annotate libgomp/configure.ac @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 1830386684a0
children
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1 # Process this file with autoconf to produce a configure script, like so:
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2 # aclocal -I ../config && autoconf && autoheader && automake
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3
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4 AC_INIT([GNU Offloading and Multi Processing Runtime Library], 1.0,,[libgomp])
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5 AC_CONFIG_HEADER(config.h)
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6
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7 # -------
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8 # Options
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9 # -------
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10
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11 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
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12 LIBGOMP_ENABLE(version-specific-runtime-libs, no, ,
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13 [Specify that runtime libraries should be installed in a compiler-specific directory],
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14 permit yes|no)
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15 AC_MSG_RESULT($enable_version_specific_runtime_libs)
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16
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17 # We would like our source tree to be readonly. However when releases or
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18 # pre-releases are generated, the flex/bison generated files as well as the
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19 # various formats of manuals need to be included along with the rest of the
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20 # sources. Therefore we have --enable-generated-files-in-srcdir to do
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21 # just that.
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22 AC_MSG_CHECKING([for --enable-generated-files-in-srcdir])
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23 LIBGOMP_ENABLE(generated-files-in-srcdir, no, ,
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24 [put copies of generated files in source dir intended for creating source
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25 tarballs for users without texinfo bison or flex.],
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26 permit yes|no)
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27 AC_MSG_RESULT($enable_generated_files_in_srcdir)
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28 AM_CONDITIONAL(GENINSRC, test "$enable_generated_files_in_srcdir" = yes)
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31 # -------
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32 # -------
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33
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34 # Gets build, host, target, *_vendor, *_cpu, *_os, etc.
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35 #
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36 # You will slowly go insane if you do not grok the following fact: when
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37 # building this library, the top-level /target/ becomes the library's /host/.
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38 #
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39 # configure then causes --target to default to --host, exactly like any
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40 # other package using autoconf. Therefore, 'target' and 'host' will
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41 # always be the same. This makes sense both for native and cross compilers
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42 # just think about it for a little while. :-)
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43 #
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44 # Also, if this library is being configured as part of a cross compiler, the
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45 # top-level configure script will pass the "real" host as $with_cross_host.
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46 #
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47 # Do not delete or change the following two lines. For why, see
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48 # http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
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49 AC_CANONICAL_SYSTEM
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50 target_alias=${target_alias-$host_alias}
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51
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52 # Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the
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53 # following is magically included in AUTOMAKE_OPTIONS in each Makefile.am.
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54 # 1.9.0: minimum required version
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55 # no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch
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56 # of other PACKAGE_* variables will, however, and there's nothing
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57 # we can do about that; they come from AC_INIT).
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58 # foreign: we don't follow the normal rules for GNU packages (no COPYING
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59 # file in the top srcdir, etc, etc), so stop complaining.
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60 # no-dist: we don't want 'dist' and related rules.
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61 # -Wall: turns on all automake warnings...
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62 # -Wno-portability: ...except this one, since GNU make is required.
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63 # -Wno-override: ... and this one, since we do want this in testsuite.
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64 AM_INIT_AUTOMAKE([1.9.0 foreign no-dist -Wall -Wno-portability -Wno-override])
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65 AM_ENABLE_MULTILIB(, ..)
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66
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67 GCC_WITH_TOOLEXECLIBDIR
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68
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69 # Calculate toolexeclibdir
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70 # Also toolexecdir, though it's only used in toolexeclibdir
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71 case ${enable_version_specific_runtime_libs} in
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72 yes)
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73 # Need the gcc compiler version to know where to install libraries
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74 # and header files if --enable-version-specific-runtime-libs option
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75 # is selected.
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76 toolexecdir='$(libdir)/gcc/$(target_alias)'
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77 toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
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78 ;;
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79 no)
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80 if test -n "$with_cross_host" &&
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81 test x"$with_cross_host" != x"no"; then
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82 # Install a library built with a cross compiler in tooldir, not libdir.
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83 toolexecdir='$(exec_prefix)/$(target_alias)'
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84 case ${with_toolexeclibdir} in
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85 no)
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86 toolexeclibdir='$(toolexecdir)/lib'
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87 ;;
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88 *)
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89 toolexeclibdir=${with_toolexeclibdir}
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90 ;;
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91 esac
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92 else
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93 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
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94 toolexeclibdir='$(libdir)'
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95 fi
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96 multi_os_directory=`$CC -print-multi-os-directory`
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97 case $multi_os_directory in
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98 .) ;; # Avoid trailing /.
