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Commit | Line | Data |
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b2dad0e3 | 1 | # Process this file with autoconf to produce a configure script, like so: |
d2caef2e | 2 | # aclocal && autoconf && autoheader && automake |
b2dad0e3 | 3 | |
ff66d28f | 4 | AC_PREREQ(2.57) |
fbe057bb | 5 | AC_INIT(package-unused, version-unused,, libstdc++) |
ff66d28f PE |
6 | AC_CONFIG_SRCDIR(src/ios.cc) |
7 | AC_CONFIG_HEADER(config.h) | |
e2c20fae | 8 | |
6706f116 AO |
9 | # This works around the fact that libtool configuration may change LD |
10 | # for this particular configuration, but some shells, instead of | |
11 | # keeping the changes in LD private, export them just because LD is | |
2c839a4e | 12 | # exported. Only used at the end of this file. |
ff66d28f | 13 | ### am handles this now? ORIGINAL_LD_FOR_MULTILIBS=$LD |
6706f116 | 14 | |
4e10943d | 15 | # For libtool versioning info, format is CURRENT:REVISION:AGE |
8099b2ae | 16 | libtool_VERSION=6:0:0 |
4e10943d | 17 | AC_SUBST(libtool_VERSION) |
b2dad0e3 | 18 | |
ff66d28f | 19 | # Find the rest of the source tree framework. |
3d7c150e | 20 | GLIBCXX_TOPREL_CONFIGURE |
aebb8c22 | 21 | |
58b08ac3 | 22 | # Gets build, host, target, *_vendor, *_cpu, *_os, etc. |
2c839a4e PE |
23 | # |
24 | # You will slowly go insane if you do not grok the following fact: when | |
25 | # building v3 as part of the compiler, the top-level /target/ becomes the | |
ff66d28f | 26 | # library's /host/. configure then causes --target to default to --host, |
2c839a4e PE |
27 | # exactly like any other package using autoconf. Therefore, 'target' and |
28 | # 'host' will always be the same. This makes sense both for native and | |
29 | # cross compilers, just think about it for a little while. :-) | |
30 | # | |
31 | # Also, if v3 is being configured as part of a cross compiler, the top-level | |
32 | # configure script will pass the "real" host as $with_cross_host. | |
33 | # | |
ff66d28f PE |
34 | # Do not delete or change the following two lines. For why, see |
35 | # http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html | |
b2dad0e3 | 36 | AC_CANONICAL_SYSTEM |
ff66d28f PE |
37 | target_alias=${target_alias-$host_alias} |
38 | ||
39 | # Handy for debugging: | |
40 | #AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5 | |
41 | ||
0df3f383 PE |
42 | if test "$build" != "$host"; then |
43 | # We are being configured with some form of cross compiler. | |
44 | GLIBCXX_IS_NATIVE=false | |
72730fdb | 45 | GCC_NO_EXECUTABLES |
0df3f383 PE |
46 | else |
47 | GLIBCXX_IS_NATIVE=true | |
48 | fi | |
49 | ||
ff66d28f PE |
50 | # Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the |
51 | # following is magically included in AUTOMAKE_OPTIONS in each Makefile.am. | |
52 | # 1.x: minimum required version | |
53 | # no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch | |
54 | # of other PACKAGE_* variables will, however, and there's nothing | |
fbe057bb | 55 | # we can do about that; they come from AC_INIT). |
ff66d28f PE |
56 | # foreign: we don't follow the normal rules for GNU packages (no COPYING |
