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 2.5x sets target_alias iff the user specified --target, but we use it
18 # everywhere, so we set it here just to be sure. In AC 2.13
19 # AC_CANONICAL_TARGET was known as AC_CANONICAL_SYSTEM.
21 target_alias=${target_alias-$target}
22 AC_SUBST(target_alias)
24 AM_INIT_AUTOMAKE($PACKAGE, $release_VERSION)
25 AM_CONFIG_HEADER(config.h)
27 # Runs configure.host and configure.target, as well as finds CC, CXX
28 # and assorted other critical bits. Have to run this before the
29 # GLIBCPP_ENABLE_* macros below.
34 AC_SUBST(enable_shared)
35 AC_SUBST(enable_static)
37 # Check for c++ or library specific bits that don't require linking.
38 #GLIBCPP_CHECK_COMPILER_VERSION
39 GLIBCPP_CHECK_GNU_MAKE
41 # Enable all the variable C++ stuff. C_MBCHAR must come early.
42 GLIBCPP_ENABLE_DEBUG($USE_MAINTAINER_MODE)
44 GLIBCPP_ENABLE_CLOCALE
45 GLIBCPP_ENABLE_C_MBCHAR([yes])
46 GLIBCPP_ENABLE_C99([yes])
47 GLIBCPP_ENABLE_LONG_LONG([yes])
48 GLIBCPP_ENABLE_CHEADERS([c_std])
49 GLIBCPP_ENABLE_THREADS
50 GLIBCPP_ENABLE_CXX_FLAGS([none])
51 GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
52 GLIBCPP_ENABLE_CONCEPT_CHECKS
55 if test -n "$with_cross_host" || test x"$build" != x"$host"; then
57 # This lets us hard-code the functionality we know
58 # we'll have in the cross target environment. "Let" is a
59 # sugar-coated word placed on an especially dull and tedious hack, actually.
60 # Here's why GLIBCPP_CHECK_MATH_SUPPORT, and other autoconf macros
61 # that involve linking can't be used:
62 # "cannot open sim-crt0.o"
63 # "cannot open crt0.o"
64 # etc. All this is because there currently exists no unified,
65 # consistent way for top level CC information to be passed down
66 # to target directories: newlib includes, newlib linking info,
67 # libgloss versus newlib crt0.o, etc. When all of this is done, all
68 # of this hokey, excessive AC_DEFINE junk for crosses can be removed.
70 # We are being configured with some form of cross compiler.
71 GLIBCPP_IS_CROSS_COMPILING=1
73 # If Canadian cross, then don't pick up tools from the build
75 if test -n "$with_cross_host" && test x"$build" != x"$with_cross_host"; then
81 # Construct crosses by hand, eliminating bits that need ld...
82 # GLIBCPP_CHECK_COMPILER_FEATURES
83 # GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
84 # GLIBCPP_CHECK_MATH_SUPPORT
86 case "$target_alias" in
88 # Check for available headers.
89 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
90 machine/endian.h machine/param.h sys/machine.h sys/types.h \
91 fp.h locale.h float.h inttypes.h])
92 SECTION_FLAGS='-ffunction-sections -fdata-sections'
93 AC_SUBST(SECTION_FLAGS)
94 GLIBCPP_CHECK_LINKER_FEATURES
95 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
96 GLIBCPP_CHECK_WCHAR_T_SUPPORT
97 os_include_dir="config/os/gnu-linux"
98 AC_DEFINE(HAVE_COPYSIGN)
99 AC_DEFINE(HAVE_COPYSIGNF)
100 AC_DEFINE(HAVE_FINITEF)
101 AC_DEFINE(HAVE_FREXPF)
102 AC_DEFINE(HAVE_HYPOTF)
103 AC_DEFINE(HAVE_SINCOS)
104 AC_DEFINE(HAVE_SINCOSF)
105 if test x"long_double_math_on_this_cpu" = x"yes"; then
106 AC_DEFINE(HAVE_HYPOTL)
110 # Check for available headers.
111 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
112 machine/endian.h machine/param.h sys/machine.h sys/types.h \
113 fp.h locale.h float.h inttypes.h])
114 SECTION_FLAGS='-ffunction-sections -fdata-sections'
115 AC_SUBST(SECTION_FLAGS)
116 GLIBCPP_CHECK_LINKER_FEATURES
117 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
118 GLIBCPP_CHECK_WCHAR_T_SUPPORT
119 os_include_dir="config/os/hpux"
120 AC_DEFINE(HAVE_COPYSIGN)
121 AC_DEFINE(HAVE_COPYSIGNF)
122 AC_DEFINE(HAVE_FINITEF)
123 AC_DEFINE(HAVE_FREXPF)
124 AC_DEFINE(HAVE_HYPOT)
125 AC_DEFINE(HAVE_SINCOS)
126 AC_DEFINE(HAVE_SINCOSF)
129 # Check for available headers.
130 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
131 machine/endian.h machine/param.h sys/machine.h sys/types.h \
132 fp.h locale.h float.h inttypes.h])
133 SECTION_FLAGS='-ffunction-sections -fdata-sections'
134 AC_SUBST(SECTION_FLAGS)
135 GLIBCPP_CHECK_LINKER_FEATURES
136 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
137 GLIBCPP_CHECK_WCHAR_T_SUPPORT
138 os_include_dir="config/os/bsd/netbsd"
139 AC_DEFINE(HAVE_COPYSIGN)
140 AC_DEFINE(HAVE_COPYSIGNF)
141 AC_DEFINE(HAVE_FINITEF)
142 AC_DEFINE(HAVE_FREXPF)
143 AC_DEFINE(HAVE_HYPOTF)
146 AC_CHECK_HEADERS([sys/types.h locale.h float.h])
147 GLIBCPP_CHECK_LINKER_FEATURES
148 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
149 GLIBCPP_CHECK_WCHAR_T_SUPPORT
150 os_include_dir="config/os/mingw32"
153 os_include_dir="config/os/newlib"
154 AC_DEFINE(HAVE_HYPOT)
158 case "$target_alias" in
162 # GLIBCPP_CHECK_STDLIB_SUPPORT
163 AC_DEFINE(HAVE_STRTOF)
164 AC_DEFINE(HAVE_STRTOLD)
168 AC_DEFINE(HAVE_ACOSF)
169 AC_DEFINE(HAVE_ASINF)
170 AC_DEFINE(HAVE_ATAN2F)
171 AC_DEFINE(HAVE_ATANF)
172 AC_DEFINE(HAVE_CEILF)
173 AC_DEFINE(HAVE_COPYSIGN)
174 AC_DEFINE(HAVE_COPYSIGNF)
176 AC_DEFINE(HAVE_COSHF)
178 AC_DEFINE(HAVE_FABSF)
179 AC_DEFINE(HAVE_FINITE)
180 AC_DEFINE(HAVE_FINITEF)
181 AC_DEFINE(HAVE_FLOORF)
182 AC_DEFINE(HAVE_FMODF)
183 AC_DEFINE(HAVE_FREXPF)
184 AC_DEFINE(HAVE_ISINF)
185 AC_DEFINE(HAVE_ISINFF)
186 AC_DEFINE(HAVE_ISNAN)
187 AC_DEFINE(HAVE_ISNANF)
188 AC_DEFINE(HAVE_LDEXPF)
189 AC_DEFINE(HAVE_LOG10F)
191 AC_DEFINE(HAVE_MODFF)
194 AC_DEFINE(HAVE_SINHF)
195 AC_DEFINE(HAVE_SQRTF)
197 AC_DEFINE(HAVE_TANHF)
201 # At some point, we should differentiate between architectures
202 # like x86, which have long double versions, and alpha/powerpc/etc.,
203 # which don't. For the time being, punt.
204 if test x"long_double_math_on_this_cpu" = x"yes"; then
205 AC_DEFINE(HAVE_ACOSL)
206 AC_DEFINE(HAVE_ASINL)
207 AC_DEFINE(HAVE_ATAN2L)
208 AC_DEFINE(HAVE_ATANL)
209 AC_DEFINE(HAVE_CEILL)
210 AC_DEFINE(HAVE_COPYSIGNL)
212 AC_DEFINE(HAVE_COSHL)
214 AC_DEFINE(HAVE_FABSL)
215 AC_DEFINE(HAVE_FINITEL)
216 AC_DEFINE(HAVE_FLOORL)
217 AC_DEFINE(HAVE_FMODL)
218 AC_DEFINE(HAVE_FREXPL)
219 AC_DEFINE(HAVE_ISINFL)
220 AC_DEFINE(HAVE_ISNANL)
221 AC_DEFINE(HAVE_LDEXPL)
222 AC_DEFINE(HAVE_LOG10L)
224 AC_DEFINE(HAVE_MODFL)
226 AC_DEFINE(HAVE_SINCOSL)
228 AC_DEFINE(HAVE_SINHL)
229 AC_DEFINE(HAVE_SQRTL)
231 AC_DEFINE(HAVE_TANHL)
235 # We are being configured natively. We can do more elaborate tests
236 # that include AC_TRY_COMPILE now, as the linker is assumed to be
238 GLIBCPP_IS_CROSS_COMPILING=0
241 # Check for available headers.
