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re PR rtl-optimization/47698 (CMOV accessing volatile memory with read side effect)
[thirdparty/gcc.git] / libstdc++-v3 / acinclude.m4
CommitLineData
92eabea2
PE		 1dnl
2dnl GLIBCXX_CONDITIONAL (NAME, SHELL-TEST)
3dnl
4dnl Exactly like AM_CONDITIONAL, but delays evaluation of the test until the
5dnl end of configure. This lets tested variables be reassigned, and the
6dnl conditional will depend on the final state of the variable. For a simple
7dnl example of why this is needed, see GLIBCXX_ENABLE_HOSTED.
8dnl
9m4_define([_m4_divert(glibcxx_diversion)], 8000)dnl
f214923c 10AC_DEFUN([GLIBCXX_CONDITIONAL], [dnl
92eabea2
PE		 11 m4_divert_text([glibcxx_diversion],dnl
12 AM_CONDITIONAL([$1],[$2])
13 )dnl
14])dnl
f214923c 15AC_DEFUN([GLIBCXX_EVALUATE_CONDITIONALS], [m4_undivert([glibcxx_diversion])])dnl
92eabea2
PE		 16
17
ff66d28f
PE		 18dnl
19dnl Check to see what architecture and operating system we are compiling
20dnl for. Also, if architecture- or OS-specific flags are required for
21dnl compilation, pick them up here.
22dnl
f214923c 23AC_DEFUN([GLIBCXX_CHECK_HOST], [
ff66d28f 24 . $glibcxx_srcdir/configure.host
f214923c
BK		 25 AC_MSG_NOTICE([CPU config directory is $cpu_include_dir])
26 AC_MSG_NOTICE([OS config directory is $os_include_dir])
ff66d28f
PE		 27])
28
ff66d28f
PE		 29dnl
30dnl Initialize the rest of the library configury. At this point we have
31dnl variables like $host.
aebb8c22 32dnl
ff66d28f 33dnl Sets:
82ba99d5 34dnl SUBDIRS
ff66d28f
PE		 35dnl Substs:
36dnl glibcxx_builddir (absolute path)
37dnl glibcxx_srcdir (absolute path)
5d1c8e77 38dnl toplevel_builddir (absolute path)
ff66d28f
PE		 39dnl toplevel_srcdir (absolute path)
40dnl with_cross_host
41dnl with_newlib
42dnl with_target_subdir
43dnl plus
44dnl - the variables in GLIBCXX_CHECK_HOST / configure.host
45dnl - default settings for all AM_CONFITIONAL test variables
46dnl - lots of tools, like CC and CXX
aebb8c22 47dnl
f214923c 48AC_DEFUN([GLIBCXX_CONFIGURE], [
82ba99d5
PE		 49 # Keep these sync'd with the list in Makefile.am. The first provides an
50 # expandable list at autoconf time; the second provides an expandable list
51 # (i.e., shell variable) at configure time.
41850419 52 m4_define([glibcxx_SUBDIRS],[include libsupc++ python src doc po testsuite])
82ba99d5
PE		 53 SUBDIRS='glibcxx_SUBDIRS'
54
d2caef2e
PE		 55 # These need to be absolute paths, yet at the same time need to
56 # canonicalize only relative paths, because then amd will not unmount
57 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
3d7c150e 58 glibcxx_builddir=`${PWDCMD-pwd}`
d2caef2e 59 case $srcdir in
ff66d28f
PE		 60 [\\/$]* | ?:[\\/]*) glibcxx_srcdir=${srcdir} ;;
61 *) glibcxx_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
d2caef2e 62 esac
5d1c8e77 63 toplevel_builddir=${glibcxx_builddir}/..
ff66d28f 64 toplevel_srcdir=${glibcxx_srcdir}/..
3d7c150e
BK		 65 AC_SUBST(glibcxx_builddir)
66 AC_SUBST(glibcxx_srcdir)
5d1c8e77 67 AC_SUBST(toplevel_builddir)
ff66d28f 68 AC_SUBST(toplevel_srcdir)
d2caef2e 69
ff66d28f
PE		 70 # We use these options to decide which functions to include. They are
71 # set from the top level.
72 AC_ARG_WITH([target-subdir],
73 AC_HELP_STRING([--with-target-subdir=SUBDIR],
b329dd10 74 [configuring in a subdirectory]))
ff66d28f
PE		 75
76 AC_ARG_WITH([cross-host],
77 AC_HELP_STRING([--with-cross-host=HOST],
b329dd10 78 [configuring with a cross compiler]))
ff66d28f
PE		 79
80 AC_ARG_WITH([newlib],
81 AC_HELP_STRING([--with-newlib],
b329dd10 82 [assume newlib as a system C library]))
ff66d28f 83
ff66d28f
PE		 84 # Will set LN_S to either 'ln -s', 'ln', or 'cp -p' (if linking isn't
85 # available). Uncomment the next line to force a particular method.
86 AC_PROG_LN_S
87 #LN_S='cp -p'
88
5780a46b
BK		 89 AC_CHECK_TOOL(AS, as)
90 AC_CHECK_TOOL(AR, ar)
46840bcd 91 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
b2dad0e3 92
5780a46b 93 AM_MAINTAINER_MODE
b2dad0e3 94
92eabea2
PE		 95 # Set up safe default values for all subsequent AM_CONDITIONAL tests
96 # which are themselves conditionally expanded.
97 ## (Right now, this only matters for enable_wchar_t, but nothing prevents
98 ## other macros from doing the same. This should be automated.) -pme
16da539b 99
176d6eb0
GP		 100 # Check for C library flavor since GNU/Linux platforms use different
101 # configuration directories depending on the C library in use.
464aea98
JM		 102 AC_EGREP_CPP([_using_uclibc], [
103 #include <stdio.h>
104 #if __UCLIBC__
105 _using_uclibc
106 #endif
107 ], uclibc=yes, uclibc=no)
108
aa6a73b9
MK		 109 AC_EGREP_CPP([_using_bionic], [
110 #include <stdio.h>
111 #if __BIONIC__
112 _using_bionic
113 #endif
114 ], bionic=yes, bionic=no)
115
ff66d28f
PE		 116 # Find platform-specific directories containing configuration info.
117 # Also possibly modify flags used elsewhere, as needed by the platform.
3d7c150e 118 GLIBCXX_CHECK_HOST
b2dad0e3
BK		 119])
120
121
c470c17d 122dnl
52b55e7d
PE		 123dnl Tests for newer compiler features, or features that are present in newer
124dnl compiler versions but not older compiler versions still in use, should
125dnl be placed here.
b2dad0e3 126dnl
ff66d28f
PE		 127dnl Defines:
128dnl WERROR='-Werror' if requested and possible; g++'s that lack the
129dnl new inlining code or the new system_header pragma will die on -Werror.
130dnl Leave it out by default and use maint-mode to use it.
131dnl SECTION_FLAGS='-ffunction-sections -fdata-sections' if
132dnl compiler supports it and the user has not requested debug mode.
c21b6f87 133dnl
f214923c 134AC_DEFUN([GLIBCXX_CHECK_COMPILER_FEATURES], [
a4e99046 135 # All these tests are for C++; save the language and the compiler flags.
52b55e7d 136 # The CXXFLAGS thing is suspicious, but based on similar bits previously
3d7c150e 137 # found in GLIBCXX_CONFIGURE.
a4e99046
PE		 138 AC_LANG_SAVE
139 AC_LANG_CPLUSPLUS
140 ac_test_CXXFLAGS="${CXXFLAGS+set}"
141 ac_save_CXXFLAGS="$CXXFLAGS"
a4e99046 142
7f586614
BK		 143 # Check for maintainer-mode bits.
144 if test x"$USE_MAINTAINER_MODE" = xno; then
145 WERROR=''
8bd636c5 146 else
7f586614 147 WERROR='-Werror'
8bd636c5
PE		 148 fi
149
c470c17d
BK		 150 # Check for -ffunction-sections -fdata-sections
151 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
85ee35ca
BK		 152 CXXFLAGS='-g -Werror -ffunction-sections -fdata-sections'
153 AC_TRY_COMPILE([int foo; void bar() { };],, [ac_fdsections=yes], [ac_fdsections=no])
c470c17d
BK		 154 if test "$ac_test_CXXFLAGS" = set; then
155 CXXFLAGS="$ac_save_CXXFLAGS"
156 else
157 # this is the suspicious part
158 CXXFLAGS=''
159 fi
6aa43d99 160 if test x"$ac_fdsections" = x"yes"; then
c470c17d
BK		 161 SECTION_FLAGS='-ffunction-sections -fdata-sections'
162 fi
163 AC_MSG_RESULT($ac_fdsections)
164
a4e99046 165 AC_LANG_RESTORE
8bd636c5 166 AC_SUBST(WERROR)
c470c17d 167 AC_SUBST(SECTION_FLAGS)
b2dad0e3
BK		 168])
169
c470c17d
BK		 170
171dnl
421173e6
PE		 172dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
173dnl the native linker is in use, all variables will be defined to something
174dnl safe (like an empty string).
175dnl
ff66d28f
PE		 176dnl Defines:
177dnl SECTION_LDFLAGS='-Wl,--gc-sections' if possible
a429affe 178dnl OPT_LDFLAGS='-Wl,-O1' and '-z,relro' if possible
ff66d28f
PE		 179dnl LD (as a side effect of testing)
180dnl Sets:
181dnl with_gnu_ld
d60a2d4d 182dnl glibcxx_ld_is_gold (set to "no" or "yes")
ff66d28f
PE		 183dnl glibcxx_gnu_ld_version (possibly)
184dnl
185dnl The last will be a single integer, e.g., version 1.23.45.0.67.89 will
186dnl set glibcxx_gnu_ld_version to 12345. Zeros cause problems.
c470c17d 187dnl
f214923c 188AC_DEFUN([GLIBCXX_CHECK_LINKER_FEATURES], [
421173e6
PE		 189 # If we're not using GNU ld, then there's no point in even trying these
190 # tests. Check for that first. We should have already tested for gld
191 # by now (in libtool), but require it now just to be safe...
654421eb
DE		 192 test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
193 test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
421173e6 194 AC_REQUIRE([AC_PROG_LD])
ff66d28f 195 AC_REQUIRE([AC_PROG_AWK])
5bd17d39 196
c98b201b
PE		 197 # The name set by libtool depends on the version of libtool. Shame on us
198 # for depending on an impl detail, but c'est la vie. Older versions used
199 # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
200 # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
201 # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't
202 # set (hence we're using an older libtool), then set it.
203 if test x${with_gnu_ld+set} != xset; then
204 if test x${ac_cv_prog_gnu_ld+set} != xset; then
205 # We got through "ac_require(ac_prog_ld)" and still not set? Huh?
206 with_gnu_ld=no
207 else
208 with_gnu_ld=$ac_cv_prog_gnu_ld
209 fi
210 fi
211
212 # Start by getting the version number. I think the libtool test already
213 # does some of this, but throws away the result.
d60a2d4d 214 glibcxx_ld_is_gold=no
e2c104d8
BK		 215 if test x"$with_gnu_ld" = x"yes"; then
216 AC_MSG_CHECKING([for ld version])
217 changequote(,)
d60a2d4d
ILT		 218 if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
219 glibcxx_ld_is_gold=yes
220 fi
c82852f7 221 ldver=`$LD --version 2>/dev/null |
89c74f4a 222 sed -e 's/GNU gold /GNU ld /;s/GNU ld version /GNU ld /;s/GNU ld ([^)]*) /GNU ld /;s/GNU ld \([0-9.][0-9.]*\).*/\1/; q'`
e2c104d8
BK		 223 changequote([,])
224 glibcxx_gnu_ld_version=`echo $ldver | \
b329dd10 225 $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
e2c104d8
BK		 226 AC_MSG_RESULT($glibcxx_gnu_ld_version)
227 fi
c98b201b 228
5bd17d39 229 # Set --gc-sections.
d60a2d4d
ILT		 230 glibcxx_have_gc_sections=no
231 if test "$glibcxx_ld_is_gold" = "yes"; then
232 if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
233 glibcxx_have_gc_sections=yes
234 fi
235 else
236 glibcxx_gcsections_min_ld=21602
b329dd10 237 if test x"$with_gnu_ld" = x"yes" &&
ac2b2479 238 test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
d60a2d4d
ILT		 239 glibcxx_have_gc_sections=yes
240 fi
241 fi
242 if test "$glibcxx_have_gc_sections" = "yes"; then
ac2b2479
BK		 243 # Sufficiently young GNU ld it is! Joy and bunny rabbits!
244 # NB: This flag only works reliably after 2.16.1. Configure tests
245 # for this are difficult, so hard wire a value that should work.
421173e6 246
421173e6
PE		 247 ac_test_CFLAGS="${CFLAGS+set}"
248 ac_save_CFLAGS="$CFLAGS"
2a0ab51c 249 CFLAGS='-Wl,--gc-sections'
421173e6
PE		 250
251 # Check for -Wl,--gc-sections
252 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
acb6e9be
BK		 253 AC_TRY_LINK([ int one(void) { return 1; }
254 int two(void) { return 2; }
255 ], [ two(); ] , [ac_gcsections=yes], [ac_gcsections=no])
360e8759
L		 256 if test "$ac_gcsections" = "yes"; then
257 rm -f conftest.c
258 touch conftest.c
259 if $CC -c conftest.c; then
260 if $LD --gc-sections -o conftest conftest.o 2>&1 | \
261 grep "Warning: gc-sections option ignored" > /dev/null; then
262 ac_gcsections=no
263 fi
264 fi
265 rm -f conftest.c conftest.o conftest
266 fi
acb6e9be
BK		 267 if test "$ac_gcsections" = "yes"; then
268 SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
269 fi
270 AC_MSG_RESULT($ac_gcsections)
271
421173e6
PE		 272 if test "$ac_test_CFLAGS" = set; then
273 CFLAGS="$ac_save_CFLAGS"
274 else
275 # this is the suspicious part
276 CFLAGS=''
277 fi
5bd17d39 278 fi
a9117427 279
a429affe 280 # Set -z,relro.
952c7b74 281 # Note this is only for shared objects.
a429affe
BK		 282 ac_ld_relro=no
283 if test x"$with_gnu_ld" = x"yes"; then
284 AC_MSG_CHECKING([for ld that supports -Wl,-z,relro])
285 cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
286 if test -n "$cxx_z_relo"; then
287 OPT_LDFLAGS="-Wl,-z,relro"
288 ac_ld_relro=yes
289 fi
290 AC_MSG_RESULT($ac_ld_relro)
291 fi
292
5bd17d39 293 # Set linker optimization flags.
6aa43d99 294 if test x"$with_gnu_ld" = x"yes"; then
654421eb 295 OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
421173e6 296 fi
5bd17d39 297
c470c17d 298 AC_SUBST(SECTION_LDFLAGS)
421173e6 299 AC_SUBST(OPT_LDFLAGS)
c470c17d
BK		 300])
301
302
b2dad0e3 303dnl
ff66d28f
PE		 304dnl Check for headers for, and arguments to, the setrlimit() function.
305dnl Used only in testsuite_hooks.h. Called from GLIBCXX_CONFIGURE_TESTSUITE.
6aa43d99 306dnl
ff66d28f 307dnl Defines:
b329dd10 308dnl _GLIBCXX_RES_LIMITS if we can set artificial resource limits
2ae6e982 309dnl various HAVE_LIMIT_* for individual limit names
6aa43d99 310dnl
f214923c 311AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT_ancilliary], [
e0103440 312 AC_MSG_CHECKING([for RLIMIT_$1])
ff66d28f
PE		 313 AC_TRY_COMPILE(
314 [#include <unistd.h>
315 #include <sys/time.h>
316 #include <sys/resource.h>
317 ],
318 [ int f = RLIMIT_$1 ; ],
319 [glibcxx_mresult=1], [glibcxx_mresult=0])
2ae6e982 320 AC_DEFINE_UNQUOTED(HAVE_LIMIT_$1, $glibcxx_mresult,
b329dd10 321 [Only used in build directory testsuite_hooks.h.])
e0103440
GK		 322 if test $glibcxx_mresult = 1 ; then res=yes ; else res=no ; fi
323 AC_MSG_RESULT($res)
ff66d28f
PE		 324])
325
f214923c 326AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT], [
ff66d28f
PE		 327 setrlimit_have_headers=yes
328 AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h,
b329dd10
BK		 329 [],
330 [setrlimit_have_headers=no])
ff66d28f
PE		 331 # If don't have the headers, then we can't run the tests now, and we
332 # won't be seeing any of these during testsuite compilation.
333 if test $setrlimit_have_headers = yes; then
334 # Can't do these in a loop, else the resulting syntax is wrong.
335 GLIBCXX_CHECK_SETRLIMIT_ancilliary(DATA)
336 GLIBCXX_CHECK_SETRLIMIT_ancilliary(RSS)
337 GLIBCXX_CHECK_SETRLIMIT_ancilliary(VMEM)
338 GLIBCXX_CHECK_SETRLIMIT_ancilliary(AS)
2ae6e982 339 GLIBCXX_CHECK_SETRLIMIT_ancilliary(FSIZE)
ff66d28f
PE		 340
341 # Check for rlimit, setrlimit.
6d26724a 342 AC_CACHE_VAL(glibcxx_cv_setrlimit, [
ff66d28f 343 AC_TRY_COMPILE(
b329dd10
BK		 344 [#include <unistd.h>
345 #include <sys/time.h>
346 #include <sys/resource.h>
347 ],
348 [struct rlimit r;
349 setrlimit(0, &r);],
350 [glibcxx_cv_setrlimit=yes], [glibcxx_cv_setrlimit=no])
ff66d28f
PE		 351 ])
352 fi
353
2ae6e982 354 AC_MSG_CHECKING([for testsuite resource limits support])
6d26724a 355 if test $setrlimit_have_headers = yes && test $glibcxx_cv_setrlimit = yes; then
2ae6e982 356 ac_res_limits=yes
4651e622 357 AC_DEFINE(_GLIBCXX_RES_LIMITS, 1,
b329dd10
BK		 358 [Define if using setrlimit to set resource limits during
359 "make check"])
ff66d28f 360 else
2ae6e982 361 ac_res_limits=no
ff66d28f 362 fi
2ae6e982 363 AC_MSG_RESULT($ac_res_limits)
6aa43d99
BK		 364])
365
366
6aa43d99 367dnl
ff66d28f
PE		 368dnl Check whether S_ISREG (Posix) or S_IFREG is available in <sys/stat.h>.
369dnl Define HAVE_S_ISREG / HAVE_S_IFREG appropriately.
6aa43d99 370dnl
f214923c 371AC_DEFUN([GLIBCXX_CHECK_S_ISREG_OR_S_IFREG], [
74745ec5
PC		 372
373 AC_LANG_SAVE
374 AC_LANG_CPLUSPLUS
375 ac_save_CXXFLAGS="$CXXFLAGS"
376 CXXFLAGS="$CXXFLAGS -fno-exceptions"
377
e0103440 378 AC_MSG_CHECKING([for S_ISREG or S_IFREG])
ff66d28f 379 AC_CACHE_VAL(glibcxx_cv_S_ISREG, [
74745ec5 380 GCC_TRY_COMPILE_OR_LINK(
ff66d28f
PE		 381 [#include <sys/stat.h>],
382 [struct stat buffer;
383 fstat(0, &buffer);
384 S_ISREG(buffer.st_mode);],
385 [glibcxx_cv_S_ISREG=yes],
386 [glibcxx_cv_S_ISREG=no])
387 ])
388 AC_CACHE_VAL(glibcxx_cv_S_IFREG, [
74745ec5 389 GCC_TRY_COMPILE_OR_LINK(
ff66d28f
PE		 390 [#include <sys/stat.h>],
391 [struct stat buffer;
392 fstat(0, &buffer);
393 S_IFREG & buffer.st_mode;],
394 [glibcxx_cv_S_IFREG=yes],
395 [glibcxx_cv_S_IFREG=no])
396 ])
e0103440 397 res=no
ff66d28f 398 if test $glibcxx_cv_S_ISREG = yes; then
b329dd10
BK		 399 AC_DEFINE(HAVE_S_ISREG, 1,
400 [Define if S_IFREG is available in <sys/stat.h>.])
e0103440 401 res=S_ISREG
ff66d28f 402 elif test $glibcxx_cv_S_IFREG = yes; then
4651e622 403 AC_DEFINE(HAVE_S_IFREG, 1,
b329dd10 404 [Define if S_IFREG is available in <sys/stat.h>.])
e0103440 405 res=S_IFREG
ff66d28f 406 fi
e0103440 407 AC_MSG_RESULT($res)
74745ec5
PC		 408
409 CXXFLAGS="$ac_save_CXXFLAGS"
410 AC_LANG_RESTORE
b2dad0e3
BK		 411])
412
413
dcfa0bc8 414dnl
ff66d28f 415dnl Check whether poll is available in <poll.h>, and define HAVE_POLL.
dcfa0bc8 416dnl
f214923c 417AC_DEFUN([GLIBCXX_CHECK_POLL], [
74745ec5
PC		 418
419 AC_LANG_SAVE
420 AC_LANG_CPLUSPLUS
421 ac_save_CXXFLAGS="$CXXFLAGS"
422 CXXFLAGS="$CXXFLAGS -fno-exceptions"
423
e0103440 424 AC_MSG_CHECKING([for poll])
ff66d28f 425 AC_CACHE_VAL(glibcxx_cv_POLL, [
74745ec5 426 GCC_TRY_COMPILE_OR_LINK(
ff66d28f
PE		 427 [#include <poll.h>],
428 [struct pollfd pfd[1];
429 pfd[0].events = POLLIN;
430 poll(pfd, 1, 0);],
431 [glibcxx_cv_POLL=yes],
432 [glibcxx_cv_POLL=no])
433 ])
434 if test $glibcxx_cv_POLL = yes; then
4651e622 435 AC_DEFINE(HAVE_POLL, 1, [Define if poll is available in <poll.h>.])
ff66d28f 436 fi
e0103440 437 AC_MSG_RESULT($glibcxx_cv_POLL)
74745ec5
PC		 438
439 CXXFLAGS="$ac_save_CXXFLAGS"
440 AC_LANG_RESTORE
ff66d28f
PE		 441])
442
443
444dnl
445dnl Check whether writev is available in <sys/uio.h>, and define HAVE_WRITEV.