57 | # file in the top srcdir, etc, etc), so stop complaining. | |
58 | # no-dependencies: turns off auto dependency generation (just for now) | |
2d52e9e3 PE |
59 | # -Wall: turns on all automake warnings... |
60 | # -Wno-portability: ...except this one, since GNU make is now required. | |
ec2075e9 | 61 | AM_INIT_AUTOMAKE([1.7.6 no-define foreign no-dependencies -Wall -Wno-portability -Wno-override]) |
ff66d28f | 62 | |
ff66d28f PE |
63 | # Runs configure.host, finds CC, CXX, and assorted other critical bits. Sets |
64 | # up critical shell variables. | |
65 | GLIBCXX_CONFIGURE | |
66 | ||
67 | #AC_MSG_NOTICE([====== Starting libtool configuration]) | |
b2dad0e3 | 68 | AC_LIBTOOL_DLOPEN |
5780a46b | 69 | AM_PROG_LIBTOOL |
34791641 PE |
70 | AC_SUBST(enable_shared) |
71 | AC_SUBST(enable_static) | |
ff66d28f | 72 | #AC_MSG_NOTICE([====== Finished libtool configuration]) ; sleep 10 |
04e78786 | 73 | |
92eabea2 PE |
74 | # Possibly disable most of the library. |
75 | ## XXX Consider skipping unncessary tests altogether in this case, rather | |
76 | ## than just ignoring the results. Faster /and/ more correct, win win. | |
77 | GLIBCXX_ENABLE_HOSTED | |
78 | ||
44f0760e | 79 | # Check for support bits and g++ features that don't require linking. |
3d7c150e | 80 | GLIBCXX_ENABLE_SJLJ_EXCEPTIONS |
92eabea2 | 81 | GLIBCXX_ENABLE_PCH($is_hosted) |
b2dad0e3 | 82 | |
44f0760e BK |
83 | # Enable all the variable C++ runtime options. |
84 | # NB: C_MBCHAR must come early. | |
3d7c150e BK |
85 | GLIBCXX_ENABLE_CSTDIO |
86 | GLIBCXX_ENABLE_CLOCALE | |
ff66d28f | 87 | GLIBCXX_ENABLE_CHEADERS($c_model) dnl c_model from configure.host |
3d7c150e BK |
88 | GLIBCXX_ENABLE_C_MBCHAR([yes]) |
89 | GLIBCXX_ENABLE_C99([yes]) | |
90 | GLIBCXX_ENABLE_LONG_LONG([yes]) | |
91 | GLIBCXX_ENABLE_THREADS | |
ff66d28f PE |
92 | GLIBCXX_ENABLE_CONCEPT_CHECKS([no]) |
93 | GLIBCXX_ENABLE_DEBUG_FLAGS(["-g3 -O0"]) | |
3d7c150e | 94 | GLIBCXX_ENABLE_DEBUG([no]) |
ff66d28f | 95 | GLIBCXX_ENABLE_CXX_FLAGS |
b2dad0e3 | 96 | |
974e336b | 97 | # No surprises, no surprises... |
2c5d0ae8 | 98 | if test $atomicity_dir = cpu/generic ; then |
9e57d5ca | 99 | AC_MSG_WARN([No native atomic operations are provided for this platform.]) |
974e336b PE |
100 | if test $target_thread_file = single; then |
101 | AC_MSG_WARN([They cannot be faked when thread support is disabled.]) | |
102 | AC_MSG_WARN([Thread-safety of certain classes is not guaranteed.]) | |
103 | else | |
104 | AC_MSG_WARN([They will be faked using a mutex.]) | |
105 | AC_MSG_WARN([Performance of certain classes will degrade as a result.]) | |
106 | fi | |
107 | fi | |
108 | ||
109 | ||
0df3f383 | 110 | if $GLIBCXX_IS_NATIVE; then |
b2dad0e3 | 111 | |
0df3f383 PE |
112 | # We can do more elaborate tests that assume a working linker. |
113 | CANADIAN=no | |
114 | ||
115 | # Check for available headers. | |
116 | AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \ | |
117 | machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h \ | |
118 | sys/types.h]) | |
119 | ||
120 | GLIBCXX_CHECK_COMPILER_FEATURES | |
121 | GLIBCXX_CHECK_LINKER_FEATURES | |
