1 # Process this file with autoconf to produce a configure script, like so:
2 # aclocal, autoconf, autoheader, automake
9 # For typical GNU versioning info, format is MAJOR.MINOR.MICRO
11 AC_SUBST(release_VERSION)
12 # For libtool versioning info, format is CURRENT:REVISION:AGE
14 AC_SUBST(libtool_VERSION)
16 # Gets build, host, target, *_vendor, *_cpu, *_os, etc.
17 # AC 2.50 sets target_alias iff the user specified --target, but we use it
18 # everywhere, so we set it here just to be sure.
20 target_alias=${target_alias-$target}
21 AC_SUBST(target_alias)
23 AM_INIT_AUTOMAKE($PACKAGE, $release_VERSION)
24 AM_CONFIG_HEADER(config.h)
26 # Runs configure.host and configure.target, as well as finds CC, CXX
27 # and assorted other critical bits. Have to run this before the
28 # GLIBCPP_ENABLE_* macros below.
33 AC_SUBST(enable_shared)
34 AC_SUBST(enable_static)
36 # Check for c++ or library specific bits that don't require linking.
37 #GLIBCPP_CHECK_COMPILER_VERSION
38 GLIBCPP_CHECK_GNU_MAKE
40 # Enable all the variable C++ stuff. C_MBCHAR must come early.
41 GLIBCPP_ENABLE_DEBUG($USE_MAINTAINER_MODE)
43 GLIBCPP_ENABLE_CLOCALE
44 GLIBCPP_ENABLE_C_MBCHAR([yes])
45 GLIBCPP_ENABLE_C99([yes])
46 GLIBCPP_ENABLE_LONG_LONG([yes])
47 GLIBCPP_ENABLE_CHEADERS([c_std])
48 GLIBCPP_ENABLE_THREADS
49 GLIBCPP_ENABLE_CXX_FLAGS([none])
50 GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
51 GLIBCPP_ENABLE_CONCEPT_CHECKS
54 if test -n "$with_cross_host" || test x"$build" != x"$host"; then
56 # This lets us hard-code the functionality we know
57 # we'll have in the cross target environment. "Let" is a
58 # sugar-coated word placed on an especially dull and tedious hack, actually.
59 # Here's why GLIBCPP_CHECK_MATH_SUPPORT, and other autoconf macros
60 # that involve linking can't be used:
61 # "cannot open sim-crt0.o"
62 # "cannot open crt0.o"
63 # etc. All this is because there currently exists no unified,
64 # consistent way for top level CC information to be passed down
65 # to target directories: newlib includes, newlib linking info,
66 # libgloss versus newlib crt0.o, etc. When all of this is done, all
67 # of this hokey, excessive AC_DEFINE junk for crosses can be removed.
69 # We are being configured with some form of cross compiler.
70 GLIBCPP_IS_CROSS_COMPILING=1
72 # If Canadian cross, then don't pick up tools from the build
74 if test -n "$with_cross_host" && test x"$build" != x"$with_cross_host"; then
80 # Construct crosses by hand, eliminating bits that need ld...
81 # GLIBCPP_CHECK_COMPILER_FEATURES
82 # GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
83 # GLIBCPP_CHECK_MATH_SUPPORT
85 case "$target_alias" in
87 # Check for available headers.
88 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
89 machine/endian.h machine/param.h sys/machine.h sys/types.h \
90 fp.h locale.h float.h inttypes.h])
91 SECTION_FLAGS='-ffunction-sections -fdata-sections'
92 AC_SUBST(SECTION_FLAGS)
93 GLIBCPP_CHECK_LINKER_FEATURES
94 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
95 GLIBCPP_CHECK_WCHAR_T_SUPPORT
96 os_include_dir="config/os/gnu-linux"
97 AC_DEFINE(HAVE_COPYSIGN)
98 AC_DEFINE(HAVE_COPYSIGNF)
99 AC_DEFINE(HAVE_FINITEF)
100 AC_DEFINE(HAVE_FREXPF)
101 AC_DEFINE(HAVE_HYPOTF)
102 AC_DEFINE(HAVE_SINCOS)
103 AC_DEFINE(HAVE_SINCOSF)
104 if test x"long_double_math_on_this_cpu" = x"yes"; then
105 AC_DEFINE(HAVE_HYPOTL)
109 # Check for available headers.
