1 # Process this file with autoconf to produce a configure script, like so:
2 # aclocal && autoconf && autoheader && automake
7 # This works around the fact that libtool configuration may change LD
8 # for this particular configuration, but some shells, instead of
9 # keeping the changes in LD private, export them just because LD is
11 ORIGINAL_LD_FOR_MULTILIBS=$LD
15 # For libtool versioning info, format is CURRENT:REVISION:AGE
17 AC_SUBST(libtool_VERSION)
19 GLIBCPP_TOPREL_CONFIGURE
21 # Gets build, host, target, *_vendor, *_cpu, *_os, etc.
22 # AC 2.5x sets target_alias iff the user specified --target, but we use it
23 # everywhere, so we set it here just to be sure. In AC 2.13
24 # AC_CANONICAL_TARGET was known as AC_CANONICAL_SYSTEM.
26 target_alias=${target_alias-$target}
27 AC_SUBST(target_alias)
29 # Runs configure.host and configure.target, as well as finds CC, CXX
30 # and assorted other critical bits. Have to run this before the
31 # GLIBCPP_ENABLE_* macros below.
34 AM_INIT_AUTOMAKE($PACKAGE, $gcc_version)
35 AM_CONFIG_HEADER(config.h)
39 AC_SUBST(enable_shared)
40 AC_SUBST(enable_static)
42 # Check for c++ or library specific bits that don't require linking.
43 #GLIBCPP_CHECK_COMPILER_VERSION
44 GLIBCPP_CHECK_GNU_MAKE
46 # Enable all the variable C++ stuff. C_MBCHAR must come early.
47 GLIBCPP_ENABLE_DEBUG($USE_MAINTAINER_MODE)
49 GLIBCPP_ENABLE_CLOCALE
50 GLIBCPP_ENABLE_C_MBCHAR([yes])
51 GLIBCPP_ENABLE_C99([yes])
52 GLIBCPP_ENABLE_LONG_LONG([yes])
53 GLIBCPP_ENABLE_CHEADERS([$c_model])
54 GLIBCPP_ENABLE_THREADS
55 GLIBCPP_ENABLE_CXX_FLAGS([none])
56 GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
57 GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS
58 GLIBCPP_ENABLE_CONCEPT_CHECKS
60 # Check for headers necessary for libsupc++ using dyn-string.c/cxa_demangle.c
61 AC_CHECK_HEADERS(string.h stdlib.h)
63 if test -n "$with_cross_host" || test x"$build" != x"$host"; then
65 # This lets us hard-code the functionality we know
66 # we'll have in the cross target environment. "Let" is a
67 # sugar-coated word placed on an especially dull and tedious hack, actually.
68 # Here's why GLIBCPP_CHECK_MATH_SUPPORT, and other autoconf macros
69 # that involve linking can't be used:
70 # "cannot open sim-crt0.o"
71 # "cannot open crt0.o"
72 # etc. All this is because there currently exists no unified,
73 # consistent way for top level CC information to be passed down
74 # to target directories: newlib includes, newlib linking info,
75 # libgloss versus newlib crt0.o, etc. When all of this is done, all
76 # of this hokey, excessive AC_DEFINE junk for crosses can be removed.
78 # We are being configured with some form of cross compiler.
79 GLIBCPP_IS_CROSS_COMPILING=1
81 # If Canadian cross, then don't pick up tools from the build
83 if test -n "$with_cross_host" && test x"$build" != x"$with_cross_host"; then
89 # Construct crosses by hand, eliminating bits that need ld...
90 # GLIBCPP_CHECK_COMPILER_FEATURES
91 # GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
92 # GLIBCPP_CHECK_MATH_SUPPORT
94 case "$target_alias" in
96 # Check for available headers.
97 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
98 machine/endian.h machine/param.h sys/machine.h sys/types.h \
99 fp.h locale.h float.h inttypes.h])
100 SECTION_FLAGS='-ffunction-sections -fdata-sections'
101 AC_SUBST(SECTION_FLAGS)
102 GLIBCPP_CHECK_LINKER_FEATURES
103 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
104 GLIBCPP_CHECK_WCHAR_T_SUPPORT
105 os_include_dir="config/os/gnu-linux"
106 AC_DEFINE(HAVE_COPYSIGN)
107 AC_DEFINE(HAVE_COPYSIGNF)
108 AC_DEFINE(HAVE_FINITEF)
109 AC_DEFINE(HAVE_FREXPF)
110 AC_DEFINE(HAVE_HYPOTF)
111 AC_DEFINE(HAVE_SINCOS)
112 AC_DEFINE(HAVE_SINCOSF)
113 if test x"long_double_math_on_this_cpu" = x"yes"; then
114 AC_DEFINE(HAVE_HYPOTL)
118 # Check for available headers.
