnl and -fomit-frame-pointer libraries. | |
b38bb8ca UD |
131 | dnl I've disabled this for now since we cannot build glibc without static |
132 | dnl libraries built in the moment. | |
6b7f6183 RM |
133 | dnl AC_ARG_ENABLE([static], |
134 | dnl AC_HELP_STRING([--enable-static], | |
135 | dnl [build static library @<:@default=yes@:>@]), | |
136 | dnl [static=$enableval], | |
137 | dnl [static=yes]) | |
5c2a0669 | 138 | static=yes |
6b7f6183 RM |
139 | AC_ARG_ENABLE([shared], |
140 | AC_HELP_STRING([--enable-shared], | |
141 | [build shared library @<:@default=yes if GNU ld & ELF@:>@]), | |
142 | [shared=$enableval], | |
143 | [shared=default]) | |
144 | AC_ARG_ENABLE([profile], | |
145 | AC_HELP_STRING([--enable-profile], | |
146 | [build profiled library @<:@default=yes@:>@]), | |
147 | [profile=$enableval], | |
148 | [profile=yes]) | |
149 | AC_ARG_ENABLE([omitfp], | |
150 | AC_HELP_STRING([--enable-omitfp], | |
151 | [build undebuggable optimized library @<:@default=no@:>@]), | |
152 | [omitfp=$enableval], | |
153 | [omitfp=no]) | |
154 | AC_ARG_ENABLE([bounded], | |
155 | AC_HELP_STRING([--enable-bounded], | |
156 | [build with runtime bounds checking @<:@default=no@:>@]), | |
157 | [bounded=$enableval], | |
158 | [bounded=no]) | |
159 | AC_ARG_ENABLE([versioning], | |
160 | AC_HELP_STRING([--disable-versioning], | |
161 | [do not include versioning information in the library objects @<:@default=yes if supported@:>@]), | |
162 | [enable_versioning=$enableval], | |
163 | [enable_versioning=yes]) | |
164 | ||
165 | AC_ARG_ENABLE([oldest-abi], | |
166 | AC_HELP_STRING([--enable-oldest-abi=ABI], | |
167 | [configure the oldest ABI supported @<:@e.g. 2.2@:>@ @<:@default=glibc default@:>@]), | |
168 | [oldest_abi=$enableval], | |
169 | [oldest_abi=no]) | |
62ab42d6 UD |
170 | if test "$oldest_abi" = yes || test "$oldest_abi" = no; then |
171 | oldest_abi=default | |
172 | else | |
173 | AC_DEFINE_UNQUOTED(GLIBC_OLDEST_ABI, "$oldest_abi") | |
174 | fi | |
175 | AC_SUBST(oldest_abi) | |
176 | ||
6b3a2224 | 177 | dnl Generic infrastructure for drop-in additions to libc. |
6b7f6183 RM |
178 | AC_ARG_ENABLE([add-ons], |
179 | AC_HELP_STRING([--enable-add-ons@<:@=DIRS...@:>@], | |
a334319f UD |
180 | [configure and build add-ons in DIR1,DIR2,... search for add-ons if no parameter given]), |
181 | [case "$enableval" in | |
182 | yes) add_ons=`cd $srcdir && echo */configure | sed -e 's!/configure!!g'` | |
183 | add_ons_automatic=yes | |
184 | test "$add_ons" = "*" && add_ons= ;; | |
185 | *) add_ons=`echo "$enableval" | sed 's/,/ /g'` | |
186 | add_ons_automatic=no ;; | |
187 | esac], | |
188 | [add_ons= add_ons_automatic=no]) | |
61952351 | 189 | |
8d4b5a8a | 190 | dnl Let the user avoid using TLS. Don't know why but... |
6b7f6183 RM |
191 | AC_ARG_WITH([tls], |
192 | AC_HELP_STRING([--with-tls], | |
193 | [enable support for TLS]), | |
194 | [usetls=$withval], | |
619f9448 | 195 | [usetls=yes]) |
8d4b5a8a | 196 | |
6b7f6183 RM |
197 | AC_ARG_WITH([__thread], |
198 | AC_HELP_STRING([--without-__thread], | |
199 | [do not use TLS features even when supporting them]), | |
200 | [use__thread=$withval], | |
201 | [use__thread=yes]) | |
5b8f26b4 | 202 | |
6b7f6183 RM |
203 | AC_ARG_ENABLE([hidden-plt], |
204 | AC_HELP_STRING([--disable-hidden-plt], | |
205 | [do not hide internal function calls to avoid PLT]), | |
206 | [hidden=$enableval], | |
207 | [hidden=yes]) | |
749a9a4f RM |
208 | if test "x$hidden" = xno; then |
209 | AC_DEFINE(NO_HIDDEN) | |
210 | fi | |
211 | ||
4df8c11d UD |
212 | AC_ARG_ENABLE([bind-now], |
213 | AC_HELP_STRING([--enable-bind-now], | |
214 | [disable lazy relocations in DSOs]), | |
215 | [bindnow=$enableval], | |
216 | [bindnow=no]) | |
217 | AC_SUBST(bindnow) | |
218 | ||
5107cf1d UD |
219 | dnl On some platforms we cannot use dynamic loading. We must provide |
220 | dnl static NSS modules. | |
6b7f6183 RM |
221 | AC_ARG_ENABLE([static-nss], |
222 | AC_HELP_STRING([--enable-static-nss], | |
223 | [build static NSS modules @<:@default=no@:>@]), | |
224 | [static_nss=$enableval], | |
225 | [static_nss=no]) | |
834cef7c UD |
226 | dnl Enable static NSS also if we build no shared objects. |
227 | if test x"$static_nss" = xyes || test x"$shared" = xno; then | |
3172f58f | 228 | static_nss=yes |
5107cf1d UD |
229 | AC_DEFINE(DO_STATIC_NSS) |
230 | fi | |
231 | ||
6b7f6183 RM |
232 | AC_ARG_ENABLE([force-install], |
233 | AC_HELP_STRING([--disable-force-install], | |
234 | [don't force installation of files from this package, even if they are older than the installed files]), | |
235 | [force_install=$enableval], | |
236 | [force_install=yes]) | |
73237de3 UD |
237 | AC_SUBST(force_install) |
238 | ||
958f238f UD |
239 | dnl On some platforms we allow dropping compatibility with all kernel |
240 | dnl versions. | |
6b7f6183 RM |
241 | AC_ARG_ENABLE([kernel], |
242 | AC_HELP_STRING([--enable-kernel=VERSION], | |
243 | [compile for compatibility with kernel not older than VERSION]), | |
244 | [minimum_kernel=$enableval], | |
245 | []) | |
86cfe82d UD |
246 | dnl Prevent unreasonable values. |
247 | if test "$minimum_kernel" = yes || test "$minimum_kernel" = no; then | |
248 | # Better nothing than this. | |
249 | minimum_kernel="" | |
269e369f UD |
250 | else |
251 | if test "$minimum_kernel" = current; then | |
252 | minimum_kernel=`uname -r 2>/dev/null` || minimum_kernel= | |
253 | fi | |
86cfe82d | 254 | fi |
958f238f | 255 | |
6cc7d725 UD |
256 | dnl For the development we sometimes want gcc to issue even more warnings. |
257 | dnl This is not the default since many of the extra warnings are not | |
258 | dnl appropriate. | |
6b7f6183 RM |
259 | AC_ARG_ENABLE([all-warnings], |
260 | AC_HELP_STRING([--enable-all-warnings], | |
261 | [enable all useful warnings gcc can issue]), | |
262 | [all_warnings=$enableval], | |
263 | []) | |
6cc7d725 UD |
264 | AC_SUBST(all_warnings) |
265 | ||
28f540f4 | 266 | AC_CANONICAL_HOST |
8a523922 UD |
267 | |
268 | # The way shlib-versions is used to generate soversions.mk uses a | |
269 | # fairly simplistic model for name recognition that can't distinguish | |
270 | # i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os | |
271 | # of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can | |
272 | # tell. This doesn't get used much beyond that, so it's fairly safe. | |
273 | case "$host_os" in | |
274 | linux*) | |
275 | ;; | |
276 | gnu*) | |
277 | host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'` | |
278 | ;; | |
279 | esac | |
280 | ||
28f540f4 RM |
281 | # We keep the original values in `$config_*' and never modify them, so we |
282 | # can write them unchanged into config.make. Everything else uses | |
283 | # $machine, $vendor, and $os, and changes them whenever convenient. | |
284 | config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os | |
285 | ||
2f64b655 UD |
286 | # Don't allow vendor == "unknown" |
287 | test "$config_vendor" = unknown && config_vendor= | |
288 | config_os="`echo $config_os | sed 's/^unknown-//'`" | |
289 | ||
a2fe9c76 RM |
290 | # Some configurations imply other options. |
291 | case "$host_os" in | |
a334319f UD |
292 | gnu* | linux* | bsd4.4* | netbsd* | freebsd*) |
293 | # These systems always use GNU tools. | |
294 | gnu_ld=yes gnu_as=yes ;; | |
295 | esac | |
296 | case "$host_os" in | |
7799b7b3 UD |
297 | # i586-linuxaout is mangled into i586-pc-linux-gnuaout |
298 | linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*) | |
3776d592 | 299 | ;; |
ffa8d2a0 | 300 | gnu* | linux* | freebsd* | netbsd* | sysv4* | solaris2* | irix6*) |
3776d592 RM |
301 | # These systems (almost) always use the ELF format. |
302 | elf=yes | |
84724245 | 303 | ;; |
5af3245a UD |
304 | aix*) |
305 | # These systems are always xcoff | |
306 | xcoff=yes | |
a711b01d | 307 | elf=no |
5af3245a | 308 | ;; |
a2fe9c76 RM |
309 | esac |
310 | ||
8f73811b RM |
311 | # The configure fragment of an add-on port can modify these to supplement |
312 | # or override the table in the case statement below. No fragment should | |
313 | # ever change the config_* variables, however. | |
28f540f4 RM |
314 | machine=$config_machine |
315 | vendor=$config_vendor | |
316 | os=$config_os | |
317 | ||
a808d541 UD |
318 | # config.guess on some IBM machines says `rs6000' instead of `powerpc'. |
319 | # Unify this here. | |
320 | if test "$machine" = rs6000; then | |
321 | machine="powerpc" | |
322 | fi | |
323 | ||
f4b07664 RM |
324 | # Braindead PowerPC box with absolutely no FPU. |
325 | case "$machine-$host_os" in | |
326 | powerpc*-*soft) | |
327 | with_fp=no | |
328 | ;; | |
329 | esac | |
330 | ||
8f73811b | 331 | |
a334319f | 332 | # An add-on can set this when it the tuple to disable the sanity check below. |
8f73811b RM |
333 | libc_config_ok=no |
334 | ||
335 | dnl Having this here, though empty, makes sure that if add-ons' fragments | |
336 | dnl do AC_CONFIG_SUBDIRS([some-dir]), which just sets $subdirs, then | |
337 | dnl our AC_OUTPUT will actually use it. | |
338 | AC_CONFIG_SUBDIRS() | |
339 | ||
340 | add_ons_sfx= | |
341 | add_ons_pfx= | |
342 | if test x"$add_ons" != x; then | |
343 | for f in $add_ons; do | |
344 | # Some sanity checks | |
345 | case "$f" in | |
346 | crypt) | |
347 | AC_MSG_ERROR([ | |
348 | *** It seems that you're using an old \`crypt' add-on. crypt is now | |
349 | *** part of glibc and using the old add-on will not work with this | |
350 | *** release. Start again with fresh sources and without the old | |
351 | *** \`crypt' add-on.]) | |
352 | ;; | |
353 | localedata) | |
354 | AC_MSG_ERROR([ | |
355 | *** It seems that you're using an old \`localedata' add-on. localedata | |
356 | *** is now part of glibc and using the old add-on will not work with | |
357 | *** this release. Start again with fresh sources and without the old | |
358 | *** \`localedata' add-on.]) | |
359 | ;; | |
360 | esac | |
a334319f UD |
361 | |
362 | # Test whether such a subdir really exists. | |
363 | test -d $srcdir/$f || { | |
364 | AC_MSG_ERROR(add-on directory \"$f\" does not exist) | |
365 | } | |
8f73811b RM |
366 | done |
367 | ||
9382fcee | 368 | # Now source each add-on's configure fragment. |
c80e931a RM |
369 | # The fragments can use $srcdir/$libc_add_on to find themselves, |
370 | # and test $add_ons_automatic to see if they were explicitly requested. | |
371 | # A fragment can clear (or even change) $libc_add_on to affect | |