122 | GLIBCXX_CHECK_MATH_SUPPORT | |
123 | GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT | |
124 | GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT | |
125 | GLIBCXX_CHECK_WCHAR_T_SUPPORT | |
126 | GLIBCXX_CHECK_STDLIB_SUPPORT | |
127 | ||
128 | # For showmanyc_helper(). | |
129 | AC_CHECK_HEADERS(sys/ioctl.h sys/filio.h) | |
130 | GLIBCXX_CHECK_POLL | |
131 | GLIBCXX_CHECK_S_ISREG_OR_S_IFREG | |
132 | ||
133 | # For xsputn_2(). | |
134 | AC_CHECK_HEADERS(sys/uio.h) | |
135 | GLIBCXX_CHECK_WRITEV | |
136 | ||
3d05b345 PC |
137 | # For the __streamoff_base_type typedef. |
138 | GLIBCXX_CHECK_INT64_T | |
139 | ||
140 | # For LFS support. | |
141 | GLIBCXX_CHECK_LFS | |
142 | ||
0df3f383 PE |
143 | AC_LC_MESSAGES |
144 | ||
145 | AC_TRY_COMPILE( | |
146 | [#include <setjmp.h>], | |
147 | [sigjmp_buf env; | |
148 | while (! sigsetjmp (env, 1)) | |
149 | siglongjmp (env, 1); | |
150 | ], | |
151 | [AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available.])]) | |
152 | ||
153 | AC_FUNC_MMAP | |
154 | ||
155 | else | |
eebc608e | 156 | |
2c839a4e PE |
157 | # This lets us hard-code the functionality we know we'll have in the cross |
158 | # target environment. "Let" is a sugar-coated word placed on an especially | |
159 | # dull and tedious hack, actually. | |
160 | # | |
3d7c150e | 161 | # Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros |
2c839a4e PE |
162 | # that involve linking, can't be used: |
163 | # "cannot open sim-crt0.o" | |
164 | # "cannot open crt0.o" | |
165 | # etc. All this is because there currently exists no unified, consistent | |
166 | # way for top level CC information to be passed down to target directories: | |
167 | # newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc. | |
168 | # When all of that is done, all of this hokey, excessive AC_DEFINE junk for | |
169 | # crosses can be removed. | |
170 | ||
171 | # If Canadian cross, then don't pick up tools from the build directory. | |
0df3f383 | 172 | # Used only in GLIBCXX_EXPORT_INCLUDES. |
ff66d28f | 173 | if test -n "$with_cross_host" && |
f5cf58dd | 174 | test x"$build_alias" != x"$with_cross_host" && |
ff66d28f PE |
175 | test x"$build" != x"$target"; |
176 | then | |
b2dad0e3 | 177 | CANADIAN=yes |
b2dad0e3 BK |
178 | else |
179 | CANADIAN=no | |
b2dad0e3 BK |
180 | fi |
181 | ||
75940b88 | 182 | # Construct crosses by hand, eliminating bits that need ld... |
3d7c150e BK |
183 | # GLIBCXX_CHECK_COMPILER_FEATURES |
184 | # GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT | |
185 | # GLIBCXX_CHECK_MATH_SUPPORT | |
75940b88 | 186 | |
ff66d28f PE |
187 | # First, test for "known" system libraries. We may be using newlib even |
188 | # on a hosted environment. | |
189 | if test "x${with_newlib}" = "xyes"; then | |
190 | os_include_dir="os/newlib" | |
191 | AC_DEFINE(HAVE_HYPOT) | |
192 | ||
193 | # GLIBCXX_CHECK_STDLIB_SUPPORT | |
194 | AC_DEFINE(HAVE_STRTOF) | |
195 | AC_DEFINE(HAVE_STRTOLD) | |
196 | # AC_FUNC_MMAP | |
197 | AC_DEFINE(HAVE_MMAP) | |
198 | ||
199 | AC_DEFINE(HAVE_ACOSF) | |
200 | AC_DEFINE(HAVE_ASINF) | |
201 | AC_DEFINE(HAVE_ATAN2F) | |
202 | AC_DEFINE(HAVE_ATANF) | |
