1# Process this file with autoreconf to produce a configure script.
2
3AC_INIT(package-unused, version-unused,, libstdc++)
4AC_CONFIG_SRCDIR(src/shared/hashtable-aux.cc)
5AC_CONFIG_HEADER(config.h)
6
7# This works around the fact that libtool configuration may change LD
8# for this particular configuration, but some shells, instead of
9# keeping the changes in LD private, export them just because LD is
10# exported.  Only used at the end of this file.
11### am handles this now?  ORIGINAL_LD_FOR_MULTILIBS=$LD
12
13# Find the rest of the source tree framework.
14AM_ENABLE_MULTILIB(, ..)
15
16# Gets build, host, target, *_vendor, *_cpu, *_os, etc.
17#
18# You will slowly go insane if you do not grok the following fact:  when
19# building v3 as part of the compiler, the top-level /target/ becomes the
20# library's /host/.  configure then causes --target to default to --host,
21# exactly like any other package using autoconf.  Therefore, 'target' and
22# 'host' will always be the same.  This makes sense both for native and
23# cross compilers, just think about it for a little while.  :-)
24#
25# Also, if v3 is being configured as part of a cross compiler, the top-level
26# configure script will pass the "real" host as $with_cross_host.
27#
28# Do not delete or change the following two lines.  For why, see
29# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
30AC_CANONICAL_SYSTEM
31target_alias=${target_alias-$host_alias}
32
33# Handy for debugging:
34#AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5
35
36if test "$build" != "$host"; then
37  # We are being configured with some form of cross compiler.
38  GLIBCXX_IS_NATIVE=false
39  case "$host","$target" in
40    # Darwin crosses can use the host system's libraries and headers,
41    # because of the fat library support.  Of course, it must be the
42    # same version of Darwin on both sides.  Allow the user to
43    # just say --target=foo-darwin without a version number to mean
44    # "the version on this system".
45      *-*-darwin*,*-*-darwin*)
46	hostos=`echo $host | sed 's/.*-darwin/darwin/'`
47	targetos=`echo $target | sed 's/.*-darwin/darwin/'`
48	if test $hostos = $targetos -o $targetos = darwin ; then
49	  GLIBCXX_IS_NATIVE=true
50	fi
51	;;
52
53      *)
54	GCC_NO_EXECUTABLES
55	;;
56  esac
57else
58  GLIBCXX_IS_NATIVE=true
59fi
60
61# Sets up automake.  Must come after AC_CANONICAL_SYSTEM.  Each of the
62# following is magically included in AUTOMAKE_OPTIONS in each Makefile.am.
63#  1.x:  minimum required version
64#  no-define:  PACKAGE and VERSION will not be #define'd in config.h (a bunch
65#              of other PACKAGE_* variables will, however, and there's nothing
66#              we can do about that; they come from AC_INIT).
67#  foreign:  we don't follow the normal rules for GNU packages (no COPYING
68#            file in the top srcdir, etc, etc), so stop complaining.
69#  no-dependencies:  turns off auto dependency generation (just for now)
70#  no-dist:  we don't want 'dist' and related rules.
71#  -Wall:  turns on all automake warnings...
72#  -Wno-portability:  ...except this one, since GNU make is now required.
73AM_INIT_AUTOMAKE([1.9.3 no-define foreign no-dependencies no-dist -Wall -Wno-portability -Wno-override])
74AH_TEMPLATE(PACKAGE, [Name of package])
75AH_TEMPLATE(VERSION, [Version number of package])
76
77# -fno-builtin must be present here so that a non-conflicting form of
78# std::exit can be guessed by AC_PROG_CXX, and used in later tests.
79
80save_CXXFLAGS="$CXXFLAGS"
81CXXFLAGS="$CXXFLAGS -fno-builtin"
82AC_PROG_CC
83AC_PROG_CXX
84CXXFLAGS="$save_CXXFLAGS"
85
86AC_SYS_LARGEFILE
87
88# Runs configure.host, and assorted other critical bits.  Sets
89# up critical shell variables.