372 | # whether it goes into the list to be actually used in the build. | |
373 | use_add_ons= | |
9382fcee | 374 | for libc_add_on in $add_ons; do |
a334319f UD |
375 | libc_add_on_frag=$srcdir/$libc_add_on/configure |
376 | if test -r $libc_add_on_frag; then | |
377 | AC_MSG_RESULT(running configure fragment for add-on $libc_add_on) | |
378 | . $libc_add_on_frag | |
379 | else | |
380 | AC_MSG_WARN(add-on fragment $libc_add_on_frag missing) | |
8f73811b | 381 | fi |
619f9448 RM |
382 | if test -n "$libc_add_on"; then |
383 | use_add_ons="$use_add_ons $libc_add_on" | |
384 | add_ons_pfx="$add_ons_pfx $libc_add_on/" | |
a334319f | 385 | add_ons_sfx="$add_ons_sfx /$libc_add_on" |
619f9448 | 386 | fi |
8f73811b | 387 | done |
c80e931a RM |
388 | # Use echo to strip excess whitespace. |
389 | add_ons="`echo $use_add_ons`" | |
8f73811b RM |
390 | fi |
391 | AC_SUBST(add_ons) | |
392 | ||
393 | ||
bdc8eb03 UD |
394 | ### |
395 | ### I put this here to prevent those annoying emails from people who cannot | |
396 | ### read and try to compile glibc on unsupported platforms. --drepper | |
397 | ### | |
398 | ### By using the undocumented --enable-hacker-mode option for configure | |
399 | ### one can skip this test to make the configuration not fail for unsupported | |
400 | ### platforms. | |
401 | ### | |
8f73811b | 402 | if test -z "$enable_hacker_mode" && test x"$libc_config_ok" != xyes; then |
bdc8eb03 | 403 | case "$machine-$host_os" in |
75d86c1f | 404 | *-linux* | *-gnu* | arm*-none* | powerpc-aix4.3.*) |
bdc8eb03 UD |
405 | ;; |
406 | *) | |
407 | echo "*** The GNU C library is currently not available for this platform." | |
408 | echo "*** So far nobody cared to port it and if there is no volunteer it" | |
409 | echo "*** might never happen. So, if you have interest to see glibc on" | |
410 | echo "*** this platform visit" | |
411 | echo "*** http://www.gnu.org/software/libc/porting.html" | |
412 | echo "*** and join the group of porters" | |
413 | exit 1 | |
414 | ;; | |
415 | esac | |
416 | fi | |
417 | ||
28f540f4 RM |
418 | dnl We need to use [ and ] for other purposes for a while now. |
419 | changequote(,)dnl | |
420 | # Expand the configuration machine name into a subdirectory by architecture | |
8f73811b RM |
421 | # type and particular chip. If an add-on configure fragment already set |
422 | # base_machine, we don't change it. | |
423 | test -n "$base_machine" || case "$machine" in | |
f0523145 RM |
424 | a29k | am29000) base_machine=a29k machine=a29k ;; |
425 | alpha*) base_machine=alpha machine=alpha/$machine ;; | |
a334319f | 426 | arm*) base_machine=arm machine=arm/arm32/$machine ;; |
60c96635 UD |
427 | c3[012]) base_machine=cx0 machine=cx0/c30 ;; |
428 | c4[04]) base_machine=cx0 machine=cx0/c40 ;; | |
a334319f UD |
429 | hppa*64*) base_machine=hppa machine=hppa/hppa64 ;; |
430 | hppa*) base_machine=hppa machine=hppa/hppa1.1 ;; | |
0b755dc4 | 431 | i[34567]86) base_machine=i386 machine=i386/$machine ;; |
d64e704c | 432 | ia64) base_machine=ia64 machine=ia64 ;; |
a334319f UD |
433 | m680?0) base_machine=m68k machine=m68k/$machine ;; |
434 | m68k) base_machine=m68k machine=m68k/m68020 ;; | |
f0523145 RM |
435 | m88???) base_machine=m88k machine=m88k/$machine ;; |
436 | m88k) base_machine=m88k machine=m88k/m88100 ;; | |
a334319f UD |
437 | mips64*) base_machine=mips64 |
438 | case "$CC $CFLAGS $CPPFLAGS " in | |
439 | *" -mabi=n32 "*) mips_cc_abi=n32 ;; | |
440 | *" -mabi=64 "*|*" -mabi=n64 "*) mips_cc_abi=64 ;; | |
441 | *" -mabi=32 "*|*" -mabi=o32 "*) mips_cc_abi=32 ;; | |
442 | *) mips_cc_abi=default ;; | |
443 | esac | |
444 | case $config_os in | |
445 | *abin32*) mips_config_abi=n32 ;; | |
446 | *abi64*|*abin64*) mips_config_abi=64 ;; | |
447 | *abi32*|*abio32*) mips_config_abi=32 ;; | |
448 | *) mips_config_abi=$mips_cc_abi ;; | |
449 | esac | |
450 | case $mips_config_abi in | |
451 | default) machine=mips/mips64/n32 mips_config_abi=n32 ;; | |
452 | n32) machine=mips/mips64/n32 ;; | |
453 | 64) machine=mips/mips64/n64 ;; | |
454 | 32) machine=mips/mips32/kern64 ;; | |
455 | esac | |
456 | machine=$machine/$config_machine | |
457 | if test $mips_config_abi != $mips_cc_abi; then | |
458 | # This won't make it to config.make, but we want to | |
459 | # set this in case configure tests depend on it. | |
460 | CPPFLAGS="$CPPFLAGS -mabi=$mips_config_abi" | |
461 | fi | |
462 | ;; | |
463 | mips*) base_machine=mips machine=mips/mips32/$machine ;; | |
92b27c74 UD |
464 | powerpc) base_machine=powerpc machine=powerpc/powerpc32 ;; |
465 | powerpc64) base_machine=powerpc machine=powerpc/powerpc64 ;; | |
136d4332 UD |
466 | s390) base_machine=s390 machine=s390/s390-32 ;; |
467 | s390x) base_machine=s390 machine=s390/s390-64 ;; | |
88615235 UD |
468 | sh3*) base_machine=sh machine=sh/sh3 ;; |
469 | sh4*) base_machine=sh machine=sh/sh4 ;; | |
ca34d7a7 UD |
470 | sparc | sparcv[67]) |
471 | base_machine=sparc machine=sparc/sparc32 ;; | |
472 | sparcv8 | supersparc | hypersparc) | |
473 | base_machine=sparc machine=sparc/sparc32/sparcv8 ;; | |
ae6b8730 RH |
474 | sparcv8plus | sparcv8plusa | sparcv9) |
475 | base_machine=sparc machine=sparc/sparc32/sparcv9 ;; | |
bb769ab6 | 476 | sparcv8plusb | sparcv9b) |
a334319f UD |
477 | base_machine=sparc machine=sparc/sparc32/sparcv9b ;; |
478 | sparc64 | ultrasparc) | |
ca34d7a7 | 479 | base_machine=sparc machine=sparc/sparc64 ;; |
a334319f | 480 | sparc64b | ultrasparc3) |
bb769ab6 | 481 | base_machine=sparc machine=sparc/sparc64/sparcv9b ;; |
a334319f | 482 | thumb*) base_machine=thumb machine=arm/thumb/$machine ;; |
3a2832a0 | 483 | *) base_machine=$machine ;; |
28f540f4 | 484 | esac |
f0523145 RM |
485 | changequote([,])dnl |
486 | AC_SUBST(base_machine) | |
28f540f4 | 487 | |
dfd2257a UD |
488 | if test "$base_machine" = "i386"; then |
489 | AC_DEFINE(USE_REGPARMS) | |
490 | fi | |
491 | ||
f0523145 | 492 | # Compute the list of sysdep directories for this configuration. |
f332db02 | 493 | # This can take a while to compute. |
f0523145 | 494 | sysdep_dir=$srcdir/sysdeps |
f332db02 | 495 | AC_MSG_CHECKING(sysdep dirs) |
f0523145 RM |
496 | dnl We need to use [ and ] for other purposes for a while now. |
497 | changequote(,)dnl | |
28f540f4 RM |
498 | # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1. |
499 | os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`" | |
500 | ||
501 | case "$os" in | |
502 | gnu*) | |
503 | base_os=mach/hurd ;; | |
883bc19b | 504 | netbsd* | 386bsd* | freebsd* | bsdi*) |
28f540f4 | 505 | base_os=unix/bsd/bsd4.4 ;; |
222c4e71 | 506 | osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*) |
28f540f4 | 507 | base_os=unix/bsd ;; |
d586354e | 508 | sysv* | isc* | esix* | sco* | minix* | irix4* | linux*) |
28f540f4 | 509 | base_os=unix/sysv ;; |
f802accb UD |
510 | irix6*) |
511 | base_os=unix/sysv/irix6/$os ;; | |
d586354e | 512 | solaris[2-9]*) |
28f540f4 | 513 | base_os=unix/sysv/sysv4 ;; |
908c3d5b UD |
514 | hpux*) |
515 | base_os=unix/sysv/hpux/$os ;; | |
75d86c1f UD |
516 | aix4.3*) |
517 | base_os=unix/sysv/aix/aix4.3 ;; | |
28f540f4 RM |
518 | none) |
519 | base_os=standalone ;; | |
520 | *) | |
521 | base_os='' ;; | |
522 | esac | |
523 | ||
524 | # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos. | |
525 | tail=$os | |
526 | ostry=$os | |
527 | while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do | |
528 | ostry="$ostry /$o" | |
529 | tail=$o | |
75914335 | 530 | done |
28f540f4 RM |
531 | o=`echo $tail | sed 's/[0-9]*$//'` |
532 | if test $o != $tail; then | |
533 | ostry="$ostry /$o" | |
534 | fi | |
ec4b0518 UD |
535 | # For linux-gnu, try linux-gnu, then linux. |
536 | o=`echo $tail | sed 's/-.*$//'` | |
537 | if test $o != $tail; then | |
538 | ostry="$ostry /$o" | |
539 | fi | |
28f540f4 RM |
540 | |
541 | # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix. | |
542 | base= | |
543 | tail=$base_os | |
544 | while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do | |
545 | set $b | |
546 | base="$base /$1" | |
547 | tail="$2" | |
548 | done | |
549 | ||
ae6b8730 | 550 | # For sparc/sparc32, try sparc/sparc32 and then sparc. |
28f540f4 | 551 | mach= |
a334319f | 552 | tail=$machine |
28f540f4 RM |
553 | while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do |
554 | set $m | |
10ceac89 RM |
555 | # Prepend the machine's FPU directory unless --without-fp. |
556 | if test "$with_fp" = yes; then | |
557 | mach="$mach /$1/fpu" | |
f4b07664 RM |
558 | else |
559 | mach="$mach /$1/nofpu" | |
82d00cab | 560 | fi |
28f540f4 RM |
561 | mach="$mach /$1" |
562 | tail="$2" | |
563 | done | |
564 | ||
565 | dnl We are done with glob and regexp uses of [ and ]; return to autoconf. | |
566 | changequote([,])dnl | |
567 | ||
568 | # Find what sysdep directories exist. | |
569 | sysnames= | |
a334319f UD |
570 | IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:" |
571 | for d in $add_ons_pfx ''; do | |
572 | for b in $base ''; do | |
573 | for m0 in $mach ''; do | |
574 | for v in /$vendor ''; do | |
575 | test "$v" = / && continue | |
576 | for o in /$ostry ''; do | |
577 | test "$o" = / && continue | |
578 | for m in $mach ''; do | |
8f73811b | 579 | for a in $add_ons_sfx ''; do |
a334319f UD |
580 | if test "$m0$b$v$o$m"; then |
581 | try="${d}sysdeps$m0$b$v$o$m$a" | |
8f73811b RM |
582 | test -n "$enable_debug_configure" && |
583 | echo "$0 [DEBUG]: try $try" >&2 | |
a334319f | 584 | if test -d $srcdir/$try; then |
8f73811b RM |
585 | sysnames="$sysnames $try" |
586 | { test -n "$o" || test -n "$b"; } && os_used=t | |
587 | { test -n "$m" || test -n "$m0"; } && machine_used=t | |
588 | fi | |
57ba7bb4 | 589 | fi |
8f73811b | 590 | done |
57ba7bb4 | 591 | done |
28f540f4 RM |
592 | done |
593 | done | |
594 | done | |
595 | done | |
75df54b7 RM |
596 | if test -n "$d"; then |
597 | try="${d}sysdeps/generic" | |
598 | test -n "$enable_debug_configure" && | |
599 | echo "$0 DEBUG: try $try" >&2 | |
600 | if test -d $srcdir/$try; then | |
601 | sysnames="$sysnames $try" | |
602 | fi | |
603 | fi | |
28f540f4 | 604 | done |
a334319f | 605 | IFS="$ac_save_ifs" |
28f540f4 RM |
606 | |
607 | if test -z "$os_used" && test "$os" != none; then | |
608 | AC_MSG_ERROR(Operating system $os is not supported.) | |
609 | fi | |
610 | if test -z "$machine_used" && test "$machine" != none; then | |
611 | AC_MSG_ERROR(The $machine is not supported.) | |
