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])
21 GLIBCPP_CHECK_GNU_MAKE
22 if test "x$_cv_gnu_make_command" = "x"; then
23 AC_MSG_ERROR([GNU make not found. Please install it or correct your path.])
25 AM_CONFIG_HEADER(config.h)
27 # Check for c++ or library specific bits that don't require linking.
28 GLIBCPP_CHECK_COMPILER_VERSION
34 # Enable all the crazy c++ stuff.
35 GLIBCPP_ENABLE_DEBUG($USE_MAINTAINER_MODE)
37 GLIBCPP_ENABLE_LONG_LONG(yes)
38 GLIBCPP_ENABLE_SHADOW(no)
39 GLIBCPP_ENABLE_THREADS
40 GLIBCPP_ENABLE_ATOMICITY
41 #GLIBCPP_ENABLE_RELIBGCC([../..])
42 GLIBCPP_ENABLE_CXX_FLAGS([none])
45 if test -n "$with_cross_host"; then
47 # We are being configured with a cross compiler. AC_REPLACE_FUNCS
48 # may not work correctly, because the compiler may not be able to
53 # If Canadian cross, then don't pick up tools from the build
55 if test "$build" != "$with_cross_host"; then
63 case "$target_alias" in
65 # Configure for Microsoft Windows CE, or whatever they are
66 # currently calling it.
67 AC_DEFINE(HAVE_FLOAT_H)
69 AC_DEFINE(HAVE__FINITE)
70 AC_DEFINE(HAVE__ISNAN)
71 AC_DEFINE(HAVE__COPYSIGN)
72 AC_DEFINE(HAVE__FPCLASS)
75 ctype_include_dir="config/os/wince"
76 AC_LINK_FILES($ctype_include_dir/bits/ctype_base.h, bits/ctype_base.h)
77 AC_LINK_FILES($ctype_include_dir/bits/ctype_inline.h, \
79 AC_LINK_FILES($ctype_include_dir/bits/ctype_noninline.h, \
80 bits/ctype_noninline.h)
83 AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
85 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
86 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
89 # We assume newlib. This lets us hard-code the functions we know
91 AC_DEFINE(HAVE_FINITE)
93 AC_DEFINE(HAVE_ISNANF)
95 AC_DEFINE(HAVE_ISINFF)
97 ctype_include_dir="config/os/newlib"
98 AC_LINK_FILES($ctype_include_dir/bits/ctype_base.h, bits/ctype_base.h)
99 AC_LINK_FILES($ctype_include_dir/bits/ctype_inline.h, \
101 AC_LINK_FILES($ctype_include_dir/bits/ctype_noninline.h, \
102 bits/ctype_noninline.h)
104 AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
106 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
107 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
108 # need to ceck for faster f versions of math functions, ie sinf?
113 # We are being configured natively. We can do more elaborate tests
114 # that include AC_TRY_COMPILE now, as the linker is assumed to be
122 # Check for available headers.
123 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
124 machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h])
126 GLIBCPP_CHECK_COMPILER_FEATURES
127 GLIBCPP_CHECK_LINKER_FEATURES
128 GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
129 GLIBCPP_CHECK_MATH_SUPPORT
130 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
131 GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
133 GLIBCPP_CHECK_WCHAR_T_SUPPORT
139 AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
140 AM_CONDITIONAL(NULL_TARGET, test "$NULL_TARGET" = yes)
141 AM_CONDITIONAL(NATIVE, test "$NATIVE" = yes || test "$NULL_TARGET" = yes)
142 AM_CONDITIONAL(USE_LIBDIR, test -z "$with_cross_host")
146 if test "${multilib}" = "yes"; then
147 multilib_arg="--enable-multilib"
153 # Generate the various Makefiles, include files, and scripts.
155 # Export all the include and flag information to makefiles.
156 GLIBCPP_EXPORT_INCLUDES
159 # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am
160 # so that multilib installs will end up installed in the correct
161 # place. To work around this not being passed down from config-ml.in
162 # -> top_srcdir/Makefile.am -> top_srcdir/src/Makefile.am, manually
164 AC_OUTPUT(mkcheck Makefile src/Makefile libmath/Makefile libio/Makefile libsupc++/Makefile,
165 [if test -n "$CONFIG_FILES"; then
166 ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
167 grep '^MULTISUBDIR =' Makefile >> src/Makefile
172 with_multisubdir=${with_multisubdir}
173 ac_configure_args="${multilib_arg} ${ac_configure_args}"
174 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
175 glibcpp_basedir=${glibcpp_basedir}
182 # Generate bits/c++config.h
183 # NB: This must be the first generated file as others include it. . .
184 AC_OUTPUT_COMMANDS([$srcdir/mkc++config $blddir $srcdir])
186 # Generate bits/std_limits.h and src/limitsMEMBERS.cc
187 AC_OUTPUT_COMMANDS([$srcdir/mknumeric_limits $blddir $srcdir $xcompiling])
190 # Sanity checking & User-visible messages.
191 # Checks down here, otherwise they get scrolled off before
192 # the user will notice.
193 if test "$enable_namespaces" = "yes" && test "$enable_libgcc_rebuild" = "no"
195 AC_MSG_WARN([libgcc.a will not match mangled symbols unless it is rebuilt])
197 if test "$enable_namespaces" = "no" && test "$enable_libgcc_rebuild" != "no"
199 # Other things besides namespaces can make this true as well, but none
200 # of them are done automatically... yet
201 AC_MSG_WARN([no point in rebuilding libgcc.a if namespaces aren't used])
204 # Trying to get more people to read documentation. Possibly remove
205 # check and warn all the time. There is no "informational" AC_MSG_
206 # macro, so these are going to be printed even when --quiet/--silent
208 if test ! -f stamp-sanity-warned; then
209 touch stamp-sanity-warned
211 echo "Please make certain that you read the installation information here:"
212 echo " faster => ${srcdir}/docs/install.html"
213 echo " slower => <URL:http://sources.redhat.com/libstdc++/install.html>"
215 echo "and the configuration information here:"
216 echo " faster => ${srcdir}/docs/configopts.html"
217 echo " slower => <URL:http://sources.redhat.com/libstdc++/configopts.html>"
219 echo "before proceeding with ${_cv_gnu_make_command}."