1 # Process this file with autoconf to produce a configure script, like so:
2 # aclocal, autoconf, autoheader, automake
11 VERSION=$MAJOR_VERSION.$MINOR_VERSION.$MICRO_VERSION
15 # Gets and sets build, host, target, *_vendor, *_cpu, *_os, etc.
16 # AC 2.50 sets target_alias iff the user specified --target, but we use it
17 # everywhere, so we set it here just to be sure.
19 target_alias=${target_alias-$target}
20 AC_SUBST(target_alias)
22 AM_INIT_AUTOMAKE($PACKAGE, $VERSION)
23 AM_CONFIG_HEADER(config.h)
25 # Runs configure.host and configure.target, as well as finds CC, CXX
26 # and assorted other critical bits. Have to run this before the
27 # GLIBCPP_ENABLE_* macros below.
32 AC_SUBST(enable_shared)
33 AC_SUBST(enable_static)
35 AM_CONFIG_HEADER(config.h testsuite/testsuite_hooks.h)
37 # Check for c++ or library specific bits that don't require linking.
38 #GLIBCPP_CHECK_COMPILER_VERSION
39 GLIBCPP_CHECK_GNU_MAKE
41 # Enable all the variable C++ stuff. C_MBCHAR must come early.
42 GLIBCPP_ENABLE_DEBUG($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
54 if test -n "$with_cross_host" || test x"$build" != x"$host"; then
56 # We are being configured with some form of cross compiler.
57 # mknumeric_limits may not work correctly, either because the
58 # compiler may not run on this machine, may not be able to link
59 # executables, or may produce executables we can't run on this
60 # machine. Thus, just use the pre-generated include/bits/limits_generic.h
61 GLIBCPP_IS_CROSS_COMPILING=1
63 # If Canadian cross, then don't pick up tools from the build
65 if test -n "$with_cross_host" && test x"$build" != x"$with_cross_host"; then
71 case "$target_alias" in
73 # Construct linux crosses by hand, eliminating bits that need ld...
74 # Check for available headers.
75 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
76 machine/endian.h machine/param.h sys/machine.h fp.h locale.h \
79 # GLIBCPP_CHECK_COMPILER_FEATURES
80 SECTION_FLAGS='-ffunction-sections -fdata-sections'
81 AC_SUBST(SECTION_FLAGS)
82 GLIBCPP_CHECK_LINKER_FEATURES
83 # GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
84 # GLIBCPP_CHECK_MATH_SUPPORT
87 AC_DEFINE(HAVE_ATAN2F)
90 AC_DEFINE(HAVE_COPYSIGN)
91 AC_DEFINE(HAVE_COPYSIGNF)
96 AC_DEFINE(HAVE_FINITE)
97 AC_DEFINE(HAVE_FINITEF)
98 AC_DEFINE(HAVE_FLOORF)
100 AC_DEFINE(HAVE_FREXPF)
101 AC_DEFINE(HAVE_ISINF)
102 AC_DEFINE(HAVE_ISINFF)
103 AC_DEFINE(HAVE_ISNAN)
104 AC_DEFINE(HAVE_ISNANF)
105 AC_DEFINE(HAVE_LDEXPF)
106 AC_DEFINE(HAVE_LOG10F)
108 AC_DEFINE(HAVE_MODFF)
110 AC_DEFINE(HAVE_SINCOS)
111 AC_DEFINE(HAVE_SINCOSF)
113 AC_DEFINE(HAVE_SINHF)
114 AC_DEFINE(HAVE_SQRTF)
116 AC_DEFINE(HAVE_TANHF)
118 # At some point, we should differentiate between architectures
119 # like x86, which have long double versions, and alpha/powerpc/etc.,
120 # which don't. For the time being, punt.
121 if test x"long_double_math_on_this_cpu" = x"yes"; then
122 AC_DEFINE(HAVE_ACOSL)
123 AC_DEFINE(HAVE_ASINL)
124 AC_DEFINE(HAVE_ATAN2L)
125 AC_DEFINE(HAVE_ATANL)
126 AC_DEFINE(HAVE_CEILL)
127 AC_DEFINE(HAVE_COPYSIGNL)
129 AC_DEFINE(HAVE_COSHL)
131 AC_DEFINE(HAVE_FABSL)
132 AC_DEFINE(HAVE_FINITEL)
133 AC_DEFINE(HAVE_FLOORL)
134 AC_DEFINE(HAVE_FMODL)
135 AC_DEFINE(HAVE_FREXPL)
136 AC_DEFINE(HAVE_ISINFL)
137 AC_DEFINE(HAVE_ISNANL)
138 AC_DEFINE(HAVE_LDEXPL)
139 AC_DEFINE(HAVE_LOG10L)
141 AC_DEFINE(HAVE_MODFL)
143 AC_DEFINE(HAVE_SINCOSL)
145 AC_DEFINE(HAVE_SINHL)
146 AC_DEFINE(HAVE_SQRTL)
148 AC_DEFINE(HAVE_TANHL)
150 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
151 GLIBCPP_CHECK_WCHAR_T_SUPPORT
152 os_include_dir="config/os/gnu-linux"
153 # GLIBCPP_CHECK_STDLIB_SUPPORT
154 AC_DEFINE(HAVE_STRTOF)
155 AC_DEFINE(HAVE_STRTOLD)
160 # We assume newlib. This lets us hard-code the functions we know
162 AC_DEFINE(HAVE_FINITE)
163 AC_DEFINE(HAVE_ISNAN)
164 AC_DEFINE(HAVE_ISNANF)
165 AC_DEFINE(HAVE_ISINF)
166 AC_DEFINE(HAVE_ISINFF)
168 os_include_dir="config/os/newlib"
170 # need to check for faster f versions of math functions, ie sinf?
175 # We are being configured natively. We can do more elaborate tests
176 # that include AC_TRY_COMPILE now, as the linker is assumed to be
178 GLIBCPP_IS_CROSS_COMPILING=0
181 # Check for available headers.
182 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
183 machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h])
185 GLIBCPP_CHECK_COMPILER_FEATURES
186 GLIBCPP_CHECK_LINKER_FEATURES
187 GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
188 GLIBCPP_CHECK_MATH_SUPPORT
189 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
190 GLIBCPP_CHECK_WCHAR_T_SUPPORT
191 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. ])])
202 # Enable/configure some pieces which may require knowledge about the
203 # compiler situation (native/cross), which we just finished discovering.
204 GLIBCPP_CONFIGURE_TESTSUITE
206 # Propagate the target-specific source directories through the build chain.
207 OS_INC_SRCDIR=$os_include_dir/bits
208 ATOMICITY_INC_SRCDIR=$ATOMICITYH/bits
209 AC_SUBST(OS_INC_SRCDIR)
210 AC_SUBST(ATOMICITY_INC_SRCDIR)
212 # Set up cross-compile flags
213 AC_SUBST(GLIBCPP_IS_CROSS_COMPILING)
214 AM_CONDITIONAL(CANADIAN, test "$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 ${CONFIG_SHELL-/bin/sh} ./libtool --tag CXX --features |
236 grep "enable shared" > /dev/null; then
237 LIBSUPCXX_PICFLAGS=-prefer-pic
241 AC_SUBST(LIBSUPCXX_PICFLAGS)
243 # Generate the various Makefiles, include files, and scripts.
244 # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am
245 # and libsupc++/Makefile.am so that multilib installs will end up
246 # installed in the correct place. To work around this not being passed
247 # down from config-ml.in -> top_srcdir/Makefile.am ->
248 # top_srcdir/{src,libsupc++}/Makefile.am, manually append it here.
250 include/Makefile src/Makefile \
251 libmath/Makefile libio/Makefile libsupc++/Makefile \
252 po/Makefile intl/Makefile testsuite/Makefile mkcheck testsuite_flags,
253 [if test -n "$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}."