612 | fi | |
613 | ||
614 | # We have now validated the configuration. | |
615 | ||
335aa320 | 616 | |
10ceac89 RM |
617 | # If using ELF, look for an `elf' subdirectory of each machine directory. |
618 | # We prepend these rather than inserting them whereever the machine appears | |
619 | # because things specified by the machine's ELF ABI should override | |
620 | # OS-specific things, and should always be the same for any OS on the | |
621 | # machine (otherwise what's the point of an ABI?). | |
622 | if test "$elf" = yes; then | |
623 | elf_dirs= | |
57ba7bb4 | 624 | for d in $add_ons_pfx ''; do |
57ba7bb4 | 625 | for m in $mach; do |
9c4c0024 | 626 | if test -d $srcdir/${d}sysdeps$m/elf; then |
c2bb8cab | 627 | elf_dirs="$elf_dirs ${d}sysdeps$m/elf" |
57ba7bb4 UD |
628 | fi |
629 | done | |
28f540f4 | 630 | done |
57ba7bb4 | 631 | sysnames="`echo $elf_dirs | sed -e 's,//,/,g'` $sysnames" |
28f540f4 RM |
632 | fi |
633 | ||
335aa320 | 634 | |
28f540f4 RM |
635 | # Expand the list of system names into a full list of directories |
636 | # from each element's parent name and Implies file (if present). | |
637 | set $sysnames | |
e50ec9f9 | 638 | names= |
28f540f4 RM |
639 | while test $# -gt 0; do |
640 | name=$1 | |
641 | shift | |
642 | ||
e50ec9f9 | 643 | case " $names " in *" $name "*) |
f332db02 RM |
644 | # Already in the list. |
645 | continue | |
e50ec9f9 | 646 | esac |
f332db02 RM |
647 | |
648 | # Report each name as we discover it, so there is no long pause in output. | |
0b4ee387 | 649 | echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD |
f332db02 | 650 | |
57ba7bb4 UD |
651 | name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'` |
652 | ||
653 | case $name in | |
654 | /*) xsrcdir= ;; | |
655 | *) xsrcdir=$srcdir/ ;; | |
656 | esac | |
657 | test -n "$enable_debug_configure" && | |
658 | echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2 | |
659 | ||
660 | if test -f $xsrcdir$name/Implies; then | |
28f540f4 | 661 | # Collect more names from the `Implies' file (removing comments). |
57ba7bb4 UD |
662 | implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/Implies`" |
663 | implied= | |
664 | for x in $implied_candidate; do | |
636ccfc8 | 665 | found=no |
57ba7bb4 UD |
666 | if test -d $xsrcdir$name_base/$x; then |
667 | implied="$implied $name_base/$x"; | |
636ccfc8 UD |
668 | found=yes |
669 | fi | |
670 | for d in $add_ons_pfx ''; do | |
671 | try="${d}sysdeps/$x" | |
672 | case $d in | |
673 | /*) try_srcdir= ;; | |
674 | *) try_srcdir=$srcdir/ ;; | |
675 | esac | |
676 | test -n "$enable_debug_configure" && | |
677 | echo "[DEBUG]: $name implied $x try($d) {$try_srcdir}$try" >&2 | |
678 | if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try; | |
679 | then | |
680 | implied="$implied $try" | |
681 | found=yes | |
682 | fi | |
683 | done | |
684 | if test $found = no; then | |
57ba7bb4 UD |
685 | AC_MSG_WARN($name/Implies specifies nonexistent $x) |
686 | fi | |
28f540f4 RM |
687 | done |
688 | else | |
689 | implied= | |
690 | fi | |
691 | ||
692 | # Add NAME to the list of names. | |
693 | names="$names $name" | |
694 | ||
695 | # Find the parent of NAME, using the empty string if it has none. | |
696 | changequote(,)dnl | |
57ba7bb4 | 697 | parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`" |
28f540f4 RM |
698 | changequote([,])dnl |
699 | ||
700 | # Add the names implied by NAME, and NAME's parent (if it has one), to | |
701 | # the list of names to be processed (the argument list). We prepend the | |
702 | # implied names to the list and append the parent. We want implied | |
703 | # directories to come before further directories inferred from the | |
704 | # configuration components; this ensures that for sysv4, unix/common | |
705 | # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*) | |
706 | # after sysv4). | |
707 | sysnames="`echo $implied $* $parent`" | |
708 | test -n "$sysnames" && set $sysnames | |
709 | done | |
710 | ||
711 | # Add the default directories. | |
ecdc196c | 712 | default_sysnames=sysdeps/generic |
2de7874e | 713 | if test "$elf" = yes; then |
ecdc196c | 714 | default_sysnames="sysdeps/generic/elf $default_sysnames" |
2de7874e | 715 | fi |
ecdc196c | 716 | sysnames="$names $default_sysnames" |
f332db02 RM |
717 | AC_SUBST(sysnames) |
718 | # The other names were emitted during the scan. | |
ecdc196c | 719 | AC_MSG_RESULT($default_sysnames) |
28f540f4 | 720 | |
f332db02 RM |
721 | |
722 | ### Locate tools. | |
28f540f4 | 723 | |
28f540f4 | 724 | AC_PROG_INSTALL |
2b80a372 | 725 | if test "$INSTALL" = "${srcdir}/scripts/install-sh -c"; then |
28f540f4 | 726 | # The makefiles need to use a different form to find it in $srcdir. |
2b80a372 | 727 | INSTALL='\$(..)./scripts/install-sh -c' |
28f540f4 | 728 | fi |
0e3426bb | 729 | AC_PROG_LN_S |
ae828bc6 | 730 | |
4baa087a RM |
731 | AC_PROG_CC |
732 | if test $host != $build; then | |
733 | AC_CHECK_PROGS(BUILD_CC, gcc cc) | |
734 | fi | |
735 | AC_SUBST(cross_compiling) | |
736 | AC_PROG_CPP | |
58a7a325 UD |
737 | # We need the C++ compiler only for testing. |
738 | AC_PROG_CXX | |
4baa087a RM |
739 | LIBC_PROG_BINUTILS |
740 | AC_SUBST(MIG)dnl Needed by sysdeps/mach/configure.in | |
741 | ||
742 | # Accept binutils 2.13 or newer. | |
743 | AC_CHECK_PROG_VER(AS, $AS, --version, | |
744 | [GNU assembler.* \([0-9]*\.[0-9.]*\)], | |
73588175 | 745 | [2.1[3-9]*], AS=: critic_missing="$critic_missing as") |
4baa087a RM |
746 | AC_CHECK_PROG_VER(LD, $LD, --version, |
747 | [GNU ld.* \([0-9][0-9]*\.[0-9.]*\)], | |
73588175 | 748 | [2.1[3-9]*], LD=: critic_missing="$critic_missing ld") |
4baa087a | 749 | |
a4301d41 UD |
750 | # We need the physical current working directory. We cannot use the |
751 | # "pwd -P" shell builtin since that's not portable. Instead we try to | |
752 | # find a pwd binary. Note that assigning to the PWD environment | |
753 | # variable might have some interesting side effects, so we don't do | |
754 | # that. | |
755 | AC_PATH_PROG(PWD_P, pwd, no) | |
756 | if test "$PWD_P" = no; then | |
757 | AC_MSG_ERROR(*** A pwd binary could not be found.) | |
758 | fi | |
759 | ||
63bda0c1 | 760 | # These programs are version sensitive. |
3a12e572 | 761 | AC_CHECK_TOOL_PREFIX |
4bca4c17 | 762 | AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v, |
93aed667 | 763 | [version \([egcygnustpi-]*[0-9.]*\)], [3.4* | 4.[0-9]* ], |
90d1d40b | 764 | critic_missing="$critic_missing gcc") |
22e65f8f | 765 | AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version, |
8fc1e2ca | 766 | [GNU Make[^0-9]*\([0-9][0-9.]*\)], |
6b4e880f | 767 | [3.79* | 3.[89]*], critic_missing="$critic_missing make") |
63bda0c1 | 768 | |
22e65f8f | 769 | AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version, |
bdd421cc | 770 | [GNU gettext.* \([0-9]*\.[0-9.]*\)], |
aefdff34 RM |
771 | [0.10.3[6-9]* | 0.10.[4-9][0-9]* | 0.1[1-9]* | 0.[2-9][0-9]* | [1-9].*], |
772 | MSGFMT=: aux_missing="$aux_missing msgfmt") | |
63bda0c1 | 773 | AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, |
8b7fb588 | 774 | [GNU texinfo.* \([0-9][0-9.]*\)], |
aefdff34 RM |
775 | [4.*], |
776 | MAKEINFO=: aux_missing="$aux_missing makeinfo") | |
d6a97a28 | 777 | AC_CHECK_PROG_VER(SED, sed, --version, |
aec103d3 | 778 | [GNU sed version \([0-9]*\.[0-9.]*\)], |
aefdff34 RM |
779 | [3.0[2-9]*|3.[1-9]*|[4-9]*], |
780 | SED=: aux_missing="$aux_missing sed") | |
63bda0c1 | 781 | |
476e7d78 RM |
782 | AC_CHECK_PROGS(AUTOCONF, autoconf, no) |
783 | case "x$AUTOCONF" in | |
784 | xno|x|x:) AUTOCONF=no ;; | |
785 | *) | |
786 | AC_CACHE_CHECK(dnl | |
1400de2e | 787 | whether $AUTOCONF${ACFLAGS:+ }$ACFLAGS works, libc_cv_autoconf_works, [dnl |
476e7d78 RM |
788 | if (cd $srcdir; $AUTOCONF $ACFLAGS configure.in > /dev/null 2>&1); then |
789 | libc_cv_autoconf_works=yes | |
790 | else | |
791 | libc_cv_autoconf_works=no | |
792 | fi]) | |
793 | test $libc_cv_autoconf_works = yes || AUTOCONF=no | |
794 | ;; | |
795 | esac | |
796 | if test "x$with_cvs" = xyes && test "x$AUTOCONF" = xno; then | |
797 | # If --without-cvs they probably won't change configure.in, so no complaints. | |
798 | aux_missing="$aux_missing autoconf" | |
14519931 | 799 | fi |
1400de2e | 800 | |
32a448ed RM |
801 | test -n "$critic_missing" && AC_MSG_ERROR([ |
802 | *** These critical programs are missing or too old:$critic_missing | |
803 | *** Check the INSTALL file for required versions.]) | |
804 | ||
4bca4c17 | 805 | test -n "$aux_missing" && AC_MSG_WARN([ |
9c6fffc0 | 806 | *** These auxiliary programs are missing or incompatible versions:$aux_missing |
63bda0c1 UD |
807 | *** some features will be disabled. |
808 | *** Check the INSTALL file for required versions.]) | |
28f540f4 | 809 | |
dbe7a0f5 UD |
810 | # if using special system headers, find out the compiler's sekrit |
811 | # header directory and add that to the list. NOTE: Only does the right | |
812 | # thing on a system that doesn't need fixincludes. (Not presently a problem.) | |
813 | if test -n "$sysheaders"; then | |
814 | ccheaders=`$CC -print-file-name=include` | |
3d6ce23a RM |
815 | SYSINCLUDES="-nostdinc -isystem $ccheaders \ |
816 | -isystem `echo $sysheaders | sed 's/:/ -isystem /g'`" | |
dbe7a0f5 UD |
817 | fi |
818 | AC_SUBST(SYSINCLUDES) | |
819 | ||
97a47867 UD |
820 | # check if ranlib is necessary |
821 | AC_CACHE_CHECK(whether ranlib is necessary, libc_cv_ranlib_necessary, [dnl | |
822 | cat > conftest.c <<EOF | |
823 | int a; | |
824 | char b; | |
825 | void c(void) {} | |
826 | EOF | |
3217788f | 827 | $CC $CFLAGS $CPPFLAGS -c conftest.c |
72d4c33d | 828 | $AR cr conftest.a conftest.o |
97a47867 UD |
829 | cp conftest.a conftest2.a |
830 | $RANLIB conftest.a | |
831 | if cmp -s conftest.a conftest2.a; then | |
832 | libc_cv_ranlib_necessary=no | |
f38931a9 | 833 | else |
97a47867 UD |
834 | libc_cv_ranlib_necessary=yes |
835 | fi | |
836 | rm -rf conftest*]) | |
837 | if test "$libc_cv_ranlib_necessary" = no; then | |
838 | RANLIB=: | |
f38931a9 | 839 | fi |
f38931a9 | 840 | |
3911660e UD |
841 | # Test if LD_LIBRARY_PATH contains the notation for the current directory |
842 | # since this would lead to problems installing/building glibc. | |
843 | # LD_LIBRARY_PATH contains the current directory if one of the following | |
844 | # is true: | |
845 | # - one of the terminals (":" and ";") is the first or last sign | |
