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=6:17:0
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
117 GLIBCXX_ENABLE_INT128_FLOAT128
119 # Checks for compiler support that doesn't require linking.
120 GLIBCXX_CHECK_COMPILER_FEATURES
122 # Enable all the variable C++ runtime options that don't require linking.
123 GLIBCXX_ENABLE_CSTDIO
124 GLIBCXX_ENABLE_CLOCALE
125 GLIBCXX_ENABLE_ALLOCATOR
126 GLIBCXX_ENABLE_CHEADERS($c_model) dnl c_model from configure.host
127 GLIBCXX_ENABLE_LONG_LONG([yes])
128 GLIBCXX_ENABLE_WCHAR_T([yes])
129 GLIBCXX_ENABLE_C99([yes])
130 GLIBCXX_ENABLE_CONCEPT_CHECKS([no])
131 GLIBCXX_ENABLE_DEBUG_FLAGS(["-g3 -O0"])
132 GLIBCXX_ENABLE_DEBUG([no])
133 GLIBCXX_ENABLE_PARALLEL([yes])
134 GLIBCXX_ENABLE_CXX_FLAGS
135 GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING([no])
136 GLIBCXX_ENABLE_EXTERN_TEMPLATE([yes])
138 # Checks for operating systems support that doesn't require linking.
139 GLIBCXX_CHECK_MATH_PROTO
140 GLIBCXX_CHECK_STDLIB_PROTO
141 GLIBCXX_CHECK_SYSTEM_ERROR
143 # For the streamoff typedef.
144 GLIBCXX_CHECK_INT64_T
149 # For showmanyc_helper().
150 AC_CHECK_HEADERS(sys/ioctl.h sys/filio.h)
152 GLIBCXX_CHECK_S_ISREG_OR_S_IFREG
155 AC_CHECK_HEADERS(sys/uio.h)
158 # For C99 support to TR1.
159 GLIBCXX_CHECK_C99_TR1
161 # For the EOF, SEEK_CUR, and SEEK_END integer constants.
162 GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS
164 # For gettimeofday support.
165 GLIBCXX_CHECK_GETTIMEOFDAY
167 # For clock_gettime, nanosleep and sched_yield support.
168 # NB: The default is [no], because otherwise it requires linking.
169 GLIBCXX_ENABLE_LIBSTDCXX_TIME([no])
171 # For gthread support
172 GLIBCXX_CHECK_GTHREADS
176 # For hardware_concurrency
177 AC_CHECK_HEADERS(sys/sysinfo.h)
178 GLIBCXX_CHECK_GET_NPROCS
179 AC_CHECK_HEADERS(unistd.h)
180 GLIBCXX_CHECK_SC_NPROCESSORS_ONLN
182 # Check for available headers.
183 AC_CHECK_HEADERS([endian.h execinfo.h float.h fp.h ieeefp.h inttypes.h \
184 locale.h machine/endian.h machine/param.h nan.h stdint.h stdlib.h string.h \
185 strings.h sys/ipc.h sys/isa_defs.h sys/machine.h sys/param.h \
186 sys/resource.h sys/sem.h sys/stat.h sys/time.h sys/types.h unistd.h \
189 # Only do link tests if native. Else, hardcode.
190 if $GLIBCXX_IS_NATIVE; then
192 # We can do more elaborate tests that assume a working linker.
195 GLIBCXX_CHECK_LINKER_FEATURES
196 GLIBCXX_CHECK_MATH_SUPPORT
197 GLIBCXX_CHECK_STDLIB_SUPPORT
199 # For /dev/random and /dev/urandom for TR1.
200 GLIBCXX_CHECK_RANDOM_TR1
210 # This lets us hard-code the functionality we know we'll have in the cross
211 # target environment. "Let" is a sugar-coated word placed on an especially
212 # dull and tedious hack, actually.
214 # Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros
215 # that involve linking, can't be used:
216 # "cannot open sim-crt0.o"
217 # "cannot open crt0.o"
218 # etc. All this is because there currently exists no unified, consistent
219 # way for top level CC information to be passed down to target directories:
220 # newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc.
221 # When all of that is done, all of this hokey, excessive AC_DEFINE junk for
222 # crosses can be removed.
224 # If Canadian cross, then don't pick up tools from the build directory.
225 # Used only in GLIBCXX_EXPORT_INCLUDES.
226 if test -n "$with_cross_host" &&
227 test x"$build_alias" != x"$with_cross_host" &&
228 test x"$build" != x"$target";
235 # Construct crosses by hand, eliminating bits that need ld...
236 # GLIBCXX_CHECK_MATH_SUPPORT
238 # First, test for "known" system libraries. We may be using newlib even
239 # on a hosted environment.
