X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fextensions.m4;h=e71845f1d7c1def1bb47a875f3316e058e09f0be;hb=db0f2ae452a6827f01474b79b55080e700afb974;hp=7faaa833bd22f83be1d364372a86a49cb18e8d75;hpb=6544b9e91b88b9e4d0ee5a061515e4e6a756e2cf;p=gnulib.git

diff --git a/m4/extensions.m4 b/m4/extensions.m4
index 7faaa833b..e71845f1d 100644
--- a/m4/extensions.m4
+++ b/m4/extensions.m4
@@ -1,15 +1,30 @@
+# Enable extensions on systems that normally disable them.
+
+# Copyright (C) 2003 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
 # gl_USE_SYSTEM_EXTENSIONS
 # ------------------------
 # Enable extensions on systems that normally disable them,
 # typically due to standards-conformance issues.
 AC_DEFUN([gl_USE_SYSTEM_EXTENSIONS], [
+  AC_BEFORE([$0], [AC_COMPILE_IFELSE])
+  AC_BEFORE([$0], [AC_RUN_IFELSE])
+
   AC_REQUIRE([AC_GNU_SOURCE])
+  AC_REQUIRE([AC_AIX])
+  AC_REQUIRE([AC_MINIX])
+
   AH_VERBATIM([__EXTENSIONS__],
 [/* Enable extensions on Solaris.  */
 #ifndef __EXTENSIONS__
 # undef __EXTENSIONS__
+#endif
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
 #endif])
-  AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl
-  AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
   AC_DEFINE([__EXTENSIONS__])
+  AC_DEFINE([_POSIX_PTHREAD_SEMANTICS])
 ])