| blob | 177e3e4abf8c19e030add728952a0f75d7402881 |
1 dnl Process this file with autoconf to produce a configure script.
2 AC_REVISION([$CVSid$])
3 AC_PREREQ(2.13)dnl dnl Minimum Autoconf version required.
4 AC_INIT(include/features.h)
5 AC_CONFIG_HEADER(config.h)
6 AC_CONFIG_AUX_DIR(scripts)
8 # This will get text that should go into config.make.
9 config_vars=
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 = $withval" ;;
20 esac
21 ])
22 # Check for a --with-gd argument and set libgd-LDFLAGS in config.make.
23 AC_ARG_WITH(gd, dnl
24 --with-gd=DIR find libgd include dir and library with prefix DIR,
25 [dnl
26 case "$with_gd" in
27 yes|''|no) ;;
28 *) libgd_include="-I$withval/include"
29 libgd_ldflags="-L$withval/lib" ;;
30 esac
31 ])
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 ])
49 if test -n "$libgd_include"; then
50 config_vars="$config_vars
51 CFLAGS-memusagestat.c = $libgd_include"
52 fi
53 if test -n "$libgd_ldflags"; then
54 config_vars="$config_vars
55 libgd-LDFLAGS = $libgd_ldflags"
56 fi
58 dnl Arguments to specify presence of other packages/features.
59 AC_ARG_WITH(fp, dnl
60 [ --with-fp if using floating-point hardware [default=yes]],
61 with_fp=$withval, with_fp=yes)
62 AC_ARG_WITH(binutils, dnl
63 --with-binutils=PATH specify location of binutils (as and ld),
64 path_binutils=$withval, path_binutils='')
65 AC_ARG_WITH(elf, dnl
66 --with-elf if using the ELF object format,
67 elf=$withval, elf=no)
68 AC_ARG_WITH(xcoff, dnl
69 --with-xcoff if using the XCOFF object format,
70 xcoff=$withval, xcoff=no)
71 AC_ARG_WITH(cvs, dnl
72 [ --without-cvs if CVS should not be used],
73 with_cvs=$withval, with_cvs=yes)
74 if test "$with_cvs" = yes; then
75 if test -d $srcdir/CVS && grep :pserver: $srcdir/CVS/Root > /dev/null
76 then
77 with_cvs=no
78 fi
79 fi
80 AC_SUBST(with_cvs)
82 AC_ARG_WITH(headers, dnl
83 [ --with-headers=PATH location of system headers to use
84 [e.g. /usr/src/linux/include]
85 [default=compiler default]],
86 sysheaders=$withval, sysheaders='')
88 AC_ARG_ENABLE(libio, dnl
89 [ --enable-libio build in GNU libio instead of GNU stdio],
90 [if test $enableval = yes; then
91 stdio=libio
92 else
93 stdio=stdio
94 fi],
95 stdio=default)
97 AC_ARG_ENABLE(sanity-checks, dnl
98 [ --disable-sanity-checks really do not use threads (should not be used
99 except in special situations) [default=yes]],
100 enable_sanity=$enableval, enable_sanity=yes)
102 dnl Arguments to enable or disable building the static, shared, profiled,
103 dnl and -fomit-frame-pointer libraries.
104 dnl I've disabled this for now since we cannot build glibc without static
105 dnl libraries built in the moment.
106 dnl AC_ARG_ENABLE(static, dnl
107 dnl [ --enable-static build static library [default=yes]],
108 dnl static=$enableval, static=yes)
109 static=yes
110 AC_ARG_ENABLE(shared, dnl
111 [ --enable-shared build shared library [default=yes if GNU ld & ELF]],
112 shared=$enableval, shared=default)
113 AC_ARG_ENABLE(profile, dnl
114 [ --enable-profile build profiled library [default=yes]],
115 profile=$enableval, profile=yes)
116 AC_ARG_ENABLE(omitfp, dnl
117 [ --enable-omitfp build undebuggable optimized library [default=no]],
118 omitfp=$enableval, omitfp=no)
119 AC_ARG_ENABLE(bounded, dnl
120 [ --enable-bounded build with runtime bounds checking [default=no]],
121 bounded=$enableval, bounded=no)
122 AC_ARG_ENABLE(versioning, dnl
123 [ --disable-versioning do not include versioning information in the
124 library objects [default=yes if supported]],
125 enable_versioning=$enableval, enable_versioning=yes)
127 AC_ARG_ENABLE(oldest-abi, dnl
128 [ --enable-oldest-abi=ABI configure the oldest ABI supported [e.g. 2.2]
129 [default=glibc default]],
130 oldest_abi=$enableval, oldest_abi=no)
131 if test "$oldest_abi" = yes || test "$oldest_abi" = no; then
132 oldest_abi=default
133 else
134 AC_DEFINE_UNQUOTED(GLIBC_OLDEST_ABI, "$oldest_abi")
135 fi
136 AC_SUBST(oldest_abi)
138 dnl Generic infrastructure for drop-in additions to libc.
139 AC_ARG_ENABLE(add-ons, dnl
140 [ --enable-add-ons[=DIR1,DIR2]...
141 configure and build add-ons in DIR1,DIR2,...
142 search for add-ons if no parameter given],
143 [case "$enableval" in
144 yes) add_ons=`cd $srcdir && echo */configure | sed -e 's!/configure!!g'`
145 test "$add_ons" = "*" && add_ons= ;;
146 *) add_ons=`echo "$enableval" | sed 's/,/ /g'`;;
147 esac],
148 [add_ons=])
150 AC_CONFIG_SUBDIRS($add_ons)
151 add_ons_pfx=
152 if test x"$add_ons" != x; then
153 for f in $add_ons; do
154 # Some sanity checks
155 if test "$f" = "crypt"; then
156 AC_MSG_ERROR([
157 *** It seems that you're using an old \`crypt' add-on. crypt is now
158 *** part of glibc and using the old add-on will not work with this
159 *** release. Start again with fresh sources and without the old
160 *** \`crypt' add-on.])
161 fi
162 if test "$f" = "localedata"; then
163 AC_MSG_ERROR([
164 *** It seems that you're using an old \`localedata' add-on. localedata
165 *** is now part of glibc and using the old add-on will not work with
166 *** this release. Start again with fresh sources and without the old
167 *** \`localedata' add-on.])
168 fi
169 # Test whether such a subdir really exists.
170 if test -d $srcdir/$f; then
171 add_ons_pfx="$add_ons_pfx $f/"
172 else
173 AC_MSG_ERROR(add-on directory \"$f\" does not exist)
174 fi
175 done
176 fi
178 dnl On some platforms we cannot use dynamic loading. We must provide
179 dnl static NSS modules.
180 AC_ARG_ENABLE(static-nss, dnl
181 [ --enable-static-nss build static NSS modules [default=no]],
182 static_nss=$enableval, static_nss=no)
183 if test x"$static_nss" = xyes; then
184 AC_DEFINE(DO_STATIC_NSS)
185 fi
187 AC_ARG_ENABLE(force-install,
188 [ --disable-force-install don't force installation of files from this package,
189 even if they are older than the installed files],
190 force_install=$enableval, force_install=yes)
191 AC_SUBST(force_install)
193 dnl On some platforms we allow dropping compatibility with all kernel
194 dnl versions.
195 AC_ARG_ENABLE(kernel,
196 [ --enable-kernel=VERSION compile for compatibility with kernel not older
197 than VERSION],
198 minimum_kernel=$enableval)
199 dnl Prevent unreasonable values.