240 if test "x${with_newlib}" = "xyes"; then
241 os_include_dir="os/newlib"
242 AC_DEFINE(HAVE_HYPOT)
244 # GLIBCXX_CHECK_STDLIB_SUPPORT
245 AC_DEFINE(HAVE_STRTOF)
247 AC_DEFINE(HAVE_ACOSF)
248 AC_DEFINE(HAVE_ASINF)
249 AC_DEFINE(HAVE_ATAN2F)
250 AC_DEFINE(HAVE_ATANF)
251 AC_DEFINE(HAVE_CEILF)
253 AC_DEFINE(HAVE_COSHF)
255 AC_DEFINE(HAVE_FABSF)
256 AC_DEFINE(HAVE_FLOORF)
257 AC_DEFINE(HAVE_FMODF)
258 AC_DEFINE(HAVE_FREXPF)
259 AC_DEFINE(HAVE_LDEXPF)
260 AC_DEFINE(HAVE_LOG10F)
262 AC_DEFINE(HAVE_MODFF)
265 AC_DEFINE(HAVE_SINHF)
266 AC_DEFINE(HAVE_SQRTF)
268 AC_DEFINE(HAVE_TANHF)
270 AC_DEFINE(HAVE_ICONV)
275 # At some point, we should differentiate between architectures
276 # like x86, which have long double versions, and alpha/powerpc/etc.,
277 # which don't. For the time being, punt.
278 if test x"long_double_math_on_this_cpu" = x"yes"; then
279 AC_DEFINE(HAVE_ACOSL)
280 AC_DEFINE(HAVE_ASINL)
281 AC_DEFINE(HAVE_ATAN2L)
282 AC_DEFINE(HAVE_ATANL)
283 AC_DEFINE(HAVE_CEILL)
285 AC_DEFINE(HAVE_COSHL)
287 AC_DEFINE(HAVE_FABSL)
288 AC_DEFINE(HAVE_FLOORL)
289 AC_DEFINE(HAVE_FMODL)
290 AC_DEFINE(HAVE_FREXPL)
291 AC_DEFINE(HAVE_LDEXPL)
292 AC_DEFINE(HAVE_LOG10L)
294 AC_DEFINE(HAVE_MODFL)
296 AC_DEFINE(HAVE_SINCOSL)
298 AC_DEFINE(HAVE_SINHL)
299 AC_DEFINE(HAVE_SQRTL)
301 AC_DEFINE(HAVE_TANHL)
305 # Check for _Unwind_GetIPInfo.
306 GCC_CHECK_UNWIND_GETIPINFO
309 GCC_LINUX_FUTEX([AC_DEFINE(HAVE_LINUX_FUTEX, 1, [Define if futex syscall is available.])])
311 GCC_HEADER_STDINT(include/gstdint.h)
313 # This depends on GLIBCXX CHECK_LINKER_FEATURES, but without it assumes no.
314 GLIBCXX_ENABLE_SYMVERS([yes])
315 GLIBCXX_ENABLE_VISIBILITY([yes])
319 powerpc*-*-linux* | \
324 #if !defined __LONG_DOUBLE_128__ || (defined(__sparc__) && defined(__arch64__))
325 #error no need for long double compatibility
327 ], [ac_ldbl_compat=yes], [ac_ldbl_compat=no])
328 if test "$ac_ldbl_compat" = yes; then
329 AC_DEFINE([_GLIBCXX_LONG_DOUBLE_COMPAT],1,
330 [Define if compatibility should be provided for -mlong-double-64.])
331 port_specific_symbol_files="\$(top_srcdir)/config/os/gnu-linux/ldbl-extra.ver"
334 GLIBCXX_CONDITIONAL(GLIBCXX_LDBL_COMPAT, test $ac_ldbl_compat = yes)
336 # This depends on GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE.
337 GLIBCXX_CONFIGURE_TESTSUITE
339 # Define documentation rules conditionally.
341 # See if makeinfo has been installed and is modern enough
342 # that we can use it.
343 ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version],
344 [GNU texinfo.* \([0-9][0-9.]*\)],
345 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
346 AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes")
349 AC_CHECK_PROG([DOXYGEN], doxygen, yes, no)
350 AC_CHECK_PROG([DOT], dot, yes, no)
353 AC_CHECK_PROG([XSLTPROC], xsltproc, yes, no)
354 AC_CHECK_PROG([XMLLINT], xmllint, yes, no)
355 GLIBCXX_CONFIGURE_DOCBOOK
357 # Check for xml/html dependencies.
