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 os_include_dir="config/os/newlib"
146 AC_DEFINE(HAVE_HYPOT)
150 # GLIBCPP_CHECK_STDLIB_SUPPORT
151 AC_DEFINE(HAVE_STRTOF)
152 AC_DEFINE(HAVE_STRTOLD)
156 AC_DEFINE(HAVE_ACOSF)
157 AC_DEFINE(HAVE_ASINF)
158 AC_DEFINE(HAVE_ATAN2F)
159 AC_DEFINE(HAVE_ATANF)
160 AC_DEFINE(HAVE_CEILF)
161 AC_DEFINE(HAVE_COPYSIGN)
162 AC_DEFINE(HAVE_COPYSIGNF)
164 AC_DEFINE(HAVE_COSHF)
166 AC_DEFINE(HAVE_FABSF)
167 AC_DEFINE(HAVE_FINITE)
168 AC_DEFINE(HAVE_FINITEF)
169 AC_DEFINE(HAVE_FLOORF)
170 AC_DEFINE(HAVE_FMODF)
171 AC_DEFINE(HAVE_FREXPF)
172 AC_DEFINE(HAVE_ISINF)
173 AC_DEFINE(HAVE_ISINFF)
174 AC_DEFINE(HAVE_ISNAN)
175 AC_DEFINE(HAVE_ISNANF)
176 AC_DEFINE(HAVE_LDEXPF)
177 AC_DEFINE(HAVE_LOG10F)
179 AC_DEFINE(HAVE_MODFF)
182 AC_DEFINE(HAVE_SINHF)
183 AC_DEFINE(HAVE_SQRTF)
185 AC_DEFINE(HAVE_TANHF)
187 # At some point, we should differentiate between architectures
188 # like x86, which have long double versions, and alpha/powerpc/etc.,
189 # which don't. For the time being, punt.
190 if test x"long_double_math_on_this_cpu" = x"yes"; then
191 AC_DEFINE(HAVE_ACOSL)
192 AC_DEFINE(HAVE_ASINL)
193 AC_DEFINE(HAVE_ATAN2L)
194 AC_DEFINE(HAVE_ATANL)
195 AC_DEFINE(HAVE_CEILL)
196 AC_DEFINE(HAVE_COPYSIGNL)
198 AC_DEFINE(HAVE_COSHL)
200 AC_DEFINE(HAVE_FABSL)
201 AC_DEFINE(HAVE_FINITEL)
202 AC_DEFINE(HAVE_FLOORL)
203 AC_DEFINE(HAVE_FMODL)
204 AC_DEFINE(HAVE_FREXPL)
205 AC_DEFINE(HAVE_ISINFL)
206 AC_DEFINE(HAVE_ISNANL)
207 AC_DEFINE(HAVE_LDEXPL)
208 AC_DEFINE(HAVE_LOG10L)
210 AC_DEFINE(HAVE_MODFL)
212 AC_DEFINE(HAVE_SINCOSL)
214 AC_DEFINE(HAVE_SINHL)
215 AC_DEFINE(HAVE_SQRTL)
217 AC_DEFINE(HAVE_TANHL)
221 # We are being configured natively. We can do more elaborate tests
222 # that include AC_TRY_COMPILE now, as the linker is assumed to be
224 GLIBCPP_IS_CROSS_COMPILING=0
227 # Check for available headers.
228 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
229 machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h])
231 GLIBCPP_CHECK_COMPILER_FEATURES
232 GLIBCPP_CHECK_LINKER_FEATURES
233 GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
234 GLIBCPP_CHECK_MATH_SUPPORT
235 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
236 GLIBCPP_CHECK_WCHAR_T_SUPPORT
237 GLIBCPP_CHECK_STDLIB_SUPPORT
242 ], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);],
243 [AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ])
248 # Establish limits on memory usage during 'make check'
249 GLIBCPP_CONFIGURE_TESTSUITE
252 # This depends on the possibly-skipped linker test above.
253 GLIBCPP_ENABLE_SYMVERS([yes])
255 # Propagate the target-specific source directories through the build chain.
256 OS_INC_SRCDIR=$os_include_dir/bits
257 ATOMICITY_INC_SRCDIR=$ATOMICITYH/bits
258 CPU_LIMITS_INC_SRCDIR=$CPULIMITSH/bits
259 AC_SUBST(OS_INC_SRCDIR)
260 AC_SUBST(ATOMICITY_INC_SRCDIR)
261 AC_SUBST(CPU_LIMITS_INC_SRCDIR)
263 # Set up cross-compile flags
264 AC_SUBST(GLIBCPP_IS_CROSS_COMPILING)
265 AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
269 if test "${multilib}" = "yes"; then
270 multilib_arg="--enable-multilib"
275 # Needed so that g++ can find the correct include subdir automatically.
278 # Export all the install information
279 GLIBCPP_EXPORT_INSTALL_INFO
281 # Export all the include and flag information to makefiles.
282 GLIBCPP_EXPORT_INCLUDES
285 if ${CONFIG_SHELL-/bin/sh} ./libtool --tag CXX --features |
286 grep "enable shared" > /dev/null; then
287 LIBSUPCXX_PICFLAGS=-prefer-pic
291 AC_SUBST(LIBSUPCXX_PICFLAGS)
293 # Generate the various Makefiles, include files, and scripts.
294 # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am
295 # and libsupc++/Makefile.am so that multilib installs will end up
296 # installed in the correct place. To work around this not being passed
297 # down from config-ml.in -> top_srcdir/Makefile.am ->
298 # top_srcdir/{src,libsupc++}/Makefile.am, manually append it here.
300 include/Makefile src/Makefile \
301 libmath/Makefile libio/Makefile libsupc++/Makefile \
302 po/Makefile testsuite/Makefile mkcheck testsuite_flags,
303 [if test -n "$CONFIG_FILES"; then
304 ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
305 grep '^MULTISUBDIR =' Makefile >> src/Makefile
306 grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile
309 chmod +x testsuite_flags
314 with_multisubdir=${with_multisubdir}
315 ac_configure_args="${multilib_arg} ${ac_configure_args}"
316 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
317 glibcpp_basedir=${glibcpp_basedir}
323 # Sanity checking & User-visible messages.
324 # Checks down here, otherwise they get scrolled off before
325 # the user will notice.
327 # Trying to get more people to read documentation. Possibly remove
328 # check and warn all the time. There is no "informational" AC_MSG_
329 # macro, so these are going to be printed even when --quiet/--silent
331 if test ! -f stamp-sanity-warned; then
332 touch stamp-sanity-warned
334 echo "Please make certain that you read the installation information here:"
335 echo " faster => ${srcdir}/docs/install.html"
336 echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/install.html>"
338 echo "and the configuration information here:"
339 echo " faster => ${srcdir}/docs/configopts.html"
340 echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/configopts.html>"
342 echo "before proceeding with ${_cv_gnu_make_command}."