203 | AC_DEFINE(HAVE_CEILF) | |
204 | AC_DEFINE(HAVE_COPYSIGN) | |
205 | AC_DEFINE(HAVE_COPYSIGNF) | |
206 | AC_DEFINE(HAVE_COSF) | |
207 | AC_DEFINE(HAVE_COSHF) | |
208 | AC_DEFINE(HAVE_EXPF) | |
209 | AC_DEFINE(HAVE_FABSF) | |
210 | AC_DEFINE(HAVE_FLOORF) | |
211 | AC_DEFINE(HAVE_FMODF) | |
212 | AC_DEFINE(HAVE_FREXPF) | |
213 | AC_DEFINE(HAVE_LDEXPF) | |
214 | AC_DEFINE(HAVE_LOG10F) | |
215 | AC_DEFINE(HAVE_LOGF) | |
216 | AC_DEFINE(HAVE_MODFF) | |
217 | AC_DEFINE(HAVE_POWF) | |
218 | AC_DEFINE(HAVE_SINF) | |
219 | AC_DEFINE(HAVE_SINHF) | |
220 | AC_DEFINE(HAVE_SQRTF) | |
221 | AC_DEFINE(HAVE_TANF) | |
222 | AC_DEFINE(HAVE_TANHF) | |
517da0ce MM |
223 | |
224 | AC_DEFINE(HAVE_S_ISREG) | |
225 | AC_DEFINE(HAVE_S_IFREG) | |
ff66d28f PE |
226 | else |
227 | m4_include([crossconfig.m4]) | |
228 | fi | |
75940b88 SE |
229 | |
230 | # At some point, we should differentiate between architectures | |
231 | # like x86, which have long double versions, and alpha/powerpc/etc., | |
232 | # which don't. For the time being, punt. | |
233 | if test x"long_double_math_on_this_cpu" = x"yes"; then | |
234 | AC_DEFINE(HAVE_ACOSL) | |
235 | AC_DEFINE(HAVE_ASINL) | |
236 | AC_DEFINE(HAVE_ATAN2L) | |
237 | AC_DEFINE(HAVE_ATANL) | |
238 | AC_DEFINE(HAVE_CEILL) | |
239 | AC_DEFINE(HAVE_COPYSIGNL) | |
240 | AC_DEFINE(HAVE_COSL) | |
241 | AC_DEFINE(HAVE_COSHL) | |
242 | AC_DEFINE(HAVE_EXPL) | |
243 | AC_DEFINE(HAVE_FABSL) | |
75940b88 SE |
244 | AC_DEFINE(HAVE_FLOORL) |
245 | AC_DEFINE(HAVE_FMODL) | |
246 | AC_DEFINE(HAVE_FREXPL) | |
75940b88 SE |
247 | AC_DEFINE(HAVE_LDEXPL) |
248 | AC_DEFINE(HAVE_LOG10L) | |
249 | AC_DEFINE(HAVE_LOGL) | |
250 | AC_DEFINE(HAVE_MODFL) | |
251 | AC_DEFINE(HAVE_POWL) | |
252 | AC_DEFINE(HAVE_SINCOSL) | |
253 | AC_DEFINE(HAVE_SINL) | |
254 | AC_DEFINE(HAVE_SINHL) | |
255 | AC_DEFINE(HAVE_SQRTL) | |
256 | AC_DEFINE(HAVE_TANL) | |
257 | AC_DEFINE(HAVE_TANHL) | |
258 | fi | |
2c839a4e | 259 | |
b2dad0e3 BK |
260 | fi |
261 | ||
ff66d28f | 262 | # This depends on GLIBCXX CHECK_LINKER_FEATURES, but without it assumes no. |
3d7c150e | 263 | GLIBCXX_ENABLE_SYMVERS([yes]) |
fe413112 | 264 | |
ff66d28f | 265 | # This depends on GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE. |
3d7c150e | 266 | GLIBCXX_CONFIGURE_TESTSUITE |
c4c064e7 | 267 | |
4a9d5109 | 268 | # Propagate the target-specific source directories through the build chain. |
ff66d28f | 269 | # (Nothing currently uses cpu_include_dir directly; only atomicity_include_dir |
974e336b | 270 | # uses it, and it only gets used in this file.) |
2c5d0ae8 BK |
271 | ATOMICITY_SRCDIR=config/${atomicity_dir} |
272 | ATOMIC_WORD_SRCDIR=config/${atomic_word_dir} | |
cc5112c9 | 273 | OS_INC_SRCDIR=config/${os_include_dir} |
2c5d0ae8 BK |
274 | AC_SUBST(ATOMICITY_SRCDIR) |
275 | AC_SUBST(ATOMIC_WORD_SRCDIR) | |
cc5112c9 BK |
276 | AC_SUBST(OS_INC_SRCDIR) |
277 | ||
ff66d28f PE |
278 | # Determine cross-compile flags and AM_CONDITIONALs. |
279 | #AC_SUBST(GLIBCXX_IS_NATIVE) | |
0df3f383 | 280 | #AM_CONDITIONAL(CANADIAN, test $CANADIAN = yes) |
ff66d28f | 281 | # from GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT: |