358 AM_CONDITIONAL(BUILD_XML,
359 test $ac_cv_prog_DOXYGEN = "yes" &&
360 test $ac_cv_prog_DOT = "yes" &&
361 test $ac_cv_prog_XSLTPROC = "yes" &&
362 test $ac_cv_prog_XMLLINT = "yes" &&
363 test $glibcxx_stylesheets = "yes")
365 AM_CONDITIONAL(BUILD_HTML,
366 test $ac_cv_prog_DOXYGEN = "yes" &&
367 test $ac_cv_prog_DOT = "yes" &&
368 test $ac_cv_prog_XSLTPROC = "yes" &&
369 test $ac_cv_prog_XMLLINT = "yes" &&
370 test $glibcxx_stylesheets = "yes")
372 # Check for man dependencies.
373 AM_CONDITIONAL(BUILD_MAN,
374 test $ac_cv_prog_DOXYGEN = "yes" &&
375 test $ac_cv_prog_DOT = "yes")
377 # Check for pdf/epub dependencies.
378 AC_CHECK_PROG([DBLATEX], dblatex, yes, no)
379 AC_CHECK_PROG([PDFLATEX], pdflatex, yes, no)
380 AM_CONDITIONAL(BUILD_PDF,
381 test $ac_cv_prog_DBLATEX = "yes" &&
382 test $ac_cv_prog_PDFLATEX = "yes")
384 AC_CHECK_PROG([RUBY], ruby, yes, no)
385 AC_CHECK_PROG([DBTOEPUB], dbtoepub, yes, no)
386 AM_CONDITIONAL(BUILD_EPUB,
387 test $ac_cv_prog_RUBY = "yes" &&
388 test $ac_cv_prog_DBTOEPUB = "yes")
391 # Propagate the target-specific source directories through the build chain.
392 ATOMICITY_SRCDIR=config/${atomicity_dir}
393 ATOMIC_WORD_SRCDIR=config/${atomic_word_dir}
394 ATOMIC_FLAGS=${atomic_flags}
395 CPU_DEFINES_SRCDIR=config/${cpu_defines_dir}
396 OS_INC_SRCDIR=config/${os_include_dir}
397 ERROR_CONSTANTS_SRCDIR=config/${error_constants_dir}
398 ABI_TWEAKS_SRCDIR=config/${abi_tweaks_dir}
399 AC_SUBST(ATOMICITY_SRCDIR)
400 AC_SUBST(ATOMIC_WORD_SRCDIR)
401 AC_SUBST(ATOMIC_FLAGS)
402 AC_SUBST(CPU_DEFINES_SRCDIR)
403 AC_SUBST(ABI_TWEAKS_SRCDIR)
404 AC_SUBST(OS_INC_SRCDIR)
405 AC_SUBST(ERROR_CONSTANTS_SRCDIR)
408 # Determine cross-compile flags and AM_CONDITIONALs.
409 #AC_SUBST(GLIBCXX_IS_NATIVE)
410 #AM_CONDITIONAL(CANADIAN, test $CANADIAN = yes)
411 GLIBCXX_EVALUATE_CONDITIONALS
415 if test ${multilib} = yes; then
416 multilib_arg="--enable-multilib"
421 # Export all the install information.
422 GLIBCXX_EXPORT_INSTALL_INFO
424 # Export all the include and flag information to Makefiles.
425 GLIBCXX_EXPORT_INCLUDES
428 if test "$enable_shared" = yes; then
429 LIBSUPCXX_PICFLAGS="-prefer-pic"
433 AC_SUBST(LIBSUPCXX_PICFLAGS)
435 dnl In autoconf 2.5x, AC_OUTPUT is replaced by four AC_CONFIG_* macros,
436 dnl which can all be called multiple times as needed, plus one (different)
437 dnl AC_OUTPUT macro. This one lists the files to be created:
438 AC_CONFIG_FILES(Makefile)
439 AC_CONFIG_FILES([scripts/testsuite_flags],[chmod +x scripts/testsuite_flags])
440 AC_CONFIG_FILES([scripts/extract_symvers],[chmod +x scripts/extract_symvers])
442 # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
443 # that multilib installs will end up installed in the correct place.
444 # The testsuite needs it for multilib-aware ABI baseline files.
445 # To work around this not being passed down from config-ml.in ->
446 # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
447 # append it here. Only modify Makefiles that have just been created.
449 # Also, get rid of this simulated-VPATH thing that automake does.
450 AC_CONFIG_FILES(AC_FOREACH([DIR], glibcxx_SUBDIRS, [DIR/Makefile ]),
451 [cat > vpsed$$ << \_EOF
452 s!`test -f '$<' || echo '$(srcdir)/'`!!
454 sed -f vpsed$$ $ac_file > tmp$$
457 echo 'MULTISUBDIR =' >> $ac_file
459 . ${multi_basedir}/config-ml.in
460 AS_UNSET([ml_norecursion])
463 AC_CONFIG_COMMANDS([generate-headers],
464 [(cd include && ${MAKE-make} pch_build= )])
466 dnl And this actually makes things happen: