]>
Commit | Line | Data |
---|---|---|
f4017d20 | 1 | dnl Process this file with autoconf to produce a configure script. |
ff3d7ed3 | 2 | AC_REVISION([$CVSid$]) |
2f512715 | 3 | AC_PREREQ(2.13)dnl dnl Minimum Autoconf version required. |
5107cf1d | 4 | AC_INIT(include/features.h) |
28f540f4 | 5 | AC_CONFIG_HEADER(config.h) |
5bc2f642 | 6 | AC_CONFIG_AUX_DIR(scripts) |
28f540f4 RM |
7 | |
8 | # This will get text that should go into config.make. | |
9 | config_vars= | |
10 | ||
11 | # Check for a --with-gmp argument and set gmp-srcdir in config.make. | |
12 | AC_ARG_WITH(gmp, dnl | |
13 | --with-gmp=DIRECTORY find GMP source code in DIRECTORY (not needed), | |
14 | [dnl | |
15 | case "$with_gmp" in | |
16 | yes) AC_MSG_ERROR(--with-gmp requires an argument; use --with-gmp=DIRECTORY) ;; | |
17 | ''|no) ;; | |
18 | *) config_vars="$config_vars | |
19 | gmp-srcdir = $withval" ;; | |
20 | esac | |
21 | ]) | |
c8f3e6db UD |
22 | # Check for a --with-gd argument and set libgd-LDFLAGS in config.make. |
23 | AC_ARG_WITH(gd, dnl | |
24 | --with-gd=DIR find libgd include dir and library with prefix DIR, | |
25 | [dnl | |
26 | case "$with_gd" in | |
f5f7239f UD |
27 | yes|''|no) ;; |
28 | *) libgd_include="-I$withval/include" | |
c8f3e6db UD |
29 | libgd_ldflags="-L$withval/lib" ;; |
30 | esac | |
31 | ]) | |
f5f7239f UD |
32 | AC_ARG_WITH(gd-include, dnl |
33 | --with-gd-include=DIR find libgd include files in DIR, | |
34 | [dnl | |
35 | case "$with_gd_include" in | |
36 | ''|no) ;; | |
37 | *) libgd_include="-I$withval" ;; | |
38 | esac | |
39 | ]) | |
40 | AC_ARG_WITH(gd-lib, dnl | |
41 | --with-gd-lib=DIR find libgd library files in DIR, | |
42 | [dnl | |
43 | case "$with_gd_lib" in | |
44 | ''|no) ;; | |
45 | *) libgd_ldflags="-L$withval" ;; | |
46 | esac | |
47 | ]) | |
48 | ||
49 | if test -n "$libgd_include"; then | |
50 | config_vars="$config_vars | |
cf90163d | 51 | CFLAGS-memusagestat.c = $libgd_include" |
f5f7239f UD |
52 | fi |
53 | if test -n "$libgd_ldflags"; then | |
54 | config_vars="$config_vars | |
55 | libgd-LDFLAGS = $libgd_ldflags" | |
56 | fi | |
28f540f4 | 57 | |
ff3d7ed3 | 58 | dnl Arguments to specify presence of other packages/features. |
335aa320 | 59 | AC_ARG_WITH(fp, dnl |
a18f587d | 60 | [ --with-fp if using floating-point hardware [default=yes]], |
335aa320 | 61 | with_fp=$withval, with_fp=yes) |
675322a5 | 62 | AC_SUBST(with_fp) |
650425ce | 63 | AC_ARG_WITH(binutils, dnl |
a5a0310d | 64 | --with-binutils=PATH specify location of binutils (as and ld), |
650425ce | 65 | path_binutils=$withval, path_binutils='') |
28f540f4 RM |
66 | AC_ARG_WITH(elf, dnl |
67 | --with-elf if using the ELF object format, | |
335aa320 | 68 | elf=$withval, elf=no) |
5af3245a UD |
69 | AC_ARG_WITH(xcoff, dnl |
70 | --with-xcoff if using the XCOFF object format, | |
71 | xcoff=$withval, xcoff=no) | |
4d06461a | 72 | AC_ARG_WITH(cvs, dnl |
4442d7e8 | 73 | [ --without-cvs if CVS should not be used], |
4d06461a | 74 | with_cvs=$withval, with_cvs=yes) |
6b3f2b3d UD |
75 | if test "$with_cvs" = yes; then |
76 | if test -d $srcdir/CVS && grep :pserver: $srcdir/CVS/Root > /dev/null | |
77 | then | |
78 | with_cvs=no | |
79 | fi | |
4442d7e8 | 80 | fi |
4d06461a | 81 | AC_SUBST(with_cvs) |
28f540f4 | 82 | |
dbe7a0f5 UD |
83 | AC_ARG_WITH(headers, dnl |
84 | [ --with-headers=PATH location of system headers to use | |
85 | [e.g. /usr/src/linux/include] | |
86 | [default=compiler default]], | |
87 | sysheaders=$withval, sysheaders='') | |
88 | ||
deab9dea RM |
89 | AC_ARG_ENABLE(libio, dnl |
90 | [ --enable-libio build in GNU libio instead of GNU stdio], | |
f4482045 RM |
91 | [if test $enableval = yes; then |
92 | stdio=libio | |
93 | else | |
94 | stdio=stdio | |
95 | fi], | |
96 | stdio=default) | |
deab9dea | 97 | |
a18f587d UD |
98 | AC_ARG_ENABLE(sanity-checks, dnl |
99 | [ --disable-sanity-checks really do not use threads (should not be used | |
100 | except in special situations) [default=yes]], | |
101 | enable_sanity=$enableval, enable_sanity=yes) | |
102 | ||
650425ce UD |
103 | dnl Arguments to enable or disable building the static, shared, profiled, |
104 | dnl and -fomit-frame-pointer libraries. | |
b38bb8ca UD |
105 | dnl I've disabled this for now since we cannot build glibc without static |
106 | dnl libraries built in the moment. | |
107 | dnl AC_ARG_ENABLE(static, dnl | |
108 | dnl [ --enable-static build static library [default=yes]], | |
109 | dnl static=$enableval, static=yes) | |
5c2a0669 | 110 | static=yes |
ff3d7ed3 RM |
111 | AC_ARG_ENABLE(shared, dnl |
112 | [ --enable-shared build shared library [default=yes if GNU ld & ELF]], | |
6b3a2224 | 113 | shared=$enableval, shared=default) |
ff3d7ed3 RM |
114 | AC_ARG_ENABLE(profile, dnl |
115 | [ --enable-profile build profiled library [default=yes]], | |
6b3a2224 | 116 | profile=$enableval, profile=yes) |
ff3d7ed3 | 117 | AC_ARG_ENABLE(omitfp, dnl |
6b3a2224 RM |
118 | [ --enable-omitfp build undebuggable optimized library [default=no]], |
119 | omitfp=$enableval, omitfp=no) | |
5a97622d UD |
120 | AC_ARG_ENABLE(bounded, dnl |
121 | [ --enable-bounded build with runtime bounds checking [default=no]], | |
122 | bounded=$enableval, bounded=no) | |
650425ce UD |
123 | AC_ARG_ENABLE(versioning, dnl |
124 | [ --disable-versioning do not include versioning information in the | |
125 | library objects [default=yes if supported]], | |
126 | enable_versioning=$enableval, enable_versioning=yes) | |
6b3a2224 | 127 | |
62ab42d6 UD |
128 | AC_ARG_ENABLE(oldest-abi, dnl |
129 | [ --enable-oldest-abi=ABI configure the oldest ABI supported [e.g. 2.2] | |
130 | [default=glibc default]], | |
131 | oldest_abi=$enableval, oldest_abi=no) | |
132 | if test "$oldest_abi" = yes || test "$oldest_abi" = no; then | |
133 | oldest_abi=default | |
134 | else | |
135 | AC_DEFINE_UNQUOTED(GLIBC_OLDEST_ABI, "$oldest_abi") | |
136 | fi | |
137 | AC_SUBST(oldest_abi) | |
138 | ||
6b3a2224 RM |
139 | dnl Generic infrastructure for drop-in additions to libc. |
140 | AC_ARG_ENABLE(add-ons, dnl | |
73237de3 UD |
141 | [ --enable-add-ons[=DIR1,DIR2]... |
142 | configure and build add-ons in DIR1,DIR2,... | |
143 | search for add-ons if no parameter given], | |
61952351 | 144 | [case "$enableval" in |
9c4c0024 UD |
145 | yes) add_ons=`cd $srcdir && echo */configure | sed -e 's!/configure!!g'` |
146 | test "$add_ons" = "*" && add_ons= ;; | |
61952351 UD |
147 | *) add_ons=`echo "$enableval" | sed 's/,/ /g'`;; |
148 | esac], | |
149 | [add_ons=]) | |
150 | ||
8d4b5a8a UD |
151 | dnl Let the user avoid using TLS. Don't know why but... |
152 | AC_ARG_WITH(tls, dnl | |
153 | [ --without-tls prevent support for TLS], | |
154 | usetls=$withval, usetls=yes) | |
155 | ||
6b3a2224 | 156 | AC_CONFIG_SUBDIRS($add_ons) |
57ba7bb4 | 157 | add_ons_pfx= |
da74e902 | 158 | if test x"$add_ons" != x; then |
57ba7bb4 | 159 | for f in $add_ons; do |
aa44a9de AJ |
160 | # Some sanity checks |
161 | if test "$f" = "crypt"; then | |
162 | AC_MSG_ERROR([ | |
163 | *** It seems that you're using an old \`crypt' add-on. crypt is now | |
164 | *** part of glibc and using the old add-on will not work with this | |
165 | *** release. Start again with fresh sources and without the old | |
166 | *** \`crypt' add-on.]) | |
167 | fi | |
168 | if test "$f" = "localedata"; then | |
169 | AC_MSG_ERROR([ | |
170 | *** It seems that you're using an old \`localedata' add-on. localedata | |
171 | *** is now part of glibc and using the old add-on will not work with | |
172 | *** this release. Start again with fresh sources and without the old | |
173 | *** \`localedata' add-on.]) | |
174 | fi | |
af6f3906 UD |
175 | # Test whether such a subdir really exists. |
176 | if test -d $srcdir/$f; then | |
177 | add_ons_pfx="$add_ons_pfx $f/" | |
178 | else | |
179 | AC_MSG_ERROR(add-on directory \"$f\" does not exist) | |
180 | fi | |
57ba7bb4 UD |
181 | done |
182 | fi | |
ff3d7ed3 | 183 | |
5107cf1d UD |
184 | dnl On some platforms we cannot use dynamic loading. We must provide |
185 | dnl static NSS modules. | |
186 | AC_ARG_ENABLE(static-nss, dnl | |
187 | [ --enable-static-nss build static NSS modules [default=no]], | |
188 | static_nss=$enableval, static_nss=no) | |
189 | if test x"$static_nss" = xyes; then | |
190 | AC_DEFINE(DO_STATIC_NSS) | |
191 | fi | |
192 | ||
73237de3 | 193 | AC_ARG_ENABLE(force-install, |
310b3460 | 194 | [ --disable-force-install don't force installation of files from this package, |
73237de3 UD |
195 | even if they are older than the installed files], |
196 | force_install=$enableval, force_install=yes) | |
197 | AC_SUBST(force_install) | |
198 | ||
958f238f UD |
199 | dnl On some platforms we allow dropping compatibility with all kernel |
200 | dnl versions. | |
201 | AC_ARG_ENABLE(kernel, | |
b5b53bdb | 202 | [ --enable-kernel=VERSION compile for compatibility with kernel not older |
958f238f UD |
203 | than VERSION], |
204 | minimum_kernel=$enableval) | |
86cfe82d UD |
205 | dnl Prevent unreasonable values. |
206 | if test "$minimum_kernel" = yes || test "$minimum_kernel" = no; then | |
207 | # Better nothing than this. | |
208 | minimum_kernel="" | |
269e369f UD |
209 | else |
210 | if test "$minimum_kernel" = current; then | |
211 | minimum_kernel=`uname -r 2>/dev/null` || minimum_kernel= | |
212 | fi | |
86cfe82d | 213 | fi |
958f238f | 214 | |
6cc7d725 UD |
215 | dnl For the development we sometimes want gcc to issue even more warnings. |
216 | dnl This is not the default since many of the extra warnings are not | |
217 | dnl appropriate. | |
218 | AC_ARG_ENABLE(all-warnings, | |
219 | [ --enable-all-warnings enable all useful warnings gcc can issue], | |
220 | all_warnings=$enableval) | |
221 | AC_SUBST(all_warnings) | |
222 | ||
28f540f4 | 223 | AC_CANONICAL_HOST |
8a523922 UD |
224 | |
225 | # The way shlib-versions is used to generate soversions.mk uses a | |
226 | # fairly simplistic model for name recognition that can't distinguish | |
227 | # i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os | |
228 | # of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can | |
229 | # tell. This doesn't get used much beyond that, so it's fairly safe. | |
230 | case "$host_os" in | |
231 | linux*) | |
232 | ;; | |
233 | gnu*) | |
234 | host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'` | |
235 | ;; | |
236 | esac | |
237 | ||
28f540f4 RM |
238 | # We keep the original values in `$config_*' and never modify them, so we |
239 | # can write them unchanged into config.make. Everything else uses | |
240 | # $machine, $vendor, and $os, and changes them whenever convenient. | |
241 | config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os | |
242 | ||
2f64b655 UD |
243 | # Don't allow vendor == "unknown" |
244 | test "$config_vendor" = unknown && config_vendor= | |
245 | config_os="`echo $config_os | sed 's/^unknown-//'`" | |
246 | ||
a2fe9c76 RM |
247 | # Some configurations imply other options. |
248 | case "$host_os" in | |
249 | gnu* | linux* | bsd4.4* | netbsd* | freebsd*) | |
250 | # These systems always use GNU tools. | |
c8cf0b14 | 251 | gnu_ld=yes gnu_as=yes ;; |
a2fe9c76 RM |
252 | esac |
253 | case "$host_os" in | |
7799b7b3 UD |
254 | # i586-linuxaout is mangled into i586-pc-linux-gnuaout |
255 | linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*) | |
3776d592 | 256 | ;; |
ba909880 | 257 | gnu* | linux* | sysv4* | solaris2* | irix6*) |
3776d592 RM |
258 | # These systems (almost) always use the ELF format. |
259 | elf=yes | |
84724245 | 260 | ;; |
5af3245a UD |
261 | aix*) |
262 | # These systems are always xcoff | |
263 | xcoff=yes | |
a711b01d | 264 | elf=no |
5af3245a | 265 | ;; |
a2fe9c76 RM |
266 | esac |
267 | ||
28f540f4 RM |
268 | machine=$config_machine |
269 | vendor=$config_vendor | |
270 | os=$config_os | |
271 | ||
a808d541 UD |
272 | # config.guess on some IBM machines says `rs6000' instead of `powerpc'. |
273 | # Unify this here. | |
274 | if test "$machine" = rs6000; then | |
275 | machine="powerpc" | |
276 | fi | |
277 | ||
bdc8eb03 UD |
278 | ### |
279 | ### I put this here to prevent those annoying emails from people who cannot | |
280 | ### read and try to compile glibc on unsupported platforms. --drepper | |
281 | ### | |
282 | ### By using the undocumented --enable-hacker-mode option for configure | |
283 | ### one can skip this test to make the configuration not fail for unsupported | |
284 | ### platforms. | |
285 | ### | |
286 | if test -z "$enable_hacker_mode"; then | |
287 | case "$machine-$host_os" in | |
75d86c1f | 288 | *-linux* | *-gnu* | arm*-none* | powerpc-aix4.3.*) |
bdc8eb03 UD |
289 | ;; |
290 | *) | |
291 | echo "*** The GNU C library is currently not available for this platform." | |
292 | echo "*** So far nobody cared to port it and if there is no volunteer it" | |
293 | echo "*** might never happen. So, if you have interest to see glibc on" | |
294 | echo "*** this platform visit" | |
295 | echo "*** http://www.gnu.org/software/libc/porting.html" | |
296 | echo "*** and join the group of porters" | |
297 | exit 1 | |
298 | ;; | |
299 | esac | |
300 | fi | |
301 | ||
28f540f4 RM |
302 | dnl We need to use [ and ] for other purposes for a while now. |
303 | changequote(,)dnl | |
304 | # Expand the configuration machine name into a subdirectory by architecture | |
305 | # type and particular chip. | |
306 | case "$machine" in | |
f0523145 RM |
307 | a29k | am29000) base_machine=a29k machine=a29k ;; |
308 | alpha*) base_machine=alpha machine=alpha/$machine ;; | |
0c8b61e6 | 309 | arm*) base_machine=arm machine=arm/arm32/$machine ;; |
60c96635 UD |
310 | c3[012]) base_machine=cx0 machine=cx0/c30 ;; |
311 | c4[04]) base_machine=cx0 machine=cx0/c40 ;; | |
b15cb495 UD |
312 | hppa*64*) base_machine=hppa machine=hppa/hppa64 ;; |
313 | hppa*) base_machine=hppa machine=hppa/hppa1.1 ;; | |
a8922de8 | 314 | i[3456]86) base_machine=i386 machine=i386/$machine ;; |
d64e704c | 315 | ia64) base_machine=ia64 machine=ia64 ;; |
f0523145 RM |
316 | m680?0) base_machine=m68k machine=m68k/$machine ;; |
317 | m68k) base_machine=m68k machine=m68k/m68020 ;; | |
318 | m88???) base_machine=m88k machine=m88k/$machine ;; | |
319 | m88k) base_machine=m88k machine=m88k/m88100 ;; | |
f0523145 | 320 | mips64*) base_machine=mips64 machine=mips/mips64/$machine ;; |
9a97d1f7 UD |
321 | mips*) base_machine=mips |
322 | case "`uname -m`" in | |
323 | IP22) machine=mips/mips3 ;; | |
45b3d8ad | 324 | *) machine=mips/$machine ;; |
9a97d1f7 | 325 | esac ;; |
136d4332 UD |
326 | s390) base_machine=s390 machine=s390/s390-32 ;; |
327 | s390x) base_machine=s390 machine=s390/s390-64 ;; | |
88615235 UD |
328 | sh3*) base_machine=sh machine=sh/sh3 ;; |
329 | sh4*) base_machine=sh machine=sh/sh4 ;; | |
ca34d7a7 UD |
330 | sparc | sparcv[67]) |
331 | base_machine=sparc machine=sparc/sparc32 ;; | |
332 | sparcv8 | supersparc | hypersparc) | |
333 | base_machine=sparc machine=sparc/sparc32/sparcv8 ;; | |
ae6b8730 RH |
334 | sparcv8plus | sparcv8plusa | sparcv9) |
335 | base_machine=sparc machine=sparc/sparc32/sparcv9 ;; | |
bb769ab6 UD |
336 | sparcv8plusb | sparcv9b) |
337 | base_machine=sparc machine=sparc/sparc32/sparcv9b ;; | |
ca34d7a7 UD |
338 | sparc64 | ultrasparc) |
339 | base_machine=sparc machine=sparc/sparc64 ;; | |
bb769ab6 UD |
340 | sparc64b | ultrasparc3) |
341 | base_machine=sparc machine=sparc/sparc64/sparcv9b ;; | |
0c8b61e6 | 342 | thumb*) base_machine=thumb machine=arm/thumb/$machine ;; |
3a2832a0 | 343 | *) base_machine=$machine ;; |
28f540f4 | 344 | esac |
f0523145 RM |
345 | changequote([,])dnl |
346 | AC_SUBST(base_machine) | |
28f540f4 | 347 | |
dfd2257a UD |
348 | if test "$base_machine" = "i386"; then |
349 | AC_DEFINE(USE_REGPARMS) | |
350 | fi | |
351 | ||
f0523145 | 352 | # Compute the list of sysdep directories for this configuration. |
f332db02 | 353 | # This can take a while to compute. |
f0523145 | 354 | sysdep_dir=$srcdir/sysdeps |
f332db02 | 355 | AC_MSG_CHECKING(sysdep dirs) |
f0523145 RM |
356 | dnl We need to use [ and ] for other purposes for a while now. |
357 | changequote(,)dnl | |
28f540f4 RM |
358 | # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1. |
359 | os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`" | |
360 | ||
361 | case "$os" in | |
362 | gnu*) | |
363 | base_os=mach/hurd ;; | |
883bc19b | 364 | netbsd* | 386bsd* | freebsd* | bsdi*) |
28f540f4 | 365 | base_os=unix/bsd/bsd4.4 ;; |
222c4e71 | 366 | osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*) |
28f540f4 | 367 | base_os=unix/bsd ;; |
d586354e | 368 | sysv* | isc* | esix* | sco* | minix* | irix4* | linux*) |
28f540f4 | 369 | base_os=unix/sysv ;; |
f802accb UD |
370 | irix6*) |
371 | base_os=unix/sysv/irix6/$os ;; | |
d586354e | 372 | solaris[2-9]*) |
28f540f4 | 373 | base_os=unix/sysv/sysv4 ;; |
908c3d5b UD |
374 | hpux*) |
375 | base_os=unix/sysv/hpux/$os ;; | |
75d86c1f UD |
376 | aix4.3*) |
377 | base_os=unix/sysv/aix/aix4.3 ;; | |
28f540f4 RM |
378 | none) |
379 | base_os=standalone ;; | |
380 | *) | |
381 | base_os='' ;; | |
382 | esac | |
383 | ||
384 | # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos. | |
385 | tail=$os | |
386 | ostry=$os | |
387 | while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do | |
388 | ostry="$ostry /$o" | |
389 | tail=$o | |
75914335 | 390 | done |
28f540f4 RM |
391 | o=`echo $tail | sed 's/[0-9]*$//'` |
392 | if test $o != $tail; then | |
393 | ostry="$ostry /$o" | |
394 | fi | |
ec4b0518 UD |
395 | # For linux-gnu, try linux-gnu, then linux. |
396 | o=`echo $tail | sed 's/-.*$//'` | |
397 | if test $o != $tail; then | |
398 | ostry="$ostry /$o" | |
399 | fi | |
28f540f4 RM |
400 | |
401 | # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix. | |
402 | base= | |
403 | tail=$base_os | |
404 | while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do | |
405 | set $b | |
406 | base="$base /$1" | |
407 | tail="$2" | |
408 | done | |
409 | ||
ae6b8730 | 410 | # For sparc/sparc32, try sparc/sparc32 and then sparc. |
28f540f4 RM |
411 | mach= |
412 | tail=$machine | |
413 | while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do | |
414 | set $m | |
10ceac89 RM |
415 | # Prepend the machine's FPU directory unless --without-fp. |
416 | if test "$with_fp" = yes; then | |
417 | mach="$mach /$1/fpu" | |
82d00cab | 418 | fi |
28f540f4 RM |
419 | mach="$mach /$1" |
420 | tail="$2" | |
421 | done | |
422 | ||
423 | dnl We are done with glob and regexp uses of [ and ]; return to autoconf. | |
424 | changequote([,])dnl | |
425 | ||
426 | # Find what sysdep directories exist. | |
427 | sysnames= | |
57ba7bb4 UD |
428 | IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:" |
429 | for d in $add_ons_pfx ''; do | |
430 | for b in $base ''; do | |
431 | for m0 in $mach ''; do | |
432 | for v in /$vendor ''; do | |
ae828bc6 | 433 | test "$v" = / && continue |
57ba7bb4 | 434 | for o in /$ostry ''; do |
ae828bc6 | 435 | test "$o" = / && continue |
57ba7bb4 UD |
436 | for m in $mach ''; do |
437 | if test "$m0$b$v$o$m"; then | |
438 | try="${d}sysdeps$m0$b$v$o$m" | |
439 | test -n "$enable_debug_configure" && | |
440 | echo "$0 [DEBUG]: try $try" >&2 | |
9c4c0024 | 441 | if test -d $srcdir/$try; then |
57ba7bb4 UD |
442 | sysnames="$sysnames $try" |
443 | { test -n "$o" || test -n "$b"; } && os_used=t | |
444 | { test -n "$m" || test -n "$m0"; } && machine_used=t | |
445 | fi | |
446 | fi | |
447 | done | |
28f540f4 RM |
448 | done |
449 | done | |
450 | done | |
451 | done | |
452 | done | |
57ba7bb4 | 453 | IFS="$ac_save_ifs" |
28f540f4 RM |
454 | |
455 | if test -z "$os_used" && test "$os" != none; then | |
456 | AC_MSG_ERROR(Operating system $os is not supported.) | |
457 | fi | |
458 | if test -z "$machine_used" && test "$machine" != none; then | |
459 | AC_MSG_ERROR(The $machine is not supported.) | |
460 | fi | |
461 | ||
462 | # We have now validated the configuration. | |
463 | ||
335aa320 | 464 | |
10ceac89 RM |
465 | # If using ELF, look for an `elf' subdirectory of each machine directory. |
466 | # We prepend these rather than inserting them whereever the machine appears | |
467 | # because things specified by the machine's ELF ABI should override | |
468 | # OS-specific things, and should always be the same for any OS on the | |
469 | # machine (otherwise what's the point of an ABI?). | |
470 | if test "$elf" = yes; then | |
471 | elf_dirs= | |
57ba7bb4 | 472 | for d in $add_ons_pfx ''; do |
57ba7bb4 | 473 | for m in $mach; do |
9c4c0024 | 474 | if test -d $srcdir/${d}sysdeps$m/elf; then |
c2bb8cab | 475 | elf_dirs="$elf_dirs ${d}sysdeps$m/elf" |
57ba7bb4 UD |
476 | fi |
477 | done | |
28f540f4 | 478 | done |
57ba7bb4 | 479 | sysnames="`echo $elf_dirs | sed -e 's,//,/,g'` $sysnames" |
28f540f4 RM |
480 | fi |
481 | ||
335aa320 | 482 | |
28f540f4 RM |
483 | # Expand the list of system names into a full list of directories |
484 | # from each element's parent name and Implies file (if present). | |
485 | set $sysnames | |
e50ec9f9 | 486 | names= |
28f540f4 RM |
487 | while test $# -gt 0; do |
488 | name=$1 | |
489 | shift | |
490 | ||
e50ec9f9 | 491 | case " $names " in *" $name "*) |
f332db02 RM |
492 | # Already in the list. |
493 | continue | |
e50ec9f9 | 494 | esac |
f332db02 RM |
495 | |
496 | # Report each name as we discover it, so there is no long pause in output. | |
497 | echo $ac_n "$name $ac_c" >&AC_FD_MSG | |
498 | ||
57ba7bb4 UD |
499 | name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'` |
500 | ||
501 | case $name in | |
502 | /*) xsrcdir= ;; | |
503 | *) xsrcdir=$srcdir/ ;; | |
504 | esac | |
505 | test -n "$enable_debug_configure" && | |
506 | echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2 | |
507 | ||
508 | if test -f $xsrcdir$name/Implies; then | |
28f540f4 | 509 | # Collect more names from the `Implies' file (removing comments). |
57ba7bb4 UD |
510 | implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/Implies`" |
511 | implied= | |
512 | for x in $implied_candidate; do | |
636ccfc8 | 513 | found=no |
57ba7bb4 UD |
514 | if test -d $xsrcdir$name_base/$x; then |
515 | implied="$implied $name_base/$x"; | |
636ccfc8 UD |
516 | found=yes |
517 | fi | |
518 | for d in $add_ons_pfx ''; do | |
519 | try="${d}sysdeps/$x" | |
520 | case $d in | |
521 | /*) try_srcdir= ;; | |
522 | *) try_srcdir=$srcdir/ ;; | |
523 | esac | |
524 | test -n "$enable_debug_configure" && | |
525 | echo "[DEBUG]: $name implied $x try($d) {$try_srcdir}$try" >&2 | |
526 | if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try; | |
527 | then | |
528 | implied="$implied $try" | |
529 | found=yes | |
530 | fi | |
531 | done | |
532 | if test $found = no; then | |
57ba7bb4 UD |
533 | AC_MSG_WARN($name/Implies specifies nonexistent $x) |
534 | fi | |
28f540f4 RM |
535 | done |
536 | else | |
537 | implied= | |
538 | fi | |
539 | ||
540 | # Add NAME to the list of names. | |
541 | names="$names $name" | |
542 | ||
543 | # Find the parent of NAME, using the empty string if it has none. | |
544 | changequote(,)dnl | |
57ba7bb4 | 545 | parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`" |
28f540f4 RM |
546 | changequote([,])dnl |
547 | ||
548 | # Add the names implied by NAME, and NAME's parent (if it has one), to | |
549 | # the list of names to be processed (the argument list). We prepend the | |
550 | # implied names to the list and append the parent. We want implied | |
551 | # directories to come before further directories inferred from the | |
552 | # configuration components; this ensures that for sysv4, unix/common | |
553 | # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*) | |
554 | # after sysv4). | |
555 | sysnames="`echo $implied $* $parent`" | |
556 | test -n "$sysnames" && set $sysnames | |
557 | done | |
558 | ||
559 | # Add the default directories. | |
ecdc196c | 560 | default_sysnames=sysdeps/generic |
2de7874e | 561 | if test "$elf" = yes; then |
ecdc196c | 562 | default_sysnames="sysdeps/generic/elf $default_sysnames" |
2de7874e | 563 | fi |
ecdc196c | 564 | sysnames="$names $default_sysnames" |
f332db02 RM |
565 | AC_SUBST(sysnames) |
566 | # The other names were emitted during the scan. | |
ecdc196c | 567 | AC_MSG_RESULT($default_sysnames) |
28f540f4 | 568 | |
f332db02 RM |
569 | |
570 | ### Locate tools. | |
28f540f4 | 571 | |
28f540f4 | 572 | AC_PROG_INSTALL |
2b80a372 | 573 | if test "$INSTALL" = "${srcdir}/scripts/install-sh -c"; then |
28f540f4 | 574 | # The makefiles need to use a different form to find it in $srcdir. |
2b80a372 | 575 | INSTALL='\$(..)./scripts/install-sh -c' |
28f540f4 | 576 | fi |
0e3426bb | 577 | AC_PROG_LN_S |
ae828bc6 | 578 | |
a4301d41 UD |
579 | # We need the physical current working directory. We cannot use the |
580 | # "pwd -P" shell builtin since that's not portable. Instead we try to | |
581 | # find a pwd binary. Note that assigning to the PWD environment | |
582 | # variable might have some interesting side effects, so we don't do | |
583 | # that. | |
584 | AC_PATH_PROG(PWD_P, pwd, no) | |
585 | if test "$PWD_P" = no; then | |
586 | AC_MSG_ERROR(*** A pwd binary could not be found.) | |
587 | fi | |
588 | ||
63bda0c1 | 589 | # These programs are version sensitive. |
4bca4c17 UD |
590 | AC_REQUIRE([AC_CHECK_TOOL_PREFIX])dnl |
591 | AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v, | |
d64e704c | 592 | [version \([egcygnustpi-]*[0-9.]*\)], |
aab51d22 | 593 | [*gcc-2.9[5-9].*|*2.8.[1-9]*|*2.9|*2.9.[0-9]*|2.9[5-9]*|3.[0-9]*|cygnus-2.9[1-9]*|gcc-2.9[5-9]|gcc-2.1[0-9][0-9]|sgicc-*], |
6b4e880f | 594 | critic_missing=gcc) |
22e65f8f | 595 | AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version, |
8fc1e2ca | 596 | [GNU Make[^0-9]*\([0-9][0-9.]*\)], |
6b4e880f | 597 | [3.79* | 3.[89]*], critic_missing="$critic_missing make") |
63bda0c1 | 598 | |
03616749 AJ |
599 | |
600 | if test -n "$critic_missing"; then | |
601 | AC_MSG_ERROR([ | |
aefdff34 | 602 | *** These critical programs are missing or too old:$critic_missing |
03616749 AJ |
603 | *** Check the INSTALL file for required versions.]) |
604 | fi | |
605 | ||
606 | ||
22e65f8f | 607 | AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version, |
bdd421cc | 608 | [GNU gettext.* \([0-9]*\.[0-9.]*\)], |
aefdff34 RM |
609 | [0.10.3[6-9]* | 0.10.[4-9][0-9]* | 0.1[1-9]* | 0.[2-9][0-9]* | [1-9].*], |
610 | MSGFMT=: aux_missing="$aux_missing msgfmt") | |
63bda0c1 | 611 | AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, |
8b7fb588 | 612 | [GNU texinfo.* \([0-9][0-9.]*\)], |
aefdff34 RM |
613 | [4.*], |
614 | MAKEINFO=: aux_missing="$aux_missing makeinfo") | |
d6a97a28 | 615 | AC_CHECK_PROG_VER(SED, sed, --version, |
aec103d3 | 616 | [GNU sed version \([0-9]*\.[0-9.]*\)], |
aefdff34 RM |
617 | [3.0[2-9]*|3.[1-9]*|[4-9]*], |
618 | SED=: aux_missing="$aux_missing sed") | |
63bda0c1 | 619 | |
ea9f119b AJ |
620 | AC_PROG_CC_LOCAL |
621 | AC_CANONICAL_BUILD | |
622 | if test $host != $build; then | |
623 | AC_CHECK_PROGS(BUILD_CC, gcc cc) | |
624 | fi | |
625 | AC_SUBST(cross_compiling) | |
626 | AC_PROG_CPP | |
627 | LIBC_PROG_BINUTILS | |
628 | AC_CHECK_TOOL(MIG, mig) | |
629 | ||
630 | # Accept binutils 2.10.1 or newer (and also any ia64 2.9 version) | |
45ef592d UD |
631 | # XXX Commented out because it filters out too many good versions. |
632 | # XXX --drepper | |
633 | # AC_CHECK_PROG_VER(AS, $AS, --version, | |
634 | # [GNU assembler.* \([0-9]*\.[0-9.]*\(-ia64-[0-9]*\)*\)], | |
635 | # [2.10.[1-9]* | 2.1[1-9]* | 2.9-ia64-*], AS=: critic_missing=t) | |
ea9f119b | 636 | |
4bca4c17 | 637 | test -n "$aux_missing" && AC_MSG_WARN([ |
aefdff34 | 638 | *** These auxiliary programs are missing or too old:$aux_missing |
63bda0c1 UD |
639 | *** some features will be disabled. |
640 | *** Check the INSTALL file for required versions.]) | |
28f540f4 | 641 | |
d01d6319 UD |
642 | # glibcbug.in wants to know the compiler version. |
643 | CCVERSION=`$CC -v 2>&1 | sed -n 's/gcc version //p'` | |
644 | AC_SUBST(CCVERSION) | |
645 | ||
dbe7a0f5 UD |
646 | # if using special system headers, find out the compiler's sekrit |
647 | # header directory and add that to the list. NOTE: Only does the right | |
648 | # thing on a system that doesn't need fixincludes. (Not presently a problem.) | |
649 | if test -n "$sysheaders"; then | |
650 | ccheaders=`$CC -print-file-name=include` | |
651 | SYSINCLUDES="-nostdinc -isystem $ccheaders -isystem $sysheaders" | |
652 | fi | |
653 | AC_SUBST(SYSINCLUDES) | |
654 | ||
97a47867 UD |
655 | # check if ranlib is necessary |
656 | AC_CACHE_CHECK(whether ranlib is necessary, libc_cv_ranlib_necessary, [dnl | |
657 | cat > conftest.c <<EOF | |
658 | int a; | |
659 | char b; | |
660 | void c(void) {} | |
661 | EOF | |
662 | $CC $CFLAGS -c conftest.c | |
663 | $AR cr conftest.a conftest.c | |
664 | cp conftest.a conftest2.a | |
665 | $RANLIB conftest.a | |
666 | if cmp -s conftest.a conftest2.a; then | |
667 | libc_cv_ranlib_necessary=no | |
f38931a9 | 668 | else |
97a47867 UD |
669 | libc_cv_ranlib_necessary=yes |
670 | fi | |
671 | rm -rf conftest*]) | |
672 | if test "$libc_cv_ranlib_necessary" = no; then | |
673 | RANLIB=: | |
f38931a9 | 674 | fi |
f38931a9 | 675 | |
3911660e UD |
676 | # Test if LD_LIBRARY_PATH contains the notation for the current directory |
677 | # since this would lead to problems installing/building glibc. | |
678 | # LD_LIBRARY_PATH contains the current directory if one of the following | |
679 | # is true: | |
680 | # - one of the terminals (":" and ";") is the first or last sign | |
681 | # - two terminals occur directly after each other | |
682 | # - the path contains an element with a dot in it | |
683 | AC_MSG_CHECKING(LD_LIBRARY_PATH variable) | |
684 | changequote(,)dnl | |
685 | case ${LD_LIBRARY_PATH} in | |
686 | [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) | |
b3a86ae1 | 687 | ld_library_path_setting="contains current directory" |
3911660e UD |
688 | ;; |
689 | *) | |
690 | ld_library_path_setting="ok" | |
691 | ;; | |
692 | esac | |
693 | changequote([,])dnl | |
694 | AC_MSG_RESULT($ld_library_path_setting) | |
695 | if test "$ld_library_path_setting" != "ok"; then | |
63bda0c1 UD |
696 | AC_MSG_ERROR([ |
697 | *** LD_LIBRARY_PATH shouldn't contain the current directory when | |
698 | *** building glibc. Please change the environment variable | |
699 | *** and run configure again.]) | |
3911660e | 700 | fi |
8e31cf7e | 701 | |
74bd2300 UD |
702 | AC_CACHE_CHECK(whether GCC supports -static-libgcc, libc_cv_gcc_static_libgcc, [dnl |
703 | if $CC -v -static-libgcc 2>&1 | grep -q 'unrecognized option.*static-libgcc'; then | |
704 | libc_cv_gcc_static_libgcc= | |
705 | else | |
706 | libc_cv_gcc_static_libgcc=-static-libgcc | |
707 | fi]) | |
708 | AC_SUBST(libc_cv_gcc_static_libgcc) | |
709 | ||
84384f5b | 710 | AC_PATH_PROG(BASH, bash, no) |
a18f587d | 711 | if test "$BASH" != no && |
f43ce637 | 712 | $BASH -c 'test "$BASH_VERSINFO" \ |
6973fc01 | 713 | && test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then |
84384f5b UD |
714 | libc_cv_have_bash2=yes |
715 | else | |
716 | libc_cv_have_bash2=no | |
717 | fi | |
718 | AC_SUBST(libc_cv_have_bash2) | |
719 | ||
5290baf0 UD |
720 | dnl We need a ksh compatible shell for tzselect. |
721 | if test "$BASH" = no; then | |
722 | AC_PATH_PROG(KSH, ksh, no) | |
723 | if test "$KSH" = no; then | |
724 | libc_cv_have_ksh=no | |
725 | else | |
726 | libc_cv_have_ksh=yes | |
727 | fi | |
728 | else | |
729 | KSH="$BASH" | |
730 | AC_SUBST(KSH) | |
731 | libc_cv_have_ksh=yes | |
732 | fi | |
733 | AC_SUBST(libc_cv_have_ksh) | |
734 | ||
5aa8ff62 | 735 | AC_PROG_AWK |
c0016081 | 736 | AC_PATH_PROG(PERL, perl, no) |
2fd5d029 RM |
737 | if test "$PERL" != no && |
738 | (eval `$PERL -V:apiversion`; test `expr "$apiversion" \< 5` -ne 0); then | |
739 | PERL=no | |
ecb06196 | 740 | fi |
2f512715 AS |
741 | AC_PATH_PROG(INSTALL_INFO, install-info, no, |
742 | $PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin) | |
c0016081 UD |
743 | if test "$INSTALL_INFO" != "no"; then |
744 | AC_CACHE_CHECK(for old Debian install-info, libc_cv_old_debian_install_info, | |
745 | [mkdir conftest.d | |
746 | # There is a hard ^_ on the next line. I am open to better ideas. | |
747 | (echo '\1f' | |
748 | echo 'File: dir Node: Top This is the top of the INFO tree' | |
749 | echo '* Menu:') >conftest.d/dir | |
750 | (echo 'INFO-DIR-SECTION i-d-s works' | |
751 | echo 'START-INFO-DIR-ENTRY' | |
752 | echo '* Prog: (prog). Program.' | |
753 | echo 'END-INFO-DIR-ENTRY') >conftest.d/prog.info | |
754 | if $INSTALL_INFO --info-dir=conftest.d conftest.d/prog.info >&AC_FD_CC 2>&1 | |
d8cceb4f | 755 | then |
c0016081 UD |
756 | if grep -s 'i-d-s works' conftest.d/dir >/dev/null |
757 | then libc_cv_old_debian_install_info=no | |
758 | else libc_cv_old_debian_install_info=yes | |
759 | fi | |
760 | else libc_cv_old_debian_install_info=no testfailed=t | |
761 | fi | |
762 | rm -fr conftest.d]) | |
763 | if test -n "$testfailed" | |
764 | then AC_MSG_WARN([install-info errored out, check config.log]) | |
765 | fi | |
766 | OLD_DEBIAN_INSTALL_INFO=$libc_cv_old_debian_install_info | |
767 | fi | |
768 | AC_SUBST(OLD_DEBIAN_INSTALL_INFO) | |
a2b08ee5 | 769 | |
2de00372 UD |
770 | AC_PATH_PROG(BISON, bison, no, $PATH:/usr/local/bin:/usr/bin:/bin) |
771 | ||
b8dc6a10 | 772 | AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl |
28f540f4 RM |
773 | echo '#include <stddef.h> |
774 | FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c | |
775 | if eval "$ac_cpp conftest.c 2>/dev/null" \ | |
776 | | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then | |
777 | libc_cv_signed_size_t=no | |
778 | else | |
779 | libc_cv_signed_size_t=yes | |
780 | fi | |
781 | rm -f conftest*]) | |
28f540f4 RM |
782 | if test $libc_cv_signed_size_t = yes; then |
783 | dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings. | |
784 | cat >> confdefs.h <<\EOF | |
785 | #undef __SIZE_TYPE__ | |
786 | #define __SIZE_TYPE__ unsigned | |
787 | EOF | |
788 | fi | |
789 | ||
b8dc6a10 | 790 | AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl |
28f540f4 RM |
791 | AC_TRY_COMPILE(dnl |
792 | [#define __need_size_t | |
793 | #define __need_wchar_t | |
794 | #include <stddef.h> | |
795 | #define __need_NULL | |
796 | #include <stddef.h>], [size_t size; wchar_t wchar; | |
797 | #ifdef offsetof | |
798 | #error stddef.h ignored __need_* | |
799 | #endif | |
800 | if (&size == NULL || &wchar == NULL) abort ();], | |
801 | libc_cv_friendly_stddef=yes, | |
802 | libc_cv_friendly_stddef=no)]) | |
28f540f4 RM |
803 | if test $libc_cv_friendly_stddef = yes; then |
804 | config_vars="$config_vars | |
805 | override stddef.h = # The installed <stddef.h> seems to be libc-friendly." | |
806 | fi | |
807 | ||
b8dc6a10 RM |
808 | AC_CACHE_CHECK(whether we need to use -P to assemble .S files, |
809 | libc_cv_need_minus_P, [dnl | |
28f540f4 RM |
810 | cat > conftest.S <<EOF |
811 | #include "confdefs.h" | |
812 | /* Nothing whatsoever. */ | |
813 | EOF | |
814 | if ${CC-cc} $CFLAGS -c conftest.S 2>/dev/null; then | |
815 | libc_cv_need_minus_P=no | |
816 | else | |
817 | libc_cv_need_minus_P=yes | |
818 | fi | |
819 | rm -f conftest*]) | |
28f540f4 RM |
820 | if test $libc_cv_need_minus_P = yes; then |
821 | config_vars="$config_vars | |
822 | asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives." | |
823 | fi | |
824 | ||
2293395f UD |
825 | AC_MSG_CHECKING(whether .text pseudo-op must be used) |
826 | AC_CACHE_VAL(libc_cv_dot_text, [dnl | |
827 | cat > conftest.s <<EOF | |
828 | .text | |
829 | EOF | |
830 | libc_cv_dot_text= | |
831 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then | |
832 | libc_cv_dot_text=.text | |
833 | fi | |
834 | rm -f conftest*]) | |
835 | if test -z "$libc_cv_dot_text"; then | |
836 | AC_MSG_RESULT(no) | |
837 | else | |
838 | AC_MSG_RESULT(yes) | |
839 | fi | |
840 | ||
b8dc6a10 RM |
841 | AC_CACHE_CHECK(for assembler global-symbol directive, |
842 | libc_cv_asm_global_directive, [dnl | |
9a70fcab | 843 | libc_cv_asm_global_directive=UNKNOWN |
908c3d5b | 844 | for ac_globl in .globl .global .EXPORT; do |
9a70fcab | 845 | cat > conftest.s <<EOF |
2293395f | 846 | ${libc_cv_dot_text} |
908c3d5b | 847 | ${ac_globl} foo |
ae1025be | 848 | foo: |
9a70fcab UD |
849 | EOF |
850 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then | |
851 | libc_cv_asm_global_directive=${ac_globl} | |
852 | fi | |
853 | rm -f conftest* | |
854 | test $libc_cv_asm_global_directive != UNKNOWN && break | |
855 | done]) | |
9a70fcab UD |
856 | if test $libc_cv_asm_global_directive = UNKNOWN; then |
857 | AC_MSG_ERROR(cannot determine asm global directive) | |
858 | else | |
859 | AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive}) | |
860 | fi | |
861 | ||
b8dc6a10 | 862 | AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl |
9a70fcab | 863 | cat > conftest.s <<EOF |
2293395f | 864 | ${libc_cv_dot_text} |
ae1025be | 865 | foo: |
df2a0c93 | 866 | .set glibc_conftest_frobozz,foo |
9a70fcab | 867 | $libc_cv_asm_global_directive glibc_conftest_frobozz |
e215c478 | 868 | EOF |
df2a0c93 RM |
869 | # The alpha-dec-osf1 assembler gives only a warning for `.set' |
870 | # (but it doesn't work), so we must do a linking check to be sure. | |
871 | cat > conftest1.c <<\EOF | |
872 | extern int glibc_conftest_frobozz; | |
873 | main () { printf ("%d\n", glibc_conftest_frobozz); } | |
874 | EOF | |
875 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
cb2f05ed | 876 | -o conftest conftest.s conftest1.c 1>&AC_FD_CC 2>&AC_FD_CC; then |
e215c478 RM |
877 | libc_cv_asm_set_directive=yes |
878 | else | |
879 | libc_cv_asm_set_directive=no | |
880 | fi | |
65b3cbcb | 881 | rm -f conftest*]) |
e215c478 RM |
882 | if test $libc_cv_asm_set_directive = yes; then |
883 | AC_DEFINE(HAVE_ASM_SET_DIRECTIVE) | |
884 | fi | |
885 | ||
2aa15430 UD |
886 | # The Aix ld uses global .symbol_names instead of symbol_names. |
887 | case "$os" in | |
888 | aix4.3*) | |
889 | AC_DEFINE(HAVE_ASM_GLOBAL_DOT_NAME) | |
890 | esac | |
891 | ||
377a515b UD |
892 | AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive, |
893 | [cat > conftest.s <<EOF | |
2293395f | 894 | ${libc_cv_dot_text} |
4cca6b86 | 895 | _sym: |
377a515b UD |
896 | .symver _sym,sym@VERS |
897 | EOF | |
898 | if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then | |
899 | libc_cv_asm_symver_directive=yes | |
900 | else | |
901 | libc_cv_asm_symver_directive=no | |
902 | fi | |
903 | rm -f conftest*]) | |
904 | AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl | |
905 | if test $libc_cv_asm_symver_directive = yes; then | |
906 | cat > conftest.s <<EOF | |
2293395f | 907 | ${libc_cv_dot_text} |
4cca6b86 | 908 | _sym: |
377a515b UD |
909 | .symver _sym,sym@VERS |
910 | EOF | |
911 | cat > conftest.map <<EOF | |
f43ce637 | 912 | VERS_1 { |
377a515b UD |
913 | global: sym; |
914 | }; | |
f43ce637 UD |
915 | |
916 | VERS_2 { | |
917 | global: sym; | |
918 | } VERS_1; | |
377a515b UD |
919 | EOF |
920 | if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then | |
5ae3e846 UD |
921 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS -shared -o conftest.so conftest.o |
922 | -nostartfiles -nostdlib | |
ae1025be UD |
923 | -Wl,--version-script,conftest.map |
924 | 1>&AC_FD_CC]); | |
377a515b UD |
925 | then |
926 | libc_cv_ld_version_script_option=yes | |
927 | else | |
928 | libc_cv_ld_version_script_option=no | |
929 | fi | |
930 | else | |
931 | libc_cv_ld_version_script_option=no | |
932 | fi | |
933 | else | |
934 | libc_cv_ld_version_script_option=no | |
935 | fi | |
936 | rm -f conftest*]) | |
7499a22a RM |
937 | if test $shared != no && |
938 | test $libc_cv_asm_symver_directive = yes && | |
650425ce UD |
939 | test $libc_cv_ld_version_script_option = yes && |
940 | test $enable_versioning = yes; then | |
377a515b UD |
941 | VERSIONING=yes |
942 | AC_DEFINE(DO_VERSIONING) | |
943 | else | |
944 | VERSIONING=no | |
945 | fi | |
946 | AC_SUBST(VERSIONING) | |
947 | ||
102a3e8f | 948 | if test $elf = yes && test $shared != no && test $VERSIONING = no; then |
f43ce637 | 949 | echo "\ |
f4017d20 | 950 | *** WARNING: You should not compile GNU libc without versioning. Not using |
f43ce637 UD |
951 | *** versioning will introduce incompatibilities so that old binaries |
952 | *** will not run anymore. | |
50304ef0 | 953 | *** For versioning you need recent binutils (binutils-2.8.1.0.23 or newer)." |
f43ce637 | 954 | fi |
fd26970f UD |
955 | if test $elf = yes; then |
956 | AC_CACHE_CHECK(for .previous assembler directive, | |
957 | libc_cv_asm_previous_directive, [dnl | |
958 | cat > conftest.s <<EOF | |
959 | .section foo_section | |
960 | .previous | |
961 | EOF | |
962 | if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then | |
963 | libc_cv_asm_previous_directive=yes | |
964 | else | |
965 | libc_cv_asm_previous_directive=no | |
966 | fi | |
967 | rm -f conftest*]) | |
968 | if test $libc_cv_asm_previous_directive = yes; then | |
969 | AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE) | |
970 | else | |
971 | AC_CACHE_CHECK(for .popsection assembler directive, | |
972 | libc_cv_asm_popsection_directive, [dnl | |
973 | cat > conftest.s <<EOF | |
974 | .pushsection foo_section | |
975 | .popsection | |
976 | EOF | |
977 | if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then | |
978 | libc_cv_asm_popsection_directive=yes | |
979 | else | |
980 | libc_cv_asm_popsection_directive=no | |
981 | fi | |
982 | rm -f conftest*]) | |
983 | if test $libc_cv_asm_popsection_directive = yes; then | |
984 | AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE) | |
985 | fi | |
986 | fi | |
2d499f55 UD |
987 | AC_CACHE_CHECK(for .protected and .hidden assembler directive, |
988 | libc_cv_asm_protected_directive, [dnl | |
989 | cat > conftest.s <<EOF | |
990 | .protected foo | |
991 | foo: | |
992 | .hidden bar | |
993 | bar: | |
994 | EOF | |
995 | if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then | |
996 | libc_cv_asm_protected_directive=yes | |
997 | else | |
998 | libc_cv_asm_protected_directive=no | |
999 | fi | |
1000 | rm -f conftest*]) | |
1001 | AC_SUBST(libc_cv_asm_protected_directive) | |
5688da55 | 1002 | AC_DEFINE(HAVE_PROTECTED) |
0fb7851f | 1003 | |
0d01dace UD |
1004 | if test $libc_cv_asm_protected_directive = yes; then |
1005 | AC_CACHE_CHECK(whether __attribute__((visibility())) is supported, | |
1006 | libc_cv_visibility_attribute, | |
1007 | [cat > conftest.c <<EOF | |
1008 | int foo __attribute__ ((visibility ("hidden"))) = 1; | |
1009 | int bar __attribute__ ((visibility ("protected"))) = 1; | |
1010 | EOF | |
1011 | libc_cv_visibility_attribute=no | |
1012 | if ${CC-cc} -Werror -S conftest.c -o conftest.s >/dev/null 2>&1; then | |
1013 | if grep '\.hidden.*foo' conftest.s >/dev/null; then | |
1014 | if grep '\.protected.*bar' conftest.s >/dev/null; then | |
1015 | libc_cv_visibility_attribute=yes | |
1016 | fi | |
1017 | fi | |
1018 | fi | |
1019 | rm -f conftest.[cs] | |
1020 | ]) | |
1021 | if test $libc_cv_visibility_attribute = yes; then | |
1022 | AC_DEFINE(HAVE_VISIBILITY_ATTRIBUTE) | |
1023 | fi | |
1024 | fi | |
1025 | ||
1026 | if test $libc_cv_visibility_attribute = yes -a $gnu_ld = yes; then | |
1027 | AC_CACHE_CHECK(whether to put _rtld_local into .sdata section, | |
1028 | libc_cv_have_sdata_section, | |
1029 | [echo "int i;" > conftest.c | |
1030 | libc_cv_have_sdata_section=no | |
1031 | if ${CC-cc} -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \ | |
1032 | | grep '\.sdata' >/dev/null; then | |
1033 | libc_cv_have_sdata_section=yes | |
1034 | fi | |
1035 | rm -f conftest.c conftest.so | |
1036 | ]) | |
1037 | if test $libc_cv_have_sdata_section = yes; then | |
1038 | AC_DEFINE(HAVE_SDATA_SECTION) | |
1039 | fi | |
1040 | fi | |
1041 | ||
5241882c UD |
1042 | AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support, |
1043 | libc_cv_initfinit_array, [dnl | |
1044 | cat > conftest.c <<EOF | |
1045 | int _start (void) { return 0; } | |
1046 | int __start (void) { return 0; } | |
1047 | int foo (void) { return 1; } | |
1048 | #ifdef __i386__ | |
1049 | asm (".section .init_array\n\t.long foo"); | |
1050 | #else | |
1051 | # error "define appropriately for the architecture" | |
1052 | #endif | |
1053 | EOF | |
1054 | if AC_TRY_COMMAND([${CC-cc} -o conftest conftest.c | |
1055 | -static -nostartfiles -nostdlib 1>&AC_FD_CC]) | |
1056 | then | |
1057 | if readelf -S conftest | fgrep INIT_ARRAY > /dev/null; then | |
1058 | libc_cv_initfinit_array=yes | |
1059 | else | |
1060 | libc_cv_initfinit_array=no | |
1061 | fi | |
1062 | else | |
1063 | libc_cv_initfinit_array=no | |
1064 | fi | |
1065 | rm -f conftest*]) | |
1066 | AC_SUBST(libc_cv_initfinit_array) | |
1067 | if test $libc_cv_initfinit_array = yes; then | |
1068 | AC_DEFINE(HAVE_INITFINI_ARRAY) | |
1069 | fi | |
1070 | ||
0fb7851f UD |
1071 | AC_CACHE_CHECK(for -z nodelete option, |
1072 | libc_cv_z_nodelete, [dnl | |
1073 | cat > conftest.c <<EOF | |
1074 | int _start (void) { return 42; } | |
1075 | EOF | |
35cd3c97 AJ |
1076 | if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c |
1077 | -nostartfiles -nostdlib | |
1078 | -Wl,--enable-new-dtags,-z,nodelete 1>&AC_FD_CC]) | |
0fb7851f UD |
1079 | then |
1080 | libc_cv_z_nodelete=yes | |
1081 | else | |
1082 | libc_cv_z_nodelete=no | |
1083 | fi | |
1084 | rm -f conftest*]) | |
1085 | AC_SUBST(libc_cv_z_nodelete) | |
2f54c82d UD |
1086 | |
1087 | AC_CACHE_CHECK(for -z nodlopen option, | |
1088 | libc_cv_z_nodlopen, [dnl | |
1089 | cat > conftest.c <<EOF | |
1090 | int _start (void) { return 42; } | |
1091 | EOF | |
35cd3c97 AJ |
1092 | if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c |
1093 | -nostartfiles -nostdlib | |
1094 | -Wl,--enable-new-dtags,-z,nodlopen 1>&AC_FD_CC]) | |
2f54c82d UD |
1095 | then |
1096 | libc_cv_z_nodlopen=yes | |
1097 | else | |
1098 | libc_cv_z_nodlopen=no | |
1099 | fi | |
1100 | rm -f conftest*]) | |
1101 | AC_SUBST(libc_cv_z_nodlopen) | |
5d916713 UD |
1102 | |
1103 | AC_CACHE_CHECK(for -z initfirst option, | |
1104 | libc_cv_z_initfirst, [dnl | |
1105 | cat > conftest.c <<EOF | |
1106 | int _start (void) { return 42; } | |
1107 | EOF | |
35cd3c97 AJ |
1108 | if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c |
1109 | -nostartfiles -nostdlib | |
1110 | -Wl,--enable-new-dtags,-z,initfirst 1>&AC_FD_CC]) | |
5d916713 UD |
1111 | then |
1112 | libc_cv_z_initfirst=yes | |
1113 | else | |
1114 | libc_cv_z_initfirst=no | |
1115 | fi | |
1116 | rm -f conftest*]) | |
1117 | AC_SUBST(libc_cv_z_initfirst) | |
639c3248 UD |
1118 | |
1119 | AC_CACHE_CHECK(for -Bgroup option, | |
1120 | libc_cv_Bgroup, [dnl | |
1121 | cat > conftest.c <<EOF | |
1122 | int _start (void) { return 42; } | |
1123 | EOF | |
1124 | if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c -Wl,-Bgroup -nostdlib 1>&AC_FD_CC]) | |
1125 | then | |
1126 | libc_cv_Bgroup=yes | |
1127 | else | |
1128 | libc_cv_Bgroup=no | |
1129 | fi | |
1130 | rm -f conftest*]) | |
1131 | AC_SUBST(libc_cv_Bgroup) | |
a711b01d UD |
1132 | |
1133 | AC_CACHE_CHECK(for -z combreloc, | |
1134 | libc_cv_z_combreloc, [dnl | |
1135 | cat > conftest.c <<EOF | |
d555194c UD |
1136 | extern int bar (int); |
1137 | extern int mumble; | |
1138 | int foo (void) { return bar (mumble); } | |
a711b01d | 1139 | EOF |
35cd3c97 AJ |
1140 | if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c |
1141 | -nostdlib -nostartfiles | |
1142 | -Wl,-z,combreloc 1>&AC_FD_CC]) | |
a711b01d UD |
1143 | then |
1144 | dnl The following test is a bit weak. We must use a tool which can test | |
1145 | dnl cross-platform since the gcc used can be a cross compiler. Without | |
1146 | dnl introducing new options this is not easily doable. Instead use a tool | |
1147 | dnl which always is cross-platform: readelf. To detect whether -z combreloc | |
1148 | dnl look for a section named .rel.dyn. | |
fdde8349 UD |
1149 | if readelf -S conftest.so | grep '\.rel\(a\|\)\.dyn' > /dev/null; then |
1150 | libc_cv_z_combreloc=yes | |
1151 | else | |
1152 | libc_cv_z_combreloc=no | |
a711b01d | 1153 | fi |
fdde8349 UD |
1154 | else |
1155 | libc_cv_z_combreloc=no | |
a711b01d UD |
1156 | fi |
1157 | rm -f conftest*]) | |
fdde8349 UD |
1158 | if test "$libc_cv_z_combreloc" = yes; then |
1159 | AC_DEFINE(HAVE_Z_COMBRELOC) | |
1160 | fi | |
fd26970f | 1161 | fi |
f13df7c7 | 1162 | AC_SUBST(libc_cv_z_combreloc) |
fd26970f | 1163 | |
b8dc6a10 RM |
1164 | if test $elf != yes; then |
1165 | AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini, | |
1166 | [AC_TRY_COMPILE(, [asm (".section .init"); | |
84724245 | 1167 | asm (".section .fini"); |
2293395f | 1168 | asm ("${libc_cv_dot_text}");], |
b8dc6a10 RM |
1169 | libc_cv_have_initfini=yes, |
1170 | libc_cv_have_initfini=no)]) | |
1171 | AC_SUBST(libc_cv_have_initfini)dnl | |
1172 | if test $libc_cv_have_initfini = yes; then | |
1173 | AC_DEFINE(HAVE_INITFINI) | |
1174 | fi | |
1175 | fi | |
e215c478 | 1176 | |
e26dd47f UD |
1177 | if test $elf = yes -a $gnu_ld = yes; then |
1178 | AC_CACHE_CHECK(whether cc puts quotes around section names, | |
1179 | libc_cv_have_section_quotes, | |
1180 | [cat > conftest.c <<EOF | |
1181 | static const int foo | |
1182 | __attribute__ ((section ("bar"))) = 1; | |
1183 | EOF | |
1184 | if ${CC-cc} -S conftest.c -o conftest.s; then | |
1185 | if grep '\.section.*"bar"' conftest.s >/dev/null; then | |
1186 | libc_cv_have_section_quotes=yes | |
1187 | else | |
1188 | libc_cv_have_section_quotes=no | |
1189 | fi | |
1190 | else | |
1191 | libc_cv_have_section_quotes=unknown | |
1192 | fi | |
1193 | rm -f conftest.[cs] | |
1194 | ]) | |
1195 | if test $libc_cv_have_section_quotes = yes; then | |
1196 | AC_DEFINE(HAVE_SECTION_QUOTES) | |
1197 | fi | |
1198 | fi | |
1199 | ||
9a0a462c UD |
1200 | dnl AC_CHECK_ASM_UNDERSCORE([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]) |
1201 | AC_DEFUN(AC_CHECK_ASM_UNDERSCORE, | |
1202 | [cat > conftest.$ac_ext <<EOF | |
1203 | dnl This sometimes fails to find confdefs.h, for some reason. | |
1204 | dnl [#]line __oline__ "[$]0" | |
1205 | [#]line __oline__ "configure" | |
1206 | #include "confdefs.h" | |
1207 | void underscore_test(void) { | |
1208 | return; } | |
1209 | EOF | |
1210 | if AC_TRY_EVAL(ac_compile); then | |
1211 | if grep _underscore_test conftest* >/dev/null; then | |
1212 | ifelse([$1], , :, [rm -f conftest* | |
1213 | $1]) | |
1214 | else | |
1215 | ifelse([$2], , , [rm -f conftest* | |
1216 | $2]) | |
1217 | fi | |
1218 | else | |
1219 | echo "configure: failed program was:" >&AC_FD_CC | |
1220 | cat conftest.$ac_ext >&AC_FD_CC | |
1221 | ifelse([$2], , , [rm -f conftest* | |
1222 | $2]) | |
1223 | fi | |
1224 | rm -f conftest*]) | |
1225 | ||
c224a18a RM |
1226 | if test $elf = yes; then |
1227 | libc_cv_asm_underscores=no | |
1228 | else | |
9a0a462c UD |
1229 | if test $ac_cv_prog_cc_works = yes; then |
1230 | AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores, | |
1231 | [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();], | |
1232 | libc_cv_asm_underscores=yes, | |
1233 | libc_cv_asm_underscores=no)]) | |
1234 | else | |
1235 | AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores, | |
1236 | [AC_CHECK_ASM_UNDERSCORE(libc_cv_asm_underscores=yes, | |
1237 | libc_cv_asm_underscores=no)]) | |
1238 | fi | |
c224a18a RM |
1239 | fi |
1240 | if test $libc_cv_asm_underscores = no; then | |
1241 | AC_DEFINE(NO_UNDERSCORES) | |
1242 | fi | |
1243 | ||
1244 | if test $elf = yes; then | |
1245 | libc_cv_weak_symbols=yes | |
9a97d1f7 UD |
1246 | fi |
1247 | ||
1248 | AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive, | |
75d86c1f | 1249 | [dnl |
c224a18a | 1250 | cat > conftest.s <<EOF |
2293395f | 1251 | ${libc_cv_dot_text} |
c224a18a | 1252 | ${libc_cv_asm_global_directive} foo |
ae1025be | 1253 | foo: |
c224a18a RM |
1254 | .weak foo |
1255 | .weak bar; bar = foo | |
1256 | EOF | |
9a97d1f7 UD |
1257 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then |
1258 | libc_cv_asm_weak_directive=yes | |
1259 | else | |
1260 | libc_cv_asm_weak_directive=no | |
1261 | fi | |
1262 | rm -f conftest*]) | |
c224a18a | 1263 | |
c8cf0b14 | 1264 | if test $libc_cv_asm_weak_directive = no; then |
c224a18a RM |
1265 | AC_CACHE_CHECK(for assembler .weakext directive, |
1266 | libc_cv_asm_weakext_directive, | |
1267 | [dnl | |
1268 | cat > conftest.s <<EOF | |
2293395f | 1269 | ${libc_cv_dot_text} |
c224a18a | 1270 | ${libc_cv_asm_global_directive} foo |
ae1025be | 1271 | foo: |
f802accb UD |
1272 | .weakext bar foo |
1273 | .weakext baz | |
1274 | ${libc_cv_asm_global_directive} baz | |
9a97d1f7 | 1275 | baz: |
c224a18a RM |
1276 | EOF |
1277 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then | |
1278 | libc_cv_asm_weakext_directive=yes | |
1279 | else | |
1280 | libc_cv_asm_weakext_directive=no | |
1281 | fi | |
1282 | rm -f conftest*]) | |
1283 | ||
9a97d1f7 | 1284 | fi # no .weak |
c224a18a | 1285 | |
ffcf9634 | 1286 | if test $libc_cv_asm_weak_directive = yes; then |
c224a18a | 1287 | AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE) |
ffcf9634 | 1288 | elif test $libc_cv_asm_weakext_directive = yes; then |
c224a18a RM |
1289 | AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE) |
1290 | fi | |
1291 | ||
b15cb495 | 1292 | dnl The standard hppa assembler uses `;' to start comments and `!' |
eacde9d0 UD |
1293 | dnl as a line separator. CRIS uses `;' to start comments and `@' for |
1294 | dnl line separator. | |
b15cb495 | 1295 | case "${host_cpu}-${host_os}" in |
eacde9d0 UD |
1296 | cris*) |
1297 | libc_cv_asm_line_sep='@' | |
1298 | AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep) | |
1299 | ;; | |
b15cb495 UD |
1300 | hppa*linux*) |
1301 | AC_CACHE_CHECK(for assembler line separator, | |
1302 | libc_cv_asm_line_sep, [dnl | |
1303 | cat > conftest.s <<EOF | |
1304 | nop ; is_old_puffin | |
1305 | EOF | |
1306 | if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then | |
1307 | libc_cv_asm_line_sep='!' | |
1308 | else | |
1309 | if test -z "$enable_hacker_mode"; then | |
1310 | echo "*** You need a newer assembler to compile glibc" | |
1311 | rm -f conftest* | |
1312 | exit 1 | |
1313 | fi | |
1314 | libc_cv_asm_line_sep=';' | |
1315 | fi | |
1316 | rm -f conftest*]) | |
1317 | AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep) | |
1318 | ;; | |
1319 | esac | |
1320 | ||
a641835a RM |
1321 | AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl |
1322 | cat > conftest.c <<\EOF | |
5f0e6fc7 | 1323 | _start () {} |
dcf0671d UD |
1324 | int __eh_pc; |
1325 | __throw () {} | |
a641835a | 1326 | EOF |
dcea62dd RM |
1327 | dnl No \ in command here because it ends up inside ''. |
1328 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS | |
1329 | -nostdlib -nostartfiles -Wl,--no-whole-archive | |
ae1025be | 1330 | -o conftest conftest.c 1>&AC_FD_CC]); then |
a641835a RM |
1331 | libc_cv_ld_no_whole_archive=yes |
1332 | else | |
1333 | libc_cv_ld_no_whole_archive=no | |
1334 | fi | |
1335 | rm -f conftest*]) | |
b17277cf UD |
1336 | if test $libc_cv_ld_no_whole_archive = yes; then |
1337 | no_whole_archive=-Wl,--no-whole-archive | |
1338 | fi | |
1339 | AC_SUBST(no_whole_archive)dnl | |
a641835a | 1340 | |
dff14448 | 1341 | AC_CACHE_CHECK(for gcc -fexceptions, libc_cv_gcc_exceptions, [dnl |
b236e99d UD |
1342 | cat > conftest.c <<\EOF |
1343 | _start () {} | |
1344 | int __eh_pc; | |
1345 | __throw () {} | |
1346 | EOF | |
1347 | dnl No \ in command here because it ends up inside ''. | |
1348 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS | |
dff14448 | 1349 | -nostdlib -nostartfiles -fexceptions |
ae1025be | 1350 | -o conftest conftest.c 1>&AC_FD_CC]); then |
dff14448 | 1351 | libc_cv_gcc_exceptions=yes |
b236e99d | 1352 | else |
dff14448 | 1353 | libc_cv_gcc_exceptions=no |
b236e99d UD |
1354 | fi |
1355 | rm -f conftest*]) | |
dff14448 UD |
1356 | if test $libc_cv_gcc_exceptions = yes; then |
1357 | exceptions=-fexceptions | |
b17277cf | 1358 | fi |
dff14448 | 1359 | AC_SUBST(exceptions)dnl |
b236e99d | 1360 | |
d71b808a UD |
1361 | if test "$base_machine" = alpha ; then |
1362 | AC_CACHE_CHECK(for function ..ng prefix, libc_cv_gcc_alpha_ng_prefix, [dnl | |
1363 | cat > conftest.c <<\EOF | |
1364 | foo () { } | |
1365 | EOF | |
1366 | dnl | |
9756dfe1 | 1367 | if AC_TRY_COMMAND([${CC-cc} -S conftest.c -o - | fgrep "\$foo..ng" > /dev/null]); |
d71b808a UD |
1368 | then |
1369 | libc_cv_gcc_alpha_ng_prefix=yes | |
1370 | else | |
1371 | libc_cv_gcc_alpha_ng_prefix=no | |
1372 | fi | |
1373 | rm -f conftest* ]) | |
1374 | if test $libc_cv_gcc_alpha_ng_prefix = yes ; then | |
1375 | AC_DEFINE(ASM_ALPHA_NG_SYMBOL_PREFIX, "$") | |
1376 | else | |
1377 | AC_DEFINE(ASM_ALPHA_NG_SYMBOL_PREFIX, "") | |
1378 | fi | |
1379 | fi | |
1380 | ||
66000494 UD |
1381 | if test "$host_cpu" = powerpc ; then |
1382 | # Check for a bug present in at least versions 2.8.x of GCC | |
1383 | # and versions 1.0.x of EGCS. | |
1384 | AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl | |
1385 | AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],, | |
1386 | libc_cv_c_asmcr0_bug='no', | |
1387 | libc_cv_c_asmcr0_bug='yes')]) | |
1388 | if test "$libc_cv_c_asmcr0_bug" != 'no'; then | |
1389 | AC_DEFINE(BROKEN_PPC_ASM_CR0) | |
1390 | fi | |
1391 | fi | |
1392 | ||
650425ce UD |
1393 | AC_CACHE_CHECK(for DWARF2 unwind info support, libc_cv_gcc_dwarf2_unwind_info, |
1394 | [cat > conftest.c <<EOF | |
1395 | #line __oline__ "configure" | |
1396 | static char __EH_FRAME_BEGIN__[]; | |
1397 | _start () | |
1398 | { | |
9756dfe1 | 1399 | #ifdef CHECK__register_frame |
650425ce UD |
1400 | __register_frame (__EH_FRAME_BEGIN__); |
1401 | __deregister_frame (__EH_FRAME_BEGIN__); | |
9756dfe1 UD |
1402 | #endif |
1403 | #ifdef CHECK__register_frame_info | |
1404 | __register_frame_info (__EH_FRAME_BEGIN__); | |
1405 | __deregister_frame_info (__EH_FRAME_BEGIN__); | |
1406 | #endif | |
650425ce UD |
1407 | } |
1408 | int __eh_pc; | |
1409 | __throw () {} | |
1410 | /* FIXME: this is fragile. */ | |
1411 | malloc () {} | |
1412 | strcmp () {} | |
1413 | strlen () {} | |
1414 | memcpy () {} | |
1415 | memset () {} | |
1416 | free () {} | |
1417 | abort () {} | |
dfd2257a | 1418 | __bzero () {} |
650425ce UD |
1419 | EOF |
1420 | dnl No \ in command here because it ends up inside ''. | |
9756dfe1 | 1421 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS -DCHECK__register_frame_info |
650425ce UD |
1422 | -nostdlib -nostartfiles |
1423 | -o conftest conftest.c -lgcc >&AC_FD_CC]); then | |
9756dfe1 | 1424 | libc_cv_gcc_dwarf2_unwind_info=static |
650425ce UD |
1425 | else |
1426 | libc_cv_gcc_dwarf2_unwind_info=no | |
1427 | fi | |
9756dfe1 UD |
1428 | if test $libc_cv_gcc_dwarf2_unwind_info = no; then |
1429 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS -DCHECK__register_frame | |
1430 | -nostdlib -nostartfiles | |
1431 | -o conftest conftest.c -lgcc >&AC_FD_CC]); then | |
1432 | libc_cv_gcc_dwarf2_unwind_info=yes | |
1433 | else | |
1434 | libc_cv_gcc_dwarf2_unwind_info=no | |
1435 | fi | |
1436 | fi | |
650425ce | 1437 | rm -f conftest*]) |
9756dfe1 UD |
1438 | case $libc_cv_gcc_dwarf2_unwind_info in |
1439 | yes) | |
650425ce | 1440 | AC_DEFINE(HAVE_DWARF2_UNWIND_INFO) |
9756dfe1 UD |
1441 | ;; |
1442 | static) | |
1443 | AC_DEFINE(HAVE_DWARF2_UNWIND_INFO) | |
1444 | AC_DEFINE(HAVE_DWARF2_UNWIND_INFO_STATIC) | |
1445 | ;; | |
1446 | esac | |
650425ce | 1447 | |
a8eab8b1 UD |
1448 | dnl Check whether compiler understands __builtin_expect. |
1449 | AC_CACHE_CHECK(for __builtin_expect, libc_cv_gcc_builtin_expect, | |
1450 | [cat > conftest.c <<EOF | |
1451 | #line __oline__ "configure" | |
1452 | int foo (int a) | |
1453 | { | |
1454 | a = __builtin_expect (a, 10); | |
1455 | return a == 10 ? 0 : 1; | |
1456 | } | |
1457 | EOF | |
1458 | dnl No \ in command here because it ends up inside ''. | |
1459 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS -nostdlib -nostartfiles | |
1460 | -o conftest conftest.c -lgcc >&AC_FD_CC]); then | |
1461 | libc_cv_gcc_builtin_expect=yes | |
1462 | else | |
1463 | libc_cv_gcc_builtin_expect=no | |
1464 | fi | |
1465 | rm -f conftest*]) | |
1466 | if test "$libc_cv_gcc_builtin_expect" = yes; then | |
1467 | AC_DEFINE(HAVE_BUILTIN_EXPECT) | |
1468 | fi | |
1469 | ||
d555194c UD |
1470 | AC_CACHE_CHECK(for __builtin_memset, libc_cv_gcc_builtin_memset, [dnl |
1471 | cat > conftest.c <<\EOF | |
1472 | void zero (void *x) | |
1473 | { | |
a52d1562 | 1474 | __builtin_memset (x, 0, 1000); |
d555194c UD |
1475 | } |
1476 | EOF | |
1477 | dnl | |
1478 | if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "memset" > /dev/null]); | |
1479 | then | |
1480 | libc_cv_gcc_builtin_memset=no | |
1481 | else | |
1482 | libc_cv_gcc_builtin_memset=yes | |
1483 | fi | |
1484 | rm -f conftest* ]) | |
1485 | if test "$libc_cv_gcc_builtin_memset" = yes ; then | |
1486 | AC_DEFINE(HAVE_BUILTIN_MEMSET) | |
1487 | fi | |
1488 | ||
3d558f4e UD |
1489 | dnl Check whether the compiler supports subtraction of local labels. |
1490 | AC_CACHE_CHECK(for local label subtraction, libc_cv_gcc_subtract_local_labels, | |
1491 | [cat > conftest.c <<EOF | |
1492 | changequote(,)dnl | |
1493 | #line __oline__ "configure" | |
1494 | int foo (int a) | |
1495 | { | |
1496 | static const int ar[] = { &&l1 - &&l1, &&l2 - &&l1 }; | |
1497 | void *p = &&l1 + ar[a]; | |
1498 | goto *p; | |
1499 | l1: | |
1500 | return 1; | |
1501 | l2: | |
1502 | return 2; | |
1503 | } | |
1504 | changequote([,])dnl | |
1505 | EOF | |
1506 | dnl No \ in command here because it ends up inside ''. | |
1507 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS -nostdlib -nostartfiles | |
1508 | -o conftest conftest.c -lgcc >&AC_FD_CC]); then | |
1509 | libc_cv_gcc_subtract_local_labels=yes | |
1510 | else | |
1511 | libc_cv_gcc_subtract_local_labels=no | |
1512 | fi | |
1513 | rm -f conftest*]) | |
1514 | if test "$libc_cv_gcc_subtract_local_labels" = yes; then | |
1515 | AC_DEFINE(HAVE_SUBTRACT_LOCAL_LABELS) | |
1516 | fi | |
1517 | ||
c8f3e6db UD |
1518 | dnl Check whether we have the gd library available. |
1519 | AC_MSG_CHECKING(for libgd) | |
6dab8688 UD |
1520 | if test "$with_gd" != "no"; then |
1521 | old_CFLAGS="$CFLAGS" | |
1522 | CFLAGS="$CFLAGS $libgd_include" | |
1523 | old_LDFLAGS="$LDFLAGS" | |
1524 | LDFLAGS="$LDFLAGS $libgd_ldflags" | |
1525 | old_LIBS="$LIBS" | |
1526 | LIBS="$LIBS -lgd -lpng -lz -lm" | |
1527 | AC_TRY_LINK([#include <gd.h>], [gdImagePng (0, 0)], LIBGD=yes, LIBGD=no) | |
1528 | CFLAGS="$old_CFLAGS" | |
1529 | LDFLAGS="$old_LDFLAGS" | |
1530 | LIBS="$old_LIBS" | |
1531 | else | |
1532 | LIBGD=no | |
1533 | fi | |
c8f3e6db UD |
1534 | AC_MSG_RESULT($LIBGD) |
1535 | AC_SUBST(LIBGD) | |
3d558f4e | 1536 | |
8ed1e7d5 GK |
1537 | dnl check for the size of 'long double'. |
1538 | AC_CHECK_SIZEOF(long double, 0) | |
1539 | sizeof_long_double=$ac_cv_sizeof_long_double | |
1540 | AC_SUBST(sizeof_long_double) | |
1541 | ||
c224a18a RM |
1542 | ### End of automated tests. |
1543 | ### Now run sysdeps configure fragments. | |
1544 | ||
28f540f4 RM |
1545 | # sysdeps configure fragments may set these with files to be linked below. |
1546 | libc_link_dests= | |
1547 | libc_link_sources= | |
1548 | ||
cb343854 | 1549 | # They also can set these variables. |
591e1ffb | 1550 | use_ldconfig=no |
cb343854 | 1551 | ldd_rewrite_script=no |
77259608 | 1552 | libc_cv_sysconfdir=$sysconfdir |
74bd2300 | 1553 | libc_cv_gcc_unwind_find_fde=no |
cb343854 | 1554 | |
28f540f4 RM |
1555 | # Iterate over all the sysdep directories we will use, running their |
1556 | # configure fragments, and looking for a uname implementation. | |
1557 | uname= | |
1558 | for dir in $sysnames; do | |
57ba7bb4 UD |
1559 | case $dir in |
1560 | /*) dest=$dir ;; | |
1561 | *) dest=$srcdir/$dir ;; | |
1562 | esac | |
1563 | if test -r $dest/configure; then | |
1564 | AC_MSG_RESULT(running configure fragment for $dest) | |
1565 | . $dest/configure | |
28f540f4 | 1566 | fi |
4ca84cff | 1567 | [ |
28f540f4 | 1568 | if test -z "$uname"; then |
e7f1f046 UD |
1569 | if test -r $dest/uname.c || |
1570 | test -r $dest/uname.S || | |
1571 | { test -r $dest/syscalls.list && | |
1572 | grep '^uname[ ]' $dest/syscalls.list >/dev/null; }; then | |
b86199fb | 1573 | uname=$dir |
4ca84cff | 1574 | fi |
28f540f4 | 1575 | fi |
4ca84cff | 1576 | ]dnl |
28f540f4 RM |
1577 | done |
1578 | ||
74bd2300 UD |
1579 | if test x$libc_cv_gcc_unwind_find_fde = xyes; then |
1580 | AC_DEFINE(EXPORT_UNWIND_FIND_FDE) | |
1581 | fi | |
1582 | AC_SUBST(libc_cv_gcc_unwind_find_fde) | |
1583 | ||
28f540f4 RM |
1584 | AC_LINK_FILES(`echo $libc_link_sources`, `echo $libc_link_dests`) |
1585 | ||
1586 | # If we will use the generic uname implementation, we must figure out what | |
1587 | # it will say by examining the system, and write the results in config-name.h. | |
e7f1f046 | 1588 | if test "$uname" = "sysdeps/generic"; then |
28f540f4 RM |
1589 | |
1590 | changequote(,)dnl | |
1591 | uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'` | |
1592 | changequote([,])dnl | |
1593 | if test $uname_sysname != $config_os; then | |
1594 | config_release=`echo $config_os | sed s/$uname_sysname//` | |
1595 | fi | |
1596 | dnl | |
1597 | AC_DEFUN(LIBC_KERNEL_ID, [dnl | |
1598 | if test -r /vmunix; then | |
1599 | kernel_id=`strings /vmunix | grep UNIX` | |
1600 | elif test -r /dynix; then | |
1601 | kernel_id=`strings /dynix | grep DYNIX` | |
1602 | else | |
1603 | kernel_id= | |
1604 | fi | |
1605 | ])dnl | |
1606 | ||
b8dc6a10 | 1607 | AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl |
28f540f4 RM |
1608 | AC_REQUIRE([LIBC_KERNEL_ID])dnl |
1609 | changequote(,)dnl | |
1610 | kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'` | |
1611 | changequote([,])dnl | |
1612 | if test x`echo "$config_release" | sed "s/^$kernel_release//"` \ | |
1613 | != x$config_release; then | |
1614 | # The configuration release is a substring of the kernel release. | |
1615 | libc_cv_uname_release=$kernel_release | |
1616 | elif test x$config_release != x; then | |
1617 | libc_cv_uname_release=$config_release | |
1618 | elif test x$kernel_release != x; then | |
1619 | libc_cv_uname_release=$kernel_release | |
1620 | else | |
1621 | libc_cv_uname_release=unknown | |
1622 | fi]) | |
28f540f4 RM |
1623 | uname_release="$libc_cv_uname_release" |
1624 | ||
b8dc6a10 | 1625 | AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl |
28f540f4 RM |
1626 | AC_REQUIRE([LIBC_KERNEL_ID])dnl |
1627 | changequote(,)dnl | |
1628 | kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'` | |
1629 | changequote([,])dnl | |
1630 | if test -n "$kernel_version"; then | |
1631 | libc_cv_uname_version="$kernel_version" | |
1632 | else | |
1633 | libc_cv_uname_version=unknown | |
1634 | fi]) | |
28f540f4 RM |
1635 | uname_version="$libc_cv_uname_version" |
1636 | ||
1637 | AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl | |
1638 | config_uname=config-name.h:config-name.in | |
1639 | else | |
1640 | # For non-generic uname, we don't need to create config-name.h at all. | |
1641 | config_uname= | |
1642 | fi | |
1643 | ||
96aa2d94 RM |
1644 | AC_MSG_CHECKING(stdio selection) |
1645 | AC_SUBST(stdio) | |
1646 | case $stdio in | |
1647 | libio) AC_DEFINE(USE_IN_LIBIO) ;; | |
1648 | default) stdio=stdio ;; | |
1649 | esac | |
1650 | AC_MSG_RESULT($stdio) | |
1651 | ||
a53bad16 UD |
1652 | # Test for old glibc 2.0.x headers so that they can be removed properly |
1653 | # Search only in includedir. | |
1654 | AC_MSG_CHECKING(for old glibc 2.0.x headers) | |
350eb336 | 1655 | if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h" |
a53bad16 UD |
1656 | then |
1657 | old_glibc_headers=yes | |
1658 | else | |
1659 | old_glibc_headers=no | |
1660 | fi | |
1661 | AC_MSG_RESULT($old_glibc_headers) | |
1662 | if test ${old_glibc_headers} = yes; then | |
1663 | AC_MSG_WARN(*** During \"make install\" old headers from glibc 2.0.x will) | |
1664 | AC_MSG_WARN(*** be removed.) | |
1665 | fi | |
b195f6bc | 1666 | AC_SUBST(old_glibc_headers) |
26b4d766 | 1667 | |
84384f5b | 1668 | AC_SUBST(libc_cv_slibdir) |
a1d84548 | 1669 | AC_SUBST(libc_cv_localedir) |
77259608 | 1670 | AC_SUBST(libc_cv_sysconfdir) |
1ef32c3d UD |
1671 | AC_SUBST(libc_cv_rootsbindir) |
1672 | ||
591e1ffb | 1673 | AC_SUBST(use_ldconfig) |
cb343854 | 1674 | AC_SUBST(ldd_rewrite_script) |
84384f5b | 1675 | |
5af3245a | 1676 | AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf) AC_SUBST(xcoff) |
28f540f4 RM |
1677 | if test $gnu_ld = yes; then |
1678 | AC_DEFINE(HAVE_GNU_LD) | |
1679 | fi | |
1680 | if test $gnu_as = yes; then | |
1681 | AC_DEFINE(HAVE_GNU_AS) | |
1682 | fi | |
1683 | if test $elf = yes; then | |
1684 | AC_DEFINE(HAVE_ELF) | |
1685 | fi | |
5af3245a UD |
1686 | if test $xcoff = yes; then |
1687 | AC_DEFINE(HAVE_XCOFF) | |
1688 | fi | |
28f540f4 | 1689 | |
650425ce | 1690 | AC_SUBST(static) |
ff3d7ed3 RM |
1691 | AC_SUBST(shared) |
1692 | if test $shared = default; then | |
1693 | if test $gnu_ld = yes; then | |
1694 | shared=$elf | |
f65fd747 UD |
1695 | else |
1696 | # For now we do not assume shared libs are available. In future more | |
1697 | # tests might become available. | |
1698 | shared=no | |
ff3d7ed3 RM |
1699 | fi |
1700 | fi | |
cc3fa755 UD |
1701 | |
1702 | AC_CACHE_CHECK([whether -fPIC is default], pic_default, | |
1703 | [pic_default=yes | |
1704 | cat > conftest.c <<EOF | |
9756dfe1 | 1705 | #if defined __PIC__ || defined __pic__ || defined PIC || defined pic |
cc3fa755 UD |
1706 | # error PIC is default. |
1707 | #endif | |
1708 | EOF | |
1709 | if eval "${CC-cc} -S conftest.c 2>&AC_FD_CC 1>&AC_FD_CC"; then | |
1710 | pic_default=no | |
1711 | fi | |
1712 | rm -f conftest.*]) | |
1713 | AC_SUBST(pic_default) | |
1714 | ||
ff3d7ed3 RM |
1715 | AC_SUBST(profile) |
1716 | AC_SUBST(omitfp) | |
5a97622d | 1717 | AC_SUBST(bounded) |
5107cf1d | 1718 | AC_SUBST(static_nss) |
5ae3e846 | 1719 | AC_SUBST(nopic_initfini) |
ff3d7ed3 | 1720 | |
edf5b2d7 UD |
1721 | AC_SUBST(DEFINES) |
1722 | ||
7cabd57c UD |
1723 | case "$add_ons" in |
1724 | *door*) linux_doors=yes ;; | |
1725 | *) linux_doors=no ;; | |
1726 | esac | |
1727 | AC_SUBST(linux_doors) | |
1728 | ||
61c83c3f RM |
1729 | dnl See sysdeps/mach/configure.in for this variable. |
1730 | AC_SUBST(mach_interface_list) | |
1731 | ||
28f540f4 RM |
1732 | if test "`(cd $srcdir; pwd)`" = "`pwd`"; then |
1733 | config_makefile= | |
1734 | else | |
1735 | config_makefile=Makefile | |
1736 | fi | |
1737 | ||
ee74a442 UD |
1738 | VERSION=`sed -n -e 's/^#define VERSION "\([^"]*\)"/\1/p' < $srcdir/version.h` |
1739 | RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h` | |
df4ef2ab | 1740 | AC_SUBST(VERSION) |
ee74a442 | 1741 | AC_SUBST(RELEASE) |
df4ef2ab | 1742 | |
737547be UD |
1743 | AC_OUTPUT(config.make glibcbug ${config_makefile} ${config_uname}, [ |
1744 | case $CONFIG_FILES in *config.make*) | |
1745 | echo "$config_vars" >> config.make;; | |
1746 | esac | |
1747 | test -d bits || mkdir bits], [config_vars='$config_vars']) |