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1 | Dnl Process this file with autoconf to produce a configure script. | |
2 | AC_REVISION([$CVSid$]) | |
3 | AC_PREREQ(2.10)dnl dnl Minimum Autoconf version required. | |
4 | AC_INIT(features.h) | |
5 | AC_CONFIG_HEADER(config.h) | |
6 | ||
7 | # This will get text that should go into config.make. | |
8 | config_vars= | |
9 | ||
10 | # Check for a --with-gmp argument and set gmp-srcdir in config.make. | |
11 | AC_ARG_WITH(gmp, dnl | |
12 | --with-gmp=DIRECTORY find GMP source code in DIRECTORY (not needed), | |
13 | [dnl | |
14 | case "$with_gmp" in | |
15 | yes) AC_MSG_ERROR(--with-gmp requires an argument; use --with-gmp=DIRECTORY) ;; | |
16 | ''|no) ;; | |
17 | *) config_vars="$config_vars | |
18 | gmp-srcdir = $withval" ;; | |
19 | esac | |
20 | ]) | |
21 | # Check for a --with-gettext argument and set gettext-srcdir in config.make. | |
22 | AC_ARG_WITH(gettext, dnl | |
23 | --with-gettext=DIR find GNU gettext source code in DIR (not needed), | |
24 | [dnl | |
25 | case "$with_gettext" in | |
26 | yes) | |
27 | AC_MSG_ERROR(--with-gettext requires an argument; use --with-gettext=DIR) ;; | |
28 | ''|no) ;; | |
29 | *) | |
30 | config_vars="$config_vars | |
31 | gettext-srcdir = $withval" ;; | |
32 | esac | |
33 | ]) | |
34 | ||
35 | dnl Arguments to specify presence of other packages/features. | |
36 | AC_ARG_WITH(fp, dnl | |
37 | --with-fp if using floating-point hardware [default=yes], | |
38 | with_fp=$withval, with_fp=yes) | |
39 | AC_ARG_WITH(gnu-binutils, dnl | |
40 | --with-gnu-binutils if using GNU binutils (as and ld), | |
41 | gnu_binutils=$withval, gnu_binutils=no) | |
42 | AC_ARG_WITH(gnu-ld, dnl | |
43 | --with-gnu-ld if using GNU ld (in the binutils package), | |
44 | gnu_ld=$withval, gnu_ld=no) | |
45 | AC_ARG_WITH(gnu-as, dnl | |
46 | --with-gnu-as if using GNU as (in the binutils package), | |
47 | gnu_as=$withval, gnu_as=no) | |
48 | test $gnu_binutils = yes && gnu_as=yes gnu_ld=yes | |
49 | AC_ARG_WITH(elf, dnl | |
50 | --with-elf if using the ELF object format, | |
51 | elf=$withval, elf=no) | |
52 | ||
53 | AC_ARG_ENABLE(libio, dnl | |
54 | [ --enable-libio build in GNU libio instead of GNU stdio], | |
55 | [if test $enableval = yes; then | |
56 | stdio=libio | |
57 | else | |
58 | stdio=stdio | |
59 | fi], | |
60 | stdio=default) | |
61 | ||
62 | dnl Arguments to enable or disable building the shared, profiled, and | |
63 | dnl -fomit-frame-pointer libraries. | |
64 | AC_ARG_ENABLE(shared, dnl | |
65 | [ --enable-shared build shared library [default=yes if GNU ld & ELF]], | |
66 | shared=$enableval, shared=default) | |
67 | AC_ARG_ENABLE(profile, dnl | |
68 | [ --enable-profile build profiled library [default=yes]], | |
69 | profile=$enableval, profile=yes) | |
70 | AC_ARG_ENABLE(omitfp, dnl | |
71 | [ --enable-omitfp build undebuggable optimized library [default=no]], | |
72 | omitfp=$enableval, omitfp=no) | |
73 | ||
74 | dnl Generic infrastructure for drop-in additions to libc. | |
75 | AC_ARG_ENABLE(add-ons, dnl | |
76 | [ --enable-add-ons=DIR... configure and build named extra directories], | |
77 | [add_ons=`echo "$enableval" | sed 's/,/ /g'`], | |
78 | [add_ons=]) | |
79 | AC_CONFIG_SUBDIRS($add_ons) | |
80 | ||
81 | AC_CANONICAL_HOST | |
