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=$LD |
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12 | |
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13 | PACKAGE=libstdc++ |
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14 | AC_SUBST(PACKAGE) |
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15 | # For libtool versioning info, format is CURRENT:REVISION:AGE |
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16 | libtool_VERSION=5:1:0 |
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17 | AC_SUBST(libtool_VERSION) |
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18 | |
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19 | GLIBCPP_TOPREL_CONFIGURE |
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20 | |
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21 | # Gets build, host, target, *_vendor, *_cpu, *_os, etc. |
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22 | # AC 2.5x sets target_alias iff the user specified --target, but we use it |
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23 | # everywhere, so we set it here just to be sure. In AC 2.13 |
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24 | # AC_CANONICAL_TARGET was known as AC_CANONICAL_SYSTEM. |
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25 | AC_CANONICAL_SYSTEM |
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26 | target_alias=${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 | AC_LC_MESSAGES |
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283 | |
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284 | AC_TRY_COMPILE([ |
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285 | #include <setjmp.h> |
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286 | ], [sigjmp_buf env; while (! sigsetjmp (env, 1)) siglongjmp (env, 1);], |
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287 | [AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ]) |
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288 | ]) |
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289 | |
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290 | AC_FUNC_MMAP |
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291 | |
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292 | # Establish limits on memory usage during 'make check' |
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293 | GLIBCPP_CONFIGURE_TESTSUITE |
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294 | fi |
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295 | |
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296 | # This depends on the possibly-skipped linker test above. |
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297 | GLIBCPP_ENABLE_SYMVERS([yes]) |
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298 | |
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299 | # Propagate the target-specific source directories through the build chain. |
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300 | OS_INC_SRCDIR=$os_include_dir/bits |
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301 | ATOMICITY_INC_SRCDIR=$ATOMICITYH/bits |
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302 | CPU_LIMITS_INC_SRCDIR=$CPULIMITSH/bits |
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303 | AC_SUBST(OS_INC_SRCDIR) |
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304 | AC_SUBST(ATOMICITY_INC_SRCDIR) |
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305 | AC_SUBST(CPU_LIMITS_INC_SRCDIR) |
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306 | |
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307 | # Set up cross-compile flags |
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308 | AC_SUBST(GLIBCPP_IS_CROSS_COMPILING) |
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309 | AM_CONDITIONAL(CANADIAN, test "$CANADIAN" = yes) |
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310 | |
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311 | AC_CACHE_SAVE |
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312 | |
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313 | if test "${multilib}" = "yes"; then |
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314 | multilib_arg="--enable-multilib" |
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315 | else |
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316 | multilib_arg= |
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317 | fi |
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318 | |
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319 | # Export all the install information |
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320 | GLIBCPP_EXPORT_INSTALL_INFO |
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321 | |
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322 | # Export all the include and flag information to makefiles. |
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323 | GLIBCPP_EXPORT_INCLUDES |
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324 | GLIBCPP_EXPORT_FLAGS |
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325 | |
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326 | if ${CONFIG_SHELL-/bin/sh} ./libtool --tag CXX --features | |
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327 | grep "enable shared" > /dev/null; then |
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328 | LIBSUPCXX_PICFLAGS=-prefer-pic |
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329 | else |
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330 | LIBSUPCXX_PICFLAGS= |
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331 | fi |
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332 | AC_SUBST(LIBSUPCXX_PICFLAGS) |
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333 | |
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334 | # Generate the various Makefiles, include files, and scripts. |
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335 | # NB: Multilibs need MULTISUBDIR defined correctly in src/Makefile.am |
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336 | # and libsupc++/Makefile.am so that multilib installs will end up |
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337 | # installed in the correct place. To work around this not being passed |
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338 | # down from config-ml.in -> top_srcdir/Makefile.am -> |
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339 | # top_srcdir/{src,libsupc++}/Makefile.am, manually append it here. |
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340 | AC_OUTPUT(Makefile \ |
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341 | include/Makefile src/Makefile \ |
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342 | libmath/Makefile libio/Makefile libsupc++/Makefile \ |
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343 | po/Makefile testsuite/Makefile mkcheck testsuite_flags, |
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344 | [if test -n "$CONFIG_FILES"; then |
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345 | LD="${ORIGINAL_LD_FOR_MULTILIBS}" |
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346 | ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in |
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347 | grep '^MULTISUBDIR =' Makefile >> src/Makefile |
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348 | grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile |
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349 | fi |
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350 | chmod +x mkcheck |
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351 | chmod +x testsuite_flags |
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352 | ], |
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353 | srcdir=${srcdir} |
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354 | host=${host} |
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355 | target=${target} |
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356 | with_multisubdir=${with_multisubdir} |
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357 | ac_configure_args="${multilib_arg} ${ac_configure_args}" |
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358 | CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} |
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359 | glibcpp_basedir=${glibcpp_basedir} |
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360 | CC="${CC}" |
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361 | CXX="${CXX}" |
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362 | ) |
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363 | dnl In autoconf 2.5x, AC_OUTPUT is replaced by three AC_ macros: |
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364 | dnl AC_CONFIG_FILES(Makefile \ |
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365 | dnl include/Makefile src/Makefile \ |
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366 | dnl libmath/Makefile libio/Makefile libsupc++/Makefile \ |
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367 | dnl po/Makefile testsuite/Makefile mkcheck testsuite_flags) |
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368 | dnl AC_CONFIG_COMMANDS([default], |
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369 | dnl [if test -n "$CONFIG_FILES"; then |
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370 | dnl ac_file=Makefile . ${glibcpp_basedir}/../config-ml.in |
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371 | dnl grep '^MULTISUBDIR =' Makefile >> src/Makefile |
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372 | dnl grep '^MULTISUBDIR =' Makefile >> libsupc++/Makefile |
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373 | dnl fi |
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374 | dnl chmod +x mkcheck |
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375 | dnl chmod +x testsuite_flags |
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376 | dnl ], |
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377 | dnl srcdir=${srcdir} |
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378 | dnl host=${host} |
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379 | dnl target=${target} |
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380 | dnl with_multisubdir=${with_multisubdir} |
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381 | dnl ac_configure_args="${multilib_arg} ${ac_configure_args}" |
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382 | dnl CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} |
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383 | dnl glibcpp_basedir=${glibcpp_basedir} |
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384 | dnl CC="${CC}" |
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385 | dnl CXX="${CXX}" |
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386 | dnl ) |
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387 | dnl AC_OUTPUT |
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388 | |
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389 | |
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390 | # Sanity checking & User-visible messages. |
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391 | # Checks down here, otherwise they get scrolled off before |
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392 | # the user will notice. |
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393 | |
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394 | # Trying to get more people to read documentation. Possibly remove |
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395 | # check and warn all the time. There is no "informational" AC_MSG_ |
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396 | # macro, so these are going to be printed even when --quiet/--silent |
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397 | # is given. |
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398 | if test ! -f stamp-sanity-warned; then |
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399 | touch stamp-sanity-warned |
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400 | echo "" |
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401 | echo "Please make certain that you read the installation information here:" |
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402 | echo " faster => ${srcdir}/docs/html/install.html" |
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403 | echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/install.html>" |
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404 | echo "" |
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405 | echo "and the configuration information here:" |
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406 | echo " faster => ${srcdir}/docs/html/configopts.html" |
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407 | echo " slower => <URL:http://gcc.gnu.org/onlinedocs/libstdc++/configopts.html>" |
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408 | echo "" |
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409 | echo "before proceeding with ${_cv_gnu_make_command}." |
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410 | echo "" |
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411 | fi |
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