90GLIBCXX_CONFIGURE
91
92# Libtool setup.
93if test "x${with_newlib}" != "xyes" && test "x${with_avrlibc}" != "xyes"; then
94  AC_LIBTOOL_DLOPEN
95fi
96AM_PROG_LIBTOOL
97ACX_LT_HOST_FLAGS
98AC_SUBST(enable_shared)
99AC_SUBST(enable_static)
100
101if test "$enable_vtable_verify" = yes; then
102  predep_objects_CXX="${predep_objects_CXX} ${glibcxx_builddir}/../libgcc/vtv_start.o"
103  postdep_objects_CXX="${postdep_objects_CXX} ${glibcxx_builddir}/../libgcc/vtv_end.o"
104fi
105
106
107# libtool variables for C++ shared and position-independent compiles.
108#
109# Use glibcxx_lt_pic_flag to designate the automake variable
110# used to encapsulate the default libtool approach to creating objects
111# with position-independent code. Default: -prefer-pic.
112#
113# Use glibcxx_compiler_shared_flag to designate a compile-time flags for
114# creating shared objects. Default: -D_GLIBCXX_SHARED.
115#
116# Use glibcxx_compiler_pic_flag to designate a compile-time flags for
117# creating position-independent objects. This varies with the target
118# hardware and operating system, but is often: -DPIC -fPIC.
119if test "$enable_shared" = yes; then
120  glibcxx_lt_pic_flag="-prefer-pic"
121  glibcxx_compiler_pic_flag="$lt_prog_compiler_pic_CXX"
122  glibcxx_compiler_shared_flag="-D_GLIBCXX_SHARED"
123
124else
125  glibcxx_lt_pic_flag=
126  glibcxx_compiler_pic_flag=
127  glibcxx_compiler_shared_flag=
128fi
129AC_SUBST(glibcxx_lt_pic_flag)
130AC_SUBST(glibcxx_compiler_pic_flag)
131AC_SUBST(glibcxx_compiler_shared_flag)
132
133# Override the libtool's pic_flag and pic_mode.
134# Do this step after AM_PROG_LIBTOOL, but before AC_OUTPUT.
135# NB: this impacts --with-pic and --without-pic.
136lt_prog_compiler_pic_CXX="$glibcxx_compiler_pic_flag $glibcxx_compiler_shared_flag"
137pic_mode='default'
138
139# Eliminate -lstdc++ addition to postdeps for cross compiles.
140postdeps_CXX=`echo " $postdeps_CXX " | sed 's, -lstdc++ ,,g'`
141
142# Possibly disable most of the library.
143## TODO: Consider skipping unncessary tests altogether in this case, rather
144## than just ignoring the results.  Faster /and/ more correct, win win.
145GLIBCXX_ENABLE_HOSTED
146
147# Enable descriptive messages to standard output on termination.
148GLIBCXX_ENABLE_VERBOSE
149
150# Enable compiler support that doesn't require linking.
151GLIBCXX_ENABLE_PCH($is_hosted)
152GLIBCXX_ENABLE_THREADS
153GLIBCXX_ENABLE_ATOMIC_BUILTINS
154GLIBCXX_ENABLE_LOCK_POLICY
155GLIBCXX_ENABLE_DECIMAL_FLOAT
156GLIBCXX_ENABLE_INT128_FLOAT128
157if test "$enable_float128" = yes; then
158  port_specific_symbol_files="$port_specific_symbol_files \$(top_srcdir)/config/abi/pre/float128.ver"
159fi
160
161# Checks for compiler support that doesn't require linking.
162GLIBCXX_CHECK_COMPILER_FEATURES
163
164# Enable all the variable C++ runtime options that don't require linking.