82 | # We keep the original values in `$config_*' and never modify them, so we | |
83 | # can write them unchanged into config.make. Everything else uses | |
84 | # $machine, $vendor, and $os, and changes them whenever convenient. | |
85 | config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os | |
86 | ||
87 | # Some configurations imply other options. | |
88 | case "$host_os" in | |
89 | gnu* | linux* | bsd4.4* | netbsd* | freebsd*) | |
90 | # These systems always use GNU tools. | |
91 | gnu_ld=yes gnu_as=yes ;; | |
92 | esac | |
93 | case "$host_os" in | |
94 | linux*ecoff*) | |
95 | ;; | |
96 | gnu* | linux* | sysv4* | solaris2*) | |
97 | # These systems (almost) always use the ELF format. | |
98 | elf=yes | |
99 | ;; | |
100 | esac | |
101 | ||
102 | machine=$config_machine | |
103 | vendor=$config_vendor | |
104 | os=$config_os | |
105 | ||
106 | dnl We need to use [ and ] for other purposes for a while now. | |
107 | changequote(,)dnl | |
108 | # Expand the configuration machine name into a subdirectory by architecture | |
109 | # type and particular chip. | |
110 | case "$machine" in | |
111 | a29k | am29000) base_machine=a29k machine=a29k ;; | |
112 | alpha*) base_machine=alpha machine=alpha/$machine ;; | |
113 | hppa*) base_machine=hppa machine=hppa/$machine ;; | |
114 | i[3456]86) base_machine=i386 machine=i386/$machine ;; | |
115 | m680?0) base_machine=m68k machine=m68k/$machine ;; | |
116 | m68k) base_machine=m68k machine=m68k/m68020 ;; | |
117 | m88???) base_machine=m88k machine=m88k/$machine ;; | |
118 | m88k) base_machine=m88k machine=m88k/m88100 ;; | |
119 | mips*) base_machine=mips machine=mips/$machine ;; | |
120 | mips64*) base_machine=mips64 machine=mips/mips64/$machine ;; | |
121 | sparc[6789]) base_machine=sparc machine=sparc/$machine ;; | |
122 | supersparc) base_machine=sparc machine=sparc/sparc8 ;; | |
123 | esac | |
124 | changequote([,])dnl | |
125 | AC_SUBST(base_machine) | |
126 | ||
127 | # Compute the list of sysdep directories for this configuration. | |
128 | # This can take a while to compute. | |
129 | sysdep_dir=$srcdir/sysdeps | |
130 | AC_MSG_CHECKING(sysdep dirs) | |
131 | dnl We need to use [ and ] for other purposes for a while now. | |
132 | changequote(,)dnl | |
133 | # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1. | |
134 | os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`" | |
135 | ||
136 | case "$os" in | |
137 | gnu*) | |
138 | base_os=mach/hurd ;; | |
139 | netbsd* | 386bsd* | freebsd* | bsdi*) | |
140 | base_os=unix/bsd/bsd4.4 ;; | |
141 | osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*) | |
142 | base_os=unix/bsd ;; | |
143 | sysv* | isc* | esix* | sco* | minix* | irix4* | linux*) | |
144 | base_os=unix/sysv ;; | |
145 | solaris[2-9]*) | |
146 | base_os=unix/sysv/sysv4 ;; | |
147 | none) | |
148 | base_os=standalone ;; | |
149 | *) | |
150 | base_os='' ;; | |
151 | esac | |
152 | ||
153 | # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos. | |
154 | tail=$os | |
155 | ostry=$os | |
156 | while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do | |
157 | ostry="$ostry /$o" | |
158 | tail=$o | |
159 | done | |
160 | o=`echo $tail | sed 's/[0-9]*$//'` | |
161 | if test $o != $tail; then | |
162 | ostry="$ostry /$o" | |
163 | fi | |
164 | ||