200 if test "$minimum_kernel" = yes || test "$minimum_kernel" = no; then
201 # Better nothing than this.
202 minimum_kernel=""
203 else
204 if test "$minimum_kernel" = current; then
205 minimum_kernel=`uname -r 2>/dev/null` || minimum_kernel=
206 fi
207 fi
209 dnl For the development we sometimes want gcc to issue even more warnings.
210 dnl This is not the default since many of the extra warnings are not
211 dnl appropriate.
212 AC_ARG_ENABLE(all-warnings,
213 [ --enable-all-warnings enable all useful warnings gcc can issue],
214 all_warnings=$enableval)
215 AC_SUBST(all_warnings)
217 AC_CANONICAL_HOST
219 # The way shlib-versions is used to generate soversions.mk uses a
220 # fairly simplistic model for name recognition that can't distinguish
221 # i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os
222 # of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can
223 # tell. This doesn't get used much beyond that, so it's fairly safe.
224 case "$host_os" in
225 linux*)
226 ;;
227 gnu*)
228 host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'`
229 ;;
230 esac
232 # We keep the original values in `$config_*' and never modify them, so we
233 # can write them unchanged into config.make. Everything else uses
234 # $machine, $vendor, and $os, and changes them whenever convenient.
235 config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os
237 # Don't allow vendor == "unknown"
238 test "$config_vendor" = unknown && config_vendor=
239 config_os="`echo $config_os | sed 's/^unknown-//'`"
241 # Some configurations imply other options.
242 case "$host_os" in
243 gnu* | linux* | bsd4.4* | netbsd* | freebsd*)
244 # These systems always use GNU tools.
245 gnu_ld=yes gnu_as=yes ;;
246 esac
247 case "$host_os" in
248 # i586-linuxaout is mangled into i586-pc-linux-gnuaout
249 linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*)
250 ;;
251 gnu* | linux* | sysv4* | solaris2* | irix6*)
252 # These systems (almost) always use the ELF format.
253 elf=yes
254 ;;
255 aix*)
256 # These systems are always xcoff
257 xcoff=yes
258 elf=no
259 ;;
260 esac
262 machine=$config_machine
263 vendor=$config_vendor
264 os=$config_os
266 # config.guess on some IBM machines says `rs6000' instead of `powerpc'.
267 # Unify this here.
268 if test "$machine" = rs6000; then
269 machine="powerpc"
270 fi
272 ###
273 ### I put this here to prevent those annoying emails from people who cannot
274 ### read and try to compile glibc on unsupported platforms. --drepper
275 ###
276 ### By using the undocumented --enable-hacker-mode option for configure
277 ### one can skip this test to make the configuration not fail for unsupported
278 ### platforms.
279 ###
280 if test -z "$enable_hacker_mode"; then
281 case "$machine-$host_os" in
282 *-linux* | *-gnu* | arm*-none* | powerpc-aix4.3.*)
283 ;;
284 *)
285 echo "*** The GNU C library is currently not available for this platform."
286 echo "*** So far nobody cared to port it and if there is no volunteer it"
287 echo "*** might never happen. So, if you have interest to see glibc on"
288 echo "*** this platform visit"
289 echo "*** http://www.gnu.org/software/libc/porting.html"
290 echo "*** and join the group of porters"
291 exit 1
292 ;;
293 esac
294 fi
296 dnl We need to use [ and ] for other purposes for a while now.
297 changequote(,)dnl
298 # Expand the configuration machine name into a subdirectory by architecture
299 # type and particular chip.
300 case "$machine" in
301 a29k | am29000) base_machine=a29k machine=a29k ;;
302 alpha*) base_machine=alpha machine=alpha/$machine ;;
303 arm*) base_machine=arm machine=arm/arm32/$machine ;;
304 c3[012]) base_machine=cx0 machine=cx0/c30 ;;
305 c4[04]) base_machine=cx0 machine=cx0/c40 ;;
306 hppa*64*) base_machine=hppa machine=hppa/hppa64 ;;
307 hppa*) base_machine=hppa machine=hppa/hppa1.1 ;;
308 i[3456]86) base_machine=i386 machine=i386/$machine ;;
309 ia64) base_machine=ia64 machine=ia64 ;;
310 m680?0) base_machine=m68k machine=m68k/$machine ;;
311 m68k) base_machine=m68k machine=m68k/m68020 ;;
312 m88???) base_machine=m88k machine=m88k/$machine ;;
313 m88k) base_machine=m88k machine=m88k/m88100 ;;
314 mips64*) base_machine=mips64 machine=mips/mips64/$machine ;;
315 mips*) base_machine=mips
316 case "`uname -m`" in
317 IP22) machine=mips/mips3 ;;
318 *) machine=mips/$machine ;;
319 esac ;;
320 s390) base_machine=s390 machine=s390/s390-32 ;;
321 s390x) base_machine=s390 machine=s390/s390-64 ;;
322 sh3*) base_machine=sh machine=sh/sh3 ;;
323 sh4*) base_machine=sh machine=sh/sh4 ;;
324 sparc | sparcv[67])
325 base_machine=sparc machine=sparc/sparc32 ;;
326 sparcv8 | supersparc | hypersparc)
327 base_machine=sparc machine=sparc/sparc32/sparcv8 ;;
328 sparcv8plus | sparcv8plusa | sparcv9)
329 base_machine=sparc machine=sparc/sparc32/sparcv9 ;;
330 sparcv8plusb | sparcv9b)
331 base_machine=sparc machine=sparc/sparc32/sparcv9b ;;
332 sparc64 | ultrasparc)
333 base_machine=sparc machine=sparc/sparc64 ;;
334 sparc64b | ultrasparc3)
335 base_machine=sparc machine=sparc/sparc64/sparcv9b ;;
336 thumb*) base_machine=thumb machine=arm/thumb/$machine ;;
337 esac
338 changequote([,])dnl
339 AC_SUBST(base_machine)
341 if test "$base_machine" = "i386"; then
342 AC_DEFINE(USE_REGPARMS)
343 fi
345 # Compute the list of sysdep directories for this configuration.
346 # This can take a while to compute.
347 sysdep_dir=$srcdir/sysdeps
348 AC_MSG_CHECKING(sysdep dirs)
349 dnl We need to use [ and ] for other purposes for a while now.
350 changequote(,)dnl
351 # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1.
352 os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`"
354 case "$os" in
355 gnu*)
356 base_os=mach/hurd ;;
357 netbsd* | 386bsd* | freebsd* | bsdi*)
358 base_os=unix/bsd/bsd4.4 ;;
359 osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*)
360 base_os=unix/bsd ;;
361 sysv* | isc* | esix* | sco* | minix* | irix4* | linux*)
362 base_os=unix/sysv ;;
363 irix6*)
364 base_os=unix/sysv/irix6/$os ;;
365 solaris[2-9]*)
366 base_os=unix/sysv/sysv4 ;;
367 hpux*)
368 base_os=unix/sysv/hpux/$os ;;
369 aix4.3*)
370 base_os=unix/sysv/aix/aix4.3 ;;
371 none)
372 base_os=standalone ;;
373 *)
374 base_os='' ;;
375 esac
377 # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos.
378 tail=$os
379 ostry=$os
380 while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do
381 ostry="$ostry /$o"
382 tail=$o
383 done
384 o=`echo $tail | sed 's/[0-9]*$//'`
385 if test $o != $tail; then
386 ostry="$ostry /$o"
387 fi
388 # For linux-gnu, try linux-gnu, then linux.
389 o=`echo $tail | sed 's/-.*$//'`
390 if test $o != $tail; then
391 ostry="$ostry /$o"
392 fi
394 # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix.
395 base=
396 tail=$base_os
397 while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do
398 set $b
399 base="$base /$1"
400 tail="$2"
401 done
403 # For sparc/sparc32, try sparc/sparc32 and then sparc.
404 mach=
405 tail=$machine
406 while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do
407 set $m
408 # Prepend the machine's FPU directory unless --without-fp.
409 if test "$with_fp" = yes; then
410 mach="$mach /$1/fpu"
411 fi
412 mach="$mach /$1"
413 tail="$2"
414 done
416 dnl We are done with glob and regexp uses of [ and ]; return to autoconf.
417 changequote([,])dnl
419 # Find what sysdep directories exist.
420 sysnames=
421 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
422 for d in $add_ons_pfx ''; do
423 for b in $base ''; do
424 for m0 in $mach ''; do
425 for v in /$vendor ''; do
426 test "$v" = / && continue
427 for o in /$ostry ''; do
428 test "$o" = / && continue
429 for m in $mach ''; do
430 if test "$m0$b$v$o$m"; then
431 try="${d}sysdeps$m0$b$v$o$m"
432 test -n "$enable_debug_configure" &&
433 echo "$0 [DEBUG]: try $try" >&2
434 if test -d $srcdir/$try; then
435 sysnames="$sysnames $try"
436 { test -n "$o" || test -n "$b"; } && os_used=t
437 { test -n "$m" || test -n "$m0"; } && machine_used=t
438 fi
439 fi
440 done
441 done
442 done
443 done
444 done
445 done
446 IFS="$ac_save_ifs"
448 if test -z "$os_used" && test "$os" != none; then
449 AC_MSG_ERROR(Operating system $os is not supported.)
450 fi
451 if test -z "$machine_used" && test "$machine" != none; then
452 AC_MSG_ERROR(The $machine is not supported.)
453 fi
455 # We have now validated the configuration.
458 # If using ELF, look for an `elf' subdirectory of each machine directory.
459 # We prepend these rather than inserting them whereever the machine appears
460 # because things specified by the machine's ELF ABI should override
461 # OS-specific things, and should always be the same for any OS on the
462 # machine (otherwise what's the point of an ABI?).
463 if test "$elf" = yes; then
464 elf_dirs=
465 for d in $add_ons_pfx ''; do
466 for m in $mach; do
467 if test -d $srcdir/${d}sysdeps$m/elf; then
468 elf_dirs="$elf_dirs ${d}sysdeps$m/elf"
469 fi
470 done
471 done
472 sysnames="`echo $elf_dirs | sed -e 's,//,/,g'` $sysnames"
473 fi
476 # Expand the list of system names into a full list of directories
477 # from each element's parent name and Implies file (if present).
478 set $sysnames
479 names=
480 while test $# -gt 0; do
481 name=$1
482 shift
484 case " $names " in *" $name "*)
485 # Already in the list.
486 continue
487 esac
489 # Report each name as we discover it, so there is no long pause in output.
490 echo $ac_n "$name $ac_c" >&AC_FD_MSG
492 name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'`
494 case $name in
495 /*) xsrcdir= ;;
496 *) xsrcdir=$srcdir/ ;;
497 esac
498 test -n "$enable_debug_configure" &&
499 echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2
501 if test -f $xsrcdir$name/Implies; then
502 # Collect more names from the `Implies' file (removing comments).
503 implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/Implies`"
504 implied=
505 for x in $implied_candidate; do
506 found=no
507 if test -d $xsrcdir$name_base/$x; then
508 implied="$implied $name_base/$x";
509 found=yes
510 fi
511 for d in $add_ons_pfx ''; do
512 try="${d}sysdeps/$x"
513 case $d in
514 /*) try_srcdir= ;;
515 *) try_srcdir=$srcdir/ ;;
516 esac
517 test -n "$enable_debug_configure" &&
518 echo "[DEBUG]: $name implied $x try($d) {$try_srcdir}$try" >&2
519 if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try;
520 then
521 implied="$implied $try"
522 found=yes
523 fi
524 done
525 if test $found = no; then
526 AC_MSG_WARN($name/Implies specifies nonexistent $x)
527 fi
528 done
529 else
530 implied=
531 fi
533 # Add NAME to the list of names.
534 names="$names $name"
536 # Find the parent of NAME, using the empty string if it has none.
537 changequote(,)dnl
538 parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`"
539 changequote([,])dnl
541 # Add the names implied by NAME, and NAME's parent (if it has one), to
542 # the list of names to be processed (the argument list). We prepend the
543 # implied names to the list and append the parent. We want implied
544 # directories to come before further directories inferred from the
545 # configuration components; this ensures that for sysv4, unix/common
546 # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*)
547 # after sysv4).
548 sysnames="`echo $implied $* $parent`"
549 test -n "$sysnames" && set $sysnames
550 done
552 # Add the default directories.
553 default_sysnames=sysdeps/generic
554 if test "$elf" = yes; then
555 default_sysnames="sysdeps/generic/elf $default_sysnames"
556 fi
557 sysnames="$names $default_sysnames"
558 AC_SUBST(sysnames)
559 # The other names were emitted during the scan.
560 AC_MSG_RESULT($default_sysnames)
563 ### Locate tools.
565 AC_PROG_INSTALL
566 if test "$INSTALL" = "${srcdir}/scripts/install-sh -c"; then
567 # The makefiles need to use a different form to find it in $srcdir.
568 INSTALL='\$(..)./scripts/install-sh -c'
569 fi
570 AC_PROG_LN_S
572 # We need the physical current working directory. We cannot use the
573 # "pwd -P" shell builtin since that's not portable. Instead we try to
574 # find a pwd binary. Note that assigning to the PWD environment
575 # variable might have some interesting side effects, so we don't do
576 # that.
577 AC_PATH_PROG(PWD_P, pwd, no)
578 if test "$PWD_P" = no; then
579 AC_MSG_ERROR(*** A pwd binary could not be found.)
580 fi
582 # These programs are version sensitive.
583 AC_REQUIRE([AC_CHECK_TOOL_PREFIX])dnl
584 AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v,
585 [version \([egcygnustpi-]*[0-9.]*\)],
586 [*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-*],
587 critic_missing=gcc)
588 AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version,
589 [GNU Make[^0-9]*\([0-9][0-9.]*\)],
590 [3.79* | 3.[89]*], critic_missing="$critic_missing make")
593 if test -n "$critic_missing"; then
594 AC_MSG_ERROR([
595 *** These critical programs are missing or too old:$critic_missing
596 *** Check the INSTALL file for required versions.])
597 fi
600 AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version,
601 [GNU gettext.* \([0-9]*\.[0-9.]*\)],
602 [0.10.3[6-9]* | 0.10.[4-9][0-9]* | 0.1[1-9]* | 0.[2-9][0-9]* | [1-9].*],
603 MSGFMT=: aux_missing="$aux_missing msgfmt")
604 AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
605 [GNU texinfo.* \([0-9][0-9.]*\)],
606 [4.*],
607 MAKEINFO=: aux_missing="$aux_missing makeinfo")
608 AC_CHECK_PROG_VER(SED, gsed sed, --version,
609 [GNU sed version \([0-9]*\.[0-9.]*\)],
610 [3.0[2-9]*|3.[1-9]*|[4-9]*],
611 SED=: aux_missing="$aux_missing sed")
613 AC_PROG_CC_LOCAL
614 AC_CANONICAL_BUILD
615 if test $host != $build; then
616 AC_CHECK_PROGS(BUILD_CC, gcc cc)
617 fi
618 AC_SUBST(cross_compiling)
619 AC_PROG_CPP
620 LIBC_PROG_BINUTILS
621 AC_CHECK_TOOL(MIG, mig)
623 # Accept binutils 2.10.1 or newer (and also any ia64 2.9 version)
624 # XXX Commented out because it filters out too many good versions.
