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  • Committer: Brian Aker
  • Date: 2009-01-24 09:43:35 UTC
  • Revision ID: brian@gir-3.local-20090124094335-6qdtvc35gl5fvivz
Adding in an example singe thread scheduler

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m4/extensions.m4
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dnl  Copyright (C) 2009 Sun Microsystems
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dnl This file is free software; Sun Microsystems
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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AC_DEFUN([PANDORA_EXTENSIONS],[
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  m4_ifdef([AC_USE_SYSTEM_EXTENSIONS],
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    [AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])],
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    [AC_REQUIRE([AC_GNU_SOURCE])])
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])
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AC_DEFUN([gl_USE_SYSTEM_EXTENSIONS],[
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  AC_REQUIRE([PANDORA_EXTENSIONS])
 
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dnl Provide AC_USE_SYSTEM_EXTENSIONS for old autoconf machines.
 
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AC_DEFUN([ACX_USE_SYSTEM_EXTENSIONS],[
 
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  ifdef([AC_USE_SYSTEM_EXTENSIONS],[
 
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    AC_USE_SYSTEM_EXTENSIONS
 
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  ],[
 
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    AC_BEFORE([$0], [AC_COMPILE_IFELSE])
 
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    AC_BEFORE([$0], [AC_RUN_IFELSE])
 
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    AC_REQUIRE([AC_GNU_SOURCE])
 
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    AC_REQUIRE([AC_AIX])
 
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    AC_REQUIRE([AC_MINIX])
 
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    AH_VERBATIM([__EXTENSIONS__],
 
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[/* Enable extensions on Solaris.  */
 
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#ifndef __EXTENSIONS__
 
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# undef __EXTENSIONS__
 
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#endif
 
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#ifndef _POSIX_PTHREAD_SEMANTICS
 
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# undef _POSIX_PTHREAD_SEMANTICS
 
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#endif
 
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#ifndef _TANDEM_SOURCE
 
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# undef _TANDEM_SOURCE
 
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#endif])
 
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    AC_CACHE_CHECK([whether it is safe to define __EXTENSIONS__],
 
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      [ac_cv_safe_to_define___extensions__],
 
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      [AC_COMPILE_IFELSE(
 
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         [AC_LANG_PROGRAM([
 
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#           define __EXTENSIONS__ 1
 
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            AC_INCLUDES_DEFAULT])],
 
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         [ac_cv_safe_to_define___extensions__=yes],
 
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         [ac_cv_safe_to_define___extensions__=no])])
 
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    test $ac_cv_safe_to_define___extensions__ = yes &&
 
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      AC_DEFINE([__EXTENSIONS__])
 
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    AC_DEFINE([_POSIX_PTHREAD_SEMANTICS])
 
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    AC_DEFINE([_TANDEM_SOURCE])
 
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  ])
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])