165 | # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix. | |
166 | base= | |
167 | tail=$base_os | |
168 | while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do | |
169 | set $b | |
170 | base="$base /$1" | |
171 | tail="$2" | |
172 | done | |
173 | ||
174 | # For sparc/sparc9, try sparc/sparc9 and then sparc. | |
175 | mach= | |
176 | tail=$machine | |
177 | while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do | |
178 | set $m | |
179 | # Prepend the machine's FPU directory unless --without-fp. | |
180 | if test "$with_fp" = yes; then | |
181 | mach="$mach /$1/fpu" | |
182 | fi | |
183 | mach="$mach /$1" | |
184 | tail="$2" | |
185 | done | |
186 | ||
187 | dnl We are done with glob and regexp uses of [ and ]; return to autoconf. | |
188 | changequote([,])dnl | |
189 | ||
190 | # Find what sysdep directories exist. | |
191 | sysnames= | |
192 | for b in $base ''; do | |
193 | for m0 in $mach ''; do | |
194 | for v in /$vendor ''; do | |
195 | for o in /$ostry ''; do | |
196 | for m in $mach ''; do | |
197 | try="$m0$b$v$o$m" | |
198 | test -n "$enable_debug_configure" && echo "$0 [DEBUG]: try $try" >&2 | |
199 | if test -d $sysdep_dir$try; then | |
200 | sysnames="$sysnames $try" | |
201 | { test -n "$o" || test -n "$b"; } && os_used=t | |
202 | { test -n "$m" || test -n "$m0"; } && machine_used=t | |
203 | fi | |
204 | done | |
205 | done | |
206 | done | |
207 | done | |
208 | done | |
209 | ||
210 | if test -z "$os_used" && test "$os" != none; then | |
211 | AC_MSG_ERROR(Operating system $os is not supported.) | |
212 | fi | |
213 | if test -z "$machine_used" && test "$machine" != none; then | |
214 | AC_MSG_ERROR(The $machine is not supported.) | |
215 | fi | |
216 | ||
217 | # We have now validated the configuration. | |
218 | ||
219 | ||
220 | # If using ELF, look for an `elf' subdirectory of each machine directory. | |
221 | # We prepend these rather than inserting them whereever the machine appears | |
222 | # because things specified by the machine's ELF ABI should override | |
223 | # OS-specific things, and should always be the same for any OS on the | |
224 | # machine (otherwise what's the point of an ABI?). | |
225 | if test "$elf" = yes; then | |
226 | elf_dirs= | |
227 | for m in $mach; do | |
228 | if test -d $sysdep_dir$m/elf; then | |
229 | elf_dirs="$elf_dirs $m/elf" | |
230 | fi | |
231 | done | |
232 | sysnames="`echo $elf_dirs | sed -e 's,^/,,' -e 's, /,,g'` $sysnames" | |
233 | fi | |
234 | ||
235 | ||
236 | # Remove the leading slashes. | |
237 | sysnames="`echo $sysnames | sed -e 's@^/@@' -e 's@ /@ @g'`" | |
238 | ||
239 | ||
240 | # Expand the list of system names into a full list of directories | |
241 | # from each element's parent name and Implies file (if present). | |
242 | set $sysnames | |
243 | names= | |
244 | while test $# -gt 0; do | |
245 | name=$1 | |
246 | shift | |
247 | ||
248 | case " $names " in *" $name "*) | |
249 | # Already in the list. | |
250 | continue | |
251 | esac | |
252 | ||
253 | # Report each name as we discover it, so there is no long pause in output. | |
254 | echo $ac_n "$name $ac_c" >&AC_FD_MSG | |
255 | ||
256 | if test -f $sysdep_dir/$name/Implies; then | |
257 | # Collect more names from the `Implies' file (removing comments). | |
258 | implied="`sed 's/#.*$//' < $sysdep_dir/$name/Implies`" | |
259 | for x in $implied; do | |
260 | test -d $sysdep_dir/$x || { | |
261 | AC_MSG_WARN(sysdeps/$name/Implies specifies nonexistent $x) | |
262 | } | |
263 | done | |
264 | else | |
265 | implied= | |
266 | fi | |
267 | ||
268 | # Add NAME to the list of names. | |
269 | names="$names $name" | |
270 | ||
271 | # Find the parent of NAME, using the empty string if it has none. | |
272 | changequote(,)dnl | |
273 | parent="`echo $name | sed -n -e '/\//!q' -e 's=/[^/]*$==p'`" | |
274 | changequote([,])dnl | |
275 | ||
276 | # Add the names implied by NAME, and NAME's parent (if it has one), to | |
277 | # the list of names to be processed (the argument list). We prepend the | |
278 | # implied names to the list and append the parent. We want implied | |
279 | # directories to come before further directories inferred from the | |
280 | # configuration components; this ensures that for sysv4, unix/common | |
281 | # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*) | |
282 | # after sysv4). | |
283 | sysnames="`echo $implied $* $parent`" | |
284 | test -n "$sysnames" && set $sysnames | |
285 | done | |
286 | ||
287 | # Add the default directories. | |
288 | sysnames="$names generic stub" | |
289 | AC_SUBST(sysnames) | |
290 | # The other names were emitted during the scan. | |
291 | AC_MSG_RESULT(generic stub) | |
292 | ||
293 | ||
294 | ### Locate tools. | |
295 | ||
296 | AC_PROG_INSTALL | |
297 | if test "$INSTALL" = "${srcdir}/install-sh"; then | |
298 | # The makefiles need to use a different form to find it in $srcdir. | |
299 | INSTALL='$(..)./install-sh' | |
300 | fi | |
301 | AC_PROG_LN_S | |
302 | AC_CHECK_PROGS(MSGFMT, msgfmt gmsgfmt, :) | |
303 | ||
304 | AC_CHECK_TOOL(CC, gcc) | |
305 | if test $host != $build; then | |
306 | AC_CHECK_PROG(BUILD_CC, gcc cc) | |
307 | fi | |
308 | AC_PROG_CPP | |
309 | AC_CHECK_TOOL(AR, ar) | |
310 | AC_CHECK_TOOL(RANLIB, ranlib, :) | |
311 | ||
312 | AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl | |
313 | echo '#include <stddef.h> | |
314 | FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c | |
315 | if eval "$ac_cpp conftest.c 2>/dev/null" \ | |
316 | | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then | |
317 | libc_cv_signed_size_t=no | |
318 | else | |
319 | libc_cv_signed_size_t=yes | |
320 | fi | |
321 | rm -f conftest*]) | |
322 | if test $libc_cv_signed_size_t = yes; then | |
323 | dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings. | |
324 | cat >> confdefs.h <<\EOF | |
325 | #undef __SIZE_TYPE__ | |
326 | #define __SIZE_TYPE__ unsigned | |
327 | EOF | |
328 | fi | |
329 | ||
330 | AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl | |
331 | AC_TRY_COMPILE(dnl | |
332 | [#define __need_size_t | |
333 | #define __need_wchar_t | |
334 | #include <stddef.h> | |
335 | #define __need_NULL | |
336 | #include <stddef.h>], [size_t size; wchar_t wchar; | |
337 | #ifdef offsetof | |
338 | #error stddef.h ignored __need_* | |
339 | #endif | |
340 | if (&size == NULL || &wchar == NULL) abort ();], | |
341 | libc_cv_friendly_stddef=yes, | |
342 | libc_cv_friendly_stddef=no)]) | |
343 | if test $libc_cv_friendly_stddef = yes; then | |
344 | config_vars="$config_vars | |
345 | override stddef.h = # The installed <stddef.h> seems to be libc-friendly." | |
346 | fi | |
347 | ||
348 | AC_CACHE_CHECK(whether we need to use -P to assemble .S files, | |
349 | libc_cv_need_minus_P, [dnl | |
350 | cat > conftest.S <<EOF | |
351 | #include "confdefs.h" | |
352 | /* Nothing whatsoever. */ | |
353 | EOF | |
354 | if ${CC-cc} $CFLAGS -c conftest.S 2>/dev/null; then | |
355 | libc_cv_need_minus_P=no | |
356 | else | |
357 | libc_cv_need_minus_P=yes | |
358 | fi | |
359 | rm -f conftest*]) | |
360 | if test $libc_cv_need_minus_P = yes; then | |
361 | config_vars="$config_vars | |
362 | asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives." | |
363 | fi | |
364 | ||
365 | AC_CACHE_CHECK(for assembler global-symbol directive, | |
366 | libc_cv_asm_global_directive, [dnl | |
367 | libc_cv_asm_global_directive=UNKNOWN | |
368 | for ac_globl in .globl .global; do | |
369 | cat > conftest.s <<EOF | |
370 | .text | |
371 | ${ac_globl} foo | |
372 | foo: .long 0 | |
373 | EOF | |
374 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then | |
375 | libc_cv_asm_global_directive=${ac_globl} | |
376 | fi | |
377 | rm -f conftest* | |
378 | test $libc_cv_asm_global_directive != UNKNOWN && break | |
379 | done]) | |
380 | if test $libc_cv_asm_global_directive = UNKNOWN; then | |
381 | AC_MSG_ERROR(cannot determine asm global directive) | |
382 | else | |
383 | AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive}) | |
384 | fi | |
385 | ||
386 | AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl | |
387 | cat > conftest.s <<EOF | |
388 | .text | |
389 | foo: .long 0 | |
390 | .set glibc_conftest_frobozz,foo | |
391 | $libc_cv_asm_global_directive glibc_conftest_frobozz | |
392 | EOF | |
393 | # The alpha-dec-osf1 assembler gives only a warning for `.set' | |
394 | # (but it doesn't work), so we must do a linking check to be sure. | |
395 | cat > conftest1.c <<\EOF | |
396 | extern int glibc_conftest_frobozz; | |
397 | main () { printf ("%d\n", glibc_conftest_frobozz); } | |
398 | EOF | |
399 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
400 | -o conftest conftest.s conftest1.c 1>&AC_FD_CC 2>&AC_FD_CC; then | |
401 | libc_cv_asm_set_directive=yes | |
402 | else | |
403 | libc_cv_asm_set_directive=no | |
404 | fi | |
405 | rm -f conftest*]) | |
406 | if test $libc_cv_asm_set_directive = yes; then | |
407 | AC_DEFINE(HAVE_ASM_SET_DIRECTIVE) | |
408 | fi | |
409 | ||
410 | if test $elf != yes; then | |
411 | AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini, | |
412 | [AC_TRY_COMPILE(, [asm (".section .init"); | |
413 | asm (".section .fini"); | |
414 | asm (".text");], | |
415 | libc_cv_have_initfini=yes, | |
416 | libc_cv_have_initfini=no)]) | |
417 | AC_SUBST(libc_cv_have_initfini)dnl | |
418 | if test $libc_cv_have_initfini = yes; then | |
419 | AC_DEFINE(HAVE_INITFINI) | |
420 | fi | |
421 | fi | |
422 | ||
423 | if test $elf = yes; then | |
424 | libc_cv_asm_underscores=no | |
425 | else | |
426 | AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores, | |
427 | [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();], | |
428 | libc_cv_asm_underscores=yes, | |
429 | libc_cv_asm_underscores=no)]) | |
430 | fi | |
431 | if test $libc_cv_asm_underscores = no; then | |
432 | AC_DEFINE(NO_UNDERSCORES) | |
433 | fi | |
434 | ||
435 | if test $elf = yes; then | |
436 | libc_cv_weak_symbols=yes | |
437 | libc_cv_asm_weak_directive=yes | |
438 | libc_cv_asm_weakext_directive=no | |
439 | else | |
440 | AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive, | |
441 | [dnl | |
442 | cat > conftest.s <<EOF | |
443 | .text | |
444 | ${libc_cv_asm_global_directive} foo | |
445 | foo: .long 0 | |
446 | .weak foo | |
447 | .weak bar; bar = foo | |
448 | EOF | |
449 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then | |
450 | libc_cv_asm_weak_directive=yes | |
451 | else | |
452 | libc_cv_asm_weak_directive=no | |
453 | fi | |
454 | rm -f conftest*]) | |
455 | ||
456 | if test $libc_cv_asm_weak_directive = no; then | |
457 | AC_CACHE_CHECK(for assembler .weakext directive, | |
458 | libc_cv_asm_weakext_directive, | |
459 | [dnl | |
460 | cat > conftest.s <<EOF | |
461 | .text | |
462 | ${libc_cv_asm_global_directive} foo | |
463 | foo: .long 0 | |
464 | .weakext foo | |
465 | .weakext foo, bar | |
466 | EOF | |
467 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then | |
468 | libc_cv_asm_weakext_directive=yes | |
469 | else | |
470 | libc_cv_asm_weakext_directive=no | |
471 | fi | |
472 | rm -f conftest*]) | |
473 | ||
474 | fi # no .weak | |
475 | fi # not ELF | |
476 | ||
477 | if test $libc_cv_asm_weak_directive = yes; then | |
478 | AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE) | |
479 | elif test $libc_cv_asm_weakext_directive = yes; then | |
480 | AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE) | |
481 | fi | |
482 | ||
483 | AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl | |
484 | cat > conftest.c <<\EOF | |
485 | _start () {} | |
486 | int __eh_pc; | |
487 | __throw () {} | |
488 | EOF | |
489 | dnl No \ in command here because it ends up inside ''. | |
490 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS | |
491 | -nostdlib -nostartfiles -Wl,--no-whole-archive | |
492 | -o conftest conftest.c]); then | |
493 | libc_cv_ld_no_whole_archive=yes | |
494 | else | |
495 | libc_cv_ld_no_whole_archive=no | |
496 | fi | |
497 | rm -f conftest*]) | |
498 | AC_SUBST(libc_cv_ld_no_whole_archive)dnl | |
499 | ||
500 | ### End of automated tests. | |
501 | ### Now run sysdeps configure fragments. | |
502 | ||
503 | # sysdeps configure fragments may set these with files to be linked below. | |
504 | libc_link_dests= | |
505 | libc_link_sources= | |
506 | ||
507 | # Iterate over all the sysdep directories we will use, running their | |
508 | # configure fragments, and looking for a uname implementation. | |
509 | uname= | |
510 | for dir in $sysnames; do | |
511 | if test -r $sysdep_dir/$dir/configure; then | |
512 | AC_MSG_RESULT(running configure fragment for $dir) | |
513 | . $sysdep_dir/$dir/configure | |
514 | fi | |
515 | [ | |
516 | if test -z "$uname"; then | |
517 | if test -r $sysdep_dir/$dir/uname.c || | |
518 | test -r $sysdep_dir/$dir/uname.S || | |
519 | { test -r $sysdep_dir/$dir/syscalls.list && | |
520 | grep '^uname[ ]' $sysdep_dir/$dir/syscalls.list >/dev/null; }; then | |
521 | uname=$dir | |
522 | fi | |
523 | fi | |
524 | ]dnl | |
525 | done | |
526 | ||
527 | AC_LINK_FILES(`echo $libc_link_sources`, `echo $libc_link_dests`) | |
528 | ||