446dnl
f214923c 447AC_DEFUN([GLIBCXX_CHECK_WRITEV], [
74745ec5
PC		 448
449 AC_LANG_SAVE
450 AC_LANG_CPLUSPLUS
451 ac_save_CXXFLAGS="$CXXFLAGS"
452 CXXFLAGS="$CXXFLAGS -fno-exceptions"
453
e0103440 454 AC_MSG_CHECKING([for writev])
ff66d28f 455 AC_CACHE_VAL(glibcxx_cv_WRITEV, [
74745ec5 456 GCC_TRY_COMPILE_OR_LINK(
ff66d28f
PE		 457 [#include <sys/uio.h>],
458 [struct iovec iov[2];
459 writev(0, iov, 0);],
460 [glibcxx_cv_WRITEV=yes],
461 [glibcxx_cv_WRITEV=no])
462 ])
463 if test $glibcxx_cv_WRITEV = yes; then
4651e622 464 AC_DEFINE(HAVE_WRITEV, 1, [Define if writev is available in <sys/uio.h>.])
ff66d28f 465 fi
e0103440 466 AC_MSG_RESULT($glibcxx_cv_WRITEV)
74745ec5
PC		 467
468 CXXFLAGS="$ac_save_CXXFLAGS"
469 AC_LANG_RESTORE
ff66d28f
PE		 470])
471
472
3d05b345
PC		 473dnl
474dnl Check whether int64_t is available in <stdint.h>, and define HAVE_INT64_T.
fc9ab7b4 475dnl Also check whether int64_t is actually a typedef to long or long long.
3d05b345 476dnl
f214923c 477AC_DEFUN([GLIBCXX_CHECK_INT64_T], [
fc9ab7b4
PC		 478
479 AC_LANG_SAVE
480 AC_LANG_CPLUSPLUS
481
e0103440 482 AC_MSG_CHECKING([for int64_t])
3d05b345
PC		 483 AC_CACHE_VAL(glibcxx_cv_INT64_T, [
484 AC_TRY_COMPILE(
485 [#include <stdint.h>],
486 [int64_t var;],
487 [glibcxx_cv_INT64_T=yes],
488 [glibcxx_cv_INT64_T=no])
489 ])
fc9ab7b4 490
3d05b345 491 if test $glibcxx_cv_INT64_T = yes; then
4651e622 492 AC_DEFINE(HAVE_INT64_T, 1, [Define if int64_t is available in <stdint.h>.])
fc9ab7b4
PC		 493 AC_MSG_RESULT($glibcxx_cv_INT64_T)
494
495 AC_MSG_CHECKING([for int64_t as long])
496 AC_CACHE_VAL(glibcxx_cv_int64_t_long, [
497 AC_TRY_COMPILE(
b329dd10
BK		 498 [#include <stdint.h>
499 template<typename, typename> struct same { enum { value = -1 }; };
500 template<typename Tp> struct same<Tp, Tp> { enum { value = 1 }; };
501 int array[same<int64_t, long>::value];], [],
fc9ab7b4
PC		 502 [glibcxx_cv_int64_t_long=yes], [glibcxx_cv_int64_t_long=no])
503 ])
504
505 if test $glibcxx_cv_int64_t_long = yes; then
506 AC_DEFINE(HAVE_INT64_T_LONG, 1, [Define if int64_t is a long.])
507 AC_MSG_RESULT($glibcxx_cv_int64_t_long)
508 fi
509
510 AC_MSG_CHECKING([for int64_t as long long])
511 AC_CACHE_VAL(glibcxx_cv_int64_t_long_long, [
512 AC_TRY_COMPILE(
b329dd10
BK		 513 [#include <stdint.h>
514 template<typename, typename> struct same { enum { value = -1 }; };
515 template<typename Tp> struct same<Tp, Tp> { enum { value = 1 }; };
516 int array[same<int64_t, long long>::value];], [],
fc9ab7b4
PC		 517 [glibcxx_cv_int64_t_long_long=yes], [glibcxx_cv_int64_t_long_long=no])
518 ])
519
520 if test $glibcxx_cv_int64_t_long_long = yes; then
521 AC_DEFINE(HAVE_INT64_T_LONG_LONG, 1, [Define if int64_t is a long long.])
522 AC_MSG_RESULT($glibcxx_cv_int64_t_long_long)
523 fi
3d05b345 524 fi
fc9ab7b4
PC		 525
526 AC_LANG_RESTORE
3d05b345
PC		 527])
528
529
530dnl
531dnl Check whether LFS support is available.
532dnl
f214923c 533AC_DEFUN([GLIBCXX_CHECK_LFS], [
0c6b814a 534 AC_LANG_SAVE
9d47bc51
PC		 535 AC_LANG_CPLUSPLUS
536 ac_save_CXXFLAGS="$CXXFLAGS"
b329dd10 537 CXXFLAGS="$CXXFLAGS -fno-exceptions"
e0103440 538 AC_MSG_CHECKING([for LFS support])
3d05b345 539 AC_CACHE_VAL(glibcxx_cv_LFS, [
74745ec5 540 GCC_TRY_COMPILE_OR_LINK(
0c6b814a
PC		 541 [#include <unistd.h>
542 #include <stdio.h>
dd5d134b 543 #include <sys/stat.h>
0c6b814a 544 ],
5c89246d
PC		 545 [FILE* fp;
546 fopen64("t", "w");
547 fseeko64(fp, 0, SEEK_CUR);
548 ftello64(fp);
dd5d134b
PC		 549 lseek64(1, 0, SEEK_CUR);
550 struct stat64 buf;
551 fstat64(1, &buf);],
3d05b345
PC		 552 [glibcxx_cv_LFS=yes],
553 [glibcxx_cv_LFS=no])
554 ])
555 if test $glibcxx_cv_LFS = yes; then
4651e622 556 AC_DEFINE(_GLIBCXX_USE_LFS, 1, [Define if LFS support is available.])
3d05b345 557 fi
e0103440 558 AC_MSG_RESULT($glibcxx_cv_LFS)
9d47bc51
PC		 559 CXXFLAGS="$ac_save_CXXFLAGS"
560 AC_LANG_RESTORE
3d05b345
PC		 561])
562
563
1165dc50
PC		 564dnl
565dnl Check for whether a fully dynamic basic_string implementation should
566dnl be turned on, that does not put empty objects in per-process static
567dnl memory (mostly useful together with shared memory allocators, see PR
568dnl libstdc++/16612 for details).
569dnl
d7a3ef97
JY		 570dnl --enable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING to 1
571dnl --disable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING to 0
572dnl otherwise undefined
1165dc50
PC		 573dnl + Usage: GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING[(DEFAULT)]
574dnl Where DEFAULT is either `yes' or `no'.
575dnl
576AC_DEFUN([GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING], [
577 GLIBCXX_ENABLE(fully-dynamic-string,$1,,[do not put empty strings in per-process static memory])
578 if test $enable_fully_dynamic_string = yes; then
d7a3ef97
JY		 579 enable_fully_dynamic_string_def=1
580 else
581 enable_fully_dynamic_string_def=0
1165dc50 582 fi
d7a3ef97
JY		 583 AC_DEFINE_UNQUOTED([_GLIBCXX_FULLY_DYNAMIC_STRING], [${enable_fully_dynamic_string_def}],
584 [Define to 1 if a fully dynamic basic_string is wanted, 0 to disable, undefined for platform defaults])
1165dc50
PC		 585])
586
587
ff66d28f
PE		 588dnl
589dnl Does any necessary configuration of the testsuite directory. Generates
590dnl the testsuite_hooks.h header.
591dnl
592dnl GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE must be done before this.
593dnl
594dnl Sets:
b329dd10 595dnl enable_abi_check
e3f78d9b
BK		 596dnl GLIBCXX_TEST_WCHAR_T
597dnl GLIBCXX_TEST_THREAD
ff66d28f
PE		 598dnl Substs:
599dnl baseline_dir
00fc1bf6 600dnl baseline_subdir_switch
ff66d28f 601dnl
f214923c 602AC_DEFUN([GLIBCXX_CONFIGURE_TESTSUITE], [
0646b059 603 if $GLIBCXX_IS_NATIVE ; then
2ae6e982 604 # Do checks for resource limit functions.
ff66d28f
PE		 605 GLIBCXX_CHECK_SETRLIMIT
606
607 # Look for setenv, so that extended locale tests can be performed.
608 GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
0646b059 609 fi
dbc66058 610
0646b059
GK		 611 if $GLIBCXX_IS_NATIVE && test $is_hosted = yes &&
612 test $enable_symvers != no; then
613 case "$host" in
614 *-*-cygwin*)
b329dd10 615 enable_abi_check=no ;;
0646b059 616 *)
b329dd10 617 enable_abi_check=yes ;;
0646b059 618 esac
dbc66058
DJ		 619 else
620 # Only build this as native, since automake does not understand
621 # CXX_FOR_BUILD.
622 enable_abi_check=no
ff66d28f 623 fi
b329dd10 624
ff66d28f 625 # Export file names for ABI checking.
68c512f6 626 baseline_dir="$glibcxx_srcdir/config/abi/post/${abi_baseline_pair}"
ff66d28f 627 AC_SUBST(baseline_dir)
00fc1bf6
RO		 628 baseline_subdir_switch="$abi_baseline_subdir_switch"
629 AC_SUBST(baseline_subdir_switch)
ff66d28f
PE		 630])
631
632
b329dd10
BK		 633dnl
634dnl Does any necessary configuration of the documentation directory.
635dnl
636dnl XSLTPROC must be set before this
637dnl
638dnl Sets:
639dnl glibcxx_stylesheets
640dnl Substs:
641dnl XSL_STYLE_DIR
642dnl
643AC_DEFUN([GLIBCXX_CONFIGURE_DOCBOOK], [
644
645AC_MSG_CHECKING([for stylesheets used in generation of documentation])
646glibcxx_stylesheets=no
647if test x${XSLTPROC} = xyes && echo '<title/>' | xsltproc --noout --nonet --xinclude http://docbook.sourceforge.net/release/xsl-ns/current/xhtml-1_1/docbook.xsl - 2>/dev/null; then
648 glibcxx_stylesheets=yes
649fi
650AC_MSG_RESULT($glibcxx_stylesheets)
651
652AC_MSG_CHECKING([for local stylesheet directory])
653glibcxx_local_stylesheets=no
654if test x"$glibcxx_stylesheets" = x"yes"; then
655 if test -d /usr/share/sgml/docbook/xsl-ns-stylesheets; then
656 glibcxx_local_stylesheets=yes
657 XSL_STYLE_DIR=/usr/share/sgml/docbook/xsl-ns-stylesheets
658 fi
659 if test -d /usr/share/xml/docbook/stylesheet/docbook-xsl-ns; then
660 glibcxx_local_stylesheets=yes
661 XSL_STYLE_DIR=/usr/share/xml/docbook/stylesheet/docbook-xsl-ns
662 fi
663fi
664AC_MSG_RESULT($glibcxx_local_stylesheets)
665
666if test x"$glibcxx_local_stylesheets" = x"yes"; then
667 AC_SUBST(XSL_STYLE_DIR)
668 AC_MSG_NOTICE($XSL_STYLE_DIR)
669else
670 glibcxx_stylesheets=no
671fi
672])
673
674
ff66d28f
PE		 675dnl
676dnl Set up *_INCLUDES variables for all sundry Makefile.am's.
677dnl
678dnl Substs:
679dnl GLIBCXX_INCLUDES
680dnl TOPLEVEL_INCLUDES
ff66d28f 681dnl
f214923c 682AC_DEFUN([GLIBCXX_EXPORT_INCLUDES], [
0df3f383
PE		 683 # Used for every C++ compile we perform.
684 GLIBCXX_INCLUDES="\
685-I$glibcxx_builddir/include/$host_alias \
686-I$glibcxx_builddir/include \
687-I$glibcxx_srcdir/libsupc++"
ff66d28f 688
0df3f383 689 # For Canadian crosses, pick this up too.
ff66d28f 690 if test $CANADIAN = yes; then
37e0ff11 691 GLIBCXX_INCLUDES="$GLIBCXX_INCLUDES -I\${includedir}"
ff66d28f
PE		 692 fi
693
0df3f383 694 # Stuff in the actual top level. Currently only used by libsupc++ to
201cdb74
RO		 695 # get unwind* headers from the libgcc dir.
696 #TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/libgcc -I$(toplevel_srcdir)/include'
697 TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/libgcc'
ff66d28f
PE		 698
699 # Now, export this to all the little Makefiles....
700 AC_SUBST(GLIBCXX_INCLUDES)
701 AC_SUBST(TOPLEVEL_INCLUDES)
ff66d28f
PE		 702])
703
704
705dnl
706dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
707dnl (SECTION_FLAGS is done under CHECK_COMPILER_FEATURES.)
708dnl
709dnl Substs:
710dnl OPTIMIZE_CXXFLAGS
711dnl WARN_FLAGS
712dnl
f214923c 713AC_DEFUN([GLIBCXX_EXPORT_FLAGS], [
ff66d28f
PE		 714 # Optimization flags that are probably a good idea for thrill-seekers. Just
715 # uncomment the lines below and make, everything else is ready to go...
62801a96 716 # Alternatively OPTIMIZE_CXXFLAGS can be set in configure.host.
ff66d28f 717 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
ff66d28f
PE		 718 AC_SUBST(OPTIMIZE_CXXFLAGS)
719
dc7c62ae 720 WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual'
ff66d28f
PE		 721 AC_SUBST(WARN_FLAGS)
722])
723
724
725dnl
726dnl All installation directory information is determined here.
727dnl
728dnl Substs:
729dnl gxx_install_dir
730dnl glibcxx_prefixdir
731dnl glibcxx_toolexecdir
732dnl glibcxx_toolexeclibdir
733dnl
734dnl Assumes cross_compiling bits already done, and with_cross_host in
735dnl particular.
736dnl
0f57bf40 737dnl This logic must match gcc/configure.ac's setting of gcc_gxx_include_dir.
505692b0 738dnl config/gxx-include-dir.m4 must be kept consistant with this as well.
f214923c 739AC_DEFUN([GLIBCXX_EXPORT_INSTALL_INFO], [
ff66d28f
PE		 740 glibcxx_toolexecdir=no
741 glibcxx_toolexeclibdir=no
742 glibcxx_prefixdir=$prefix
743
744 AC_MSG_CHECKING([for gxx-include-dir])
745 AC_ARG_WITH([gxx-include-dir],
746 AC_HELP_STRING([--with-gxx-include-dir=DIR],
b329dd10 747 [installation directory for include files]),
ff66d28f
PE		 748 [case "$withval" in
749 yes) AC_MSG_ERROR([Missing directory for --with-gxx-include-dir]) ;;
750 no) gxx_include_dir=no ;;
751 *) gxx_include_dir=$withval ;;
752 esac],
753 [gxx_include_dir=no])
754 AC_MSG_RESULT($gxx_include_dir)
755
756 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
757 AC_ARG_ENABLE([version-specific-runtime-libs],
758 AC_HELP_STRING([--enable-version-specific-runtime-libs],
b329dd10 759 [Specify that runtime libraries should be installed in a compiler-specific directory]),
ff66d28f
PE		 760 [case "$enableval" in
761 yes) version_specific_libs=yes ;;
762 no) version_specific_libs=no ;;
763 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
764 esac],
765 [version_specific_libs=no])
766 AC_MSG_RESULT($version_specific_libs)
767
768 # Default case for install directory for include files.
769 if test $version_specific_libs = no && test $gxx_include_dir = no; then
0f57bf40 770 gxx_include_dir='include/c++/${gcc_version}'
b329dd10
BK		 771 if test -n "$with_cross_host" &&
772 test x"$with_cross_host" != x"no"; then
0f57bf40
MM		 773 gxx_include_dir='${prefix}/${target_alias}/'"$gxx_include_dir"
774 else
775 gxx_include_dir='${prefix}/'"$gxx_include_dir"
776 fi
ff66d28f
PE		 777 fi
778
779 # Version-specific runtime libs processing.
780 if test $version_specific_libs = yes; then
781 # Need the gcc compiler version to know where to install libraries
782 # and header files if --enable-version-specific-runtime-libs option
0314451d
GK		 783 # is selected. FIXME: these variables are misnamed, there are
784 # no executables installed in _toolexecdir or _toolexeclibdir.
ff66d28f 785 if test x"$gxx_include_dir" = x"no"; then
47194af4 786 gxx_include_dir='${libdir}/gcc/${host_alias}/${gcc_version}/include/c++'
ff66d28f 787 fi
0314451d 788 glibcxx_toolexecdir='${libdir}/gcc/${host_alias}'
47194af4 789 glibcxx_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)'
ff66d28f
PE		 790 fi
791
792 # Calculate glibcxx_toolexecdir, glibcxx_toolexeclibdir
793 # Install a library built with a cross compiler in tooldir, not libdir.
794 if test x"$glibcxx_toolexecdir" = x"no"; then
795 if test -n "$with_cross_host" &&
796 test x"$with_cross_host" != x"no"; then
fbe057bb
PE		 797 glibcxx_toolexecdir='${exec_prefix}/${host_alias}'
798 glibcxx_toolexeclibdir='${toolexecdir}/lib'
ff66d28f 799 else
0314451d 800 glibcxx_toolexecdir='${libdir}/gcc/${host_alias}'
fbe057bb 801 glibcxx_toolexeclibdir='${libdir}'
ff66d28f 802 fi
fbe057bb 803 multi_os_directory=`$CXX -print-multi-os-directory`
ff66d28f
PE		 804 case $multi_os_directory in
805 .) ;; # Avoid trailing /.
806 *) glibcxx_toolexeclibdir=$glibcxx_toolexeclibdir/$multi_os_directory ;;
807 esac
808 fi
809
810 AC_MSG_CHECKING([for install location])
811 AC_MSG_RESULT($gxx_include_dir)
812
813 AC_SUBST(glibcxx_prefixdir)
814 AC_SUBST(gxx_include_dir)
815 AC_SUBST(glibcxx_toolexecdir)
816 AC_SUBST(glibcxx_toolexeclibdir)
817])
818
819
820dnl
821dnl GLIBCXX_ENABLE
822dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING)
823dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c)
824dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER)
825dnl
826dnl See docs/html/17_intro/configury.html#enable for documentation.
827dnl
828m4_define([GLIBCXX_ENABLE],[dnl
829m4_define([_g_switch],[--enable-$1])dnl
b453ace3
AS		 830m4_define([_g_help],[AC_HELP_STRING([_g_switch$3],[$4 @<:@default=$2@:>@])])dnl
831 AC_ARG_ENABLE([$1],m4_dquote(_g_help),
ff66d28f
PE		 832 m4_bmatch([$5],
833 [^permit ],
834 [[
835 case "$enableval" in
836 m4_bpatsubst([$5],[permit ])) ;;
837 *) AC_MSG_ERROR(Unknown argument to enable/disable $1) ;;
b329dd10
BK		 838 dnl Idea for future: generate a URL pointing to
839 dnl "onlinedocs/configopts.html#whatever"
ff66d28f
PE		 840 esac
841 ]],
842 [^$],
843 [[
844 case "$enableval" in
845 yes|no) ;;
846 *) AC_MSG_ERROR(Argument to enable/disable $1 must be yes or no) ;;
847 esac
848 ]],
849 [[$5]]),
850 [enable_]m4_bpatsubst([$1],-,_)[=][$2])
851m4_undefine([_g_switch])dnl
852m4_undefine([_g_help])dnl
853])
854
855
856dnl
857dnl Check for ISO/IEC 9899:1999 "C99" support.
858dnl
859dnl --enable-c99 defines _GLIBCXX_USE_C99
860dnl --disable-c99 leaves _GLIBCXX_USE_C99 undefined
861dnl + Usage: GLIBCXX_ENABLE_C99[(DEFAULT)]
862dnl Where DEFAULT is either `yes' or `no'.
863dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
864dnl
f214923c 865AC_DEFUN([GLIBCXX_ENABLE_C99], [
ff66d28f
PE		 866 GLIBCXX_ENABLE(c99,$1,,[turns on ISO/IEC 9899:1999 support])
867
347669a0
BK		 868 if test x"$enable_c99" = x"yes"; then
869
ff66d28f
PE		 870 AC_LANG_SAVE
871 AC_LANG_CPLUSPLUS
872
18f310b7
PC		 873 # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__
874 # undefined and fake C99 facilities - like pre-standard snprintf - may be
875 # spuriously enabled.
876 # Long term, -std=c++0x could be even better, could manage to explicitely
877 # request C99 facilities to the underlying C headers.
b6f914f6 878 ac_save_CXXFLAGS="$CXXFLAGS"
18f310b7 879 CXXFLAGS="$CXXFLAGS -std=c++98"
b6f914f6
RS		 880 ac_save_LIBS="$LIBS"
881 ac_save_gcc_no_link="$gcc_no_link"
882
883 if test x$gcc_no_link != xyes; then
884 # Use -fno-exceptions to that the C driver can link these tests without
885 # hitting undefined references to personality routines.
