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ff66d28f | 1 | |
92eabea2 PE |
2 | dnl |
3 | dnl GLIBCXX_CONDITIONAL (NAME, SHELL-TEST) | |
4 | dnl | |
5 | dnl Exactly like AM_CONDITIONAL, but delays evaluation of the test until the | |
6 | dnl end of configure. This lets tested variables be reassigned, and the | |
7 | dnl conditional will depend on the final state of the variable. For a simple | |
8 | dnl example of why this is needed, see GLIBCXX_ENABLE_HOSTED. | |
9 | dnl | |
10 | m4_define([_m4_divert(glibcxx_diversion)], 8000)dnl | |
f214923c | 11 | AC_DEFUN([GLIBCXX_CONDITIONAL], [dnl |
92eabea2 PE |
12 | m4_divert_text([glibcxx_diversion],dnl |
13 | AM_CONDITIONAL([$1],[$2]) | |
14 | )dnl | |
15 | ])dnl | |
f214923c | 16 | AC_DEFUN([GLIBCXX_EVALUATE_CONDITIONALS], [m4_undivert([glibcxx_diversion])])dnl |
92eabea2 PE |
17 | |
18 | ||
ff66d28f PE |
19 | dnl |
20 | dnl Check to see what architecture and operating system we are compiling | |
21 | dnl for. Also, if architecture- or OS-specific flags are required for | |
22 | dnl compilation, pick them up here. | |
23 | dnl | |
f214923c | 24 | AC_DEFUN([GLIBCXX_CHECK_HOST], [ |
ff66d28f | 25 | . $glibcxx_srcdir/configure.host |
f214923c BK |
26 | AC_MSG_NOTICE([CPU config directory is $cpu_include_dir]) |
27 | AC_MSG_NOTICE([OS config directory is $os_include_dir]) | |
ff66d28f PE |
28 | ]) |
29 | ||
ff66d28f PE |
30 | dnl |
31 | dnl Initialize the rest of the library configury. At this point we have | |
32 | dnl variables like $host. | |
aebb8c22 | 33 | dnl |
ff66d28f | 34 | dnl Sets: |
82ba99d5 | 35 | dnl SUBDIRS |
ff66d28f PE |
36 | dnl Substs: |
37 | dnl glibcxx_builddir (absolute path) | |
38 | dnl glibcxx_srcdir (absolute path) | |
39 | dnl toplevel_srcdir (absolute path) | |
40 | dnl with_cross_host | |
41 | dnl with_newlib | |
42 | dnl with_target_subdir | |
43 | dnl plus | |
44 | dnl - the variables in GLIBCXX_CHECK_HOST / configure.host | |
45 | dnl - default settings for all AM_CONFITIONAL test variables | |
46 | dnl - lots of tools, like CC and CXX | |
aebb8c22 | 47 | dnl |
f214923c | 48 | AC_DEFUN([GLIBCXX_CONFIGURE], [ |
82ba99d5 PE |
49 | # Keep these sync'd with the list in Makefile.am. The first provides an |
50 | # expandable list at autoconf time; the second provides an expandable list | |
51 | # (i.e., shell variable) at configure time. | |
52 | m4_define([glibcxx_SUBDIRS],[include libmath libsupc++ src po testsuite]) | |
53 | SUBDIRS='glibcxx_SUBDIRS' | |
54 | ||
d2caef2e PE |
55 | # These need to be absolute paths, yet at the same time need to |
56 | # canonicalize only relative paths, because then amd will not unmount | |
57 | # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd. | |
3d7c150e | 58 | glibcxx_builddir=`${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 |
ff66d28f | 63 | toplevel_srcdir=${glibcxx_srcdir}/.. |
3d7c150e BK |
64 | AC_SUBST(glibcxx_builddir) |
65 | AC_SUBST(glibcxx_srcdir) | |
ff66d28f | 66 | AC_SUBST(toplevel_srcdir) |
d2caef2e | 67 | |
ff66d28f PE |
68 | # We use these options to decide which functions to include. They are |
69 | # set from the top level. | |
70 | AC_ARG_WITH([target-subdir], | |
71 | AC_HELP_STRING([--with-target-subdir=SUBDIR], | |
72 | [configuring in a subdirectory])) | |
73 | ||
74 | AC_ARG_WITH([cross-host], | |
75 | AC_HELP_STRING([--with-cross-host=HOST], | |
76 | [configuring with a cross compiler])) | |
77 | ||
78 | AC_ARG_WITH([newlib], | |
79 | AC_HELP_STRING([--with-newlib], | |
80 | [assume newlib as a system C library])) | |
81 | ||
ff66d28f PE |
82 | # We're almost certainly being configured before anything else which uses |
83 | # C++, so all of our AC_PROG_* discoveries will be cached. It's vital that | |
84 | # we not cache the value of CXX that we "discover" here, because it's set | |
85 | # to something unique for us and libjava. Other target libraries need to | |
86 | # find CXX for themselves. We yank the rug out from under the normal AC_* | |
87 | # process by sneakily renaming the cache variable. This also lets us debug | |
88 | # the value of "our" CXX in postmortems. | |
89 | # | |
90 | # We must also force CXX to /not/ be a precious variable, otherwise the | |
91 | # wrong (non-multilib-adjusted) value will be used in multilibs. This | |
92 | # little trick also affects CPPFLAGS, CXXFLAGS, and LDFLAGS. And as a side | |
93 | # effect, CXXFLAGS is no longer automagically subst'd, so we have to do | |
f6dda651 | 94 | # that ourselves. Un-preciousing AC_PROG_CC also affects CC and CFLAGS. |
ff66d28f PE |
95 | # |
96 | # -fno-builtin must be present here so that a non-conflicting form of | |
97 | # std::exit can be guessed by AC_PROG_CXX, and used in later tests. | |
fbe057bb | 98 | |
ff66d28f PE |
99 | m4_define([ac_cv_prog_CXX],[glibcxx_cv_prog_CXX]) |
100 | m4_rename([_AC_ARG_VAR_PRECIOUS],[glibcxx_PRECIOUS]) | |
101 | m4_define([_AC_ARG_VAR_PRECIOUS],[]) | |
102 | save_CXXFLAGS="$CXXFLAGS" | |
103 | CXXFLAGS="$CXXFLAGS -fno-builtin" | |
f6dda651 | 104 | AC_PROG_CC |
ff66d28f PE |
105 | AC_PROG_CXX |
106 | CXXFLAGS="$save_CXXFLAGS" | |
107 | m4_rename([glibcxx_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) | |
f6dda651 | 108 | AC_SUBST(CFLAGS) |
ff66d28f | 109 | AC_SUBST(CXXFLAGS) |
b2dad0e3 | 110 | |
ff66d28f PE |
111 | # Will set LN_S to either 'ln -s', 'ln', or 'cp -p' (if linking isn't |
112 | # available). Uncomment the next line to force a particular method. | |
113 | AC_PROG_LN_S | |
114 | #LN_S='cp -p' | |
115 | ||
5780a46b BK |
116 | AC_CHECK_TOOL(AS, as) |
117 | AC_CHECK_TOOL(AR, ar) | |
46840bcd | 118 | AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) |
b2dad0e3 | 119 | |
5780a46b | 120 | AM_MAINTAINER_MODE |
b2dad0e3 | 121 | |
92eabea2 PE |
122 | # Set up safe default values for all subsequent AM_CONDITIONAL tests |
123 | # which are themselves conditionally expanded. | |
124 | ## (Right now, this only matters for enable_wchar_t, but nothing prevents | |
125 | ## other macros from doing the same. This should be automated.) -pme | |
16da539b | 126 | need_libmath=no |
16da539b | 127 | |
ff66d28f PE |
128 | # Find platform-specific directories containing configuration info. |
129 | # Also possibly modify flags used elsewhere, as needed by the platform. | |
3d7c150e | 130 | GLIBCXX_CHECK_HOST |
b2dad0e3 BK |
131 | ]) |
132 | ||
133 | ||
c470c17d | 134 | dnl |
52b55e7d PE |
