1 # Process this file with autoreconf to produce a configure script.
4 AC_INIT(package-unused, version-unused,, libstdc++)
5 AC_CONFIG_SRCDIR(src/shared/hashtable-aux.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 # Find the rest of the source tree framework.
15 AM_ENABLE_MULTILIB(, ..)
17 # Gets build, host, target, *_vendor, *_cpu, *_os, etc.
19 # You will slowly go insane if you do not grok the following fact: when
20 # building v3 as part of the compiler, the top-level /target/ becomes the
21 # library's /host/. configure then causes --target to default to --host,
22 # exactly like any other package using autoconf. Therefore, 'target' and
23 # 'host' will always be the same. This makes sense both for native and
24 # cross compilers, just think about it for a little while. :-)
26 # Also, if v3 is being configured as part of a cross compiler, the top-level
27 # configure script will pass the "real" host as $with_cross_host.
29 # Do not delete or change the following two lines. For why, see
30 # http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
32 target_alias=${target_alias-$host_alias}
34 # Handy for debugging:
35 #AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5
37 if test "$build" != "$host"; then
38 # We are being configured with some form of cross compiler.
39 GLIBCXX_IS_NATIVE=false
40 case "$host","$target" in
41 # Darwin crosses can use the host system's libraries and headers,
42 # because of the fat library support. Of course, it must be the
43 # same version of Darwin on both sides. Allow the user to
44 # just say --target=foo-darwin without a version number to mean
45 # "the version on this system".
46 *-*-darwin*,*-*-darwin*)
47 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
48 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
49 if test $hostos = $targetos -o $targetos = darwin ; then
50 GLIBCXX_IS_NATIVE=true
59 GLIBCXX_IS_NATIVE=true
62 # Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the
63 # following is magically included in AUTOMAKE_OPTIONS in each Makefile.am.
64 # 1.x: minimum required version
65 # no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch
66 # of other PACKAGE_* variables will, however, and there's nothing
67 # we can do about that; they come from AC_INIT).
68 # foreign: we don't follow the normal rules for GNU packages (no COPYING
69 # file in the top srcdir, etc, etc), so stop complaining.
70 # no-dependencies: turns off auto dependency generation (just for now)
71 # no-dist: we don't want 'dist' and related rules.
72 # -Wall: turns on all automake warnings...
73 # -Wno-portability: ...except this one, since GNU make is now required.
74 AM_INIT_AUTOMAKE([1.9.3 no-define foreign no-dependencies no-dist -Wall -Wno-portability -Wno-override])
75 AH_TEMPLATE(PACKAGE, [Name of package])
76 AH_TEMPLATE(VERSION, [Version number of package])
78 # -fno-builtin must be present here so that a non-conflicting form of
79 # std::exit can be guessed by AC_PROG_CXX, and used in later tests.
81 save_CXXFLAGS="$CXXFLAGS"
82 CXXFLAGS="$CXXFLAGS -fno-builtin"
85 CXXFLAGS="$save_CXXFLAGS"
87 # Runs configure.host, and assorted other critical bits. Sets
88 # up critical shell variables.
91 if test "x${with_newlib}" != "xyes"; then
96 AC_SUBST(enable_shared)
97 AC_SUBST(enable_static)
99 # Eliminate -lstdc++ addition to postdeps for cross compiles.
100 postdeps_CXX=`echo " $postdeps_CXX " | sed 's, -lstdc++ ,,g'`
102 # Possibly disable most of the library.
103 ## TODO: Consider skipping unncessary tests altogether in this case, rather
104 ## than just ignoring the results. Faster /and/ more correct, win win.
105 GLIBCXX_ENABLE_HOSTED
107 # Enable compiler support that doesn't require linking.
108 GLIBCXX_ENABLE_SJLJ_EXCEPTIONS
109 GLIBCXX_ENABLE_PCH($is_hosted)
110 GLIBCXX_ENABLE_THREADS
111 GLIBCXX_ENABLE_ATOMIC_BUILTINS
112 GLIBCXX_ENABLE_DECIMAL_FLOAT
113 GLIBCXX_ENABLE_INT128_FLOAT128
115 # Checks for compiler support that doesn't require linking.
116 GLIBCXX_CHECK_COMPILER_FEATURES
118 # Enable all the variable C++ runtime options that don't require linking.