886 CXXFLAGS="$CXXFLAGS -fno-exceptions"
887 AC_CHECK_LIB(m, sin, [
888 LIBS="$LIBS -lm"
889 ], [
890 # Use the default compile-only tests in GCC_TRY_COMPILE_OR_LINK
891 gcc_no_link=yes
892 ])
893 fi
894
ff66d28f 895 # Check for the existence of <math.h> functions used if C99 is enabled.
ff66d28f 896 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
6d26724a 897 AC_CACHE_VAL(glibcxx_cv_c99_math, [
b6f914f6
RS		 898 GCC_TRY_COMPILE_OR_LINK(
899 [#include <math.h>
900 volatile double d1, d2;
901 volatile int i;],
902 [i = fpclassify(d1);
903 i = isfinite(d1);
904 i = isinf(d1);
905 i = isnan(d1);
906 i = isnormal(d1);
907 i = signbit(d1);
908 i = isgreater(d1, d2);
909 i = isgreaterequal(d1, d2);
910 i = isless(d1, d2);
911 i = islessequal(d1, d2);
912 i = islessgreater(d1, d2);
913 i = islessgreater(d1, d2);
914 i = isunordered(d1, d2);
6d26724a 915 ],[glibcxx_cv_c99_math=yes], [glibcxx_cv_c99_math=no])
347669a0 916 ])
6d26724a
RW		 917 AC_MSG_RESULT($glibcxx_cv_c99_math)
918 if test x"$glibcxx_cv_c99_math" = x"yes"; then
4651e622 919 AC_DEFINE(_GLIBCXX_USE_C99_MATH, 1,
b329dd10
BK		 920 [Define if C99 functions or macros in <math.h> should be imported
921 in <cmath> in namespace std.])
517da0ce
MM		 922 fi
923
225962a0 924 # Check for the existence of <complex.h> complex math functions.
52e6723c
BK		 925 # This is necessary even though libstdc++ uses the builtin versions
926 # of these functions, because if the builtin cannot be used, a reference
927 # to the library function is emitted.
5ad2f32d 928 AC_CHECK_HEADERS(tgmath.h, ac_has_tgmath_h=yes, ac_has_tgmath_h=no)
52e6723c 929 AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no)
6d26724a 930 glibcxx_cv_c99_complex=no;
52e6723c 931 if test x"$ac_has_complex_h" = x"yes"; then
52e6723c 932 AC_MSG_CHECKING([for ISO C99 support in <complex.h>])
b6f914f6
RS		 933 GCC_TRY_COMPILE_OR_LINK(
934 [#include <complex.h>
935 typedef __complex__ float float_type;
936 typedef __complex__ double double_type;
937 typedef __complex__ long double ld_type;
938 volatile float_type tmpf;
939 volatile double_type tmpd;
940 volatile ld_type tmpld;
941 volatile float f;
942 volatile double d;
943 volatile long double ld;],
944 [f = cabsf(tmpf);
945 f = cargf(tmpf);
946 tmpf = ccosf(tmpf);
947 tmpf = ccoshf(tmpf);
948 tmpf = cexpf(tmpf);
949 tmpf = clogf(tmpf);
950 tmpf = csinf(tmpf);
951 tmpf = csinhf(tmpf);
952 tmpf = csqrtf(tmpf);
953 tmpf = ctanf(tmpf);
954 tmpf = ctanhf(tmpf);
955 tmpf = cpowf(tmpf, tmpf);
3cd54fc9 956 tmpf = cprojf(tmpf);
b6f914f6
RS		 957 d = cabs(tmpd);
958 d = carg(tmpd);
959 tmpd = ccos(tmpd);
960 tmpd = ccosh(tmpd);
961 tmpd = cexp(tmpd);
962 tmpd = clog(tmpd);
963 tmpd = csin(tmpd);
964 tmpd = csinh(tmpd);
965 tmpd = csqrt(tmpd);
966 tmpd = ctan(tmpd);
967 tmpd = ctanh(tmpd);
968 tmpd = cpow(tmpd, tmpd);
3cd54fc9 969 tmpd = cproj(tmpd);
b6f914f6
RS		 970 ld = cabsl(tmpld);
971 ld = cargl(tmpld);
972 tmpld = ccosl(tmpld);
973 tmpld = ccoshl(tmpld);
974 tmpld = cexpl(tmpld);
975 tmpld = clogl(tmpld);
976 tmpld = csinl(tmpld);
977 tmpld = csinhl(tmpld);
978 tmpld = csqrtl(tmpld);
979 tmpld = ctanl(tmpld);
980 tmpld = ctanhl(tmpld);
981 tmpld = cpowl(tmpld, tmpld);
3cd54fc9 982 tmpld = cprojl(tmpld);
6d26724a 983 ],[glibcxx_cv_c99_complex=yes], [glibcxx_cv_c99_complex=no])
52e6723c 984 fi
6d26724a
RW		 985 AC_MSG_RESULT($glibcxx_cv_c99_complex)
986 if test x"$glibcxx_cv_c99_complex" = x"yes"; then
4651e622 987 AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX, 1,
b329dd10
BK		 988 [Define if C99 functions in <complex.h> should be used in
989 <complex>. Using compiler builtins for these functions requires
990 corresponding C99 library functions to be present.])
52e6723c
BK		 991 fi
992
ff66d28f 993 # Check for the existence in <stdio.h> of vscanf, et. al.
ff66d28f 994 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
6d26724a 995 AC_CACHE_VAL(glibcxx_cv_c99_stdio, [
b6f914f6
RS		 996 GCC_TRY_COMPILE_OR_LINK(
997 [#include <stdio.h>
998 #include <stdarg.h>
999 void foo(char* fmt, ...)
1000 {
1001 va_list args; va_start(args, fmt);
b329dd10 1002 vfscanf(stderr, "%i", args);
b6f914f6
RS		 1003 vscanf("%i", args);
1004 vsnprintf(fmt, 0, "%i", args);
1005 vsscanf(fmt, "%i", args);
1006 }],
1007 [snprintf("12", 0, "%i");],
6d26724a 1008 [glibcxx_cv_c99_stdio=yes], [glibcxx_cv_c99_stdio=no])
347669a0 1009 ])
6d26724a 1010 AC_MSG_RESULT($glibcxx_cv_c99_stdio)
ff66d28f
PE		 1011
1012 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
ff66d28f 1013 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
6d26724a 1014 AC_CACHE_VAL(glibcxx_cv_c99_stdlib, [
b6f914f6
RS		 1015 GCC_TRY_COMPILE_OR_LINK(
1016 [#include <stdlib.h>
1017 volatile float f;
1018 volatile long double ld;
1019 volatile unsigned long long ll;
1020 lldiv_t mydivt;],
1021 [char* tmp;
1022 f = strtof("gnu", &tmp);
1023 ld = strtold("gnu", &tmp);
1024 ll = strtoll("gnu", &tmp, 10);
1025 ll = strtoull("gnu", &tmp, 10);
1026 ll = llabs(10);
1027 mydivt = lldiv(10,1);
1028 ll = mydivt.quot;
1029 ll = mydivt.rem;
1030 ll = atoll("10");
1031 _Exit(0);
6d26724a 1032 ],[glibcxx_cv_c99_stdlib=yes], [glibcxx_cv_c99_stdlib=no])
347669a0 1033 ])
6d26724a 1034 AC_MSG_RESULT($glibcxx_cv_c99_stdlib)
ff66d28f 1035
8a9b2875 1036 # Check for the existence in <wchar.h> of wcstold, etc.
6d26724a 1037 glibcxx_cv_c99_wchar=no;
347669a0
BK		 1038 if test x"$ac_has_wchar_h" = xyes &&
1039 test x"$ac_has_wctype_h" = xyes; then
b329dd10 1040 AC_MSG_CHECKING([for ISO C99 support in <wchar.h>])
347669a0 1041 AC_TRY_COMPILE([#include <wchar.h>
b329dd10
BK		 1042 namespace test
1043 {
347669a0
BK		 1044 using ::wcstold;
1045 using ::wcstoll;
347669a0 1046 using ::wcstoull;
347669a0 1047 }
6d26724a 1048 ],[],[glibcxx_cv_c99_wchar=yes], [glibcxx_cv_c99_wchar=no])
347669a0
BK		 1049
1050 # Checks for wide character functions that may not be present.
1051 # Injection of these is wrapped with guard macros.
1052 # NB: only put functions here, instead of immediately above, if
1053 # absolutely necessary.
1054 AC_TRY_COMPILE([#include <wchar.h>
b329dd10 1055 namespace test { using ::vfwscanf; } ], [],
347669a0
BK		 1056 [AC_DEFINE(HAVE_VFWSCANF,1,
1057 [Defined if vfwscanf exists.])],[])
1058
1059 AC_TRY_COMPILE([#include <wchar.h>
b329dd10 1060 namespace test { using ::vswscanf; } ], [],
347669a0
BK		 1061 [AC_DEFINE(HAVE_VSWSCANF,1,
1062 [Defined if vswscanf exists.])],[])
1063
1064 AC_TRY_COMPILE([#include <wchar.h>
b329dd10 1065 namespace test { using ::vwscanf; } ], [],
347669a0
BK		 1066 [AC_DEFINE(HAVE_VWSCANF,1,[Defined if vwscanf exists.])],[])
1067
1068 AC_TRY_COMPILE([#include <wchar.h>
b329dd10 1069 namespace test { using ::wcstof; } ], [],
347669a0
BK		 1070 [AC_DEFINE(HAVE_WCSTOF,1,[Defined if wcstof exists.])],[])
1071
1072 AC_TRY_COMPILE([#include <wctype.h>],
b329dd10 1073 [ wint_t t; int i = iswblank(t);],
347669a0
BK		 1074 [AC_DEFINE(HAVE_ISWBLANK,1,
1075 [Defined if iswblank exists.])],[])
1076
6d26724a 1077 AC_MSG_RESULT($glibcxx_cv_c99_wchar)
347669a0 1078 fi
ff66d28f 1079
347669a0 1080 # Option parsed, now set things appropriately.
6d26724a
RW		 1081 if test x"$glibcxx_cv_c99_math" = x"no" ||
1082 test x"$glibcxx_cv_c99_complex" = x"no" ||
1083 test x"$glibcxx_cv_c99_stdio" = x"no" ||
1084 test x"$glibcxx_cv_c99_stdlib" = x"no" ||
1085 test x"$glibcxx_cv_c99_wchar" = x"no"; then
ff66d28f 1086 enable_c99=no;
347669a0 1087 else
4651e622
KC		 1088 AC_DEFINE(_GLIBCXX_USE_C99, 1,
1089 [Define if C99 functions or macros from <wchar.h>, <math.h>,
1090 <complex.h>, <stdio.h>, and <stdlib.h> can be used or exposed.])
ff66d28f
PE		 1091 fi
1092
b6f914f6
RS		 1093 gcc_no_link="$ac_save_gcc_no_link"
1094 LIBS="$ac_save_LIBS"
1095 CXXFLAGS="$ac_save_CXXFLAGS"
ff66d28f 1096 AC_LANG_RESTORE
b329dd10 1097 fi
347669a0
BK		 1098
1099 AC_MSG_CHECKING([for fully enabled ISO C99 support])
1100 AC_MSG_RESULT($enable_c99)
dcfa0bc8
PE		 1101])
1102
1103
15e38d0d 1104dnl
959d14e1
CF		 1105dnl Check for clock_gettime, nanosleep and sched_yield, used in the
1106dnl implementation of 20.8.5 [time.clock], and 30.2.2 [thread.thread.this]
1107dnl in the current C++0x working draft.
15e38d0d 1108dnl
959d14e1
CF		 1109dnl --enable-libstdcxx-time
1110dnl --enable-libstdcxx-time=yes
1111dnl checks for the availability of monotonic and realtime clocks,
1112dnl nanosleep and sched_yield in libc and libposix4 and, in case, links
1113dnl the latter
1114dnl --enable-libstdcxx-time=rt
6c3385c1 1115dnl also searches (and, in case, links) librt. Note that this is
610870b2 1116dnl not always desirable because, in glibc, for example, in turn it
6c3385c1
PC		 1117dnl triggers the linking of libpthread too, which activates locking,
1118dnl a large overhead for single-thread programs.
959d14e1
CF		 1119dnl --enable-libstdcxx-time=no
1120dnl --disable-libstdcxx-time
610870b2
PC		 1121dnl disables the checks completely
1122dnl
959d14e1 1123AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_TIME], [
610870b2 1124
959d14e1 1125 AC_MSG_CHECKING([for clock_gettime, nanosleep and sched_yield])
b453ace3 1126 GLIBCXX_ENABLE(libstdcxx-time,$1,[[[=KIND]]],
610870b2
PC		 1127 [use KIND for check type],
1128 [permit yes|no|rt])
15e38d0d
CF		 1129
1130 AC_LANG_SAVE
1131 AC_LANG_CPLUSPLUS
1132 ac_save_CXXFLAGS="$CXXFLAGS"
1133 CXXFLAGS="$CXXFLAGS -fno-exceptions"
ec6fa56a
PB		 1134 ac_save_LIBS="$LIBS"
1135
1ac5e52c
MK		 1136 ac_has_clock_monotonic=no
1137 ac_has_clock_realtime=no
1138 AC_MSG_RESULT($enable_libstdcxx_time)
ec6fa56a 1139
959d14e1 1140 if test x"$enable_libstdcxx_time" != x"no"; then
ec6fa56a 1141
959d14e1 1142 if test x"$enable_libstdcxx_time" = x"rt"; then
610870b2 1143 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
959d14e1 1144 AC_SEARCH_LIBS(nanosleep, [rt posix4])
610870b2
PC		 1145 else
1146 AC_SEARCH_LIBS(clock_gettime, [posix4])
959d14e1 1147 AC_SEARCH_LIBS(nanosleep, [posix4])
610870b2
PC		 1148 fi
1149
1150 case "$ac_cv_search_clock_gettime" in
1151 -l*) GLIBCXX_LIBS=$ac_cv_search_clock_gettime
959d14e1
CF		 1152 ;;
1153 esac
1154 case "$ac_cv_search_nanosleep" in
1155 -l*) GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_nanosleep"
1156 ;;
1157 esac
1158
1159 AC_SEARCH_LIBS(sched_yield, [rt posix4])
1160
1161 case "$ac_cv_search_sched_yield" in
1162 -lposix4*)
1163 GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield"
1164 AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
b329dd10 1165 [ Defined if sched_yield is available. ])
959d14e1
CF		 1166 ;;
1167 -lrt*)
1168 if test x"$enable_libstdcxx_time" = x"rt"; then
b329dd10
BK		 1169 GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield"
1170 AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
1171 [ Defined if sched_yield is available. ])
959d14e1
CF		 1172 fi
1173 ;;
1174 *)
1175 AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
b329dd10 1176 [ Defined if sched_yield is available. ])
959d14e1 1177 ;;
610870b2
PC		 1178 esac
1179
1180 AC_CHECK_HEADERS(unistd.h, ac_has_unistd_h=yes, ac_has_unistd_h=no)
1181
1182 if test x"$ac_has_unistd_h" = x"yes"; then
1183 AC_MSG_CHECKING([for monotonic clock])
1184 AC_TRY_LINK(
b329dd10
BK		 1185 [#include <unistd.h>
1186 #include <time.h>
1187 ],
1188 [#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK)
1189 timespec tp;
1190 #endif
1191 clock_gettime(CLOCK_MONOTONIC, &tp);
1192 ], [ac_has_clock_monotonic=yes], [ac_has_clock_monotonic=no])
1193
1194 AC_MSG_RESULT($ac_has_clock_monotonic)
1195
610870b2
PC		 1196 AC_MSG_CHECKING([for realtime clock])
1197 AC_TRY_LINK(
b329dd10
BK		 1198 [#include <unistd.h>
1199 #include <time.h>
1200 ],
1201 [#if _POSIX_TIMERS > 0
1202 timespec tp;
1203 #endif
1204 clock_gettime(CLOCK_REALTIME, &tp);
1205 ], [ac_has_clock_realtime=yes], [ac_has_clock_realtime=no])
610870b2
PC		 1206
1207 AC_MSG_RESULT($ac_has_clock_realtime)
610870b2 1208
959d14e1
CF		 1209 AC_MSG_CHECKING([for nanosleep])
1210 AC_TRY_LINK(
b329dd10
BK		 1211 [#include <unistd.h>
1212 #include <time.h>
1213 ],
1214 [#if _POSIX_TIMERS > 0
1215 timespec tp;
1216 #endif
1217 nanosleep(&tp, 0);
1218 ], [ac_has_nanosleep=yes], [ac_has_nanosleep=no])
959d14e1
CF		 1219
1220 AC_MSG_RESULT($ac_has_nanosleep)
1221 fi
610870b2
PC		 1222 fi
1223
15e38d0d
CF		 1224 if test x"$ac_has_clock_monotonic" = x"yes"; then
1225 AC_DEFINE(_GLIBCXX_USE_CLOCK_MONOTONIC, 1,
1226 [ Defined if clock_gettime has monotonic clock support. ])
1227 fi
ec6fa56a 1228
15e38d0d
CF		 1229 if test x"$ac_has_clock_realtime" = x"yes"; then
1230 AC_DEFINE(_GLIBCXX_USE_CLOCK_REALTIME, 1,
1231 [ Defined if clock_gettime has realtime clock support. ])
1232 fi
ec6fa56a 1233
959d14e1
CF		 1234 if test x"$ac_has_nanosleep" = x"yes"; then
1235 AC_DEFINE(_GLIBCXX_USE_NANOSLEEP, 1,
1236 [ Defined if nanosleep is available. ])
1237 fi
1238
ec6fa56a
PB		 1239 AC_SUBST(GLIBCXX_LIBS)
1240
15e38d0d 1241 CXXFLAGS="$ac_save_CXXFLAGS"
ec6fa56a 1242 LIBS="$ac_save_LIBS"
15e38d0d
CF		 1243 AC_LANG_RESTORE
1244])
1245
1246dnl
610870b2
PC		 1247dnl Check for gettimeofday, used in the implementation of 20.8.5
1248dnl [time.clock] in the current C++0x working draft.
15e38d0d
CF		 1249dnl
1250AC_DEFUN([GLIBCXX_CHECK_GETTIMEOFDAY], [
b329dd10 1251
610870b2
PC		 1252 AC_MSG_CHECKING([for gettimeofday])
1253
15e38d0d
CF		 1254 AC_LANG_SAVE
1255 AC_LANG_CPLUSPLUS
1256 ac_save_CXXFLAGS="$CXXFLAGS"
1257 CXXFLAGS="$CXXFLAGS -fno-exceptions"
b329dd10 1258
15e38d0d
CF		 1259 ac_has_gettimeofday=no;
1260 AC_CHECK_HEADERS(sys/time.h, ac_has_sys_time_h=yes, ac_has_sys_time_h=no)
1261 if test x"$ac_has_sys_time_h" = x"yes"; then
1262 AC_MSG_CHECKING([for gettimeofday])
610870b2 1263 GCC_TRY_COMPILE_OR_LINK([#include <sys/time.h>],
15e38d0d
CF		 1264 [timeval tv; gettimeofday(&tv, 0);],
1265 [ac_has_gettimeofday=yes], [ac_has_gettimeofday=no])
b329dd10 1266
15e38d0d
CF		 1267 AC_MSG_RESULT($ac_has_gettimeofday)
1268 fi
b329dd10 1269
15e38d0d
CF		 1270 if test x"$ac_has_gettimeofday" = x"yes"; then
1271 AC_DEFINE(_GLIBCXX_USE_GETTIMEOFDAY, 1,
1272 [ Defined if gettimeofday is available. ])
1273 fi
b329dd10 1274
15e38d0d
CF		 1275 CXXFLAGS="$ac_save_CXXFLAGS"
1276 AC_LANG_RESTORE
1277])
1278
bd2bb1ea
PC		 1279dnl
1280dnl Check for ISO/IEC 9899:1999 "C99" support to ISO/IEC DTR 19768 "TR1"
1281dnl facilities in Chapter 8, "C compatibility".
1282dnl
1283AC_DEFUN([GLIBCXX_CHECK_C99_TR1], [
1284
1285 AC_LANG_SAVE
1286 AC_LANG_CPLUSPLUS
1287
18f310b7
PC		 1288 # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__
1289 # undefined and fake C99 facilities may be spuriously enabled.
1290 ac_save_CXXFLAGS="$CXXFLAGS"
1291 CXXFLAGS="$CXXFLAGS -std=c++98"
1292
bd2bb1ea
PC		 1293 # Check for the existence of <complex.h> complex math functions used
1294 # by tr1/complex.
1295 AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no)
1296 ac_c99_complex_tr1=no;
1297 if test x"$ac_has_complex_h" = x"yes"; then
1298 AC_MSG_CHECKING([for ISO C99 support to TR1 in <complex.h>])
1299 AC_TRY_COMPILE([#include <complex.h>],
b329dd10
BK		 1300 [typedef __complex__ float float_type; float_type tmpf;
1301 cacosf(tmpf);
1302 casinf(tmpf);
1303 catanf(tmpf);
1304 cacoshf(tmpf);
1305 casinhf(tmpf);
1306 catanhf(tmpf);
bd2bb1ea 1307 typedef __complex__ double double_type; double_type tmpd;
b329dd10
BK		 1308 cacos(tmpd);
1309 casin(tmpd);
1310 catan(tmpd);
1311 cacosh(tmpd);
1312 casinh(tmpd);
1313 catanh(tmpd);
bd2bb1ea 1314 typedef __complex__ long double ld_type; ld_type tmpld;
b329dd10
BK		 1315 cacosl(tmpld);
1316 casinl(tmpld);
1317 catanl(tmpld);
1318 cacoshl(tmpld);
1319 casinhl(tmpld);
1320 catanhl(tmpld);
bd2bb1ea
PC		 1321 ],[ac_c99_complex_tr1=yes], [ac_c99_complex_tr1=no])
1322 fi
1323 AC_MSG_RESULT($ac_c99_complex_tr1)
1324 if test x"$ac_c99_complex_tr1" = x"yes"; then
1325 AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX_TR1, 1,
b329dd10
BK		 1326 [Define if C99 functions in <complex.h> should be used in
1327 <tr1/complex>. Using compiler builtins for these functions
bd2bb1ea
PC		 1328 requires corresponding C99 library functions to be present.])