119 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
120 machine/endian.h machine/param.h sys/machine.h sys/types.h \
121 fp.h locale.h float.h inttypes.h])
122 SECTION_FLAGS='-ffunction-sections -fdata-sections'
123 AC_SUBST(SECTION_FLAGS)
124 GLIBCPP_CHECK_LINKER_FEATURES
125 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
126 GLIBCPP_CHECK_WCHAR_T_SUPPORT
127 os_include_dir="config/os/hpux"
128 AC_DEFINE(HAVE_COPYSIGN)
129 AC_DEFINE(HAVE_COPYSIGNF)
130 AC_DEFINE(HAVE_FINITEF)
131 AC_DEFINE(HAVE_FREXPF)
132 AC_DEFINE(HAVE_HYPOT)
133 AC_DEFINE(HAVE_SINCOS)
134 AC_DEFINE(HAVE_SINCOSF)
137 # Check for available headers.
138 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
139 machine/endian.h machine/param.h sys/machine.h sys/types.h \
140 fp.h locale.h float.h inttypes.h])
141 SECTION_FLAGS='-ffunction-sections -fdata-sections'
142 AC_SUBST(SECTION_FLAGS)
143 GLIBCPP_CHECK_LINKER_FEATURES
144 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
145 GLIBCPP_CHECK_WCHAR_T_SUPPORT
146 os_include_dir="config/os/bsd/netbsd"
147 AC_DEFINE(HAVE_COPYSIGN)
148 AC_DEFINE(HAVE_COPYSIGNF)
149 AC_DEFINE(HAVE_FINITEF)
150 AC_DEFINE(HAVE_FREXPF)
151 AC_DEFINE(HAVE_HYPOTF)
154 AC_CHECK_HEADERS([sys/types.h locale.h float.h])
155 GLIBCPP_CHECK_LINKER_FEATURES
156 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
157 GLIBCPP_CHECK_WCHAR_T_SUPPORT
158 os_include_dir="config/os/mingw32"
163 SECTION_FLAGS='-ffunction-sections -fdata-sections'
164 AC_SUBST(SECTION_FLAGS)
165 GLIBCPP_CHECK_LINKER_FEATURES
166 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
167 GLIBCPP_CHECK_WCHAR_T_SUPPORT
168 os_include_dir="config/os/qnx/qnx6.1"
171 AC_DEFINE(HAVE_COSHF)
172 AC_DEFINE(HAVE_COSHL)
175 AC_DEFINE(HAVE_LOG10F)
176 AC_DEFINE(HAVE_LOG10L)
179 AC_DEFINE(HAVE_SINHF)
180 AC_DEFINE(HAVE_SINHL)
183 os_include_dir="config/os/newlib"
184 AC_DEFINE(HAVE_HYPOT)
188 case "$target_alias" in
192 # GLIBCPP_CHECK_STDLIB_SUPPORT
193 AC_DEFINE(HAVE_STRTOF)
194 AC_DEFINE(HAVE_STRTOLD)
198 AC_DEFINE(HAVE_ACOSF)
199 AC_DEFINE(HAVE_ASINF)
200 AC_DEFINE(HAVE_ATAN2F)
201 AC_DEFINE(HAVE_ATANF)
202 AC_DEFINE(HAVE_CEILF)
203 AC_DEFINE(HAVE_COPYSIGN)
204 AC_DEFINE(HAVE_COPYSIGNF)
206 AC_DEFINE(HAVE_COSHF)
208 AC_DEFINE(HAVE_FABSF)
209 AC_DEFINE(HAVE_FINITE)
210 AC_DEFINE(HAVE_FINITEF)
211 AC_DEFINE(HAVE_FLOORF)
212 AC_DEFINE(HAVE_FMODF)
213 AC_DEFINE(HAVE_FREXPF)
214 AC_DEFINE(HAVE_ISINF)
215 AC_DEFINE(HAVE_ISINFF)
216 AC_DEFINE(HAVE_ISNAN)
217 AC_DEFINE(HAVE_ISNANF)
218 AC_DEFINE(HAVE_LDEXPF)
219 AC_DEFINE(HAVE_LOG10F)
221 AC_DEFINE(HAVE_MODFF)
224 AC_DEFINE(HAVE_SINHF)
225 AC_DEFINE(HAVE_SQRTF)
227 AC_DEFINE(HAVE_TANHF)
231 # At some point, we should differentiate between architectures
232 # like x86, which have long double versions, and alpha/powerpc/etc.,
233 # which don't. For the time being, punt.
234 if test x"long_double_math_on_this_cpu" = x"yes"; then
235 AC_DEFINE(HAVE_ACOSL)
236 AC_DEFINE(HAVE_ASINL)
237 AC_DEFINE(HAVE_ATAN2L)
238 AC_DEFINE(HAVE_ATANL)
239 AC_DEFINE(HAVE_CEILL)
240 AC_DEFINE(HAVE_COPYSIGNL)
242 AC_DEFINE(HAVE_COSHL)
244 AC_DEFINE(HAVE_FABSL)
245 AC_DEFINE(HAVE_FINITEL)
246 AC_DEFINE(HAVE_FLOORL)
247 AC_DEFINE(HAVE_FMODL)
248 AC_DEFINE(HAVE_FREXPL)
249 AC_DEFINE(HAVE_ISINFL)
250 AC_DEFINE(HAVE_ISNANL)
251 AC_DEFINE(HAVE_LDEXPL)
252 AC_DEFINE(HAVE_LOG10L)
254 AC_DEFINE(HAVE_MODFL)
256 AC_DEFINE(HAVE_SINCOSL)
258 AC_DEFINE(HAVE_SINHL)
259 AC_DEFINE(HAVE_SQRTL)
261 AC_DEFINE(HAVE_TANHL)
265 # We are being configured natively. We can do more elaborate tests
266 # that include AC_TRY_COMPILE now, as the linker is assumed to be
268 GLIBCPP_IS_CROSS_COMPILING=0
271 # Check for available headers.