119 GLIBCXX_ENABLE_CSTDIO
120 GLIBCXX_ENABLE_CLOCALE
121 GLIBCXX_ENABLE_ALLOCATOR
122 GLIBCXX_ENABLE_CHEADERS($c_model) dnl c_model from configure.host
123 GLIBCXX_ENABLE_LONG_LONG([yes])
124 GLIBCXX_ENABLE_WCHAR_T([yes])
125 GLIBCXX_ENABLE_C99([yes])
126 GLIBCXX_ENABLE_CONCEPT_CHECKS([no])
127 GLIBCXX_ENABLE_DEBUG_FLAGS(["-gdwarf-4 -g3 -O0"])
128 GLIBCXX_ENABLE_DEBUG([no])
129 GLIBCXX_ENABLE_PARALLEL([yes])
130 GLIBCXX_ENABLE_CXX_FLAGS
131 GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING([no])
132 GLIBCXX_ENABLE_EXTERN_TEMPLATE([yes])
133 GLIBCXX_ENABLE_PYTHON
134 GLIBCXX_ENABLE_WERROR([yes])
136 # Checks for operating systems support that doesn't require linking.
137 GLIBCXX_CHECK_MATH_PROTO
138 GLIBCXX_CHECK_STDLIB_PROTO
139 GLIBCXX_CHECK_SYSTEM_ERROR
141 # For the streamoff typedef.
142 GLIBCXX_CHECK_INT64_T
147 # For showmanyc_helper().
148 AC_CHECK_HEADERS(sys/ioctl.h sys/filio.h)
150 GLIBCXX_CHECK_S_ISREG_OR_S_IFREG
153 AC_CHECK_HEADERS(sys/uio.h)
156 # For C99 support to TR1.
157 GLIBCXX_CHECK_C99_TR1
159 # For the EOF, SEEK_CUR, and SEEK_END integer constants.
160 GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS
162 # For gettimeofday support.
163 GLIBCXX_CHECK_GETTIMEOFDAY
165 # For clock_gettime, nanosleep and sched_yield support.
166 # NB: The default is [no], because otherwise it requires linking.
167 GLIBCXX_ENABLE_LIBSTDCXX_TIME([no])
171 # For hardware_concurrency
172 AC_CHECK_HEADERS(sys/sysinfo.h)
173 GLIBCXX_CHECK_GET_NPROCS
174 AC_CHECK_HEADERS(unistd.h)
175 GLIBCXX_CHECK_SC_NPROCESSORS_ONLN
176 GLIBCXX_CHECK_SC_NPROC_ONLN
177 GLIBCXX_CHECK_PTHREADS_NUM_PROCESSORS_NP
178 GLIBCXX_CHECK_SYSCTL_HW_NCPU
180 # Check for available headers.
181 AC_CHECK_HEADERS([endian.h execinfo.h float.h fp.h ieeefp.h inttypes.h \
182 locale.h machine/endian.h machine/param.h nan.h stdint.h stdlib.h string.h \
183 strings.h sys/ipc.h sys/isa_defs.h sys/machine.h sys/param.h \
184 sys/resource.h sys/sem.h sys/stat.h sys/time.h sys/types.h unistd.h \
187 # Only do link tests if native. Else, hardcode.
188 if $GLIBCXX_IS_NATIVE; then
190 # We can do more elaborate tests that assume a working linker.
193 GLIBCXX_CHECK_LINKER_FEATURES
194 GLIBCXX_CHECK_MATH_SUPPORT
195 GLIBCXX_CHECK_STDLIB_SUPPORT
197 # For /dev/random and /dev/urandom for TR1.
198 GLIBCXX_CHECK_RANDOM_TR1
208 # This lets us hard-code the functionality we know we'll have in the cross
209 # target environment. "Let" is a sugar-coated word placed on an especially
210 # dull and tedious hack, actually.
212 # Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros
213 # that involve linking, can't be used:
214 # "cannot open sim-crt0.o"
215 # "cannot open crt0.o"
216 # etc. All this is because there currently exists no unified, consistent
217 # way for top level CC information to be passed down to target directories:
218 # newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc.
219 # When all of that is done, all of this hokey, excessive AC_DEFINE junk for
220 # crosses can be removed.
222 # If Canadian cross, then don't pick up tools from the build directory.
223 # Used only in GLIBCXX_EXPORT_INCLUDES.
224 if test -n "$with_cross_host" &&
225 test x"$build_alias" != x"$with_cross_host" &&
226 test x"$build" != x"$target";
233 # Construct crosses by hand, eliminating bits that need ld...
234 # GLIBCXX_CHECK_MATH_SUPPORT
236 # First, test for "known" system libraries. We may be using newlib even
237 # on a hosted environment.
238 if test "x${with_newlib}" = "xyes"; then
239 os_include_dir="os/newlib"
240 AC_DEFINE(HAVE_HYPOT)
242 # GLIBCXX_CHECK_STDLIB_SUPPORT
243 AC_DEFINE(HAVE_STRTOF)
245 AC_DEFINE(HAVE_ACOSF)
246 AC_DEFINE(HAVE_ASINF)
247 AC_DEFINE(HAVE_ATAN2F)
248 AC_DEFINE(HAVE_ATANF)
249 AC_DEFINE(HAVE_CEILF)
251 AC_DEFINE(HAVE_COSHF)
253 AC_DEFINE(HAVE_FABSF)
254 AC_DEFINE(HAVE_FLOORF)
255 AC_DEFINE(HAVE_FMODF)
256 AC_DEFINE(HAVE_FREXPF)
257 AC_DEFINE(HAVE_LDEXPF)
258 AC_DEFINE(HAVE_LOG10F)
260 AC_DEFINE(HAVE_MODFF)
263 AC_DEFINE(HAVE_SINHF)
264 AC_DEFINE(HAVE_SQRTF)
266 AC_DEFINE(HAVE_TANHF)
268 AC_DEFINE(HAVE_ICONV)
273 # At some point, we should differentiate between architectures
274 # like x86, which have long double versions, and alpha/powerpc/etc.,
275 # which don't. For the time being, punt.
276 if test x"long_double_math_on_this_cpu" = x"yes"; then
277 AC_DEFINE(HAVE_ACOSL)
278 AC_DEFINE(HAVE_ASINL)
279 AC_DEFINE(HAVE_ATAN2L)
280 AC_DEFINE(HAVE_ATANL)
281 AC_DEFINE(HAVE_CEILL)
283 AC_DEFINE(HAVE_COSHL)
285 AC_DEFINE(HAVE_FABSL)
286 AC_DEFINE(HAVE_FLOORL)
287 AC_DEFINE(HAVE_FMODL)
288 AC_DEFINE(HAVE_FREXPL)
289 AC_DEFINE(HAVE_LDEXPL)
290 AC_DEFINE(HAVE_LOG10L)
292 AC_DEFINE(HAVE_MODFL)
294 AC_DEFINE(HAVE_SINCOSL)
296 AC_DEFINE(HAVE_SINHL)
297 AC_DEFINE(HAVE_SQRTL)
299 AC_DEFINE(HAVE_TANHL)
303 # Check for _Unwind_GetIPInfo.
304 GCC_CHECK_UNWIND_GETIPINFO
306 GCC_LINUX_FUTEX([AC_DEFINE(HAVE_LINUX_FUTEX, 1, [Define if futex syscall is available.])])
308 GCC_HEADER_STDINT(include/gstdint.h)
310 GLIBCXX_ENABLE_SYMVERS([yes])
311 AC_SUBST(libtool_VERSION)
313 GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY([yes])
317 powerpc*-*-linux* | \
322 #if !defined __LONG_DOUBLE_128__ || (defined(__sparc__) && defined(__arch64__))
323 #error no need for long double compatibility
325 ], [ac_ldbl_compat=yes], [ac_ldbl_compat=no])
326 if test "$ac_ldbl_compat" = yes; then
327 AC_DEFINE([_GLIBCXX_LONG_DOUBLE_COMPAT],1,
328 [Define if compatibility should be provided for -mlong-double-64.])
329 port_specific_symbol_files="\$(top_srcdir)/config/os/gnu-linux/ldbl-extra.ver"
332 GLIBCXX_CONDITIONAL(GLIBCXX_LDBL_COMPAT, test $ac_ldbl_compat = yes)
334 # This depends on GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE.
335 GLIBCXX_CONFIGURE_TESTSUITE
337 # For gthread support. Depends on GLIBCXX_ENABLE_SYMVERS.
338 GLIBCXX_CHECK_GTHREADS
340 # Define documentation rules conditionally.
342 # See if makeinfo has been installed and is modern enough
343 # that we can use it.
344 ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version],
345 [GNU texinfo.* \([0-9][0-9.]*\)],
346 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
347 AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes")
350 AC_CHECK_PROG([DOXYGEN], doxygen, yes, no)
351 AC_CHECK_PROG([DOT], dot, yes, no)
354 AC_CHECK_PROG([XSLTPROC], xsltproc, yes, no)
355 AC_CHECK_PROG([XMLLINT], xmllint, yes, no)
356 GLIBCXX_CONFIGURE_DOCBOOK
358 # Check for xml/html dependencies.
