]>
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 = $withval" ;; | |
20 | esac | |
21 | ]) | |
75914335 RM |
22 | # Check for a --with-gettext argument and set gettext-srcdir in config.make. |
23 | AC_ARG_WITH(gettext, dnl | |
24 | --with-gettext=DIR find GNU gettext source code in DIR (not needed), | |
25 | [dnl | |
26 | case "$with_gettext" in | |
27 | yes) | |
28 | AC_MSG_ERROR(--with-gettext requires an argument; use --with-gettext=DIR) ;; | |
29 | ''|no) ;; | |
30 | *) | |
31 | config_vars="$config_vars | |
32 | gettext-srcdir = $withval" ;; | |
33 | esac | |
34 | ]) | |
c8f3e6db UD |
35 | # Check for a --with-gd argument and set libgd-LDFLAGS in config.make. |
36 | AC_ARG_WITH(gd, dnl | |
37 | --with-gd=DIR find libgd include dir and library with prefix DIR, | |
38 | [dnl | |
39 | case "$with_gd" in | |
f5f7239f UD |
40 | yes|''|no) ;; |
41 | *) libgd_include="-I$withval/include" | |
c8f3e6db UD |
42 | libgd_ldflags="-L$withval/lib" ;; |
43 | esac | |
44 | ]) | |
f5f7239f UD |
45 | AC_ARG_WITH(gd-include, dnl |
46 | --with-gd-include=DIR find libgd include files in DIR, | |
47 | [dnl | |
48 | case "$with_gd_include" in | |
49 | ''|no) ;; | |
50 | *) libgd_include="-I$withval" ;; | |
51 | esac | |
52 | ]) | |
53 | AC_ARG_WITH(gd-lib, dnl | |
54 | --with-gd-lib=DIR find libgd library files in DIR, | |
55 | [dnl | |
56 | case "$with_gd_lib" in | |
57 | ''|no) ;; | |
58 | *) libgd_ldflags="-L$withval" ;; | |
59 | esac | |
60 | ]) | |
61 | ||
62 | if test -n "$libgd_include"; then | |
63 | config_vars="$config_vars | |
64 | CFLAGS-memprofstat.c = $libgd_include" | |
65 | fi | |
66 | if test -n "$libgd_ldflags"; then | |
67 | config_vars="$config_vars | |
68 | libgd-LDFLAGS = $libgd_ldflags" | |
69 | fi | |
28f540f4 | 70 | |
ff3d7ed3 | 71 | dnl Arguments to specify presence of other packages/features. |
335aa320 | 72 | AC_ARG_WITH(fp, dnl |
a18f587d | 73 | [ --with-fp if using floating-point hardware [default=yes]], |
335aa320 | 74 | with_fp=$withval, with_fp=yes) |
650425ce | 75 | AC_ARG_WITH(binutils, dnl |
a5a0310d | 76 | --with-binutils=PATH specify location of binutils (as and ld), |
650425ce | 77 | path_binutils=$withval, path_binutils='') |
28f540f4 RM |
78 | AC_ARG_WITH(elf, dnl |
79 | --with-elf if using the ELF object format, | |
335aa320 | 80 | elf=$withval, elf=no) |
4d06461a UD |
81 | AC_ARG_WITH(cvs, dnl |
82 | [ --without-cvs if CVS should not be used], | |
83 | with_cvs=$withval, with_cvs=yes) | |
84 | AC_SUBST(with_cvs) | |
28f540f4 | 85 | |
dbe7a0f5 UD |
86 | AC_ARG_WITH(headers, dnl |
87 | [ --with-headers=PATH location of system headers to use | |
88 | [e.g. /usr/src/linux/include] | |
89 | [default=compiler default]], | |
90 | sysheaders=$withval, sysheaders='') | |
91 | ||
deab9dea RM |
92 | AC_ARG_ENABLE(libio, dnl |
93 | [ --enable-libio build in GNU libio instead of GNU stdio], | |
f4482045 RM |
94 | [if test $enableval = yes; then |
95 | stdio=libio | |
96 | else | |
97 | stdio=stdio | |
98 | fi], | |
99 | stdio=default) | |
deab9dea | 100 | |
a18f587d UD |
101 | AC_ARG_ENABLE(sanity-checks, dnl |
102 | [ --disable-sanity-checks really do not use threads (should not be used | |
103 | except in special situations) [default=yes]], | |
104 | enable_sanity=$enableval, enable_sanity=yes) | |
105 | ||
650425ce UD |
106 | dnl Arguments to enable or disable building the static, shared, profiled, |
107 | dnl and -fomit-frame-pointer libraries. | |
b38bb8ca UD |
108 | dnl I've disabled this for now since we cannot build glibc without static |
109 | dnl libraries built in the moment. | |
110 | dnl AC_ARG_ENABLE(static, dnl | |
111 | dnl [ --enable-static build static library [default=yes]], | |
112 | dnl static=$enableval, static=yes) | |
5c2a0669 | 113 | static=yes |
ff3d7ed3 RM |
114 | AC_ARG_ENABLE(shared, dnl |
115 | [ --enable-shared build shared library [default=yes if GNU ld & ELF]], | |
6b3a2224 | 116 | shared=$enableval, shared=default) |
ff3d7ed3 RM |
117 | AC_ARG_ENABLE(profile, dnl |
118 | [ --enable-profile build profiled library [default=yes]], | |
6b3a2224 | 119 | profile=$enableval, profile=yes) |
ff3d7ed3 | 120 | AC_ARG_ENABLE(omitfp, dnl |
6b3a2224 RM |
121 | [ --enable-omitfp build undebuggable optimized library [default=no]], |
122 | omitfp=$enableval, omitfp=no) | |
5a97622d UD |
123 | AC_ARG_ENABLE(bounded, dnl |
124 | [ --enable-bounded build with runtime bounds checking [default=no]], | |
125 | bounded=$enableval, bounded=no) | |
650425ce UD |
126 | AC_ARG_ENABLE(versioning, dnl |
127 | [ --disable-versioning do not include versioning information in the | |
128 | library objects [default=yes if supported]], | |
129 | enable_versioning=$enableval, enable_versioning=yes) | |
6b3a2224 RM |
130 | |
131 | dnl Generic infrastructure for drop-in additions to libc. | |
132 | AC_ARG_ENABLE(add-ons, dnl | |
73237de3 UD |
133 | [ --enable-add-ons[=DIR1,DIR2]... |
134 | configure and build add-ons in DIR1,DIR2,... | |
135 | search for add-ons if no parameter given], | |
61952351 | 136 | [case "$enableval" in |
9c4c0024 UD |
137 | yes) add_ons=`cd $srcdir && echo */configure | sed -e 's!/configure!!g'` |
138 | test "$add_ons" = "*" && add_ons= ;; | |
61952351 UD |
139 | *) add_ons=`echo "$enableval" | sed 's/,/ /g'`;; |
140 | esac], | |
141 | [add_ons=]) | |
142 | ||
6b3a2224 | 143 | AC_CONFIG_SUBDIRS($add_ons) |
57ba7bb4 | 144 | add_ons_pfx= |
da74e902 | 145 | if test x"$add_ons" != x; then |
57ba7bb4 | 146 | for f in $add_ons; do |
af6f3906 UD |
147 | # Test whether such a subdir really exists. |
148 | if test -d $srcdir/$f; then | |
149 | add_ons_pfx="$add_ons_pfx $f/" | |
150 | else | |
151 | AC_MSG_ERROR(add-on directory \"$f\" does not exist) | |
152 | fi | |
57ba7bb4 UD |
153 | done |
154 | fi | |
ff3d7ed3 | 155 | |
5107cf1d UD |
156 | dnl On some platforms we cannot use dynamic loading. We must provide |
157 | dnl static NSS modules. | |
158 | AC_ARG_ENABLE(static-nss, dnl | |
159 | [ --enable-static-nss build static NSS modules [default=no]], | |
160 | static_nss=$enableval, static_nss=no) | |
161 | if test x"$static_nss" = xyes; then | |
162 | AC_DEFINE(DO_STATIC_NSS) | |
163 | fi | |
164 | ||
73237de3 | 165 | AC_ARG_ENABLE(force-install, |
310b3460 | 166 | [ --disable-force-install don't force installation of files from this package, |
73237de3 UD |
167 | even if they are older than the installed files], |
168 | force_install=$enableval, force_install=yes) | |
169 | AC_SUBST(force_install) | |
170 | ||
958f238f UD |
171 | dnl On some platforms we allow dropping compatibility with all kernel |
172 | dnl versions. | |
173 | AC_ARG_ENABLE(kernel, | |
b5b53bdb | 174 | [ --enable-kernel=VERSION compile for compatibility with kernel not older |
958f238f UD |
175 | than VERSION], |
176 | minimum_kernel=$enableval) | |
177 | ||
28f540f4 | 178 | AC_CANONICAL_HOST |
8a523922 UD |
179 | |
180 | # The way shlib-versions is used to generate soversions.mk uses a | |
181 | # fairly simplistic model for name recognition that can't distinguish | |
182 | # i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os | |
183 | # of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can | |
184 | # tell. This doesn't get used much beyond that, so it's fairly safe. | |
185 | case "$host_os" in | |
186 | linux*) | |
187 | ;; | |
188 | gnu*) | |
189 | host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'` | |
190 | ;; | |
191 | esac | |
192 | ||
28f540f4 RM |
193 | # We keep the original values in `$config_*' and never modify them, so we |
194 | # can write them unchanged into config.make. Everything else uses | |
195 | # $machine, $vendor, and $os, and changes them whenever convenient. | |
196 | config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os | |
197 | ||
a2fe9c76 RM |
198 | # Some configurations imply other options. |
199 | case "$host_os" in | |
200 | gnu* | linux* | bsd4.4* | netbsd* | freebsd*) | |
201 | # These systems always use GNU tools. | |
c8cf0b14 | 202 | gnu_ld=yes gnu_as=yes ;; |
a2fe9c76 RM |
203 | esac |
204 | case "$host_os" in | |
7799b7b3 UD |
205 | # i586-linuxaout is mangled into i586-pc-linux-gnuaout |
206 | linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*) | |
3776d592 | 207 | ;; |
ba909880 | 208 | gnu* | linux* | sysv4* | solaris2* | irix6*) |
3776d592 RM |
209 | # These systems (almost) always use the ELF format. |
210 | elf=yes | |
84724245 | 211 | ;; |
a2fe9c76 RM |
212 | esac |
213 | ||
28f540f4 RM |
214 | machine=$config_machine |
215 | vendor=$config_vendor | |
216 | os=$config_os | |
217 | ||
bdc8eb03 UD |
218 | ### |
219 | ### I put this here to prevent those annoying emails from people who cannot | |
220 | ### read and try to compile glibc on unsupported platforms. --drepper | |
221 | ### | |
222 | ### By using the undocumented --enable-hacker-mode option for configure | |
223 | ### one can skip this test to make the configuration not fail for unsupported | |
224 | ### platforms. | |
225 | ### | |
226 | if test -z "$enable_hacker_mode"; then | |
227 | case "$machine-$host_os" in | |
228 | *-linux* | *-gnu* | arm*-none*) | |
229 | ;; | |
230 | *) | |
231 | echo "*** The GNU C library is currently not available for this platform." | |
232 | echo "*** So far nobody cared to port it and if there is no volunteer it" | |
233 | echo "*** might never happen. So, if you have interest to see glibc on" | |
234 | echo "*** this platform visit" | |
235 | echo "*** http://www.gnu.org/software/libc/porting.html" | |
236 | echo "*** and join the group of porters" | |
237 | exit 1 | |
238 | ;; | |
239 | esac | |
240 | fi | |
241 | ||
28f540f4 RM |
242 | dnl We need to use [ and ] for other purposes for a while now. |
243 | changequote(,)dnl | |
244 | # Expand the configuration machine name into a subdirectory by architecture | |
245 | # type and particular chip. | |
246 | case "$machine" in | |
f0523145 RM |
247 | a29k | am29000) base_machine=a29k machine=a29k ;; |
248 | alpha*) base_machine=alpha machine=alpha/$machine ;; | |
7799b7b3 | 249 | arm*) base_machine=arm machine=arm/$machine ;; |
60c96635 UD |
250 | c3[012]) base_machine=cx0 machine=cx0/c30 ;; |
251 | c4[04]) base_machine=cx0 machine=cx0/c40 ;; | |
f0523145 | 252 | hppa*) base_machine=hppa machine=hppa/$machine ;; |
a8922de8 | 253 | i[3456]86) base_machine=i386 machine=i386/$machine ;; |
f0523145 RM |
254 | m680?0) base_machine=m68k machine=m68k/$machine ;; |
255 | m68k) base_machine=m68k machine=m68k/m68020 ;; | |
256 | m88???) base_machine=m88k machine=m88k/$machine ;; | |
257 | m88k) base_machine=m88k machine=m88k/m88100 ;; | |
f0523145 | 258 | mips64*) base_machine=mips64 machine=mips/mips64/$machine ;; |
9a97d1f7 UD |
259 | mips*) base_machine=mips |
260 | case "`uname -m`" in | |
261 | IP22) machine=mips/mips3 ;; | |
45b3d8ad | 262 | *) machine=mips/$machine ;; |
9a97d1f7 | 263 | esac ;; |
ca34d7a7 UD |
264 | sparc | sparcv[67]) |
265 | base_machine=sparc machine=sparc/sparc32 ;; | |
266 | sparcv8 | supersparc | hypersparc) | |
267 | base_machine=sparc machine=sparc/sparc32/sparcv8 ;; | |
ae6b8730 RH |
268 | sparcv8plus | sparcv8plusa | sparcv9) |
269 | base_machine=sparc machine=sparc/sparc32/sparcv9 ;; | |
ca34d7a7 UD |
270 | sparc64 | ultrasparc) |
271 | base_machine=sparc machine=sparc/sparc64 ;; | |
28f540f4 | 272 | esac |
f0523145 RM |
273 | changequote([,])dnl |
274 | AC_SUBST(base_machine) | |
28f540f4 | 275 | |
dfd2257a UD |
276 | if test "$base_machine" = "i386"; then |
277 | AC_DEFINE(USE_REGPARMS) | |
278 | fi | |
279 | ||
f0523145 | 280 | # Compute the list of sysdep directories for this configuration. |
f332db02 | 281 | # This can take a while to compute. |
f0523145 | 282 | sysdep_dir=$srcdir/sysdeps |
f332db02 | 283 | AC_MSG_CHECKING(sysdep dirs) |
f0523145 RM |
284 | dnl We need to use [ and ] for other purposes for a while now. |
285 | changequote(,)dnl | |
28f540f4 RM |
286 | # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1. |
287 | os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`" | |
288 | ||
289 | case "$os" in | |
290 | gnu*) | |
291 | base_os=mach/hurd ;; | |
883bc19b | 292 | netbsd* | 386bsd* | freebsd* | bsdi*) |
28f540f4 | 293 | base_os=unix/bsd/bsd4.4 ;; |
222c4e71 | 294 | osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*) |
28f540f4 | 295 | base_os=unix/bsd ;; |
d586354e | 296 | sysv* | isc* | esix* | sco* | minix* | irix4* | linux*) |
28f540f4 | 297 | base_os=unix/sysv ;; |
f802accb UD |
298 | irix6*) |
299 | base_os=unix/sysv/irix6/$os ;; | |
d586354e | 300 | solaris[2-9]*) |
28f540f4 | 301 | base_os=unix/sysv/sysv4 ;; |
908c3d5b UD |
302 | hpux*) |
303 | base_os=unix/sysv/hpux/$os ;; | |
28f540f4 RM |
304 | none) |
305 | base_os=standalone ;; | |
306 | *) | |
307 | base_os='' ;; | |
308 | esac | |
309 | ||
310 | # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos. | |
311 | tail=$os | |
312 | ostry=$os | |
313 | while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do | |
314 | ostry="$ostry /$o" | |
315 | tail=$o | |
75914335 | 316 | done |
28f540f4 RM |
317 | o=`echo $tail | sed 's/[0-9]*$//'` |
318 | if test $o != $tail; then | |
319 | ostry="$ostry /$o" | |
320 | fi | |
ec4b0518 UD |
321 | # For linux-gnu, try linux-gnu, then linux. |
322 | o=`echo $tail | sed 's/-.*$//'` | |
323 | if test $o != $tail; then | |
324 | ostry="$ostry /$o" | |
325 | fi | |
28f540f4 RM |
326 | |
327 | # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix. | |
328 | base= | |
329 | tail=$base_os | |
330 | while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do | |
331 | set $b | |
332 | base="$base /$1" | |
333 | tail="$2" | |
334 | done | |
335 | ||
ae6b8730 | 336 | # For sparc/sparc32, try sparc/sparc32 and then sparc. |
28f540f4 RM |
337 | mach= |
338 | tail=$machine | |
339 | while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do | |
340 | set $m | |
10ceac89 RM |
341 | # Prepend the machine's FPU directory unless --without-fp. |
342 | if test "$with_fp" = yes; then | |
343 | mach="$mach /$1/fpu" | |
82d00cab | 344 | fi |
28f540f4 RM |
345 | mach="$mach /$1" |
346 | tail="$2" | |
347 | done | |
348 | ||
349 | dnl We are done with glob and regexp uses of [ and ]; return to autoconf. | |
350 | changequote([,])dnl | |
351 | ||
352 | # Find what sysdep directories exist. | |
353 | sysnames= | |
57ba7bb4 UD |
354 | IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:" |
355 | for d in $add_ons_pfx ''; do | |
356 | for b in $base ''; do | |
357 | for m0 in $mach ''; do | |
358 | for v in /$vendor ''; do | |
ae828bc6 | 359 | test "$v" = / && continue |
57ba7bb4 | 360 | for o in /$ostry ''; do |
ae828bc6 | 361 | test "$o" = / && continue |
57ba7bb4 UD |
362 | for m in $mach ''; do |
363 | if test "$m0$b$v$o$m"; then | |
364 | try="${d}sysdeps$m0$b$v$o$m" | |
365 | test -n "$enable_debug_configure" && | |
366 | echo "$0 [DEBUG]: try $try" >&2 | |
9c4c0024 | 367 | if test -d $srcdir/$try; then |
57ba7bb4 UD |
368 | sysnames="$sysnames $try" |
369 | { test -n "$o" || test -n "$b"; } && os_used=t | |
370 | { test -n "$m" || test -n "$m0"; } && machine_used=t | |
371 | fi | |
372 | fi | |
373 | done | |
28f540f4 RM |
374 | done |
375 | done | |
376 | done | |
377 | done | |
378 | done | |
57ba7bb4 | 379 | IFS="$ac_save_ifs" |
28f540f4 RM |
380 | |
381 | if test -z "$os_used" && test "$os" != none; then | |
382 | AC_MSG_ERROR(Operating system $os is not supported.) | |
383 | fi | |
384 | if test -z "$machine_used" && test "$machine" != none; then | |
385 | AC_MSG_ERROR(The $machine is not supported.) | |
386 | fi | |
387 | ||
388 | # We have now validated the configuration. | |
389 | ||
335aa320 | 390 | |
10ceac89 RM |
391 | # If using ELF, look for an `elf' subdirectory of each machine directory. |
392 | # We prepend these rather than inserting them whereever the machine appears | |
393 | # because things specified by the machine's ELF ABI should override | |
394 | # OS-specific things, and should always be the same for any OS on the | |
395 | # machine (otherwise what's the point of an ABI?). | |
396 | if test "$elf" = yes; then | |
397 | elf_dirs= | |
57ba7bb4 | 398 | for d in $add_ons_pfx ''; do |
57ba7bb4 | 399 | for m in $mach; do |
9c4c0024 | 400 | if test -d $srcdir/${d}sysdeps$m/elf; then |
c2bb8cab | 401 | elf_dirs="$elf_dirs ${d}sysdeps$m/elf" |
57ba7bb4 UD |
402 | fi |
403 | done | |
28f540f4 | 404 | done |
57ba7bb4 | 405 | sysnames="`echo $elf_dirs | sed -e 's,//,/,g'` $sysnames" |
28f540f4 RM |
406 | fi |
407 | ||
335aa320 | 408 | |
28f540f4 RM |
409 | # Expand the list of system names into a full list of directories |
410 | # from each element's parent name and Implies file (if present). | |
411 | set $sysnames | |
e50ec9f9 | 412 | names= |
28f540f4 RM |
413 | while test $# -gt 0; do |
414 | name=$1 | |
415 | shift | |
416 | ||
e50ec9f9 | 417 | case " $names " in *" $name "*) |
f332db02 RM |
418 | # Already in the list. |
419 | continue | |
e50ec9f9 | 420 | esac |
f332db02 RM |
421 | |
422 | # Report each name as we discover it, so there is no long pause in output. | |
423 | echo $ac_n "$name $ac_c" >&AC_FD_MSG | |
424 | ||
57ba7bb4 UD |
425 | name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'` |
426 | ||
427 | case $name in | |
428 | /*) xsrcdir= ;; | |
429 | *) xsrcdir=$srcdir/ ;; | |
430 | esac | |
431 | test -n "$enable_debug_configure" && | |
432 | echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2 | |
433 | ||
434 | if test -f $xsrcdir$name/Implies; then | |
28f540f4 | 435 | # Collect more names from the `Implies' file (removing comments). |
57ba7bb4 UD |
436 | implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/Implies`" |
437 | implied= | |
438 | for x in $implied_candidate; do | |
439 | if test -d $xsrcdir$name_base/$x; then | |
440 | implied="$implied $name_base/$x"; | |
441 | else | |
442 | AC_MSG_WARN($name/Implies specifies nonexistent $x) | |
443 | fi | |
28f540f4 RM |
444 | done |
445 | else | |
446 | implied= | |
447 | fi | |
448 | ||
449 | # Add NAME to the list of names. | |
450 | names="$names $name" | |
451 | ||
452 | # Find the parent of NAME, using the empty string if it has none. | |
453 | changequote(,)dnl | |
57ba7bb4 | 454 | parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`" |
28f540f4 RM |
455 | changequote([,])dnl |
456 | ||
457 | # Add the names implied by NAME, and NAME's parent (if it has one), to | |
458 | # the list of names to be processed (the argument list). We prepend the | |
459 | # implied names to the list and append the parent. We want implied | |
460 | # directories to come before further directories inferred from the | |
461 | # configuration components; this ensures that for sysv4, unix/common | |
462 | # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*) | |
463 | # after sysv4). | |
464 | sysnames="`echo $implied $* $parent`" | |
465 | test -n "$sysnames" && set $sysnames | |
466 | done | |
467 | ||
468 | # Add the default directories. | |
ecdc196c | 469 | default_sysnames=sysdeps/generic |
2de7874e | 470 | if test "$elf" = yes; then |
ecdc196c | 471 | default_sysnames="sysdeps/generic/elf $default_sysnames" |
2de7874e | 472 | fi |
ecdc196c | 473 | sysnames="$names $default_sysnames" |
f332db02 RM |
474 | AC_SUBST(sysnames) |
475 | # The other names were emitted during the scan. | |
ecdc196c | 476 | AC_MSG_RESULT($default_sysnames) |
28f540f4 | 477 | |
f332db02 RM |
478 | |
479 | ### Locate tools. | |
28f540f4 | 480 | |
28f540f4 | 481 | AC_PROG_INSTALL |
2b80a372 | 482 | if test "$INSTALL" = "${srcdir}/scripts/install-sh -c"; then |
28f540f4 | 483 | # The makefiles need to use a different form to find it in $srcdir. |
2b80a372 | 484 | INSTALL='\$(..)./scripts/install-sh -c' |
28f540f4 | 485 | fi |
0e3426bb | 486 | AC_PROG_LN_S |
ae828bc6 | 487 | |
63bda0c1 | 488 | # These programs are version sensitive. |
4bca4c17 UD |
489 | AC_REQUIRE([AC_CHECK_TOOL_PREFIX])dnl |
490 | AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v, | |
98393660 | 491 | [version \([egcygnustp-]*[0-9.]*\)], |
464e3605 | 492 | [egcs-2.9[1-9].*|egcs-2.90.2[789]|egcs-2.90.[3-9][0-9]|*gcc-2.9[1-9].*|pgcc-2.90.2[789]|pgcc-2.90.[3-9][0-9]|*2.8.[1-9]*|*2.9|*2.9.[0-9]*|2.9[5-9]*|cygnus-2.9[1-9].*|gcc-2.9[5-9]|gcc-2.1[0-9][0-9]], |
4bca4c17 | 493 | critic_missing=t) |
22e65f8f | 494 | AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version, |
8fc1e2ca | 495 | [GNU Make[^0-9]*\([0-9][0-9.]*\)], |
6598ac30 | 496 | [3.75 | 3.76.[1-9]* | 3.7[789]* | 3.[89]*], critic_missing=t) |
63bda0c1 | 497 | |
22e65f8f | 498 | AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version, |
bdd421cc UD |
499 | [GNU gettext.* \([0-9]*\.[0-9.]*\)], |
500 | [0.[1-9][0-9].* | [1-9].*], MSGFMT=: aux_missing=t) | |
63bda0c1 | 501 | AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, |
8b7fb588 | 502 | [GNU texinfo.* \([0-9][0-9.]*\)], |
c159de62 | 503 | [3.1[1-9] | 3.[2-9][0-9] | 4.* | 1.6[89] | 1.7[0-9]], MAKEINFO=: aux_missing=t) |
63bda0c1 | 504 | |
4bca4c17 UD |
505 | if test -n "$critic_missing"; then |
506 | AC_MSG_ERROR([ | |
63bda0c1 UD |
507 | *** Some critical program is missing or too old. |
508 | *** Check the INSTALL file for required versions.]) | |
4bca4c17 | 509 | fi |
63bda0c1 | 510 | |
4bca4c17 | 511 | test -n "$aux_missing" && AC_MSG_WARN([ |
63bda0c1 UD |
512 | *** An auxiliary program is missing or too old; |
513 | *** some features will be disabled. | |
514 | *** Check the INSTALL file for required versions.]) | |
28f540f4 | 515 | |
d01d6319 UD |
516 | # glibcbug.in wants to know the compiler version. |
517 | CCVERSION=`$CC -v 2>&1 | sed -n 's/gcc version //p'` | |
518 | AC_SUBST(CCVERSION) | |
519 | ||
ebbad4cc | 520 | AC_PROG_CC_LOCAL |
22d57dd3 | 521 | AC_CANONICAL_BUILD |
072ebcef | 522 | if test $host != $build; then |
22d57dd3 | 523 | AC_CHECK_PROGS(BUILD_CC, gcc cc) |
072ebcef | 524 | fi |
779ae82e | 525 | AC_SUBST(cross_compiling) |
7c713e28 | 526 | AC_PROG_CPP |
650425ce | 527 | LIBC_PROG_BINUTILS |
4bca4c17 | 528 | AC_CHECK_TOOL(MIG, mig) |
28f540f4 | 529 | |
dbe7a0f5 UD |
530 | # if using special system headers, find out the compiler's sekrit |
531 | # header directory and add that to the list. NOTE: Only does the right | |
532 | # thing on a system that doesn't need fixincludes. (Not presently a problem.) | |
533 | if test -n "$sysheaders"; then | |
534 | ccheaders=`$CC -print-file-name=include` | |
535 | SYSINCLUDES="-nostdinc -isystem $ccheaders -isystem $sysheaders" | |
536 | fi | |
537 | AC_SUBST(SYSINCLUDES) | |
538 | ||
97a47867 UD |
539 | # check if ranlib is necessary |
540 | AC_CACHE_CHECK(whether ranlib is necessary, libc_cv_ranlib_necessary, [dnl | |
541 | cat > conftest.c <<EOF | |
542 | int a; | |
543 | char b; | |
544 | void c(void) {} | |
545 | EOF | |
546 | $CC $CFLAGS -c conftest.c | |
547 | $AR cr conftest.a conftest.c | |
548 | cp conftest.a conftest2.a | |
549 | $RANLIB conftest.a | |
550 | if cmp -s conftest.a conftest2.a; then | |
551 | libc_cv_ranlib_necessary=no | |
f38931a9 | 552 | else |
97a47867 UD |
553 | libc_cv_ranlib_necessary=yes |
554 | fi | |
555 | rm -rf conftest*]) | |
556 | if test "$libc_cv_ranlib_necessary" = no; then | |
557 | RANLIB=: | |
f38931a9 | 558 | fi |
f38931a9 | 559 | |
3911660e UD |
560 | # Test if LD_LIBRARY_PATH contains the notation for the current directory |
561 | # since this would lead to problems installing/building glibc. | |
562 | # LD_LIBRARY_PATH contains the current directory if one of the following | |
563 | # is true: | |
564 | # - one of the terminals (":" and ";") is the first or last sign | |
565 | # - two terminals occur directly after each other | |
566 | # - the path contains an element with a dot in it | |
567 | AC_MSG_CHECKING(LD_LIBRARY_PATH variable) | |
568 | changequote(,)dnl | |
569 | case ${LD_LIBRARY_PATH} in | |
570 | [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) | |
b3a86ae1 | 571 | ld_library_path_setting="contains current directory" |
3911660e UD |
572 | ;; |
573 | *) | |
574 | ld_library_path_setting="ok" | |
575 | ;; | |
576 | esac | |
577 | changequote([,])dnl | |
578 | AC_MSG_RESULT($ld_library_path_setting) | |
579 | if test "$ld_library_path_setting" != "ok"; then | |
63bda0c1 UD |
580 | AC_MSG_ERROR([ |
581 | *** LD_LIBRARY_PATH shouldn't contain the current directory when | |
582 | *** building glibc. Please change the environment variable | |
583 | *** and run configure again.]) | |
3911660e | 584 | fi |
8e31cf7e | 585 | |
84384f5b | 586 | AC_PATH_PROG(BASH, bash, no) |
a18f587d | 587 | if test "$BASH" != no && |
f43ce637 | 588 | $BASH -c 'test "$BASH_VERSINFO" \ |
6973fc01 | 589 | && test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then |
84384f5b UD |
590 | libc_cv_have_bash2=yes |
591 | else | |
592 | libc_cv_have_bash2=no | |
593 | fi | |
594 | AC_SUBST(libc_cv_have_bash2) | |
595 | ||
5290baf0 UD |
596 | dnl We need a ksh compatible shell for tzselect. |
597 | if test "$BASH" = no; then | |
598 | AC_PATH_PROG(KSH, ksh, no) | |
599 | if test "$KSH" = no; then | |
600 | libc_cv_have_ksh=no | |
601 | else | |
602 | libc_cv_have_ksh=yes | |
603 | fi | |
604 | else | |
605 | KSH="$BASH" | |
606 | AC_SUBST(KSH) | |
607 | libc_cv_have_ksh=yes | |
608 | fi | |
609 | AC_SUBST(libc_cv_have_ksh) | |
610 | ||
5aa8ff62 | 611 | AC_PROG_AWK |
c0016081 | 612 | AC_PATH_PROG(PERL, perl, no) |
a2b08ee5 | 613 | AC_SUBST(PERL) |
2f512715 AS |
614 | AC_PATH_PROG(INSTALL_INFO, install-info, no, |
615 | $PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin) | |
c0016081 UD |
616 | AC_SUBST(INSTALL_INFO) |
617 | if test "$INSTALL_INFO" != "no"; then | |
618 | AC_CACHE_CHECK(for old Debian install-info, libc_cv_old_debian_install_info, | |
619 | [mkdir conftest.d | |
620 | # There is a hard ^_ on the next line. I am open to better ideas. | |
621 | (echo '\1f' | |
622 | echo 'File: dir Node: Top This is the top of the INFO tree' | |
623 | echo '* Menu:') >conftest.d/dir | |
624 | (echo 'INFO-DIR-SECTION i-d-s works' | |
625 | echo 'START-INFO-DIR-ENTRY' | |
626 | echo '* Prog: (prog). Program.' | |
627 | echo 'END-INFO-DIR-ENTRY') >conftest.d/prog.info | |
628 | if $INSTALL_INFO --info-dir=conftest.d conftest.d/prog.info >&AC_FD_CC 2>&1 | |
d8cceb4f | 629 | then |
c0016081 UD |
630 | if grep -s 'i-d-s works' conftest.d/dir >/dev/null |
631 | then libc_cv_old_debian_install_info=no | |
632 | else libc_cv_old_debian_install_info=yes | |
633 | fi | |
634 | else libc_cv_old_debian_install_info=no testfailed=t | |
635 | fi | |
636 | rm -fr conftest.d]) | |
637 | if test -n "$testfailed" | |
638 | then AC_MSG_WARN([install-info errored out, check config.log]) | |
639 | fi | |
640 | OLD_DEBIAN_INSTALL_INFO=$libc_cv_old_debian_install_info | |
641 | fi | |
642 | AC_SUBST(OLD_DEBIAN_INSTALL_INFO) | |
a2b08ee5 | 643 | |
b8dc6a10 | 644 | AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl |
28f540f4 RM |
645 | echo '#include <stddef.h> |
646 | FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c | |
647 | if eval "$ac_cpp conftest.c 2>/dev/null" \ | |
648 | | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then | |
649 | libc_cv_signed_size_t=no | |
650 | else | |
651 | libc_cv_signed_size_t=yes | |
652 | fi | |
653 | rm -f conftest*]) | |
28f540f4 RM |
654 | if test $libc_cv_signed_size_t = yes; then |
655 | dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings. | |
656 | cat >> confdefs.h <<\EOF | |
657 | #undef __SIZE_TYPE__ | |
658 | #define __SIZE_TYPE__ unsigned | |
659 | EOF | |
660 | fi | |
661 | ||
b8dc6a10 | 662 | AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl |
28f540f4 RM |
663 | AC_TRY_COMPILE(dnl |
664 | [#define __need_size_t | |
665 | #define __need_wchar_t | |
666 | #include <stddef.h> | |
667 | #define __need_NULL | |
668 | #include <stddef.h>], [size_t size; wchar_t wchar; | |
669 | #ifdef offsetof | |
670 | #error stddef.h ignored __need_* | |
671 | #endif | |
672 | if (&size == NULL || &wchar == NULL) abort ();], | |
673 | libc_cv_friendly_stddef=yes, | |
674 | libc_cv_friendly_stddef=no)]) | |
28f540f4 RM |
675 | if test $libc_cv_friendly_stddef = yes; then |
676 | config_vars="$config_vars | |
677 | override stddef.h = # The installed <stddef.h> seems to be libc-friendly." | |
678 | fi | |
679 | ||
b8dc6a10 RM |
680 | AC_CACHE_CHECK(whether we need to use -P to assemble .S files, |
681 | libc_cv_need_minus_P, [dnl | |
28f540f4 RM |
682 | cat > conftest.S <<EOF |
683 | #include "confdefs.h" | |
684 | /* Nothing whatsoever. */ | |
685 | EOF | |
686 | if ${CC-cc} $CFLAGS -c conftest.S 2>/dev/null; then | |
687 | libc_cv_need_minus_P=no | |
688 | else | |
689 | libc_cv_need_minus_P=yes | |
690 | fi | |
691 | rm -f conftest*]) | |
28f540f4 RM |
692 | if test $libc_cv_need_minus_P = yes; then |
693 | config_vars="$config_vars | |
694 | asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives." | |
695 | fi | |
696 | ||
b8dc6a10 RM |
697 | AC_CACHE_CHECK(for assembler global-symbol directive, |
698 | libc_cv_asm_global_directive, [dnl | |
9a70fcab | 699 | libc_cv_asm_global_directive=UNKNOWN |
908c3d5b | 700 | for ac_globl in .globl .global .EXPORT; do |
9a70fcab | 701 | cat > conftest.s <<EOF |
050838a4 | 702 | .text |
908c3d5b | 703 | ${ac_globl} foo |
ae1025be | 704 | foo: |
9a70fcab UD |
705 | EOF |
706 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then | |
707 | libc_cv_asm_global_directive=${ac_globl} | |
708 | fi | |
709 | rm -f conftest* | |
710 | test $libc_cv_asm_global_directive != UNKNOWN && break | |
711 | done]) | |
9a70fcab UD |
712 | if test $libc_cv_asm_global_directive = UNKNOWN; then |
713 | AC_MSG_ERROR(cannot determine asm global directive) | |
714 | else | |
715 | AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive}) | |
716 | fi | |
717 | ||
b8dc6a10 | 718 | AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl |
9a70fcab | 719 | cat > conftest.s <<EOF |
e215c478 | 720 | .text |
ae1025be | 721 | foo: |
df2a0c93 | 722 | .set glibc_conftest_frobozz,foo |
9a70fcab | 723 | $libc_cv_asm_global_directive glibc_conftest_frobozz |
e215c478 | 724 | EOF |
df2a0c93 RM |
725 | # The alpha-dec-osf1 assembler gives only a warning for `.set' |
726 | # (but it doesn't work), so we must do a linking check to be sure. | |
727 | cat > conftest1.c <<\EOF | |
728 | extern int glibc_conftest_frobozz; | |
729 | main () { printf ("%d\n", glibc_conftest_frobozz); } | |
730 | EOF | |
731 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
cb2f05ed | 732 | -o conftest conftest.s conftest1.c 1>&AC_FD_CC 2>&AC_FD_CC; then |
e215c478 RM |
733 | libc_cv_asm_set_directive=yes |
734 | else | |
735 | libc_cv_asm_set_directive=no | |
736 | fi | |
65b3cbcb | 737 | rm -f conftest*]) |
e215c478 RM |
738 | if test $libc_cv_asm_set_directive = yes; then |
739 | AC_DEFINE(HAVE_ASM_SET_DIRECTIVE) | |
740 | fi | |
741 | ||
377a515b UD |
742 | AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive, |
743 | [cat > conftest.s <<EOF | |
744 | .text | |
4cca6b86 | 745 | _sym: |
377a515b UD |
746 | .symver _sym,sym@VERS |
747 | EOF | |
748 | if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then | |
749 | libc_cv_asm_symver_directive=yes | |
750 | else | |
751 | libc_cv_asm_symver_directive=no | |
752 | fi | |
753 | rm -f conftest*]) | |
754 | AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl | |
755 | if test $libc_cv_asm_symver_directive = yes; then | |
756 | cat > conftest.s <<EOF | |
757 | .text | |
4cca6b86 | 758 | _sym: |
377a515b UD |
759 | .symver _sym,sym@VERS |
760 | EOF | |
761 | cat > conftest.map <<EOF | |
f43ce637 | 762 | VERS_1 { |
377a515b UD |
763 | global: sym; |
764 | }; | |
f43ce637 UD |
765 | |
766 | VERS_2 { | |
767 | global: sym; | |
768 | } VERS_1; | |
377a515b UD |
769 | EOF |
770 | if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then | |
5ae3e846 UD |
771 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS -shared -o conftest.so conftest.o |
772 | -nostartfiles -nostdlib | |
ae1025be UD |
773 | -Wl,--version-script,conftest.map |
774 | 1>&AC_FD_CC]); | |
377a515b UD |
775 | then |
776 | libc_cv_ld_version_script_option=yes | |
777 | else | |
778 | libc_cv_ld_version_script_option=no | |
779 | fi | |
780 | else | |
781 | libc_cv_ld_version_script_option=no | |
782 | fi | |
783 | else | |
784 | libc_cv_ld_version_script_option=no | |
785 | fi | |
786 | rm -f conftest*]) | |
787 | if test $libc_cv_asm_symver_directive = yes && | |
650425ce UD |
788 | test $libc_cv_ld_version_script_option = yes && |
789 | test $enable_versioning = yes; then | |
377a515b UD |
790 | VERSIONING=yes |
791 | AC_DEFINE(DO_VERSIONING) | |
792 | else | |
793 | VERSIONING=no | |
794 | fi | |
795 | AC_SUBST(VERSIONING) | |
796 | ||
f43ce637 UD |
797 | if test $VERSIONING = no; then |
798 | echo "\ | |
f4017d20 | 799 | *** WARNING: You should not compile GNU libc without versioning. Not using |
f43ce637 UD |
800 | *** versioning will introduce incompatibilities so that old binaries |
801 | *** will not run anymore. | |
50304ef0 | 802 | *** For versioning you need recent binutils (binutils-2.8.1.0.23 or newer)." |
f43ce637 | 803 | fi |
fd26970f UD |
804 | if test $elf = yes; then |
805 | AC_CACHE_CHECK(for .previous assembler directive, | |
806 | libc_cv_asm_previous_directive, [dnl | |
807 | cat > conftest.s <<EOF | |
808 | .section foo_section | |
809 | .previous | |
810 | EOF | |
811 | if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then | |
812 | libc_cv_asm_previous_directive=yes | |
813 | else | |
814 | libc_cv_asm_previous_directive=no | |
815 | fi | |
816 | rm -f conftest*]) | |
817 | if test $libc_cv_asm_previous_directive = yes; then | |
818 | AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE) | |
819 | else | |
820 | AC_CACHE_CHECK(for .popsection assembler directive, | |
821 | libc_cv_asm_popsection_directive, [dnl | |
822 | cat > conftest.s <<EOF | |
823 | .pushsection foo_section | |
824 | .popsection | |
825 | EOF | |
826 | if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then | |
827 | libc_cv_asm_popsection_directive=yes | |
828 | else | |
829 | libc_cv_asm_popsection_directive=no | |
830 | fi | |
831 | rm -f conftest*]) | |
832 | if test $libc_cv_asm_popsection_directive = yes; then | |
833 | AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE) | |
834 | fi | |
835 | fi | |
836 | fi | |
837 | ||
b8dc6a10 RM |
838 | if test $elf != yes; then |
839 | AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini, | |
840 | [AC_TRY_COMPILE(, [asm (".section .init"); | |
84724245 RM |
841 | asm (".section .fini"); |
842 | asm (".text");], | |
b8dc6a10 RM |
843 | libc_cv_have_initfini=yes, |
844 | libc_cv_have_initfini=no)]) | |
845 | AC_SUBST(libc_cv_have_initfini)dnl | |
846 | if test $libc_cv_have_initfini = yes; then | |
847 | AC_DEFINE(HAVE_INITFINI) | |
848 | fi | |
849 | fi | |
e215c478 | 850 | |
9a0a462c UD |
851 | dnl AC_CHECK_ASM_UNDERSCORE([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]) |
852 | AC_DEFUN(AC_CHECK_ASM_UNDERSCORE, | |
853 | [cat > conftest.$ac_ext <<EOF | |
854 | dnl This sometimes fails to find confdefs.h, for some reason. | |
855 | dnl [#]line __oline__ "[$]0" | |
856 | [#]line __oline__ "configure" | |
857 | #include "confdefs.h" | |
858 | void underscore_test(void) { | |
859 | return; } | |
860 | EOF | |
861 | if AC_TRY_EVAL(ac_compile); then | |
862 | if grep _underscore_test conftest* >/dev/null; then | |
863 | ifelse([$1], , :, [rm -f conftest* | |
864 | $1]) | |
865 | else | |
866 | ifelse([$2], , , [rm -f conftest* | |
867 | $2]) | |
868 | fi | |
869 | else | |
870 | echo "configure: failed program was:" >&AC_FD_CC | |
871 | cat conftest.$ac_ext >&AC_FD_CC | |
872 | ifelse([$2], , , [rm -f conftest* | |
873 | $2]) | |
874 | fi | |
875 | rm -f conftest*]) | |
876 | ||
c224a18a RM |
877 | if test $elf = yes; then |
878 | libc_cv_asm_underscores=no | |
879 | else | |
9a0a462c UD |
880 | if test $ac_cv_prog_cc_works = yes; then |
881 | AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores, | |
882 | [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();], | |
883 | libc_cv_asm_underscores=yes, | |
884 | libc_cv_asm_underscores=no)]) | |
885 | else | |
886 | AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores, | |
887 | [AC_CHECK_ASM_UNDERSCORE(libc_cv_asm_underscores=yes, | |
888 | libc_cv_asm_underscores=no)]) | |
889 | fi | |
c224a18a RM |
890 | fi |
891 | if test $libc_cv_asm_underscores = no; then | |
892 | AC_DEFINE(NO_UNDERSCORES) | |
893 | fi | |
894 | ||
895 | if test $elf = yes; then | |
896 | libc_cv_weak_symbols=yes | |
9a97d1f7 UD |
897 | fi |
898 | ||
899 | AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive, | |
c224a18a RM |
900 | [dnl |
901 | cat > conftest.s <<EOF | |
902 | .text | |
903 | ${libc_cv_asm_global_directive} foo | |
ae1025be | 904 | foo: |
c224a18a RM |
905 | .weak foo |
906 | .weak bar; bar = foo | |
907 | EOF | |
9a97d1f7 UD |
908 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then |
909 | libc_cv_asm_weak_directive=yes | |
910 | else | |
911 | libc_cv_asm_weak_directive=no | |
912 | fi | |
913 | rm -f conftest*]) | |
c224a18a | 914 | |
c8cf0b14 | 915 | if test $libc_cv_asm_weak_directive = no; then |
c224a18a RM |
916 | AC_CACHE_CHECK(for assembler .weakext directive, |
917 | libc_cv_asm_weakext_directive, | |
918 | [dnl | |
919 | cat > conftest.s <<EOF | |
920 | .text | |
921 | ${libc_cv_asm_global_directive} foo | |
ae1025be | 922 | foo: |
f802accb UD |
923 | .weakext bar foo |
924 | .weakext baz | |
925 | ${libc_cv_asm_global_directive} baz | |
9a97d1f7 | 926 | baz: |
c224a18a RM |
927 | EOF |
928 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then | |
929 | libc_cv_asm_weakext_directive=yes | |
930 | else | |
931 | libc_cv_asm_weakext_directive=no | |
932 | fi | |
933 | rm -f conftest*]) | |
934 | ||
9a97d1f7 | 935 | fi # no .weak |
c224a18a | 936 | |
ffcf9634 | 937 | if test $libc_cv_asm_weak_directive = yes; then |
c224a18a | 938 | AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE) |
ffcf9634 | 939 | elif test $libc_cv_asm_weakext_directive = yes; then |
c224a18a RM |
940 | AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE) |
941 | fi | |
942 | ||
a641835a RM |
943 | AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl |
944 | cat > conftest.c <<\EOF | |
5f0e6fc7 | 945 | _start () {} |
dcf0671d UD |
946 | int __eh_pc; |
947 | __throw () {} | |
a641835a | 948 | EOF |
dcea62dd RM |
949 | dnl No \ in command here because it ends up inside ''. |
950 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS | |
951 | -nostdlib -nostartfiles -Wl,--no-whole-archive | |
ae1025be | 952 | -o conftest conftest.c 1>&AC_FD_CC]); then |
a641835a RM |
953 | libc_cv_ld_no_whole_archive=yes |
954 | else | |
955 | libc_cv_ld_no_whole_archive=no | |
956 | fi | |
957 | rm -f conftest*]) | |
b17277cf UD |
958 | if test $libc_cv_ld_no_whole_archive = yes; then |
959 | no_whole_archive=-Wl,--no-whole-archive | |
960 | fi | |
961 | AC_SUBST(no_whole_archive)dnl | |
a641835a | 962 | |
dff14448 | 963 | AC_CACHE_CHECK(for gcc -fexceptions, libc_cv_gcc_exceptions, [dnl |
b236e99d UD |
964 | cat > conftest.c <<\EOF |
965 | _start () {} | |
966 | int __eh_pc; | |
967 | __throw () {} | |
968 | EOF | |
969 | dnl No \ in command here because it ends up inside ''. | |
970 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS | |
dff14448 | 971 | -nostdlib -nostartfiles -fexceptions |
ae1025be | 972 | -o conftest conftest.c 1>&AC_FD_CC]); then |
dff14448 | 973 | libc_cv_gcc_exceptions=yes |
b236e99d | 974 | else |
dff14448 | 975 | libc_cv_gcc_exceptions=no |
b236e99d UD |
976 | fi |
977 | rm -f conftest*]) | |
dff14448 UD |
978 | if test $libc_cv_gcc_exceptions = yes; then |
979 | exceptions=-fexceptions | |
b17277cf | 980 | fi |
dff14448 | 981 | AC_SUBST(exceptions)dnl |
b236e99d | 982 | |
d71b808a UD |
983 | if test "$base_machine" = alpha ; then |
984 | AC_CACHE_CHECK(for function ..ng prefix, libc_cv_gcc_alpha_ng_prefix, [dnl | |
985 | cat > conftest.c <<\EOF | |
986 | foo () { } | |
987 | EOF | |
988 | dnl | |
9756dfe1 | 989 | if AC_TRY_COMMAND([${CC-cc} -S conftest.c -o - | fgrep "\$foo..ng" > /dev/null]); |
d71b808a UD |
990 | then |
991 | libc_cv_gcc_alpha_ng_prefix=yes | |
992 | else | |
993 | libc_cv_gcc_alpha_ng_prefix=no | |
994 | fi | |
995 | rm -f conftest* ]) | |
996 | if test $libc_cv_gcc_alpha_ng_prefix = yes ; then | |
997 | AC_DEFINE(ASM_ALPHA_NG_SYMBOL_PREFIX, "$") | |
998 | else | |
999 | AC_DEFINE(ASM_ALPHA_NG_SYMBOL_PREFIX, "") | |
1000 | fi | |
1001 | fi | |
1002 | ||
66000494 UD |
1003 | if test "$host_cpu" = powerpc ; then |
1004 | # Check for a bug present in at least versions 2.8.x of GCC | |
1005 | # and versions 1.0.x of EGCS. | |
1006 | AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl | |
1007 | AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],, | |
1008 | libc_cv_c_asmcr0_bug='no', | |
1009 | libc_cv_c_asmcr0_bug='yes')]) | |
1010 | if test "$libc_cv_c_asmcr0_bug" != 'no'; then | |
1011 | AC_DEFINE(BROKEN_PPC_ASM_CR0) | |
1012 | fi | |
1013 | fi | |
1014 | ||
650425ce UD |
1015 | AC_CACHE_CHECK(for DWARF2 unwind info support, libc_cv_gcc_dwarf2_unwind_info, |
1016 | [cat > conftest.c <<EOF | |
1017 | #line __oline__ "configure" | |
1018 | static char __EH_FRAME_BEGIN__[]; | |
1019 | _start () | |
1020 | { | |
9756dfe1 | 1021 | #ifdef CHECK__register_frame |
650425ce UD |
1022 | __register_frame (__EH_FRAME_BEGIN__); |
1023 | __deregister_frame (__EH_FRAME_BEGIN__); | |
9756dfe1 UD |
1024 | #endif |
1025 | #ifdef CHECK__register_frame_info | |
1026 | __register_frame_info (__EH_FRAME_BEGIN__); | |
1027 | __deregister_frame_info (__EH_FRAME_BEGIN__); | |
1028 | #endif | |
650425ce UD |
1029 | } |
1030 | int __eh_pc; | |
1031 | __throw () {} | |
1032 | /* FIXME: this is fragile. */ | |
1033 | malloc () {} | |
1034 | strcmp () {} | |
1035 | strlen () {} | |
1036 | memcpy () {} | |
1037 | memset () {} | |
1038 | free () {} | |
1039 | abort () {} | |
dfd2257a | 1040 | __bzero () {} |
650425ce UD |
1041 | EOF |
1042 | dnl No \ in command here because it ends up inside ''. | |
9756dfe1 | 1043 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS -DCHECK__register_frame_info |
650425ce UD |
1044 | -nostdlib -nostartfiles |
1045 | -o conftest conftest.c -lgcc >&AC_FD_CC]); then | |
9756dfe1 | 1046 | libc_cv_gcc_dwarf2_unwind_info=static |
650425ce UD |
1047 | else |
1048 | libc_cv_gcc_dwarf2_unwind_info=no | |
1049 | fi | |
9756dfe1 UD |
1050 | if test $libc_cv_gcc_dwarf2_unwind_info = no; then |
1051 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS -DCHECK__register_frame | |
1052 | -nostdlib -nostartfiles | |
1053 | -o conftest conftest.c -lgcc >&AC_FD_CC]); then | |
1054 | libc_cv_gcc_dwarf2_unwind_info=yes | |
1055 | else | |
1056 | libc_cv_gcc_dwarf2_unwind_info=no | |
1057 | fi | |
1058 | fi | |
650425ce | 1059 | rm -f conftest*]) |
9756dfe1 UD |
1060 | case $libc_cv_gcc_dwarf2_unwind_info in |
1061 | yes) | |
650425ce | 1062 | AC_DEFINE(HAVE_DWARF2_UNWIND_INFO) |
9756dfe1 UD |
1063 | ;; |
1064 | static) | |
1065 | AC_DEFINE(HAVE_DWARF2_UNWIND_INFO) | |
1066 | AC_DEFINE(HAVE_DWARF2_UNWIND_INFO_STATIC) | |
1067 | ;; | |
1068 | esac | |
650425ce | 1069 | |
a8eab8b1 UD |
1070 | dnl Check whether compiler understands __builtin_expect. |
1071 | AC_CACHE_CHECK(for __builtin_expect, libc_cv_gcc_builtin_expect, | |
1072 | [cat > conftest.c <<EOF | |
1073 | #line __oline__ "configure" | |
1074 | int foo (int a) | |
1075 | { | |
1076 | a = __builtin_expect (a, 10); | |
1077 | return a == 10 ? 0 : 1; | |
1078 | } | |
1079 | EOF | |
1080 | dnl No \ in command here because it ends up inside ''. | |
1081 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS -nostdlib -nostartfiles | |
1082 | -o conftest conftest.c -lgcc >&AC_FD_CC]); then | |
1083 | libc_cv_gcc_builtin_expect=yes | |
1084 | else | |
1085 | libc_cv_gcc_builtin_expect=no | |
1086 | fi | |
1087 | rm -f conftest*]) | |
1088 | if test "$libc_cv_gcc_builtin_expect" = yes; then | |
1089 | AC_DEFINE(HAVE_BUILTIN_EXPECT) | |
1090 | fi | |
1091 | ||
3d558f4e UD |
1092 | dnl Check whether the compiler supports subtraction of local labels. |
1093 | AC_CACHE_CHECK(for local label subtraction, libc_cv_gcc_subtract_local_labels, | |
1094 | [cat > conftest.c <<EOF | |
1095 | changequote(,)dnl | |
1096 | #line __oline__ "configure" | |
1097 | int foo (int a) | |
1098 | { | |
1099 | static const int ar[] = { &&l1 - &&l1, &&l2 - &&l1 }; | |
1100 | void *p = &&l1 + ar[a]; | |
1101 | goto *p; | |
1102 | l1: | |
1103 | return 1; | |
1104 | l2: | |
1105 | return 2; | |
1106 | } | |
1107 | changequote([,])dnl | |
1108 | EOF | |
1109 | dnl No \ in command here because it ends up inside ''. | |
1110 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS -nostdlib -nostartfiles | |
1111 | -o conftest conftest.c -lgcc >&AC_FD_CC]); then | |
1112 | libc_cv_gcc_subtract_local_labels=yes | |
1113 | else | |
1114 | libc_cv_gcc_subtract_local_labels=no | |
1115 | fi | |
1116 | rm -f conftest*]) | |
1117 | if test "$libc_cv_gcc_subtract_local_labels" = yes; then | |
1118 | AC_DEFINE(HAVE_SUBTRACT_LOCAL_LABELS) | |
1119 | fi | |
1120 | ||
c8f3e6db UD |
1121 | dnl Check whether we have the gd library available. |
1122 | AC_MSG_CHECKING(for libgd) | |
1123 | old_CFLAGS="$CFLAGS" | |
1124 | CFLAGS="$CFLAGS $libgd_include" | |
1125 | old_LDFLAGS="$LDFLAGS" | |
1126 | LDFLAGS="$LDFLAGS $libgd_ldflags" | |
1127 | old_LIBS="$LIBS" | |
1128 | LIBS="$LIBS -lgd -lpng -lz" | |
1129 | AC_TRY_LINK([#include <gd.h>], [gdImagePng (0, 0)], LIBGD=yes, LIBGD=no) | |
1130 | CFLAGS="$old_CFLAGS" | |
1131 | LDFLAGS="$old_LDFLAGS" | |
1132 | LIBS="$old_LIBS" | |
1133 | AC_MSG_RESULT($LIBGD) | |
1134 | AC_SUBST(LIBGD) | |
3d558f4e | 1135 | |
c224a18a RM |
1136 | ### End of automated tests. |
1137 | ### Now run sysdeps configure fragments. | |
1138 | ||
28f540f4 RM |
1139 | # sysdeps configure fragments may set these with files to be linked below. |
1140 | libc_link_dests= | |
1141 | libc_link_sources= | |
1142 | ||
cb343854 UD |
1143 | # They also can set these variables. |
1144 | ldd_rewrite_script=no | |
1145 | ||
28f540f4 RM |
1146 | # Iterate over all the sysdep directories we will use, running their |
1147 | # configure fragments, and looking for a uname implementation. | |
1148 | uname= | |
1149 | for dir in $sysnames; do | |
57ba7bb4 UD |
1150 | case $dir in |
1151 | /*) dest=$dir ;; | |
1152 | *) dest=$srcdir/$dir ;; | |
1153 | esac | |
1154 | if test -r $dest/configure; then | |
1155 | AC_MSG_RESULT(running configure fragment for $dest) | |
1156 | . $dest/configure | |
28f540f4 | 1157 | fi |
4ca84cff | 1158 | [ |
28f540f4 | 1159 | if test -z "$uname"; then |
e7f1f046 UD |
1160 | if test -r $dest/uname.c || |
1161 | test -r $dest/uname.S || | |
1162 | { test -r $dest/syscalls.list && | |
1163 | grep '^uname[ ]' $dest/syscalls.list >/dev/null; }; then | |
b86199fb | 1164 | uname=$dir |
4ca84cff | 1165 | fi |
28f540f4 | 1166 | fi |
4ca84cff | 1167 | ]dnl |
28f540f4 RM |
1168 | done |
1169 | ||
1170 | AC_LINK_FILES(`echo $libc_link_sources`, `echo $libc_link_dests`) | |
1171 | ||
1172 | # If we will use the generic uname implementation, we must figure out what | |
1173 | # it will say by examining the system, and write the results in config-name.h. | |
e7f1f046 | 1174 | if test "$uname" = "sysdeps/generic"; then |
28f540f4 RM |
1175 | |
1176 | changequote(,)dnl | |
1177 | uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'` | |
1178 | changequote([,])dnl | |
1179 | if test $uname_sysname != $config_os; then | |
1180 | config_release=`echo $config_os | sed s/$uname_sysname//` | |
1181 | fi | |
1182 | dnl | |
1183 | AC_DEFUN(LIBC_KERNEL_ID, [dnl | |
1184 | if test -r /vmunix; then | |
1185 | kernel_id=`strings /vmunix | grep UNIX` | |
1186 | elif test -r /dynix; then | |
1187 | kernel_id=`strings /dynix | grep DYNIX` | |
1188 | else | |
1189 | kernel_id= | |
1190 | fi | |
1191 | ])dnl | |
1192 | ||
b8dc6a10 | 1193 | AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl |
28f540f4 RM |
1194 | AC_REQUIRE([LIBC_KERNEL_ID])dnl |
1195 | changequote(,)dnl | |
1196 | kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'` | |
1197 | changequote([,])dnl | |
1198 | if test x`echo "$config_release" | sed "s/^$kernel_release//"` \ | |
1199 | != x$config_release; then | |
1200 | # The configuration release is a substring of the kernel release. | |
1201 | libc_cv_uname_release=$kernel_release | |
1202 | elif test x$config_release != x; then | |
1203 | libc_cv_uname_release=$config_release | |
1204 | elif test x$kernel_release != x; then | |
1205 | libc_cv_uname_release=$kernel_release | |
1206 | else | |
1207 | libc_cv_uname_release=unknown | |
1208 | fi]) | |
28f540f4 RM |
1209 | uname_release="$libc_cv_uname_release" |
1210 | ||
b8dc6a10 | 1211 | AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl |
28f540f4 RM |
1212 | AC_REQUIRE([LIBC_KERNEL_ID])dnl |
1213 | changequote(,)dnl | |
1214 | kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'` | |
1215 | changequote([,])dnl | |
1216 | if test -n "$kernel_version"; then | |
1217 | libc_cv_uname_version="$kernel_version" | |
1218 | else | |
1219 | libc_cv_uname_version=unknown | |
1220 | fi]) | |
28f540f4 RM |
1221 | uname_version="$libc_cv_uname_version" |
1222 | ||
1223 | AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl | |
1224 | config_uname=config-name.h:config-name.in | |
1225 | else | |
1226 | # For non-generic uname, we don't need to create config-name.h at all. | |
1227 | config_uname= | |
1228 | fi | |
1229 | ||
96aa2d94 RM |
1230 | AC_MSG_CHECKING(stdio selection) |
1231 | AC_SUBST(stdio) | |
1232 | case $stdio in | |
1233 | libio) AC_DEFINE(USE_IN_LIBIO) ;; | |
1234 | default) stdio=stdio ;; | |
1235 | esac | |
1236 | AC_MSG_RESULT($stdio) | |
1237 | ||
a53bad16 UD |
1238 | # Test for old glibc 2.0.x headers so that they can be removed properly |
1239 | # Search only in includedir. | |
1240 | AC_MSG_CHECKING(for old glibc 2.0.x headers) | |
350eb336 | 1241 | if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h" |
a53bad16 UD |
1242 | then |
1243 | old_glibc_headers=yes | |
1244 | else | |
1245 | old_glibc_headers=no | |
1246 | fi | |
1247 | AC_MSG_RESULT($old_glibc_headers) | |
1248 | if test ${old_glibc_headers} = yes; then | |
1249 | AC_MSG_WARN(*** During \"make install\" old headers from glibc 2.0.x will) | |
1250 | AC_MSG_WARN(*** be removed.) | |
1251 | fi | |
b195f6bc | 1252 | AC_SUBST(old_glibc_headers) |
26b4d766 | 1253 | |
84384f5b UD |
1254 | AC_SUBST(libc_cv_slibdir) |
1255 | AC_SUBST(libc_cv_sysconfdir) | |
1ef32c3d UD |
1256 | AC_SUBST(libc_cv_rootsbindir) |
1257 | ||
1258 | AC_SUBST(has_ldconfig) | |
cb343854 | 1259 | AC_SUBST(ldd_rewrite_script) |
84384f5b | 1260 | |
c224a18a | 1261 | AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf) |
28f540f4 RM |
1262 | if test $gnu_ld = yes; then |
1263 | AC_DEFINE(HAVE_GNU_LD) | |
1264 | fi | |
1265 | if test $gnu_as = yes; then | |
1266 | AC_DEFINE(HAVE_GNU_AS) | |
1267 | fi | |
1268 | if test $elf = yes; then | |
1269 | AC_DEFINE(HAVE_ELF) | |
1270 | fi | |
28f540f4 | 1271 | |
650425ce | 1272 | AC_SUBST(static) |
ff3d7ed3 RM |
1273 | AC_SUBST(shared) |
1274 | if test $shared = default; then | |
1275 | if test $gnu_ld = yes; then | |
1276 | shared=$elf | |
f65fd747 UD |
1277 | else |
1278 | # For now we do not assume shared libs are available. In future more | |
1279 | # tests might become available. | |
1280 | shared=no | |
ff3d7ed3 RM |
1281 | fi |
1282 | fi | |
cc3fa755 UD |
1283 | |
1284 | AC_CACHE_CHECK([whether -fPIC is default], pic_default, | |
1285 | [pic_default=yes | |
1286 | cat > conftest.c <<EOF | |
9756dfe1 | 1287 | #if defined __PIC__ || defined __pic__ || defined PIC || defined pic |
cc3fa755 UD |
1288 | # error PIC is default. |
1289 | #endif | |
1290 | EOF | |
1291 | if eval "${CC-cc} -S conftest.c 2>&AC_FD_CC 1>&AC_FD_CC"; then | |
1292 | pic_default=no | |
1293 | fi | |
1294 | rm -f conftest.*]) | |
1295 | AC_SUBST(pic_default) | |
1296 | ||
ff3d7ed3 RM |
1297 | AC_SUBST(profile) |
1298 | AC_SUBST(omitfp) | |
5a97622d | 1299 | AC_SUBST(bounded) |
5107cf1d | 1300 | AC_SUBST(static_nss) |
5ae3e846 | 1301 | AC_SUBST(nopic_initfini) |
ff3d7ed3 | 1302 | |
edf5b2d7 UD |
1303 | AC_SUBST(DEFINES) |
1304 | ||
7cabd57c UD |
1305 | case "$add_ons" in |
1306 | *door*) linux_doors=yes ;; | |
1307 | *) linux_doors=no ;; | |
1308 | esac | |
1309 | AC_SUBST(linux_doors) | |
1310 | ||
28f540f4 RM |
1311 | if test "`(cd $srcdir; pwd)`" = "`pwd`"; then |
1312 | config_makefile= | |
1313 | else | |
1314 | config_makefile=Makefile | |
1315 | fi | |
1316 | ||
ee74a442 UD |
1317 | VERSION=`sed -n -e 's/^#define VERSION "\([^"]*\)"/\1/p' < $srcdir/version.h` |
1318 | RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h` | |
df4ef2ab | 1319 | AC_SUBST(VERSION) |
ee74a442 | 1320 | AC_SUBST(RELEASE) |
df4ef2ab | 1321 | |
0013b2b1 UD |
1322 | echo '*** Do NOT install this release on any production system!' |
1323 | echo '*** It is known to be broken and will be so for quite some time.' | |
1324 | echo '*** Use the latest released version instead.' | |
1325 | ||
737547be UD |
1326 | AC_OUTPUT(config.make glibcbug ${config_makefile} ${config_uname}, [ |
1327 | case $CONFIG_FILES in *config.make*) | |
1328 | echo "$config_vars" >> config.make;; | |
1329 | esac | |
1330 | test -d bits || mkdir bits], [config_vars='$config_vars']) |