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
53 if test -n "$with_cross_host" || test x"$build" != x"$host"; then
55 # We are being configured with some form of cross compiler.
56 # mknumeric_limits may not work correctly, either because the
57 # compiler may not run on this machine, may not be able to link
58 # executables, or may produce executables we can't run on this
59 # machine. Thus, just use the pre-generated include/bits/limits_generic.h
60 GLIBCPP_IS_CROSS_COMPILING=1
62 # If Canadian cross, then don't pick up tools from the build
64 if test -n "$with_cross_host" && test x"$build" != x"$with_cross_host"; then
70 case "$target_alias" in
72 # Construct linux crosses by hand, eliminating bits that need ld...
73 # Check for available headers.
74 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
75 machine/endian.h machine/param.h sys/machine.h sys/types.h \
76 fp.h locale.h float.h inttypes.h])
78 # GLIBCPP_CHECK_COMPILER_FEATURES
79 SECTION_FLAGS='-ffunction-sections -fdata-sections'
80 AC_SUBST(SECTION_FLAGS)
81 GLIBCPP_CHECK_LINKER_FEATURES
82 # GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
83 # GLIBCPP_CHECK_MATH_SUPPORT
86 AC_DEFINE(HAVE_ATAN2F)
89 AC_DEFINE(HAVE_COPYSIGN)
90 AC_DEFINE(HAVE_COPYSIGNF)
95 AC_DEFINE(HAVE_FINITE)
96 AC_DEFINE(HAVE_FINITEF)
97 AC_DEFINE(HAVE_FLOORF)
99 AC_DEFINE(HAVE_FREXPF)
100 AC_DEFINE(HAVE_ISINF)
101 AC_DEFINE(HAVE_ISINFF)
102 AC_DEFINE(HAVE_ISNAN)
103 AC_DEFINE(HAVE_ISNANF)
104 AC_DEFINE(HAVE_LDEXPF)
105 AC_DEFINE(HAVE_LOG10F)
107 AC_DEFINE(HAVE_MODFF)
109 AC_DEFINE(HAVE_SINCOS)
110 AC_DEFINE(HAVE_SINCOSF)
112 AC_DEFINE(HAVE_SINHF)
113 AC_DEFINE(HAVE_SQRTF)
115 AC_DEFINE(HAVE_TANHF)
117 # At some point, we should differentiate between architectures
118 # like x86, which have long double versions, and alpha/powerpc/etc.,
119 # which don't. For the time being, punt.
120 if test x"long_double_math_on_this_cpu" = x"yes"; then
121 AC_DEFINE(HAVE_ACOSL)
122 AC_DEFINE(HAVE_ASINL)
123 AC_DEFINE(HAVE_ATAN2L)
124 AC_DEFINE(HAVE_ATANL)
125 AC_DEFINE(HAVE_CEILL)
126 AC_DEFINE(HAVE_COPYSIGNL)
128 AC_DEFINE(HAVE_COSHL)
130 AC_DEFINE(HAVE_FABSL)
131 AC_DEFINE(HAVE_FINITEL)
132 AC_DEFINE(HAVE_FLOORL)
133 AC_DEFINE(HAVE_FMODL)
134 AC_DEFINE(HAVE_FREXPL)
135 AC_DEFINE(HAVE_ISINFL)
136 AC_DEFINE(HAVE_ISNANL)
137 AC_DEFINE(HAVE_LDEXPL)
138 AC_DEFINE(HAVE_LOG10L)
140 AC_DEFINE(HAVE_MODFL)
142 AC_DEFINE(HAVE_SINCOSL)
144 AC_DEFINE(HAVE_SINHL)
145 AC_DEFINE(HAVE_SQRTL)
147 AC_DEFINE(HAVE_TANHL)
149 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
150 GLIBCPP_CHECK_WCHAR_T_SUPPORT
151 os_include_dir="config/os/gnu-linux"
152 # GLIBCPP_CHECK_STDLIB_SUPPORT
153 AC_DEFINE(HAVE_STRTOF)
154 AC_DEFINE(HAVE_STRTOLD)
159 # We assume newlib. This lets us hard-code the functions we know
161 AC_DEFINE(HAVE_FINITE)
162 AC_DEFINE(HAVE_ISNAN)
163 AC_DEFINE(HAVE_ISNANF)
164 AC_DEFINE(HAVE_ISINF)
165 AC_DEFINE(HAVE_ISINFF)
167 os_include_dir="config/os/newlib"
169 # need to check for faster f versions of math functions, ie sinf?
174 # We are being configured natively. We can do more elaborate tests
175 # that include AC_TRY_COMPILE now, as the linker is assumed to be
177 GLIBCPP_IS_CROSS_COMPILING=0
180 # Check for available headers.
181 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
182 machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h])
184 GLIBCPP_CHECK_COMPILER_FEATURES
185 GLIBCPP_CHECK_LINKER_FEATURES
186 GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
187 GLIBCPP_CHECK_MATH_SUPPORT
188 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
189 GLIBCPP_CHECK_WCHAR_T_SUPPORT
190 GLIBCPP_CHECK_STDLIB_SUPPORT
195 ], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);],
196 [AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ])])
200 # Establish limits on memory usage during 'make check'
201 GLIBCPP_CONFIGURE_TESTSUITE
205 # Propagate the target-specific source directories through the build chain.
206 OS_INC_SRCDIR=$os_include_dir/bits
207 ATOMICITY_INC_SRCDIR=$ATOMICITYH/bits
208 LIMITS_INC_SRCDIR=$LIMITSH/bits
209 AC_SUBST(OS_INC_SRCDIR)
210 AC_SUBST(ATOMICITY_INC_SRCDIR)
211 AC_SUBST(LIMITS_INC_SRCDIR)
213 # Set up cross-compile flags
214 AC_SUBST(GLIBCPP_IS_CROSS_COMPILING)
215 AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
219 if test "${multilib}" = "yes"; then
220 multilib_arg="--enable-multilib"
225 # Needed so that g++ can find the correct include subdir automatically.
228 # Export all the install information
229 GLIBCPP_EXPORT_INSTALL_INFO
231 # Export all the include and flag information to makefiles.
232 GLIBCPP_EXPORT_INCLUDES
235 if ${CONFIG_SHELL-/bin/sh} ./libtool --tag CXX --features |
236 grep "enable shared" > /dev/null; then
237 LIBSUPCXX_PICFLAGS=-prefer-pic
241 AC_SUBST(LIBSUPCXX_PICFLAGS)
243 # Generate the various Makefiles, include files, and scripts.
244 # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am
245 # and libsupc++/Makefile.am so that multilib installs will end up
246 # installed in the correct place. To work around this not being passed
247 # down from config-ml.in -> top_srcdir/Makefile.am ->
248 # top_srcdir/{src,libsupc++}/Makefile.am, manually append it here.
250 include/Makefile src/Makefile \
251 libmath/Makefile libio/Makefile libsupc++/Makefile \
252 po/Makefile testsuite/Makefile mkcheck testsuite_flags,
253 [if test -n "$CONFIG_FILES"; then
254 ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
255 grep '^MULTISUBDIR =' Makefile >> src/Makefile
256 grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile
259 chmod +x testsuite_flags
264 with_multisubdir=${with_multisubdir}
265 ac_configure_args="${multilib_arg} ${ac_configure_args}"
266 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
267 glibcpp_basedir=${glibcpp_basedir}
273 # Sanity checking & User-visible messages.
274 # Checks down here, otherwise they get scrolled off before
275 # the user will notice.
277 # Trying to get more people to read documentation. Possibly remove
278 # check and warn all the time. There is no "informational" AC_MSG_
279 # macro, so these are going to be printed even when --quiet/--silent
281 if test ! -f stamp-sanity-warned; then
282 touch stamp-sanity-warned
284 echo "Please make certain that you read the installation information here:"
285 echo " faster => ${srcdir}/docs/install.html"
286 echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/install.html>"
288 echo "and the configuration information here:"
289 echo " faster => ${srcdir}/docs/configopts.html"
290 echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/configopts.html>"
292 echo "before proceeding with ${_cv_gnu_make_command}."