359 AM_CONDITIONAL(BUILD_XML,
360 test $ac_cv_prog_DOXYGEN = "yes" &&
361 test $ac_cv_prog_DOT = "yes" &&
362 test $ac_cv_prog_XSLTPROC = "yes" &&
363 test $ac_cv_prog_XMLLINT = "yes" &&
364 test $glibcxx_stylesheets = "yes")
366 AM_CONDITIONAL(BUILD_HTML,
367 test $ac_cv_prog_DOXYGEN = "yes" &&
368 test $ac_cv_prog_DOT = "yes" &&
369 test $ac_cv_prog_XSLTPROC = "yes" &&
370 test $ac_cv_prog_XMLLINT = "yes" &&
371 test $glibcxx_stylesheets = "yes")
373 # Check for man dependencies.
374 AM_CONDITIONAL(BUILD_MAN,
375 test $ac_cv_prog_DOXYGEN = "yes" &&
376 test $ac_cv_prog_DOT = "yes")
378 # Check for pdf dependencies.
379 AC_CHECK_PROG([DBLATEX], dblatex, yes, no)
380 AC_CHECK_PROG([PDFLATEX], pdflatex, yes, no)
381 AM_CONDITIONAL(BUILD_PDF,
382 test $ac_cv_prog_DBLATEX = "yes" &&
383 test $ac_cv_prog_PDFLATEX = "yes")
386 # Propagate the target-specific source directories through the build chain.
387 ATOMICITY_SRCDIR=config/${atomicity_dir}
388 ATOMIC_WORD_SRCDIR=config/${atomic_word_dir}
389 ATOMIC_FLAGS=${atomic_flags}
390 CPU_DEFINES_SRCDIR=config/${cpu_defines_dir}
391 OS_INC_SRCDIR=config/${os_include_dir}
392 ERROR_CONSTANTS_SRCDIR=config/${error_constants_dir}
393 ABI_TWEAKS_SRCDIR=config/${abi_tweaks_dir}
394 AC_SUBST(ATOMICITY_SRCDIR)
395 AC_SUBST(ATOMIC_WORD_SRCDIR)
396 AC_SUBST(ATOMIC_FLAGS)
397 AC_SUBST(CPU_DEFINES_SRCDIR)
398 AC_SUBST(ABI_TWEAKS_SRCDIR)
399 AC_SUBST(OS_INC_SRCDIR)
400 AC_SUBST(ERROR_CONSTANTS_SRCDIR)
403 # Determine cross-compile flags and AM_CONDITIONALs.
404 #AC_SUBST(GLIBCXX_IS_NATIVE)
405 #AM_CONDITIONAL(CANADIAN, test $CANADIAN = yes)
406 GLIBCXX_EVALUATE_CONDITIONALS
410 if test ${multilib} = yes; then
411 multilib_arg="--enable-multilib"
416 # Export all the install information.
417 GLIBCXX_EXPORT_INSTALL_INFO
419 # Export all the include and flag information to Makefiles.
420 GLIBCXX_EXPORT_INCLUDES
423 if test "$enable_shared" = yes; then
424 PIC_CXXFLAGS="-prefer-pic"
428 AC_SUBST(PIC_CXXFLAGS)
430 dnl In autoconf 2.5x, AC_OUTPUT is replaced by four AC_CONFIG_* macros,
431 dnl which can all be called multiple times as needed, plus one (different)
432 dnl AC_OUTPUT macro. This one lists the files to be created:
433 AC_CONFIG_FILES(Makefile)
434 AC_CONFIG_FILES([scripts/testsuite_flags],[chmod +x scripts/testsuite_flags])
435 AC_CONFIG_FILES([scripts/extract_symvers],[chmod +x scripts/extract_symvers])
437 # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
438 # that multilib installs will end up installed in the correct place.
439 # The testsuite needs it for multilib-aware ABI baseline files.
440 # To work around this not being passed down from config-ml.in ->
441 # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
442 # append it here. Only modify Makefiles that have just been created.
444 # Also, get rid of this simulated-VPATH thing that automake does.
445 AC_CONFIG_FILES(AC_FOREACH([DIR], glibcxx_SUBDIRS, [DIR/Makefile ]),
446 [cat > vpsed$$ << \_EOF
447 s!`test -f '$<' || echo '$(srcdir)/'`!!
449 sed -f vpsed$$ $ac_file > tmp$$
452 echo 'MULTISUBDIR =' >> $ac_file
454 . ${multi_basedir}/config-ml.in
455 AS_UNSET([ml_norecursion])
458 AC_CONFIG_COMMANDS([generate-headers],
459 [(cd include && ${MAKE-make} pch_build= )])
461 dnl And this actually makes things happen: