1 # Process this file with autoreconf to produce a configure script.
4 AC_INIT(package-unused, version-unused,, libstdc++)
5 AC_CONFIG_SRCDIR(src/ios.cc)
6 AC_CONFIG_HEADER(config.h)
8 # This works around the fact that libtool configuration may change LD
9 # for this particular configuration, but some shells, instead of
10 # keeping the changes in LD private, export them just because LD is
11 # exported. Only used at the end of this file.
12 ### am handles this now? ORIGINAL_LD_FOR_MULTILIBS=$LD
14 # For libtool versioning info, format is CURRENT:REVISION:AGE
15 libtool_VERSION=6:16:0
16 AC_SUBST(libtool_VERSION)
18 # Find the rest of the source tree framework.
19 AM_ENABLE_MULTILIB(, ..)
21 # Gets build, host, target, *_vendor, *_cpu, *_os, etc.
23 # You will slowly go insane if you do not grok the following fact: when
24 # building v3 as part of the compiler, the top-level /target/ becomes the
25 # library's /host/. configure then causes --target to default to --host,
26 # exactly like any other package using autoconf. Therefore, 'target' and
27 # 'host' will always be the same. This makes sense both for native and
28 # cross compilers, just think about it for a little while. :-)
30 # Also, if v3 is being configured as part of a cross compiler, the top-level
31 # configure script will pass the "real" host as $with_cross_host.
33 # Do not delete or change the following two lines. For why, see
34 # http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
36 target_alias=${target_alias-$host_alias}
38 # Handy for debugging:
39 #AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5
41 if test "$build" != "$host"; then
42 # We are being configured with some form of cross compiler.
43 GLIBCXX_IS_NATIVE=false
44 case "$host","$target" in
45 # Darwin crosses can use the host system's libraries and headers,
46 # because of the fat library support. Of course, it must be the
47 # same version of Darwin on both sides. Allow the user to
48 # just say --target=foo-darwin without a version number to mean
49 # "the version on this system".
50 *-*-darwin*,*-*-darwin*)
51 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
52 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
53 if test $hostos = $targetos -o $targetos = darwin ; then
54 GLIBCXX_IS_NATIVE=true
63 GLIBCXX_IS_NATIVE=true
66 # Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the
67 # following is magically included in AUTOMAKE_OPTIONS in each Makefile.am.
68 # 1.x: minimum required version
69 # no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch
70 # of other PACKAGE_* variables will, however, and there's nothing
71 # we can do about that; they come from AC_INIT).
72 # foreign: we don't follow the normal rules for GNU packages (no COPYING
73 # file in the top srcdir, etc, etc), so stop complaining.
74 # no-dependencies: turns off auto dependency generation (just for now)
75 # no-dist: we don't want 'dist' and related rules.
76 # -Wall: turns on all automake warnings...
77 # -Wno-portability: ...except this one, since GNU make is now required.
78 AM_INIT_AUTOMAKE([1.9.3 no-define foreign no-dependencies no-dist -Wall -Wno-portability -Wno-override])
79 AH_TEMPLATE(PACKAGE, [Name of package])
80 AH_TEMPLATE(VERSION, [Version number of package])
82 # -fno-builtin must be present here so that a non-conflicting form of
83 # std::exit can be guessed by AC_PROG_CXX, and used in later tests.
85 save_CXXFLAGS="$CXXFLAGS"
86 CXXFLAGS="$CXXFLAGS -fno-builtin"
89 CXXFLAGS="$save_CXXFLAGS"
91 # Runs configure.host, and assorted other critical bits. Sets
92 # up critical shell variables.
95 if test "x${with_newlib}" != "xyes"; then
100 AC_SUBST(enable_shared)
101 AC_SUBST(enable_static)
103 # Eliminate -lstdc++ addition to postdeps for cross compiles.
104 postdeps_CXX=`echo " $postdeps_CXX " | sed 's, -lstdc++ ,,g'`
106 # Possibly disable most of the library.
107 ## TODO: Consider skipping unncessary tests altogether in this case, rather
108 ## than just ignoring the results. Faster /and/ more correct, win win.
109 GLIBCXX_ENABLE_HOSTED
111 # Enable compiler support that doesn't require linking.
112 GLIBCXX_ENABLE_SJLJ_EXCEPTIONS
113 GLIBCXX_ENABLE_PCH($is_hosted)
114 GLIBCXX_ENABLE_THREADS
115 GLIBCXX_ENABLE_ATOMIC_BUILTINS
116 GLIBCXX_ENABLE_DECIMAL_FLOAT
118 # Checks for compiler support that doesn't require linking.
119 GLIBCXX_CHECK_COMPILER_FEATURES
121 # Enable all the variable C++ runtime options that don't require linking.
122 GLIBCXX_ENABLE_CSTDIO
123 GLIBCXX_ENABLE_CLOCALE
124 GLIBCXX_ENABLE_ALLOCATOR
125 GLIBCXX_ENABLE_CHEADERS($c_model) dnl c_model from configure.host
126 GLIBCXX_ENABLE_LONG_LONG([yes])
127 GLIBCXX_ENABLE_WCHAR_T([yes])
128 GLIBCXX_ENABLE_C99([yes])
129 GLIBCXX_ENABLE_CONCEPT_CHECKS([no])
130 GLIBCXX_ENABLE_DEBUG_FLAGS(["-g3 -O0"])
131 GLIBCXX_ENABLE_DEBUG([no])
132 GLIBCXX_ENABLE_PARALLEL([yes])
133 GLIBCXX_ENABLE_CXX_FLAGS
134 GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING([no])
135 GLIBCXX_ENABLE_EXTERN_TEMPLATE([yes])
137 # Checks for operating systems support that doesn't require linking.
138 GLIBCXX_CHECK_SYSTEM_ERROR
140 # For the streamoff typedef.
141 GLIBCXX_CHECK_INT64_T
146 # For showmanyc_helper().
147 AC_CHECK_HEADERS(sys/ioctl.h sys/filio.h)
149 GLIBCXX_CHECK_S_ISREG_OR_S_IFREG
152 AC_CHECK_HEADERS(sys/uio.h)
155 # For C99 support to TR1.
156 GLIBCXX_CHECK_C99_TR1
158 # For the EOF, SEEK_CUR, and SEEK_END integer constants.
159 GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS
161 # For gettimeofday support.
162 GLIBCXX_CHECK_GETTIMEOFDAY
164 # For clock_gettime, nanosleep and sched_yield support.
165 # NB: The default is [no], because otherwise it requires linking.
166 GLIBCXX_ENABLE_LIBSTDCXX_TIME([no])
168 # For gthread support
169 GLIBCXX_CHECK_GTHREADS
173 # Check for available headers.
174 AC_CHECK_HEADERS([endian.h execinfo.h float.h fp.h ieeefp.h inttypes.h \
175 locale.h machine/endian.h machine/param.h nan.h stdint.h stdlib.h string.h \
176 strings.h sys/ipc.h sys/isa_defs.h sys/machine.h sys/param.h \
177 sys/resource.h sys/sem.h sys/stat.h sys/time.h sys/types.h unistd.h \
180 # Only do link tests if native. Else, hardcode.
181 if $GLIBCXX_IS_NATIVE; then
183 # We can do more elaborate tests that assume a working linker.
186 GLIBCXX_CHECK_LINKER_FEATURES
187 GLIBCXX_CHECK_MATH_SUPPORT
188 GLIBCXX_CHECK_STDLIB_SUPPORT
190 # For /dev/random and /dev/urandom for TR1.
191 GLIBCXX_CHECK_RANDOM_TR1
201 # This lets us hard-code the functionality we know we'll have in the cross
202 # target environment. "Let" is a sugar-coated word placed on an especially
203 # dull and tedious hack, actually.
205 # Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros
206 # that involve linking, can't be used:
207 # "cannot open sim-crt0.o"
208 # "cannot open crt0.o"
209 # etc. All this is because there currently exists no unified, consistent
210 # way for top level CC information to be passed down to target directories:
211 # newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc.
212 # When all of that is done, all of this hokey, excessive AC_DEFINE junk for
213 # crosses can be removed.
215 # If Canadian cross, then don't pick up tools from the build directory.
216 # Used only in GLIBCXX_EXPORT_INCLUDES.
217 if test -n "$with_cross_host" &&
218 test x"$build_alias" != x"$with_cross_host" &&
219 test x"$build" != x"$target";
226 # Construct crosses by hand, eliminating bits that need ld...
227 # GLIBCXX_CHECK_MATH_SUPPORT
229 # First, test for "known" system libraries. We may be using newlib even
230 # on a hosted environment.
231 if test "x${with_newlib}" = "xyes"; then
232 os_include_dir="os/newlib"
233 AC_DEFINE(HAVE_HYPOT)
235 # GLIBCXX_CHECK_STDLIB_SUPPORT
236 AC_DEFINE(HAVE_STRTOF)
238 AC_DEFINE(HAVE_ACOSF)
239 AC_DEFINE(HAVE_ASINF)
240 AC_DEFINE(HAVE_ATAN2F)
241 AC_DEFINE(HAVE_ATANF)
242 AC_DEFINE(HAVE_CEILF)
244 AC_DEFINE(HAVE_COSHF)
246 AC_DEFINE(HAVE_FABSF)
247 AC_DEFINE(HAVE_FLOORF)
248 AC_DEFINE(HAVE_FMODF)
249 AC_DEFINE(HAVE_FREXPF)
250 AC_DEFINE(HAVE_LDEXPF)
251 AC_DEFINE(HAVE_LOG10F)
253 AC_DEFINE(HAVE_MODFF)
256 AC_DEFINE(HAVE_SINHF)
257 AC_DEFINE(HAVE_SQRTF)
259 AC_DEFINE(HAVE_TANHF)
261 AC_DEFINE(HAVE_ICONV)
266 # At some point, we should differentiate between architectures
267 # like x86, which have long double versions, and alpha/powerpc/etc.,
268 # which don't. For the time being, punt.
269 if test x"long_double_math_on_this_cpu" = x"yes"; then
270 AC_DEFINE(HAVE_ACOSL)
271 AC_DEFINE(HAVE_ASINL)
272 AC_DEFINE(HAVE_ATAN2L)
273 AC_DEFINE(HAVE_ATANL)
274 AC_DEFINE(HAVE_CEILL)
276 AC_DEFINE(HAVE_COSHL)
278 AC_DEFINE(HAVE_FABSL)
279 AC_DEFINE(HAVE_FLOORL)
280 AC_DEFINE(HAVE_FMODL)
281 AC_DEFINE(HAVE_FREXPL)
282 AC_DEFINE(HAVE_LDEXPL)
283 AC_DEFINE(HAVE_LOG10L)
285 AC_DEFINE(HAVE_MODFL)
287 AC_DEFINE(HAVE_SINCOSL)
289 AC_DEFINE(HAVE_SINHL)
290 AC_DEFINE(HAVE_SQRTL)
292 AC_DEFINE(HAVE_TANHL)
296 # Check for _Unwind_GetIPInfo.
297 GCC_CHECK_UNWIND_GETIPINFO
300 GCC_LINUX_FUTEX([AC_DEFINE(HAVE_LINUX_FUTEX, 1, [Define if futex syscall is available.])])
302 GCC_HEADER_STDINT(include/gstdint.h)
304 # This depends on GLIBCXX CHECK_LINKER_FEATURES, but without it assumes no.
305 GLIBCXX_ENABLE_SYMVERS([yes])
306 GLIBCXX_ENABLE_VISIBILITY([yes])
310 powerpc*-*-linux* | \
315 #if !defined __LONG_DOUBLE_128__ || (defined(__sparc__) && defined(__arch64__))
316 #error no need for long double compatibility
318 ], [ac_ldbl_compat=yes], [ac_ldbl_compat=no])
319 if test "$ac_ldbl_compat" = yes; then
320 AC_DEFINE([_GLIBCXX_LONG_DOUBLE_COMPAT],1,
321 [Define if compatibility should be provided for -mlong-double-64.])
322 port_specific_symbol_files="\$(top_srcdir)/config/os/gnu-linux/ldbl-extra.ver"
325 GLIBCXX_CONDITIONAL(GLIBCXX_LDBL_COMPAT, test $ac_ldbl_compat = yes)
327 # This depends on GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE.
328 GLIBCXX_CONFIGURE_TESTSUITE
330 # Define documentation rules conditionally.
332 # See if makeinfo has been installed and is modern enough
333 # that we can use it.
334 ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version],
335 [GNU texinfo.* \([0-9][0-9.]*\)],
336 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
337 AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes")
340 AC_CHECK_PROG([DOXYGEN], doxygen, yes, no)
341 AC_CHECK_PROG([DOT], dot, yes, no)
344 AC_CHECK_PROG([XSLTPROC], xsltproc, yes, no)
345 AC_CHECK_PROG([XMLLINT], xmllint, yes, no)
346 GLIBCXX_CONFIGURE_DOCBOOK
348 # Check for xml/html dependencies.
349 AM_CONDITIONAL(BUILD_XML,
350 test $ac_cv_prog_DOXYGEN = "yes" &&
351 test $ac_cv_prog_DOT = "yes" &&
352 test $ac_cv_prog_XSLTPROC = "yes" &&
353 test $ac_cv_prog_XMLLINT = "yes" &&
354 test $glibcxx_stylesheets = "yes")
356 AM_CONDITIONAL(BUILD_HTML,
357 test $ac_cv_prog_DOXYGEN = "yes" &&
358 test $ac_cv_prog_DOT = "yes" &&
359 test $ac_cv_prog_XSLTPROC = "yes" &&
360 test $ac_cv_prog_XMLLINT = "yes" &&
361 test $glibcxx_stylesheets = "yes")
363 # Check for man dependencies.
364 AM_CONDITIONAL(BUILD_MAN,
365 test $ac_cv_prog_DOXYGEN = "yes" &&
366 test $ac_cv_prog_DOT = "yes")
368 # Check for pdf/epub dependencies.
369 AC_CHECK_PROG([DBLATEX], dblatex, yes, no)
370 AC_CHECK_PROG([PDFLATEX], pdflatex, yes, no)
371 AM_CONDITIONAL(BUILD_PDF,
372 test $ac_cv_prog_DBLATEX = "yes" &&
373 test $ac_cv_prog_PDFLATEX = "yes")
375 AC_CHECK_PROG([RUBY], ruby, yes, no)
376 AC_CHECK_PROG([DBTOEPUB], dbtoepub, yes, no)
377 AM_CONDITIONAL(BUILD_EPUB,
378 test $ac_cv_prog_RUBY = "yes" &&
379 test $ac_cv_prog_DBTOEPUB = "yes")
382 # Propagate the target-specific source directories through the build chain.
383 ATOMICITY_SRCDIR=config/${atomicity_dir}
384 ATOMIC_WORD_SRCDIR=config/${atomic_word_dir}
385 ATOMIC_FLAGS=${atomic_flags}
386 CPU_DEFINES_SRCDIR=config/${cpu_defines_dir}
387 OS_INC_SRCDIR=config/${os_include_dir}
388 ERROR_CONSTANTS_SRCDIR=config/${error_constants_dir}
389 ABI_TWEAKS_SRCDIR=config/${abi_tweaks_dir}
390 AC_SUBST(ATOMICITY_SRCDIR)
391 AC_SUBST(ATOMIC_WORD_SRCDIR)
392 AC_SUBST(ATOMIC_FLAGS)
393 AC_SUBST(CPU_DEFINES_SRCDIR)
394 AC_SUBST(ABI_TWEAKS_SRCDIR)
395 AC_SUBST(OS_INC_SRCDIR)
396 AC_SUBST(ERROR_CONSTANTS_SRCDIR)
399 # Determine cross-compile flags and AM_CONDITIONALs.
400 #AC_SUBST(GLIBCXX_IS_NATIVE)
401 #AM_CONDITIONAL(CANADIAN, test $CANADIAN = yes)
402 GLIBCXX_EVALUATE_CONDITIONALS
406 if test ${multilib} = yes; then
407 multilib_arg="--enable-multilib"
412 # Export all the install information.
413 GLIBCXX_EXPORT_INSTALL_INFO
415 # Export all the include and flag information to Makefiles.
416 GLIBCXX_EXPORT_INCLUDES
419 if test "$enable_shared" = yes; then
420 LIBSUPCXX_PICFLAGS="-prefer-pic"
424 AC_SUBST(LIBSUPCXX_PICFLAGS)
426 dnl In autoconf 2.5x, AC_OUTPUT is replaced by four AC_CONFIG_* macros,
427 dnl which can all be called multiple times as needed, plus one (different)
428 dnl AC_OUTPUT macro. This one lists the files to be created:
429 AC_CONFIG_FILES(Makefile)
430 AC_CONFIG_FILES([scripts/testsuite_flags],[chmod +x scripts/testsuite_flags])
431 AC_CONFIG_FILES([scripts/extract_symvers],[chmod +x scripts/extract_symvers])
433 # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
434 # that multilib installs will end up installed in the correct place.
435 # The testsuite needs it for multilib-aware ABI baseline files.
436 # To work around this not being passed down from config-ml.in ->
437 # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
438 # append it here. Only modify Makefiles that have just been created.
440 # Also, get rid of this simulated-VPATH thing that automake does.
441 AC_CONFIG_FILES(AC_FOREACH([DIR], glibcxx_SUBDIRS, [DIR/Makefile ]),
442 [cat > vpsed$$ << \_EOF
443 s!`test -f '$<' || echo '$(srcdir)/'`!!
445 sed -f vpsed$$ $ac_file > tmp$$
448 echo 'MULTISUBDIR =' >> $ac_file
450 . ${multi_basedir}/config-ml.in
451 AS_UNSET([ml_norecursion])
454 AC_CONFIG_COMMANDS([generate-headers],
455 [(cd include && ${MAKE-make} pch_build= )])
457 dnl And this actually makes things happen: