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$_cv_gnu_make_command" = "x"; then
23 AC_MSG_ERROR([GNU make not found. Please install it or correct your path.])
25 AM_CONFIG_HEADER(config.h)
27 # Check for c++ or library specific bits that don't require linking.
28 GLIBCPP_CHECK_COMPILER_VERSION
31 # Enable all the crazy c++ stuff.
34 GLIBCPP_ENABLE_LONG_LONG(yes)
35 GLIBCPP_ENABLE_SHADOW(no)
36 GLIBCPP_ENABLE_THREADS
37 #GLIBCPP_ENABLE_RELIBGCC([../..])
38 GLIBCPP_ENABLE_CXX_FLAGS([none])
41 if test -n "$with_cross_host"; then
43 # We are being configured with a cross compiler. AC_REPLACE_FUNCS
44 # may not work correctly, because the compiler may not be able to
49 # If Canadian cross, then don't pick up tools from the build
51 if test "$build" != "$with_cross_host"; then
59 case "$target_alias" in
61 # Configure for Microsoft Windows CE, or whatever they are
62 # currently calling it.
63 AC_DEFINE(HAVE_FLOAT_H)
65 AC_DEFINE(HAVE__FINITE)
66 AC_DEFINE(HAVE__ISNAN)
67 AC_DEFINE(HAVE__COPYSIGN)
68 AC_DEFINE(HAVE__FPCLASS)
71 ctype_include_dir="config/wince"
72 AC_SUBST(ctype_include_dir)
74 AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
76 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
77 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
80 # We assume newlib. This lets us hard-code the functions we know
82 AC_DEFINE(HAVE_FINITE)
84 AC_DEFINE(HAVE_ISNANF)
86 AC_DEFINE(HAVE_ISINFF)
88 ctype_include_dir="config/newlib"
89 AC_SUBST(ctype_include_dir)
91 AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T)
93 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
94 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
95 # need to ceck for faster f versions of math functions, ie sinf?
100 # We are being configured natively. We can do more elaborate tests
101 # that include AC_TRY_COMPILE now, as the linker is assumed to be
109 # Check for available headers.
110 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
111 machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h])
113 GLIBCPP_CHECK_COMPILER_FEATURES
114 GLIBCPP_CHECK_LINKER_FEATURES
115 GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
116 GLIBCPP_CHECK_MATH_SUPPORT
117 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
118 GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
119 GLIBCPP_CHECK_WCHAR_T_SUPPORT
125 AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
126 AM_CONDITIONAL(NULL_TARGET, test "$NULL_TARGET" = yes)
127 AM_CONDITIONAL(NATIVE, test "$NATIVE" = yes || test "$NULL_TARGET" = yes)
128 AM_CONDITIONAL(USE_LIBDIR, test -z "$with_cross_host")
133 if test "${multilib}" = "yes"; then
134 multilib_arg="--enable-multilib"
140 # Generate the various Makefiles, include files, and scripts.
142 # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am
143 # so that multilib installs will end up installed in the correct
144 # place. To work around this not being passed down from config-ml.in
145 # -> top_srcdir/Makefile.am -> top_srcdir/src/Makefile.am, manually
148 AC_OUTPUT(mkcheck Makefile src/Makefile math/Makefile libio/Makefile,
149 [if test -n "$CONFIG_FILES"; then
150 ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
151 grep '^MULTISUBDIR =' Makefile >> src/Makefile
156 with_multisubdir=${with_multisubdir}
157 ac_configure_args="${multilib_arg} ${ac_configure_args}"
158 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
159 glibcpp_basedir=${glibcpp_basedir}
166 # Generate bits/c++config.h
167 # NB: This must be the first generated file as others include it. . .
168 AC_OUTPUT_COMMANDS([$srcdir/mkc++config $blddir $srcdir])
170 # Generate bits/std_limits.h and src/limitsMEMBERS.cc
171 AC_OUTPUT_COMMANDS([$srcdir/mknumeric_limits $blddir $srcdir $xcompiling])
174 # Sanity checking & User-visible messages.
175 # Checks down here, otherwise they get scrolled off before
176 # the user will notice.
177 if test "$enable_namespaces" = "yes" && test "$enable_libgcc_rebuild" = "no"
179 AC_MSG_WARN([libgcc.a will not match mangled symbols unless it is rebuilt])
181 if test "$enable_namespaces" = "no" && test "$enable_libgcc_rebuild" != "no"
183 # Other things besides namespaces can make this true as well, but none
184 # of them are done automatically... yet
185 AC_MSG_WARN([no point in rebuilding libgcc.a if namespaces aren't used])
188 # Trying to get more people to read documentation. Possibly remove
189 # check and warn all the time. There is no "informational" AC_MSG_
190 # macro, so these are going to be printed even when --quiet/--silent
192 if test ! -f stamp-sanity-warned; then
193 touch stamp-sanity-warned
195 echo "Please make certain that you read the installation information here:"
196 echo " faster => ${srcdir}/docs/install.html"
197 echo " slower => <URL:http://sources.redhat.com/libstdc++/install.html>"
199 echo "and the configuration information here:"
200 echo " faster => ${srcdir}/docs/configopts.html"
201 echo " slower => <URL:http://sources.redhat.com/libstdc++/configopts.html>"
203 echo "before proceeding with ${_cv_gnu_make_command}."