846 | # - two terminals occur directly after each other | |
847 | # - the path contains an element with a dot in it | |
848 | AC_MSG_CHECKING(LD_LIBRARY_PATH variable) | |
849 | changequote(,)dnl | |
850 | case ${LD_LIBRARY_PATH} in | |
851 | [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) | |
b3a86ae1 | 852 | ld_library_path_setting="contains current directory" |
3911660e UD |
853 | ;; |
854 | *) | |
855 | ld_library_path_setting="ok" | |
856 | ;; | |
857 | esac | |
858 | changequote([,])dnl | |
859 | AC_MSG_RESULT($ld_library_path_setting) | |
860 | if test "$ld_library_path_setting" != "ok"; then | |
63bda0c1 UD |
861 | AC_MSG_ERROR([ |
862 | *** LD_LIBRARY_PATH shouldn't contain the current directory when | |
863 | *** building glibc. Please change the environment variable | |
864 | *** and run configure again.]) | |
3911660e | 865 | fi |
8e31cf7e | 866 | |
74bd2300 UD |
867 | AC_CACHE_CHECK(whether GCC supports -static-libgcc, libc_cv_gcc_static_libgcc, [dnl |
868 | if $CC -v -static-libgcc 2>&1 | grep -q 'unrecognized option.*static-libgcc'; then | |
869 | libc_cv_gcc_static_libgcc= | |
870 | else | |
871 | libc_cv_gcc_static_libgcc=-static-libgcc | |
872 | fi]) | |
873 | AC_SUBST(libc_cv_gcc_static_libgcc) | |
874 | ||
84384f5b | 875 | AC_PATH_PROG(BASH, bash, no) |
a18f587d | 876 | if test "$BASH" != no && |
f43ce637 | 877 | $BASH -c 'test "$BASH_VERSINFO" \ |
6973fc01 | 878 | && test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then |
84384f5b UD |
879 | libc_cv_have_bash2=yes |
880 | else | |
881 | libc_cv_have_bash2=no | |
882 | fi | |
883 | AC_SUBST(libc_cv_have_bash2) | |
884 | ||
5290baf0 UD |
885 | dnl We need a ksh compatible shell for tzselect. |
886 | if test "$BASH" = no; then | |
887 | AC_PATH_PROG(KSH, ksh, no) | |
888 | if test "$KSH" = no; then | |
889 | libc_cv_have_ksh=no | |
890 | else | |
891 | libc_cv_have_ksh=yes | |
892 | fi | |
893 | else | |
894 | KSH="$BASH" | |
895 | AC_SUBST(KSH) | |
896 | libc_cv_have_ksh=yes | |
897 | fi | |
898 | AC_SUBST(libc_cv_have_ksh) | |
899 | ||
5aa8ff62 | 900 | AC_PROG_AWK |
c0016081 | 901 | AC_PATH_PROG(PERL, perl, no) |
2fd5d029 RM |
902 | if test "$PERL" != no && |
903 | (eval `$PERL -V:apiversion`; test `expr "$apiversion" \< 5` -ne 0); then | |
904 | PERL=no | |
ecb06196 | 905 | fi |
2f512715 AS |
906 | AC_PATH_PROG(INSTALL_INFO, install-info, no, |
907 | $PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin) | |
2de00372 UD |
908 | AC_PATH_PROG(BISON, bison, no, $PATH:/usr/local/bin:/usr/bin:/bin) |
909 | ||
b8dc6a10 | 910 | AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl |
28f540f4 RM |
911 | echo '#include <stddef.h> |
912 | FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c | |
913 | if eval "$ac_cpp conftest.c 2>/dev/null" \ | |
914 | | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then | |
915 | libc_cv_signed_size_t=no | |
916 | else | |
917 | libc_cv_signed_size_t=yes | |
918 | fi | |
919 | rm -f conftest*]) | |
28f540f4 RM |
920 | if test $libc_cv_signed_size_t = yes; then |
921 | dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings. | |
922 | cat >> confdefs.h <<\EOF | |
923 | #undef __SIZE_TYPE__ | |
924 | #define __SIZE_TYPE__ unsigned | |
925 | EOF | |
926 | fi | |
927 | ||
b8dc6a10 | 928 | AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl |
28f540f4 RM |
929 | AC_TRY_COMPILE(dnl |
930 | [#define __need_size_t | |
931 | #define __need_wchar_t | |
932 | #include <stddef.h> | |
933 | #define __need_NULL | |
934 | #include <stddef.h>], [size_t size; wchar_t wchar; | |
935 | #ifdef offsetof | |
936 | #error stddef.h ignored __need_* | |
937 | #endif | |
938 | if (&size == NULL || &wchar == NULL) abort ();], | |
939 | libc_cv_friendly_stddef=yes, | |
940 | libc_cv_friendly_stddef=no)]) | |
28f540f4 RM |
941 | if test $libc_cv_friendly_stddef = yes; then |
942 | config_vars="$config_vars | |
943 | override stddef.h = # The installed <stddef.h> seems to be libc-friendly." | |
944 | fi | |
945 | ||
b8dc6a10 RM |
946 | AC_CACHE_CHECK(whether we need to use -P to assemble .S files, |
947 | libc_cv_need_minus_P, [dnl | |
28f540f4 RM |
948 | cat > conftest.S <<EOF |
949 | #include "confdefs.h" | |
950 | /* Nothing whatsoever. */ | |
951 | EOF | |
3217788f | 952 | if AC_TRY_COMMAND(${CC-cc} $CPPFLAGS $ASFLAGS -c conftest.S 1>&AS_MESSAGE_LOG_FD); then |
28f540f4 RM |
953 | libc_cv_need_minus_P=no |
954 | else | |
955 | libc_cv_need_minus_P=yes | |
956 | fi | |
957 | rm -f conftest*]) | |
28f540f4 RM |
958 | if test $libc_cv_need_minus_P = yes; then |
959 | config_vars="$config_vars | |
960 | asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives." | |
961 | fi | |
962 | ||
2293395f UD |
963 | AC_MSG_CHECKING(whether .text pseudo-op must be used) |
964 | AC_CACHE_VAL(libc_cv_dot_text, [dnl | |
965 | cat > conftest.s <<EOF | |
966 | .text | |
967 | EOF | |
968 | libc_cv_dot_text= | |
3217788f | 969 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then |
2293395f UD |
970 | libc_cv_dot_text=.text |
971 | fi | |
972 | rm -f conftest*]) | |
973 | if test -z "$libc_cv_dot_text"; then | |
974 | AC_MSG_RESULT(no) | |
975 | else | |
976 | AC_MSG_RESULT(yes) | |
977 | fi | |
978 | ||
b8dc6a10 RM |
979 | AC_CACHE_CHECK(for assembler global-symbol directive, |
980 | libc_cv_asm_global_directive, [dnl | |
9a70fcab | 981 | libc_cv_asm_global_directive=UNKNOWN |
908c3d5b | 982 | for ac_globl in .globl .global .EXPORT; do |
9a70fcab | 983 | cat > conftest.s <<EOF |
2293395f | 984 | ${libc_cv_dot_text} |
908c3d5b | 985 | ${ac_globl} foo |
ae1025be | 986 | foo: |
9a70fcab | 987 | EOF |
3217788f | 988 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then |
9a70fcab UD |
989 | libc_cv_asm_global_directive=${ac_globl} |
990 | fi | |
991 | rm -f conftest* | |
992 | test $libc_cv_asm_global_directive != UNKNOWN && break | |
993 | done]) | |
9a70fcab UD |
994 | if test $libc_cv_asm_global_directive = UNKNOWN; then |
995 | AC_MSG_ERROR(cannot determine asm global directive) | |
996 | else | |
997 | AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive}) | |
998 | fi | |
999 | ||
b8dc6a10 | 1000 | AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl |
9a70fcab | 1001 | cat > conftest.s <<EOF |
2293395f | 1002 | ${libc_cv_dot_text} |
ae1025be | 1003 | foo: |
df2a0c93 | 1004 | .set glibc_conftest_frobozz,foo |
9a70fcab | 1005 | $libc_cv_asm_global_directive glibc_conftest_frobozz |
e215c478 | 1006 | EOF |
df2a0c93 RM |
1007 | # The alpha-dec-osf1 assembler gives only a warning for `.set' |
1008 | # (but it doesn't work), so we must do a linking check to be sure. | |
1009 | cat > conftest1.c <<\EOF | |
1010 | extern int glibc_conftest_frobozz; | |
640f0119 | 1011 | void _start() { glibc_conftest_frobozz = 1; } |
df2a0c93 RM |
1012 | EOF |
1013 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
640f0119 | 1014 | -nostartfiles -nostdlib \ |
0b4ee387 | 1015 | -o conftest conftest.s conftest1.c 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
e215c478 RM |
1016 | libc_cv_asm_set_directive=yes |
1017 | else | |
1018 | libc_cv_asm_set_directive=no | |
1019 | fi | |
65b3cbcb | 1020 | rm -f conftest*]) |
e215c478 RM |
1021 | if test $libc_cv_asm_set_directive = yes; then |
1022 | AC_DEFINE(HAVE_ASM_SET_DIRECTIVE) | |
1023 | fi | |
1024 | ||
b88ac073 RM |
1025 | AC_CACHE_CHECK(for assembler .type directive prefix, |
1026 | libc_cv_asm_type_prefix, [dnl | |
1027 | libc_cv_asm_type_prefix=no | |
1028 | for ac_try_prefix in '@' '%' '#'; do | |
1029 | cat > conftest.s <<EOF | |
1030 | ${libc_cv_dot_text} | |
1031 | ${libc_cv_asm_global_directive} foo | |
1032 | .type foo, ${ac_try_prefix}object | |
1033 | .size foo, 1 | |
1034 | foo: | |
1035 | .byte 1 | |
1036 | EOF | |
3217788f | 1037 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then |
b88ac073 RM |
1038 | libc_cv_asm_type_prefix=${ac_try_prefix} |
1039 | fi | |
1040 | rm -f conftest* | |
1041 | test "x$libc_cv_asm_type_prefix" != xno && break | |
1042 | done]) | |
1043 | if test "x$libc_cv_asm_type_prefix" != xno; then | |
1044 | AC_DEFINE_UNQUOTED(ASM_TYPE_DIRECTIVE_PREFIX, ${libc_cv_asm_type_prefix}) | |
1045 | fi | |
1046 | ||
377a515b UD |
1047 | AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive, |
1048 | [cat > conftest.s <<EOF | |
2293395f | 1049 | ${libc_cv_dot_text} |
4cca6b86 | 1050 | _sym: |
377a515b UD |
1051 | .symver _sym,sym@VERS |
1052 | EOF | |
3217788f | 1053 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
377a515b UD |
1054 | libc_cv_asm_symver_directive=yes |
1055 | else | |
1056 | libc_cv_asm_symver_directive=no | |
1057 | fi | |
1058 | rm -f conftest*]) | |
1059 | AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl | |
1060 | if test $libc_cv_asm_symver_directive = yes; then | |
1061 | cat > conftest.s <<EOF | |
2293395f | 1062 | ${libc_cv_dot_text} |
4cca6b86 | 1063 | _sym: |
377a515b UD |
1064 | .symver _sym,sym@VERS |
1065 | EOF | |
1066 | cat > conftest.map <<EOF | |
f43ce637 | 1067 | VERS_1 { |
377a515b UD |
1068 | global: sym; |
1069 | }; | |
f43ce637 UD |
1070 | |
1071 | VERS_2 { | |
1072 | global: sym; | |
1073 | } VERS_1; | |
377a515b | 1074 | EOF |
3217788f RM |
1075 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
1076 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $LDFLAGS -shared | |
1077 | -o conftest.so conftest.o | |
1078 | -nostartfiles -nostdlib | |
1079 | -Wl,--version-script,conftest.map | |
c2f55635 | 1080 | 1>&AS_MESSAGE_LOG_FD]); |
377a515b UD |
1081 | then |
1082 | libc_cv_ld_version_script_option=yes | |
1083 | else | |
1084 | libc_cv_ld_version_script_option=no | |
1085 | fi | |
1086 | else | |
1087 | libc_cv_ld_version_script_option=no | |
1088 | fi | |
1089 | else | |
1090 | libc_cv_ld_version_script_option=no | |
1091 | fi | |
1092 | rm -f conftest*]) | |
7499a22a RM |
1093 | if test $shared != no && |
1094 | test $libc_cv_asm_symver_directive = yes && | |
650425ce UD |
1095 | test $libc_cv_ld_version_script_option = yes && |
1096 | test $enable_versioning = yes; then | |
377a515b UD |
1097 | VERSIONING=yes |
1098 | AC_DEFINE(DO_VERSIONING) | |
1099 | else | |
1100 | VERSIONING=no | |
1101 | fi | |
1102 | AC_SUBST(VERSIONING) | |
1103 | ||
102a3e8f | 1104 | if test $elf = yes && test $shared != no && test $VERSIONING = no; then |
f43ce637 | 1105 | echo "\ |
f4017d20 | 1106 | *** WARNING: You should not compile GNU libc without versioning. Not using |
f43ce637 UD |
1107 | *** versioning will introduce incompatibilities so that old binaries |
1108 | *** will not run anymore. | |
50304ef0 | 1109 | *** For versioning you need recent binutils (binutils-2.8.1.0.23 or newer)." |
f43ce637 | 1110 | fi |
fd26970f UD |
1111 | if test $elf = yes; then |
1112 | AC_CACHE_CHECK(for .previous assembler directive, | |
1113 | libc_cv_asm_previous_directive, [dnl | |
1114 | cat > conftest.s <<EOF | |
1115 | .section foo_section | |
1116 | .previous | |
1117 | EOF | |
3217788f | 1118 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then |
fd26970f UD |
1119 | libc_cv_asm_previous_directive=yes |
1120 | else | |
1121 | libc_cv_asm_previous_directive=no | |
1122 | fi | |
1123 | rm -f conftest*]) | |
1124 | if test $libc_cv_asm_previous_directive = yes; then | |
1125 | AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE) | |
1126 | else | |
1127 | AC_CACHE_CHECK(for .popsection assembler directive, | |
1128 | libc_cv_asm_popsection_directive, [dnl | |
1129 | cat > conftest.s <<EOF | |
1130 | .pushsection foo_section | |
1131 | .popsection | |
1132 | EOF | |
3217788f | 1133 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then |
fd26970f UD |
1134 | libc_cv_asm_popsection_directive=yes |
1135 | else | |
1136 | libc_cv_asm_popsection_directive=no | |
1137 | fi | |
1138 | rm -f conftest*]) | |
1139 | if test $libc_cv_asm_popsection_directive = yes; then | |
1140 | AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE) | |
1141 | fi | |
1142 | fi | |
2d499f55 UD |
1143 | AC_CACHE_CHECK(for .protected and .hidden assembler directive, |
1144 | libc_cv_asm_protected_directive, [dnl | |
1145 | cat > conftest.s <<EOF | |
1146 | .protected foo | |
1147 | foo: | |
1148 | .hidden bar | |
1149 | bar: | |
1150 | EOF | |
3217788f | 1151 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then |
2d499f55 UD |
1152 | libc_cv_asm_protected_directive=yes |
1153 | else | |
1154 | libc_cv_asm_protected_directive=no | |
1155 | fi | |
1156 | rm -f conftest*]) | |
1157 | AC_SUBST(libc_cv_asm_protected_directive) | |
5688da55 | 1158 | AC_DEFINE(HAVE_PROTECTED) |
9bd64602 | 1159 | AC_DEFINE(HAVE_HIDDEN) |
0fb7851f | 1160 | |
0d01dace UD |
1161 | if test $libc_cv_asm_protected_directive = yes; then |
1162 | AC_CACHE_CHECK(whether __attribute__((visibility())) is supported, | |
1163 | libc_cv_visibility_attribute, | |
1164 | [cat > conftest.c <<EOF | |
1165 | int foo __attribute__ ((visibility ("hidden"))) = 1; | |
1166 | int bar __attribute__ ((visibility ("protected"))) = 1; | |
1167 | EOF | |
1168 | libc_cv_visibility_attribute=no | |
61cea1c3 | 1169 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then |
0d01dace UD |
1170 | if grep '\.hidden.*foo' conftest.s >/dev/null; then |
1171 | if grep '\.protected.*bar' conftest.s >/dev/null; then | |
1172 | libc_cv_visibility_attribute=yes | |
1173 | fi | |
1174 | fi | |
1175 | fi | |
1176 | rm -f conftest.[cs] | |
1177 | ]) | |
1178 | if test $libc_cv_visibility_attribute = yes; then | |
1179 | AC_DEFINE(HAVE_VISIBILITY_ATTRIBUTE) | |
1180 | fi | |
1181 | fi | |
1182 | ||
37ba7d66 UD |
1183 | if test $libc_cv_visibility_attribute = yes; then |
1184 | AC_CACHE_CHECK(for broken __attribute__((visibility())), | |
1185 | libc_cv_broken_visibility_attribute, | |
1186 | [cat > conftest.c <<EOF | |
1187 | int foo (int x); | |
1188 | int bar (int x) __asm__ ("foo") __attribute__ ((visibility ("hidden"))); | |
1189 | int bar (int x) { return x; } | |
1190 | EOF | |
1191 | libc_cv_broken_visibility_attribute=yes | |
61cea1c3 | 1192 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s1>&AS_MESSAGE_LOG_FD); then |
37ba7d66 UD |
1193 | changequote(,)dnl |
1194 | if grep '\.hidden[ _]foo' conftest.s >/dev/null; then | |
1195 | changequote([,])dnl | |
1196 | libc_cv_broken_visibility_attribute=no | |
1197 | fi | |
1198 | fi | |
1199 | rm -f conftest.c conftest.s | |
1200 | ]) | |
1201 | if test $libc_cv_broken_visibility_attribute = yes; then | |
1202 | AC_DEFINE(HAVE_BROKEN_VISIBILITY_ATTRIBUTE) | |
1203 | fi | |
1204 | fi | |
1205 | ||
1206 | AC_CACHE_CHECK(for broken __attribute__((alias())), | |
1207 | libc_cv_broken_alias_attribute, | |
1208 | [cat > conftest.c <<EOF | |
1209 | extern int foo (int x) __asm ("xyzzy"); | |
1210 | int bar (int x) { return x; } | |
48b8e846 UD |
1211 | extern __typeof (bar) foo __attribute ((weak, alias ("bar"))); |
1212 | extern int dfoo; | |
1213 | extern __typeof (dfoo) dfoo __asm ("abccb"); | |
1214 | int dfoo = 1; | |
37ba7d66 UD |
1215 | EOF |
1216 | libc_cv_broken_alias_attribute=yes | |
61cea1c3 | 1217 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then |
48b8e846 UD |
1218 | if grep 'xyzzy' conftest.s >/dev/null && |
1219 | grep 'abccb' conftest.s >/dev/null; then | |
37ba7d66 UD |
1220 | libc_cv_broken_alias_attribute=no |
1221 | fi | |
1222 | fi | |
1223 | rm -f conftest.c conftest.s | |
1224 | ]) | |
1225 | if test $libc_cv_broken_alias_attribute = yes; then | |
1226 | AC_DEFINE(HAVE_BROKEN_ALIAS_ATTRIBUTE) | |
1227 | fi | |
1228 | ||
a334319f | 1229 | if test $libc_cv_visibility_attribute = yes -a $gnu_ld = yes; then |
0d01dace UD |
1230 | AC_CACHE_CHECK(whether to put _rtld_local into .sdata section, |
1231 | libc_cv_have_sdata_section, | |
1232 | [echo "int i;" > conftest.c | |
1233 | libc_cv_have_sdata_section=no | |
a334319f | 1234 | if ${CC-cc} $LDFLAGS -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \ |
0d01dace UD |
1235 | | grep '\.sdata' >/dev/null; then |
1236 | libc_cv_have_sdata_section=yes | |
1237 | fi | |
1238 | rm -f conftest.c conftest.so | |
1239 | ]) | |
1240 | if test $libc_cv_have_sdata_section = yes; then | |
1241 | AC_DEFINE(HAVE_SDATA_SECTION) | |
1242 | fi | |
1243 | fi | |
1244 | ||
5241882c | 1245 | AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support, |
a334319f | 1246 | libc_cv_initfinit_array, [dnl |
5241882c UD |
1247 | cat > conftest.c <<EOF |
1248 | int _start (void) { return 0; } | |
1249 | int __start (void) { return 0; } | |
1250 | int foo (void) { return 1; } | |
2c617417 | 1251 | int (*fp) (void) __attribute__ ((section (".init_array"))) = foo; |
5241882c | 1252 | EOF |
3217788f | 1253 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest conftest.c |
c2f55635 | 1254 | -static -nostartfiles -nostdlib 1>&AS_MESSAGE_LOG_FD]) |
5241882c UD |
1255 | then |
1256 | if readelf -S conftest | fgrep INIT_ARRAY > /dev/null; then | |
a334319f | 1257 | libc_cv_initfinit_array=yes |
5241882c | 1258 | else |
a334319f | 1259 | libc_cv_initfinit_array=no |
5241882c UD |
1260 | fi |
1261 | else | |
a334319f | 1262 | libc_cv_initfinit_array=no |
5241882c UD |
1263 | fi |
1264 | rm -f conftest*]) | |
a334319f UD |
1265 | AC_SUBST(libc_cv_initfinit_array) |
1266 | if test $libc_cv_initfinit_array = yes; then | |
1267 | AC_DEFINE(HAVE_INITFINI_ARRAY) | |
5241882c UD |
1268 | fi |
1269 | ||
c776b3d7 | 1270 | AC_CACHE_CHECK(for libunwind-support in compiler, |
cbdb12de UD |
1271 | libc_cv_cc_with_libunwind, [ |
1272 | cat > conftest.c <<EOF | |
1273 | int main (void) { return 0; } | |
1274 | EOF | |
1275 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -static -o conftest \ | |
1276 | conftest.c -v 2>&1 >/dev/null | grep -q " -lunwind "; then | |
1277 | libc_cv_cc_with_libunwind=yes | |
1278 | else | |
1279 | libc_cv_cc_with_libunwind=no | |
1280 | fi | |
1281 | rm -f conftest*]) | |
c776b3d7 UD |
1282 | AC_SUBST(libc_cv_cc_with_libunwind) |
1283 | if test $libc_cv_cc_with_libunwind = yes; then | |
1284 | AC_DEFINE(HAVE_CC_WITH_LIBUNWIND) | |
1285 | fi | |
1286 | ||
0fb7851f UD |
1287 | AC_CACHE_CHECK(for -z nodelete option, |
1288 | libc_cv_z_nodelete, [dnl | |
1289 | cat > conftest.c <<EOF | |
1290 | int _start (void) { return 42; } | |
1291 | EOF | |
3217788f | 1292 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
a334319f | 1293 | -shared -o conftest.so conftest.c |
35cd3c97 | 1294 | -nostartfiles -nostdlib |
c2f55635 | 1295 | -Wl,--enable-new-dtags,-z,nodelete 1>&AS_MESSAGE_LOG_FD]) |
0fb7851f UD |
1296 | then |
1297 | libc_cv_z_nodelete=yes | |
1298 | else | |
1299 | libc_cv_z_nodelete=no | |
1300 | fi | |
1301 | rm -f conftest*]) | |
1302 | AC_SUBST(libc_cv_z_nodelete) | |
2f54c82d UD |
1303 | |
1304 | AC_CACHE_CHECK(for -z nodlopen option, | |
1305 | libc_cv_z_nodlopen, [dnl | |
1306 | cat > conftest.c <<EOF | |
1307 | int _start (void) { return 42; } | |
1308 | EOF | |
3217788f | 1309 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
a334319f | 1310 | -shared -o conftest.so conftest.c |
35cd3c97 | 1311 | -nostartfiles -nostdlib |
c2f55635 | 1312 | -Wl,--enable-new-dtags,-z,nodlopen 1>&AS_MESSAGE_LOG_FD]) |
2f54c82d UD |
1313 | then |
1314 | libc_cv_z_nodlopen=yes | |
1315 | else | |
1316 | libc_cv_z_nodlopen=no | |
1317 | fi | |
1318 | rm -f conftest*]) | |
1319 | AC_SUBST(libc_cv_z_nodlopen) | |
5d916713 UD |
1320 | |
1321 | AC_CACHE_CHECK(for -z initfirst option, | |
1322 | libc_cv_z_initfirst, [dnl | |
1323 | cat > conftest.c <<EOF | |
1324 | int _start (void) { return 42; } | |
1325 | EOF | |
3217788f | 1326 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
a334319f | 1327 | -shared -o conftest.so conftest.c |
35cd3c97 | 1328 | -nostartfiles -nostdlib |
c2f55635 | 1329 | -Wl,--enable-new-dtags,-z,initfirst 1>&AS_MESSAGE_LOG_FD]) |
5d916713 UD |
1330 | then |
1331 | libc_cv_z_initfirst=yes | |
1332 | else | |
1333 | libc_cv_z_initfirst=no | |
1334 | fi | |
1335 | rm -f conftest*]) | |
1336 | AC_SUBST(libc_cv_z_initfirst) | |
639c3248 | 1337 | |
ed20b3d9 UD |
1338 | AC_CACHE_CHECK(for -z relro option, |
1339 | libc_cv_z_relro, [dnl | |
54beacab | 1340 | libc_cv_z_relro=no |
ed20b3d9 UD |
1341 | if AC_TRY_COMMAND([${CC-cc} -v --help 2>&1|grep "z relro" 1>&AS_MESSAGE_LOG_FD]) |
1342 | then | |
54beacab UD |
1343 | if AC_TRY_COMMAND([${CC-cc} -Wl,--verbose 2>&1|grep DATA_SEGMENT_RELRO_END 1>&AS_MESSAGE_LOG_FD]) |
1344 | then | |
1345 | libc_cv_z_relro=yes | |
1346 | fi | |
ed20b3d9 UD |
1347 | fi]) |
1348 | AC_SUBST(libc_cv_z_relro) | |
cb6ee14a UD |
1349 | if test $libc_cv_z_relro = yes; then |
1350 | AC_DEFINE(HAVE_Z_RELRO) | |
1351 | fi | |
ed20b3d9 | 1352 | |
639c3248 UD |
1353 | AC_CACHE_CHECK(for -Bgroup option, |
1354 | libc_cv_Bgroup, [dnl | |
1355 | cat > conftest.c <<EOF | |
1356 | int _start (void) { return 42; } | |
1357 | EOF | |
3217788f | 1358 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