165GLIBCXX_ENABLE_CSTDIO
166GLIBCXX_ENABLE_CLOCALE
167GLIBCXX_ENABLE_ALLOCATOR
168GLIBCXX_ENABLE_CHEADERS($c_model)  dnl c_model from configure.host
169GLIBCXX_ENABLE_LONG_LONG([yes])
170GLIBCXX_ENABLE_WCHAR_T([yes])
171GLIBCXX_ENABLE_C99([yes])
172GLIBCXX_ENABLE_CONCEPT_CHECKS([no])
173GLIBCXX_ENABLE_DEBUG_FLAGS(["-gdwarf-4 -g3 -O0 -D_GLIBCXX_ASSERTIONS"])
174GLIBCXX_ENABLE_DEBUG([no])
175GLIBCXX_ENABLE_PARALLEL([yes])
176GLIBCXX_ENABLE_CXX_FLAGS
177GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING([no])
178GLIBCXX_ENABLE_EXTERN_TEMPLATE([yes])
179GLIBCXX_ENABLE_PYTHON
180GLIBCXX_ENABLE_WERROR([no])
181GLIBCXX_ENABLE_VTABLE_VERIFY([no])
182
183# Checks for operating systems support that doesn't require linking.
184GLIBCXX_CHECK_STDIO_PROTO
185GLIBCXX_CHECK_MATH11_PROTO
186GLIBCXX_CHECK_UCHAR_H
187
188# For the streamoff typedef.
189GLIBCXX_CHECK_INT64_T
190
191# For LFS support.
192GLIBCXX_CHECK_LFS
193
194# For showmanyc_helper().
195AC_CHECK_HEADERS(sys/ioctl.h sys/filio.h)
196GLIBCXX_CHECK_POLL
197GLIBCXX_CHECK_S_ISREG_OR_S_IFREG
198
199# For xsputn_2().
200AC_CHECK_HEADERS(sys/uio.h)
201GLIBCXX_CHECK_WRITEV
202
203# Check for fenv.h and complex.h before GLIBCXX_CHECK_C99_TR1
204# so that the check is done with the C compiler (not C++).
205# Checking with C++ can break a canadian cross build if either
206# file does not exist in C but does in C++.
207AC_CHECK_HEADERS(fenv.h complex.h)
208
209# For C99 support to TR1.
210GLIBCXX_CHECK_C99_TR1
211
212# For the EOF, SEEK_CUR, and SEEK_END integer constants.
213GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS
214
215# For gettimeofday support.
216GLIBCXX_CHECK_GETTIMEOFDAY
217
218# For clock_gettime, nanosleep and sched_yield support.
219GLIBCXX_ENABLE_LIBSTDCXX_TIME
220
221# Check for tmpnam which is obsolescent in POSIX.1-2008
222GLIBCXX_CHECK_TMPNAM
223
224# For pthread_cond_clockwait
225GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT
226
227# For pthread_mutex_clocklock
228GLIBCXX_CHECK_PTHREAD_MUTEX_CLOCKLOCK
229
230# For pthread_rwlock_clockrdlock and pthread_rwlock_clockwrlock
231GLIBCXX_CHECK_PTHREAD_RWLOCK_CLOCKLOCK
232
233AC_LC_MESSAGES
234
235# For hardware_concurrency
236AC_CHECK_HEADERS(sys/sysinfo.h)
237GLIBCXX_CHECK_GET_NPROCS
238AC_CHECK_HEADERS(unistd.h)
239GLIBCXX_CHECK_SC_NPROCESSORS_ONLN
240GLIBCXX_CHECK_SC_NPROC_ONLN
241GLIBCXX_CHECK_PTHREADS_NUM_PROCESSORS_NP
242GLIBCXX_CHECK_SYSCTL_HW_NCPU
243GLIBCXX_CHECK_SDT_H
244
245# Check for available headers.
246AC_CHECK_HEADERS([endian.h execinfo.h float.h fp.h ieeefp.h inttypes.h \
247locale.h machine/endian.h machine/param.h nan.h stdint.h stdlib.h string.h \
248strings.h sys/ipc.h sys/isa_defs.h sys/machine.h sys/param.h \
249sys/resource.h sys/sem.h sys/stat.h sys/time.h sys/types.h unistd.h \
250wchar.h wctype.h linux/types.h])
251
252AC_CHECK_HEADERS([linux/random.h], [], [],
253[[#ifdef HAVE_LINUX_TYPES_H
254# include <linux/types.h>
255#endif
256]])
257
258AC_CHECK_HEADERS([xlocale.h])
259
260# Only do link tests if native. Else, hardcode.
261if $GLIBCXX_IS_NATIVE; then
262
263  # We can do more elaborate tests that assume a working linker.
264  CANADIAN=no
265
266  GLIBCXX_CHECK_LINKER_FEATURES
267  GLIBCXX_CHECK_MATH_SUPPORT
268  GLIBCXX_CHECK_STDLIB_SUPPORT
269
270  # For /dev/random and /dev/urandom for std::random_device.
271  GLIBCXX_CHECK_DEV_RANDOM
272
273  # For TLS support.
274  GCC_CHECK_TLS
275
276  AC_CHECK_FUNCS(__cxa_thread_atexit_impl __cxa_thread_atexit)
277  AC_CHECK_FUNCS(aligned_alloc posix_memalign memalign _aligned_malloc)
278  AC_CHECK_FUNCS(_wfopen)
279
280  # C11 functions for C++17 library
281  AC_CHECK_FUNCS(timespec_get)
282
283  # For Networking TS.
284  AC_CHECK_FUNCS(sockatmark)
285
286  # Non-standard functions used by C++17 std::from_chars
287  AC_CHECK_FUNCS(uselocale)
288
289  # For iconv support.
290  AM_ICONV
291
292else
293
294  # This lets us hard-code the functionality we know we'll have in the cross
295  # target environment.  "Let" is a sugar-coated word placed on an especially
296  # dull and tedious hack, actually.
297  #
298  # Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros
299  # that involve linking, can't be used:
300  #    "cannot open sim-crt0.o"
301  #    "cannot open crt0.o"
302  # etc.  All this is because there currently exists no unified, consistent
303  # way for top level CC information to be passed down to target directories:
304  # newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc.
305  # When all of that is done, all of this hokey, excessive AC_DEFINE junk for
306  # crosses can be removed.
307
308  # If Canadian cross, then don't pick up tools from the build directory.
309  # Used only in GLIBCXX_EXPORT_INCLUDES.
310  if test -n "$with_cross_host" &&
311     test x"$build_alias" != x"$with_cross_host" &&
312     test x"$build" != x"$target";
313  then
314    CANADIAN=yes
315  else
316    CANADIAN=no
317  fi
318
319  # Construct crosses by hand, eliminating bits that need ld...
320  # GLIBCXX_CHECK_MATH_SUPPORT
321
322  # First, test for "known" system libraries.  We may be using newlib even
323  # on a hosted environment.
324  if test "x${with_newlib}" = "xyes"; then
325    os_include_dir="os/newlib"
326    AC_DEFINE(HAVE_HYPOT)
327
328    # GLIBCXX_CHECK_STDLIB_SUPPORT
329    AC_DEFINE(HAVE_STRTOF)
330
331    AC_DEFINE(HAVE_ACOSF)
332    AC_DEFINE(HAVE_ASINF)
333    AC_DEFINE(HAVE_ATAN2F)
334    AC_DEFINE(HAVE_ATANF)
335    AC_DEFINE(HAVE_CEILF)
336    AC_DEFINE(HAVE_COSF)
337    AC_DEFINE(HAVE_COSHF)
338    AC_DEFINE(HAVE_EXPF)
339    AC_DEFINE(HAVE_FABSF)
340    AC_DEFINE(HAVE_FLOORF)
341    AC_DEFINE(HAVE_FMODF)
342    AC_DEFINE(HAVE_FREXPF)
343    AC_DEFINE(HAVE_LDEXPF)
344    AC_DEFINE(HAVE_LOG10F)
345    AC_DEFINE(HAVE_LOGF)
346    AC_DEFINE(HAVE_MODFF)
347    AC_DEFINE(HAVE_POWF)
348    AC_DEFINE(HAVE_SINF)
349    AC_DEFINE(HAVE_SINHF)
350    AC_DEFINE(HAVE_SQRTF)
351    AC_DEFINE(HAVE_TANF)
352    AC_DEFINE(HAVE_TANHF)
353
354    AC_DEFINE(HAVE_ICONV)
355    AC_DEFINE(HAVE_MEMALIGN)
356  else
357    GLIBCXX_CROSSCONFIG
358  fi
359
360  # At some point, we should differentiate between architectures
361  # like x86, which have long double versions, and alpha/powerpc/etc.,
362  # which don't. For the time being, punt.
363  if test x"long_double_math_on_this_cpu" = x"yes"; then
364    AC_DEFINE(HAVE_ACOSL)
365    AC_DEFINE(HAVE_ASINL)
366    AC_DEFINE(HAVE_ATAN2L)
367    AC_DEFINE(HAVE_ATANL)
368    AC_DEFINE(HAVE_CEILL)
369    AC_DEFINE(HAVE_COSL)
370    AC_DEFINE(HAVE_COSHL)
371    AC_DEFINE(HAVE_EXPL)
372    AC_DEFINE(HAVE_FABSL)
373    AC_DEFINE(HAVE_FLOORL)
374    AC_DEFINE(HAVE_FMODL)
375    AC_DEFINE(HAVE_FREXPL)
376    AC_DEFINE(HAVE_LDEXPL)
377    AC_DEFINE(HAVE_LOG10L)
378    AC_DEFINE(HAVE_LOGL)
379    AC_DEFINE(HAVE_MODFL)
380    AC_DEFINE(HAVE_POWL)
381    AC_DEFINE(HAVE_SINCOSL)
382    AC_DEFINE(HAVE_SINL)
383    AC_DEFINE(HAVE_SINHL)
384    AC_DEFINE(HAVE_SQRTL)
385    AC_DEFINE(HAVE_TANL)
386    AC_DEFINE(HAVE_TANHL)
387  fi
388fi
389
390# Check for _Unwind_GetIPInfo.
391GCC_CHECK_UNWIND_GETIPINFO
392
393GCC_LINUX_FUTEX([AC_DEFINE(HAVE_LINUX_FUTEX, 1, [Define if futex syscall is available.])])
394
395GCC_HEADER_STDINT(include/gstdint.h)
396
397GLIBCXX_ENABLE_SYMVERS([yes])
398AC_SUBST(libtool_VERSION)
399
400GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY([yes])
401
402GLIBCXX_ENABLE_LIBSTDCXX_DUAL_ABI([yes])
403GLIBCXX_DEFAULT_ABI
404
405ac_ldbl_compat=no
406ac_ldbl_alt128_compat=no
407ac_ldbl_ieee128_default=no
408LONG_DOUBLE_COMPAT_FLAGS="-mlong-double-64"
409LONG_DOUBLE_128_FLAGS=
410LONG_DOUBLE_ALT128_COMPAT_FLAGS=
411case "$target" in
412  powerpc*-*-linux* | \
413  sparc*-*-linux* | \
414  s390*-*-linux* | \
415  alpha*-*-linux*)
416  AC_TRY_COMPILE(, [
417#if !defined __LONG_DOUBLE_128__ || (defined(__sparc__) && defined(__arch64__))
418#error no need for long double compatibility
419#endif
420  ], [ac_ldbl_compat=yes], [ac_ldbl_compat=no])
421  if test "$ac_ldbl_compat" = yes; then
422    AC_DEFINE([_GLIBCXX_LONG_DOUBLE_COMPAT],1,
423	      [Define if compatibility should be provided for -mlong-double-64.])
424    port_specific_symbol_files="\$(top_srcdir)/config/os/gnu-linux/ldbl-extra.ver"
425    case "$target" in
426      powerpc*-*-linux*)
427	LONG_DOUBLE_COMPAT_FLAGS="$LONG_DOUBLE_COMPAT_FLAGS -mno-gnu-attribute"
428        # Check for IEEE128 support in libm:
429        AC_CHECK_LIB(m, __frexpieee128,
430                     [ac_ldbl_ieee128_in_libc=yes],
431                     [ac_ldbl_ieee128_in_libc=no])
432        if test $ac_ldbl_ieee128_in_libc = yes; then
433          # Determine which long double format is the compiler's default:
434          AC_TRY_COMPILE(, [
435            #ifndef __LONG_DOUBLE_IEEE128__
436            #error compiler defaults to ibm128
437            #endif
438          ], [ac_ldbl_ieee128_default=yes], [ac_ldbl_ieee128_default=no])
439          # Library objects should use default long double format.
440          if test "$ac_ldbl_ieee128_default" = yes; then
441            LONG_DOUBLE_128_FLAGS="-mno-gnu-attribute"
442            # Except for the ones that explicitly use these flags:
443            LONG_DOUBLE_ALT128_COMPAT_FLAGS="-mabi=ibmlongdouble -mno-gnu-attribute -Wno-psabi"
444          else
445            LONG_DOUBLE_128_FLAGS="-mno-gnu-attribute"
446            LONG_DOUBLE_ALT128_COMPAT_FLAGS="-mabi=ieeelongdouble -mno-gnu-attribute -Wno-psabi"
447          fi
448          AC_DEFINE([_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT],1,
449                [Define if compatibility should be provided for alternative 128-bit long double formats.])
450          port_specific_symbol_files="$port_specific_symbol_files \$(top_srcdir)/config/os/gnu-linux/ldbl-ieee128-extra.ver"
451          ac_ldbl_alt128_compat=yes
452        else
453          ac_ldbl_alt128_compat=no
454        fi
455	;;
456    esac
457  fi
458esac
459AC_SUBST(LONG_DOUBLE_COMPAT_FLAGS)
460AC_SUBST(LONG_DOUBLE_128_FLAGS)
461AC_SUBST(LONG_DOUBLE_ALT128_COMPAT_FLAGS)
462GLIBCXX_CONDITIONAL(GLIBCXX_LDBL_COMPAT, test $ac_ldbl_compat = yes)
463GLIBCXX_CONDITIONAL(GLIBCXX_LDBL_ALT128_COMPAT, test $ac_ldbl_alt128_compat = yes)
464
465# Check if assembler supports disabling hardware capability support.
466GCC_CHECK_ASSEMBLER_HWCAP
467
468# Check if assembler supports rdrand opcode.
469GLIBCXX_CHECK_X86_RDRAND
470# Check if assembler supports rdseed opcode.
471GLIBCXX_CHECK_X86_RDSEED
472
473# This depends on GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE.
474GLIBCXX_CONFIGURE_TESTSUITE
475
476# For gthread support.  Depends on GLIBCXX_ENABLE_SYMVERS.
477GLIBCXX_CHECK_GTHREADS
478
479# For Filesystem TS.
480AC_CHECK_HEADERS([fcntl.h dirent.h sys/statvfs.h utime.h])
481GLIBCXX_ENABLE_FILESYSTEM_TS
482GLIBCXX_CHECK_FILESYSTEM_DEPS
483
484# For Networking TS.
485AC_CHECK_HEADERS([fcntl.h sys/ioctl.h sys/socket.h sys/uio.h poll.h netdb.h arpa/inet.h netinet/in.h netinet/tcp.h])
486
487# For Transactional Memory TS
488GLIBCXX_CHECK_SIZE_T_MANGLING
489
490# Check which release added std::exception_ptr for the target
491GLIBCXX_CHECK_EXCEPTION_PTR_SYMVER
492
493# Define documentation rules conditionally.
494
495# See if makeinfo has been installed and is modern enough
496# that we can use it.
497ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version],
498		   [GNU texinfo.* \([0-9][0-9.]*\)],
499		   [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
500AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes")
501
502# Check for doxygen
503AC_CHECK_PROG([DOXYGEN], doxygen, yes, no)
504AC_CHECK_PROG([DOT], dot, yes, no)
505
506# Check for docbook
507AC_CHECK_PROG([XMLCATALOG], xmlcatalog, yes, no)
508AC_CHECK_PROG([XSLTPROC], xsltproc, yes, no)
509AC_CHECK_PROG([XMLLINT], xmllint, yes, no)
510GLIBCXX_CONFIGURE_DOCBOOK
511
512# Check for xml/html dependencies.
513AM_CONDITIONAL(BUILD_XML,
514	       test $ac_cv_prog_DOXYGEN = "yes" &&
515	       test $ac_cv_prog_DOT = "yes" &&
516	       test $ac_cv_prog_XSLTPROC = "yes" &&
517	       test $ac_cv_prog_XMLLINT = "yes" &&
518	       test $glibcxx_stylesheets = "yes")
519
520AM_CONDITIONAL(BUILD_HTML,
521	       test $ac_cv_prog_DOXYGEN = "yes" &&
522	       test $ac_cv_prog_DOT = "yes" &&
523	       test $ac_cv_prog_XSLTPROC = "yes" &&
524	       test $ac_cv_prog_XMLLINT = "yes" &&
525	       test $glibcxx_stylesheets = "yes")
526
527# Check for man dependencies.
528AM_CONDITIONAL(BUILD_MAN,
529	       test $ac_cv_prog_DOXYGEN = "yes" &&
530	       test $ac_cv_prog_DOT = "yes")
531
532# Check for pdf dependencies.
533AC_CHECK_PROG([DBLATEX], dblatex, yes, no)
534AC_CHECK_PROG([PDFLATEX], pdflatex, yes, no)
535AM_CONDITIONAL(BUILD_PDF,
536	       test $ac_cv_prog_DOXYGEN = "yes" &&
537	       test $ac_cv_prog_DOT = "yes" &&
538	       test $ac_cv_prog_XSLTPROC = "yes" &&
539	       test $ac_cv_prog_XMLLINT = "yes" &&
540	       test $ac_cv_prog_DBLATEX = "yes" &&
541	       test $ac_cv_prog_PDFLATEX = "yes")
542
543case "$build" in
544 *-*-darwin* ) glibcxx_include_dir_notparallel=yes ;;
545 * ) glibcxx_include_dir_notparallel=no ;;
546esac
547AM_CONDITIONAL(INCLUDE_DIR_NOTPARALLEL,
548               test $glibcxx_include_dir_notparallel = "yes")
549
550# Propagate the target-specific source directories through the build chain.
551ATOMICITY_SRCDIR=config/${atomicity_dir}
552ATOMIC_WORD_SRCDIR=config/${atomic_word_dir}
553ATOMIC_FLAGS=${atomic_flags}
554CPU_DEFINES_SRCDIR=config/${cpu_defines_dir}
555OS_INC_SRCDIR=config/${os_include_dir}
556ERROR_CONSTANTS_SRCDIR=config/${error_constants_dir}
557ABI_TWEAKS_SRCDIR=config/${abi_tweaks_dir}
558CPU_OPT_EXT_RANDOM=config/${cpu_opt_ext_random}
559CPU_OPT_BITS_RANDOM=config/${cpu_opt_bits_random}
560AC_SUBST(ATOMICITY_SRCDIR)
561AC_SUBST(ATOMIC_WORD_SRCDIR)
562AC_SUBST(ATOMIC_FLAGS)
563AC_SUBST(CPU_DEFINES_SRCDIR)
564AC_SUBST(ABI_TWEAKS_SRCDIR)
565AC_SUBST(OS_INC_SRCDIR)
566AC_SUBST(ERROR_CONSTANTS_SRCDIR)
567AC_SUBST(CPU_OPT_EXT_RANDOM)
568AC_SUBST(CPU_OPT_BITS_RANDOM)
569
570# Conditionalize the makefile for this target machine.
571tmake_file_=
572for f in ${tmake_file}
573do
574	if test -f ${srcdir}/config/$f
575	then
576		tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
577	fi
578done
579tmake_file="${tmake_file_}"
580AC_SUBST(tmake_file)
581
582# Add CET specific flags if Intel CET is enabled.
583GCC_CET_FLAGS(CET_FLAGS)
584EXTRA_CXX_FLAGS="$EXTRA_CXX_FLAGS $CET_FLAGS"
585EXTRA_CFLAGS="$EXTRA_CFLAGS $CET_FLAGS"
586AC_SUBST(EXTRA_CFLAGS)
587AC_SUBST(EXTRA_CXX_FLAGS)
588
589# Determine cross-compile flags and AM_CONDITIONALs.
590#AC_SUBST(GLIBCXX_IS_NATIVE)
591#AM_CONDITIONAL(CANADIAN, test $CANADIAN = yes)
592GLIBCXX_EVALUATE_CONDITIONALS
593
594AC_CACHE_SAVE
595
596if test ${multilib} = yes; then
597  multilib_arg="--enable-multilib"
598else
599  multilib_arg=
600fi
601
602# Export all the install information.
603GLIBCXX_EXPORT_INSTALL_INFO
604
605# Export all the include and flag information to Makefiles.
606GLIBCXX_EXPORT_INCLUDES
607GLIBCXX_EXPORT_FLAGS
608
609# Determine what GCC version number to use in filesystem paths.
610GCC_BASE_VER
611
612dnl In autoconf 2.5x, AC_OUTPUT is replaced by four AC_CONFIG_* macros,
613dnl which can all be called multiple times as needed, plus one (different)
614dnl AC_OUTPUT macro.  This one lists the files to be created:
615AC_CONFIG_FILES(Makefile)
616AC_CONFIG_FILES([scripts/testsuite_flags],[chmod +x scripts/testsuite_flags])
617AC_CONFIG_FILES([scripts/extract_symvers],[chmod +x scripts/extract_symvers])
618AC_CONFIG_FILES([doc/xsl/customization.xsl])
619
620# Multilibs need MULTISUBDIR defined correctly in certain makefiles so
621# that multilib installs will end up installed in the correct place.
622# The testsuite needs it for multilib-aware ABI baseline files.
623# To work around this not being passed down from config-ml.in ->
624# srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
625# append it here.  Only modify Makefiles that have just been created.
626#
627# Also, get rid of this simulated-VPATH thing that automake does.
628AC_CONFIG_FILES(AC_FOREACH([DIR], glibcxx_SUBDIRS, [DIR/Makefile ]),
629  [cat > vpsed$$ << \_EOF
630s!`test -f '$<' || echo '$(srcdir)/'`!!
631_EOF
632   sed -f vpsed$$ $ac_file > tmp$$
633   mv tmp$$ $ac_file
634   rm vpsed$$
635   echo 'MULTISUBDIR =' >> $ac_file
636   ml_norecursion=yes
637   . ${multi_basedir}/config-ml.in
638   AS_UNSET([ml_norecursion])
639])
640
641AC_CONFIG_COMMANDS([generate-headers],
642  [(cd include && ${MAKE-make} pch_build= )])
643
644dnl And this actually makes things happen:
645AC_OUTPUT
646