Merge from coreutils.

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

diff --git a/m4/unlocked-io.m4 b/m4/unlocked-io.m4
index f0c15d9..f8e98f1 100644 (file)
--- a/m4/unlocked-io.m4
+++ b/m4/unlocked-io.m4
@@ -1,4 +1,4 @@
-#serial 7 -*- autoconf -*-
+#serial 8 -*- autoconf -*-
 
 dnl From Jim Meyering.
 dnl
@@ -10,9 +10,9 @@ dnl on Solaris 2.6).
 
 AC_DEFUN([jm_FUNC_GLIBC_UNLOCKED_IO],
 [
-  dnl Persuade glibc <stdio.h> to declare fgets_unlocked(), fputs_unlocked()
-  dnl etc.
-  AC_REQUIRE([AC_GNU_SOURCE])
+  dnl Persuade glibc and Solaris <stdio.h> to declare
+  dnl fgets_unlocked(), fputs_unlocked() etc.
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
 
   AC_CHECK_DECLS_ONCE(
      [clearerr_unlocked feof_unlocked ferror_unlocked