| 1 | # Process this file with autoconf to produce a configure script, like so:
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| 2 | # aclocal && autoconf && autoheader && automake
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| 3 |
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| 4 | AC_PREREQ(2.13)
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| 5 | AC_INIT(src/ios.cc)
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| 6 |
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| 7 | # This works around the fact that libtool configuration may change LD
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| 8 | # for this particular configuration, but some shells, instead of
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| 9 | # keeping the changes in LD private, export them just because LD is
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| 10 | # exported.
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| 11 | ORIGINAL_LD_FOR_MULTILIBS=$LD
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| 12 |
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| 13 | PACKAGE=libstdc++
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| 14 | AC_SUBST(PACKAGE)
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| 15 | # For libtool versioning info, format is CURRENT:REVISION:AGE
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| 16 | libtool_VERSION=5:2:0
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| 17 | AC_SUBST(libtool_VERSION)
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| 18 |
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| 19 | GLIBCPP_TOPREL_CONFIGURE
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| 20 |
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| 21 | # Gets build, host, target, *_vendor, *_cpu, *_os, etc.
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| 22 | # AC 2.5x sets target_alias iff the user specified --target, but we use it
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| 23 | # everywhere, so we set it here just to be sure. In AC 2.13
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| 24 | # AC_CANONICAL_TARGET was known as AC_CANONICAL_SYSTEM.
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| 25 | AC_CANONICAL_SYSTEM
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| 26 | target_alias=${target_alias-$target}
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| 27 | AC_SUBST(target_alias)
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| 28 |
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| 29 | # Runs configure.host and configure.target, as well as finds CC, CXX
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| 30 | # and assorted other critical bits. Have to run this before the
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| 31 | # GLIBCPP_ENABLE_* macros below.
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| 32 | GLIBCPP_CONFIGURE(.)
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| 33 |
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| 34 | AM_INIT_AUTOMAKE($PACKAGE, $gcc_version)
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| 35 | AM_CONFIG_HEADER(config.h)
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| 36 |
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| 37 | AC_LIBTOOL_DLOPEN
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| 38 | AM_PROG_LIBTOOL
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| 39 | AC_SUBST(enable_shared)
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| 40 | AC_SUBST(enable_static)
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| 41 |
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| 42 | # Check for c++ or library specific bits that don't require linking.
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| 43 | #GLIBCPP_CHECK_COMPILER_VERSION
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| 44 | GLIBCPP_CHECK_GNU_MAKE
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| 45 |
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| 46 | # Enable all the variable C++ stuff. C_MBCHAR must come early.
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| 47 | GLIBCPP_ENABLE_DEBUG($USE_MAINTAINER_MODE)
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| 48 | GLIBCPP_ENABLE_CSTDIO
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| 49 | GLIBCPP_ENABLE_CLOCALE
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| 50 | GLIBCPP_ENABLE_C_MBCHAR([yes])
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| 51 | GLIBCPP_ENABLE_C99([yes])
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| 52 | GLIBCPP_ENABLE_LONG_LONG([yes])
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| 53 | GLIBCPP_ENABLE_CHEADERS([$c_model])
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| 54 | GLIBCPP_ENABLE_THREADS
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| 55 | GLIBCPP_ENABLE_CXX_FLAGS([none])
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| 56 | GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
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| 57 | GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS
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| 58 | GLIBCPP_ENABLE_CONCEPT_CHECKS
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| 59 |
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| 60 | # Check for headers necessary for libsupc++ using dyn-string.c/cxa_demangle.c
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| 61 | AC_CHECK_HEADERS(string.h stdlib.h)
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| 62 |
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| 63 | if test -n "$with_cross_host" || test x"$build" != x"$host"; then
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| 64 |
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| 65 | # This lets us hard-code the functionality we know
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| 66 | # we'll have in the cross target environment. "Let" is a
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| 67 | # sugar-coated word placed on an especially dull and tedious hack, actually.
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| 68 | # Here's why GLIBCPP_CHECK_MATH_SUPPORT, and other autoconf macros
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| 69 | # that involve linking can't be used:
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| 70 | # "cannot open sim-crt0.o"
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| 71 | # "cannot open crt0.o"
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| 72 | # etc. All this is because there currently exists no unified,
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| 73 | # consistent way for top level CC information to be passed down
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| 74 | # to target directories: newlib includes, newlib linking info,
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| 75 | # libgloss versus newlib crt0.o, etc. When all of this is done, all
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| 76 | # of this hokey, excessive AC_DEFINE junk for crosses can be removed.
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| 77 |
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| 78 | # We are being configured with some form of cross compiler.
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| 79 | GLIBCPP_IS_CROSS_COMPILING=1
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| 80 |
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| 81 | # If Canadian cross, then don't pick up tools from the build
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| 82 | # directory.
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| 83 | if test -n "$with_cross_host" && test x"$build" != x"$with_cross_host"; then
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| 84 | CANADIAN=yes
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| 85 | else
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| 86 | CANADIAN=no
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| 87 | fi
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| 88 |
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| 89 | # Construct crosses by hand, eliminating bits that need ld...
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| 90 | # GLIBCPP_CHECK_COMPILER_FEATURES
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| 91 | # GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
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| 92 | # GLIBCPP_CHECK_MATH_SUPPORT
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| 93 |
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| 94 | case "$target" in
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| 95 | *-linux*)
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| 96 | # Check for available headers.
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| 97 | AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
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| 98 | machine/endian.h machine/param.h sys/machine.h sys/types.h \
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| 99 | fp.h locale.h float.h inttypes.h])
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| 100 | SECTION_FLAGS='-ffunction-sections -fdata-sections'
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| 101 | AC_SUBST(SECTION_FLAGS)
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| 102 | GLIBCPP_CHECK_LINKER_FEATURES
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| 103 | GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
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| 104 | GLIBCPP_CHECK_WCHAR_T_SUPPORT
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| 105 | os_include_dir="config/os/gnu-linux"
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| 106 | AC_DEFINE(HAVE_COPYSIGN)
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| 107 | AC_DEFINE(HAVE_COPYSIGNF)
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| 108 | AC_DEFINE(HAVE_FINITEF)
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| 109 | AC_DEFINE(HAVE_FREXPF)
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| 110 | AC_DEFINE(HAVE_HYPOTF)
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| 111 | AC_DEFINE(HAVE_SINCOS)
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| 112 | AC_DEFINE(HAVE_SINCOSF)
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| 113 | if test x"long_double_math_on_this_cpu" = x"yes"; then
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| 114 | AC_DEFINE(HAVE_HYPOTL)
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| 115 | fi
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| 116 | ;;
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| 117 | *-hpux*)
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| 118 | # Check for available headers.
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| 119 | AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
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| 120 | machine/endian.h machine/param.h sys/machine.h sys/types.h \
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| 121 | fp.h locale.h float.h inttypes.h])
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| 122 | SECTION_FLAGS='-ffunction-sections -fdata-sections'
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| 123 | AC_SUBST(SECTION_FLAGS)
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| 124 | GLIBCPP_CHECK_LINKER_FEATURES
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| 125 | GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
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| 126 | GLIBCPP_CHECK_WCHAR_T_SUPPORT
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| 127 | os_include_dir="config/os/hpux"
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| 128 | AC_DEFINE(HAVE_COPYSIGN)
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| 129 | AC_DEFINE(HAVE_COPYSIGNF)
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| 130 | AC_DEFINE(HAVE_FINITEF)
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| 131 | AC_DEFINE(HAVE_FREXPF)
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| 132 | AC_DEFINE(HAVE_HYPOT)
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| 133 | AC_DEFINE(HAVE_SINCOS)
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| 134 | AC_DEFINE(HAVE_SINCOSF)
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| 135 | ;;
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| 136 | *-netbsd*)
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| 137 | # Check for available headers.
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| 138 | AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
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| 139 | machine/endian.h machine/param.h sys/machine.h sys/types.h \
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| 140 | fp.h locale.h float.h inttypes.h])
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| 141 | SECTION_FLAGS='-ffunction-sections -fdata-sections'
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| 142 | AC_SUBST(SECTION_FLAGS)
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| 143 | GLIBCPP_CHECK_LINKER_FEATURES
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| 144 | GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
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| 145 | GLIBCPP_CHECK_WCHAR_T_SUPPORT
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| 146 | os_include_dir="config/os/bsd/netbsd"
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| 147 | AC_DEFINE(HAVE_COPYSIGN)
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| 148 | AC_DEFINE(HAVE_COPYSIGNF)
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| 149 | AC_DEFINE(HAVE_FINITEF)
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| 150 | AC_DEFINE(HAVE_FREXPF)
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| 151 | AC_DEFINE(HAVE_HYPOTF)
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| 152 | ;;
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| 153 | *-mingw32*)
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| 154 | AC_CHECK_HEADERS([sys/types.h locale.h float.h])
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| 155 | GLIBCPP_CHECK_LINKER_FEATURES
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| 156 | GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
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| 157 | GLIBCPP_CHECK_WCHAR_T_SUPPORT
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| 158 | os_include_dir="config/os/mingw32"
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| 159 | ;;
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| 160 | changequote(,)dnl
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| 161 | *-qnx6.[12]*)
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| 162 | changequote([,])dnl
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| 163 | SECTION_FLAGS='-ffunction-sections -fdata-sections'
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| 164 | AC_SUBST(SECTION_FLAGS)
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| 165 | GLIBCPP_CHECK_LINKER_FEATURES
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| 166 | GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
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| 167 | GLIBCPP_CHECK_WCHAR_T_SUPPORT
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| 168 | os_include_dir="config/os/qnx/qnx6.1"
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| 169 | AC_DEFINE(HAVE_COSF)
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| 170 | AC_DEFINE(HAVE_COSL)
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| 171 | AC_DEFINE(HAVE_COSHF)
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| 172 | AC_DEFINE(HAVE_COSHL)
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| 173 | AC_DEFINE(HAVE_LOGF)
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| 174 | AC_DEFINE(HAVE_LOGL)
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| 175 | AC_DEFINE(HAVE_LOG10F)
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| 176 | AC_DEFINE(HAVE_LOG10L)
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| 177 | AC_DEFINE(HAVE_SINF)
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| 178 | AC_DEFINE(HAVE_SINL)
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| 179 | AC_DEFINE(HAVE_SINHF)
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| 180 | AC_DEFINE(HAVE_SINHL)
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| 181 | ;;
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| 182 | *)
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| 183 | os_include_dir="config/os/newlib"
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| 184 | AC_DEFINE(HAVE_HYPOT)
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| 185 | ;;
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| 186 | esac
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| 187 |
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| 188 | case "$target" in
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| 189 | *-mingw32*)
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| 190 | ;;
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| 191 | *)
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| 192 | # GLIBCPP_CHECK_STDLIB_SUPPORT
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| 193 | AC_DEFINE(HAVE_STRTOF)
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| 194 | AC_DEFINE(HAVE_STRTOLD)
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| 195 | # AC_FUNC_MMAP
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| 196 | AC_DEFINE(HAVE_MMAP)
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| 197 |
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| 198 | AC_DEFINE(HAVE_ACOSF)
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| 199 | AC_DEFINE(HAVE_ASINF)
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| 200 | AC_DEFINE(HAVE_ATAN2F)
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| 201 | AC_DEFINE(HAVE_ATANF)
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| 202 | AC_DEFINE(HAVE_CEILF)
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| 203 | AC_DEFINE(HAVE_COPYSIGN)
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| 204 | AC_DEFINE(HAVE_COPYSIGNF)
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| 205 | AC_DEFINE(HAVE_COSF)
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| 206 | AC_DEFINE(HAVE_COSHF)
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| 207 | AC_DEFINE(HAVE_EXPF)
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| 208 | AC_DEFINE(HAVE_FABSF)
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| 209 | AC_DEFINE(HAVE_FINITE)
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| 210 | AC_DEFINE(HAVE_FINITEF)
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| 211 | AC_DEFINE(HAVE_FLOORF)
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| 212 | AC_DEFINE(HAVE_FMODF)
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| 213 | AC_DEFINE(HAVE_FREXPF)
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| 214 | AC_DEFINE(HAVE_ISINF)
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| 215 | AC_DEFINE(HAVE_ISINFF)
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| 216 | AC_DEFINE(HAVE_ISNAN)
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| 217 | AC_DEFINE(HAVE_ISNANF)
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| 218 | AC_DEFINE(HAVE_LDEXPF)
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| 219 | AC_DEFINE(HAVE_LOG10F)
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| 220 | AC_DEFINE(HAVE_LOGF)
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| 221 | AC_DEFINE(HAVE_MODFF)
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| 222 | AC_DEFINE(HAVE_POWF)
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| 223 | AC_DEFINE(HAVE_SINF)
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| 224 | AC_DEFINE(HAVE_SINHF)
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| 225 | AC_DEFINE(HAVE_SQRTF)
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| 226 | AC_DEFINE(HAVE_TANF)
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| 227 | AC_DEFINE(HAVE_TANHF)
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| 228 | ;;
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| 229 | esac
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| 230 |
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| 231 | # At some point, we should differentiate between architectures
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| 232 | # like x86, which have long double versions, and alpha/powerpc/etc.,
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| 233 | # which don't. For the time being, punt.
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| 234 | if test x"long_double_math_on_this_cpu" = x"yes"; then
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| 235 | AC_DEFINE(HAVE_ACOSL)
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| 236 | AC_DEFINE(HAVE_ASINL)
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| 237 | AC_DEFINE(HAVE_ATAN2L)
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| 238 | AC_DEFINE(HAVE_ATANL)
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| 239 | AC_DEFINE(HAVE_CEILL)
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| 240 | AC_DEFINE(HAVE_COPYSIGNL)
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| 241 | AC_DEFINE(HAVE_COSL)
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| 242 | AC_DEFINE(HAVE_COSHL)
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| 243 | AC_DEFINE(HAVE_EXPL)
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| 244 | AC_DEFINE(HAVE_FABSL)
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| 245 | AC_DEFINE(HAVE_FINITEL)
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| 246 | AC_DEFINE(HAVE_FLOORL)
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| 247 | AC_DEFINE(HAVE_FMODL)
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| 248 | AC_DEFINE(HAVE_FREXPL)
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| 249 | AC_DEFINE(HAVE_ISINFL)
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| 250 | AC_DEFINE(HAVE_ISNANL)
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| 251 | AC_DEFINE(HAVE_LDEXPL)
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| 252 | AC_DEFINE(HAVE_LOG10L)
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| 253 | AC_DEFINE(HAVE_LOGL)
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| 254 | AC_DEFINE(HAVE_MODFL)
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| 255 | AC_DEFINE(HAVE_POWL)
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| 256 | AC_DEFINE(HAVE_SINCOSL)
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| 257 | AC_DEFINE(HAVE_SINL)
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| 258 | AC_DEFINE(HAVE_SINHL)
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| 259 | AC_DEFINE(HAVE_SQRTL)
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| 260 | AC_DEFINE(HAVE_TANL)
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| 261 | AC_DEFINE(HAVE_TANHL)
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| 262 | fi
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| 263 | else
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| 264 |
|
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| 265 | # We are being configured natively. We can do more elaborate tests
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| 266 | # that include AC_TRY_COMPILE now, as the linker is assumed to be
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| 267 | # working.
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| 268 | GLIBCPP_IS_CROSS_COMPILING=0
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| 269 | CANADIAN=no
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| 270 |
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| 271 | # Check for available headers.
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|---|
| 272 | AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
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| 273 | machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h sys/types.h])
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| 274 |
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| 275 | GLIBCPP_CHECK_COMPILER_FEATURES
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| 276 | GLIBCPP_CHECK_LINKER_FEATURES
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| 277 | GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
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| 278 | GLIBCPP_CHECK_MATH_SUPPORT
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| 279 | GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
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| 280 | GLIBCPP_CHECK_WCHAR_T_SUPPORT
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| 281 | GLIBCPP_CHECK_STDLIB_SUPPORT
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| 282 | GLIBCPP_CHECK_UNISTD_SUPPORT
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| 283 | AC_LC_MESSAGES
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| 284 |
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| 285 | AC_TRY_COMPILE([
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| 286 | #include <setjmp.h>
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| 287 | ], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);],
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| 288 | [AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ])
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| 289 | ])
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| 290 |
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| 291 | AC_FUNC_MMAP
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| 292 |
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| 293 | # Establish limits on memory usage during 'make check'
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| 294 | GLIBCPP_CONFIGURE_TESTSUITE
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| 295 | fi
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| 296 |
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| 297 | # This depends on the possibly-skipped linker test above.
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| 298 | GLIBCPP_ENABLE_SYMVERS([yes])
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| 299 |
|
|---|
| 300 | # Propagate the target-specific source directories through the build chain.
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|---|
| 301 | OS_INC_SRCDIR=$os_include_dir/bits
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|---|
| 302 | ATOMICITY_INC_SRCDIR=$ATOMICITYH/bits
|
|---|
| 303 | CPU_LIMITS_INC_SRCDIR=$CPULIMITSH/bits
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|---|
| 304 | AC_SUBST(OS_INC_SRCDIR)
|
|---|
| 305 | AC_SUBST(ATOMICITY_INC_SRCDIR)
|
|---|
| 306 | AC_SUBST(CPU_LIMITS_INC_SRCDIR)
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|---|
| 307 |
|
|---|
| 308 | # Set up cross-compile flags
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|---|
| 309 | AC_SUBST(GLIBCPP_IS_CROSS_COMPILING)
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| 310 | AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes)
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|---|
| 311 |
|
|---|
| 312 | AC_CACHE_SAVE
|
|---|
| 313 |
|
|---|
| 314 | if test "${multilib}" = "yes"; then
|
|---|
| 315 | multilib_arg="--enable-multilib"
|
|---|
| 316 | else
|
|---|
| 317 | multilib_arg=
|
|---|
| 318 | fi
|
|---|
| 319 |
|
|---|
| 320 | # Export all the install information
|
|---|
| 321 | GLIBCPP_EXPORT_INSTALL_INFO
|
|---|
| 322 |
|
|---|
| 323 | # Export all the include and flag information to makefiles.
|
|---|
| 324 | GLIBCPP_EXPORT_INCLUDES
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|---|
| 325 | GLIBCPP_EXPORT_FLAGS
|
|---|
| 326 |
|
|---|
| 327 | if ${CONFIG_SHELL-/bin/sh} ./libtool --tag CXX --features |
|
|---|
| 328 | grep "enable shared" > /dev/null; then
|
|---|
| 329 | LIBSUPCXX_PICFLAGS=-prefer-pic
|
|---|
| 330 | else
|
|---|
| 331 | LIBSUPCXX_PICFLAGS=
|
|---|
| 332 | fi
|
|---|
| 333 | AC_SUBST(LIBSUPCXX_PICFLAGS)
|
|---|
| 334 |
|
|---|
| 335 | # Generate the various Makefiles, include files, and scripts.
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|---|
| 336 | # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am
|
|---|
| 337 | # and libsupc++/Makefile.am so that multilib installs will end up
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|---|
| 338 | # installed in the correct place. To work around this not being passed
|
|---|
| 339 | # down from config-ml.in -> top_srcdir/Makefile.am ->
|
|---|
| 340 | # top_srcdir/{src,libsupc++}/Makefile.am, manually append it here.
|
|---|
| 341 | AC_OUTPUT(Makefile \
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|---|
| 342 | include/Makefile src/Makefile \
|
|---|
| 343 | libmath/Makefile libio/Makefile libsupc++/Makefile \
|
|---|
| 344 | po/Makefile testsuite/Makefile mkcheck testsuite_flags,
|
|---|
| 345 | [if test -n "$CONFIG_FILES"; then
|
|---|
| 346 | LD="${ORIGINAL_LD_FOR_MULTILIBS}"
|
|---|
| 347 | ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
|
|---|
| 348 | grep '^MULTISUBDIR =' Makefile >> src/Makefile
|
|---|
| 349 | grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile
|
|---|
| 350 | fi
|
|---|
| 351 | chmod +x mkcheck
|
|---|
| 352 | chmod +x testsuite_flags
|
|---|
| 353 | ],
|
|---|
| 354 | srcdir=${srcdir}
|
|---|
| 355 | host=${host}
|
|---|
| 356 | target=${target}
|
|---|
| 357 | with_multisubdir=${with_multisubdir}
|
|---|
| 358 | ac_configure_args="${multilib_arg} ${ac_configure_args}"
|
|---|
| 359 | CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
|
|---|
| 360 | glibcpp_basedir=${glibcpp_basedir}
|
|---|
| 361 | CC="${CC}"
|
|---|
| 362 | CXX="${CXX}"
|
|---|
| 363 | )
|
|---|
| 364 | dnl In autoconf 2.5x, AC_OUTPUT is replaced by three AC_ macros:
|
|---|
| 365 | dnl AC_CONFIG_FILES(Makefile \
|
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| 366 | dnl include/Makefile src/Makefile \
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| 367 | dnl libmath/Makefile libio/Makefile libsupc++/Makefile \
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| 368 | dnl po/Makefile testsuite/Makefile mkcheck testsuite_flags)
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| 369 | dnl AC_CONFIG_COMMANDS([default],
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| 370 | dnl [if test -n "$CONFIG_FILES"; then
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| 371 | dnl ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in
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| 372 | dnl grep '^MULTISUBDIR =' Makefile >> src/Makefile
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| 373 | dnl grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile
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| 374 | dnl fi
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| 375 | dnl chmod +x mkcheck
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| 376 | dnl chmod +x testsuite_flags
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| 377 | dnl ],
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| 378 | dnl srcdir=${srcdir}
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| 379 | dnl host=${host}
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| 380 | dnl target=${target}
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| 381 | dnl with_multisubdir=${with_multisubdir}
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| 382 | dnl ac_configure_args="${multilib_arg} ${ac_configure_args}"
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| 383 | dnl CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
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| 384 | dnl glibcpp_basedir=${glibcpp_basedir}
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| 385 | dnl CC="${CC}"
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| 386 | dnl CXX="${CXX}"
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| 387 | dnl )
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| 388 | dnl AC_OUTPUT
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| 389 |
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| 390 |
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| 391 | # Sanity checking & User-visible messages.
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| 392 | # Checks down here, otherwise they get scrolled off before
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| 393 | # the user will notice.
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| 394 |
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| 395 | # Trying to get more people to read documentation. Possibly remove
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| 396 | # check and warn all the time. There is no "informational" AC_MSG_
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| 397 | # macro, so these are going to be printed even when --quiet/--silent
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| 398 | # is given.
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| 399 | if test ! -f stamp-sanity-warned; then
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| 400 | touch stamp-sanity-warned
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| 401 | echo ""
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| 402 | echo "Please make certain that you read the installation information here:"
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| 403 | echo " faster => ${srcdir}/docs/html/install.html"
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|---|
| 404 | echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/install.html>"
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| 405 | echo ""
|
|---|
| 406 | echo "and the configuration information here:"
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|---|
| 407 | echo " faster => ${srcdir}/docs/html/configopts.html"
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|---|
| 408 | echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/configopts.html>"
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|---|
| 409 | echo ""
|
|---|
| 410 | echo "before proceeding with ${_cv_gnu_make_command}."
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|---|
| 411 | echo ""
|
|---|
| 412 | fi
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|---|