110 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
111 machine/endian.h machine/param.h sys/machine.h sys/types.h \
112 fp.h locale.h float.h inttypes.h])
113 SECTION_FLAGS='-ffunction-sections -fdata-sections'
114 AC_SUBST(SECTION_FLAGS)
115 GLIBCPP_CHECK_LINKER_FEATURES
116 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
117 GLIBCPP_CHECK_WCHAR_T_SUPPORT
118 os_include_dir="config/os/hpux"
119 AC_DEFINE(HAVE_COPYSIGN)
120 AC_DEFINE(HAVE_COPYSIGNF)
121 AC_DEFINE(HAVE_FINITEF)
122 AC_DEFINE(HAVE_FREXPF)
123 AC_DEFINE(HAVE_HYPOT)
124 AC_DEFINE(HAVE_SINCOS)
125 AC_DEFINE(HAVE_SINCOSF)
128 # Check for available headers.
129 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
130 machine/endian.h machine/param.h sys/machine.h sys/types.h \
131 fp.h locale.h float.h inttypes.h])
132 SECTION_FLAGS='-ffunction-sections -fdata-sections'
133 AC_SUBST(SECTION_FLAGS)
134 GLIBCPP_CHECK_LINKER_FEATURES
135 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
136 GLIBCPP_CHECK_WCHAR_T_SUPPORT
137 os_include_dir="config/os/bsd/netbsd"
138 AC_DEFINE(HAVE_COPYSIGN)
139 AC_DEFINE(HAVE_COPYSIGNF)
140 AC_DEFINE(HAVE_FINITEF)
141 AC_DEFINE(HAVE_FREXPF)
142 AC_DEFINE(HAVE_HYPOTF)
145 AC_CHECK_HEADERS([sys/types.h locale.h float.h])
146 GLIBCPP_CHECK_LINKER_FEATURES
147 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
148 GLIBCPP_CHECK_WCHAR_T_SUPPORT
149 os_include_dir="config/os/mingw32"
152 os_include_dir="config/os/newlib"
153 AC_DEFINE(HAVE_HYPOT)
157 case "$target_alias" in
161 # GLIBCPP_CHECK_STDLIB_SUPPORT
162 AC_DEFINE(HAVE_STRTOF)
163 AC_DEFINE(HAVE_STRTOLD)
167 AC_DEFINE(HAVE_ACOSF)
168 AC_DEFINE(HAVE_ASINF)
169 AC_DEFINE(HAVE_ATAN2F)
170 AC_DEFINE(HAVE_ATANF)
171 AC_DEFINE(HAVE_CEILF)
172 AC_DEFINE(HAVE_COPYSIGN)
173 AC_DEFINE(HAVE_COPYSIGNF)
175 AC_DEFINE(HAVE_COSHF)
177 AC_DEFINE(HAVE_FABSF)
178 AC_DEFINE(HAVE_FINITE)
179 AC_DEFINE(HAVE_FINITEF)
180 AC_DEFINE(HAVE_FLOORF)
181 AC_DEFINE(HAVE_FMODF)
182 AC_DEFINE(HAVE_FREXPF)
183 AC_DEFINE(HAVE_ISINF)
184 AC_DEFINE(HAVE_ISINFF)
185 AC_DEFINE(HAVE_ISNAN)
186 AC_DEFINE(HAVE_ISNANF)
187 AC_DEFINE(HAVE_LDEXPF)
188 AC_DEFINE(HAVE_LOG10F)
190 AC_DEFINE(HAVE_MODFF)
193 AC_DEFINE(HAVE_SINHF)
194 AC_DEFINE(HAVE_SQRTF)
196 AC_DEFINE(HAVE_TANHF)
200 # At some point, we should differentiate between architectures
201 # like x86, which have long double versions, and alpha/powerpc/etc.,
202 # which don't. For the time being, punt.
203 if test x"long_double_math_on_this_cpu" = x"yes"; then
204 AC_DEFINE(HAVE_ACOSL)
205 AC_DEFINE(HAVE_ASINL)
206 AC_DEFINE(HAVE_ATAN2L)
207 AC_DEFINE(HAVE_ATANL)
208 AC_DEFINE(HAVE_CEILL)
209 AC_DEFINE(HAVE_COPYSIGNL)
211 AC_DEFINE(HAVE_COSHL)
213 AC_DEFINE(HAVE_FABSL)
214 AC_DEFINE(HAVE_FINITEL)
215 AC_DEFINE(HAVE_FLOORL)
216 AC_DEFINE(HAVE_FMODL)
217 AC_DEFINE(HAVE_FREXPL)
218 AC_DEFINE(HAVE_ISINFL)
219 AC_DEFINE(HAVE_ISNANL)
220 AC_DEFINE(HAVE_LDEXPL)
221 AC_DEFINE(HAVE_LOG10L)
223 AC_DEFINE(HAVE_MODFL)
225 AC_DEFINE(HAVE_SINCOSL)
227 AC_DEFINE(HAVE_SINHL)
228 AC_DEFINE(HAVE_SQRTL)
230 AC_DEFINE(HAVE_TANHL)
234 # We are being configured natively. We can do more elaborate tests
235 # that include AC_TRY_COMPILE now, as the linker is assumed to be
237 GLIBCPP_IS_CROSS_COMPILING=0
240 # Check for available headers.
241 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
242 machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h])
244 GLIBCPP_CHECK_COMPILER_FEATURES
245 GLIBCPP_CHECK_LINKER_FEATURES
246 GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
247 GLIBCPP_CHECK_MATH_SUPPORT
248 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
249 GLIBCPP_CHECK_WCHAR_T_SUPPORT
250 GLIBCPP_CHECK_STDLIB_SUPPORT
255 ], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);],
256 [AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ])
261 # Establish limits on memory usage during 'make check'
262 GLIBCPP_CONFIGURE_TESTSUITE
265 # This depends on the possibly-skipped linker test above.
266 GLIBCPP_ENABLE_SYMVERS([yes])
268 # Propagate the target-specific source directories through the build chain.
269 OS_INC_SRCDIR=$os_include_dir/bits
270 ATOMICITY_INC_SRCDIR=$ATOMICITYH/bits
271 CPU_LIMITS_INC_SRCDIR=$CPULIMITSH/bits
272 AC_SUBST(OS_INC_SRCDIR)
273 AC_SUBST(ATOMICITY_INC_SRCDIR)
274 AC_SUBST(CPU_LIMITS_INC_SRCDIR)
276 # Set up cross-compile flags
277 AC_SUBST(GLIBCPP_IS_CROSS_COMPILING)
278 AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
282 if test "${multilib}" = "yes"; then
283 multilib_arg="--enable-multilib"
288 # Needed so that g++ can find the correct include subdir automatically.
291 # Export all the install information
292 GLIBCPP_EXPORT_INSTALL_INFO
294 # Export all the include and flag information to makefiles.
295 GLIBCPP_EXPORT_INCLUDES
298 if ${CONFIG_SHELL-/bin/sh} ./libtool --tag CXX --features |
299 grep "enable shared" > /dev/null; then
300 LIBSUPCXX_PICFLAGS=-prefer-pic
304 AC_SUBST(LIBSUPCXX_PICFLAGS)
306 # Generate the various Makefiles, include files, and scripts.
307 # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am
308 # and libsupc++/Makefile.am so that multilib installs will end up
309 # installed in the correct place. To work around this not being passed
310 # down from config-ml.in -> top_srcdir/Makefile.am ->
311 # top_srcdir/{src,libsupc++}/Makefile.am, manually append it here.
313 include/Makefile src/Makefile \
314 libmath/Makefile libio/Makefile libsupc++/Makefile \
315 po/Makefile testsuite/Makefile mkcheck testsuite_flags,
316 [if test -n "$CONFIG_FILES"; then
317 ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
318 grep '^MULTISUBDIR =' Makefile >> src/Makefile
319 grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile
322 chmod +x testsuite_flags
327 with_multisubdir=${with_multisubdir}
328 ac_configure_args="${multilib_arg} ${ac_configure_args}"
329 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
330 glibcpp_basedir=${glibcpp_basedir}
336 # Sanity checking & User-visible messages.
337 # Checks down here, otherwise they get scrolled off before
338 # the user will notice.
340 # Trying to get more people to read documentation. Possibly remove
341 # check and warn all the time. There is no "informational" AC_MSG_
342 # macro, so these are going to be printed even when --quiet/--silent
344 if test ! -f stamp-sanity-warned; then
345 touch stamp-sanity-warned
347 echo "Please make certain that you read the installation information here:"
348 echo " faster => ${srcdir}/docs/install.html"
349 echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/install.html>"
351 echo "and the configuration information here:"
352 echo " faster => ${srcdir}/docs/configopts.html"
353 echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/configopts.html>"
355 echo "before proceeding with ${_cv_gnu_make_command}."