0df3f383 | 282 | #AM_CONDITIONAL(GLIBCXX_BUILD_LIBMATH, test $need_libmath = yes) |
92eabea2 | 283 | GLIBCXX_EVALUATE_CONDITIONALS |
c4d3f801 | 284 | |
5e53dba6 | 285 | AC_CACHE_SAVE |
b2dad0e3 | 286 | |
ff66d28f | 287 | if test ${multilib} = yes; then |
b2dad0e3 BK |
288 | multilib_arg="--enable-multilib" |
289 | else | |
290 | multilib_arg= | |
291 | fi | |
292 | ||
0df3f383 | 293 | # Export all the install information. |
3d7c150e | 294 | GLIBCXX_EXPORT_INSTALL_INFO |
1fd2f510 | 295 | |
6aa43d99 | 296 | # Export all the include and flag information to Makefiles. |
3d7c150e BK |
297 | GLIBCXX_EXPORT_INCLUDES |
298 | GLIBCXX_EXPORT_FLAGS | |
e466dc8a | 299 | |
f8e4b51d | 300 | if ${CONFIG_SHELL-/bin/sh} ./libtool --tag CXX --features | |
ff66d28f PE |
301 | grep "enable shared" > /dev/null; |
302 | then | |
f8e4b51d AO |
303 | LIBSUPCXX_PICFLAGS=-prefer-pic |
304 | else | |
305 | LIBSUPCXX_PICFLAGS= | |
306 | fi | |
307 | AC_SUBST(LIBSUPCXX_PICFLAGS) | |
308 | ||
ff66d28f PE |
309 | dnl In autoconf 2.5x, AC_OUTPUT is replaced by four AC_CONFIG_* macros, |
310 | dnl which can all be called multiple times as needed, plus one (different) | |
65fc9769 | 311 | dnl AC_OUTPUT macro. This one lists the files to be created: |
82ba99d5 | 312 | AC_CONFIG_FILES( \ |
ff66d28f | 313 | Makefile \ |
82ba99d5 PE |
314 | AC_FOREACH([DIR], glibcxx_SUBDIRS, [DIR/Makefile ]) |
315 | ) | |
ff66d28f PE |
316 | AC_CONFIG_FILES([scripts/check_survey],[chmod +x scripts/check_survey]) |
317 | AC_CONFIG_FILES([scripts/testsuite_flags],[chmod +x scripts/testsuite_flags]) | |
318 | ||
319 | dnl These commands are run at the end of config.status: | |
320 | AC_CONFIG_COMMANDS([default], | |
321 | [if test -n "$CONFIG_FILES"; then | |
322 | # Multilibs need MULTISUBDIR defined correctly in certain makefiles so | |
323 | # that multilib installs will end up installed in the correct place. | |
324 | # The testsuite needs it for multilib-aware ABI baseline files. | |
325 | # To work around this not being passed down from config-ml.in -> | |
326 | # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually | |
327 | # append it here. Only modify Makefiles that have just been created. | |
0df3f383 PE |
328 | # |
329 | # Also, get rid of this simulated-VPATH thing that automake does. | |
330 | cat > vpsed << \_EOF | |
331 | s!`test -f '$<' || echo '$(srcdir)/'`!! | |
332 | _EOF | |
82ba99d5 | 333 | for i in $SUBDIRS; do |
ff66d28f PE |
334 | case $CONFIG_FILES in |
335 | *${i}/Makefile*) | |
336 | #echo "Adding MULTISUBDIR to $i/Makefile" | |
0df3f383 PE |
337 | sed -f vpsed $i/Makefile > tmp |
338 | grep '^MULTISUBDIR =' Makefile >> tmp | |
339 | mv tmp $i/Makefile | |
ff66d28f PE |
340 | ;; |
341 | esac | |
342 | done | |
0df3f383 | 343 | rm vpsed |
38a9323a | 344 | fi |
ff66d28f PE |
345 | (cd include && ${MAKE-make}) |
346 | ], | |
347 | [ | |
82ba99d5 PE |
348 | # Variables needed in config.status (file generation) which aren't already |
349 | # passed by autoconf. | |
350 | SUBDIRS="$SUBDIRS" | |
ff66d28f PE |
351 | ]) |
352 | ||
353 | dnl And this actually makes things happen: | |
354 | AC_OUTPUT |