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44 lines
1.2 KiB
44 lines
1.2 KiB
14 years ago
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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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])
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