-# signal_h.m4 serial 5
-dnl Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+# signal_h.m4 serial 7
+dnl Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
[
AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
gl_CHECK_NEXT_HEADERS([signal.h])
+# AIX declares sig_atomic_t to already include volatile, and C89 compilers
+# then choke on 'volatile sig_atomic_t'. C99 requires that it compile.
+ AC_CHECK_TYPE([volatile sig_atomic_t], [],
+ [HAVE_TYPE_VOLATILE_SIG_ATOMIC_T=0], [[
+#include <signal.h>
+ ]])
])
AC_DEFUN([gl_SIGNAL_MODULE_INDICATOR],
AC_DEFUN([gl_SIGNAL_H_DEFAULTS],
[
+ GNULIB_SIGNAL_H_SIGPIPE=0; AC_SUBST([GNULIB_SIGNAL_H_SIGPIPE])
GNULIB_SIGPROCMASK=0; AC_SUBST([GNULIB_SIGPROCMASK])
GNULIB_SIGACTION=0; AC_SUBST([GNULIB_SIGACTION])
dnl Assume proper GNU behavior unless another module says otherwise.
HAVE_SIGACTION=1; AC_SUBST([HAVE_SIGACTION])
HAVE_STRUCT_SIGACTION_SA_SIGACTION=1;
AC_SUBST([HAVE_STRUCT_SIGACTION_SA_SIGACTION])
+ HAVE_TYPE_VOLATILE_SIG_ATOMIC_T=1;
+ AC_SUBST([HAVE_TYPE_VOLATILE_SIG_ATOMIC_T])
])