1329 fi
1330
1331 # Check for the existence of <ctype.h> functions.
1332 AC_MSG_CHECKING([for ISO C99 support to TR1 in <ctype.h>])
6d26724a 1333 AC_CACHE_VAL(glibcxx_cv_c99_ctype_tr1, [
bd2bb1ea 1334 AC_TRY_COMPILE([#include <ctype.h>],
b329dd10
BK		 1335 [int ch;
1336 int ret;
1337 ret = isblank(ch);
0f24e8de
PC		 1338 ],[glibcxx_cv_c99_ctype_tr1=yes],
1339 [glibcxx_cv_c99_ctype_tr1=no])
bd2bb1ea 1340 ])
6d26724a
RW		 1341 AC_MSG_RESULT($glibcxx_cv_c99_ctype_tr1)
1342 if test x"$glibcxx_cv_c99_ctype_tr1" = x"yes"; then
bd2bb1ea 1343 AC_DEFINE(_GLIBCXX_USE_C99_CTYPE_TR1, 1,
b329dd10 1344 [Define if C99 functions in <ctype.h> should be imported in
bd2bb1ea
PC		 1345 <tr1/cctype> in namespace std::tr1.])
1346 fi
1347
20921e53
PC		 1348 # Check for the existence of <fenv.h> functions.
1349 AC_CHECK_HEADERS(fenv.h, ac_has_fenv_h=yes, ac_has_fenv_h=no)
1350 ac_c99_fenv_tr1=no;
1351 if test x"$ac_has_fenv_h" = x"yes"; then
1352 AC_MSG_CHECKING([for ISO C99 support to TR1 in <fenv.h>])
1353 AC_TRY_COMPILE([#include <fenv.h>],
b329dd10
BK		 1354 [int except, mode;
1355 fexcept_t* pflag;
1356 fenv_t* penv;
1357 int ret;
1358 ret = feclearexcept(except);
1359 ret = fegetexceptflag(pflag, except);
1360 ret = feraiseexcept(except);
1361 ret = fesetexceptflag(pflag, except);
1362 ret = fetestexcept(except);
1363 ret = fegetround();
1364 ret = fesetround(mode);
1365 ret = fegetenv(penv);
1366 ret = feholdexcept(penv);
1367 ret = fesetenv(penv);
1368 ret = feupdateenv(penv);
20921e53
PC		 1369 ],[ac_c99_fenv_tr1=yes], [ac_c99_fenv_tr1=no])
1370 fi
1371 AC_MSG_RESULT($ac_c99_fenv_tr1)
1372 if test x"$ac_c99_fenv_tr1" = x"yes"; then
1373 AC_DEFINE(_GLIBCXX_USE_C99_FENV_TR1, 1,
b329dd10 1374 [Define if C99 functions in <fenv.h> should be imported in
20921e53
PC		 1375 <tr1/cfenv> in namespace std::tr1.])
1376 fi
1377
2a1d6346
PC		 1378 # Check for the existence of <stdint.h> types.
1379 AC_MSG_CHECKING([for ISO C99 support to TR1 in <stdint.h>])
6d26724a 1380 AC_CACHE_VAL(glibcxx_cv_c99_stdint_tr1, [
5289e808 1381 AC_TRY_COMPILE([#define __STDC_LIMIT_MACROS
b329dd10
BK		 1382 #define __STDC_CONSTANT_MACROS
1383 #include <stdint.h>],
1384 [typedef int8_t my_int8_t;
5289e808
PC		 1385 my_int8_t i8 = INT8_MIN;
1386 i8 = INT8_MAX;
b329dd10 1387 typedef int16_t my_int16_t;
5289e808
PC		 1388 my_int16_t i16 = INT16_MIN;
1389 i16 = INT16_MAX;
b329dd10 1390 typedef int32_t my_int32_t;
5289e808
PC		 1391 my_int32_t i32 = INT32_MIN;
1392 i32 = INT32_MAX;
b329dd10 1393 typedef int64_t my_int64_t;
5289e808
PC		 1394 my_int64_t i64 = INT64_MIN;
1395 i64 = INT64_MAX;
b329dd10 1396 typedef int_fast8_t my_int_fast8_t;
5289e808
PC		 1397 my_int_fast8_t if8 = INT_FAST8_MIN;
1398 if8 = INT_FAST8_MAX;
b329dd10 1399 typedef int_fast16_t my_int_fast16_t;
5289e808
PC		 1400 my_int_fast16_t if16 = INT_FAST16_MIN;
1401 if16 = INT_FAST16_MAX;
b329dd10 1402 typedef int_fast32_t my_int_fast32_t;
5289e808
PC		 1403 my_int_fast32_t if32 = INT_FAST32_MIN;
1404 if32 = INT_FAST32_MAX;
b329dd10 1405 typedef int_fast64_t my_int_fast64_t;
5289e808
PC		 1406 my_int_fast64_t if64 = INT_FAST64_MIN;
1407 if64 = INT_FAST64_MAX;
b329dd10 1408 typedef int_least8_t my_int_least8_t;
5289e808
PC		 1409 my_int_least8_t il8 = INT_LEAST8_MIN;
1410 il8 = INT_LEAST8_MAX;
b329dd10 1411 typedef int_least16_t my_int_least16_t;
5289e808
PC		 1412 my_int_least16_t il16 = INT_LEAST16_MIN;
1413 il16 = INT_LEAST16_MAX;
b329dd10 1414 typedef int_least32_t my_int_least32_t;
5289e808
PC		 1415 my_int_least32_t il32 = INT_LEAST32_MIN;
1416 il32 = INT_LEAST32_MAX;
b329dd10 1417 typedef int_least64_t my_int_least64_t;
5289e808
PC		 1418 my_int_least64_t il64 = INT_LEAST64_MIN;
1419 il64 = INT_LEAST64_MAX;
2a1d6346 1420 typedef intmax_t my_intmax_t;
5289e808
PC		 1421 my_intmax_t im = INTMAX_MAX;
1422 im = INTMAX_MIN;
2a1d6346 1423 typedef intptr_t my_intptr_t;
5289e808
PC		 1424 my_intptr_t ip = INTPTR_MAX;
1425 ip = INTPTR_MIN;
b329dd10 1426 typedef uint8_t my_uint8_t;
5289e808
PC		 1427 my_uint8_t ui8 = UINT8_MAX;
1428 ui8 = UINT8_MAX;
b329dd10 1429 typedef uint16_t my_uint16_t;
5289e808
PC		 1430 my_uint16_t ui16 = UINT16_MAX;
1431 ui16 = UINT16_MAX;
b329dd10 1432 typedef uint32_t my_uint32_t;
5289e808
PC		 1433 my_uint32_t ui32 = UINT32_MAX;
1434 ui32 = UINT32_MAX;
b329dd10 1435 typedef uint64_t my_uint64_t;
5289e808
PC		 1436 my_uint64_t ui64 = UINT64_MAX;
1437 ui64 = UINT64_MAX;
b329dd10 1438 typedef uint_fast8_t my_uint_fast8_t;
5289e808
PC		 1439 my_uint_fast8_t uif8 = UINT_FAST8_MAX;
1440 uif8 = UINT_FAST8_MAX;
b329dd10 1441 typedef uint_fast16_t my_uint_fast16_t;
5289e808
PC		 1442 my_uint_fast16_t uif16 = UINT_FAST16_MAX;
1443 uif16 = UINT_FAST16_MAX;
b329dd10 1444 typedef uint_fast32_t my_uint_fast32_t;
5289e808
PC		 1445 my_uint_fast32_t uif32 = UINT_FAST32_MAX;
1446 uif32 = UINT_FAST32_MAX;
b329dd10 1447 typedef uint_fast64_t my_uint_fast64_t;
5289e808
PC		 1448 my_uint_fast64_t uif64 = UINT_FAST64_MAX;
1449 uif64 = UINT_FAST64_MAX;
b329dd10 1450 typedef uint_least8_t my_uint_least8_t;
5289e808
PC		 1451 my_uint_least8_t uil8 = UINT_LEAST8_MAX;
1452 uil8 = UINT_LEAST8_MAX;
b329dd10 1453 typedef uint_least16_t my_uint_least16_t;
5289e808
PC		 1454 my_uint_least16_t uil16 = UINT_LEAST16_MAX;
1455 uil16 = UINT_LEAST16_MAX;
b329dd10 1456 typedef uint_least32_t my_uint_least32_t;
5289e808
PC		 1457 my_uint_least32_t uil32 = UINT_LEAST32_MAX;
1458 uil32 = UINT_LEAST32_MAX;
b329dd10 1459 typedef uint_least64_t my_uint_least64_t;
5289e808
PC		 1460 my_uint_least64_t uil64 = UINT_LEAST64_MAX;
1461 uil64 = UINT_LEAST64_MAX;
2a1d6346 1462 typedef uintmax_t my_uintmax_t;
5289e808
PC		 1463 my_uintmax_t uim = UINTMAX_MAX;
1464 uim = UINTMAX_MAX;
2a1d6346 1465 typedef uintptr_t my_uintptr_t;
5289e808
PC		 1466 my_uintptr_t uip = UINTPTR_MAX;
1467 uip = UINTPTR_MAX;
0f24e8de
PC		 1468 ],[glibcxx_cv_c99_stdint_tr1=yes],
1469 [glibcxx_cv_c99_stdint_tr1=no])
2a1d6346 1470 ])
6d26724a
RW		 1471 AC_MSG_RESULT($glibcxx_cv_c99_stdint_tr1)
1472 if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then
2a1d6346 1473 AC_DEFINE(_GLIBCXX_USE_C99_STDINT_TR1, 1,
b329dd10 1474 [Define if C99 types in <stdint.h> should be imported in
2a1d6346
PC		 1475 <tr1/cstdint> in namespace std::tr1.])
1476 fi
1477
4f0de5dd
PC		 1478 # Check for the existence of <math.h> functions.
1479 AC_MSG_CHECKING([for ISO C99 support to TR1 in <math.h>])
6d26724a 1480 AC_CACHE_VAL(glibcxx_cv_c99_math_tr1, [
4f0de5dd 1481 AC_TRY_COMPILE([#include <math.h>],
b329dd10
BK		 1482 [typedef double_t my_double_t;
1483 typedef float_t my_float_t;
1484 acosh(0.0);
1485 acoshf(0.0f);
1486 acoshl(0.0l);
1487 asinh(0.0);
1488 asinhf(0.0f);
1489 asinhl(0.0l);
1490 atanh(0.0);
1491 atanhf(0.0f);
1492 atanhl(0.0l);
1493 cbrt(0.0);
1494 cbrtf(0.0f);
1495 cbrtl(0.0l);
1496 copysign(0.0, 0.0);
1497 copysignf(0.0f, 0.0f);
1498 copysignl(0.0l, 0.0l);
1499 erf(0.0);
1500 erff(0.0f);
1501 erfl(0.0l);
1502 erfc(0.0);
1503 erfcf(0.0f);
1504 erfcl(0.0l);
1505 exp2(0.0);
1506 exp2f(0.0f);
1507 exp2l(0.0l);
1508 expm1(0.0);
1509 expm1f(0.0f);
1510 expm1l(0.0l);
1511 fdim(0.0, 0.0);
1512 fdimf(0.0f, 0.0f);
1513 fdiml(0.0l, 0.0l);
1514 fma(0.0, 0.0, 0.0);
1515 fmaf(0.0f, 0.0f, 0.0f);
1516 fmal(0.0l, 0.0l, 0.0l);
1517 fmax(0.0, 0.0);
1518 fmaxf(0.0f, 0.0f);
1519 fmaxl(0.0l, 0.0l);
1520 fmin(0.0, 0.0);
1521 fminf(0.0f, 0.0f);
1522 fminl(0.0l, 0.0l);
1523 hypot(0.0, 0.0);
1524 hypotf(0.0f, 0.0f);
1525 hypotl(0.0l, 0.0l);
1526 ilogb(0.0);
1527 ilogbf(0.0f);
1528 ilogbl(0.0l);
1529 lgamma(0.0);
1530 lgammaf(0.0f);
1531 lgammal(0.0l);
1532 llrint(0.0);
1533 llrintf(0.0f);
1534 llrintl(0.0l);
1535 llround(0.0);
1536 llroundf(0.0f);
1537 llroundl(0.0l);
1538 log1p(0.0);
1539 log1pf(0.0f);
1540 log1pl(0.0l);
1541 log2(0.0);
1542 log2f(0.0f);
1543 log2l(0.0l);
1544 logb(0.0);
1545 logbf(0.0f);
1546 logbl(0.0l);
1547 lrint(0.0);
1548 lrintf(0.0f);
1549 lrintl(0.0l);
1550 lround(0.0);
1551 lroundf(0.0f);
1552 lroundl(0.0l);
1553 nan(0);
1554 nanf(0);
1555 nanl(0);
1556 nearbyint(0.0);
1557 nearbyintf(0.0f);
1558 nearbyintl(0.0l);
1559 nextafter(0.0, 0.0);
1560 nextafterf(0.0f, 0.0f);
1561 nextafterl(0.0l, 0.0l);
1562 nexttoward(0.0, 0.0);
1563 nexttowardf(0.0f, 0.0f);
1564 nexttowardl(0.0l, 0.0l);
1565 remainder(0.0, 0.0);
1566 remainderf(0.0f, 0.0f);
1567 remainderl(0.0l, 0.0l);
1568 remquo(0.0, 0.0, 0);
1569 remquof(0.0f, 0.0f, 0);
1570 remquol(0.0l, 0.0l, 0);
1571 rint(0.0);
1572 rintf(0.0f);
1573 rintl(0.0l);
1574 round(0.0);
1575 roundf(0.0f);
1576 roundl(0.0l);
1577 scalbln(0.0, 0l);
1578 scalblnf(0.0f, 0l);
1579 scalblnl(0.0l, 0l);
1580 scalbn(0.0, 0);
1581 scalbnf(0.0f, 0);
1582 scalbnl(0.0l, 0);
1583 tgamma(0.0);
1584 tgammaf(0.0f);
1585 tgammal(0.0l);
1586 trunc(0.0);
1587 truncf(0.0f);
1588 truncl(0.0l);
6d26724a 1589 ],[glibcxx_cv_c99_math_tr1=yes], [glibcxx_cv_c99_math_tr1=no])
4f0de5dd 1590 ])
6d26724a
RW		 1591 AC_MSG_RESULT($glibcxx_cv_c99_math_tr1)
1592 if test x"$glibcxx_cv_c99_math_tr1" = x"yes"; then
4f0de5dd 1593 AC_DEFINE(_GLIBCXX_USE_C99_MATH_TR1, 1,
b329dd10
BK		 1594 [Define if C99 functions or macros in <math.h> should be imported
1595 in <tr1/cmath> in namespace std::tr1.])
4f0de5dd
PC		 1596 fi
1597
03bf3bc1 1598 # Check for the existence of <inttypes.h> functions (NB: doesn't make
a834e097 1599 # sense if the glibcxx_cv_c99_stdint_tr1 check fails, per C99, 7.8/1).
03bf3bc1 1600 ac_c99_inttypes_tr1=no;
6d26724a 1601 if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then
03bf3bc1
PC		 1602 AC_MSG_CHECKING([for ISO C99 support to TR1 in <inttypes.h>])
1603 AC_TRY_COMPILE([#include <inttypes.h>],
b329dd10
BK		 1604 [intmax_t i, numer, denom, base;
1605 const char* s;
1606 char** endptr;
1607 intmax_t ret = imaxabs(i);
1608 imaxdiv_t dret = imaxdiv(numer, denom);
1609 ret = strtoimax(s, endptr, base);
1610 uintmax_t uret = strtoumax(s, endptr, base);
1611 ],[ac_c99_inttypes_tr1=yes], [ac_c99_inttypes_tr1=no])
03bf3bc1 1612 fi
52a64bd3
PC		 1613 AC_MSG_RESULT($ac_c99_inttypes_tr1)
1614 if test x"$ac_c99_inttypes_tr1" = x"yes"; then
1615 AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_TR1, 1,
b329dd10
BK		 1616 [Define if C99 functions in <inttypes.h> should be imported in
1617 <tr1/cinttypes> in namespace std::tr1.])
52a64bd3
PC		 1618 fi
1619
a834e097
PC		 1620 # Check for the existence of whcar_t <inttypes.h> functions (NB: doesn't
1621 # make sense if the glibcxx_cv_c99_stdint_tr1 check fails, per C99, 7.8/1).
1622 ac_c99_inttypes_wchar_t_tr1=no;
1623 if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then
1624 AC_MSG_CHECKING([for wchar_t ISO C99 support to TR1 in <inttypes.h>])
1625 AC_TRY_COMPILE([#include <inttypes.h>],
b329dd10 1626 [intmax_t base;
a834e097 1627 const wchar_t* s;
b329dd10
BK		 1628 wchar_t** endptr;
1629 intmax_t ret = wcstoimax(s, endptr, base);
1630 uintmax_t uret = wcstoumax(s, endptr, base);
1631 ],[ac_c99_inttypes_wchar_t_tr1=yes],
a834e097
PC		 1632 [ac_c99_inttypes_wchar_t_tr1=no])
1633 fi
1634 AC_MSG_RESULT($ac_c99_inttypes_wchar_t_tr1)
1635 if test x"$ac_c99_inttypes_wchar_t_tr1" = x"yes"; then
1636 AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1, 1,
b329dd10 1637 [Define if wchar_t C99 functions in <inttypes.h> should be
a834e097
PC		 1638 imported in <tr1/cinttypes> in namespace std::tr1.])
1639 fi
1640
b329dd10 1641 # Check for the existence of the <stdbool.h> header.
1e41a98c
PC		 1642 AC_CHECK_HEADERS(stdbool.h)
1643
18f310b7 1644 CXXFLAGS="$ac_save_CXXFLAGS"
bd2bb1ea
PC		 1645 AC_LANG_RESTORE
1646])
1647
d8bc9819 1648dnl
9ce0a22e 1649dnl Check whether "/dev/random" and "/dev/urandom" are available for the
d8bc9819
PC		 1650dnl random_device of "TR1" (Chapter 5.1, "Random number generation").
1651dnl
1652AC_DEFUN([GLIBCXX_CHECK_RANDOM_TR1], [
1653
9ce0a22e 1654 AC_MSG_CHECKING([for "/dev/random" and "/dev/urandom" for TR1 random_device])
6d26724a 1655 AC_CACHE_VAL(glibcxx_cv_random_tr1, [
9ce0a22e
PC		 1656 if test -r /dev/random && test -r /dev/urandom; then
1657 glibcxx_cv_random_tr1=yes;
1658 else
1659 glibcxx_cv_random_tr1=no;
1660 fi
d8bc9819 1661 ])
6d26724a 1662 AC_MSG_RESULT($glibcxx_cv_random_tr1)
9ce0a22e 1663
6d26724a 1664 if test x"$glibcxx_cv_random_tr1" = x"yes"; then
d8bc9819 1665 AC_DEFINE(_GLIBCXX_USE_RANDOM_TR1, 1,
b329dd10 1666 [Define if /dev/random and /dev/urandom are available for
d8bc9819
PC		 1667 the random_device of TR1 (Chapter 5.1).])
1668 fi
1669
1670])
bd2bb1ea 1671
1814157e 1672dnl
ddc9c40d
PC		 1673dnl Compute the EOF, SEEK_CUR, and SEEK_END integer constants.
1674dnl
1675AC_DEFUN([GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS], [
1676
9b04fa91 1677 AC_CACHE_CHECK([for the value of EOF], glibcxx_cv_stdio_eof, [
ddc9c40d 1678 AC_COMPUTE_INT([glibcxx_cv_stdio_eof], [[EOF]],
b329dd10
BK		 1679 [#include <stdio.h>],
1680 [AC_MSG_ERROR([computing EOF failed])])
ddc9c40d 1681 ])
ddc9c40d 1682 AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_EOF, $glibcxx_cv_stdio_eof,
b329dd10 1683 [Define to the value of the EOF integer constant.])
ddc9c40d 1684
9b04fa91 1685 AC_CACHE_CHECK([for the value of SEEK_CUR], glibcxx_cv_stdio_seek_cur, [
ddc9c40d 1686 AC_COMPUTE_INT([glibcxx_cv_stdio_seek_cur], [[SEEK_CUR]],
b329dd10
BK		 1687 [#include <stdio.h>],
1688 [AC_MSG_ERROR([computing SEEK_CUR failed])])
ddc9c40d 1689 ])
ddc9c40d 1690 AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_SEEK_CUR, $glibcxx_cv_stdio_seek_cur,
b329dd10 1691 [Define to the value of the SEEK_CUR integer constant.])
ddc9c40d 1692
9b04fa91 1693 AC_CACHE_CHECK([for the value of SEEK_END], glibcxx_cv_stdio_seek_end, [
ddc9c40d 1694 AC_COMPUTE_INT([glibcxx_cv_stdio_seek_end], [[SEEK_END]],
b329dd10
BK		 1695 [#include <stdio.h>],
1696 [AC_MSG_ERROR([computing SEEK_END failed])])
ddc9c40d 1697 ])
ddc9c40d 1698 AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_SEEK_END, $glibcxx_cv_stdio_seek_end,
b329dd10 1699 [Define to the value of the SEEK_END integer constant.])