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99 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
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100 esac
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101 ;;
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102 esac
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103 AC_SUBST(toolexecdir)
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104 AC_SUBST(toolexeclibdir)
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105
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106 # Check the compiler.
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107 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
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108 # We must force CC to /not/ be precious variables; otherwise
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109 # the wrong, non-multilib-adjusted value will be used in multilibs.
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110 # As a side effect, we have to subst CFLAGS ourselves.
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111
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112 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
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113 m4_define([_AC_ARG_VAR_PRECIOUS],[])
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114 AC_PROG_CC
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115 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
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116
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117 AC_SUBST(CFLAGS)
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118
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119 # In order to override CFLAGS_FOR_TARGET, all of our special flags go
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120 # in XCFLAGS. But we need them in CFLAGS during configury. So put them
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121 # in both places for now and restore CFLAGS at the end of config.
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122 save_CFLAGS="$CFLAGS"
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123
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124 # Add -Wall -Werror if we are using GCC.
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125 if test "x$GCC" = "xyes"; then
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126 XCFLAGS="$XCFLAGS -Wall -Werror"
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127 fi
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128
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129 # Find other programs we need.
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130 AC_CHECK_TOOL(AR, ar)
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131 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
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132 AC_PATH_PROG(PERL, perl, perl-not-found-in-path-error)
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133 AC_PROG_MAKE_SET
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134 AC_PROG_INSTALL
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135
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136 # See if makeinfo has been installed and is modern enough
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137 # that we can use it.
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138 ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version],
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139 [GNU texinfo.* \([0-9][0-9.]*\)],
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140 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
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141 AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes")
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142
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143
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144 # Configure libtool
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145 AM_PROG_LIBTOOL
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146 ACX_LT_HOST_FLAGS
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147 AC_SUBST(enable_shared)
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148 AC_SUBST(enable_static)
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149
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150 AM_MAINTAINER_MODE
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151
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152 # Create a spec file, so that compile/link tests don't fail
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153 test -f libgfortran.spec || touch libgfortran.spec
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154 FCFLAGS="$FCFLAGS -L."
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155
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156 # We need gfortran to compile parts of the library
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157 # We can't use AC_PROG_FC because it expects a fully working gfortran.
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158 #AC_PROG_FC(gfortran)
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159 case `echo $GFORTRAN` in
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160 -* | no* )
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161 FC=no ;;
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162 *)
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163 set dummy $GFORTRAN; ac_word=$2
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164 if test -x "$ac_word"; then
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165 FC="$GFORTRAN"
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166 else
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167 FC=no
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168 fi ;;
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169 esac
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170 AC_PROG_FC(gfortran)
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171 FCFLAGS="$FCFLAGS -Wall -L../libgfortran"
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172
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173 # For libtool versioning info, format is CURRENT:REVISION:AGE
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174 libtool_VERSION=1:0:0
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175 AC_SUBST(libtool_VERSION)
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176
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177 # Check header files.
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178 AC_STDC_HEADERS
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179 AC_HEADER_TIME
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180 ACX_HEADER_STRING
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181 AC_CHECK_HEADERS(pthread.h unistd.h semaphore.h sys/loadavg.h sys/sysctl.h sys/time.h)
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182
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183 XPCFLAGS=""
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184 case "$host" in
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185 *-*-rtems*)
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186 # RTEMS supports Pthreads, but the library is not available at GCC build time.
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187 ;;
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188 nvptx*-*-* | amdgcn*-*-*)
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189 # NVPTX does not support Pthreads, has its own code replacement.
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190 libgomp_use_pthreads=no
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191 # NVPTX is an accelerator-only target
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192 libgomp_offloaded_only=yes
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193 ;;
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194 *)
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195 # Check to see if -pthread or -lpthread is needed. Prefer the former.
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196 # In case the pthread.h system header is not found, this test will fail.
