1 # Process this file with autoconf to produce a configure script, like so:
2 # aclocal, autoconf, autoheader, automake
5 AC_INIT(src/complex.cc)
8 # Gets and sets build, host, target, *_vendor, *_cpu, *_os, etc.
11 # We use these options to decide which functions to include.
12 AC_ARG_WITH(target-subdir,
13 [ --with-target-subdir=SUBDIR
14 configuring in a subdirectory])
15 AC_ARG_WITH(cross-host,
16 [ --with-cross-host=HOST configuring with a cross compiler])
18 # Runs configure.host and configure.target. Have to run this before
19 # the GLIBCPP_ENABLE_* macros below.
24 AC_SUBST(enable_shared)
25 AC_SUBST(enable_static)
26 GLIBCPP_CHECK_GNU_MAKE
27 if test "x$_cv_gnu_make_command" = "x"; then
28 AC_MSG_ERROR([GNU make not found. Please install it or correct your path.])
30 AM_CONFIG_HEADER(config.h)
32 # Check for c++ or library specific bits that don't require linking.
33 GLIBCPP_CHECK_COMPILER_VERSION
35 # Enable all the crazy c++ stuff. C_MBCHAR must come early.
36 GLIBCPP_ENABLE_DEBUG($USE_MAINTAINER_MODE)
38 GLIBCPP_ENABLE_C_MBCHAR([yes])
39 GLIBCPP_ENABLE_LONG_LONG([yes])
40 GLIBCPP_ENABLE_SHADOW([no])
41 GLIBCPP_ENABLE_THREADS
42 GLIBCPP_ENABLE_ATOMICITY
43 GLIBCPP_ENABLE_CXX_FLAGS([none])
45 if test -n "$with_cross_host"; then
47 # We are being configured with a cross compiler. AC_REPLACE_FUNCS
48 # may not work correctly, because the compiler may not be able to
53 # If Canadian cross, then don't pick up tools from the build
55 if test x"$build" != x"$with_cross_host" && x"$build" != x"$target"; then
63 case "$target_alias" in
65 # Construct linux crosses by hand, eliminating bits that need ld...
66 # Check for available headers.
67 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
68 machine/endian.h machine/param.h sys/machine.h fp.h locale.h \
71 # GLIBCPP_CHECK_COMPILER_FEATURES
72 WFMT_FLAGS='-fdiagnostics-show-location=once'
73 SECTION_FLAGS='-ffunction-sections -fdata-sections'
75 AC_SUBST(SECTION_FLAGS)
76 GLIBCPP_CHECK_LINKER_FEATURES
77 # GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
78 # GLIBCPP_CHECK_MATH_SUPPORT
81 AC_DEFINE(HAVE_ATAN2F)
84 AC_DEFINE(HAVE_COPYSIGN)
85 AC_DEFINE(HAVE_COPYSIGNF)
90 AC_DEFINE(HAVE_FINITE)
91 AC_DEFINE(HAVE_FINITEF)
92 AC_DEFINE(HAVE_FLOORF)
94 AC_DEFINE(HAVE_FREXPF)
96 AC_DEFINE(HAVE_ISINFF)
98 AC_DEFINE(HAVE_ISNANF)
99 AC_DEFINE(HAVE_LDEXPF)
100 AC_DEFINE(HAVE_LOG10F)
102 AC_DEFINE(HAVE_MODFF)
104 AC_DEFINE(HAVE_SINCOS)
105 AC_DEFINE(HAVE_SINCOSF)
107 AC_DEFINE(HAVE_SINHF)
108 AC_DEFINE(HAVE_SQRTF)
110 AC_DEFINE(HAVE_TANHF)
112 # At some point, we should differentiate between architectures
113 # like x86, which have long double versions, and alpha/powerpc/etc.,
114 # which don't. For the time being, punt.
115 if test x"long_double_math_on_this_cpu" = x"yes"; then
116 AC_DEFINE(HAVE_ACOSL)
117 AC_DEFINE(HAVE_ASINL)
118 AC_DEFINE(HAVE_ATAN2L)
119 AC_DEFINE(HAVE_ATANL)
120 AC_DEFINE(HAVE_CEILL)
121 AC_DEFINE(HAVE_COPYSIGNL)
123 AC_DEFINE(HAVE_COSHL)
125 AC_DEFINE(HAVE_FABSL)
126 AC_DEFINE(HAVE_FINITEL)
127 AC_DEFINE(HAVE_FLOORL)
128 AC_DEFINE(HAVE_FMODL)
129 AC_DEFINE(HAVE_FREXPL)
130 AC_DEFINE(HAVE_ISINFL)
131 AC_DEFINE(HAVE_ISNANL)
132 AC_DEFINE(HAVE_LDEXPL)
133 AC_DEFINE(HAVE_LOG10L)
135 AC_DEFINE(HAVE_MODFL)
137 AC_DEFINE(HAVE_SINCOSL)
139 AC_DEFINE(HAVE_SINHL)
140 AC_DEFINE(HAVE_SQRTL)
142 AC_DEFINE(HAVE_TANHL)
144 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
145 GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
146 GLIBCPP_CHECK_WCHAR_T_SUPPORT
147 # GLIBCPP_CHECK_CTYPE_SUPPORT
148 ctype_include_dir="config/os/gnu-linux"
149 # GLIBCPP_CHECK_STDLIB_SUPPORT
150 AC_DEFINE(HAVE_STRTOF)
151 AC_DEFINE(HAVE_STRTOLD)
156 # We assume newlib. This lets us hard-code the functions we know
158 AC_DEFINE(HAVE_FINITE)
159 AC_DEFINE(HAVE_ISNAN)
160 AC_DEFINE(HAVE_ISNANF)
161 AC_DEFINE(HAVE_ISINF)
162 AC_DEFINE(HAVE_ISINFF)
164 ctype_include_dir="config/os/newlib"
165 os_include_dir="config/os/newlib"
167 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
168 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
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
182 # Check for available headers.
183 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
184 machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h])
186 GLIBCPP_CHECK_COMPILER_FEATURES
187 GLIBCPP_CHECK_LINKER_FEATURES
188 GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
189 GLIBCPP_CHECK_MATH_SUPPORT
190 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
191 GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
192 GLIBCPP_CHECK_WCHAR_T_SUPPORT
193 GLIBCPP_CHECK_CTYPE_SUPPORT
194 GLIBCPP_CHECK_STDLIB_SUPPORT
199 # Now that ctype is determined for all possible targets, we can do this...
200 AC_LINK_FILES($ctype_include_dir/bits/ctype_base.h, \
201 include/bits/ctype_base.h)
202 AC_LINK_FILES($ctype_include_dir/bits/ctype_inline.h, \
203 include/bits/ctype_inline.h)
204 AC_LINK_FILES($ctype_include_dir/bits/ctype_noninline.h, \
205 include/bits/ctype_noninline.h)
207 AM_CONDITIONAL(NULL_TARGET, test "$NULL_TARGET" = yes)
208 AM_CONDITIONAL(NATIVE, test "$NATIVE" = yes || test "$NULL_TARGET" = yes)
209 AM_CONDITIONAL(USE_LIBDIR, test -z "$with_cross_host")
210 AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
215 if test "${multilib}" = "yes"; then
216 multilib_arg="--enable-multilib"
222 # Generate the various Makefiles, include files, and scripts.
224 # This helps subvert libstdcxx_interface, as calculated by devo/config.if
225 # Needed so that g++ can find the correct include subdir automatically.
228 # Check for the interface version number for specifying where header
229 # files are installed, if a version number is provided.
230 AC_MSG_CHECKING([for interface version number])
231 libstdcxx_interface=$INTERFACE
232 AC_MSG_RESULT($libstdcxx_interface)
233 AC_SUBST(libstdcxx_interface)
235 # Process the option --with-gxx-include-dir=<path to include-files directory>
236 AC_MSG_CHECKING([for --with-gxx-include-dir])
237 AC_ARG_WITH(gxx-include-dir,
238 [ --with-gxx-include-dir the installation directory for include files],
239 [case "${withval}" in
241 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
248 gxx_include_dir=${withval}
250 esac], [gxx_include_dir=no])
251 AC_MSG_RESULT($gxx_include_dir)
252 AC_SUBST(gxx_include_dir)
253 AM_CONDITIONAL(GXX_INCLUDE_DIR, test x${gxx_include_dir} != xno)
255 # Process the option "--enable-version-specific-runtime-libs"
256 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
257 AC_ARG_ENABLE(version-specific-runtime-libs,
258 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
259 [ version_specific_libs=yes
260 # Need the gcc compiler version to know where to install libraries
261 # and header files if --enable-version-specific-runtime-libs option
264 gcc_tmp=`grep version_string ${srcdir}/../gcc/version.c | awk '{print $6}'`
265 gcc_num=`echo ${gcc_tmp} | sed 's/\"//g'`
266 #gcc_date=`grep version_string ${srcdir}/../gcc/version.c | awk '{print $7}'`
267 #gcc_version=$gcc_num-$gcc_date
270 AC_SUBST(gcc_version)
271 ],version_specific_libs=no)
272 AC_MSG_RESULT($version_specific_libs)
273 if test x${version_specific_libs} = xyes; then
274 AM_CONDITIONAL(VERSION_SPECIFIC_LIBS, test x${version_specific_libs} = xyes)
275 AC_MSG_WARN(version specific directory is: $gcc_version)
278 # We have to install all the generated or linked includes files
279 # specified as build_headers in src/Makefile.am in a target-dependent
280 # place, or else multiple installs for different compilers will
281 # overwrite these files.
282 gxx_target_include_dir='$(exec_prefix)/$(target_alias)/include/g++-$(libstdcxx_interface)'
283 AC_SUBST(gxx_target_include_dir)
286 # Export all the include and flag information to makefiles.
287 GLIBCPP_EXPORT_INCLUDES
290 # This should be done by mkincludedir, but hack around it now.
292 echo "checking for $blddir/include"
294 if test ! -d "$blddir/include"; then
295 mkdir "$blddir/include"
298 # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am
299 # so that multilib installs will end up installed in the correct
300 # place. To work around this not being passed down from config-ml.in
301 # -> top_srcdir/Makefile.am -> top_srcdir/src/Makefile.am, manually
303 AC_OUTPUT(tests_flags mkcheck Makefile src/Makefile libmath/Makefile libio/Makefile libsupc++/Makefile,
304 [if test -n "$CONFIG_FILES"; then
305 ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
306 grep '^MULTISUBDIR =' Makefile >> src/Makefile
314 with_multisubdir=${with_multisubdir}
315 ac_configure_args="${multilib_arg} ${ac_configure_args}"
316 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
317 glibcpp_basedir=${glibcpp_basedir}
323 # Generate bits/c++config.h
324 # NB: This must be the first generated file as others include it. . .
325 $srcdir/mkc++config $blddir $srcdir
327 # Generate bits/std_limits.h and src/limitsMEMBERS.cc
328 if test ! -f stamp-limits; then
329 $srcdir/mknumeric_limits $blddir $srcdir $xcompiling
330 if test ! -f include/bits/std_limits.h; then
331 echo "mknumeric_limits failed to execute properly: exiting"
339 # Sanity checking & User-visible messages.
340 # Checks down here, otherwise they get scrolled off before
341 # the user will notice.
343 # Trying to get more people to read documentation. Possibly remove
344 # check and warn all the time. There is no "informational" AC_MSG_
345 # macro, so these are going to be printed even when --quiet/--silent
347 if test ! -f stamp-sanity-warned; then
348 touch stamp-sanity-warned
350 echo "Please make certain that you read the installation information here:"
351 echo " faster => ${srcdir}/docs/install.html"
352 echo " slower => <URL:http://sources.redhat.com/libstdc++/install.html>"
354 echo "and the configuration information here:"
355 echo " faster => ${srcdir}/docs/configopts.html"
356 echo " slower => <URL:http://sources.redhat.com/libstdc++/configopts.html>"
358 echo "before proceeding with ${_cv_gnu_make_command}."