2 dnl Copyright (C) 2007, 2008, 2009 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 AC_DEFUN([gl_SIGNAL_H],
9 AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
10 gl_CHECK_NEXT_HEADERS([signal.h])
11 # AIX declares sig_atomic_t to already include volatile, and C89 compilers
12 # then choke on 'volatile sig_atomic_t'. C99 requires that it compile.
13 AC_CHECK_TYPE([volatile sig_atomic_t], [],
14 [HAVE_TYPE_VOLATILE_SIG_ATOMIC_T=0], [[
19 AC_DEFUN([gl_SIGNAL_MODULE_INDICATOR],
21 dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
22 AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
23 GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
26 AC_DEFUN([gl_SIGNAL_H_DEFAULTS],
28 GNULIB_SIGNAL_H_SIGPIPE=0; AC_SUBST([GNULIB_SIGNAL_H_SIGPIPE])
29 GNULIB_SIGPROCMASK=0; AC_SUBST([GNULIB_SIGPROCMASK])
30 GNULIB_SIGACTION=0; AC_SUBST([GNULIB_SIGACTION])
31 dnl Assume proper GNU behavior unless another module says otherwise.
32 HAVE_POSIX_SIGNALBLOCKING=1; AC_SUBST([HAVE_POSIX_SIGNALBLOCKING])
33 HAVE_SIGSET_T=1; AC_SUBST([HAVE_SIGSET_T])
34 HAVE_SIGINFO_T=1; AC_SUBST([HAVE_SIGINFO_T])
35 HAVE_SIGACTION=1; AC_SUBST([HAVE_SIGACTION])
36 HAVE_STRUCT_SIGACTION_SA_SIGACTION=1;
37 AC_SUBST([HAVE_STRUCT_SIGACTION_SA_SIGACTION])
38 HAVE_TYPE_VOLATILE_SIG_ATOMIC_T=1;
39 AC_SUBST([HAVE_TYPE_VOLATILE_SIG_ATOMIC_T])