529 | # If we will use the generic uname implementation, we must figure out what | |
530 | # it will say by examining the system, and write the results in config-name.h. | |
531 | if test "$uname" = generic; then | |
532 | ||
533 | changequote(,)dnl | |
534 | uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'` | |
535 | changequote([,])dnl | |
536 | if test $uname_sysname != $config_os; then | |
537 | config_release=`echo $config_os | sed s/$uname_sysname//` | |
538 | fi | |
539 | dnl | |
540 | AC_DEFUN(LIBC_KERNEL_ID, [dnl | |
541 | if test -r /vmunix; then | |
542 | kernel_id=`strings /vmunix | grep UNIX` | |
543 | elif test -r /dynix; then | |
544 | kernel_id=`strings /dynix | grep DYNIX` | |
545 | else | |
546 | kernel_id= | |
547 | fi | |
548 | ])dnl | |
549 | ||
550 | AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl | |
551 | AC_REQUIRE([LIBC_KERNEL_ID])dnl | |
552 | changequote(,)dnl | |
553 | kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'` | |
554 | changequote([,])dnl | |
555 | if test x`echo "$config_release" | sed "s/^$kernel_release//"` \ | |
556 | != x$config_release; then | |
557 | # The configuration release is a substring of the kernel release. | |
558 | libc_cv_uname_release=$kernel_release | |
559 | elif test x$config_release != x; then | |
560 | libc_cv_uname_release=$config_release | |
561 | elif test x$kernel_release != x; then | |
562 | libc_cv_uname_release=$kernel_release | |
563 | else | |
564 | libc_cv_uname_release=unknown | |
565 | fi]) | |
566 | uname_release="$libc_cv_uname_release" | |
567 | ||
568 | AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl | |
569 | AC_REQUIRE([LIBC_KERNEL_ID])dnl | |
570 | changequote(,)dnl | |
571 | kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'` | |
572 | changequote([,])dnl | |
573 | if test -n "$kernel_version"; then | |
574 | libc_cv_uname_version="$kernel_version" | |
575 | else | |
576 | libc_cv_uname_version=unknown | |
577 | fi]) | |
578 | uname_version="$libc_cv_uname_version" | |
579 | ||
580 | AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl | |
581 | config_uname=config-name.h:config-name.in | |
582 | else | |
583 | # For non-generic uname, we don't need to create config-name.h at all. | |
584 | config_uname= | |
585 | fi | |
586 | ||
587 | AC_MSG_CHECKING(stdio selection) | |
588 | AC_SUBST(stdio) | |
589 | case $stdio in | |
590 | libio) AC_DEFINE(USE_IN_LIBIO) ;; | |
591 | default) stdio=stdio ;; | |
592 | esac | |
593 | AC_MSG_RESULT($stdio) | |
594 | ||
595 | AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf) | |
596 | if test $gnu_ld = yes; then | |
597 | AC_DEFINE(HAVE_GNU_LD) | |
598 | fi | |
599 | if test $gnu_as = yes; then | |
600 | AC_DEFINE(HAVE_GNU_AS) | |
601 | fi | |
602 | if test $elf = yes; then | |
603 | AC_DEFINE(HAVE_ELF) | |
604 | fi | |
605 | ||
606 | AC_SUBST(shared) | |
607 | if test $shared = default; then | |
608 | if test $gnu_ld = yes; then | |
609 | shared=$elf | |
610 | fi | |
611 | fi | |
612 | AC_SUBST(profile) | |
613 | AC_SUBST(omitfp) | |
614 | ||
615 | if test "`(cd $srcdir; pwd)`" = "`pwd`"; then | |
616 | config_makefile= | |
617 | else | |
618 | config_makefile=Makefile | |
619 | fi | |
620 | ||
621 | AC_OUTPUT(config.make ${config_makefile} ${config_uname}, , | |
622 | [echo '$config_vars' >> config.make]) |