135 | dnl Tests for newer compiler features, or features that are present in newer |
136 | dnl compiler versions but not older compiler versions still in use, should | |
137 | dnl be placed here. | |
b2dad0e3 | 138 | dnl |
ff66d28f PE |
139 | dnl Defines: |
140 | dnl WERROR='-Werror' if requested and possible; g++'s that lack the | |
141 | dnl new inlining code or the new system_header pragma will die on -Werror. | |
142 | dnl Leave it out by default and use maint-mode to use it. | |
143 | dnl SECTION_FLAGS='-ffunction-sections -fdata-sections' if | |
144 | dnl compiler supports it and the user has not requested debug mode. | |
c21b6f87 | 145 | dnl |
f214923c | 146 | AC_DEFUN([GLIBCXX_CHECK_COMPILER_FEATURES], [ |
a4e99046 | 147 | # All these tests are for C++; save the language and the compiler flags. |
52b55e7d | 148 | # The CXXFLAGS thing is suspicious, but based on similar bits previously |
3d7c150e | 149 | # found in GLIBCXX_CONFIGURE. |
a4e99046 PE |
150 | AC_LANG_SAVE |
151 | AC_LANG_CPLUSPLUS | |
152 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
153 | ac_save_CXXFLAGS="$CXXFLAGS" | |
a4e99046 | 154 | |
7f586614 BK |
155 | # Check for maintainer-mode bits. |
156 | if test x"$USE_MAINTAINER_MODE" = xno; then | |
157 | WERROR='' | |
8bd636c5 | 158 | else |
7f586614 | 159 | WERROR='-Werror' |
8bd636c5 PE |
160 | fi |
161 | ||
c470c17d BK |
162 | # Check for -ffunction-sections -fdata-sections |
163 | AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections]) | |
0517cb99 | 164 | CXXFLAGS='-Werror -ffunction-sections -fdata-sections' |
ff66d28f | 165 | AC_TRY_COMPILE(, [int foo;], [ac_fdsections=yes], [ac_fdsections=no]) |
c470c17d BK |
166 | if test "$ac_test_CXXFLAGS" = set; then |
167 | CXXFLAGS="$ac_save_CXXFLAGS" | |
168 | else | |
169 | # this is the suspicious part | |
170 | CXXFLAGS='' | |
171 | fi | |
6aa43d99 | 172 | if test x"$ac_fdsections" = x"yes"; then |
c470c17d BK |
173 | SECTION_FLAGS='-ffunction-sections -fdata-sections' |
174 | fi | |
175 | AC_MSG_RESULT($ac_fdsections) | |
176 | ||
a4e99046 | 177 | AC_LANG_RESTORE |
8bd636c5 | 178 | AC_SUBST(WERROR) |
c470c17d | 179 | AC_SUBST(SECTION_FLAGS) |
b2dad0e3 BK |
180 | ]) |
181 | ||
c470c17d BK |
182 | |
183 | dnl | |
421173e6 PE |
184 | dnl If GNU ld is in use, check to see if tricky linker opts can be used. If |
185 | dnl the native linker is in use, all variables will be defined to something | |
186 | dnl safe (like an empty string). | |
187 | dnl | |
ff66d28f PE |
188 | dnl Defines: |
189 | dnl SECTION_LDFLAGS='-Wl,--gc-sections' if possible | |
a429affe | 190 | dnl OPT_LDFLAGS='-Wl,-O1' and '-z,relro' if possible |
ff66d28f PE |
191 | dnl LD (as a side effect of testing) |
192 | dnl Sets: | |
193 | dnl with_gnu_ld | |
194 | dnl glibcxx_gnu_ld_version (possibly) | |
195 | dnl | |
196 | dnl The last will be a single integer, e.g., version 1.23.45.0.67.89 will | |
197 | dnl set glibcxx_gnu_ld_version to 12345. Zeros cause problems. | |
c470c17d | 198 | dnl |
f214923c | 199 | AC_DEFUN([GLIBCXX_CHECK_LINKER_FEATURES], [ |
421173e6 PE |
200 | # If we're not using GNU ld, then there's no point in even trying these |
201 | # tests. Check for that first. We should have already tested for gld | |
202 | # by now (in libtool), but require it now just to be safe... | |
654421eb DE |
203 | test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS='' |
204 | test -z "$OPT_LDFLAGS" && OPT_LDFLAGS='' | |
421173e6 | 205 | AC_REQUIRE([AC_PROG_LD]) |
ff66d28f | 206 | AC_REQUIRE([AC_PROG_AWK]) |
5bd17d39 | 207 | |
c98b201b PE |
208 | # The name set by libtool depends on the version of libtool. Shame on us |
209 | # for depending on an impl detail, but c'est la vie. Older versions used | |
210 | # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on | |
211 | # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually | |
212 | # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't | |
213 | # set (hence we're using an older libtool), then set it. | |
214 | if test x${with_gnu_ld+set} != xset; then | |
215 | if test x${ac_cv_prog_gnu_ld+set} != xset; then | |
216 | # We got through "ac_require(ac_prog_ld)" and still not set? Huh? | |
217 | with_gnu_ld=no | |
218 | else | |
219 | with_gnu_ld=$ac_cv_prog_gnu_ld | |
220 | fi | |
221 | fi | |
222 | ||
223 | # Start by getting the version number. I think the libtool test already | |
224 | # does some of this, but throws away the result. | |
ac2b2479 | 225 | AC_MSG_CHECKING([for ld version]) |
c98b201b PE |
226 | changequote(,) |
227 | ldver=`$LD --version 2>/dev/null | head -1 | \ | |
228 | sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'` | |
229 | changequote([,]) | |
3d7c150e | 230 | glibcxx_gnu_ld_version=`echo $ldver | \ |
c98b201b | 231 | $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'` |
ac2b2479 | 232 | AC_MSG_RESULT($glibcxx_gnu_ld_version) |
c98b201b | 233 | |
5bd17d39 | 234 | # Set --gc-sections. |
ac2b2479 BK |
235 | glibcxx_gcsections_min_ld=21602 |
236 | if test x"$with_gnu_ld" = x"yes" && | |
237 | test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then | |
238 | ||
239 | # Sufficiently young GNU ld it is! Joy and bunny rabbits! | |
240 | # NB: This flag only works reliably after 2.16.1. Configure tests | |
241 | # for this are difficult, so hard wire a value that should work. | |
421173e6 | 242 | |
acb6e9be BK |
243 | # All these tests are for C++, but run with the "C" compiler driver. |
244 | # Need to do this so that g++ won't try to link in libstdc++/libsupc++. | |
421173e6 PE |
245 | ac_test_CFLAGS="${CFLAGS+set}" |
246 | ac_save_CFLAGS="$CFLAGS" | |
360e8759 | 247 | CFLAGS='-x c++ -Wl,--gc-sections' |
421173e6 PE |
248 | |
249 | # Check for -Wl,--gc-sections | |
250 | AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections]) | |
acb6e9be BK |
251 | AC_TRY_LINK([ int one(void) { return 1; } |
252 | int two(void) { return 2; } | |
253 | ], [ two(); ] , [ac_gcsections=yes], [ac_gcsections=no]) | |
360e8759 L |
254 | if test "$ac_gcsections" = "yes"; then |
255 | rm -f conftest.c | |
256 | touch conftest.c | |
257 | if $CC -c conftest.c; then | |
258 | if $LD --gc-sections -o conftest conftest.o 2>&1 | \ | |
259 | grep "Warning: gc-sections option ignored" > /dev/null; then | |
260 | ac_gcsections=no | |
261 | fi | |
262 | fi | |
263 | rm -f conftest.c conftest.o conftest | |
264 | fi | |
acb6e9be BK |
