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  • Committer: Braiam Peguero
  • Date: 2011-10-09 06:47:47 UTC
  • Revision ID: braiamp@gmail.com-20111009064747-iju2nhzrh6ya56zs
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m4/sigaction.m4
 
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# sigaction.m4 serial 6
 
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dnl Copyright (C) 2008-2011 Free Software Foundation, Inc.
 
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dnl This file is free software; the Free Software Foundation
 
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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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# Determine if sigaction interface is present.
 
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AC_DEFUN([gl_SIGACTION],
 
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[
 
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  AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
 
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  AC_CHECK_FUNCS_ONCE([sigaction])
 
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  if test $ac_cv_func_sigaction = yes; then
 
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    AC_CHECK_MEMBERS([struct sigaction.sa_sigaction], , ,
 
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                     [[#include <signal.h>]])
 
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    if test $ac_cv_member_struct_sigaction_sa_sigaction = no; then
 
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      HAVE_STRUCT_SIGACTION_SA_SIGACTION=0
 
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    fi
 
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  else
 
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    HAVE_SIGACTION=0
 
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  fi
 
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])
 
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# Prerequisites of the part of lib/signal.in.h and of lib/sigaction.c.
 
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AC_DEFUN([gl_PREREQ_SIGACTION],
 
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[
 
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  AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
 
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  AC_REQUIRE([AC_C_RESTRICT])
 
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  AC_REQUIRE([AC_TYPE_UID_T])
 
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  AC_REQUIRE([gl_PREREQ_SIG_HANDLER_H])
 
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  AC_CHECK_FUNCS_ONCE([sigaltstack siginterrupt])
 
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  AC_CHECK_TYPES([siginfo_t], [], [], [[
 
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#include <signal.h>
 
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  ]])
 
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  if test $ac_cv_type_siginfo_t = no; then
 
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    HAVE_SIGINFO_T=0
 
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  fi
 
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])
 
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# Prerequisites of lib/sig-handler.h.
 
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AC_DEFUN([gl_PREREQ_SIG_HANDLER_H],
 
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[
 
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  AC_REQUIRE([AC_C_INLINE])
 
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])