1814157e
PC		 1700])
1701
09fae88d
RO		 1702dnl
1703dnl Check whether required C++ overloads are present in <math.h>.
1704dnl
1705
1706AC_DEFUN([GLIBCXX_CHECK_MATH_PROTO], [
1707
1708 AC_LANG_SAVE
1709 AC_LANG_CPLUSPLUS
1710
1711 case "$host" in
1712 *-*-solaris2.*)
1713 # Solaris 8 FCS only had an overload for double std::abs(double) in
1714 # <iso/math_iso.h>. Patches 111721-04 (SPARC) and 112757-01 (x86)
1715 # introduced the full set also found from Solaris 9 onwards.
1716 AC_MSG_CHECKING([for float std::abs(float) overload])
1717 AC_CACHE_VAL(glibcxx_cv_abs_float, [
1718 AC_COMPILE_IFELSE([AC_LANG_SOURCE(
1719 [#include <math.h>
1720 namespace std {
1721 inline float abs(float __x)
1722 { return __builtin_fabsf(__x); }
1723 }
1724 ])],
1725 [glibcxx_cv_abs_float=no],
1726 [glibcxx_cv_abs_float=yes]
1727 )])
1728
1729 # autoheader cannot handle indented templates.
1730 AH_VERBATIM([__CORRECT_ISO_CPP_MATH_H_PROTO1],
1731 [/* Define if all C++ overloads are available in <math.h>. */
1732#if __cplusplus >= 199711L
1733#undef __CORRECT_ISO_CPP_MATH_H_PROTO1
1734#endif])
1735 AH_VERBATIM([__CORRECT_ISO_CPP_MATH_H_PROTO2],
1736 [/* Define if only double std::abs(double) is available in <math.h>. */
1737#if __cplusplus >= 199711L
1738#undef __CORRECT_ISO_CPP_MATH_H_PROTO2
1739#endif])
1740
1741 if test $glibcxx_cv_abs_float = yes; then
1742 AC_DEFINE(__CORRECT_ISO_CPP_MATH_H_PROTO1)
1743 else
1744 AC_DEFINE(__CORRECT_ISO_CPP_MATH_H_PROTO2)
1745 fi
1746 AC_MSG_RESULT($glibcxx_cv_abs_float)
1747 ;;
1748 esac
1749
1750 AC_LANG_RESTORE
1751])
1752
1753dnl
1754dnl Check whether required C++ overloads are present in <stdlib.h>.
1755dnl
1756
1757AC_DEFUN([GLIBCXX_CHECK_STDLIB_PROTO], [
1758
1759 AC_LANG_SAVE
1760 AC_LANG_CPLUSPLUS
1761
1762 case "$host" in
1763 *-*-solaris2.*)
1764 # Solaris 8 FCS lacked the overloads for long std::abs(long) and
1765 # ldiv_t std::div(long, long) in <iso/stdlib_iso.h>. Patches 109607-02
1766 # (SPARC) and 109608-02 (x86) introduced them.
1767 AC_MSG_CHECKING([for long std::abs(long) overload])
1768 AC_CACHE_VAL(glibcxx_cv_abs_long, [
1769 AC_COMPILE_IFELSE([AC_LANG_SOURCE(
1770 [#include <stdlib.h>
1771 namespace std {
1772 inline long
1773 abs(long __i) { return labs(__i); }
1774 }
1775 ])],
1776 [glibcxx_cv_abs_long=no],
1777 [glibcxx_cv_abs_long=yes]
1778 )])
1779
1780 # autoheader cannot handle indented templates.
1781 AH_VERBATIM([__CORRECT_ISO_CPP_STDLIB_H_PROTO],
1782 [/* Define if all C++ overloads are available in <stdlib.h>. */
1783#if __cplusplus >= 199711L
1784#undef __CORRECT_ISO_CPP_STDLIB_H_PROTO
1785#endif])
1786 if test $glibcxx_cv_abs_long = yes; then
1787 AC_DEFINE(__CORRECT_ISO_CPP_STDLIB_H_PROTO, 1)
1788 fi
1789 AC_MSG_RESULT($glibcxx_cv_abs_long)
1790 ;;
1791 esac
1792
1793 AC_LANG_RESTORE
1794])
1795
0646d8a3
BK		 1796dnl
1797dnl Check whether macros, etc are present for <system_error>
1798dnl
1799AC_DEFUN([GLIBCXX_CHECK_SYSTEM_ERROR], [
1800
6d26724a
RW		 1801m4_pushdef([n_syserr], [1])dnl
1802m4_foreach([syserr], [EOWNERDEAD, ENOTRECOVERABLE, ENOLINK, EPROTO, ENODATA,
70593ad2 1803 ENOSR, ENOSTR, ETIME, EBADMSG, ECANCELED,
edf2239b
KT		 1804 EOVERFLOW, ENOTSUP, EIDRM, ETXTBSY,
1805 ECHILD, ENOSPC, EPERM,
1806 ETIMEDOUT, EWOULDBLOCK],
6d26724a
RW		 1807[m4_pushdef([SYSERR], m4_toupper(syserr))dnl
1808AC_MSG_CHECKING([for syserr])
1809AC_CACHE_VAL([glibcxx_cv_system_error[]n_syserr], [
1810AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <errno.h>]],
1811 [int i = syserr;])],
1812 [glibcxx_cv_system_error[]n_syserr=yes],
1813 [glibcxx_cv_system_error[]n_syserr=no])
1814])
1815AC_MSG_RESULT([$glibcxx_cv_system_error[]n_syserr])
1816if test x"$glibcxx_cv_system_error[]n_syserr" = x"yes"; then
1817 AC_DEFINE([HAVE_]SYSERR, 1, [Define if ]syserr[ exists.])
1818fi
1819m4_define([n_syserr], m4_incr(n_syserr))dnl
1820m4_popdef([SYSERR])dnl
1821])
1822m4_popdef([n_syserr])dnl
0646d8a3
BK		 1823])
1824
0214010c 1825dnl
ff66d28f
PE		 1826dnl Check for what type of C headers to use.
1827dnl
1828dnl --enable-cheaders= [does stuff].
1829dnl --disable-cheaders [does not do anything, really].
1830dnl + Usage: GLIBCXX_ENABLE_CHEADERS[(DEFAULT)]
af13a7a6 1831dnl Where DEFAULT is either 'c' or 'c_std' or 'c_global'.
ff66d28f 1832dnl
f214923c 1833AC_DEFUN([GLIBCXX_ENABLE_CHEADERS], [
b453ace3 1834 GLIBCXX_ENABLE(cheaders,$1,[[[=KIND]]],
af13a7a6 1835 [construct "C" headers for g++], [permit c|c_std|c_global])
ff66d28f
PE		 1836 AC_MSG_NOTICE("C" header strategy set to $enable_cheaders)
1837
1838 C_INCLUDE_DIR='${glibcxx_srcdir}/include/'$enable_cheaders
1839
af13a7a6
BK		 1840 # Allow overrides to configure.host here.
1841 if test $enable_cheaders = c_global; then
1842 c_compatibility=yes
1843 fi
1844
ff66d28f 1845 AC_SUBST(C_INCLUDE_DIR)
92eabea2
PE		 1846 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C, test $enable_cheaders = c)
1847 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_STD, test $enable_cheaders = c_std)
af13a7a6 1848 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_GLOBAL, test $enable_cheaders = c_global)
92eabea2 1849 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_COMPATIBILITY, test $c_compatibility = yes)
ff66d28f
PE		 1850])
1851
1852
0214010c 1853dnl
ff66d28f
PE		 1854dnl Check for which locale library to use. The choice is mapped to
1855dnl a subdirectory of config/locale.
37bc6ca2 1856dnl
ff66d28f 1857dnl Default is generic.
0214010c 1858dnl
f214923c 1859AC_DEFUN([GLIBCXX_ENABLE_CLOCALE], [
b453ace3 1860 GLIBCXX_ENABLE(clocale,auto,[[[=MODEL]]],
ff66d28f 1861 [use MODEL for target locale package],
aeb4926a 1862 [permit generic|gnu|ieee_1003.1-2001|newlib|yes|no|auto])
0258dc3a
BK		 1863
1864 # Deal with gettext issues. Default to not using it (=no) until we detect
1865 # support for it later. Let the user turn it off via --e/d, but let that
1866 # default to on for easier handling.
1867 USE_NLS=no
1868 AC_ARG_ENABLE(nls,
1869 AC_HELP_STRING([--enable-nls],[use Native Language Support (default)]),
1870 [],
1871 [enable_nls=yes])
b329dd10 1872
aeb4926a 1873 # Either a known package, or "auto"
ff66d28f
PE		 1874 if test $enable_clocale = no || test $enable_clocale = yes; then
1875 enable_clocale=auto
1876 fi
0214010c
BK		 1877 enable_clocale_flag=$enable_clocale
1878
0258dc3a 1879 # Probe for locale model to use if none specified.
ff66d28f
PE		 1880 # Default to "generic".
1881 if test $enable_clocale_flag = auto; then
7d3998a4
PE		 1882 case ${target_os} in
1883 linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu)
b329dd10
BK		 1884 enable_clocale_flag=gnu
1885 ;;
a7f7b334 1886 darwin* | freebsd*)
b329dd10 1887 enable_clocale_flag=darwin
f9686024 1888 ;;
56deb74c 1889 *)
aeb4926a
YZ		 1890 if test x"$with_newlib" = x"yes"; then
1891 enable_clocale_flag=newlib
1892 else
1893 enable_clocale_flag=generic
1894 fi
b329dd10 1895 ;;
56deb74c
BK		 1896 esac
1897 fi
1898
0258dc3a
BK		 1899 # Sanity check model, and test for special functionality.
1900 if test $enable_clocale_flag = gnu; then
1901 AC_EGREP_CPP([_GLIBCXX_ok], [
1902 #include <features.h>
22b36782 1903 #if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined(__UCLIBC__)
0258dc3a
BK		 1904 _GLIBCXX_ok
1905 #endif
1906 ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
1907
0258dc3a 1908 # Set it to scream when it hurts.
b329dd10 1909 ac_save_CFLAGS="$CFLAGS"
0258dc3a
BK		 1910 CFLAGS="-Wimplicit-function-declaration -Werror"
1911
1912 # Use strxfrm_l if available.
1913 AC_TRY_COMPILE([#define _GNU_SOURCE 1
1914 #include <string.h>
1915 #include <locale.h>],
b329dd10
BK		 1916 [char s[128]; __locale_t loc; strxfrm_l(s, "C", 5, loc);],
1917 AC_DEFINE(HAVE_STRXFRM_L, 1,
1918 [Define if strxfrm_l is available in <string.h>.]),)
1919
0258dc3a
BK		 1920 # Use strerror_l if available.
1921 AC_TRY_COMPILE([#define _GNU_SOURCE 1
1922 #include <string.h>
1923 #include <locale.h>],
b329dd10
BK		 1924 [__locale_t loc; strerror_l(5, loc);],
1925 AC_DEFINE(HAVE_STRERROR_L, 1,
1926 [Define if strerror_l is available in <string.h>.]),)
0258dc3a
BK		 1927
1928 CFLAGS="$ac_save_CFLAGS"
1929 fi
1930
1931 # Perhaps use strerror_r if available, and strerror_l isn't.
b329dd10 1932 ac_save_CFLAGS="$CFLAGS"
0258dc3a
BK		 1933 CFLAGS="-Wimplicit-function-declaration -Werror"
1934 AC_TRY_COMPILE([#define _GNU_SOURCE 1
1935 #include <string.h>
1936 #include <locale.h>],
b329dd10
BK		 1937 [char s[128]; strerror_r(5, s, 128);],
1938 AC_DEFINE(HAVE_STRERROR_R, 1,
1939 [Define if strerror_r is available in <string.h>.]),)
0258dc3a 1940 CFLAGS="$ac_save_CFLAGS"
501e321e 1941
ff66d28f 1942 # Set configure bits for specified locale package
0258dc3a 1943 AC_MSG_CHECKING([for C locale to use])
ff66d28f
PE		 1944 case ${enable_clocale_flag} in
1945 generic)
33590f13
BK		 1946 AC_MSG_RESULT(generic)
1947
1fa4bed7
BK		 1948 CLOCALE_H=config/locale/generic/c_locale.h
1949 CLOCALE_CC=config/locale/generic/c_locale.cc
38cca750 1950 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1fa4bed7
BK		 1951 CCOLLATE_CC=config/locale/generic/collate_members.cc
1952 CCTYPE_CC=config/locale/generic/ctype_members.cc
1953 CMESSAGES_H=config/locale/generic/messages_members.h
1954 CMESSAGES_CC=config/locale/generic/messages_members.cc
1955 CMONEY_CC=config/locale/generic/monetary_members.cc
1956 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1c26d8fd 1957 CTIME_H=config/locale/generic/time_members.h
1fa4bed7 1958 CTIME_CC=config/locale/generic/time_members.cc
89671b70 1959 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
33590f13 1960 ;;
f9686024 1961 darwin)
a7f7b334 1962 AC_MSG_RESULT(darwin or freebsd)
f9686024
GK		 1963
1964 CLOCALE_H=config/locale/generic/c_locale.h
1965 CLOCALE_CC=config/locale/generic/c_locale.cc
f9686024
GK		 1966 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1967 CCOLLATE_CC=config/locale/generic/collate_members.cc
1968 CCTYPE_CC=config/locale/darwin/ctype_members.cc
1969 CMESSAGES_H=config/locale/generic/messages_members.h
1970 CMESSAGES_CC=config/locale/generic/messages_members.cc
1971 CMONEY_CC=config/locale/generic/monetary_members.cc
1972 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1973 CTIME_H=config/locale/generic/time_members.h
1974 CTIME_CC=config/locale/generic/time_members.cc
1975 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1976 ;;
b329dd10 1977
ff66d28f 1978 gnu)
0214010c 1979 AC_MSG_RESULT(gnu)
33590f13
BK		 1980
1981 # Declare intention to use gettext, and add support for specific
1982 # languages.
248a9163 1983 # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT
33590f13 1984 ALL_LINGUAS="de fr"
501e321e 1985
248a9163 1986 # Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
501e321e
BK		 1987 AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
1988 if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
b329dd10 1989 USE_NLS=yes
501e321e 1990 fi
33590f13
BK		 1991 # Export the build objects.
1992 for ling in $ALL_LINGUAS; do \
b329dd10
BK		 1993 glibcxx_MOFILES="$glibcxx_MOFILES $ling.mo"; \
1994 glibcxx_POFILES="$glibcxx_POFILES $ling.po"; \
33590f13 1995 done
3d7c150e
BK		 1996 AC_SUBST(glibcxx_MOFILES)
1997 AC_SUBST(glibcxx_POFILES)
33590f13 1998
1fa4bed7
BK		 1999 CLOCALE_H=config/locale/gnu/c_locale.h
2000 CLOCALE_CC=config/locale/gnu/c_locale.cc
38cca750 2001 CCODECVT_CC=config/locale/gnu/codecvt_members.cc
1fa4bed7
BK		 2002 CCOLLATE_CC=config/locale/gnu/collate_members.cc
2003 CCTYPE_CC=config/locale/gnu/ctype_members.cc
2004 CMESSAGES_H=config/locale/gnu/messages_members.h
2005 CMESSAGES_CC=config/locale/gnu/messages_members.cc
2006 CMONEY_CC=config/locale/gnu/monetary_members.cc
2007 CNUMERIC_CC=config/locale/gnu/numeric_members.cc
1c26d8fd 2008 CTIME_H=config/locale/gnu/time_members.h
1fa4bed7 2009 CTIME_CC=config/locale/gnu/time_members.cc
89671b70 2010 CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h
0214010c 2011 ;;
ff66d28f 2012 ieee_1003.1-2001)
7f78b6ca 2013 AC_MSG_RESULT(IEEE 1003.1)
33590f13 2014
1fa4bed7
BK		 2015 CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
2016 CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
38cca750 2017 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1fa4bed7
BK		 2018 CCOLLATE_CC=config/locale/generic/collate_members.cc
2019 CCTYPE_CC=config/locale/generic/ctype_members.cc
2020 CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h
2021 CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc
2022 CMONEY_CC=config/locale/generic/monetary_members.cc
2023 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1c26d8fd 2024 CTIME_H=config/locale/generic/time_members.h
1fa4bed7 2025 CTIME_CC=config/locale/generic/time_members.cc
89671b70 2026 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
0214010c 2027 ;;
aeb4926a
YZ		 2028 newlib)
2029 AC_MSG_RESULT(newlib)
2030
2031 CLOCALE_H=config/locale/generic/c_locale.h
2032 CLOCALE_CC=config/locale/generic/c_locale.cc
2033 CCODECVT_CC=config/locale/generic/codecvt_members.cc
2034 CCOLLATE_CC=config/locale/generic/collate_members.cc
2035 CCTYPE_CC=config/locale/newlib/ctype_members.cc
2036 CMESSAGES_H=config/locale/generic/messages_members.h
2037 CMESSAGES_CC=config/locale/generic/messages_members.cc
2038 CMONEY_CC=config/locale/generic/monetary_members.cc
2039 CNUMERIC_CC=config/locale/generic/numeric_members.cc
2040 CTIME_H=config/locale/generic/time_members.h
2041 CTIME_CC=config/locale/generic/time_members.cc
2042 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
2043 ;;
0214010c
BK		 2044 esac
2045
33590f13
BK		 2046 # This is where the testsuite looks for locale catalogs, using the
2047 # -DLOCALEDIR define during testsuite compilation.
3d7c150e
BK		 2048 glibcxx_localedir=${glibcxx_builddir}/po/share/locale
2049 AC_SUBST(glibcxx_localedir)
33590f13 2050
7f78b6ca
PE		 2051 # A standalone libintl (e.g., GNU libintl) may be in use.
2052 if test $USE_NLS = yes; then
c67528fe
PE		 2053 AC_CHECK_HEADERS([libintl.h], [], USE_NLS=no)
2054 AC_SEARCH_LIBS(gettext, intl, [], USE_NLS=no)
2055 fi
2056 if test $USE_NLS = yes; then
b329dd10
BK		 2057 AC_DEFINE(_GLIBCXX_USE_NLS, 1,
2058 [Define if NLS translations are to be used.])
7f78b6ca
PE		 2059 fi
2060
4e10943d 2061 AC_SUBST(USE_NLS)
4a9d5109 2062 AC_SUBST(CLOCALE_H)
33590f13 2063 AC_SUBST(CMESSAGES_H)
6aa43d99
BK		 2064 AC_SUBST(CCODECVT_CC)
2065 AC_SUBST(CCOLLATE_CC)
2066 AC_SUBST(CCTYPE_CC)
2067 AC_SUBST(CMESSAGES_CC)
2068 AC_SUBST(CMONEY_CC)
2069 AC_SUBST(CNUMERIC_CC)
1c26d8fd 2070 AC_SUBST(CTIME_H)
6aa43d99
BK		 2071 AC_SUBST(CTIME_CC)
2072 AC_SUBST(CLOCALE_CC)
2073 AC_SUBST(CLOCALE_INTERNAL_H)
0214010c
BK		 2074])
2075
2076
8b0d6051
BK		 2077dnl
2078dnl Check for which std::allocator base class to use. The choice is
2079dnl mapped from a subdirectory of include/ext.
2080dnl
2081dnl Default is new.
2082dnl
2083AC_DEFUN([GLIBCXX_ENABLE_ALLOCATOR], [
347669a0 2084 AC_MSG_CHECKING([for std::allocator base class])
b453ace3 2085 GLIBCXX_ENABLE(libstdcxx-allocator,auto,[[[=KIND]]],
8b0d6051 2086 [use KIND for target std::allocator base],
29d4adf4 2087 [permit new|malloc|mt|bitmap|pool|yes|no|auto])
7d3998a4 2088
8b0d6051
BK		 2089 # If they didn't use this option switch, or if they specified --enable
2090 # with no specific model, we'll have to look for one. If they
2091 # specified --disable (???), do likewise.
7d3998a4
PE		 2092 if test $enable_libstdcxx_allocator = no ||
2093 test $enable_libstdcxx_allocator = yes;
2094 then
8b0d6051
BK		 2095 enable_libstdcxx_allocator=auto
2096 fi
2097
780028b6
BK		 2098 # Either a known package, or "auto". Auto implies the default choice
2099 # for a particular platform.
8b0d6051
BK		 2100 enable_libstdcxx_allocator_flag=$enable_libstdcxx_allocator
2101
2102 # Probe for host-specific support if no specific model is specified.
2103 # Default to "new".
2104 if test $enable_libstdcxx_allocator_flag = auto; then
2105 case ${target_os} in
780028b6 2106 linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu)
b329dd10
BK		 2107 enable_libstdcxx_allocator_flag=new
2108 ;;
8b0d6051 2109 *)
b329dd10
BK		 2110 enable_libstdcxx_allocator_flag=new
2111 ;;
8b0d6051
BK		 2112 esac
2113 fi
2114 AC_MSG_RESULT($enable_libstdcxx_allocator_flag)
b329dd10 2115
8b0d6051
BK		 2116
2117 # Set configure bits for specified locale package
2118 case ${enable_libstdcxx_allocator_flag} in
2119 bitmap)
2120 ALLOCATOR_H=config/allocator/bitmap_allocator_base.h
2121 ALLOCATOR_NAME=__gnu_cxx::bitmap_allocator
2122 ;;
2123 malloc)
2124 ALLOCATOR_H=config/allocator/malloc_allocator_base.h
2125 ALLOCATOR_NAME=__gnu_cxx::malloc_allocator
2126 ;;
2127 mt)
2128 ALLOCATOR_H=config/allocator/mt_allocator_base.h
2129 ALLOCATOR_NAME=__gnu_cxx::__mt_alloc
2130 ;;
2131 new)
2132 ALLOCATOR_H=config/allocator/new_allocator_base.h
2133 ALLOCATOR_NAME=__gnu_cxx::new_allocator
2134 ;;
29d4adf4
PC		 2135 pool)
2136 ALLOCATOR_H=config/allocator/pool_allocator_base.h
2137 ALLOCATOR_NAME=__gnu_cxx::__pool_alloc
b329dd10 2138 ;;
8b0d6051
BK		 2139 esac
2140
2141 AC_SUBST(ALLOCATOR_H)
2142 AC_SUBST(ALLOCATOR_NAME)
2143])
2144
2145
b2dad0e3 2146dnl
ff66d28f
PE		 2147dnl Check for whether the Boost-derived checks should be turned on.
2148dnl
2149dnl --enable-concept-checks turns them on.
2150dnl --disable-concept-checks leaves them off.
2151dnl + Usage: GLIBCXX_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
2152dnl Where DEFAULT is either `yes' or `no'.
2153dnl
f214923c 2154AC_DEFUN([GLIBCXX_ENABLE_CONCEPT_CHECKS], [
ff66d28f
PE		 2155 GLIBCXX_ENABLE(concept-checks,$1,,[use Boost-derived template checks])
2156 if test $enable_concept_checks = yes; then
4651e622 2157 AC_DEFINE(_GLIBCXX_CONCEPT_CHECKS, 1,
b329dd10 2158 [Define to use concept checking code from the boost libraries.])
ff66d28f
PE		 2159 fi
2160])
2161
ed4f96af
BK		 2162dnl
2163dnl Use extern templates.
2164dnl
2165dnl --enable-extern-template defines _GLIBCXX_EXTERN_TEMPLATE to 1
2166dnl --disable-extern-template defines _GLIBCXX_EXTERN_TEMPLATE to 0
2167
2168dnl + Usage: GLIBCXX_ENABLE_TEMPLATE[(DEFAULT)]
2169dnl Where DEFAULT is `yes' or `no'.
2170dnl
2171AC_DEFUN([GLIBCXX_ENABLE_EXTERN_TEMPLATE], [
2172
2173 GLIBCXX_ENABLE(extern-template,$1,,[enable extern template])
2174
2175 AC_MSG_CHECKING([for extern template support])
2176 AC_MSG_RESULT([$enable_extern_template])
2177
2178 GLIBCXX_CONDITIONAL(ENABLE_EXTERN_TEMPLATE, test $enable_extern_template = yes)
2179])
2180
c2ba9709
JS		 2181dnl
2182dnl Check for parallel mode pre-requisites, including OpenMP support.
2183dnl
2184dnl + Usage: GLIBCXX_ENABLE_PARALLEL
2185dnl
2186AC_DEFUN([GLIBCXX_ENABLE_PARALLEL], [
2187
2188 enable_parallel=no;
6995087d 2189
0aec205c
BK		 2190 # See if configured libgomp/omp.h exists. (libgomp may be in
2191 # noconfigdirs but not explicitly disabled.)
aae29963 2192 if echo " ${TARGET_CONFIGDIRS} " | grep " libgomp " > /dev/null 2>&1 ; then
0aec205c
BK		 2193 enable_parallel=yes;
2194 else
aae29963 2195 AC_MSG_NOTICE([target-libgomp not built])
c2ba9709
JS		 2196 fi
2197
2198 AC_MSG_CHECKING([for parallel mode support])
2199 AC_MSG_RESULT([$enable_parallel])
2200 GLIBCXX_CONDITIONAL(ENABLE_PARALLEL, test $enable_parallel = yes)
2201])
2202
ff66d28f 2203
b2dad0e3 2204dnl
ff66d28f 2205dnl Check for which I/O library to use: stdio, or something specific.
37bc6ca2 2206dnl
ff66d28f 2207dnl Default is stdio.
b2dad0e3 2208dnl
f214923c 2209AC_DEFUN([GLIBCXX_ENABLE_CSTDIO], [
ff66d28f 2210 AC_MSG_CHECKING([for underlying I/O to use])
b453ace3 2211 GLIBCXX_ENABLE(cstdio,stdio,[[[=PACKAGE]]],
ff66d28f
PE		 2212 [use target-specific I/O package], [permit stdio])
2213
2214 # Now that libio has been removed, you can have any color you want as long
2215 # as it's black. This is one big no-op until other packages are added, but
2216 # showing the framework never hurts.
2217 case ${enable_cstdio} in
2218 stdio)
33590f13
BK		 2219 CSTDIO_H=config/io/c_io_stdio.h
2220 BASIC_FILE_H=config/io/basic_file_stdio.h
2221 BASIC_FILE_CC=config/io/basic_file_stdio.cc
9717c75c 2222 AC_MSG_RESULT(stdio)
dd75251f 2223 ;;
b2dad0e3 2224 esac
cc5112c9 2225
4a9d5109
SW		 2226 AC_SUBST(CSTDIO_H)
2227 AC_SUBST(BASIC_FILE_H)
6aa43d99 2228 AC_SUBST(BASIC_FILE_CC)
b2dad0e3
BK		 2229])
2230
2231
9e57d5ca 2232dnl
ff66d28f 2233dnl Check for "unusual" flags to pass to the compiler while building.
9e57d5ca 2234dnl
ff66d28f
PE		 2235dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
2236dnl experimental flags such as -fpch, -fIMI, -Dfloat=char, etc.
2237dnl --disable-cxx-flags passes nothing.
2238dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
2239dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
2240dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
2241dnl + Usage: GLIBCXX_ENABLE_CXX_FLAGS(default flags)
2242dnl If "default flags" is an empty string, the effect is the same
2243dnl as --disable or --enable=no.
44f0760e 2244dnl
f214923c 2245AC_DEFUN([GLIBCXX_ENABLE_CXX_FLAGS], [dnl
ff66d28f
PE		 2246 AC_MSG_CHECKING([for extra compiler flags for building])
2247 GLIBCXX_ENABLE(cxx-flags,$1,[=FLAGS],
2248 [pass compiler FLAGS when building library],
2249 [case "x$enable_cxx_flags" in
2250 xno | x) enable_cxx_flags= ;;
2251 x-*) ;;
2252 *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;;
2253 esac])
2254
2255 # Run through flags (either default or command-line) and set anything
2256 # extra (e.g., #defines) that must accompany particular g++ options.
2257 if test -n "$enable_cxx_flags"; then
2258 for f in $enable_cxx_flags; do
2259 case "$f" in
b329dd10
BK		 2260 -fhonor-std) ;;
2261 -*) ;;
2262 *) # and we're trying to pass /what/ exactly?
2263 AC_MSG_ERROR([compiler flags start with a -]) ;;
ff66d28f
PE		 2264 esac
2265 done
44f0760e
BK		 2266 fi
2267
ff66d28f
PE		 2268 EXTRA_CXX_FLAGS="$enable_cxx_flags"
2269 AC_MSG_RESULT($EXTRA_CXX_FLAGS)
2270 AC_SUBST(EXTRA_CXX_FLAGS)
9e57d5ca
BK		 2271])
2272
ff66d28f 2273
ff66d28f
PE		 2274dnl
2275dnl Check to see if debugging libraries are to be built.
2276dnl
2277dnl --enable-libstdcxx-debug
2278dnl builds a separate set of debugging libraries in addition to the
2279dnl normal (shared, static) libstdc++ binaries.
2280dnl
2281dnl --disable-libstdcxx-debug
2282dnl builds only one (non-debug) version of libstdc++.
2283dnl
2284dnl --enable-libstdcxx-debug-flags=FLAGS
2285dnl iff --enable-debug == yes, then use FLAGS to build the debug library.
2286dnl
2287dnl + Usage: GLIBCXX_ENABLE_DEBUG[(DEFAULT)]
2288dnl Where DEFAULT is either `yes' or `no'.
2289dnl
f214923c 2290AC_DEFUN([GLIBCXX_ENABLE_DEBUG], [
ff66d28f
PE		 2291 AC_MSG_CHECKING([for additional debug build])
2292 GLIBCXX_ENABLE(libstdcxx-debug,$1,,[build extra debug library])
2293 AC_MSG_RESULT($enable_libstdcxx_debug)
92eabea2 2294 GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_DEBUG, test $enable_libstdcxx_debug = yes)
b2dad0e3
BK		 2295])
2296
2297
52a11cbf 2298dnl
ff66d28f 2299dnl Check for explicit debug flags.
52a11cbf 2300dnl
ff66d28f
PE		 2301dnl --enable-libstdcxx-debug-flags='-O1'
2302dnl is a general method for passing flags to be used when
2303dnl building debug libraries with --enable-debug.
52a11cbf 2304dnl
ff66d28f
PE		 2305dnl --disable-libstdcxx-debug-flags does nothing.
2306dnl + Usage: GLIBCXX_ENABLE_DEBUG_FLAGS(default flags)
2307dnl If "default flags" is an empty string, the effect is the same
2308dnl as --disable or --enable=no.
2309dnl
f214923c 2310AC_DEFUN([GLIBCXX_ENABLE_DEBUG_FLAGS], [
ff66d28f
PE		 2311 GLIBCXX_ENABLE(libstdcxx-debug-flags,[$1],[=FLAGS],
2312 [pass compiler FLAGS when building debug library],
2313 [case "x$enable_libstdcxx_debug_flags" in
2314 xno | x) enable_libstdcxx_debug_flags= ;;
2315 x-*) ;;
2316 *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;;
2317 esac])
2318
2319 # Option parsed, now set things appropriately
2320 DEBUG_FLAGS="$enable_libstdcxx_debug_flags"
2321 AC_SUBST(DEBUG_FLAGS)
2322
2323 AC_MSG_NOTICE([Debug build flags set to $DEBUG_FLAGS])
52a11cbf
RH		 2324])
2325
2326
92eabea2
PE		 2327dnl
2328dnl Check if the user only wants a freestanding library implementation.
2329dnl
2330dnl --disable-hosted-libstdcxx will turn off most of the library build,
2331dnl installing only the headers required by [17.4.1.3] and the language
2332dnl support library. More than that will be built (to keep the Makefiles
2333dnl conveniently clean), but not installed.
2334dnl
2335dnl Sets:
2336dnl is_hosted (yes/no)
2337dnl
3660e02f
PE		 2338dnl Defines:
2339dnl _GLIBCXX_HOSTED (always defined, either to 1 or 0)
2340dnl
f214923c 2341AC_DEFUN([GLIBCXX_ENABLE_HOSTED], [
92eabea2
PE		 2342 AC_ARG_ENABLE([hosted-libstdcxx],
2343 AC_HELP_STRING([--disable-hosted-libstdcxx],
b329dd10 2344 [only build freestanding C++ runtime support]),,
4c24b21a 2345 [case "$host" in
b329dd10 2346 arm*-*-symbianelf*)
4c24b21a
MM		 2347 enable_hosted_libstdcxx=no
2348 ;;
b329dd10 2349 *)
4c24b21a
MM		 2350 enable_hosted_libstdcxx=yes
2351 ;;
2352 esac])
92eabea2
PE		 2353 if test "$enable_hosted_libstdcxx" = no; then
2354 AC_MSG_NOTICE([Only freestanding libraries will be built])
2355 is_hosted=no
3660e02f 2356 hosted_define=0
92eabea2
PE		 2357 enable_abi_check=no
2358 enable_libstdcxx_pch=no
2359 else
2360 is_hosted=yes
3660e02f 2361 hosted_define=1
92eabea2
PE		 2362 fi
2363 GLIBCXX_CONDITIONAL(GLIBCXX_HOSTED, test $is_hosted = yes)
3660e02f
PE		 2364 AC_DEFINE_UNQUOTED(_GLIBCXX_HOSTED, $hosted_define,
2365 [Define to 1 if a full hosted library is built, or 0 if freestanding.])
92eabea2
PE		 2366])
2367
2368
6c3a9f72 2369dnl
347669a0 2370dnl Check for template specializations for the 'long long' type.
22248545
PE		 2371dnl The result determines only whether 'long long' I/O is enabled; things
2372dnl like numeric_limits<> specializations are always available.
6c3a9f72 2373dnl
3d7c150e
BK		 2374dnl --enable-long-long defines _GLIBCXX_USE_LONG_LONG
2375dnl --disable-long-long leaves _GLIBCXX_USE_LONG_LONG undefined
2376dnl + Usage: GLIBCXX_ENABLE_LONG_LONG[(DEFAULT)]
ff66d28f 2377dnl Where DEFAULT is either `yes' or `no'.
6c3a9f72 2378dnl
f214923c 2379AC_DEFUN([GLIBCXX_ENABLE_LONG_LONG], [
347669a0 2380 GLIBCXX_ENABLE(long-long,$1,,[enable template specializations for 'long long'])
ff66d28f 2381 if test $enable_long_long = yes; then
b329dd10
BK		 2382 AC_DEFINE(_GLIBCXX_USE_LONG_LONG, 1,
2383 [Define if code specialized for long long should be used.])
6c3a9f72 2384 fi
347669a0
BK		 2385 AC_MSG_CHECKING([for enabled long long specializations])
2386 AC_MSG_RESULT([$enable_long_long])
2387])
2388
2389
4cdc8761
BK		 2390dnl
2391dnl Check for decimal floating point.
2392dnl See:
2393dnl http://gcc.gnu.org/onlinedocs/gcc/Decimal-Float.html#Decimal-Float
2394dnl
2395dnl This checks to see if the host supports decimal floating point types.
2396dnl
2397dnl Defines:
2398dnl _GLIBCXX_USE_DECIMAL_FLOAT
2399dnl
2400AC_DEFUN([GLIBCXX_ENABLE_DECIMAL_FLOAT], [
2401
2402 # Fake what AC_TRY_COMPILE does, without linking as this is
2403 # unnecessary for this test.
2404
2405 cat > conftest.$ac_ext << EOF
2406[#]line __oline__ "configure"
2407int main()
2408{
2409 _Decimal32 d1;
2410 _Decimal64 d2;
2411 _Decimal128 d3;
2412 return 0;
2413}
2414EOF
2415
2416 AC_MSG_CHECKING([for ISO/IEC TR 24733 ])
2417 if AC_TRY_EVAL(ac_compile); then
2418 AC_DEFINE(_GLIBCXX_USE_DECIMAL_FLOAT, 1,
2419 [Define if ISO/IEC TR 24733 decimal floating point types are supported on this host.])
2420 enable_dfp=yes
2421 else
2422 enable_dfp=no
2423 fi
2424 AC_MSG_RESULT($enable_dfp)
2425 rm -f conftest*
2426])
2427
6d585f01
PC		 2428dnl
2429dnl Check for GNU 128-bit integer and floating point types.
2430dnl
2431dnl Note: also checks that the types aren't standard types.
2432dnl
2433dnl Defines:
2434dnl _GLIBCXX_USE_INT128
2435dnl _GLIBCXX_USE_FLOAT128
2436dnl
2437AC_DEFUN([GLIBCXX_ENABLE_INT128_FLOAT128], [
2438
2439 AC_LANG_SAVE
2440 AC_LANG_CPLUSPLUS
2441
2442 # Fake what AC_TRY_COMPILE does, without linking as this is
2443 # unnecessary for this test.
2444
2445 cat > conftest.$ac_ext << EOF
2446[#]line __oline__ "configure"
2447template<typename T1, typename T2>
2448 struct same
2449 { typedef T2 type; };
2450
2451template<typename T>
2452 struct same<T, T>;
2453
2454int main()
2455{
fd1e62c2
PC		 2456 typename same<long, __int128>::type i1;
2457 typename same<long long, __int128>::type i2;
6d585f01
PC		 2458}
2459EOF
2460
fd1e62c2 2461 AC_MSG_CHECKING([for __int128])
6d585f01
PC		 2462 if AC_TRY_EVAL(ac_compile); then
2463 AC_DEFINE(_GLIBCXX_USE_INT128, 1,
fd1e62c2 2464 [Define if __int128 is supported on this host.])
6d585f01
PC		 2465 enable_int128=yes
2466 else
2467 enable_int128=no
2468 fi
2469 AC_MSG_RESULT($enable_int128)
2470 rm -f conftest*
2471
2472 cat > conftest.$ac_ext << EOF
2473[#]line __oline__ "configure"
2474template<typename T1, typename T2>
2475 struct same
2476 { typedef T2 type; };
2477
2478template<typename T>
2479 struct same<T, T>;
2480
2481int main()
2482{
2483 typename same<double, __float128>::type f1;
2484 typename same<long double, __float128>::type f2;
2485}
2486EOF
2487
2488 AC_MSG_CHECKING([for __float128])
2489 if AC_TRY_EVAL(ac_compile); then
2490 AC_DEFINE(_GLIBCXX_USE_FLOAT128, 1,
2491 [Define if __float128 is supported on this host.])
2492 enable_float128=yes
2493 else
2494 enable_float128=no
2495 fi
2496 AC_MSG_RESULT($enable_float128)
2497 rm -f conftest*
2498
2499 AC_LANG_RESTORE
2500])
2501
347669a0
BK		 2502dnl
2503dnl Check for template specializations for the 'wchar_t' type.
2504dnl
2505dnl --enable-wchar_t defines _GLIBCXX_USE_WCHAR_T
2506dnl --disable-wchar_t leaves _GLIBCXX_USE_WCHAR_T undefined
2507dnl + Usage: GLIBCXX_ENABLE_WCHAR_T[(DEFAULT)]
2508dnl Where DEFAULT is either `yes' or `no'.
2509dnl
8a9b2875 2510dnl Necessary support must also be present.
347669a0
BK		 2511dnl
2512AC_DEFUN([GLIBCXX_ENABLE_WCHAR_T], [
2513 GLIBCXX_ENABLE(wchar_t,$1,,[enable template specializations for 'wchar_t'])
8a9b2875
PC		 2514
2515 # Test wchar.h for mbstate_t, which is needed for char_traits and fpos.
2516 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
2517 AC_MSG_CHECKING([for mbstate_t])
2518 AC_TRY_COMPILE([#include <wchar.h>],
2519 [mbstate_t teststate;],
2520 have_mbstate_t=yes, have_mbstate_t=no)
2521 AC_MSG_RESULT($have_mbstate_t)
2522 if test x"$have_mbstate_t" = xyes; then
2523 AC_DEFINE(HAVE_MBSTATE_T,1,[Define if mbstate_t exists in wchar.h.])
2524 fi
2525
d814595c
PC		 2526 # Test it always, for use in GLIBCXX_ENABLE_C99, together with
2527 # ac_has_wchar_h.
2528 AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
b329dd10 2529
8a9b2875
PC		 2530 if test x"$enable_wchar_t" = x"yes"; then
2531
2532 AC_LANG_SAVE
2533 AC_LANG_CPLUSPLUS
b329dd10 2534
8a9b2875
PC		 2535 if test x"$ac_has_wchar_h" = xyes &&
2536 test x"$ac_has_wctype_h" = xyes; then
2537 AC_TRY_COMPILE([#include <wchar.h>
b329dd10
BK		 2538 #include <stddef.h>
2539 wint_t i;
8a9b2875
PC		 2540 long l = WEOF;
2541 long j = WCHAR_MIN;
2542 long k = WCHAR_MAX;
b329dd10
BK		 2543 namespace test
2544 {
8a9b2875
PC		 2545 using ::btowc;
2546 using ::fgetwc;
2547 using ::fgetws;
2548 using ::fputwc;
2549 using ::fputws;
2550 using ::fwide;
b329dd10 2551 using ::fwprintf;
8a9b2875
PC		 2552 using ::fwscanf;
2553 using ::getwc;
2554 using ::getwchar;
b329dd10
BK		 2555 using ::mbrlen;
2556 using ::mbrtowc;
2557 using ::mbsinit;
2558 using ::mbsrtowcs;
8a9b2875
PC		 2559 using ::putwc;
2560 using ::putwchar;
b329dd10
BK		 2561 using ::swprintf;
2562 using ::swscanf;
8a9b2875 2563 using ::ungetwc;
b329dd10
BK		 2564 using ::vfwprintf;
2565 using ::vswprintf;
2566 using ::vwprintf;
2567 using ::wcrtomb;
2568 using ::wcscat;
2569 using ::wcschr;
2570 using ::wcscmp;
2571 using ::wcscoll;
2572 using ::wcscpy;
2573 using ::wcscspn;
2574 using ::wcsftime;
8a9b2875 2575 using ::wcslen;
b329dd10
BK		 2576 using ::wcsncat;
2577 using ::wcsncmp;
2578 using ::wcsncpy;
8a9b2875 2579 using ::wcspbrk;
b329dd10
BK		 2580 using ::wcsrchr;
2581 using ::wcsrtombs;
2582 using ::wcsspn;
8a9b2875 2583 using ::wcsstr;
b329dd10
BK		 2584 using ::wcstod;
2585 using ::wcstok;
8a9b2875 2586 using ::wcstol;
b329dd10
BK		 2587 using ::wcstoul;
2588 using ::wcsxfrm;
2589 using ::wctob;
8a9b2875
PC		 2590 using ::wmemchr;
2591 using ::wmemcmp;
2592 using ::wmemcpy;
2593 using ::wmemmove;
2594 using ::wmemset;
b329dd10
BK		 2595 using ::wprintf;
2596 using ::wscanf;
8a9b2875
PC		 2597 }
2598 ],[],[], [enable_wchar_t=no])
2599 else
2600 enable_wchar_t=no
2601 fi
2602
2603 AC_LANG_RESTORE
2604 fi
2605
2606 if test x"$enable_wchar_t" = x"yes"; then
4651e622 2607 AC_DEFINE(_GLIBCXX_USE_WCHAR_T, 1,
b329dd10 2608 [Define if code specialized for wchar_t should be used.])
347669a0 2609 fi
8a9b2875 2610
347669a0
BK		 2611 AC_MSG_CHECKING([for enabled wchar_t specializations])
2612 AC_MSG_RESULT([$enable_wchar_t])
6c3a9f72
BK		 2613])
2614
2615
99246c90 2616dnl
ff66d28f 2617dnl Check to see if building and using a C++ precompiled header can be done.
72ed2836 2618dnl
ff66d28f
PE		 2619dnl --enable-libstdcxx-pch=yes
2620dnl default, this shows intent to use stdc++.h.gch If it looks like it
2621dnl may work, after some light-hearted attempts to puzzle out compiler
2622dnl support, flip bits on in include/Makefile.am
43ba4a58 2623dnl
ff66d28f
PE		 2624dnl --disable-libstdcxx-pch
2625dnl turns off attempts to use or build stdc++.h.gch.
fe413112 2626dnl
ff66d28f
PE		 2627dnl Substs:
2628dnl glibcxx_PCHFLAGS
fe413112 2629dnl
f214923c 2630AC_DEFUN([GLIBCXX_ENABLE_PCH], [
ff66d28f 2631 GLIBCXX_ENABLE(libstdcxx-pch,$1,,[build pre-compiled libstdc++ headers])
ff66d28f
PE		 2632 if test $enable_libstdcxx_pch = yes; then
2633 AC_CACHE_CHECK([for compiler with PCH support],
2634 [glibcxx_cv_prog_CXX_pch],
2635 [ac_save_CXXFLAGS="$CXXFLAGS"
2636 CXXFLAGS="$CXXFLAGS -Werror -Winvalid-pch -Wno-deprecated"
2637 AC_LANG_SAVE
2638 AC_LANG_CPLUSPLUS
2639 echo '#include <math.h>' > conftest.h
2640 if $CXX $CXXFLAGS $CPPFLAGS -x c++-header conftest.h \
b329dd10
BK		 2641 -o conftest.h.gch 1>&5 2>&1 &&
2642 echo '#error "pch failed"' > conftest.h &&
2643 echo '#include "conftest.h"' > conftest.cc &&
ff66d28f
PE		 2644 $CXX -c $CXXFLAGS $CPPFLAGS conftest.cc 1>&5 2>&1 ;
2645 then
b329dd10 2646 glibcxx_cv_prog_CXX_pch=yes
ff66d28f 2647 else
b329dd10 2648 glibcxx_cv_prog_CXX_pch=no
ff66d28f
PE		 2649 fi
2650 rm -f conftest*
2651 CXXFLAGS=$ac_save_CXXFLAGS
2652 AC_LANG_RESTORE
2653 ])
2654 enable_libstdcxx_pch=$glibcxx_cv_prog_CXX_pch
c4c064e7 2655 fi
747d0967 2656
797308b2
BK		 2657 AC_MSG_CHECKING([for enabled PCH])
2658 AC_MSG_RESULT([$enable_libstdcxx_pch])
2659
92eabea2 2660 GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_PCH, test $enable_libstdcxx_pch = yes)
ff66d28f 2661 if test $enable_libstdcxx_pch = yes; then
c2ba9709 2662 glibcxx_PCHFLAGS="-include bits/stdc++.h"
c4c064e7 2663 else
ff66d28f 2664 glibcxx_PCHFLAGS=""
bbacb998 2665 fi
ff66d28f 2666 AC_SUBST(glibcxx_PCHFLAGS)
bbacb998
PC		 2667])
2668
7cda84dc 2669
701a3eee
BK		 2670dnl
2671dnl Check for atomic builtins.
2672dnl See:
2673dnl http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html#Atomic-Builtins
2674dnl
2675dnl This checks to see if the host supports the compiler-generated
b329dd10 2676dnl builtins for atomic operations for various integral sizes. Note, this
35648b45
BK		 2677dnl is intended to be an all-or-nothing switch, so all the atomic operations
2678dnl that are used should be checked.
701a3eee
BK		 2679dnl
2680dnl Note:
2cd9cdcc 2681dnl libgomp and libgfortran use a link test, see CHECK_SYNC_FETCH_AND_ADD.
701a3eee
BK		 2682dnl
2683dnl Defines:
b329dd10 2684dnl _GLIBCXX_ATOMIC_BUILTINS_1
50ce8d3d 2685dnl _GLIBCXX_ATOMIC_BUILTINS_2
35648b45 2686dnl _GLIBCXX_ATOMIC_BUILTINS_4
50ce8d3d 2687dnl _GLIBCXX_ATOMIC_BUILTINS_8
701a3eee
BK		 2688dnl
2689AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [
701a3eee
BK		 2690 AC_LANG_SAVE
2691 AC_LANG_CPLUSPLUS
35648b45 2692 old_CXXFLAGS="$CXXFLAGS"
2cd9cdcc
PC		 2693
2694 # Do link tests if possible, instead asm tests, limited to some platforms
2695 # see discussion in PR target/40134, PR libstdc++/40133 and the thread
2696 # starting at http://gcc.gnu.org/ml/gcc-patches/2009-07/msg00322.html
2697 atomic_builtins_link_tests=no
2698 if test x$gcc_no_link != xyes; then
2699 # Can do link tests. Limit to some tested platforms
2700 case "$host" in
2701 *-*-linux* | *-*-uclinux* | *-*-kfreebsd*-gnu | *-*-gnu*)
2702 atomic_builtins_link_tests=yes
b329dd10 2703 ;;
2cd9cdcc
PC		 2704 esac
2705 fi
2706
2707 if test x$atomic_builtins_link_tests = xyes; then
2708
2709 # Do link tests.
2710
2711 CXXFLAGS="$CXXFLAGS -fno-exceptions"
2712
2713 AC_MSG_CHECKING([for atomic builtins for bool])
2714 AC_CACHE_VAL(glibcxx_cv_atomic_bool, [
2715 AC_TRY_LINK(
2716 [ ],
2717 [typedef bool atomic_type;
2718 atomic_type c1;
2719 atomic_type c2;
2720 const atomic_type c3(0);
2721 __sync_fetch_and_add(&c1, c2);
2722 __sync_val_compare_and_swap(&c1, c3, c2);
2723 __sync_lock_test_and_set(&c1, c3);
2724 __sync_lock_release(&c1);
2725 __sync_synchronize();],
2726 [glibcxx_cv_atomic_bool=yes],
2727 [glibcxx_cv_atomic_bool=no])
b329dd10 2728 ])
2cd9cdcc
PC		 2729 if test $glibcxx_cv_atomic_bool = yes; then
2730 AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_1, 1,
2731 [Define if builtin atomic operations for bool are supported on this host.])
2732 fi
2733 AC_MSG_RESULT($glibcxx_cv_atomic_bool)
2734
2735 AC_MSG_CHECKING([for atomic builtins for short])
2736 AC_CACHE_VAL(glibcxx_cv_atomic_short, [
2737 AC_TRY_LINK(
2738 [ ],
2739 [typedef short atomic_type;
2740 atomic_type c1;
2741 atomic_type c2;
2742 const atomic_type c3(0);
2743 __sync_fetch_and_add(&c1, c2);
2744 __sync_val_compare_and_swap(&c1, c3, c2);
2745 __sync_lock_test_and_set(&c1, c3);
2746 __sync_lock_release(&c1);
2747 __sync_synchronize();],
2748 [glibcxx_cv_atomic_short=yes],
2749 [glibcxx_cv_atomic_short=no])
b329dd10 2750 ])
2cd9cdcc
PC		 2751 if test $glibcxx_cv_atomic_short = yes; then
2752 AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_2, 1,
2753 [Define if builtin atomic operations for short are supported on this host.])
2754 fi
2755 AC_MSG_RESULT($glibcxx_cv_atomic_short)
2756
2757 AC_MSG_CHECKING([for atomic builtins for int])
2758 AC_CACHE_VAL(glibcxx_cv_atomic_int, [
2759 AC_TRY_LINK(
2760 [ ],
2761 [typedef int atomic_type;
2762 atomic_type c1;
2763 atomic_type c2;
2764 const atomic_type c3(0);
2765 __sync_fetch_and_add(&c1, c2);
2766 __sync_val_compare_and_swap(&c1, c3, c2);
2767 __sync_lock_test_and_set(&c1, c3);
2768 __sync_lock_release(&c1);
2769 __sync_synchronize();],
2770 [glibcxx_cv_atomic_int=yes],
2771 [glibcxx_cv_atomic_int=no])
b329dd10 2772 ])
2cd9cdcc
PC		 2773 if test $glibcxx_cv_atomic_int = yes; then
2774 AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_4, 1,
2775 [Define if builtin atomic operations for int are supported on this host.])
2776 fi
2777 AC_MSG_RESULT($glibcxx_cv_atomic_int)
2778
2779 AC_MSG_CHECKING([for atomic builtins for long long])
2780 AC_CACHE_VAL(glibcxx_cv_atomic_long_long, [
2781 AC_TRY_LINK(
2782 [ ],
2783 [typedef long long atomic_type;
2784 atomic_type c1;
2785 atomic_type c2;
2786 const atomic_type c3(0);
2787 __sync_fetch_and_add(&c1, c2);
2788 __sync_val_compare_and_swap(&c1, c3, c2);
2789 __sync_lock_test_and_set(&c1, c3);
2790 __sync_lock_release(&c1);
2791 __sync_synchronize();],
2792 [glibcxx_cv_atomic_long_long=yes],
2793 [glibcxx_cv_atomic_long_long=no])
b329dd10 2794 ])
2cd9cdcc
PC		 2795 if test $glibcxx_cv_atomic_long_long = yes; then
2796 AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_8, 1,
2797 [Define if builtin atomic operations for long long are supported on this host.])
2798 fi
2799 AC_MSG_RESULT($glibcxx_cv_atomic_long_long)
2800
2801 else
2802
2803 # Do asm tests.
2804
35648b45
BK		 2805 # Compile unoptimized.
2806 CXXFLAGS='-O0 -S'
2807
2cd9cdcc 2808 # Fake what AC_TRY_COMPILE does.
701a3eee 2809
701a3eee
BK		 2810 cat > conftest.$ac_ext << EOF
2811[#]line __oline__ "configure"
2812int main()
50ce8d3d
BK		 2813{
2814 typedef bool atomic_type;
2815 atomic_type c1;
2816 atomic_type c2;
2817 const atomic_type c3(0);
2818 __sync_fetch_and_add(&c1, c2);
2819 __sync_val_compare_and_swap(&c1, c3, c2);
2820 __sync_lock_test_and_set(&c1, c3);
2821 __sync_lock_release(&c1);
2822 __sync_synchronize();
2823 return 0;
2824}
2825EOF
2826
2827 AC_MSG_CHECKING([for atomic builtins for bool])
2828 if AC_TRY_EVAL(ac_compile); then
2829 if grep __sync_ conftest.s >/dev/null 2>&1 ; then
b329dd10 2830 glibcxx_cv_atomic_bool=no
50ce8d3d
BK		 2831 else
2832 AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_1, 1,
2833 [Define if builtin atomic operations for bool are supported on this host.])
b329dd10 2834 glibcxx_cv_atomic_bool=yes
50ce8d3d
BK		 2835 fi
2836 fi
2cd9cdcc 2837 AC_MSG_RESULT($glibcxx_cv_atomic_bool)
50ce8d3d
BK		 2838 rm -f conftest*
2839
2840 cat > conftest.$ac_ext << EOF
2841[#]line __oline__ "configure"
2842int main()
2843{
2844 typedef short atomic_type;
2845 atomic_type c1;
2846 atomic_type c2;
2847 const atomic_type c3(0);
2848 __sync_fetch_and_add(&c1, c2);
2849 __sync_val_compare_and_swap(&c1, c3, c2);
2850 __sync_lock_test_and_set(&c1, c3);
2851 __sync_lock_release(&c1);
2852 __sync_synchronize();
2853 return 0;
2854}
2855EOF
2856
2857 AC_MSG_CHECKING([for atomic builtins for short])
2858 if AC_TRY_EVAL(ac_compile); then
2859 if grep __sync_ conftest.s >/dev/null 2>&1 ; then
b329dd10 2860 glibcxx_cv_atomic_short=no
50ce8d3d
BK		 2861 else
2862 AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_2, 1,
2863 [Define if builtin atomic operations for short are supported on this host.])
b329dd10 2864 glibcxx_cv_atomic_short=yes
50ce8d3d
BK		 2865 fi
2866 fi
2cd9cdcc 2867 AC_MSG_RESULT($glibcxx_cv_atomic_short)
50ce8d3d
BK		 2868 rm -f conftest*
2869
2870 cat > conftest.$ac_ext << EOF
2871[#]line __oline__ "configure"
2872int main()
701a3eee 2873{
b329dd10 2874 // NB: _Atomic_word not necessarily int.
701a3eee
BK		 2875 typedef int atomic_type;
2876 atomic_type c1;
2877 atomic_type c2;
2878 const atomic_type c3(0);
35648b45
BK		 2879 __sync_fetch_and_add(&c1, c2);
2880 __sync_val_compare_and_swap(&c1, c3, c2);
2881 __sync_lock_test_and_set(&c1, c3);
2882 __sync_lock_release(&c1);
2883 __sync_synchronize();
2884 return 0;
2885}
2886EOF
2887
2888 AC_MSG_CHECKING([for atomic builtins for int])
2889 if AC_TRY_EVAL(ac_compile); then
2890 if grep __sync_ conftest.s >/dev/null 2>&1 ; then
b329dd10 2891 glibcxx_cv_atomic_int=no
35648b45
BK		 2892 else
2893 AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_4, 1,
b329dd10
BK		 2894 [Define if builtin atomic operations for int are supported on this host.])
2895 glibcxx_cv_atomic_int=yes
35648b45
BK		 2896 fi
2897 fi
2cd9cdcc 2898 AC_MSG_RESULT($glibcxx_cv_atomic_int)
35648b45
BK		 2899 rm -f conftest*
2900
2901 cat > conftest.$ac_ext << EOF
2902[#]line __oline__ "configure"
2903int main()
2904{
50ce8d3d 2905 typedef long long atomic_type;
35648b45
BK		 2906 atomic_type c1;
2907 atomic_type c2;
2908 const atomic_type c3(0);
2909 __sync_fetch_and_add(&c1, c2);
2910 __sync_val_compare_and_swap(&c1, c3, c2);
2911 __sync_lock_test_and_set(&c1, c3);
2912 __sync_lock_release(&c1);
2913 __sync_synchronize();
2914 return 0;
701a3eee
BK		 2915}
2916EOF
35648b45 2917
50ce8d3d 2918 AC_MSG_CHECKING([for atomic builtins for long long])
701a3eee 2919 if AC_TRY_EVAL(ac_compile); then
35648b45 2920 if grep __sync_ conftest.s >/dev/null 2>&1 ; then
b329dd10 2921 glibcxx_cv_atomic_long_long=no
701a3eee 2922 else
50ce8d3d
BK		 2923 AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_8, 1,
2924 [Define if builtin atomic operations for long long are supported on this host.])
b329dd10 2925 glibcxx_cv_atomic_long_long=yes
701a3eee
BK		 2926 fi
2927 fi
2cd9cdcc 2928 AC_MSG_RESULT($glibcxx_cv_atomic_long_long)
701a3eee
BK		 2929 rm -f conftest*
2930
2cd9cdcc 2931 fi
50ce8d3d 2932
35648b45
BK		 2933 CXXFLAGS="$old_CXXFLAGS"
2934 AC_LANG_RESTORE
2935
2936 # Set atomicity_dir to builtins if either of above tests pass.
2cd9cdcc 2937 if test $glibcxx_cv_atomic_int = yes || test $glibcxx_cv_atomic_bool = yes ; then
35648b45
BK		 2938 atomicity_dir=cpu/generic/atomicity_builtins
2939 fi
2940
2941 # If still generic, set to mutex.
701a3eee 2942 if test $atomicity_dir = "cpu/generic" ; then
35648b45 2943 atomicity_dir=cpu/generic/atomicity_mutex
6995087d 2944 AC_MSG_WARN([No native atomic operations are provided for this platform.])
dd88bc97 2945 if test "x$target_thread_file" = xsingle; then
b329dd10
BK		 2946 AC_MSG_WARN([They cannot be faked when thread support is disabled.])
2947 AC_MSG_WARN([Thread-safety of certain classes is not guaranteed.])
6995087d 2948 else
b329dd10
BK		 2949 AC_MSG_WARN([They will be faked using a mutex.])
2950 AC_MSG_WARN([Performance of certain classes will degrade as a result.])
6995087d 2951 fi
701a3eee 2952 fi
35648b45 2953
701a3eee
BK		 2954])
2955
2956
bda243ec 2957dnl
ff66d28f
PE		 2958dnl Check for exception handling support. If an explicit enable/disable
2959dnl sjlj exceptions is given, we don't have to detect. Otherwise the
2960dnl target may or may not support call frame exceptions.
bda243ec 2961dnl
ff66d28f
PE		 2962dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
2963dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1260d70f 2964dnl Neither one forces an attempt at detection.
4d16bdbb 2965dnl
ff66d28f
PE		 2966dnl Defines:
2967dnl _GLIBCXX_SJLJ_EXCEPTIONS if the compiler is configured for it
4d16bdbb 2968dnl
f214923c 2969AC_DEFUN([GLIBCXX_ENABLE_SJLJ_EXCEPTIONS], [
ff66d28f
PE		 2970 AC_MSG_CHECKING([for exception model to use])
2971 AC_LANG_SAVE
2972 AC_LANG_CPLUSPLUS
1260d70f 2973 GLIBCXX_ENABLE(sjlj-exceptions,auto,,
ff66d28f 2974 [force use of builtin_setjmp for exceptions],
1260d70f
PE		 2975 [permit yes|no|auto])
2976
2977 if test $enable_sjlj_exceptions = auto; then
2978 # Botheration. Now we've got to detect the exception model. Link tests
2979 # against libgcc.a are problematic since we've not been given proper -L
2980 # bits for single-tree newlib and libgloss.
2981 #
2982 # Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style.
2983 cat > conftest.$ac_ext << EOF
ff66d28f
PE		 2984[#]line __oline__ "configure"
2985struct S { ~S(); };
2986void bar();
2987void foo()
2988{
2989 S s;
2990 bar();
2991}
2992EOF
1260d70f
PE		 2993 old_CXXFLAGS="$CXXFLAGS"
2994 CXXFLAGS=-S
2995 if AC_TRY_EVAL(ac_compile); then
2996 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
b329dd10 2997 enable_sjlj_exceptions=yes
1260d70f 2998 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
b329dd10 2999 enable_sjlj_exceptions=no
617a1b71 3000 elif grep __cxa_end_cleanup conftest.s >/dev/null 2>&1 ; then
b329dd10 3001 enable_sjlj_exceptions=no
1260d70f
PE		 3002 fi
3003 fi
3004 CXXFLAGS="$old_CXXFLAGS"
3005 rm -f conftest*
3006 fi
3007
cddfb1c7
BK		 3008 # This is a tad weird, for hysterical raisins. We have to map
3009 # enable/disable to two different models.
1260d70f
PE		 3010 case $enable_sjlj_exceptions in
3011 yes)
3012 AC_DEFINE(_GLIBCXX_SJLJ_EXCEPTIONS, 1,
b329dd10 3013 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1260d70f
PE		 3014 ac_exception_model_name=sjlj
3015 ;;
3016 no)
3017 ac_exception_model_name="call frame"
3018 ;;
3019 *)
3020 AC_MSG_ERROR([unable to detect exception model])
3021 ;;
3022 esac
ff66d28f
PE		 3023 AC_LANG_RESTORE
3024 AC_MSG_RESULT($ac_exception_model_name)
4d16bdbb
PE		 3025])
3026
3027
98e615b4
BK		 3028dnl
3029dnl Allow visibility attributes to be used on namespaces, objects, etc.
3030dnl
3031dnl --enable-visibility enables attempt to use visibility attributes.
3032dnl --disable-visibility turns off all use of visibility attributes.
3033dnl + Usage: GLIBCXX_ENABLE_VISIBILITY[(DEFAULT)]
3034dnl Where DEFAULT is 'yes'.
3035dnl
3036AC_DEFUN([GLIBCXX_ENABLE_VISIBILITY], [
3037GLIBCXX_ENABLE(visibility,$1,,[enables visibility safe usage])
3038
3039if test x$enable_visibility = xyes ; then
3040 dnl all hail libgfortran
3041 dnl Check whether the target supports hidden visibility.
3042 AC_CACHE_CHECK([whether the target supports hidden visibility],
6d26724a 3043 glibcxx_cv_have_attribute_visibility, [
98e615b4
BK		 3044 save_CFLAGS="$CFLAGS"
3045 CFLAGS="$CFLAGS -Werror"
3046 AC_TRY_COMPILE([void __attribute__((visibility("hidden"))) foo(void) { }],
6d26724a
RW		 3047 [], glibcxx_cv_have_attribute_visibility=yes,
3048 glibcxx_cv_have_attribute_visibility=no)
98e615b4 3049 CFLAGS="$save_CFLAGS"])
6d26724a 3050 if test $glibcxx_cv_have_attribute_visibility = no; then
98e615b4
BK		 3051 enable_visibility=no
3052 fi
3053fi
3054
3055GLIBCXX_CONDITIONAL(ENABLE_VISIBILITY, test $enable_visibility = yes)
3056AC_MSG_NOTICE([visibility supported: $enable_visibility])
3057])
3058
3059
530539d9
PE		 3060dnl
3061dnl Add version tags to symbols in shared library (or not), additionally
3062dnl marking other symbols as private/local (or not).
3063dnl
2799d972
BK		 3064dnl Sets libtool_VERSION, and determines shared library SONAME.
