1 # sigaction.m4 serial 2
2 dnl Copyright (C) 2008 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 # Determine if sigaction interface is present.
8 AC_DEFUN([gl_SIGACTION],
10 AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
11 dnl Due to autoconf conventions, we can't tell if HAVE_SIGACTION
12 dnl means we have the type or means we have the function. We assume
13 dnl that all implementations either have both or neither.
14 AC_REPLACE_FUNCS([sigaction])
15 if test $ac_cv_func_sigaction = no ; then
17 AC_SUBST([HAVE_SIGACTION])
22 # Prerequisites of the part of lib/signal.in.h and of lib/sigaction.c.
23 AC_DEFUN([gl_PREREQ_SIGACTION],
25 AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
26 AC_REQUIRE([AC_C_RESTRICT])
27 AC_REQUIRE([AC_TYPE_UID_T])
28 AC_CHECK_FUNCS_ONCE([sigaltstack siginterrupt])
29 AC_CHECK_TYPES([siginfo_t], [], [], [[
32 if test $ac_cv_type_siginfo_t = no; then
34 AC_SUBST([HAVE_SIGINFO_T])
36 gl_PREREQ_SIG_HANDLER_H