272 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
273 machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h sys/types.h])
275 GLIBCPP_CHECK_COMPILER_FEATURES
276 GLIBCPP_CHECK_LINKER_FEATURES
277 GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
278 GLIBCPP_CHECK_MATH_SUPPORT
279 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
280 GLIBCPP_CHECK_WCHAR_T_SUPPORT
281 GLIBCPP_CHECK_STDLIB_SUPPORT
286 ], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);],
287 [AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ])
292 # Establish limits on memory usage during 'make check'
293 GLIBCPP_CONFIGURE_TESTSUITE
296 # This depends on the possibly-skipped linker test above.
297 GLIBCPP_ENABLE_SYMVERS([yes])
299 # Propagate the target-specific source directories through the build chain.
300 OS_INC_SRCDIR=$os_include_dir/bits
301 ATOMICITY_INC_SRCDIR=$ATOMICITYH/bits
302 CPU_LIMITS_INC_SRCDIR=$CPULIMITSH/bits
303 AC_SUBST(OS_INC_SRCDIR)
304 AC_SUBST(ATOMICITY_INC_SRCDIR)
305 AC_SUBST(CPU_LIMITS_INC_SRCDIR)
307 # Set up cross-compile flags
308 AC_SUBST(GLIBCPP_IS_CROSS_COMPILING)
309 AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
313 if test "${multilib}" = "yes"; then
314 multilib_arg="--enable-multilib"
319 # Export all the install information
320 GLIBCPP_EXPORT_INSTALL_INFO
322 # Export all the include and flag information to makefiles.
323 GLIBCPP_EXPORT_INCLUDES
326 if ${CONFIG_SHELL-/bin/sh} ./libtool --tag CXX --features |
327 grep "enable shared" > /dev/null; then
328 LIBSUPCXX_PICFLAGS=-prefer-pic
332 AC_SUBST(LIBSUPCXX_PICFLAGS)
334 # Generate the various Makefiles, include files, and scripts.
335 # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am
336 # and libsupc++/Makefile.am so that multilib installs will end up
337 # installed in the correct place. To work around this not being passed
338 # down from config-ml.in -> top_srcdir/Makefile.am ->
339 # top_srcdir/{src,libsupc++}/Makefile.am, manually append it here.
341 include/Makefile src/Makefile \
342 libmath/Makefile libio/Makefile libsupc++/Makefile \
343 po/Makefile testsuite/Makefile mkcheck testsuite_flags,
344 [if test -n "$CONFIG_FILES"; then
345 LD="${ORIGINAL_LD_FOR_MULTILIBS}"
346 ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
347 grep '^MULTISUBDIR =' Makefile >> src/Makefile
348 grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile
351 chmod +x testsuite_flags
356 with_multisubdir=${with_multisubdir}
357 ac_configure_args="${multilib_arg} ${ac_configure_args}"
358 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
359 glibcpp_basedir=${glibcpp_basedir}
363 dnl In autoconf 2.5x, AC_OUTPUT is replaced by three AC_ macros:
364 dnl AC_CONFIG_FILES(Makefile \
365 dnl include/Makefile src/Makefile \
366 dnl libmath/Makefile libio/Makefile libsupc++/Makefile \
367 dnl po/Makefile testsuite/Makefile mkcheck testsuite_flags)
368 dnl AC_CONFIG_COMMANDS([default],
369 dnl [if test -n "$CONFIG_FILES"; then
370 dnl ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
371 dnl grep '^MULTISUBDIR =' Makefile >> src/Makefile
372 dnl grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile
375 dnl chmod +x testsuite_flags
380 dnl with_multisubdir=${with_multisubdir}
381 dnl ac_configure_args="${multilib_arg} ${ac_configure_args}"
382 dnl CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
383 dnl glibcpp_basedir=${glibcpp_basedir}
390 # Sanity checking & User-visible messages.
391 # Checks down here, otherwise they get scrolled off before
392 # the user will notice.
394 # Trying to get more people to read documentation. Possibly remove
395 # check and warn all the time. There is no "informational" AC_MSG_
396 # macro, so these are going to be printed even when --quiet/--silent
398 if test ! -f stamp-sanity-warned; then
399 touch stamp-sanity-warned
401 echo "Please make certain that you read the installation information here:"
402 echo " faster => ${srcdir}/docs/html/install.html"
403 echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/install.html>"
405 echo "and the configuration information here:"
406 echo " faster => ${srcdir}/docs/html/configopts.html"
407 echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/configopts.html>"
409 echo "before proceeding with ${_cv_gnu_make_command}."