3065dnl
3066dnl This depends on GLIBCXX CHECK_LINKER_FEATURES, but without it assumes no.
3067dnl
c98b201b
PE		 3068dnl --enable-symvers=style adds a version script to the linker call when
3069dnl creating the shared library. The choice of version script is
3070dnl controlled by 'style'.
530539d9 3071dnl --disable-symvers does not.
2799d972 3072dnl
3d7c150e 3073dnl + Usage: GLIBCXX_ENABLE_SYMVERS[(DEFAULT)]
ff66d28f
PE		 3074dnl Where DEFAULT is either 'yes' or 'no'. Passing `yes' tries to
3075dnl choose a default style based on linker characteristics. Passing
3076dnl 'no' disables versioning.
3077dnl
f214923c 3078AC_DEFUN([GLIBCXX_ENABLE_SYMVERS], [
ff66d28f 3079
b453ace3 3080GLIBCXX_ENABLE(symvers,$1,[[[=STYLE]]],
ff66d28f 3081 [enables symbol versioning of the shared library],
c18dc5cc 3082 [permit yes|no|gnu|gnu-versioned-namespace|darwin|darwin-export|sun])
c98b201b 3083
3d7c150e 3084# If we never went through the GLIBCXX_CHECK_LINKER_FEATURES macro, then we
37bc6ca2 3085# don't know enough about $LD to do tricks...
ff66d28f 3086AC_REQUIRE([GLIBCXX_CHECK_LINKER_FEATURES])
c18dc5cc
RO		 3087# Sun style symbol versions needs GNU c++filt for make_sunver.pl to work
3088# with extern "C++" in version scripts.
3089AC_REQUIRE([GCC_PROG_GNU_CXXFILT])
a9fdd472
GK		 3090
3091# Turn a 'yes' into a suitable default.
3092if test x$enable_symvers = xyes ; then
4bd726d0 3093 if test $enable_shared = no || test "x$LD" = x || test x$gcc_no_link = xyes; then
a9fdd472 3094 enable_symvers=no
a9fdd472 3095 else
fb5c309d 3096 if test $with_gnu_ld = yes ; then
d89f0ad6 3097 case ${target_os} in
b329dd10
BK		 3098 hpux*)
3099 enable_symvers=no ;;
3100 *)
3101 enable_symvers=gnu ;;
d89f0ad6 3102 esac
fb5c309d
BK		 3103 else
3104 case ${target_os} in
b329dd10 3105 darwin*)
fb5c309d 3106 enable_symvers=darwin ;;
c18dc5cc
RO		 3107 # Sun symbol versioning exists since Solaris 2.5.
3108 solaris2.[[5-9]]* | solaris2.1[[0-9]]*)
3109 # make_sunver.pl needs GNU c++filt to support extern "C++" in
3110 # version scripts, so disable symbol versioning if none can be
3111 # found.
3112 if test -z "$ac_cv_path_CXXFILT"; then
3113 AC_MSG_WARN([=== You have requested Sun symbol versioning, but])
3114 AC_MSG_WARN([=== no GNU c++filt could be found.])
3115 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3116 enable_symvers=no
3117 else
3118 enable_symvers=sun
3119 fi
3120 ;;
b329dd10
BK		 3121 *)
3122 enable_symvers=no ;;
fb5c309d
BK		 3123 esac
3124 fi
a9fdd472 3125 fi
530539d9 3126fi
c98b201b 3127
fb5c309d
BK		 3128# Check to see if 'darwin' or 'darwin-export' can win.
3129if test x$enable_symvers = xdarwin-export ; then
3130 enable_symvers=darwin
3131fi
3132
c18dc5cc
RO		 3133# Check if 'sun' was requested on non-Solaris 2 platforms.
3134if test x$enable_symvers = xsun ; then
3135 case ${target_os} in
3136 solaris2*)
3137 # All fine.
3138 ;;
3139 *)
3140 # Unlikely to work.
3141 AC_MSG_WARN([=== You have requested Sun symbol versioning, but])
3142 AC_MSG_WARN([=== you are not targetting Solaris 2.])
3143 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3144 enable_symvers=no
3145 ;;
3146 esac
3147fi
3148
f47bddec 3149# Check to see if 'gnu' can win.
b329dd10
BK		 3150if test $enable_symvers = gnu ||
3151 test $enable_symvers = gnu-versioned-namespace ||
c18dc5cc 3152 test $enable_symvers = sun; then
f47bddec 3153 # Check to see if libgcc_s exists, indicating that shared libgcc is possible.
2c839a4e
PE		 3154 AC_MSG_CHECKING([for shared libgcc])
3155 ac_save_CFLAGS="$CFLAGS"
3156 CFLAGS=' -lgcc_s'
ff66d28f 3157 AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes, glibcxx_shared_libgcc=no)
2c839a4e 3158 CFLAGS="$ac_save_CFLAGS"
d5325238
JJ		 3159 if test $glibcxx_shared_libgcc = no; then
3160 cat > conftest.c <<EOF
3161int main (void) { return 0; }
3162EOF
3163changequote(,)dnl
3164 glibcxx_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
3165 -shared -shared-libgcc -o conftest.so \
3166 conftest.c -v 2>&1 >/dev/null \
3167 | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'`
3168changequote([,])dnl
3169 rm -f conftest.c conftest.so
3170 if test x${glibcxx_libgcc_s_suffix+set} = xset; then
3171 CFLAGS=" -lgcc_s$glibcxx_libgcc_s_suffix"
3172 AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes)
3173 CFLAGS="$ac_save_CFLAGS"
3174 fi
3175 fi
3d7c150e 3176 AC_MSG_RESULT($glibcxx_shared_libgcc)
a9fdd472 3177
a9fdd472
GK		 3178 # For GNU ld, we need at least this version. The format is described in
3179 # GLIBCXX_CHECK_LINKER_FEATURES above.
3180 glibcxx_min_gnu_ld_version=21400
c98b201b 3181
f47bddec
GK		 3182 # If no shared libgcc, can't win.
3183 if test $glibcxx_shared_libgcc != yes; then
3184 AC_MSG_WARN([=== You have requested GNU symbol versioning, but])
3185 AC_MSG_WARN([=== you are not building a shared libgcc_s.])
3186 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3187 enable_symvers=no
c18dc5cc
RO		 3188 elif test $with_gnu_ld != yes && test $enable_symvers = sun; then
3189 : All interesting versions of Sun ld support sun style symbol versioning.
f47bddec 3190 elif test $with_gnu_ld != yes ; then
ab3bc736 3191 # just fail for now
a9fdd472
GK		 3192 AC_MSG_WARN([=== You have requested GNU symbol versioning, but])
3193 AC_MSG_WARN([=== you are not using the GNU linker.])
3194 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3195 enable_symvers=no
d60a2d4d
ILT		 3196 elif test $glibcxx_ld_is_gold = yes ; then
3197 : All versions of gold support symbol versioning.
a9fdd472
GK		 3198 elif test $glibcxx_gnu_ld_version -lt $glibcxx_min_gnu_ld_version ; then
3199 # The right tools, the right setup, but too old. Fallbacks?
3200 AC_MSG_WARN(=== Linker version $glibcxx_gnu_ld_version is too old for)
3201 AC_MSG_WARN(=== full symbol versioning support in this release of GCC.)
3202 AC_MSG_WARN(=== You would need to upgrade your binutils to version)
3203 AC_MSG_WARN(=== $glibcxx_min_gnu_ld_version or later and rebuild GCC.)
58579a27 3204 AC_MSG_WARN([=== Symbol versioning will be disabled.])
ab3bc736
BK		 3205 enable_symvers=no
3206 fi
3207fi
3208
2799d972
BK		 3209# For libtool versioning info, format is CURRENT:REVISION:AGE
3210libtool_VERSION=6:17:0
3211
3212# Everything parsed; figure out what files and settings to use.
c98b201b 3213case $enable_symvers in
ab3bc736 3214 no)
fb5c309d 3215 SYMVER_FILE=config/abi/pre/none.ver
ff66d28f 3216 ;;
c98b201b 3217 gnu)
fb5c309d 3218 SYMVER_FILE=config/abi/pre/gnu.ver
b329dd10
BK		 3219 AC_DEFINE(_GLIBCXX_SYMVER_GNU, 1,
3220 [Define to use GNU versioning in the shared library.])
a9fdd472 3221 ;;
3cbc7af0 3222 gnu-versioned-namespace)
2799d972 3223 libtool_VERSION=7:0:0
3cbc7af0 3224 SYMVER_FILE=config/abi/pre/gnu-versioned-namespace.ver
b329dd10
BK		 3225 AC_DEFINE(_GLIBCXX_SYMVER_GNU_NAMESPACE, 1,
3226 [Define to use GNU namespace versioning in the shared library.])
3cbc7af0 3227 ;;
fb5c309d
BK		 3228 darwin)
3229 SYMVER_FILE=config/abi/pre/gnu.ver
b329dd10
BK		 3230 AC_DEFINE(_GLIBCXX_SYMVER_DARWIN, 1,
3231 [Define to use darwin versioning in the shared library.])
ff66d28f 3232 ;;
c18dc5cc
RO		 3233 sun)
3234 SYMVER_FILE=config/abi/pre/gnu.ver
b329dd10
BK		 3235 AC_DEFINE(_GLIBCXX_SYMVER_SUN, 1,
3236 [Define to use Sun versioning in the shared library.])
c18dc5cc 3237 ;;
c98b201b
PE		 3238esac
3239
fb5c309d
BK		 3240if test x$enable_symvers != xno ; then
3241 AC_DEFINE(_GLIBCXX_SYMVER, 1,
3242 [Define to use symbol versioning in the shared library.])
3243fi
3244
1f93f687
JJ		 3245AC_CACHE_CHECK([whether the target supports .symver directive],
3246 glibcxx_cv_have_as_symver_directive, [
3247 AC_TRY_COMPILE([void foo (void); __asm (".symver foo, bar@SYMVER");],
3248 [], glibcxx_cv_have_as_symver_directive=yes,
3249 glibcxx_cv_have_as_symver_directive=no)])
3250if test $glibcxx_cv_have_as_symver_directive = yes; then
3251 AC_DEFINE(HAVE_AS_SYMVER_DIRECTIVE, 1,
3252 [Define to 1 if the target assembler supports .symver directive.])
3253fi
3254
fb5c309d
BK		 3255AC_SUBST(SYMVER_FILE)
3256AC_SUBST(port_specific_symbol_files)
3257GLIBCXX_CONDITIONAL(ENABLE_SYMVERS, test $enable_symvers != no)
3258GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_GNU, test $enable_symvers = gnu)
3cbc7af0 3259GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_GNU_NAMESPACE, test $enable_symvers = gnu-versioned-namespace)
fb5c309d 3260GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_DARWIN, test $enable_symvers = darwin)
c18dc5cc 3261GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_SUN, test $enable_symvers = sun)
fb5c309d
BK		 3262AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers)
3263
c18dc5cc
RO		 3264if test $enable_symvers != no ; then
3265 case ${target_os} in
3266 # The Solaris 2 runtime linker doesn't support the GNU extension of
3267 # binding the same symbol to different versions
3268 solaris2*)
3269 symvers_renaming=no ;;
3270 # Other platforms with GNU symbol versioning (GNU/Linux, more?) do.
3271 *)
8198d541 3272 AC_DEFINE(HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT, 1,
b329dd10 3273 [Define to 1 if the target runtime linker supports binding the same symbol to different versions.])
8198d541 3274 symvers_renaming=yes ;;
c18dc5cc 3275 esac
c0f9d583
RO		 3276else
3277 symvers_renaming=no
c18dc5cc
RO		 3278fi
3279GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_SOL2, test $symvers_renaming = no)
3280
fb5c309d 3281# Now, set up compatibility support, if any.
bb2b2a24
BK		 3282# In addition, need this to deal with std::size_t mangling in
3283# src/compatibility.cc. In a perfect world, could use
3284# typeid(std::size_t).name()[0] to do direct substitution.
3285AC_MSG_CHECKING([for size_t as unsigned int])
3286ac_save_CFLAGS="$CFLAGS"
3287CFLAGS="-Werror"
b329dd10
BK		 3288AC_TRY_COMPILE(, [__SIZE_TYPE__* stp; unsigned int* uip; stp = uip;],
3289 [glibcxx_size_t_is_i=yes], [glibcxx_size_t_is_i=no])
bb2b2a24
BK		 3290CFLAGS=$ac_save_CFLAGS
3291if test "$glibcxx_size_t_is_i" = yes; then
3292 AC_DEFINE(_GLIBCXX_SIZE_T_IS_UINT, 1, [Define if size_t is unsigned int.])
3293fi
3294AC_MSG_RESULT([$glibcxx_size_t_is_i])
3295
3296AC_MSG_CHECKING([for ptrdiff_t as int])
3297ac_save_CFLAGS="$CFLAGS"
3298CFLAGS="-Werror"
b329dd10
BK		 3299AC_TRY_COMPILE(, [__PTRDIFF_TYPE__* ptp; int* ip; ptp = ip;],
3300 [glibcxx_ptrdiff_t_is_i=yes], [glibcxx_ptrdiff_t_is_i=no])
bb2b2a24
BK		 3301CFLAGS=$ac_save_CFLAGS
3302if test "$glibcxx_ptrdiff_t_is_i" = yes; then
3303 AC_DEFINE(_GLIBCXX_PTRDIFF_T_IS_INT, 1, [Define if ptrdiff_t is int.])
3304fi
3305AC_MSG_RESULT([$glibcxx_ptrdiff_t_is_i])
ff66d28f
PE		 3306])
3307
3308
3309dnl
3310dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
3311dnl We must stage the required headers so that they will be installed
3312dnl with the library (unlike libgcc, the STL implementation is provided
3313dnl solely within headers). Since we must not inject random user-space
3314dnl macro names into user-provided C++ code, we first stage into <file>-in
3315dnl and process to <file> with an output command. The reason for a two-
3316dnl stage process here is to correctly handle $srcdir!=$objdir without
3317dnl having to write complex code (the sed commands to clean the macro
3318dnl namespace are complex and fragile enough as it is). We must also
3319dnl add a relative path so that -I- is supported properly.
3320dnl
f214923c 3321AC_DEFUN([GLIBCXX_ENABLE_THREADS], [
ff66d28f 3322 AC_MSG_CHECKING([for thread model used by GCC])
fbe057bb 3323 target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
ff66d28f 3324 AC_MSG_RESULT([$target_thread_file])
ff66d28f
PE		 3325])
3326
3327
b8c41c8e
CF		 3328dnl
3329dnl Check if gthread implementation defines the types and functions
3330dnl required by the c++0x thread library. Conforming gthread
3331dnl implementations can define __GTHREADS_CXX0X to enable use with c++0x.
3332dnl
3333AC_DEFUN([GLIBCXX_CHECK_GTHREADS], [
3334 AC_LANG_SAVE
3335 AC_LANG_CPLUSPLUS
3336
3337 ac_save_CXXFLAGS="$CXXFLAGS"
5d1c8e77
RO		 3338 CXXFLAGS="$CXXFLAGS -fno-exceptions \
3339 -I${toplevel_srcdir}/libgcc -I${toplevel_builddir}/libgcc"
b8c41c8e 3340
3b2eeb43
JW		 3341 target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
3342 case $target_thread_file in
3343 posix)
3344 CXXFLAGS="$CXXFLAGS -DSUPPORTS_WEAK -DGTHREAD_USE_WEAK -D_PTHREADS"
3345 esac
3346
3347 AC_MSG_CHECKING([whether it can be safely assumed that mutex_timedlock is available])
6545e33e
PC		 3348
3349 AC_TRY_COMPILE([#include <unistd.h>],
3350 [
3b2eeb43
JW		 3351 // In case of POSIX threads check _POSIX_TIMEOUTS.
3352 #if (defined(_PTHREADS) \
3353 && (!defined(_POSIX_TIMEOUTS) || _POSIX_TIMEOUTS <= 0))
6545e33e
PC		 3354 #error
3355 #endif
3356 ], [ac_gthread_use_mutex_timedlock=1], [ac_gthread_use_mutex_timedlock=0])
3357
3358 AC_DEFINE_UNQUOTED(_GTHREAD_USE_MUTEX_TIMEDLOCK, $ac_gthread_use_mutex_timedlock,
3359 [Define to 1 if mutex_timedlock is available.])
3360
3361 if test $ac_gthread_use_mutex_timedlock = 1 ; then res_mutex_timedlock=yes ;
3362 else res_mutex_timedlock=no ; fi
3363 AC_MSG_RESULT([$res_mutex_timedlock])
3364
b8c41c8e
CF		 3365 AC_MSG_CHECKING([for gthreads library])
3366
3b2eeb43 3367 AC_TRY_COMPILE([#include "gthr.h"],
b8c41c8e 3368 [
a1c5742d
PC		 3369 #ifndef __GTHREADS_CXX0X
3370 #error
3371 #endif
b8c41c8e
CF		 3372 ], [ac_has_gthreads=yes], [ac_has_gthreads=no])
3373
3374 AC_MSG_RESULT([$ac_has_gthreads])
3375
3376 if test x"$ac_has_gthreads" = x"yes"; then
3377 AC_DEFINE(_GLIBCXX_HAS_GTHREADS, 1,
b329dd10 3378 [Define if gthreads library is available.])
b8c41c8e
CF		 3379 fi
3380
3381 CXXFLAGS="$ac_save_CXXFLAGS"
3382 AC_LANG_RESTORE
3383])
3384
3385
ff66d28f
PE		 3386# Check whether LC_MESSAGES is available in <locale.h>.
3387# Ulrich Drepper <drepper@cygnus.com>, 1995.
3388#
3389# This file file be copied and used freely without restrictions. It can
3390# be used in projects which are not available under the GNU Public License
3391# but which still want to provide support for the GNU gettext functionality.
3392# Please note that the actual code is *not* freely available.
f214923c 3393AC_DEFUN([AC_LC_MESSAGES], [
ff66d28f
PE		 3394 AC_CHECK_HEADER(locale.h, [
3395 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
99bf8d16 3396 [AC_TRY_COMPILE([#include <locale.h>], [return LC_MESSAGES],
ff66d28f
PE		 3397 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
3398 if test $ac_cv_val_LC_MESSAGES = yes; then
b329dd10
BK		 3399 AC_DEFINE(HAVE_LC_MESSAGES, 1,
3400 [Define if LC_MESSAGES is available in <locale.h>.])
ff66d28f
PE		 3401 fi
3402 ])
3403])
3404
43653c33
JW		 3405dnl
3406dnl Check whether get_nprocs is available in <sys/sysinfo.h>, and define _GLIBCXX_USE_GET_NPROCS.
3407dnl
3408AC_DEFUN([GLIBCXX_CHECK_GET_NPROCS], [
3409
3410 AC_LANG_SAVE
3411 AC_LANG_CPLUSPLUS
3412 ac_save_CXXFLAGS="$CXXFLAGS"
3413 CXXFLAGS="$CXXFLAGS -fno-exceptions"
3414
3415 AC_MSG_CHECKING([for get_nprocs])
3416 AC_CACHE_VAL(glibcxx_cv_GET_NPROCS, [
3417 GCC_TRY_COMPILE_OR_LINK(
3418 [#include <sys/sysinfo.h>],
3419 [int n = get_nprocs();],
3420 [glibcxx_cv_GET_NPROCS=yes],
3421 [glibcxx_cv_GET_NPROCS=no])
3422 ])
3423 if test $glibcxx_cv_GET_NPROCS = yes; then
3424 AC_DEFINE(_GLIBCXX_USE_GET_NPROCS, 1, [Define if get_nprocs is available in <sys/sysinfo.h>.])
3425 fi
3426 AC_MSG_RESULT($glibcxx_cv_GET_NPROCS)
3427
3428 CXXFLAGS="$ac_save_CXXFLAGS"
3429 AC_LANG_RESTORE
3430])
3431
3432dnl
3433dnl Check whether sysconf(_SC_NPROCESSORS_ONLN) is available in <unistd.h>, and define _GLIBCXX_USE_SC_NPROCESSORS_ONLN.
3434dnl
3435AC_DEFUN([GLIBCXX_CHECK_SC_NPROCESSORS_ONLN], [
3436
3437 AC_LANG_SAVE
3438 AC_LANG_CPLUSPLUS
3439 ac_save_CXXFLAGS="$CXXFLAGS"
3440 CXXFLAGS="$CXXFLAGS -fno-exceptions"
3441
3442 AC_MSG_CHECKING([for _SC_NPROCESSORS_ONLN])
3443 AC_CACHE_VAL(glibcxx_cv_SC_NPROCESSORS_ONLN, [
3444 GCC_TRY_COMPILE_OR_LINK(
3445 [#include <unistd.h>],
3446 [int n = sysconf(_SC_NPROCESSORS_ONLN);],
3447 [glibcxx_cv_SC_NPROCESSORS_ONLN=yes],
3448 [glibcxx_cv_SC_NPROCESSORS_ONLN=no])
3449 ])
3450 if test $glibcxx_cv_SC_NPROCESSORS_ONLN = yes; then
3451 AC_DEFINE(_GLIBCXX_USE_SC_NPROCESSORS_ONLN, 1, [Define if _SC_NPROCESSORS_ONLN is available in <unistd.h>.])
3452 fi
3453 AC_MSG_RESULT($glibcxx_cv_SC_NPROCESSORS_ONLN)
3454
3455 CXXFLAGS="$ac_save_CXXFLAGS"
3456 AC_LANG_RESTORE
3457])
3458
3459
cddfb1c7 3460# Macros from the top-level gcc directory.
c18dc5cc 3461m4_include([../config/gc++filt.m4])
cddfb1c7 3462m4_include([../config/tls.m4])
Mirror of https://gcc.gnu.org/git/gcc.git