242 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
243 machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h])
245 GLIBCPP_CHECK_COMPILER_FEATURES
246 GLIBCPP_CHECK_LINKER_FEATURES
247 GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
248 GLIBCPP_CHECK_MATH_SUPPORT
249 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
250 GLIBCPP_CHECK_WCHAR_T_SUPPORT
251 GLIBCPP_CHECK_STDLIB_SUPPORT
256 ], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);],
257 [AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ])
262 # Establish limits on memory usage during 'make check'
263 GLIBCPP_CONFIGURE_TESTSUITE
266 # This depends on the possibly-skipped linker test above.
267 GLIBCPP_ENABLE_SYMVERS([yes])
269 # Propagate the target-specific source directories through the build chain.
270 OS_INC_SRCDIR=$os_include_dir/bits
271 ATOMICITY_INC_SRCDIR=$ATOMICITYH/bits
272 CPU_LIMITS_INC_SRCDIR=$CPULIMITSH/bits
273 AC_SUBST(OS_INC_SRCDIR)
274 AC_SUBST(ATOMICITY_INC_SRCDIR)
275 AC_SUBST(CPU_LIMITS_INC_SRCDIR)
277 # Set up cross-compile flags
278 AC_SUBST(GLIBCPP_IS_CROSS_COMPILING)
279 AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
283 if test "${multilib}" = "yes"; then
284 multilib_arg="--enable-multilib"
289 # Needed so that g++ can find the correct include subdir automatically.
292 # Export all the install information
293 GLIBCPP_EXPORT_INSTALL_INFO
295 # Export all the include and flag information to makefiles.
296 GLIBCPP_EXPORT_INCLUDES
299 if ${CONFIG_SHELL-/bin/sh} ./libtool --tag CXX --features |
300 grep "enable shared" > /dev/null; then
301 LIBSUPCXX_PICFLAGS=-prefer-pic
305 AC_SUBST(LIBSUPCXX_PICFLAGS)
307 # Generate the various Makefiles, include files, and scripts.
308 # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am
309 # and libsupc++/Makefile.am so that multilib installs will end up
310 # installed in the correct place. To work around this not being passed
311 # down from config-ml.in -> top_srcdir/Makefile.am ->
312 # top_srcdir/{src,libsupc++}/Makefile.am, manually append it here.
314 include/Makefile src/Makefile \
315 libmath/Makefile libio/Makefile libsupc++/Makefile \
316 po/Makefile testsuite/Makefile mkcheck testsuite_flags,
317 [if test -n "$CONFIG_FILES"; then
318 ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
319 grep '^MULTISUBDIR =' Makefile >> src/Makefile
320 grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile
323 chmod +x testsuite_flags
328 with_multisubdir=${with_multisubdir}
329 ac_configure_args="${multilib_arg} ${ac_configure_args}"
330 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
331 glibcpp_basedir=${glibcpp_basedir}
335 dnl In autoconf 2.5x, AC_OUTPUT is replaced by three AC_ macros:
336 dnl AC_CONFIG_FILES(Makefile \
337 dnl include/Makefile src/Makefile \
338 dnl libmath/Makefile libio/Makefile libsupc++/Makefile \
339 dnl po/Makefile testsuite/Makefile mkcheck testsuite_flags)
340 dnl AC_CONFIG_COMMANDS([default],
341 dnl [if test -n "$CONFIG_FILES"; then
342 dnl ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
343 dnl grep '^MULTISUBDIR =' Makefile >> src/Makefile
344 dnl grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile
347 dnl chmod +x testsuite_flags
352 dnl with_multisubdir=${with_multisubdir}
353 dnl ac_configure_args="${multilib_arg} ${ac_configure_args}"
354 dnl CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
355 dnl glibcpp_basedir=${glibcpp_basedir}
362 # Sanity checking & User-visible messages.
363 # Checks down here, otherwise they get scrolled off before
364 # the user will notice.
366 # Trying to get more people to read documentation. Possibly remove
367 # check and warn all the time. There is no "informational" AC_MSG_
368 # macro, so these are going to be printed even when --quiet/--silent
370 if test ! -f stamp-sanity-warned; then
371 touch stamp-sanity-warned
373 echo "Please make certain that you read the installation information here:"
374 echo " faster => ${srcdir}/docs/install.html"
375 echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/install.html>"
377 echo "and the configuration information here:"
378 echo " faster => ${srcdir}/docs/configopts.html"
379 echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/configopts.html>"
381 echo "before proceeding with ${_cv_gnu_make_command}."