a334319f | 1359 | -shared -o conftest.so conftest.c |
3217788f | 1360 | -Wl,-Bgroup -nostdlib 1>&AS_MESSAGE_LOG_FD]) |
639c3248 UD |
1361 | then |
1362 | libc_cv_Bgroup=yes | |
1363 | else | |
1364 | libc_cv_Bgroup=no | |
1365 | fi | |
1366 | rm -f conftest*]) | |
1367 | AC_SUBST(libc_cv_Bgroup) | |
a711b01d | 1368 | |
cdbf48be UD |
1369 | AC_CACHE_CHECK(for libgcc_s suffix, |
1370 | libc_cv_libgcc_s_suffix, [dnl | |
1371 | cat > conftest.c <<EOF | |
1372 | int main (void) { return 0; } | |
1373 | EOF | |
1374 | changequote(,)dnl | |
1375 | libc_cv_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
a334319f | 1376 | -shared -shared-libgcc -o conftest.so \ |
cdbf48be UD |
1377 | conftest.c -v 2>&1 >/dev/null \ |
1378 | | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'` | |
1379 | changequote([,])dnl | |
1380 | rm -f conftest*]) | |
1381 | AC_SUBST(libc_cv_libgcc_s_suffix) | |
1382 | ||
feca5e0b UD |
1383 | AC_CACHE_CHECK(for --as-needed option, |
1384 | libc_cv_as_needed, [dnl | |
1385 | cat > conftest.c <<EOF | |
1386 | int main (void) { return 0; } | |
1387 | EOF | |
1388 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS | |
a334319f | 1389 | -shared -o conftest.so conftest.c |
cdbf48be UD |
1390 | -lgcc_s$libc_cv_libgcc_s_suffix -Wl,--as-needed |
1391 | -nostdlib 1>&AS_MESSAGE_LOG_FD]) | |
feca5e0b UD |
1392 | then |
1393 | libc_cv_as_needed=yes | |
1394 | else | |
1395 | libc_cv_as_needed=no | |
1396 | fi | |
1397 | rm -f conftest*]) | |
1398 | AC_SUBST(libc_cv_as_needed) | |
1399 | ||
35915ec8 UD |
1400 | ASFLAGS_config= |
1401 | AC_CACHE_CHECK(whether --noexecstack is desirable for .S files, | |
1402 | libc_cv_as_noexecstack, [dnl | |
1403 | cat > conftest.c <<EOF | |
1404 | void foo (void) { } | |
1405 | EOF | |
1406 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS | |
1407 | -S -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD]) \ | |
1408 | && grep -q .note.GNU-stack conftest.s \ | |
1409 | && AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -Wa,--noexecstack | |
1410 | -c -o conftest.o conftest.s 1>&AS_MESSAGE_LOG_FD]) | |
1411 | then | |
1412 | libc_cv_as_noexecstack=yes | |
1413 | else | |
1414 | libc_cv_as_noexecstack=no | |
1415 | fi | |
1416 | rm -f conftest*]) | |
1417 | if test $libc_cv_as_noexecstack = yes; then | |
1418 | ASFLAGS_config="$ASFLAGS_config -Wa,--noexecstack" | |
1419 | fi | |
1420 | AC_SUBST(ASFLAGS_config) | |
2abf9ff1 | 1421 | |
a711b01d UD |
1422 | AC_CACHE_CHECK(for -z combreloc, |
1423 | libc_cv_z_combreloc, [dnl | |
1424 | cat > conftest.c <<EOF | |
d555194c UD |
1425 | extern int bar (int); |
1426 | extern int mumble; | |
1427 | int foo (void) { return bar (mumble); } | |
a711b01d | 1428 | EOF |
3217788f | 1429 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
a334319f | 1430 | -shared -o conftest.so conftest.c |
35cd3c97 | 1431 | -nostdlib -nostartfiles |
c2f55635 | 1432 | -Wl,-z,combreloc 1>&AS_MESSAGE_LOG_FD]) |
a711b01d UD |
1433 | then |
1434 | dnl The following test is a bit weak. We must use a tool which can test | |
1435 | dnl cross-platform since the gcc used can be a cross compiler. Without | |
1436 | dnl introducing new options this is not easily doable. Instead use a tool | |
1437 | dnl which always is cross-platform: readelf. To detect whether -z combreloc | |
1438 | dnl look for a section named .rel.dyn. | |
fdde8349 UD |
1439 | if readelf -S conftest.so | grep '\.rel\(a\|\)\.dyn' > /dev/null; then |
1440 | libc_cv_z_combreloc=yes | |
1441 | else | |
1442 | libc_cv_z_combreloc=no | |
a711b01d | 1443 | fi |
fdde8349 UD |
1444 | else |
1445 | libc_cv_z_combreloc=no | |
a711b01d UD |
1446 | fi |
1447 | rm -f conftest*]) | |
fdde8349 UD |
1448 | if test "$libc_cv_z_combreloc" = yes; then |
1449 | AC_DEFINE(HAVE_Z_COMBRELOC) | |
1450 | fi | |
2abf9ff1 RM |
1451 | AC_SUBST(libc_cv_z_combreloc) |
1452 | ||
1453 | AC_CACHE_CHECK(for -z execstack, | |
1454 | libc_cv_z_execstack, [dnl | |
1455 | cat > conftest.c <<EOF | |
1456 | int _start (void) { return 42; } | |
1457 | EOF | |
1458 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS | |
a334319f | 1459 | -shared -o conftest.so conftest.c |
2abf9ff1 RM |
1460 | -Wl,-z,execstack -nostdlib |
1461 | 1>&AS_MESSAGE_LOG_FD]) | |
1462 | then | |
1463 | libc_cv_z_execstack=yes | |
1464 | else | |
1465 | libc_cv_z_execstack=no | |
1466 | fi | |
1467 | rm -f conftest*]) | |
1468 | AC_SUBST(libc_cv_z_execstack) | |
c9c60884 UD |
1469 | |
1470 | AC_CACHE_CHECK(for -fpie, libc_cv_fpie, [dnl | |
1471 | cat > conftest.c <<EOF | |
1472 | int foo; | |
49803108 | 1473 | main () { return 0;} |
c9c60884 UD |
1474 | EOF |
1475 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -pie -fpie | |
1476 | -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]) | |
1477 | then | |
1478 | libc_cv_fpie=yes | |
1479 | else | |
1480 | libc_cv_fpie=no | |
1481 | fi | |
1482 | rm -f conftest*]) | |
1483 | ||
1484 | AC_SUBST(libc_cv_fpie) | |
fd26970f | 1485 | fi |
49803108 | 1486 | |
a334319f | 1487 | AC_CACHE_CHECK(for -fno-unit-at-a-time, libc_cv_fno_unit_at_a_time, [dnl |
49803108 AJ |
1488 | cat > conftest.c <<EOF |
1489 | int foo; | |
1490 | EOF | |
a334319f | 1491 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -fno-unit-at-a-time |
49803108 AJ |
1492 | conftest.c 1>&AS_MESSAGE_LOG_FD]) |
1493 | then | |
a334319f | 1494 | libc_cv_fno_unit_at_a_time=yes |
49803108 | 1495 | else |
a334319f | 1496 | libc_cv_fno_unit_at_a_time=no |
49803108 AJ |
1497 | fi |
1498 | rm -f conftest*]) | |
a334319f | 1499 | if test $libc_cv_fno_unit_at_a_time = yes; then |
49803108 AJ |
1500 | fno_unit_at_a_time=-fno-unit-at-a-time |
1501 | fi | |
1502 | AC_SUBST(fno_unit_at_a_time) | |
fd26970f | 1503 | |
b8dc6a10 RM |
1504 | if test $elf != yes; then |
1505 | AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini, | |
1506 | [AC_TRY_COMPILE(, [asm (".section .init"); | |
84724245 | 1507 | asm (".section .fini"); |
2293395f | 1508 | asm ("${libc_cv_dot_text}");], |
b8dc6a10 RM |
1509 | libc_cv_have_initfini=yes, |
1510 | libc_cv_have_initfini=no)]) | |
1511 | AC_SUBST(libc_cv_have_initfini)dnl | |
1512 | if test $libc_cv_have_initfini = yes; then | |
1513 | AC_DEFINE(HAVE_INITFINI) | |
1514 | fi | |
1515 | fi | |
e215c478 | 1516 | |
a334319f | 1517 | if test $elf = yes -a $gnu_ld = yes; then |
e26dd47f UD |
1518 | AC_CACHE_CHECK(whether cc puts quotes around section names, |
1519 | libc_cv_have_section_quotes, | |
1520 | [cat > conftest.c <<EOF | |
1521 | static const int foo | |
1522 | __attribute__ ((section ("bar"))) = 1; | |
1523 | EOF | |
1524 | if ${CC-cc} -S conftest.c -o conftest.s; then | |
1525 | if grep '\.section.*"bar"' conftest.s >/dev/null; then | |
1526 | libc_cv_have_section_quotes=yes | |
1527 | else | |
1528 | libc_cv_have_section_quotes=no | |
1529 | fi | |
1530 | else | |
1531 | libc_cv_have_section_quotes=unknown | |
1532 | fi | |
1533 | rm -f conftest.[cs] | |
1534 | ]) | |
1535 | if test $libc_cv_have_section_quotes = yes; then | |
1536 | AC_DEFINE(HAVE_SECTION_QUOTES) | |
1537 | fi | |
1538 | fi | |
1539 | ||
9a0a462c UD |
1540 | dnl AC_CHECK_ASM_UNDERSCORE([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]) |
1541 | AC_DEFUN(AC_CHECK_ASM_UNDERSCORE, | |
1542 | [cat > conftest.$ac_ext <<EOF | |
1543 | dnl This sometimes fails to find confdefs.h, for some reason. | |
85dd1003 UD |
1544 | dnl [#]line $LINENO "[$]0" |
1545 | [#]line $LINENO "configure" | |
9a0a462c UD |
1546 | #include "confdefs.h" |
1547 | void underscore_test(void) { | |
1548 | return; } | |
1549 | EOF | |
1550 | if AC_TRY_EVAL(ac_compile); then | |
1551 | if grep _underscore_test conftest* >/dev/null; then | |
1552 | ifelse([$1], , :, [rm -f conftest* | |
1553 | $1]) | |
1554 | else | |
1555 | ifelse([$2], , , [rm -f conftest* | |
1556 | $2]) | |
1557 | fi | |
1558 | else | |
c2f55635 RM |
1559 | echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD |
1560 | cat conftest.$ac_ext >&AS_MESSAGE_LOG_FD | |
9a0a462c UD |
1561 | ifelse([$2], , , [rm -f conftest* |
1562 | $2]) | |
1563 | fi | |
1564 | rm -f conftest*]) | |
1565 | ||
c224a18a RM |
1566 | if test $elf = yes; then |
1567 | libc_cv_asm_underscores=no | |
1568 | else | |
9a0a462c UD |
1569 | if test $ac_cv_prog_cc_works = yes; then |
1570 | AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores, | |
1571 | [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();], | |
1572 | libc_cv_asm_underscores=yes, | |
1573 | libc_cv_asm_underscores=no)]) | |
1574 | else | |
1575 | AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores, | |
1576 | [AC_CHECK_ASM_UNDERSCORE(libc_cv_asm_underscores=yes, | |
1577 | libc_cv_asm_underscores=no)]) | |
1578 | fi | |
c224a18a RM |
1579 | fi |
1580 | if test $libc_cv_asm_underscores = no; then | |
1581 | AC_DEFINE(NO_UNDERSCORES) | |
1582 | fi | |
1583 | ||
1584 | if test $elf = yes; then | |
1585 | libc_cv_weak_symbols=yes | |
9a97d1f7 UD |
1586 | fi |
1587 | ||
1588 | AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive, | |
75d86c1f | 1589 | [dnl |
c224a18a | 1590 | cat > conftest.s <<EOF |
2293395f | 1591 | ${libc_cv_dot_text} |
c224a18a | 1592 | ${libc_cv_asm_global_directive} foo |
ae1025be | 1593 | foo: |
c224a18a RM |
1594 | .weak foo |
1595 | .weak bar; bar = foo | |
1596 | EOF | |
3217788f | 1597 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then |
9a97d1f7 UD |
1598 | libc_cv_asm_weak_directive=yes |
1599 | else | |
1600 | libc_cv_asm_weak_directive=no | |
1601 | fi | |
1602 | rm -f conftest*]) | |
c224a18a | 1603 | |
c8cf0b14 | 1604 | if test $libc_cv_asm_weak_directive = no; then |
c224a18a RM |
1605 | AC_CACHE_CHECK(for assembler .weakext directive, |
1606 | libc_cv_asm_weakext_directive, | |
1607 | [dnl | |
1608 | cat > conftest.s <<EOF | |
2293395f | 1609 | ${libc_cv_dot_text} |
c224a18a | 1610 | ${libc_cv_asm_global_directive} foo |
ae1025be | 1611 | foo: |
f802accb UD |
1612 | .weakext bar foo |
1613 | .weakext baz | |
1614 | ${libc_cv_asm_global_directive} baz | |
9a97d1f7 | 1615 | baz: |
c224a18a | 1616 | EOF |
3217788f | 1617 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then |
c224a18a RM |
1618 | libc_cv_asm_weakext_directive=yes |
1619 | else | |
1620 | libc_cv_asm_weakext_directive=no | |
1621 | fi | |
1622 | rm -f conftest*]) | |
1623 | ||
9a97d1f7 | 1624 | fi # no .weak |
c224a18a | 1625 | |
ffcf9634 | 1626 | if test $libc_cv_asm_weak_directive = yes; then |
