# HG changeset patch
# User Bruno Haible <bruno@clisp.org>
# Date 1161088992 0
# Node ID c076b72ddb2f4698d106e238e5203dc9ed643cc6
# Parent  6c0cb059c9ea61d150397f1b3a70c309d80e3b35
Use the system's sigset_t if present.

diff --git a/ChangeLog b/ChangeLog
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2006-10-16  Bruno Haible  <bruno@clisp.org>
+
+	* m4/signalblocking.m4 (gl_PREREQ_SIGPROCMASK): Also test for sigset_t.
+	* lib/sigprocmask.h: Include <sys/types.h>.
+	(sigset_t): Use the system's definition if present.
+
 2006-10-17  Eric Blake  <ebb9@byu.net>
 
 	* lib/xvasprintf.c (includes): Assume config.h.
diff --git a/lib/sigprocmask.h b/lib/sigprocmask.h
--- a/lib/sigprocmask.h
+++ b/lib/sigprocmask.h
@@ -20,6 +20,9 @@
 
 #if ! HAVE_POSIX_SIGNALBLOCKING
 
+/* Mingw defines sigset_t not in <signal.h>, but in <sys/types.h>.  */
+# include <sys/types.h>
+
 # include "verify.h"
 
 /* Maximum signal number + 1.  */
@@ -31,7 +34,9 @@
 verify (NSIG <= 32);
 
 /* A set or mask of signals.  */
+# if !HAVE_SIGSET_T
 typedef unsigned int sigset_t;
+# endif
 
 /* Test whether a given signal is contained in a signal set.  */
 extern int sigismember (const sigset_t *set, int sig);
diff --git a/m4/signalblocking.m4 b/m4/signalblocking.m4
--- a/m4/signalblocking.m4
+++ b/m4/signalblocking.m4
@@ -1,4 +1,4 @@
-# signalblocking.m4 serial 2 (gettext-0.15.1)
+# signalblocking.m4 serial 3 (gettext-0.15.1)
 dnl Copyright (C) 2001-2002, 2006 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -25,7 +25,16 @@
   fi
 ])
 
-# Prerequisites of lib/sigprocmask.c.
+# Prerequisites of lib/sigprocmask.h and lib/sigprocmask.c.
 AC_DEFUN([gl_PREREQ_SIGPROCMASK], [
+  AC_CHECK_TYPES([sigset_t],
+    [gl_cv_type_sigset_t=yes], [gl_cv_type_sigset_t=no],
+    [#include <signal.h>
+/* Mingw defines sigset_t not in <signal.h>, but in <sys/types.h>.  */
+#include <sys/types.h>])
+  if test $gl_cv_type_sigset_t = yes; then
+    AC_DEFUN([HAVE_SIGSET_T],
+      [Define to 1 if you lack the sigprocmask function but have the sigset_t type.])
+  fi
   AC_CHECK_FUNCS_ONCE(raise)
 ])