625 # XXX --drepper
626 # AC_CHECK_PROG_VER(AS, $AS, --version,
627 # [GNU assembler.* \([0-9]*\.[0-9.]*\(-ia64-[0-9]*\)*\)],
628 # [2.10.[1-9]* | 2.1[1-9]* | 2.9-ia64-*], AS=: critic_missing=t)
630 test -n "$aux_missing" && AC_MSG_WARN([
631 *** These auxiliary programs are missing or too old:$aux_missing
632 *** some features will be disabled.
633 *** Check the INSTALL file for required versions.])
635 # glibcbug.in wants to know the compiler version.
636 CCVERSION=`$CC -v 2>&1 | sed -n 's/gcc version //p'`
637 AC_SUBST(CCVERSION)
639 # if using special system headers, find out the compiler's sekrit
640 # header directory and add that to the list. NOTE: Only does the right
641 # thing on a system that doesn't need fixincludes. (Not presently a problem.)
642 if test -n "$sysheaders"; then
643 ccheaders=`$CC -print-file-name=include`
644 SYSINCLUDES="-nostdinc -isystem $ccheaders -isystem $sysheaders"
645 fi
646 AC_SUBST(SYSINCLUDES)
648 # check if ranlib is necessary
649 AC_CACHE_CHECK(whether ranlib is necessary, libc_cv_ranlib_necessary, [dnl
650 cat > conftest.c <<EOF
651 int a;
652 char b;
653 void c(void) {}
654 EOF
655 $CC $CFLAGS -c conftest.c
656 $AR cr conftest.a conftest.c
657 cp conftest.a conftest2.a
658 $RANLIB conftest.a
659 if cmp -s conftest.a conftest2.a; then
660 libc_cv_ranlib_necessary=no
661 else
662 libc_cv_ranlib_necessary=yes
663 fi
664 rm -rf conftest*])
665 if test "$libc_cv_ranlib_necessary" = no; then
666 RANLIB=:
667 fi
669 # Test if LD_LIBRARY_PATH contains the notation for the current directory
670 # since this would lead to problems installing/building glibc.
671 # LD_LIBRARY_PATH contains the current directory if one of the following
672 # is true:
673 # - one of the terminals (":" and ";") is the first or last sign
674 # - two terminals occur directly after each other
675 # - the path contains an element with a dot in it
676 AC_MSG_CHECKING(LD_LIBRARY_PATH variable)
677 changequote(,)dnl
678 case ${LD_LIBRARY_PATH} in
679 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
680 ld_library_path_setting="contains current directory"
681 ;;
682 *)
683 ld_library_path_setting="ok"
684 ;;
685 esac
686 changequote([,])dnl
687 AC_MSG_RESULT($ld_library_path_setting)
688 if test "$ld_library_path_setting" != "ok"; then
689 AC_MSG_ERROR([
690 *** LD_LIBRARY_PATH shouldn't contain the current directory when
691 *** building glibc. Please change the environment variable
692 *** and run configure again.])
693 fi
695 AC_PATH_PROG(BASH, bash, no)
696 if test "$BASH" != no &&
697 $BASH -c 'test "$BASH_VERSINFO" \
698 && test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then
699 libc_cv_have_bash2=yes
700 else
701 libc_cv_have_bash2=no
702 fi
703 AC_SUBST(libc_cv_have_bash2)
705 dnl We need a ksh compatible shell for tzselect.
706 if test "$BASH" = no; then
707 AC_PATH_PROG(KSH, ksh, no)
708 if test "$KSH" = no; then
709 libc_cv_have_ksh=no
710 else
711 libc_cv_have_ksh=yes
712 fi
713 else
714 KSH="$BASH"
715 AC_SUBST(KSH)
716 libc_cv_have_ksh=yes
717 fi
718 AC_SUBST(libc_cv_have_ksh)
720 AC_PROG_AWK
721 AC_PATH_PROG(PERL, perl, no)
722 if test "$PERL" != no &&
723 (eval `$PERL -V:apiversion`; test `expr "$apiversion" \< 5` -ne 0); then
724 PERL=no
725 fi
726 AC_PATH_PROG(INSTALL_INFO, install-info, no,
727 $PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin)
728 if test "$INSTALL_INFO" != "no"; then
729 AC_CACHE_CHECK(for old Debian install-info, libc_cv_old_debian_install_info,
730 [mkdir conftest.d
731 # There is a hard ^_ on the next line. I am open to better ideas.
732 (echo '\x1f'
733 echo 'File: dir Node: Top This is the top of the INFO tree'
734 echo '* Menu:') >conftest.d/dir
735 (echo 'INFO-DIR-SECTION i-d-s works'
736 echo 'START-INFO-DIR-ENTRY'
737 echo '* Prog: (prog). Program.'
738 echo 'END-INFO-DIR-ENTRY') >conftest.d/prog.info
739 if $INSTALL_INFO --info-dir=conftest.d conftest.d/prog.info >&AC_FD_CC 2>&1
740 then
741 if grep -s 'i-d-s works' conftest.d/dir >/dev/null
742 then libc_cv_old_debian_install_info=no
743 else libc_cv_old_debian_install_info=yes
744 fi
745 else libc_cv_old_debian_install_info=no testfailed=t
746 fi
747 rm -fr conftest.d])
748 if test -n "$testfailed"
749 then AC_MSG_WARN([install-info errored out, check config.log])
750 fi
751 OLD_DEBIAN_INSTALL_INFO=$libc_cv_old_debian_install_info
752 fi
753 AC_SUBST(OLD_DEBIAN_INSTALL_INFO)
755 AC_PATH_PROG(BISON, bison, no, $PATH:/usr/local/bin:/usr/bin:/bin)
757 AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl
758 echo '#include <stddef.h>
759 FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c
760 if eval "$ac_cpp conftest.c 2>/dev/null" \
761 | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then
762 libc_cv_signed_size_t=no
763 else
764 libc_cv_signed_size_t=yes
765 fi
766 rm -f conftest*])
767 if test $libc_cv_signed_size_t = yes; then
768 dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings.
769 cat >> confdefs.h <<\EOF
770 #undef __SIZE_TYPE__
771 #define __SIZE_TYPE__ unsigned
772 EOF
773 fi
775 AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl
776 AC_TRY_COMPILE(dnl
777 [#define __need_size_t
778 #define __need_wchar_t
779 #include <stddef.h>
780 #define __need_NULL
781 #include <stddef.h>], [size_t size; wchar_t wchar;
782 #ifdef offsetof
783 #error stddef.h ignored __need_*
784 #endif
785 if (&size == NULL || &wchar == NULL) abort ();],
786 libc_cv_friendly_stddef=yes,
787 libc_cv_friendly_stddef=no)])
788 if test $libc_cv_friendly_stddef = yes; then
789 config_vars="$config_vars
790 override stddef.h = # The installed <stddef.h> seems to be libc-friendly."
791 fi
793 AC_CACHE_CHECK(whether we need to use -P to assemble .S files,
794 libc_cv_need_minus_P, [dnl
795 cat > conftest.S <<EOF
796 #include "confdefs.h"
797 /* Nothing whatsoever. */
798 EOF
799 if ${CC-cc} $CFLAGS -c conftest.S 2>/dev/null; then
800 libc_cv_need_minus_P=no
801 else
802 libc_cv_need_minus_P=yes
803 fi
804 rm -f conftest*])
805 if test $libc_cv_need_minus_P = yes; then
806 config_vars="$config_vars
807 asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives."
808 fi
810 AC_MSG_CHECKING(whether .text pseudo-op must be used)
811 AC_CACHE_VAL(libc_cv_dot_text, [dnl
812 cat > conftest.s <<EOF
813 .text
814 EOF
815 libc_cv_dot_text=
816 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
817 libc_cv_dot_text=.text
818 fi
819 rm -f conftest*])
820 if test -z "$libc_cv_dot_text"; then
821 AC_MSG_RESULT(no)
822 else
823 AC_MSG_RESULT(yes)
824 fi
826 AC_CACHE_CHECK(for assembler global-symbol directive,
827 libc_cv_asm_global_directive, [dnl
828 libc_cv_asm_global_directive=UNKNOWN
829 for ac_globl in .globl .global .EXPORT; do
830 cat > conftest.s <<EOF
831 ${libc_cv_dot_text}
832 ${ac_globl} foo
833 foo:
834 EOF
835 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
836 libc_cv_asm_global_directive=${ac_globl}
837 fi
838 rm -f conftest*
839 test $libc_cv_asm_global_directive != UNKNOWN && break
840 done])
841 if test $libc_cv_asm_global_directive = UNKNOWN; then
842 AC_MSG_ERROR(cannot determine asm global directive)
843 else
844 AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive})
845 fi
847 AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl
848 cat > conftest.s <<EOF
849 ${libc_cv_dot_text}
850 foo:
851 .set glibc_conftest_frobozz,foo
852 $libc_cv_asm_global_directive glibc_conftest_frobozz
853 EOF
854 # The alpha-dec-osf1 assembler gives only a warning for `.set'
855 # (but it doesn't work), so we must do a linking check to be sure.
856 cat > conftest1.c <<\EOF
857 extern int glibc_conftest_frobozz;
858 main () { printf ("%d\n", glibc_conftest_frobozz); }
859 EOF
860 if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
861 -o conftest conftest.s conftest1.c 1>&AC_FD_CC 2>&AC_FD_CC; then
862 libc_cv_asm_set_directive=yes
863 else
864 libc_cv_asm_set_directive=no
865 fi
866 rm -f conftest*])
867 if test $libc_cv_asm_set_directive = yes; then
868 AC_DEFINE(HAVE_ASM_SET_DIRECTIVE)
869 fi
871 # The Aix ld uses global .symbol_names instead of symbol_names.
872 case "$os" in
873 aix4.3*)
874 AC_DEFINE(HAVE_ASM_GLOBAL_DOT_NAME)
875 esac
877 AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive,
878 [cat > conftest.s <<EOF
879 ${libc_cv_dot_text}
880 _sym:
881 .symver _sym,sym@VERS
882 EOF
883 if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then
884 libc_cv_asm_symver_directive=yes
885 else
886 libc_cv_asm_symver_directive=no
887 fi
888 rm -f conftest*])
889 AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl
890 if test $libc_cv_asm_symver_directive = yes; then
891 cat > conftest.s <<EOF
892 ${libc_cv_dot_text}
893 _sym:
894 .symver _sym,sym@VERS
895 EOF
896 cat > conftest.map <<EOF
897 VERS_1 {
898 global: sym;
899 };
901 VERS_2 {
902 global: sym;
903 } VERS_1;
904 EOF
905 if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then
906 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -shared -o conftest.so conftest.o
907 -nostartfiles -nostdlib
908 -Wl,--version-script,conftest.map
909 1>&AC_FD_CC]);
910 then
911 libc_cv_ld_version_script_option=yes
912 else
913 libc_cv_ld_version_script_option=no
914 fi
915 else
916 libc_cv_ld_version_script_option=no
917 fi
918 else
919 libc_cv_ld_version_script_option=no
920 fi
921 rm -f conftest*])
922 if test $shared != no &&
923 test $libc_cv_asm_symver_directive = yes &&
924 test $libc_cv_ld_version_script_option = yes &&
925 test $enable_versioning = yes; then
926 VERSIONING=yes
927 AC_DEFINE(DO_VERSIONING)
928 else
929 VERSIONING=no
930 fi
931 AC_SUBST(VERSIONING)
933 if test $elf = yes && test $shared != no && test $VERSIONING = no; then
934 echo "\
935 *** WARNING: You should not compile GNU libc without versioning. Not using
936 *** versioning will introduce incompatibilities so that old binaries
937 *** will not run anymore.
938 *** For versioning you need recent binutils (binutils-2.8.1.0.23 or newer)."
939 fi
940 if test $elf = yes; then
941 AC_CACHE_CHECK(for .previous assembler directive,
942 libc_cv_asm_previous_directive, [dnl
943 cat > conftest.s <<EOF
944 .section foo_section
945 .previous
946 EOF
947 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
948 libc_cv_asm_previous_directive=yes
949 else
950 libc_cv_asm_previous_directive=no
951 fi
952 rm -f conftest*])
953 if test $libc_cv_asm_previous_directive = yes; then
954 AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE)
955 else
956 AC_CACHE_CHECK(for .popsection assembler directive,
957 libc_cv_asm_popsection_directive, [dnl
958 cat > conftest.s <<EOF
959 .pushsection foo_section
960 .popsection
961 EOF
962 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
963 libc_cv_asm_popsection_directive=yes
964 else
965 libc_cv_asm_popsection_directive=no
966 fi
967 rm -f conftest*])
968 if test $libc_cv_asm_popsection_directive = yes; then
969 AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE)
970 fi
971 fi
972 AC_CACHE_CHECK(for .protected and .hidden assembler directive,
973 libc_cv_asm_protected_directive, [dnl
974 cat > conftest.s <<EOF
975 .protected foo
976 foo:
977 .hidden bar
978 bar:
979 EOF
980 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
981 libc_cv_asm_protected_directive=yes
982 else
983 libc_cv_asm_protected_directive=no
984 fi
985 rm -f conftest*])
986 AC_SUBST(libc_cv_asm_protected_directive)
988 AC_CACHE_CHECK(for -z nodelete option,
989 libc_cv_z_nodelete, [dnl
990 cat > conftest.c <<EOF
991 int _start (void) { return 42; }
992 EOF
993 if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c -Wl,--enable-new-dtags,-z,nodelete 1>&AC_FD_CC])
994 then
995 libc_cv_z_nodelete=yes
996 else
997 libc_cv_z_nodelete=no
998 fi
999 rm -f conftest*])
1000 AC_SUBST(libc_cv_z_nodelete)
1002 AC_CACHE_CHECK(for -z nodlopen option,
1003 libc_cv_z_nodlopen, [dnl
1004 cat > conftest.c <<EOF
1005 int _start (void) { return 42; }
1006 EOF
1007 if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c -Wl,--enable-new-dtags,-z,nodlopen 1>&AC_FD_CC])