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197 CFLAGS="$CFLAGS -pthread"
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198 AC_LINK_IFELSE(
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199 [AC_LANG_PROGRAM(
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200 [#include <pthread.h>
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201 void *g(void *d) { return NULL; }],
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202 [pthread_t t; pthread_create(&t,NULL,g,NULL);])],
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203 [XPCFLAGS=" -Wc,-pthread"],
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204 [CFLAGS="$save_CFLAGS" LIBS="-lpthread $LIBS"
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205 AC_LINK_IFELSE(
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206 [AC_LANG_PROGRAM(
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207 [#include <pthread.h>
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208 void *g(void *d) { return NULL; }],
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209 [pthread_t t; pthread_create(&t,NULL,g,NULL);])],
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210 [],
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211 [AC_MSG_ERROR([Pthreads are required to build libgomp])])])
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212 esac
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213
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214 if test x$libgomp_use_pthreads != xno; then
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215 AC_DEFINE(LIBGOMP_USE_PTHREADS, 1,
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216 [Define to 1 if libgomp should use POSIX threads.])
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217 fi
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218
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219 if test x$libgomp_offloaded_only = xyes; then
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220 AC_DEFINE(LIBGOMP_OFFLOADED_ONLY, 1,
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221 [Define to 1 if building libgomp for an accelerator-only target.])
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222 fi
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223
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224 m4_include([plugin/configfrag.ac])
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225
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226 # Check for functions needed.
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227 AC_CHECK_FUNCS(getloadavg clock_gettime strtoull)
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228 AC_CHECK_FUNCS(aligned_alloc posix_memalign memalign _aligned_malloc)
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229
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230 # Check for broken semaphore implementation on darwin.
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231 # sem_init returns: sem_init error: Function not implemented.
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232 case "$host" in
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233 *-darwin*)
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234 AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1,
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235 Define if the POSIX Semaphores do not work on your system.)
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236 ;;
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237 esac
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238
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239 # RTEMS specific checks
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240 case "$host" in
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241 *-*-rtems*)
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242 AC_CHECK_TYPES([struct _Mutex_Control],[],[],[#include <sys/lock.h>])
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243 ;;
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244 esac
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245
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246 GCC_LINUX_FUTEX(:)
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247
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248 # Check for pthread_{,attr_}[sg]etaffinity_np.
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249 AC_LINK_IFELSE(
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250 [AC_LANG_PROGRAM(
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251 [#define _GNU_SOURCE
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252 #include <pthread.h>],
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253 [cpu_set_t cpuset;
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254 pthread_attr_t attr;
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255 pthread_getaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
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256 if (CPU_ISSET (0, &cpuset))
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257 CPU_SET (1, &cpuset);
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258 else
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259 CPU_ZERO (&cpuset);
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260 pthread_setaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
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261 pthread_attr_init (&attr);
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262 pthread_attr_getaffinity_np (&attr, sizeof (cpu_set_t), &cpuset);
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263 pthread_attr_setaffinity_np (&attr, sizeof (cpu_set_t), &cpuset);])],
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264 AC_DEFINE(HAVE_PTHREAD_AFFINITY_NP, 1,
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265 [ Define if pthread_{,attr_}{g,s}etaffinity_np is supported.]))
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266
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267 # At least for glibc, clock_gettime is in librt. But don't pull that
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268 # in if it still doesn't give us the function we want.
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269 if test $ac_cv_func_clock_gettime = no; then
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270 AC_CHECK_LIB(rt, clock_gettime,
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271 [LIBS="-lrt $LIBS"
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272 AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
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273 [Define to 1 if you have the `clock_gettime' function.])])
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274 fi
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275
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276 # Check for uname.
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277 AC_COMPILE_IFELSE(
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278 [AC_LANG_PROGRAM(
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279 [#include <string.h>
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280 #include <stdlib.h>
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281 #include <sys/utsname.h>],
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282 [struct utsname buf;
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283 volatile size_t len = 0;
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284 if (!uname (buf))
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285 len = strlen (buf.nodename);])],
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286 AC_DEFINE(HAVE_UNAME, 1,
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287 [ Define if uname is supported and struct utsname has nodename field.]))
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288
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289 # Check for gethostname.
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290 AC_COMPILE_IFELSE(
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291 [AC_LANG_PROGRAM(
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292 [#include <unistd.h>],
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293 [
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294 changequote(,)dnl
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295 char buf[256];
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296 if (gethostname (buf, sizeof (buf) - 1) == 0)
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297 buf[255] = '\0';
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298 changequote([,])dnl
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299 ])],
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300 AC_DEFINE(HAVE_GETHOSTNAME, 1,
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301 [ Define if gethostname is supported.]))
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302
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303 # Check for getpid.
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304 AC_COMPILE_IFELSE(
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305 [AC_LANG_PROGRAM(
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306 [#include <unistd.h>],
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307 [int pid = getpid ();])],
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308 AC_DEFINE(HAVE_GETPID, 1,
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309 [ Define if getpid is supported.]))
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310
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311 # See if we support thread-local storage.
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312 GCC_CHECK_TLS
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313
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314 # See if we have emulated thread-local storage.
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315 GCC_CHECK_EMUTLS
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316
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317 # See what sort of export controls are available.
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318 LIBGOMP_CHECK_ATTRIBUTE_VISIBILITY
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319 LIBGOMP_CHECK_ATTRIBUTE_DLLEXPORT
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320 LIBGOMP_CHECK_ATTRIBUTE_ALIAS
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321 LIBGOMP_ENABLE_SYMVERS
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322
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323 if test $enable_symvers = gnu; then
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324 AC_DEFINE(LIBGOMP_GNU_SYMBOL_VERSIONING, 1,
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325 [Define to 1 if GNU symbol versioning is used for libgomp.])
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326 fi
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327
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328 # Determine cpu count to limit testsuite parallelism.
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329 AX_COUNT_CPUS
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330 AC_SUBST(CPU_COUNT)
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331
0
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332 # Get target configury.
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333 . ${srcdir}/configure.tgt
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334 CFLAGS="$save_CFLAGS $XCFLAGS"
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335
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336 # Check for __sync_val_compare_and_swap, but only after the target has
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337 # had a chance to set XCFLAGS.
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338 LIBGOMP_CHECK_SYNC_BUILTINS
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339
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340 XCFLAGS="$XCFLAGS$XPCFLAGS"
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341
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342 # Add CET specific flags if CET is enabled
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343 GCC_CET_FLAGS(CET_FLAGS)
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344 XCFLAGS="$XCFLAGS $CET_FLAGS"
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345 FCFLAGS="$FCFLAGS $CET_FLAGS"
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346
0
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347 AC_SUBST(config_path)
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348 AC_SUBST(XCFLAGS)
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349 AC_SUBST(XLDFLAGS)
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350
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351 # Cleanup and exit.
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352 CFLAGS="$save_CFLAGS"
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353 AC_CACHE_SAVE
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354
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355 if test ${multilib} = yes; then
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356 multilib_arg="--enable-multilib"
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357 else
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358 multilib_arg=
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359 fi
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360
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361 # Set up the set of libraries that we need to link against for libgomp.
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362 # Note that the GOMP_SELF_SPEC in gcc.c may force -pthread,
0
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363 # which will force linkage against -lpthread (or equivalent for the system).
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364 # That's not 100% ideal, but about the best we can do easily.
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365 if test $enable_shared = yes; then
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366 link_gomp="-lgomp %{static: $LIBS}"
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367 else
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368 link_gomp="-lgomp $LIBS"
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369 fi
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370 AC_SUBST(link_gomp)
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371
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372 AM_CONDITIONAL([USE_FORTRAN], [test "$ac_cv_fc_compiler_gnu" = yes])
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373
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374 # ??? 2006-01-24: Paulo committed to asking autoconf folk to document
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375 # and export AC_COMPUTE_INT. If that happens, then we'll need to remove
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376 # the underscore here and update the PREREQ. If it doesn't, then we'll
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377 # need to copy this macro to our acinclude.m4.
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378 save_CFLAGS="$CFLAGS"
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379 for i in $config_path; do
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380 if test -f $srcdir/config/$i/omp-lock.h; then
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381 CFLAGS="$CFLAGS -include confdefs.h -include $srcdir/config/$i/omp-lock.h"
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382 break
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383 fi
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384 done
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385
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386 _AC_COMPUTE_INT([sizeof (omp_lock_t)], [OMP_LOCK_SIZE],,
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387 [AC_MSG_ERROR([unsupported system, cannot find sizeof (omp_lock_t)])])
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388 _AC_COMPUTE_INT([__alignof (omp_lock_t)], [OMP_LOCK_ALIGN])
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389 _AC_COMPUTE_INT([sizeof (omp_nest_lock_t)], [OMP_NEST_LOCK_SIZE])
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390 _AC_COMPUTE_INT([__alignof (omp_nest_lock_t)], [OMP_NEST_LOCK_ALIGN])
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391 _AC_COMPUTE_INT([sizeof (omp_lock_25_t)], [OMP_LOCK_25_SIZE],,
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392 [AC_MSG_ERROR([unsupported system, cannot find sizeof (omp_lock_25_t)])])
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393 _AC_COMPUTE_INT([__alignof (omp_lock_25_t)], [OMP_LOCK_25_ALIGN])
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394 _AC_COMPUTE_INT([sizeof (omp_nest_lock_25_t)], [OMP_NEST_LOCK_25_SIZE])
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395 _AC_COMPUTE_INT([__alignof (omp_nest_lock_25_t)], [OMP_NEST_LOCK_25_ALIGN])
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396
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397 # If the lock fits in an integer, then arrange for Fortran to use that
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398 # integer. If it doesn't, then arrange for Fortran to use a pointer.
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399 # Except that we don't have a way at present to multi-lib the installed
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400 # Fortran modules, so we assume 8 bytes for pointers, regardless of the
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401 # actual target.
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402 OMP_LOCK_KIND=$OMP_LOCK_SIZE
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403 OMP_NEST_LOCK_KIND=$OMP_NEST_LOCK_SIZE
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404 if test $OMP_LOCK_SIZE -gt 8 || test $OMP_LOCK_ALIGN -gt $OMP_LOCK_SIZE; then
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405 OMP_LOCK_KIND=8
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406 fi
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407 if test $OMP_NEST_LOCK_SIZE -gt 8 || test $OMP_NEST_LOCK_ALIGN -gt $OMP_NEST_LOCK_SIZE; then
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408 OMP_NEST_LOCK_KIND=8
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409 fi
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410 OMP_LOCK_25_KIND=$OMP_LOCK_25_SIZE
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411 OMP_NEST_LOCK_25_KIND=$OMP_NEST_LOCK_25_SIZE
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412 if test $OMP_LOCK_25_SIZE -gt 8 || test $OMP_LOCK_25_ALIGN -gt $OMP_LOCK_25_SIZE; then
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413 OMP_LOCK_25_KIND=8
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414 fi
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415 if test $OMP_NEST_LOCK_25_SIZE -gt 8 || test $OMP_NEST_LOCK_25_ALIGN -gt $OMP_NEST_LOCK_25_SIZE; then
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416 OMP_NEST_LOCK_25_KIND=8
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417 fi
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418
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419 AC_SUBST(OMP_LOCK_SIZE)
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420 AC_SUBST(OMP_LOCK_ALIGN)
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421 AC_SUBST(OMP_NEST_LOCK_SIZE)
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422 AC_SUBST(OMP_NEST_LOCK_ALIGN)
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423 AC_SUBST(OMP_LOCK_KIND)
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424 AC_SUBST(OMP_NEST_LOCK_KIND)
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425 AC_SUBST(OMP_LOCK_25_SIZE)
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426 AC_SUBST(OMP_LOCK_25_ALIGN)
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427 AC_SUBST(OMP_NEST_LOCK_25_SIZE)
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428 AC_SUBST(OMP_NEST_LOCK_25_ALIGN)
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429 AC_SUBST(OMP_LOCK_25_KIND)
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430 AC_SUBST(OMP_NEST_LOCK_25_KIND)
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431 CFLAGS="$save_CFLAGS"
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432
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433 # Determine what GCC version number to use in filesystem paths.
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434 GCC_BASE_VER
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435
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436 AC_CONFIG_FILES(omp.h omp_lib.h omp_lib.f90 libgomp_f.h)
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437 AC_CONFIG_FILES(Makefile testsuite/Makefile libgomp.spec)
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438 AC_CONFIG_FILES([testsuite/libgomp-test-support.pt.exp:testsuite/libgomp-test-support.exp.in])
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439 AC_OUTPUT