X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fpipe.m4;h=5831283324611281cc2dbb69d77cb4cca3200b87;hb=fa1db0dd22768f09a507674a30beb5b8a87bb35f;hp=fe7876ff0e69773a4b8e7539c833a9aecfc0d242;hpb=d629f6d28665184cf8970b691e48ea2dfccfa25f;p=gnulib.git

diff --git a/m4/pipe.m4 b/m4/pipe.m4
index fe7876ff0..583128332 100644
--- a/m4/pipe.m4
+++ b/m4/pipe.m4
@@ -1,12 +1,15 @@
-# pipe.m4 serial 4
-dnl Copyright (C) 2004, 2008, 2009 Free Software Foundation, Inc.
+# pipe.m4 serial 2
+dnl Copyright (C) 2010-2013 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_DEFUN([gl_PIPE],
+AC_DEFUN([gl_FUNC_PIPE],
 [
-  dnl Prerequisites of lib/pipe.c.
-  AC_REQUIRE([AC_C_INLINE])
-  AC_REQUIRE([AC_TYPE_MODE_T])
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+
+  AC_CHECK_FUNCS_ONCE([pipe])
+  if test $ac_cv_func_pipe != yes; then
+    HAVE_PIPE=0
+  fi
 ])