1008 then
1009 libc_cv_z_nodlopen=yes
1010 else
1011 libc_cv_z_nodlopen=no
1012 fi
1013 rm -f conftest*])
1014 AC_SUBST(libc_cv_z_nodlopen)
1016 AC_CACHE_CHECK(for -z initfirst option,
1017 libc_cv_z_initfirst, [dnl
1018 cat > conftest.c <<EOF
1019 int _start (void) { return 42; }
1020 EOF
1021 if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c -Wl,--enable-new-dtags,-z,initfirst 1>&AC_FD_CC])
1022 then
1023 libc_cv_z_initfirst=yes
1024 else
1025 libc_cv_z_initfirst=no
1026 fi
1027 rm -f conftest*])
1028 AC_SUBST(libc_cv_z_initfirst)
1030 AC_CACHE_CHECK(for -Bgroup option,
1031 libc_cv_Bgroup, [dnl
1032 cat > conftest.c <<EOF
1033 int _start (void) { return 42; }
1034 EOF
1035 if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c -Wl,-Bgroup -nostdlib 1>&AC_FD_CC])
1036 then
1037 libc_cv_Bgroup=yes
1038 else
1039 libc_cv_Bgroup=no
1040 fi
1041 rm -f conftest*])
1042 AC_SUBST(libc_cv_Bgroup)
1043 fi
1045 if test $elf != yes; then
1046 AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini,
1047 [AC_TRY_COMPILE(, [asm (".section .init");
1048 asm (".section .fini");
1049 asm ("${libc_cv_dot_text}");],
1050 libc_cv_have_initfini=yes,
1051 libc_cv_have_initfini=no)])
1052 AC_SUBST(libc_cv_have_initfini)dnl
1053 if test $libc_cv_have_initfini = yes; then
1054 AC_DEFINE(HAVE_INITFINI)
1055 fi
1056 fi
1058 if test $elf = yes -a $gnu_ld = yes; then
1059 AC_CACHE_CHECK(whether cc puts quotes around section names,
1060 libc_cv_have_section_quotes,
1061 [cat > conftest.c <<EOF
1062 static const int foo
1063 __attribute__ ((section ("bar"))) = 1;
1064 EOF
1065 if ${CC-cc} -S conftest.c -o conftest.s; then
1066 if grep '\.section.*"bar"' conftest.s >/dev/null; then
1067 libc_cv_have_section_quotes=yes
1068 else
1069 libc_cv_have_section_quotes=no
1070 fi
1071 else
1072 libc_cv_have_section_quotes=unknown
1073 fi
1074 rm -f conftest.[cs]
1075 ])
1076 if test $libc_cv_have_section_quotes = yes; then
1077 AC_DEFINE(HAVE_SECTION_QUOTES)
1078 fi
1079 fi
1081 dnl AC_CHECK_ASM_UNDERSCORE([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
1082 AC_DEFUN(AC_CHECK_ASM_UNDERSCORE,
1083 [cat > conftest.$ac_ext <<EOF
1084 dnl This sometimes fails to find confdefs.h, for some reason.
1085 dnl [#]line __oline__ "[$]0"
1086 [#]line __oline__ "configure"
1087 #include "confdefs.h"
1088 void underscore_test(void) {
1089 return; }
1090 EOF
1091 if AC_TRY_EVAL(ac_compile); then
1092 if grep _underscore_test conftest* >/dev/null; then
1093 ifelse([$1], , :, [rm -f conftest*
1094 $1])
1095 else
1096 ifelse([$2], , , [rm -f conftest*
1097 $2])
1098 fi
1099 else
1100 echo "configure: failed program was:" >&AC_FD_CC
1101 cat conftest.$ac_ext >&AC_FD_CC
1102 ifelse([$2], , , [rm -f conftest*
1103 $2])
1104 fi
1105 rm -f conftest*])
1107 if test $elf = yes; then
1108 libc_cv_asm_underscores=no
1109 else
1110 if test $ac_cv_prog_cc_works = yes; then
1111 AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
1112 [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();],
1113 libc_cv_asm_underscores=yes,
1114 libc_cv_asm_underscores=no)])
1115 else
1116 AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
1117 [AC_CHECK_ASM_UNDERSCORE(libc_cv_asm_underscores=yes,
1118 libc_cv_asm_underscores=no)])
1119 fi
1120 fi
1121 if test $libc_cv_asm_underscores = no; then
1122 AC_DEFINE(NO_UNDERSCORES)
1123 fi
1125 if test $elf = yes; then
1126 libc_cv_weak_symbols=yes
1127 fi
1129 AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive,
1130 [dnl
1131 cat > conftest.s <<EOF
1132 ${libc_cv_dot_text}
1133 ${libc_cv_asm_global_directive} foo
1134 foo:
1135 .weak foo
1136 .weak bar; bar = foo
1137 EOF
1138 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
1139 libc_cv_asm_weak_directive=yes
1140 else
1141 libc_cv_asm_weak_directive=no
1142 fi
1143 rm -f conftest*])
1145 if test $libc_cv_asm_weak_directive = no; then
1146 AC_CACHE_CHECK(for assembler .weakext directive,
1147 libc_cv_asm_weakext_directive,
1148 [dnl
1149 cat > conftest.s <<EOF
1150 ${libc_cv_dot_text}
1151 ${libc_cv_asm_global_directive} foo
1152 foo:
1153 .weakext bar foo
1154 .weakext baz
1155 ${libc_cv_asm_global_directive} baz
1156 baz:
1157 EOF
1158 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
1159 libc_cv_asm_weakext_directive=yes
1160 else
1161 libc_cv_asm_weakext_directive=no
1162 fi
1163 rm -f conftest*])
1165 fi # no .weak
1167 if test $libc_cv_asm_weak_directive = yes; then
1168 AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE)
1169 elif test $libc_cv_asm_weakext_directive = yes; then
1170 AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE)
1171 fi
1173 dnl The standard hppa assembler uses `;' to start comments and `!'
1174 dnl as a line separator. CRIS uses `;' to start comments and `@' for
1175 dnl line separator.
1176 case "${host_cpu}-${host_os}" in
1177 cris*)
1178 libc_cv_asm_line_sep='@'
1179 AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep)
1180 ;;
1181 hppa*linux*)
1182 AC_CACHE_CHECK(for assembler line separator,
1183 libc_cv_asm_line_sep, [dnl
1184 cat > conftest.s <<EOF
1185 nop ; is_old_puffin
1186 EOF
1187 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
1188 libc_cv_asm_line_sep='!'
1189 else
1190 if test -z "$enable_hacker_mode"; then
1191 echo "*** You need a newer assembler to compile glibc"
1192 rm -f conftest*
1193 exit 1
1194 fi
1195 libc_cv_asm_line_sep=';'
1196 fi
1197 rm -f conftest*])
1198 AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep)
1199 ;;
1200 esac
1202 AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl
1203 cat > conftest.c <<\EOF
1204 _start () {}
1205 int __eh_pc;
1206 __throw () {}
1207 EOF
1208 dnl No \ in command here because it ends up inside ''.
1209 if AC_TRY_COMMAND([${CC-cc} $CFLAGS
1210 -nostdlib -nostartfiles -Wl,--no-whole-archive
1211 -o conftest conftest.c 1>&AC_FD_CC]); then
1212 libc_cv_ld_no_whole_archive=yes
1213 else
1214 libc_cv_ld_no_whole_archive=no
1215 fi
1216 rm -f conftest*])
1217 if test $libc_cv_ld_no_whole_archive = yes; then
1218 no_whole_archive=-Wl,--no-whole-archive
1219 fi
1220 AC_SUBST(no_whole_archive)dnl
1222 AC_CACHE_CHECK(for gcc -fexceptions, libc_cv_gcc_exceptions, [dnl
1223 cat > conftest.c <<\EOF
1224 _start () {}
1225 int __eh_pc;
1226 __throw () {}
1227 EOF
1228 dnl No \ in command here because it ends up inside ''.
1229 if AC_TRY_COMMAND([${CC-cc} $CFLAGS
1230 -nostdlib -nostartfiles -fexceptions
1231 -o conftest conftest.c 1>&AC_FD_CC]); then
1232 libc_cv_gcc_exceptions=yes
1233 else
1234 libc_cv_gcc_exceptions=no
1235 fi
1236 rm -f conftest*])
1237 if test $libc_cv_gcc_exceptions = yes; then
1238 exceptions=-fexceptions
1239 fi
1240 AC_SUBST(exceptions)dnl
1242 if test "$base_machine" = alpha ; then
1243 AC_CACHE_CHECK(for function ..ng prefix, libc_cv_gcc_alpha_ng_prefix, [dnl
1244 cat > conftest.c <<\EOF
1245 foo () { }
1246 EOF
1247 dnl
1248 if AC_TRY_COMMAND([${CC-cc} -S conftest.c -o - | fgrep "\$foo..ng" > /dev/null]);
1249 then
1250 libc_cv_gcc_alpha_ng_prefix=yes
1251 else
1252 libc_cv_gcc_alpha_ng_prefix=no
1253 fi
1254 rm -f conftest* ])
1255 if test $libc_cv_gcc_alpha_ng_prefix = yes ; then
1256 AC_DEFINE(ASM_ALPHA_NG_SYMBOL_PREFIX, "$")
1257 else
1258 AC_DEFINE(ASM_ALPHA_NG_SYMBOL_PREFIX, "")
1259 fi
1260 fi
1262 if test "$host_cpu" = powerpc ; then
1263 # Check for a bug present in at least versions 2.8.x of GCC
1264 # and versions 1.0.x of EGCS.
1265 AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl
1266 AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],,
1267 libc_cv_c_asmcr0_bug='no',
1268 libc_cv_c_asmcr0_bug='yes')])
1269 if test "$libc_cv_c_asmcr0_bug" != 'no'; then
1270 AC_DEFINE(BROKEN_PPC_ASM_CR0)
1271 fi
1272 fi
1274 AC_CACHE_CHECK(for DWARF2 unwind info support, libc_cv_gcc_dwarf2_unwind_info,
1275 [cat > conftest.c <<EOF
1276 #line __oline__ "configure"
1277 static char __EH_FRAME_BEGIN__[];
1278 _start ()
1279 {
1280 #ifdef CHECK__register_frame
1281 __register_frame (__EH_FRAME_BEGIN__);
1282 __deregister_frame (__EH_FRAME_BEGIN__);
1283 #endif
1284 #ifdef CHECK__register_frame_info
1285 __register_frame_info (__EH_FRAME_BEGIN__);
1286 __deregister_frame_info (__EH_FRAME_BEGIN__);
1287 #endif
1288 }
1289 int __eh_pc;
1290 __throw () {}
1291 /* FIXME: this is fragile. */
1292 malloc () {}
1293 strcmp () {}
1294 strlen () {}
1295 memcpy () {}
1296 memset () {}
1297 free () {}
1298 abort () {}
1299 __bzero () {}
1300 EOF
1301 dnl No \ in command here because it ends up inside ''.
1302 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -DCHECK__register_frame_info
1303 -nostdlib -nostartfiles
1304 -o conftest conftest.c -lgcc >&AC_FD_CC]); then
1305 libc_cv_gcc_dwarf2_unwind_info=static
1306 else
1307 libc_cv_gcc_dwarf2_unwind_info=no
1308 fi
1309 if test $libc_cv_gcc_dwarf2_unwind_info = no; then
1310 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -DCHECK__register_frame
1311 -nostdlib -nostartfiles
1312 -o conftest conftest.c -lgcc >&AC_FD_CC]); then
1313 libc_cv_gcc_dwarf2_unwind_info=yes
1314 else
1315 libc_cv_gcc_dwarf2_unwind_info=no
1316 fi
1317 fi
1318 rm -f conftest*])
1319 case $libc_cv_gcc_dwarf2_unwind_info in
1320 yes)
1321 AC_DEFINE(HAVE_DWARF2_UNWIND_INFO)
1322 ;;
1323 static)
1324 AC_DEFINE(HAVE_DWARF2_UNWIND_INFO)
1325 AC_DEFINE(HAVE_DWARF2_UNWIND_INFO_STATIC)
1326 ;;
1327 esac
1329 dnl Check whether compiler understands __builtin_expect.
1330 AC_CACHE_CHECK(for __builtin_expect, libc_cv_gcc_builtin_expect,
1331 [cat > conftest.c <<EOF
1332 #line __oline__ "configure"
1333 int foo (int a)
1334 {
1335 a = __builtin_expect (a, 10);
1336 return a == 10 ? 0 : 1;
1337 }
1338 EOF
1339 dnl No \ in command here because it ends up inside ''.
1340 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -nostdlib -nostartfiles
1341 -o conftest conftest.c -lgcc >&AC_FD_CC]); then
1342 libc_cv_gcc_builtin_expect=yes
1343 else
1344 libc_cv_gcc_builtin_expect=no
1345 fi
1346 rm -f conftest*])
1347 if test "$libc_cv_gcc_builtin_expect" = yes; then
1348 AC_DEFINE(HAVE_BUILTIN_EXPECT)
1349 fi
1351 dnl Check whether the compiler supports subtraction of local labels.
1352 AC_CACHE_CHECK(for local label subtraction, libc_cv_gcc_subtract_local_labels,
1353 [cat > conftest.c <<EOF
1354 changequote(,)dnl
1355 #line __oline__ "configure"
1356 int foo (int a)
1357 {
1358 static const int ar[] = { &&l1 - &&l1, &&l2 - &&l1 };
1359 void *p = &&l1 + ar[a];
1360 goto *p;
1361 l1:
1362 return 1;
1363 l2:
1364 return 2;
1365 }
1366 changequote([,])dnl
1367 EOF
1368 dnl No \ in command here because it ends up inside ''.
1369 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -nostdlib -nostartfiles
1370 -o conftest conftest.c -lgcc >&AC_FD_CC]); then
1371 libc_cv_gcc_subtract_local_labels=yes
1372 else
1373 libc_cv_gcc_subtract_local_labels=no
1374 fi
1375 rm -f conftest*])
1376 if test "$libc_cv_gcc_subtract_local_labels" = yes; then
1377 AC_DEFINE(HAVE_SUBTRACT_LOCAL_LABELS)
1378 fi
1380 dnl Check whether we have the gd library available.
1381 AC_MSG_CHECKING(for libgd)
1382 if test "$with_gd" != "no"; then
1383 old_CFLAGS="$CFLAGS"
1384 CFLAGS="$CFLAGS $libgd_include"
1385 old_LDFLAGS="$LDFLAGS"
1386 LDFLAGS="$LDFLAGS $libgd_ldflags"
1387 old_LIBS="$LIBS"
1388 LIBS="$LIBS -lgd -lpng -lz -lm"
1389 AC_TRY_LINK([#include <gd.h>], [gdImagePng (0, 0)], LIBGD=yes, LIBGD=no)
1390 CFLAGS="$old_CFLAGS"
1391 LDFLAGS="$old_LDFLAGS"
1392 LIBS="$old_LIBS"
1393 else
1394 LIBGD=no
1395 fi
1396 AC_MSG_RESULT($LIBGD)
1397 AC_SUBST(LIBGD)
1399 dnl check for the size of 'long double'.