c224a18a | 1627 | AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE) |
ffcf9634 | 1628 | elif test $libc_cv_asm_weakext_directive = yes; then |
c224a18a RM |
1629 | AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE) |
1630 | fi | |
1631 | ||
50189569 AJ |
1632 | AC_CACHE_CHECK(whether CFI directives are supported, libc_cv_asm_cfi_directives, [dnl |
1633 | cat > conftest.s <<EOF | |
1634 | .text | |
d0868826 | 1635 | .type func,%function |
50189569 AJ |
1636 | func: |
1637 | .cfi_startproc | |
f212e8dc | 1638 | .cfi_remember_state |
a334319f | 1639 | .cfi_rel_offset 1, 0 |
50189569 AJ |
1640 | .cfi_endproc |
1641 | EOF | |
1642 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
1643 | libc_cv_asm_cfi_directives=yes | |
1644 | else | |
1645 | libc_cv_asm_cfi_directives=no | |
1646 | fi | |
1647 | rm -f conftest*]) | |
1648 | if test $libc_cv_asm_cfi_directives = yes; then | |
1649 | AC_DEFINE(HAVE_ASM_CFI_DIRECTIVES) | |
bcd5f356 | 1650 | fi |
50189569 | 1651 | |
a641835a RM |
1652 | AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl |
1653 | cat > conftest.c <<\EOF | |
5f0e6fc7 | 1654 | _start () {} |
dcf0671d UD |
1655 | int __eh_pc; |
1656 | __throw () {} | |
a641835a | 1657 | EOF |
dcea62dd | 1658 | dnl No \ in command here because it ends up inside ''. |
3217788f | 1659 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dcea62dd | 1660 | -nostdlib -nostartfiles -Wl,--no-whole-archive |
c2f55635 | 1661 | -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then |
a641835a RM |
1662 | libc_cv_ld_no_whole_archive=yes |
1663 | else | |
1664 | libc_cv_ld_no_whole_archive=no | |
1665 | fi | |
1666 | rm -f conftest*]) | |
b17277cf UD |
1667 | if test $libc_cv_ld_no_whole_archive = yes; then |
1668 | no_whole_archive=-Wl,--no-whole-archive | |
1669 | fi | |
1670 | AC_SUBST(no_whole_archive)dnl | |
a641835a | 1671 | |
dff14448 | 1672 | AC_CACHE_CHECK(for gcc -fexceptions, libc_cv_gcc_exceptions, [dnl |
b236e99d UD |
1673 | cat > conftest.c <<\EOF |
1674 | _start () {} | |
1675 | int __eh_pc; | |
1676 | __throw () {} | |
1677 | EOF | |
1678 | dnl No \ in command here because it ends up inside ''. | |
3217788f | 1679 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dff14448 | 1680 | -nostdlib -nostartfiles -fexceptions |
c2f55635 | 1681 | -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then |
dff14448 | 1682 | libc_cv_gcc_exceptions=yes |
b236e99d | 1683 | else |
dff14448 | 1684 | libc_cv_gcc_exceptions=no |
b236e99d UD |
1685 | fi |
1686 | rm -f conftest*]) | |
dff14448 UD |
1687 | if test $libc_cv_gcc_exceptions = yes; then |
1688 | exceptions=-fexceptions | |
b17277cf | 1689 | fi |
dff14448 | 1690 | AC_SUBST(exceptions)dnl |
b236e99d | 1691 | |
66000494 UD |
1692 | if test "$host_cpu" = powerpc ; then |
1693 | # Check for a bug present in at least versions 2.8.x of GCC | |
1694 | # and versions 1.0.x of EGCS. | |
1695 | AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl | |
1696 | AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],, | |
1697 | libc_cv_c_asmcr0_bug='no', | |
1698 | libc_cv_c_asmcr0_bug='yes')]) | |
1699 | if test "$libc_cv_c_asmcr0_bug" != 'no'; then | |
1700 | AC_DEFINE(BROKEN_PPC_ASM_CR0) | |
1701 | fi | |
1702 | fi | |
1703 | ||
a334319f UD |
1704 | AC_CACHE_CHECK(for DWARF2 unwind info support, libc_cv_gcc_dwarf2_unwind_info, |
1705 | [cat > conftest.c <<EOF | |
1706 | #line $LINENO "configure" | |
1707 | static char *__EH_FRAME_BEGIN__; | |
1708 | _start () | |
1709 | { | |
1710 | #ifdef CHECK__register_frame | |
1711 | __register_frame (__EH_FRAME_BEGIN__); | |
1712 | __deregister_frame (__EH_FRAME_BEGIN__); | |
1713 | #endif | |
1714 | #ifdef CHECK__register_frame_info | |
1715 | __register_frame_info (__EH_FRAME_BEGIN__); | |
1716 | __deregister_frame_info (__EH_FRAME_BEGIN__); | |
1717 | #endif | |
1718 | } | |
1719 | int __eh_pc; | |
1720 | __throw () {} | |
1721 | /* FIXME: this is fragile. */ | |
1722 | malloc () {} | |
1723 | strcmp () {} | |
1724 | strlen () {} | |
1725 | memcpy () {} | |
1726 | memset () {} | |
1727 | free () {} | |
1728 | abort () {} | |
1729 | __bzero () {} | |
1730 | dl_iterate_phdr () {} | |
1731 | EOF | |
1732 | libc_unwind_check="${CC-cc} $CFLAGS $CPPFLAGS -DCHECK__register_frame_info \ | |
1733 | $LDFLAGS \ | |
1734 | -nostdlib -nostartfiles -o conftest conftest.c \ | |
1735 | -lgcc" | |
1736 | # Some platforms' specs put -lgcc first. The second one doesn't hurt. | |
1737 | if AC_TRY_COMMAND([$libc_unwind_check >&AS_MESSAGE_LOG_FD]) || | |
1738 | AC_TRY_COMMAND([$libc_unwind_check -lgcc_eh -lgcc >&AS_MESSAGE_LOG_FD]) | |
1739 | then | |
1740 | if $libc_unwind_check -v 2>&1 >/dev/null \ | |
1741 | | grep -- --eh-frame-hdr 2>&1 >/dev/null; then | |
1742 | libc_cv_gcc_dwarf2_unwind_info=no_registry_needed | |
1743 | else | |
1744 | libc_cv_gcc_dwarf2_unwind_info=static | |
1745 | fi | |
1746 | else | |
1747 | libc_cv_gcc_dwarf2_unwind_info=no | |
1748 | fi | |
1749 | if test $libc_cv_gcc_dwarf2_unwind_info = no; then | |
1750 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -DCHECK__register_frame | |
1751 | $LDFLAGS -nostdlib -nostartfiles | |
1752 | -o conftest conftest.c -lgcc >&AS_MESSAGE_LOG_FD]); then | |
1753 | libc_cv_gcc_dwarf2_unwind_info=yes | |
1754 | else | |
1755 | libc_cv_gcc_dwarf2_unwind_info=no | |
1756 | fi | |
1757 | fi | |
1758 | rm -f conftest*]) | |
1759 | case $libc_cv_gcc_dwarf2_unwind_info in | |
1760 | yes) | |
1761 | AC_DEFINE(HAVE_DWARF2_UNWIND_INFO) | |
1762 | ;; | |
1763 | static) | |
1764 | AC_DEFINE(HAVE_DWARF2_UNWIND_INFO) | |
1765 | AC_DEFINE(HAVE_DWARF2_UNWIND_INFO_STATIC) | |
1766 | ;; | |
1767 | esac | |
1768 | ||
a8eab8b1 UD |
1769 | dnl Check whether compiler understands __builtin_expect. |
1770 | AC_CACHE_CHECK(for __builtin_expect, libc_cv_gcc_builtin_expect, | |
1771 | [cat > conftest.c <<EOF | |
85dd1003 | 1772 | #line $LINENO "configure" |
a8eab8b1 UD |
1773 | int foo (int a) |
1774 | { | |
1775 | a = __builtin_expect (a, 10); | |
1776 | return a == 10 ? 0 : 1; | |
1777 | } | |
1778 | EOF | |
1779 | dnl No \ in command here because it ends up inside ''. | |
3217788f | 1780 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostdlib -nostartfiles |
c2f55635 | 1781 | -o conftest conftest.c -lgcc >&AS_MESSAGE_LOG_FD]); then |
a8eab8b1 UD |
1782 | libc_cv_gcc_builtin_expect=yes |
1783 | else | |
1784 | libc_cv_gcc_builtin_expect=no | |
1785 | fi | |
1786 | rm -f conftest*]) | |
1787 | if test "$libc_cv_gcc_builtin_expect" = yes; then | |
1788 | AC_DEFINE(HAVE_BUILTIN_EXPECT) | |
1789 | fi | |
1790 | ||
d555194c UD |
1791 | AC_CACHE_CHECK(for __builtin_memset, libc_cv_gcc_builtin_memset, [dnl |
1792 | cat > conftest.c <<\EOF | |
1793 | void zero (void *x) | |
1794 | { | |
a52d1562 | 1795 | __builtin_memset (x, 0, 1000); |
d555194c UD |
1796 | } |
1797 | EOF | |
1798 | dnl | |
1799 | if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "memset" > /dev/null]); | |
1800 | then | |
1801 | libc_cv_gcc_builtin_memset=no | |
1802 | else | |
1803 | libc_cv_gcc_builtin_memset=yes | |
1804 | fi | |
1805 | rm -f conftest* ]) | |
1806 | if test "$libc_cv_gcc_builtin_memset" = yes ; then | |
1807 | AC_DEFINE(HAVE_BUILTIN_MEMSET) | |
1808 | fi | |
1809 | ||
85dd1003 UD |
1810 | AC_CACHE_CHECK(for redirection of built-in functions, libc_cv_gcc_builtin_redirection, [dnl |
1811 | cat > conftest.c <<\EOF | |
1812 | extern char *strstr (const char *, const char *) __asm ("my_strstr"); | |
1813 | char *foo (const char *a, const char *b) | |
1814 | { | |
1815 | return __builtin_strstr (a, b); | |
1816 | } | |
1817 | EOF | |
1818 | dnl | |
1819 | if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "my_strstr" > /dev/null]); | |
1820 | then | |
1821 | libc_cv_gcc_builtin_redirection=yes | |
1822 | else | |
1823 | libc_cv_gcc_builtin_redirection=no | |
1824 | fi | |
1825 | rm -f conftest* ]) | |
1826 | if test "$libc_cv_gcc_builtin_redirection" = yes ; then | |
1827 | AC_DEFINE(HAVE_BUILTIN_REDIRECTION) | |
1828 | fi | |
1829 | ||
a334319f UD |
1830 | dnl Check whether the compiler supports subtraction of local labels. |
1831 | AC_CACHE_CHECK(for local label subtraction, libc_cv_gcc_subtract_local_labels, | |
1832 | [cat > conftest.c <<EOF | |
1833 | changequote(,)dnl | |
1834 | #line $LINENO "configure" | |
1835 | int foo (int a) | |
1836 | { | |
1837 | static const int ar[] = { &&l1 - &&l1, &&l2 - &&l1 }; | |
1838 | void *p = &&l1 + ar[a]; | |
1839 | goto *p; | |
1840 | l1: | |
1841 | return 1; | |
1842 | l2: | |
1843 | return 2; | |
1844 | } | |
1845 | changequote([,])dnl | |
1846 | EOF | |
1847 | dnl No \ in command here because it ends up inside ''. | |
1848 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostdlib -nostartfiles | |
1849 | -o conftest conftest.c -lgcc >&AS_MESSAGE_LOG_FD]); then | |
1850 | libc_cv_gcc_subtract_local_labels=yes | |
1851 | else | |
1852 | libc_cv_gcc_subtract_local_labels=no | |
1853 | fi | |
1854 | rm -f conftest*]) | |
1855 | if test "$libc_cv_gcc_subtract_local_labels" = yes; then | |
1856 | AC_DEFINE(HAVE_SUBTRACT_LOCAL_LABELS) | |
1857 | fi | |
1858 | ||
739d440d | 1859 | dnl Check whether the compiler supports the __thread keyword. |
5b8f26b4 RM |
1860 | if test "x$use__thread" != xno; then |
1861 | AC_CACHE_CHECK([for __thread], libc_cv_gcc___thread, | |
1862 | [cat > conftest.c <<\EOF | |
fbb18522 RM |
1863 | __thread int a = 42; |
1864 | EOF | |
3217788f | 1865 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c >&AS_MESSAGE_LOG_FD]); then |
5b8f26b4 RM |
1866 | libc_cv_gcc___thread=yes |
1867 | else | |
1868 | libc_cv_gcc___thread=no | |
1869 | fi | |
1870 | rm -f conftest*]) | |
1871 | if test "$libc_cv_gcc___thread" = yes; then | |
1872 | AC_DEFINE(HAVE___THREAD) | |
1873 | fi | |
739d440d UD |
1874 | else |
1875 | libc_cv_gcc___thread=no | |
1876 | fi | |
739d440d | 1877 | |
9b21e6bc RM |
1878 | if test "$libc_cv_gcc___thread" = yes; then |
1879 | dnl Check whether the compiler supports the tls_model attribute. | |
1880 | AC_CACHE_CHECK([for tls_model attribute], libc_cv_gcc_tls_model_attr, [dnl | |
1881 | cat > conftest.c <<\EOF | |
1882 | extern __thread int a __attribute__((tls_model ("initial-exec"))); | |
1883 | EOF | |
3217788f | 1884 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -Werror conftest.c >&AS_MESSAGE_LOG_FD]); then |
9b21e6bc RM |
1885 | libc_cv_gcc_tls_model_attr=yes |
1886 | else | |
