1 # Process this file with autoconf to produce a configure script, like so:
2 # aclocal, autoconf, autoheader, automake
11 VERSION=$MAJOR_VERSION.$MINOR_VERSION.$MICRO_VERSION
15 # Gets build, host, target, *_vendor, *_cpu, *_os, etc.
16 # AC 2.50 sets target_alias iff the user specified --target, but we use it
17 # everywhere, so we set it here just to be sure.
19 target_alias=${target_alias-$target}
20 AC_SUBST(target_alias)
22 AM_INIT_AUTOMAKE($PACKAGE, $VERSION)
23 AM_CONFIG_HEADER(config.h)
25 # Runs configure.host and configure.target, as well as finds CC, CXX
26 # and assorted other critical bits. Have to run this before the
27 # GLIBCPP_ENABLE_* macros below.
32 AC_SUBST(enable_shared)
33 AC_SUBST(enable_static)
35 # Check for c++ or library specific bits that don't require linking.
36 #GLIBCPP_CHECK_COMPILER_VERSION
37 GLIBCPP_CHECK_GNU_MAKE
39 # Enable all the variable C++ stuff. C_MBCHAR must come early.
40 GLIBCPP_ENABLE_DEBUG($USE_MAINTAINER_MODE)
42 GLIBCPP_ENABLE_CLOCALE
43 GLIBCPP_ENABLE_C_MBCHAR([yes])
44 GLIBCPP_ENABLE_C99([yes])
45 GLIBCPP_ENABLE_LONG_LONG([yes])
46 GLIBCPP_ENABLE_CHEADERS([c_std])
47 GLIBCPP_ENABLE_THREADS
48 GLIBCPP_ENABLE_CXX_FLAGS([none])
49 GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
52 if test -n "$with_cross_host" || test x"$build" != x"$host"; then
54 # We are being configured with some form of cross compiler.
55 # mknumeric_limits may not work correctly, either because the
56 # compiler may not run on this machine, may not be able to link
57 # executables, or may produce executables we can't run on this
58 # machine. Thus, just use the pre-generated include/bits/limits_generic.h
59 GLIBCPP_IS_CROSS_COMPILING=1
61 # If Canadian cross, then don't pick up tools from the build
63 if test -n "$with_cross_host" && test x"$build" != x"$with_cross_host"; then
69 case "$target_alias" in
71 # Construct linux crosses by hand, eliminating bits that need ld...
72 # Check for available headers.
73 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
74 machine/endian.h machine/param.h sys/machine.h fp.h locale.h \
77 # GLIBCPP_CHECK_COMPILER_FEATURES
78 SECTION_FLAGS='-ffunction-sections -fdata-sections'
79 AC_SUBST(SECTION_FLAGS)
80 GLIBCPP_CHECK_LINKER_FEATURES
81 # GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
82 # GLIBCPP_CHECK_MATH_SUPPORT
85 AC_DEFINE(HAVE_ATAN2F)
88 AC_DEFINE(HAVE_COPYSIGN)
89 AC_DEFINE(HAVE_COPYSIGNF)
94 AC_DEFINE(HAVE_FINITE)
95 AC_DEFINE(HAVE_FINITEF)
96 AC_DEFINE(HAVE_FLOORF)
98 AC_DEFINE(HAVE_FREXPF)
100 AC_DEFINE(HAVE_ISINFF)
101 AC_DEFINE(HAVE_ISNAN)
102 AC_DEFINE(HAVE_ISNANF)
103 AC_DEFINE(HAVE_LDEXPF)
104 AC_DEFINE(HAVE_LOG10F)
106 AC_DEFINE(HAVE_MODFF)
108 AC_DEFINE(HAVE_SINCOS)
109 AC_DEFINE(HAVE_SINCOSF)
111 AC_DEFINE(HAVE_SINHF)
112 AC_DEFINE(HAVE_SQRTF)
114 AC_DEFINE(HAVE_TANHF)
116 # At some point, we should differentiate between architectures
117 # like x86, which have long double versions, and alpha/powerpc/etc.,
118 # which don't. For the time being, punt.
119 if test x"long_double_math_on_this_cpu" = x"yes"; then
120 AC_DEFINE(HAVE_ACOSL)
121 AC_DEFINE(HAVE_ASINL)
122 AC_DEFINE(HAVE_ATAN2L)
123 AC_DEFINE(HAVE_ATANL)
124 AC_DEFINE(HAVE_CEILL)
125 AC_DEFINE(HAVE_COPYSIGNL)
127 AC_DEFINE(HAVE_COSHL)
129 AC_DEFINE(HAVE_FABSL)
130 AC_DEFINE(HAVE_FINITEL)
131 AC_DEFINE(HAVE_FLOORL)
132 AC_DEFINE(HAVE_FMODL)
133 AC_DEFINE(HAVE_FREXPL)
134 AC_DEFINE(HAVE_ISINFL)
135 AC_DEFINE(HAVE_ISNANL)
136 AC_DEFINE(HAVE_LDEXPL)
137 AC_DEFINE(HAVE_LOG10L)
139 AC_DEFINE(HAVE_MODFL)
141 AC_DEFINE(HAVE_SINCOSL)
143 AC_DEFINE(HAVE_SINHL)
144 AC_DEFINE(HAVE_SQRTL)
146 AC_DEFINE(HAVE_TANHL)
148 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
149 GLIBCPP_CHECK_WCHAR_T_SUPPORT
150 os_include_dir="config/os/gnu-linux"
151 # GLIBCPP_CHECK_STDLIB_SUPPORT
152 AC_DEFINE(HAVE_STRTOF)
153 AC_DEFINE(HAVE_STRTOLD)
158 # We assume newlib. This lets us hard-code the functions we know
160 AC_DEFINE(HAVE_FINITE)
161 AC_DEFINE(HAVE_ISNAN)
162 AC_DEFINE(HAVE_ISNANF)
163 AC_DEFINE(HAVE_ISINF)
164 AC_DEFINE(HAVE_ISINFF)
166 os_include_dir="config/os/newlib"
168 # need to check for faster f versions of math functions, ie sinf?
173 # We are being configured natively. We can do more elaborate tests
174 # that include AC_TRY_COMPILE now, as the linker is assumed to be
176 GLIBCPP_IS_CROSS_COMPILING=0
179 # Check for available headers.
180 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
181 machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h])
183 GLIBCPP_CHECK_COMPILER_FEATURES
184 GLIBCPP_CHECK_LINKER_FEATURES
185 GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
186 GLIBCPP_CHECK_MATH_SUPPORT
187 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
188 GLIBCPP_CHECK_WCHAR_T_SUPPORT
189 GLIBCPP_CHECK_STDLIB_SUPPORT
194 ], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);],
195 [AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ])])
199 # Establish limits on memory usage during 'make check'
200 GLIBCPP_CONFIGURE_TESTSUITE
204 # Propagate the target-specific source directories through the build chain.
205 OS_INC_SRCDIR=$os_include_dir/bits
206 ATOMICITY_INC_SRCDIR=$ATOMICITYH/bits
207 LIMITS_INC_SRCDIR=$LIMITSH/bits
208 AC_SUBST(OS_INC_SRCDIR)
209 AC_SUBST(ATOMICITY_INC_SRCDIR)
210 AC_SUBST(LIMITS_INC_SRCDIR)
212 # Set up cross-compile flags
213 AC_SUBST(GLIBCPP_IS_CROSS_COMPILING)
214 AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
218 if test "${multilib}" = "yes"; then
219 multilib_arg="--enable-multilib"
224 # Needed so that g++ can find the correct include subdir automatically.
227 # Export all the install information
228 GLIBCPP_EXPORT_INSTALL_INFO
230 # Export all the include and flag information to makefiles.
231 GLIBCPP_EXPORT_INCLUDES
234 if ${CONFIG_SHELL-/bin/sh} ./libtool --tag CXX --features |
235 grep "enable shared" > /dev/null; then
236 LIBSUPCXX_PICFLAGS=-prefer-pic
240 AC_SUBST(LIBSUPCXX_PICFLAGS)
242 # Generate the various Makefiles, include files, and scripts.
243 # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am
244 # and libsupc++/Makefile.am so that multilib installs will end up
245 # installed in the correct place. To work around this not being passed
246 # down from config-ml.in -> top_srcdir/Makefile.am ->
247 # top_srcdir/{src,libsupc++}/Makefile.am, manually append it here.
249 include/Makefile src/Makefile \
250 libmath/Makefile libio/Makefile libsupc++/Makefile \
251 po/Makefile intl/Makefile testsuite/Makefile mkcheck testsuite_flags,
252 [if test -n "$CONFIG_FILES"; then
253 ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
254 grep '^MULTISUBDIR =' Makefile >> src/Makefile
255 grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile
258 chmod +x testsuite_flags
263 with_multisubdir=${with_multisubdir}
264 ac_configure_args="${multilib_arg} ${ac_configure_args}"
265 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
266 glibcpp_basedir=${glibcpp_basedir}
272 # Sanity checking & User-visible messages.
273 # Checks down here, otherwise they get scrolled off before
274 # the user will notice.
276 # Trying to get more people to read documentation. Possibly remove
277 # check and warn all the time. There is no "informational" AC_MSG_
278 # macro, so these are going to be printed even when --quiet/--silent
280 if test ! -f stamp-sanity-warned; then
281 touch stamp-sanity-warned
283 echo "Please make certain that you read the installation information here:"
284 echo " faster => ${srcdir}/docs/install.html"
285 echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/install.html>"
287 echo "and the configuration information here:"
288 echo " faster => ${srcdir}/docs/configopts.html"
289 echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/configopts.html>"
291 echo "before proceeding with ${_cv_gnu_make_command}."