1 # Process this file with autoconf to produce a configure script, like so:
2 # aclocal, autoconf, autoheader, automake
7 # When building with srcdir == objdir, links to the source files will
8 # be created in directories within the target_subdir. We have to
9 # adjust toplevel_srcdir accordingly, so that configure finds
10 # install-sh and other auxiliary files that live in the top-level
12 if test "${srcdir}" = "."; then
13 if test -z "${with_target_subdir}"; then
14 toplevel_srcdir="\${top_srcdir}/.."
17 if test "${with_target_subdir}" != "."; then
18 toplevel_srcdir="\${top_srcdir}/${with_multisrctop}../.."
19 auxdir="${srcdir}/${with_multisrctop}../.."
21 toplevel_srcdir="\${top_srcdir}/${with_multisrctop}.."
22 auxdir="${srcdir}/${with_multisrctop}.."
26 toplevel_srcdir="\${top_srcdir}/.."
29 AC_CONFIG_AUX_DIR($auxdir)
30 AC_SUBST(toplevel_srcdir)
32 dnl This is here just to satisfy automake.
33 ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)])
35 # Gets and sets build, host, target, *_vendor, *_cpu, *_os, etc.
38 # We use these options to decide which functions to include.
39 AC_ARG_WITH(target-subdir,
40 [ --with-target-subdir=SUBDIR
41 configuring in a subdirectory])
42 AC_ARG_WITH(cross-host,
43 [ --with-cross-host=HOST configuring with a cross compiler])
45 # Runs configure.host and configure.target. Have to run this before
46 # the GLIBCPP_ENABLE_* macros below.
51 AC_SUBST(enable_shared)
52 AC_SUBST(enable_static)
53 GLIBCPP_CHECK_GNU_MAKE
54 if test "x$_cv_gnu_make_command" = "x"; then
55 AC_MSG_ERROR([GNU make not found. Please install it or correct your path.])
57 AM_CONFIG_HEADER(config.h)
59 # Check for c++ or library specific bits that don't require linking.
60 GLIBCPP_CHECK_COMPILER_VERSION
62 # Enable all the crazy c++ stuff. C_MBCHAR must come early.
63 GLIBCPP_ENABLE_DEBUG($USE_MAINTAINER_MODE)
65 GLIBCPP_ENABLE_CLOCALE
66 GLIBCPP_ENABLE_C_MBCHAR([yes])
67 GLIBCPP_ENABLE_LONG_LONG([no])
68 GLIBCPP_ENABLE_CHEADERS([c_std])
69 GLIBCPP_ENABLE_THREADS
70 GLIBCPP_ENABLE_CXX_FLAGS([none])
72 if test -n "$with_cross_host"; then
74 # We are being configured with a cross compiler. AC_REPLACE_FUNCS
75 # may not work correctly, because the compiler may not be able to
80 # If Canadian cross, then don't pick up tools from the build
82 if test x"$build" != x"$with_cross_host" && x"$build" != x"$target"; then
90 case "$target_alias" in
92 # Construct linux crosses by hand, eliminating bits that need ld...
93 # Check for available headers.
94 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
95 machine/endian.h machine/param.h sys/machine.h fp.h locale.h \
98 # GLIBCPP_CHECK_COMPILER_FEATURES
99 SECTION_FLAGS='-ffunction-sections -fdata-sections'
100 AC_SUBST(SECTION_FLAGS)
101 GLIBCPP_CHECK_LINKER_FEATURES
102 # GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
103 # GLIBCPP_CHECK_MATH_SUPPORT
104 AC_DEFINE(HAVE_ACOSF)
105 AC_DEFINE(HAVE_ASINF)
106 AC_DEFINE(HAVE_ATAN2F)
107 AC_DEFINE(HAVE_ATANF)
108 AC_DEFINE(HAVE_CEILF)
109 AC_DEFINE(HAVE_COPYSIGN)
110 AC_DEFINE(HAVE_COPYSIGNF)
112 AC_DEFINE(HAVE_COSHF)
114 AC_DEFINE(HAVE_FABSF)
115 AC_DEFINE(HAVE_FINITE)
116 AC_DEFINE(HAVE_FINITEF)
117 AC_DEFINE(HAVE_FLOORF)
118 AC_DEFINE(HAVE_FMODF)
119 AC_DEFINE(HAVE_FREXPF)
120 AC_DEFINE(HAVE_ISINF)
121 AC_DEFINE(HAVE_ISINFF)
122 AC_DEFINE(HAVE_ISNAN)
123 AC_DEFINE(HAVE_ISNANF)
124 AC_DEFINE(HAVE_LDEXPF)
125 AC_DEFINE(HAVE_LOG10F)
127 AC_DEFINE(HAVE_MODFF)
129 AC_DEFINE(HAVE_SINCOS)
130 AC_DEFINE(HAVE_SINCOSF)
132 AC_DEFINE(HAVE_SINHF)
133 AC_DEFINE(HAVE_SQRTF)
135 AC_DEFINE(HAVE_TANHF)
137 # At some point, we should differentiate between architectures
138 # like x86, which have long double versions, and alpha/powerpc/etc.,
139 # which don't. For the time being, punt.
140 if test x"long_double_math_on_this_cpu" = x"yes"; then
141 AC_DEFINE(HAVE_ACOSL)
142 AC_DEFINE(HAVE_ASINL)
143 AC_DEFINE(HAVE_ATAN2L)
144 AC_DEFINE(HAVE_ATANL)
145 AC_DEFINE(HAVE_CEILL)
146 AC_DEFINE(HAVE_COPYSIGNL)
148 AC_DEFINE(HAVE_COSHL)
150 AC_DEFINE(HAVE_FABSL)
151 AC_DEFINE(HAVE_FINITEL)
152 AC_DEFINE(HAVE_FLOORL)
153 AC_DEFINE(HAVE_FMODL)
154 AC_DEFINE(HAVE_FREXPL)
155 AC_DEFINE(HAVE_ISINFL)
156 AC_DEFINE(HAVE_ISNANL)
157 AC_DEFINE(HAVE_LDEXPL)
158 AC_DEFINE(HAVE_LOG10L)
160 AC_DEFINE(HAVE_MODFL)
162 AC_DEFINE(HAVE_SINCOSL)
164 AC_DEFINE(HAVE_SINHL)
165 AC_DEFINE(HAVE_SQRTL)
167 AC_DEFINE(HAVE_TANHL)
169 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
170 GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
171 GLIBCPP_CHECK_WCHAR_T_SUPPORT
172 os_include_dir="config/os/gnu-linux"
173 # GLIBCPP_CHECK_STDLIB_SUPPORT
174 AC_DEFINE(HAVE_STRTOF)
175 AC_DEFINE(HAVE_STRTOLD)
180 # We assume newlib. This lets us hard-code the functions we know
182 AC_DEFINE(HAVE_FINITE)
183 AC_DEFINE(HAVE_ISNAN)
184 AC_DEFINE(HAVE_ISNANF)
185 AC_DEFINE(HAVE_ISINF)
186 AC_DEFINE(HAVE_ISINFF)
188 os_include_dir="config/os/newlib"
190 AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX)
191 AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX)
192 # need to check for faster f versions of math functions, ie sinf?
197 # We are being configured natively. We can do more elaborate tests
198 # that include AC_TRY_COMPILE now, as the linker is assumed to be
205 # Check for available headers.
206 AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
207 machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h])
209 GLIBCPP_CHECK_COMPILER_FEATURES
210 GLIBCPP_CHECK_LINKER_FEATURES
211 GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
212 GLIBCPP_CHECK_MATH_SUPPORT
213 GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
214 GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT
215 GLIBCPP_CHECK_WCHAR_T_SUPPORT
216 GLIBCPP_CHECK_STDLIB_SUPPORT
220 ], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);],
221 [AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ])])
226 # Now that ctype is determined for all possible targets, we can do this...
227 AC_LINK_FILES($os_include_dir/bits/ctype_base.h, \
228 include/bits/ctype_base.h)
229 AC_LINK_FILES($os_include_dir/bits/ctype_inline.h, \
230 include/bits/ctype_inline.h)
231 AC_LINK_FILES($os_include_dir/bits/ctype_noninline.h, \
232 include/bits/ctype_noninline.h)
233 AC_LINK_FILES($ATOMICITYH/bits/atomicity.h, include/bits/atomicity.h)
235 AM_CONDITIONAL(NULL_TARGET, test "$NULL_TARGET" = yes)
236 AM_CONDITIONAL(NATIVE, test "$NATIVE" = yes || test "$NULL_TARGET" = yes)
237 AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
242 if test "${multilib}" = "yes"; then
243 multilib_arg="--enable-multilib"
249 # Generate the various Makefiles, include files, and scripts.
251 # Needed so that g++ can find the correct include subdir automatically.
254 # Export all the install information
255 GLIBCPP_EXPORT_INSTALL_INFO
257 # Export all the include and flag information to makefiles.
258 GLIBCPP_EXPORT_INCLUDES
261 # This should be done by mkincludedir, but hack around it now.
263 echo "checking for $blddir/include"
265 if test ! -d "$blddir/include"; then
266 mkdir "$blddir/include"
269 # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am
270 # and libsupc++/Makefile.am so that multilib installs will end up
271 # installed in the correct place. To work around this not being passed
272 # down from config-ml.in -> top_srcdir/Makefile.am ->
273 # top_srcdir/{src,libsupc++}/Makefile.am, manually append it here.
274 AC_OUTPUT(tests_flags mkcheck Makefile src/Makefile libmath/Makefile libio/Makefile libsupc++/Makefile,
275 [if test -n "$CONFIG_FILES"; then
276 ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
277 grep '^MULTISUBDIR =' Makefile >> src/Makefile
278 grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile
286 with_multisubdir=${with_multisubdir}
287 ac_configure_args="${multilib_arg} ${ac_configure_args}"
288 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
289 glibcpp_basedir=${glibcpp_basedir}
295 # Generate bits/c++config.h
296 # NB: This must be the first generated file as others include it. . .
297 $srcdir/mkc++config $blddir $srcdir
299 # Generate bits/std_limits.h and src/limitsMEMBERS.cc
300 if test ! -f stamp-limits; then
301 $srcdir/mknumeric_limits $blddir $srcdir $xcompiling
302 if test ! -f include/bits/std_limits.h; then
303 echo "mknumeric_limits failed to execute properly: exiting"
311 # Sanity checking & User-visible messages.
312 # Checks down here, otherwise they get scrolled off before
313 # the user will notice.
315 # Trying to get more people to read documentation. Possibly remove
316 # check and warn all the time. There is no "informational" AC_MSG_
317 # macro, so these are going to be printed even when --quiet/--silent
319 if test ! -f stamp-sanity-warned; then
320 touch stamp-sanity-warned
322 echo "Please make certain that you read the installation information here:"
323 echo " faster => ${srcdir}/docs/install.html"
324 echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/install.html>"
326 echo "and the configuration information here:"
327 echo " faster => ${srcdir}/docs/configopts.html"
328 echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/configopts.html>"
330 echo "before proceeding with ${_cv_gnu_make_command}."