265 | if test "$ac_gcsections" = "yes"; then |
266 | SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS" | |
267 | fi | |
268 | AC_MSG_RESULT($ac_gcsections) | |
269 | ||
421173e6 PE |
270 | if test "$ac_test_CFLAGS" = set; then |
271 | CFLAGS="$ac_save_CFLAGS" | |
272 | else | |
273 | # this is the suspicious part | |
274 | CFLAGS='' | |
275 | fi | |
5bd17d39 | 276 | fi |
a9117427 | 277 | |
a429affe | 278 | # Set -z,relro. |
952c7b74 | 279 | # Note this is only for shared objects. |
a429affe BK |
280 | ac_ld_relro=no |
281 | if test x"$with_gnu_ld" = x"yes"; then | |
282 | AC_MSG_CHECKING([for ld that supports -Wl,-z,relro]) | |
283 | cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"` | |
284 | if test -n "$cxx_z_relo"; then | |
285 | OPT_LDFLAGS="-Wl,-z,relro" | |
286 | ac_ld_relro=yes | |
287 | fi | |
288 | AC_MSG_RESULT($ac_ld_relro) | |
289 | fi | |
290 | ||
5bd17d39 | 291 | # Set linker optimization flags. |
6aa43d99 | 292 | if test x"$with_gnu_ld" = x"yes"; then |
654421eb | 293 | OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS" |
421173e6 | 294 | fi |
5bd17d39 | 295 | |
c470c17d | 296 | AC_SUBST(SECTION_LDFLAGS) |
421173e6 | 297 | AC_SUBST(OPT_LDFLAGS) |
c470c17d BK |
298 | ]) |
299 | ||
300 | ||
b2dad0e3 | 301 | dnl |
347669a0 BK |
302 | dnl Check to see if this target can enable the iconv specializations. |
303 | dnl If --disable-c-mbchar was given, no wchar_t specialization is enabled. | |
304 | dnl (This must have been previously checked, along with the rest of C99 | |
305 | dnl support.) By default, iconv support is disabled. | |
b2dad0e3 | 306 | dnl |
ff66d28f | 307 | dnl Defines: |
347669a0 | 308 | dnl _GLIBCXX_USE_ICONV if all the bits are found. |
d54bc1d8 PE |
309 | dnl Substs: |
310 | dnl LIBICONV to a -l string containing the iconv library, if needed. | |
b2dad0e3 | 311 | dnl |
347669a0 | 312 | AC_DEFUN([GLIBCXX_CHECK_ICONV_SUPPORT], [ |
37bc6ca2 | 313 | |
347669a0 | 314 | enable_iconv=no |
ff66d28f | 315 | # Only continue checking if the ISO C99 headers exist and support is on. |
347669a0 | 316 | if test x"$enable_wchar_t" = xyes; then |
37bc6ca2 | 317 | |
ff66d28f PE |
318 | # Use iconv for wchar_t to char conversions. As such, check for |
319 | # X/Open Portability Guide, version 2 features (XPG2). | |
7b331228 BK |
320 | AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no) |
321 | AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no) | |
322 | ||
ff66d28f | 323 | # Check for existence of libiconv.a providing XPG2 wchar_t support. |
d54bc1d8 | 324 | AC_CHECK_LIB(iconv, iconv, LIBICONV="-liconv") |
7b331228 | 325 | ac_save_LIBS="$LIBS" |
d54bc1d8 PE |
326 | LIBS="$LIBS $LIBICONV" |
327 | AC_SUBST(LIBICONV) | |
7b331228 | 328 | |
ff66d28f PE |
329 | AC_CHECK_FUNCS([iconv_open iconv_close iconv nl_langinfo], |
330 | [ac_XPG2funcs=yes], [ac_XPG2funcs=no]) | |
37bc6ca2 | 331 | |
7b331228 | 332 | LIBS="$ac_save_LIBS" |
5b20f7a0 | 333 | |
a0cb1aa7 PE |
334 | if test x"$ac_has_iconv_h" = xyes && |
335 | test x"$ac_has_langinfo_h" = xyes && | |
ff66d28f PE |
336 | test x"$ac_XPG2funcs" = xyes; |
337 | then | |
347669a0 BK |
338 | AC_DEFINE([_GLIBCXX_USE_ICONV],1, |
339 | [Define if iconv and related functions exist and are usable.]) | |
340 | enable_iconv=yes | |
15bcd79a | 341 | fi |
b2dad0e3 | 342 | fi |
347669a0 BK |
343 | AC_MSG_CHECKING([for enabled iconv specializations]) |
344 | AC_MSG_RESULT($enable_iconv) | |
b2dad0e3 BK |
345 | ]) |
346 | ||
347 | ||
b2dad0e3 | 348 | dnl |
ff66d28f PE |
349 | dnl Check for headers for, and arguments to, the setrlimit() function. |
350 | dnl Used only in testsuite_hooks.h. Called from GLIBCXX_CONFIGURE_TESTSUITE. | |
6aa43d99 | 351 | dnl |
ff66d28f | 352 | dnl Defines: |
2ae6e982 PC |
353 | dnl _GLIBCXX_RES_LIMITS if we can set artificial resource limits |
354 | dnl various HAVE_LIMIT_* for individual limit names | |
6aa43d99 | 355 | dnl |
f214923c | 356 | AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT_ancilliary], [ |
e0103440 | 357 | AC_MSG_CHECKING([for RLIMIT_$1]) |
ff66d28f PE |
358 | AC_TRY_COMPILE( |
359 | [#include <unistd.h> | |
360 | #include <sys/time.h> | |
361 | #include <sys/resource.h> | |
362 | ], | |
363 | [ int f = RLIMIT_$1 ; ], | |
364 | [glibcxx_mresult=1], [glibcxx_mresult=0]) | |
2ae6e982 | 365 | AC_DEFINE_UNQUOTED(HAVE_LIMIT_$1, $glibcxx_mresult, |
ff66d28f | 366 | [Only used in build directory testsuite_hooks.h.]) |
e0103440 GK |
367 | if test $glibcxx_mresult = 1 ; then res=yes ; else res=no ; fi |
368 | AC_MSG_RESULT($res) | |
ff66d28f PE |
369 | ]) |
370 | ||
f214923c | 371 | AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT], [ |
ff66d28f PE |
372 | setrlimit_have_headers=yes |
373 | AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h, | |
374 | [], | |
375 | [setrlimit_have_headers=no]) | |
376 | # If don't have the headers, then we can't run the tests now, and we | |
377 | # won't be seeing any of these during testsuite compilation. | |
378 | if test $setrlimit_have_headers = yes; then | |
379 | # Can't do these in a loop, else the resulting syntax is wrong. | |
380 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(DATA) | |
381 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(RSS) | |
382 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(VMEM) | |
383 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(AS) | |
2ae6e982 | 384 | GLIBCXX_CHECK_SETRLIMIT_ancilliary(FSIZE) |
ff66d28f PE |
385 | |
386 | # Check for rlimit, setrlimit. | |
387 | AC_CACHE_VAL(ac_setrlimit, [ | |
388 | AC_TRY_COMPILE( | |
389 | [#include <unistd.h> | |
390 | #include <sys/time.h> | |
391 | #include <sys/resource.h> | |
392 | ], | |
393 | [struct rlimit r; | |
394 | setrlimit(0, &r);], | |
395 | [ac_setrlimit=yes], [ac_setrlimit=no]) | |
396 | ]) | |
397 | fi | |
398 | ||
2ae6e982 | 399 | AC_MSG_CHECKING([for testsuite resource limits support]) |
ff66d28f | 400 | if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then |
2ae6e982 | 401 | ac_res_limits=yes |
4651e622 KC |
402 | AC_DEFINE(_GLIBCXX_RES_LIMITS, 1, |
403 | [Define if using setrlimit to set resource limits during | |
404 | "make check"]) | |
ff66d28f | 405 | else |
2ae6e982 | 406 | ac_res_limits=no |
ff66d28f | 407 | fi |
2ae6e982 | 408 | AC_MSG_RESULT($ac_res_limits) |
6aa43d99 BK |
409 | ]) |
410 | ||
411 | ||
6aa43d99 | 412 | dnl |
ff66d28f PE |
413 | dnl Check whether S_ISREG (Posix) or S_IFREG is available in <sys/stat.h>. |
414 | dnl Define HAVE_S_ISREG / HAVE_S_IFREG appropriately. | |
6aa43d99 | 415 | dnl |
f214923c | 416 | AC_DEFUN([GLIBCXX_CHECK_S_ISREG_OR_S_IFREG], [ |
e0103440 | 417 | AC_MSG_CHECKING([for S_ISREG or S_IFREG]) |
ff66d28f PE |
418 | AC_CACHE_VAL(glibcxx_cv_S_ISREG, [ |
419 | AC_TRY_LINK( | |
420 | [#include <sys/stat.h>], | |
421 | [struct stat buffer; | |
422 | fstat(0, &buffer); | |
423 | S_ISREG(buffer.st_mode);], | |
424 | [glibcxx_cv_S_ISREG=yes], | |
425 | [glibcxx_cv_S_ISREG=no]) | |
426 | ]) | |
427 | AC_CACHE_VAL(glibcxx_cv_S_IFREG, [ | |
428 | AC_TRY_LINK( | |
429 | [#include <sys/stat.h>], | |
430 | [struct stat buffer; | |
431 | fstat(0, &buffer); | |
432 | S_IFREG & buffer.st_mode;], | |
433 | [glibcxx_cv_S_IFREG=yes], | |
434 | [glibcxx_cv_S_IFREG=no]) | |
435 | ]) | |
e0103440 | 436 | res=no |
ff66d28f | 437 | if test $glibcxx_cv_S_ISREG = yes; then |
4651e622 KC |
438 | AC_DEFINE(HAVE_S_ISREG, 1, |
439 | [Define if S_IFREG is available in <sys/stat.h>.]) | |
e0103440 | 440 | res=S_ISREG |
ff66d28f | 441 | elif test $glibcxx_cv_S_IFREG = yes; then |
4651e622 KC |
442 | AC_DEFINE(HAVE_S_IFREG, 1, |
443 | [Define if S_IFREG is available in <sys/stat.h>.]) | |
e0103440 | 444 | res=S_IFREG |
ff66d28f | 445 | fi |
e0103440 | 446 | AC_MSG_RESULT($res) |
b2dad0e3 BK |
447 | ]) |
448 | ||
449 | ||
dcfa0bc8 | 450 | dnl |
ff66d28f | 451 | dnl Check whether poll is available in <poll.h>, and define HAVE_POLL. |
dcfa0bc8 | 452 | dnl |
f214923c | 453 | AC_DEFUN([GLIBCXX_CHECK_POLL], [ |
e0103440 | 454 | AC_MSG_CHECKING([for poll]) |
ff66d28f | 455 | AC_CACHE_VAL(glibcxx_cv_POLL, [ |
3d05b345 | 456 | AC_TRY_LINK( |
ff66d28f PE |
457 | [#include <poll.h>], |
458 | [struct pollfd pfd[1]; | |
459 | pfd[0].events = POLLIN; | |
460 | poll(pfd, 1, 0);], | |
461 | [glibcxx_cv_POLL=yes], | |
462 | [glibcxx_cv_POLL=no]) | |
463 | ]) | |
464 | if test $glibcxx_cv_POLL = yes; then | |
4651e622 | 465 | AC_DEFINE(HAVE_POLL, 1, [Define if poll is available in <poll.h>.]) |
ff66d28f | 466 | fi |
e0103440 | 467 | AC_MSG_RESULT($glibcxx_cv_POLL) |
ff66d28f PE |
468 | ]) |
469 | ||
470 | ||
471 | dnl | |
472 | dnl Check whether writev is available in <sys/uio.h>, and define HAVE_WRITEV. | |
473 | dnl | |
f214923c | 474 | AC_DEFUN([GLIBCXX_CHECK_WRITEV], [ |
e0103440 | 475 | AC_MSG_CHECKING([for writev]) |
ff66d28f | 476 | AC_CACHE_VAL(glibcxx_cv_WRITEV, [ |
3d05b345 | 477 | AC_TRY_LINK( |
ff66d28f PE |
478 | [#include <sys/uio.h>], |
479 | [struct iovec iov[2]; | |
480 | writev(0, iov, 0);], | |
481 | [glibcxx_cv_WRITEV=yes], | |
482 | [glibcxx_cv_WRITEV=no]) | |
483 | ]) | |
484 | if test $glibcxx_cv_WRITEV = yes; then | |
4651e622 | 485 | AC_DEFINE(HAVE_WRITEV, 1, [Define if writev is available in <sys/uio.h>.]) |
ff66d28f | 486 | fi |
e0103440 | 487 | AC_MSG_RESULT($glibcxx_cv_WRITEV) |
ff66d28f PE |
488 | ]) |
489 | ||
490 | ||
3d05b345 PC |
491 | dnl |
492 | dnl Check whether int64_t is available in <stdint.h>, and define HAVE_INT64_T. | |
493 | dnl | |
f214923c | 494 | AC_DEFUN([GLIBCXX_CHECK_INT64_T], [ |
e0103440 | 495 | AC_MSG_CHECKING([for int64_t]) |
3d05b345 PC |
496 | AC_CACHE_VAL(glibcxx_cv_INT64_T, [ |
497 | AC_TRY_COMPILE( | |
498 | [#include <stdint.h>], | |
499 | [int64_t var;], | |
500 | [glibcxx_cv_INT64_T=yes], | |
501 | [glibcxx_cv_INT64_T=no]) | |
502 | ]) | |
503 | if test $glibcxx_cv_INT64_T = yes; then | |
4651e622 | 504 | AC_DEFINE(HAVE_INT64_T, 1, [Define if int64_t is available in <stdint.h>.]) |
3d05b345 | 505 | fi |
e0103440 | 506 | AC_MSG_RESULT($glibcxx_cv_INT64_T) |
3d05b345 PC |
507 | ]) |
508 | ||
509 | ||
510 | dnl | |
511 | dnl Check whether LFS support is available. | |
512 | dnl | |
f214923c | 513 | AC_DEFUN([GLIBCXX_CHECK_LFS], [ |
0c6b814a | 514 | AC_LANG_SAVE |
9d47bc51 PC |
515 | AC_LANG_CPLUSPLUS |
516 | ac_save_CXXFLAGS="$CXXFLAGS" | |
517 | CXXFLAGS="$CXXFLAGS -fno-exceptions" | |
e0103440 | 518 | AC_MSG_CHECKING([for LFS support]) |
3d05b345 PC |
519 | AC_CACHE_VAL(glibcxx_cv_LFS, [ |
520 | AC_TRY_LINK( | |
0c6b814a PC |
521 | [#include <unistd.h> |
522 | #include <stdio.h> | |
dd5d134b | 523 | #include <sys/stat.h> |
0c6b814a | 524 | ], |
5c89246d PC |
525 | [FILE* fp; |
526 | fopen64("t", "w"); | |
527 | fseeko64(fp, 0, SEEK_CUR); | |
528 | ftello64(fp); | |
dd5d134b PC |
529 | lseek64(1, 0, SEEK_CUR); |
530 | struct stat64 buf; | |
531 | fstat64(1, &buf);], | |
3d05b345 PC |
532 | [glibcxx_cv_LFS=yes], |
533 | [glibcxx_cv_LFS=no]) | |
534 | ]) | |
535 | if test $glibcxx_cv_LFS = yes; then | |
4651e622 | 536 | AC_DEFINE(_GLIBCXX_USE_LFS, 1, [Define if LFS support is available.]) |
3d05b345 | 537 | fi |
e0103440 | 538 | AC_MSG_RESULT($glibcxx_cv_LFS) |
9d47bc51 PC |
539 | CXXFLAGS="$ac_save_CXXFLAGS" |
540 | AC_LANG_RESTORE | |
3d05b345 PC |
541 | ]) |
542 | ||
543 | ||
1165dc50 PC |
544 | dnl |
545 | dnl Check for whether a fully dynamic basic_string implementation should | |
546 | dnl be turned on, that does not put empty objects in per-process static | |
547 | dnl memory (mostly useful together with shared memory allocators, see PR | |
548 | dnl libstdc++/16612 for details). | |
549 | dnl | |
550 | dnl --enable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING | |
551 | dnl --disable-fully-dynamic-string leaves _GLIBCXX_FULLY_DYNAMIC_STRING undefined | |
552 | dnl + Usage: GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING[(DEFAULT)] | |
553 | dnl Where DEFAULT is either `yes' or `no'. | |
554 | dnl | |
555 | AC_DEFUN([GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING], [ | |
556 | GLIBCXX_ENABLE(fully-dynamic-string,$1,,[do not put empty strings in per-process static memory]) | |
557 | if test $enable_fully_dynamic_string = yes; then | |
4651e622 KC |
558 | AC_DEFINE(_GLIBCXX_FULLY_DYNAMIC_STRING, 1, |
559 | [Define if a fully dynamic basic_string is wanted.]) | |
1165dc50 PC |
560 | fi |
561 | ]) | |
562 | ||
563 | ||
ff66d28f PE |
564 | dnl |
565 | dnl Does any necessary configuration of the testsuite directory. Generates | |
566 | dnl the testsuite_hooks.h header. | |
567 | dnl | |
568 | dnl GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE must be done before this. | |
569 | dnl | |
570 | dnl Sets: | |
84946e72 | 571 | dnl enable_abi_check |
e3f78d9b BK |
572 | dnl GLIBCXX_TEST_WCHAR_T |
573 | dnl GLIBCXX_TEST_THREAD | |
ff66d28f PE |
574 | dnl Substs: |
575 | dnl baseline_dir | |
576 | dnl | |
f214923c | 577 | AC_DEFUN([GLIBCXX_CONFIGURE_TESTSUITE], [ |
0646b059 | 578 | if $GLIBCXX_IS_NATIVE ; then |
2ae6e982 | 579 | # Do checks for resource limit functions. |
ff66d28f PE |
580 | GLIBCXX_CHECK_SETRLIMIT |
581 | ||
582 | # Look for setenv, so that extended locale tests can be performed. | |
583 | GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv) | |
0646b059 | 584 | fi |
dbc66058 | 585 | |
0646b059 GK |
586 | if $GLIBCXX_IS_NATIVE && test $is_hosted = yes && |
587 | test $enable_symvers != no; then | |
588 | case "$host" in | |
589 | *-*-cygwin*) | |
590 | enable_abi_check=no ;; | |
591 | *) | |
592 | enable_abi_check=yes ;; | |
593 | esac | |
dbc66058 DJ |
594 | else |
595 | # Only build this as native, since automake does not understand | |
596 | # CXX_FOR_BUILD. | |
597 | enable_abi_check=no | |
ff66d28f | 598 | fi |
84946e72 | 599 | |
ff66d28f | 600 | # Export file names for ABI checking. |
fb5c309d | 601 | baseline_dir="$glibcxx_srcdir/config/abi/post/${abi_baseline_pair}\$(MULTISUBDIR)" |
ff66d28f | 602 | AC_SUBST(baseline_dir) |
ff66d28f PE |
603 | ]) |
604 | ||
605 | ||
606 | dnl | |
607 | dnl Set up *_INCLUDES variables for all sundry Makefile.am's. | |
608 | dnl | |
609 | dnl Substs: | |
610 | dnl GLIBCXX_INCLUDES | |
611 | dnl TOPLEVEL_INCLUDES | |
ff66d28f | 612 | dnl |
f214923c | 613 | AC_DEFUN([GLIBCXX_EXPORT_INCLUDES], [ |
0df3f383 PE |
614 | # Used for every C++ compile we perform. |
615 | GLIBCXX_INCLUDES="\ | |
616 | -I$glibcxx_builddir/include/$host_alias \ | |
617 | -I$glibcxx_builddir/include \ | |
618 | -I$glibcxx_srcdir/libsupc++" | |
ff66d28f | 619 | |
0df3f383 | 620 | # For Canadian crosses, pick this up too. |
ff66d28f | 621 | if test $CANADIAN = yes; then |
37e0ff11 | 622 | GLIBCXX_INCLUDES="$GLIBCXX_INCLUDES -I\${includedir}" |
ff66d28f PE |
623 | fi |
624 | ||
0df3f383 PE |
625 | # Stuff in the actual top level. Currently only used by libsupc++ to |
626 | # get unwind* headers from the gcc dir. | |
627 | #TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/gcc -I$(toplevel_srcdir)/include' | |
628 | TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/gcc' | |
ff66d28f PE |
629 | |
630 | # Now, export this to all the little Makefiles.... | |
631 | AC_SUBST(GLIBCXX_INCLUDES) | |
632 | AC_SUBST(TOPLEVEL_INCLUDES) | |
ff66d28f PE |
633 | ]) |
634 | ||
635 | ||
636 | dnl | |
637 | dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's. | |
638 | dnl (SECTION_FLAGS is done under CHECK_COMPILER_FEATURES.) | |
639 | dnl | |
640 | dnl Substs: | |
641 | dnl OPTIMIZE_CXXFLAGS | |
642 | dnl WARN_FLAGS | |
643 | dnl | |
f214923c | 644 | AC_DEFUN([GLIBCXX_EXPORT_FLAGS], [ |
ff66d28f PE |
645 | # Optimization flags that are probably a good idea for thrill-seekers. Just |
646 | # uncomment the lines below and make, everything else is ready to go... | |
647 | # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc | |
648 | OPTIMIZE_CXXFLAGS= | |
649 | AC_SUBST(OPTIMIZE_CXXFLAGS) | |
650 | ||
dc7c62ae | 651 | WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual' |
ff66d28f PE |
652 | AC_SUBST(WARN_FLAGS) |
653 | ]) | |
654 | ||
655 | ||
656 | dnl | |
657 | dnl All installation directory information is determined here. | |
658 | dnl | |
659 | dnl Substs: | |
660 | dnl gxx_install_dir | |
661 | dnl glibcxx_prefixdir | |
662 | dnl glibcxx_toolexecdir | |
663 | dnl glibcxx_toolexeclibdir | |
664 | dnl | |
665 | dnl Assumes cross_compiling bits already done, and with_cross_host in | |
666 | dnl particular. | |
667 | dnl | |
f214923c | 668 | AC_DEFUN([GLIBCXX_EXPORT_INSTALL_INFO], [ |
ff66d28f PE |
669 | glibcxx_toolexecdir=no |
670 | glibcxx_toolexeclibdir=no | |
671 | glibcxx_prefixdir=$prefix | |
672 | ||
673 | AC_MSG_CHECKING([for gxx-include-dir]) | |
674 | AC_ARG_WITH([gxx-include-dir], | |
675 | AC_HELP_STRING([--with-gxx-include-dir=DIR], | |
676 | [installation directory for include files]), | |
677 | [case "$withval" in | |
678 | yes) AC_MSG_ERROR([Missing directory for --with-gxx-include-dir]) ;; | |
679 | no) gxx_include_dir=no ;; | |
680 | *) gxx_include_dir=$withval ;; | |
681 | esac], | |
682 | [gxx_include_dir=no]) | |
683 | AC_MSG_RESULT($gxx_include_dir) | |
684 | ||
685 | AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) | |
686 | AC_ARG_ENABLE([version-specific-runtime-libs], | |
687 | AC_HELP_STRING([--enable-version-specific-runtime-libs], | |
688 | [Specify that runtime libraries should be installed in a compiler-specific directory]), | |
689 | [case "$enableval" in | |
690 | yes) version_specific_libs=yes ;; | |
691 | no) version_specific_libs=no ;; | |
692 | *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; | |
693 | esac], | |
694 | [version_specific_libs=no]) | |
695 | AC_MSG_RESULT($version_specific_libs) | |
696 | ||
697 | # Default case for install directory for include files. | |
698 | if test $version_specific_libs = no && test $gxx_include_dir = no; then | |
47194af4 | 699 | gxx_include_dir='${prefix}/include/c++/${gcc_version}' |
ff66d28f PE |
700 | fi |
701 | ||
702 | # Version-specific runtime libs processing. | |
703 | if test $version_specific_libs = yes; then | |
704 | # Need the gcc compiler version to know where to install libraries | |
705 | # and header files if --enable-version-specific-runtime-libs option | |
0314451d GK |
706 | # is selected. FIXME: these variables are misnamed, there are |
707 | # no executables installed in _toolexecdir or _toolexeclibdir. | |
ff66d28f | 708 | if test x"$gxx_include_dir" = x"no"; then |
47194af4 | 709 | gxx_include_dir='${libdir}/gcc/${host_alias}/${gcc_version}/include/c++' |
ff66d28f | 710 | fi |
0314451d | 711 | glibcxx_toolexecdir='${libdir}/gcc/${host_alias}' |
47194af4 | 712 | glibcxx_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)' |
ff66d28f PE |
713 | fi |
714 | ||
715 | # Calculate glibcxx_toolexecdir, glibcxx_toolexeclibdir | |
716 | # Install a library built with a cross compiler in tooldir, not libdir. | |
717 | if test x"$glibcxx_toolexecdir" = x"no"; then | |
718 | if test -n "$with_cross_host" && | |
719 | test x"$with_cross_host" != x"no"; then | |
fbe057bb PE |
720 | glibcxx_toolexecdir='${exec_prefix}/${host_alias}' |
721 | glibcxx_toolexeclibdir='${toolexecdir}/lib' | |
ff66d28f | 722 | else |
0314451d | 723 | glibcxx_toolexecdir='${libdir}/gcc/${host_alias}' |
fbe057bb | 724 | glibcxx_toolexeclibdir='${libdir}' |
ff66d28f | 725 | fi |
fbe057bb | 726 | multi_os_directory=`$CXX -print-multi-os-directory` |
ff66d28f PE |
727 | case $multi_os_directory in |
728 | .) ;; # Avoid trailing /. | |
729 | *) glibcxx_toolexeclibdir=$glibcxx_toolexeclibdir/$multi_os_directory ;; | |
730 | esac | |
731 | fi | |
732 | ||
733 | AC_MSG_CHECKING([for install location]) | |
734 | AC_MSG_RESULT($gxx_include_dir) | |
735 | ||
736 | AC_SUBST(glibcxx_prefixdir) | |
737 | AC_SUBST(gxx_include_dir) | |
738 | AC_SUBST(glibcxx_toolexecdir) | |
739 | AC_SUBST(glibcxx_toolexeclibdir) | |
740 | ]) | |
741 | ||
742 | ||
743 | dnl | |
744 | dnl GLIBCXX_ENABLE | |
745 | dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING) | |
746 | dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c) | |
747 | dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER) | |
748 | dnl | |
749 | dnl See docs/html/17_intro/configury.html#enable for documentation. | |
750 | dnl | |
751 | m4_define([GLIBCXX_ENABLE],[dnl | |
752 | m4_define([_g_switch],[--enable-$1])dnl | |
753 | m4_define([_g_help],[AC_HELP_STRING(_g_switch$3,[$4 @<:@default=$2@:>@])])dnl | |
754 | AC_ARG_ENABLE($1,_g_help, | |
755 | m4_bmatch([$5], | |
756 | [^permit ], | |
757 | [[ | |
758 | case "$enableval" in | |
759 | m4_bpatsubst([$5],[permit ])) ;; | |
760 | *) AC_MSG_ERROR(Unknown argument to enable/disable $1) ;; | |
761 | dnl Idea for future: generate a URL pointing to | |
762 | dnl "onlinedocs/configopts.html#whatever" | |
763 | esac | |
764 | ]], | |
765 | [^$], | |
766 | [[ | |
767 | case "$enableval" in | |
768 | yes|no) ;; | |
769 | *) AC_MSG_ERROR(Argument to enable/disable $1 must be yes or no) ;; | |
770 | esac | |
771 | ]], | |
772 | [[$5]]), | |
773 | [enable_]m4_bpatsubst([$1],-,_)[=][$2]) | |
774 | m4_undefine([_g_switch])dnl | |
775 | m4_undefine([_g_help])dnl | |
776 | ]) | |
777 | ||
778 | ||
779 | dnl | |
780 | dnl Check for ISO/IEC 9899:1999 "C99" support. | |
781 | dnl | |
782 | dnl --enable-c99 defines _GLIBCXX_USE_C99 | |
783 | dnl --disable-c99 leaves _GLIBCXX_USE_C99 undefined | |
784 | dnl + Usage: GLIBCXX_ENABLE_C99[(DEFAULT)] | |
785 | dnl Where DEFAULT is either `yes' or `no'. | |
786 | dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'. | |
787 | dnl | |
f214923c | 788 | AC_DEFUN([GLIBCXX_ENABLE_C99], [ |
ff66d28f PE |
789 | GLIBCXX_ENABLE(c99,$1,,[turns on ISO/IEC 9899:1999 support]) |
790 | ||
347669a0 BK |
791 | # Test wchar.h for mbstate_t, which is needed for char_traits and fpos |
792 | # even if C99 support is turned off. | |
793 | AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no) | |
794 | AC_MSG_CHECKING([for mbstate_t]) | |
795 | AC_TRY_COMPILE([#include <wchar.h>], | |
796 | [mbstate_t teststate;], | |
797 | have_mbstate_t=yes, have_mbstate_t=no) | |
798 | AC_MSG_RESULT($have_mbstate_t) | |
799 | if test x"$have_mbstate_t" = xyes; then | |
4651e622 | 800 | AC_DEFINE(HAVE_MBSTATE_T,1,[Define if mbstate_t exists in wchar.h.]) |
347669a0 BK |
801 | fi |
802 | ||
803 | if test x"$enable_c99" = x"yes"; then | |
804 | ||
ff66d28f PE |
805 | AC_LANG_SAVE |
806 | AC_LANG_CPLUSPLUS | |
807 | ||
808 | # Check for the existence of <math.h> functions used if C99 is enabled. | |
ff66d28f | 809 | AC_MSG_CHECKING([for ISO C99 support in <math.h>]) |
347669a0 | 810 | AC_CACHE_VAL(ac_c99_math, [ |
ff66d28f | 811 | AC_TRY_COMPILE([#include <math.h>], |
347669a0 BK |
812 | [fpclassify(0.0); |
813 | isfinite(0.0); | |
814 | isinf(0.0); | |
815 | isnan(0.0); | |
816 | isnormal(0.0); | |
817 | signbit(0.0); | |
818 | isgreater(0.0,0.0); | |
819 | isgreaterequal(0.0,0.0); | |
820 | isless(0.0,0.0); | |
821 | islessequal(0.0,0.0); | |
822 | islessgreater(0.0,0.0); | |
823 | islessgreater(0.0,0.0); | |
824 | isunordered(0.0,0.0); | |
825 | ],[ac_c99_math=yes], [ac_c99_math=no]) | |
826 | ]) | |
ff66d28f | 827 | AC_MSG_RESULT($ac_c99_math) |
517da0ce | 828 | if test x"$ac_c99_math" = x"yes"; then |
4651e622 KC |
829 | AC_DEFINE(_GLIBCXX_USE_C99_MATH, 1, |
830 | [Define if C99 functions or macros in <math.h> should be imported | |
831 | in <cmath> in namespace std.]) | |
517da0ce MM |
832 | fi |
833 | ||
225962a0 | 834 | # Check for the existence of <complex.h> complex math functions. |
52e6723c BK |
835 | # This is necessary even though libstdc++ uses the builtin versions |
836 | # of these functions, because if the builtin cannot be used, a reference | |
837 | # to the library function is emitted. | |
838 | AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no) | |
839 | ac_c99_complex=no; | |
840 | if test x"$ac_has_complex_h" = x"yes"; then | |
52e6723c BK |
841 | AC_MSG_CHECKING([for ISO C99 support in <complex.h>]) |
842 | AC_TRY_COMPILE([#include <complex.h>], | |
347669a0 BK |
843 | [typedef __complex__ float float_type; float_type tmpf; |
844 | cabsf(tmpf); | |
845 | cargf(tmpf); | |
846 | ccosf(tmpf); | |
847 | ccoshf(tmpf); | |
848 | cexpf(tmpf); | |
9d997b96 | 849 | clogf(tmpf); |
347669a0 BK |
850 | csinf(tmpf); |
851 | csinhf(tmpf); | |
852 | csqrtf(tmpf); | |
853 | ctanf(tmpf); | |
854 | ctanhf(tmpf); | |
855 | cpowf(tmpf, tmpf); | |
856 | typedef __complex__ double double_type; double_type tmpd; | |
857 | cabs(tmpd); | |
858 | carg(tmpd); | |
859 | ccos(tmpd); | |
860 | ccosh(tmpd); | |
861 | cexp(tmpd); | |
9d997b96 | 862 | clog(tmpd); |
347669a0 BK |
863 | csin(tmpd); |
864 | csinh(tmpd); | |
865 | csqrt(tmpd); | |
866 | ctan(tmpd); | |
867 | ctanh(tmpd); | |
868 | cpow(tmpd, tmpd); | |
869 | typedef __complex__ long double ld_type; ld_type tmpld; | |
870 | cabsl(tmpld); | |
871 | cargl(tmpld); | |
872 | ccosl(tmpld); | |
873 | ccoshl(tmpld); | |
874 | cexpl(tmpld); | |
9d997b96 | 875 | clogl(tmpld); |
347669a0 BK |
876 | csinl(tmpld); |
877 | csinhl(tmpld); | |
878 | csqrtl(tmpld); | |
879 | ctanl(tmpld); | |
880 | ctanhl(tmpld); | |
881 | cpowl(tmpld, tmpld); | |
882 | ],[ac_c99_complex=yes], [ac_c99_complex=no]) | |
52e6723c BK |
883 | fi |
884 | AC_MSG_RESULT($ac_c99_complex) | |
52e6723c | 885 | if test x"$ac_c99_complex" = x"yes"; then |
4651e622 KC |
886 | AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX, 1, |
887 | [Define if C99 functions in <complex.h> should be used in | |
888 | <complex>. Using compiler builtins for these functions requires | |
889 | corresponding C99 library functions to be present.]) | |
52e6723c BK |
890 | fi |
891 | ||
ff66d28f | 892 | # Check for the existence in <stdio.h> of vscanf, et. al. |
ff66d28f | 893 | AC_MSG_CHECKING([for ISO C99 support in <stdio.h>]) |
347669a0 | 894 | AC_CACHE_VAL(ac_c99_stdio, [ |
ff66d28f | 895 | AC_TRY_COMPILE([#include <stdio.h> |
347669a0 | 896 | #include <stdarg.h> |
ff66d28f | 897 | void foo(char* fmt, ...) |
347669a0 BK |
898 | { |
899 | va_list args; va_start(args, fmt); | |
900 | vfscanf(stderr, "%i", args); | |
901 | vscanf("%i", args); | |
902 | vsnprintf(fmt, 0, "%i", args); | |
903 | vsscanf(fmt, "%i", args); | |
904 | }], | |
905 | [snprintf("12", 0, "%i");], | |
906 | [ac_c99_stdio=yes], [ac_c99_stdio=no]) | |
907 | ]) | |
ff66d28f PE |
908 | AC_MSG_RESULT($ac_c99_stdio) |
909 | ||
910 | # Check for the existence in <stdlib.h> of lldiv_t, et. al. | |
ff66d28f | 911 | AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>]) |
347669a0 | 912 | AC_CACHE_VAL(ac_c99_stdlib, [ |
ff66d28f | 913 | AC_TRY_COMPILE([#include <stdlib.h>], |
10d877a8 PC |
914 | [char* tmp; |
915 | strtof("gnu", &tmp); | |
347669a0 | 916 | strtold("gnu", &tmp); |
10d877a8 PC |
917 | strtoll("gnu", &tmp, 10); |
918 | strtoull("gnu", &tmp, 10); | |
919 | llabs(10); | |
920 | lldiv(10,1); | |
921 | atoll("10"); | |
347669a0 BK |
922 | _Exit(0); |
923 | lldiv_t mydivt;],[ac_c99_stdlib=yes], [ac_c99_stdlib=no]) | |
924 | ]) | |
ff66d28f PE |
925 | AC_MSG_RESULT($ac_c99_stdlib) |
926 | ||
347669a0 BK |
927 | # Check for the existence in <wchar.h> of wcstoull, WEOF, etc. |
928 | AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no) | |
929 | ac_c99_wchar=no; | |
930 | if test x"$ac_has_wchar_h" = xyes && | |
931 | test x"$ac_has_wctype_h" = xyes; then | |
932 | AC_TRY_COMPILE([#include <wchar.h> | |
933 | #include <stddef.h> | |
934 | wint_t i; | |
935 | long l = WEOF; | |
936 | long j = WCHAR_MIN; | |
937 | long k = WCHAR_MAX; | |
938 | namespace test | |
939 | { | |
940 | using ::btowc; | |
941 | using ::fgetwc; | |
942 | using ::fgetws; | |
943 | using ::fputwc; | |
944 | using ::fputws; | |
945 | using ::fwide; | |
946 | using ::fwprintf; | |
947 | using ::fwscanf; | |
948 | using ::getwc; | |
949 | using ::getwchar; | |
950 | using ::mbrlen; | |
951 | using ::mbrtowc; | |
952 | using ::mbsinit; | |
953 | using ::mbsrtowcs; | |
954 | using ::putwc; | |
955 | using ::putwchar; | |
956 | using ::swprintf; | |
957 | using ::swscanf; | |
958 | using ::ungetwc; | |
959 | using ::vfwprintf; | |
960 | using ::vswprintf; | |
961 | using ::vwprintf; | |
962 | using ::wcrtomb; | |
963 | using ::wcscat; | |
964 | using ::wcschr; | |
965 | using ::wcscmp; | |
966 | using ::wcscoll; | |
967 | using ::wcscpy; | |
968 | using ::wcscspn; | |
969 | using ::wcsftime; | |
970 | using ::wcslen; | |
971 | using ::wcsncat; | |
972 | using ::wcsncmp; | |
973 | using ::wcsncpy; | |
974 | using ::wcspbrk; | |
975 | using ::wcsrchr; | |
976 | using ::wcsrtombs; | |
977 | using ::wcsspn; | |
978 | using ::wcsstr; | |
979 | using ::wcstod; | |
980 | using ::wcstok; | |
981 | using ::wcstol; | |
982 | using ::wcstold; | |
983 | using ::wcstoll; | |
984 | using ::wcstoul; | |
985 | using ::wcstoull; | |
986 | using ::wcsxfrm; | |
987 | using ::wctob; | |
988 | using ::wmemchr; | |
989 | using ::wmemcmp; | |
990 | using ::wmemcpy; | |
991 | using ::wmemmove; | |
992 | using ::wmemset; | |
993 | using ::wprintf; | |
994 | using ::wscanf; | |
995 | } | |
996 | ],[],[ac_c99_wchar=yes], [ac_c99_wchar=no]) | |
997 | ||
998 | # Checks for wide character functions that may not be present. | |
999 | # Injection of these is wrapped with guard macros. | |
1000 | # NB: only put functions here, instead of immediately above, if | |
1001 | # absolutely necessary. | |
1002 | AC_TRY_COMPILE([#include <wchar.h> | |
1003 | namespace test { using ::vfwscanf; } ], [], | |
1004 | [AC_DEFINE(HAVE_VFWSCANF,1, | |
1005 | [Defined if vfwscanf exists.])],[]) | |
1006 | ||
1007 | AC_TRY_COMPILE([#include <wchar.h> | |
1008 | namespace test { using ::vswscanf; } ], [], | |
1009 | [AC_DEFINE(HAVE_VSWSCANF,1, | |
1010 | [Defined if vswscanf exists.])],[]) | |
1011 | ||
1012 | AC_TRY_COMPILE([#include <wchar.h> | |
1013 | namespace test { using ::vwscanf; } ], [], | |
1014 | [AC_DEFINE(HAVE_VWSCANF,1,[Defined if vwscanf exists.])],[]) | |
1015 | ||
1016 | AC_TRY_COMPILE([#include <wchar.h> | |
1017 | namespace test { using ::wcstof; } ], [], | |
1018 | [AC_DEFINE(HAVE_WCSTOF,1,[Defined if wcstof exists.])],[]) | |
1019 | ||
1020 | AC_TRY_COMPILE([#include <wctype.h>], | |
1021 | [ wint_t t; int i = iswblank(t);], | |
1022 | [AC_DEFINE(HAVE_ISWBLANK,1, | |
1023 | [Defined if iswblank exists.])],[]) | |
1024 | ||
1025 | AC_MSG_CHECKING([for ISO C99 support in <wchar.h>]) | |
1026 | AC_MSG_RESULT($ac_c99_wchar) | |
1027 | fi | |
ff66d28f | 1028 | |
347669a0 | 1029 | # Option parsed, now set things appropriately. |
ff66d28f | 1030 | if test x"$ac_c99_math" = x"no" || |
02a65d23 | 1031 | test x"$ac_c99_complex" = x"no" || |
ff66d28f PE |
1032 | test x"$ac_c99_stdio" = x"no" || |
1033 | test x"$ac_c99_stdlib" = x"no" || | |
1034 | test x"$ac_c99_wchar" = x"no"; then | |
1035 | enable_c99=no; | |
347669a0 | 1036 | else |
4651e622 KC |
1037 | AC_DEFINE(_GLIBCXX_USE_C99, 1, |
1038 | [Define if C99 functions or macros from <wchar.h>, <math.h>, | |
1039 | <complex.h>, <stdio.h>, and <stdlib.h> can be used or exposed.]) | |
ff66d28f PE |
1040 | fi |
1041 | ||
1042 | AC_LANG_RESTORE | |
347669a0 BK |
1043 | fi |
1044 | ||
1045 | AC_MSG_CHECKING([for fully enabled ISO C99 support]) | |
1046 | AC_MSG_RESULT($enable_c99) | |
dcfa0bc8 PE |
1047 | ]) |
1048 | ||
1049 | ||
bd2bb1ea PC |
1050 | dnl |
1051 | dnl Check for ISO/IEC 9899:1999 "C99" support to ISO/IEC DTR 19768 "TR1" | |
1052 | dnl facilities in Chapter 8, "C compatibility". | |
1053 | dnl | |
1054 | AC_DEFUN([GLIBCXX_CHECK_C99_TR1], [ | |
1055 | ||
1056 | AC_LANG_SAVE | |
1057 | AC_LANG_CPLUSPLUS | |
1058 | ||
1059 | # Check for the existence of <complex.h> complex math functions used | |
1060 | # by tr1/complex. | |
1061 | AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no) | |
1062 | ac_c99_complex_tr1=no; | |
1063 | if test x"$ac_has_complex_h" = x"yes"; then | |
1064 | AC_MSG_CHECKING([for ISO C99 support to TR1 in <complex.h>]) | |
1065 | AC_TRY_COMPILE([#include <complex.h>], | |
1066 | [typedef __complex__ float float_type; float_type tmpf; | |
1067 | cacosf(tmpf); | |
1068 | casinf(tmpf); | |
1069 | catanf(tmpf); | |
1070 | cacoshf(tmpf); | |
1071 | casinhf(tmpf); | |
1072 | catanhf(tmpf); | |
1073 | typedef __complex__ double double_type; double_type tmpd; | |
1074 | cacos(tmpd); | |
1075 | casin(tmpd); | |
1076 | catan(tmpd); | |
1077 | cacosh(tmpd); | |
1078 | casinh(tmpd); | |
1079 | catanh(tmpd); | |
1080 | typedef __complex__ long double ld_type; ld_type tmpld; | |
1081 | cacosl(tmpld); | |
1082 | casinl(tmpld); | |
1083 | catanl(tmpld); | |
1084 | cacoshl(tmpld); | |
1085 | casinhl(tmpld); | |
1086 | catanhl(tmpld); | |
1087 | ],[ac_c99_complex_tr1=yes], [ac_c99_complex_tr1=no]) | |
1088 | fi | |
1089 | AC_MSG_RESULT($ac_c99_complex_tr1) | |
1090 | if test x"$ac_c99_complex_tr1" = x"yes"; then | |
1091 | AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX_TR1, 1, | |
1092 | [Define if C99 functions in <complex.h> should be used in | |
1093 | <tr1/complex>. Using compiler builtins for these functions | |
1094 | requires corresponding C99 library functions to be present.]) | |
1095 | fi | |
1096 | ||
1097 | # Check for the existence of <ctype.h> functions. | |
1098 | AC_MSG_CHECKING([for ISO C99 support to TR1 in <ctype.h>]) | |
1099 | AC_CACHE_VAL(ac_c99_ctype_tr1, [ | |
1100 | AC_TRY_COMPILE([#include <ctype.h>], | |
20921e53 | 1101 | [int ch; |
98fb1d29 PC |
1102 | int ret; |
1103 | ret = isblank(ch); | |
bd2bb1ea PC |
1104 | ],[ac_c99_ctype_tr1=yes], [ac_c99_ctype_tr1=no]) |
1105 | ]) | |
1106 | AC_MSG_RESULT($ac_c99_ctype_tr1) | |
1107 | if test x"$ac_c99_ctype_tr1" = x"yes"; then | |
1108 | AC_DEFINE(_GLIBCXX_USE_C99_CTYPE_TR1, 1, | |
1109 | [Define if C99 functions in <ctype.h> should be imported in | |
1110 | <tr1/cctype> in namespace std::tr1.]) | |
1111 | fi | |
1112 | ||
20921e53 PC |
1113 | # Check for the existence of <fenv.h> functions. |
1114 | AC_CHECK_HEADERS(fenv.h, ac_has_fenv_h=yes, ac_has_fenv_h=no) | |
1115 | ac_c99_fenv_tr1=no; | |
1116 | if test x"$ac_has_fenv_h" = x"yes"; then | |
1117 | AC_MSG_CHECKING([for ISO C99 support to TR1 in <fenv.h>]) | |
1118 | AC_TRY_COMPILE([#include <fenv.h>], | |
1119 | [int except, mode; | |
1120 | fexcept_t* pflag; | |
1121 | fenv_t* penv; | |
98fb1d29 PC |
1122 | int ret; |
1123 | ret = feclearexcept(except); | |
1124 | ret = fegetexceptflag(pflag, except); | |
1125 | ret = feraiseexcept(except); | |
1126 | ret = fesetexceptflag(pflag, except); | |
1127 | ret = fetestexcept(except); | |
1128 | ret = fegetround(); | |
1129 | ret = fesetround(mode); | |
1130 | ret = fegetenv(penv); | |
1131 | ret = feholdexcept(penv); | |
1132 | ret = fesetenv(penv); | |
1133 | ret = feupdateenv(penv); | |
20921e53 PC |
1134 | ],[ac_c99_fenv_tr1=yes], [ac_c99_fenv_tr1=no]) |
1135 | fi | |
1136 | AC_MSG_RESULT($ac_c99_fenv_tr1) | |
1137 | if test x"$ac_c99_fenv_tr1" = x"yes"; then | |
1138 | AC_DEFINE(_GLIBCXX_USE_C99_FENV_TR1, 1, | |
1139 | [Define if C99 functions in <fenv.h> should be imported in | |
1140 | <tr1/cfenv> in namespace std::tr1.]) | |
1141 | fi | |
1142 | ||
bd2bb1ea PC |
1143 | AC_LANG_RESTORE |
1144 | ]) | |
1145 | ||
1146 | ||
0214010c | 1147 | dnl |
ff66d28f PE |
1148 | dnl Check for what type of C headers to use. |
1149 | dnl | |
1150 | dnl --enable-cheaders= [does stuff]. | |
1151 | dnl --disable-cheaders [does not do anything, really]. | |
1152 | dnl + Usage: GLIBCXX_ENABLE_CHEADERS[(DEFAULT)] | |
1153 | dnl Where DEFAULT is either `c' or `c_std'. | |
1154 | dnl | |
f214923c | 1155 | AC_DEFUN([GLIBCXX_ENABLE_CHEADERS], [ |
ff66d28f PE |
1156 | GLIBCXX_ENABLE(cheaders,$1,[=KIND], |
1157 | [construct "C" headers for g++], [permit c|c_std]) | |
1158 | AC_MSG_NOTICE("C" header strategy set to $enable_cheaders) | |
1159 | ||
1160 | C_INCLUDE_DIR='${glibcxx_srcdir}/include/'$enable_cheaders | |
1161 | ||
1162 | AC_SUBST(C_INCLUDE_DIR) | |
92eabea2 PE |
1163 | GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C, test $enable_cheaders = c) |
1164 | GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_STD, test $enable_cheaders = c_std) | |
1165 | GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_COMPATIBILITY, test $c_compatibility = yes) | |
ff66d28f PE |
1166 | ]) |
1167 | ||
1168 | ||
0214010c | 1169 | dnl |
ff66d28f PE |
1170 | dnl Check for which locale library to use. The choice is mapped to |
1171 | dnl a subdirectory of config/locale. | |
37bc6ca2 | 1172 | dnl |
ff66d28f | 1173 | dnl Default is generic. |
0214010c | 1174 | dnl |
f214923c | 1175 | AC_DEFUN([GLIBCXX_ENABLE_CLOCALE], [ |
ff66d28f PE |
1176 | AC_MSG_CHECKING([for C locale to use]) |
1177 | GLIBCXX_ENABLE(clocale,auto,[@<:@=MODEL@:>@], | |
1178 | [use MODEL for target locale package], | |
1179 | [permit generic|gnu|ieee_1003.1-2001|yes|no|auto]) | |
1180 | ||
1181 | # If they didn't use this option switch, or if they specified --enable | |
1182 | # with no specific model, we'll have to look for one. If they | |
1183 | # specified --disable (???), do likewise. | |
1184 | if test $enable_clocale = no || test $enable_clocale = yes; then | |
1185 | enable_clocale=auto | |
1186 | fi | |
0214010c | 1187 | |
ff66d28f | 1188 | # Either a known package, or "auto" |
0214010c BK |
1189 | enable_clocale_flag=$enable_clocale |
1190 | ||
ff66d28f PE |
1191 | # Probe for locale support if no specific model is specified. |
1192 | # Default to "generic". | |
1193 | if test $enable_clocale_flag = auto; then | |
7d3998a4 PE |
1194 | case ${target_os} in |
1195 | linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu) | |
ff66d28f | 1196 | AC_EGREP_CPP([_GLIBCXX_ok], [ |
56deb74c | 1197 | #include <features.h> |
37bc6ca2 | 1198 | #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) |
3d7c150e | 1199 | _GLIBCXX_ok |
56deb74c BK |
1200 | #endif |
1201 | ], enable_clocale_flag=gnu, enable_clocale_flag=generic) | |
1451a492 | 1202 | |
ff66d28f | 1203 | # Test for bugs early in glibc-2.2.x series |
7d3998a4 | 1204 | if test $enable_clocale_flag = gnu; then |
ff66d28f PE |
1205 | AC_TRY_RUN([ |
1206 | #define _GNU_SOURCE 1 | |
1207 | #include <locale.h> | |
1208 | #include <string.h> | |
1209 | #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) | |
1210 | extern __typeof(newlocale) __newlocale; | |
1211 | extern __typeof(duplocale) __duplocale; | |
1212 | extern __typeof(strcoll_l) __strcoll_l; | |
1213 | #endif | |
1214 | int main() | |
1215 | { | |
1216 |