1400 AC_CHECK_SIZEOF(long double, 0)
1401 sizeof_long_double=$ac_cv_sizeof_long_double
1402 AC_SUBST(sizeof_long_double)
1404 ### End of automated tests.
1405 ### Now run sysdeps configure fragments.
1407 # sysdeps configure fragments may set these with files to be linked below.
1408 libc_link_dests=
1409 libc_link_sources=
1411 # They also can set these variables.
1412 use_ldconfig=no
1413 ldd_rewrite_script=no
1414 libc_cv_sysconfdir=$sysconfdir
1416 # Iterate over all the sysdep directories we will use, running their
1417 # configure fragments, and looking for a uname implementation.
1418 uname=
1419 for dir in $sysnames; do
1420 case $dir in
1421 /*) dest=$dir ;;
1422 *) dest=$srcdir/$dir ;;
1423 esac
1424 if test -r $dest/configure; then
1425 AC_MSG_RESULT(running configure fragment for $dest)
1426 . $dest/configure
1427 fi
1428 [
1429 if test -z "$uname"; then
1430 if test -r $dest/uname.c ||
1431 test -r $dest/uname.S ||
1432 { test -r $dest/syscalls.list &&
1433 grep '^uname[ ]' $dest/syscalls.list >/dev/null; }; then
1434 uname=$dir
1435 fi
1436 fi
1437 ]dnl
1438 done
1440 AC_LINK_FILES(`echo $libc_link_sources`, `echo $libc_link_dests`)
1442 # If we will use the generic uname implementation, we must figure out what
1443 # it will say by examining the system, and write the results in config-name.h.
1444 if test "$uname" = "sysdeps/generic"; then
1446 changequote(,)dnl
1447 uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'`
1448 changequote([,])dnl
1449 if test $uname_sysname != $config_os; then
1450 config_release=`echo $config_os | sed s/$uname_sysname//`
1451 fi
1452 dnl
1453 AC_DEFUN(LIBC_KERNEL_ID, [dnl
1454 if test -r /vmunix; then
1455 kernel_id=`strings /vmunix | grep UNIX`
1456 elif test -r /dynix; then
1457 kernel_id=`strings /dynix | grep DYNIX`
1458 else
1459 kernel_id=
1460 fi
1461 ])dnl
1463 AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl
1464 AC_REQUIRE([LIBC_KERNEL_ID])dnl
1465 changequote(,)dnl
1466 kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'`
1467 changequote([,])dnl
1468 if test x`echo "$config_release" | sed "s/^$kernel_release//"` \
1469 != x$config_release; then
1470 # The configuration release is a substring of the kernel release.
1471 libc_cv_uname_release=$kernel_release
1472 elif test x$config_release != x; then
1473 libc_cv_uname_release=$config_release
1474 elif test x$kernel_release != x; then
1475 libc_cv_uname_release=$kernel_release
1476 else
1477 libc_cv_uname_release=unknown
1478 fi])
1479 uname_release="$libc_cv_uname_release"
1481 AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl
1482 AC_REQUIRE([LIBC_KERNEL_ID])dnl
1483 changequote(,)dnl
1484 kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'`
1485 changequote([,])dnl
1486 if test -n "$kernel_version"; then
1487 libc_cv_uname_version="$kernel_version"
1488 else
1489 libc_cv_uname_version=unknown
1490 fi])
1491 uname_version="$libc_cv_uname_version"
1493 AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl
1494 config_uname=config-name.h:config-name.in
1495 else
1496 # For non-generic uname, we don't need to create config-name.h at all.
1497 config_uname=
1498 fi
1500 AC_MSG_CHECKING(stdio selection)
1501 AC_SUBST(stdio)
1502 case $stdio in
1503 libio) AC_DEFINE(USE_IN_LIBIO) ;;
1504 default) stdio=stdio ;;
1505 esac
1506 AC_MSG_RESULT($stdio)
1508 # Test for old glibc 2.0.x headers so that they can be removed properly
1509 # Search only in includedir.
1510 AC_MSG_CHECKING(for old glibc 2.0.x headers)
1511 if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h"
1512 then
1513 old_glibc_headers=yes
1514 else
1515 old_glibc_headers=no
1516 fi
1517 AC_MSG_RESULT($old_glibc_headers)
1518 if test ${old_glibc_headers} = yes; then
1519 AC_MSG_WARN(*** During \"make install\" old headers from glibc 2.0.x will)
1520 AC_MSG_WARN(*** be removed.)
1521 fi
1522 AC_SUBST(old_glibc_headers)
1524 AC_SUBST(libc_cv_slibdir)
1525 AC_SUBST(libc_cv_localedir)
1526 AC_SUBST(libc_cv_sysconfdir)
1527 AC_SUBST(libc_cv_rootsbindir)
1529 AC_SUBST(use_ldconfig)
1530 AC_SUBST(ldd_rewrite_script)
1532 AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf) AC_SUBST(xcoff)
1533 if test $gnu_ld = yes; then
1534 AC_DEFINE(HAVE_GNU_LD)
1535 fi
1536 if test $gnu_as = yes; then
1537 AC_DEFINE(HAVE_GNU_AS)
1538 fi
1539 if test $elf = yes; then
1540 AC_DEFINE(HAVE_ELF)
1541 fi
1542 if test $xcoff = yes; then
1543 AC_DEFINE(HAVE_XCOFF)
1544 fi
1546 AC_SUBST(static)
1547 AC_SUBST(shared)
1548 if test $shared = default; then
1549 if test $gnu_ld = yes; then
1550 shared=$elf
1551 else
1552 # For now we do not assume shared libs are available. In future more
1553 # tests might become available.
1554 shared=no
1555 fi
1556 fi
1558 AC_CACHE_CHECK([whether -fPIC is default], pic_default,
1559 [pic_default=yes
1560 cat > conftest.c <<EOF
1561 #if defined __PIC__ || defined __pic__ || defined PIC || defined pic
1562 # error PIC is default.
1563 #endif
1564 EOF
1565 if eval "${CC-cc} -S conftest.c 2>&AC_FD_CC 1>&AC_FD_CC"; then
1566 pic_default=no
1567 fi
1568 rm -f conftest.*])
1569 AC_SUBST(pic_default)
1571 AC_SUBST(profile)
1572 AC_SUBST(omitfp)
1573 AC_SUBST(bounded)
1574 AC_SUBST(static_nss)
1575 AC_SUBST(nopic_initfini)
1577 AC_SUBST(DEFINES)
1579 case "$add_ons" in
1580 *door*) linux_doors=yes ;;
1581 *) linux_doors=no ;;
1582 esac
1583 AC_SUBST(linux_doors)
1585 if test "`(cd $srcdir; pwd)`" = "`pwd`"; then
1586 config_makefile=
1587 else
1588 config_makefile=Makefile
1589 fi
1591 VERSION=`sed -n -e 's/^#define VERSION "\([^"]*\)"/\1/p' < $srcdir/version.h`
1592 RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h`
1593 AC_SUBST(VERSION)
1594 AC_SUBST(RELEASE)
1596 AC_OUTPUT(config.make glibcbug ${config_makefile} ${config_uname}, [
1597 case $CONFIG_FILES in *config.make*)
1598 echo "$config_vars" >> config.make;;
1599 esac
1600 test -d bits || mkdir bits], [config_vars='$config_vars'])