1887 | libc_cv_gcc_tls_model_attr=no | |
1888 | fi | |
1889 | rm -f conftest*]) | |
1890 | if test "$libc_cv_gcc_tls_model_attr" = yes; then | |
1891 | AC_DEFINE(HAVE_TLS_MODEL_ATTRIBUTE) | |
1892 | fi | |
1893 | fi | |
739d440d | 1894 | |
c8f3e6db UD |
1895 | dnl Check whether we have the gd library available. |
1896 | AC_MSG_CHECKING(for libgd) | |
6dab8688 UD |
1897 | if test "$with_gd" != "no"; then |
1898 | old_CFLAGS="$CFLAGS" | |
1899 | CFLAGS="$CFLAGS $libgd_include" | |
1900 | old_LDFLAGS="$LDFLAGS" | |
1901 | LDFLAGS="$LDFLAGS $libgd_ldflags" | |
1902 | old_LIBS="$LIBS" | |
1903 | LIBS="$LIBS -lgd -lpng -lz -lm" | |
1904 | AC_TRY_LINK([#include <gd.h>], [gdImagePng (0, 0)], LIBGD=yes, LIBGD=no) | |
1905 | CFLAGS="$old_CFLAGS" | |
1906 | LDFLAGS="$old_LDFLAGS" | |
1907 | LIBS="$old_LIBS" | |
1908 | else | |
1909 | LIBGD=no | |
1910 | fi | |
c8f3e6db UD |
1911 | AC_MSG_RESULT($LIBGD) |
1912 | AC_SUBST(LIBGD) | |
3d558f4e | 1913 | |
2fff3d93 UD |
1914 | # SELinux detection |
1915 | if test x$with_selinux = xno ; then | |
1916 | have_selinux=no; | |
1917 | else | |
1918 | # See if we have the SELinux library | |
1919 | AC_CHECK_LIB(selinux, is_selinux_enabled, | |
1920 | have_selinux=yes, have_selinux=no) | |
1921 | # See if we have the SELinux header with the NSCD permissions in it. | |
1922 | if test x$have_selinux = xyes ; then | |
1923 | AC_MSG_CHECKING([for NSCD Flask permissions in selinux/av_permissions.h]) | |
1924 | AC_TRY_COMPILE([#include <selinux/av_permissions.h>], | |
1925 | [#ifdef NSCD__SHMEMHOST | |
1926 | return 0; | |
1927 | #else | |
1928 | #error NSCD__SHMEMHOST not defined | |
1929 | #endif], | |
1930 | have_selinux=yes, have_selinux=no) | |
1931 | AC_MSG_RESULT($have_selinux) | |
1932 | fi | |
1933 | ||
49155d51 | 1934 | if test x$with_selinux = xyes ; then |
2fff3d93 | 1935 | if test x$have_selinux = xno ; then |
49155d51 | 1936 | AC_MSG_ERROR([SELinux explicitly required, but sufficiently recent SELinux library not found]) |
2fff3d93 UD |
1937 | fi |
1938 | fi | |
1939 | fi | |
1940 | # Check if we're building with SELinux support. | |
1941 | if test "x$have_selinux" = xyes; then | |
a334319f | 1942 | AC_DEFINE(HAVE_SELINUX,1,[SELinux support]) |
2fff3d93 UD |
1943 | fi |
1944 | AC_SUBST(have_selinux) | |
1945 | ||
8ed1e7d5 GK |
1946 | dnl check for the size of 'long double'. |
1947 | AC_CHECK_SIZEOF(long double, 0) | |
1948 | sizeof_long_double=$ac_cv_sizeof_long_double | |
1949 | AC_SUBST(sizeof_long_double) | |
1950 | ||
c224a18a RM |
1951 | ### End of automated tests. |
1952 | ### Now run sysdeps configure fragments. | |
1953 | ||
cb343854 | 1954 | # They also can set these variables. |
591e1ffb | 1955 | use_ldconfig=no |
cb343854 | 1956 | ldd_rewrite_script=no |
77259608 | 1957 | libc_cv_sysconfdir=$sysconfdir |
74bd2300 | 1958 | libc_cv_gcc_unwind_find_fde=no |
e2fd3cbe | 1959 | libc_cv_idn=no |
cb343854 | 1960 | |
28f540f4 RM |
1961 | # Iterate over all the sysdep directories we will use, running their |
1962 | # configure fragments, and looking for a uname implementation. | |
1963 | uname= | |
1964 | for dir in $sysnames; do | |
57ba7bb4 UD |
1965 | case $dir in |
1966 | /*) dest=$dir ;; | |
1967 | *) dest=$srcdir/$dir ;; | |
1968 | esac | |
1969 | if test -r $dest/configure; then | |
d1149385 | 1970 | AC_MSG_RESULT(running configure fragment for $dir) |
57ba7bb4 | 1971 | . $dest/configure |
28f540f4 | 1972 | fi |
4ca84cff | 1973 | [ |
28f540f4 | 1974 | if test -z "$uname"; then |
e7f1f046 UD |
1975 | if test -r $dest/uname.c || |
1976 | test -r $dest/uname.S || | |
1977 | { test -r $dest/syscalls.list && | |
1978 | grep '^uname[ ]' $dest/syscalls.list >/dev/null; }; then | |
b86199fb | 1979 | uname=$dir |
4ca84cff | 1980 | fi |
28f540f4 | 1981 | fi |
4ca84cff | 1982 | ]dnl |
28f540f4 RM |
1983 | done |
1984 | ||
74bd2300 UD |
1985 | if test x$libc_cv_gcc_unwind_find_fde = xyes; then |
1986 | AC_DEFINE(EXPORT_UNWIND_FIND_FDE) | |
1987 | fi | |
1988 | AC_SUBST(libc_cv_gcc_unwind_find_fde) | |
1989 | ||
28f540f4 RM |
1990 | # If we will use the generic uname implementation, we must figure out what |
1991 | # it will say by examining the system, and write the results in config-name.h. | |
e7f1f046 | 1992 | if test "$uname" = "sysdeps/generic"; then |
28f540f4 RM |
1993 | |
1994 | changequote(,)dnl | |
1995 | uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'` | |
1996 | changequote([,])dnl | |
1997 | if test $uname_sysname != $config_os; then | |
1998 | config_release=`echo $config_os | sed s/$uname_sysname//` | |
1999 | fi | |
2000 | dnl | |
2001 | AC_DEFUN(LIBC_KERNEL_ID, [dnl | |
2002 | if test -r /vmunix; then | |
2003 | kernel_id=`strings /vmunix | grep UNIX` | |
2004 | elif test -r /dynix; then | |
2005 | kernel_id=`strings /dynix | grep DYNIX` | |
2006 | else | |
2007 | kernel_id= | |
2008 | fi | |
2009 | ])dnl | |
2010 | ||
b8dc6a10 | 2011 | AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl |
3a12e572 | 2012 | LIBC_KERNEL_ID |
28f540f4 RM |
2013 | changequote(,)dnl |
2014 | kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'` | |
2015 | changequote([,])dnl | |
2016 | if test x`echo "$config_release" | sed "s/^$kernel_release//"` \ | |
2017 | != x$config_release; then | |
2018 | # The configuration release is a substring of the kernel release. | |
2019 | libc_cv_uname_release=$kernel_release | |
2020 | elif test x$config_release != x; then | |
2021 | libc_cv_uname_release=$config_release | |
2022 | elif test x$kernel_release != x; then | |
2023 | libc_cv_uname_release=$kernel_release | |
2024 | else | |
2025 | libc_cv_uname_release=unknown | |
2026 | fi]) | |
28f540f4 RM |
2027 | uname_release="$libc_cv_uname_release" |
2028 | ||
b8dc6a10 | 2029 | AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl |
3a12e572 | 2030 | LIBC_KERNEL_ID |
28f540f4 RM |
2031 | changequote(,)dnl |
2032 | kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'` | |
2033 | changequote([,])dnl | |
2034 | if test -n "$kernel_version"; then | |
2035 | libc_cv_uname_version="$kernel_version" | |
2036 | else | |
2037 | libc_cv_uname_version=unknown | |
2038 | fi]) | |
28f540f4 RM |
2039 | uname_version="$libc_cv_uname_version" |
2040 | ||
2041 | AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl | |
2042 | config_uname=config-name.h:config-name.in | |
2043 | else | |
2044 | # For non-generic uname, we don't need to create config-name.h at all. | |
2045 | config_uname= | |
2046 | fi | |
2047 | ||
a8c01776 RM |
2048 | dnl This is tested by existing code and it's simpler to avoid changing it. |
2049 | AC_DEFINE(USE_IN_LIBIO) | |
96aa2d94 | 2050 | |
a53bad16 UD |
2051 | # Test for old glibc 2.0.x headers so that they can be removed properly |
2052 | # Search only in includedir. | |
2053 | AC_MSG_CHECKING(for old glibc 2.0.x headers) | |
350eb336 | 2054 | if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h" |
a53bad16 UD |
2055 | then |
2056 | old_glibc_headers=yes | |
2057 | else | |
2058 | old_glibc_headers=no | |
2059 | fi | |
2060 | AC_MSG_RESULT($old_glibc_headers) | |
2061 | if test ${old_glibc_headers} = yes; then | |
2062 | AC_MSG_WARN(*** During \"make install\" old headers from glibc 2.0.x will) | |
2063 | AC_MSG_WARN(*** be removed.) | |
2064 | fi | |
b195f6bc | 2065 | AC_SUBST(old_glibc_headers) |
26b4d766 | 2066 | |
84384f5b | 2067 | AC_SUBST(libc_cv_slibdir) |
a1d84548 | 2068 | AC_SUBST(libc_cv_localedir) |
77259608 | 2069 | AC_SUBST(libc_cv_sysconfdir) |
1ef32c3d | 2070 | AC_SUBST(libc_cv_rootsbindir) |
bcd5f356 | 2071 | AC_SUBST(libc_cv_forced_unwind) |
1ef32c3d | 2072 | |
591e1ffb | 2073 | AC_SUBST(use_ldconfig) |
cb343854 | 2074 | AC_SUBST(ldd_rewrite_script) |
84384f5b | 2075 | |
a334319f UD |
2076 | AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf) AC_SUBST(xcoff) |
2077 | if test $gnu_ld = yes; then | |
2078 | AC_DEFINE(HAVE_GNU_LD) | |
2079 | fi | |
2080 | if test $gnu_as = yes; then | |
2081 | AC_DEFINE(HAVE_GNU_AS) | |
2082 | fi | |
28f540f4 RM |
2083 | if test $elf = yes; then |
2084 | AC_DEFINE(HAVE_ELF) | |
2085 | fi | |
5af3245a UD |
2086 | if test $xcoff = yes; then |
2087 | AC_DEFINE(HAVE_XCOFF) | |
2088 | fi | |
28f540f4 | 2089 | |
650425ce | 2090 | AC_SUBST(static) |
ff3d7ed3 RM |
2091 | AC_SUBST(shared) |
2092 | if test $shared = default; then | |
a334319f UD |
2093 | if test $gnu_ld = yes; then |
2094 | shared=$elf | |
2095 | else | |
2096 | # For now we do not assume shared libs are available. In future more | |
2097 | # tests might become available. | |
2098 | shared=no | |
2099 | fi | |
2100 | fi | |
2101 | ||
2102 | if test x"$libc_cv_idn" = xyes; then | |
2103 | AC_DEFINE(HAVE_LIBIDN) | |
e2fd3cbe UD |
2104 | fi |
2105 | ||
cc3fa755 UD |
2106 | AC_CACHE_CHECK([whether -fPIC is default], pic_default, |
2107 | [pic_default=yes | |
2108 | cat > conftest.c <<EOF | |
9756dfe1 | 2109 | #if defined __PIC__ || defined __pic__ || defined PIC || defined pic |
cc3fa755 UD |
2110 | # error PIC is default. |
2111 | #endif | |
2112 | EOF | |
0b4ee387 | 2113 | if eval "${CC-cc} -S conftest.c 2>&AS_MESSAGE_LOG_FD 1>&AS_MESSAGE_LOG_FD"; then |
cc3fa755 UD |
2114 | pic_default=no |
2115 | fi | |
2116 | rm -f conftest.*]) | |
2117 | AC_SUBST(pic_default) | |
2118 | ||
ff3d7ed3 RM |
2119 | AC_SUBST(profile) |
2120 | AC_SUBST(omitfp) | |
5a97622d | 2121 | AC_SUBST(bounded) |
5107cf1d | 2122 | AC_SUBST(static_nss) |
5ae3e846 | 2123 | AC_SUBST(nopic_initfini) |
ff3d7ed3 | 2124 | |
edf5b2d7 UD |
2125 | AC_SUBST(DEFINES) |
2126 | ||
61c83c3f RM |
2127 | dnl See sysdeps/mach/configure.in for this variable. |
2128 | AC_SUBST(mach_interface_list) | |
2129 | ||
28f540f4 RM |
2130 | if test "`(cd $srcdir; pwd)`" = "`pwd`"; then |
2131 | config_makefile= | |
2132 | else | |
2133 | config_makefile=Makefile | |
2134 | fi | |
2135 | ||
ee74a442 UD |
2136 | VERSION=`sed -n -e 's/^#define VERSION "\([^"]*\)"/\1/p' < $srcdir/version.h` |
2137 | RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h` | |
df4ef2ab | 2138 | AC_SUBST(VERSION) |
ee74a442 | 2139 | AC_SUBST(RELEASE) |
df4ef2ab | 2140 | |
31075c2f | 2141 | AC_CONFIG_FILES([config.make ${config_makefile} ${config_uname}]) |
c118d634 | 2142 | AC_CONFIG_COMMANDS([default],[[ |
737547be UD |
2143 | case $CONFIG_FILES in *config.make*) |
2144 | echo "$config_vars" >> config.make;; | |
2145 | esac | |
c118d634 RM |
2146 | test -d bits || mkdir bits]],[[config_vars='$config_vars']]) |
2147 | AC_OUTPUT |