gettimeofday: port recent C++ fix to Emacs

[gnulib.git] / m4 / unlocked-io.m4

diff --git a/m4/unlocked-io.m4 b/m4/unlocked-io.m4
index 6cbacb0..f146206 100644 (file)
--- a/m4/unlocked-io.m4
+++ b/m4/unlocked-io.m4
@@ -1,7 +1,6 @@
-# unlocked-io.m4 serial 12
+# unlocked-io.m4 serial 15
 
-# Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software
-# Foundation, Inc.
+# Copyright (C) 1998-2006, 2009-2013 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -17,9 +16,7 @@ dnl on Solaris 2.6).
 
 AC_DEFUN([gl_FUNC_GLIBC_UNLOCKED_IO],
 [
-  AC_LIBSOURCES([unlocked-io.h])
-
-  AC_DEFINE([USE_UNLOCKED_IO], 1,
+  AC_DEFINE([USE_UNLOCKED_IO], [1],
     [Define to 1 if you want getc etc. to use unlocked I/O if available.
      Unlocked I/O can improve performance in unithreaded apps,
      but it is not safe for multithreaded apps.])
@@ -28,9 +25,17 @@ AC_DEFUN([gl_FUNC_GLIBC_UNLOCKED_IO],
   dnl fgets_unlocked(), fputs_unlocked() etc.
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
 
-  AC_CHECK_DECLS_ONCE(
-     [clearerr_unlocked feof_unlocked ferror_unlocked
-      fflush_unlocked fgets_unlocked fputc_unlocked fputs_unlocked
-      fread_unlocked fwrite_unlocked getc_unlocked
-      getchar_unlocked putc_unlocked putchar_unlocked])
+  AC_CHECK_DECLS_ONCE([clearerr_unlocked])
+  AC_CHECK_DECLS_ONCE([feof_unlocked])
+  AC_CHECK_DECLS_ONCE([ferror_unlocked])
+  AC_CHECK_DECLS_ONCE([fflush_unlocked])
+  AC_CHECK_DECLS_ONCE([fgets_unlocked])
+  AC_CHECK_DECLS_ONCE([fputc_unlocked])
+  AC_CHECK_DECLS_ONCE([fputs_unlocked])
+  AC_CHECK_DECLS_ONCE([fread_unlocked])
+  AC_CHECK_DECLS_ONCE([fwrite_unlocked])
+  AC_CHECK_DECLS_ONCE([getc_unlocked])
+  AC_CHECK_DECLS_ONCE([getchar_unlocked])
+  AC_CHECK_DECLS_ONCE([putc_unlocked])
+  AC_CHECK_DECLS_ONCE([putchar_unlocked])
 ])