X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fpipe.m4;h=ae00049977cea4e5ecdd3f4c27b8523daa898f1e;hb=2d86779b66c22650afcf6041018d40257445979a;hp=0e5af624ddacb4296b8b8b4d7a58da55ac7ee2cc;hpb=08f44b5176b17c2f4d70e614b8b71a697165f0be;p=gnulib.git

diff --git a/m4/pipe.m4 b/m4/pipe.m4
index 0e5af624d..ae0004997 100644
--- a/m4/pipe.m4
+++ b/m4/pipe.m4
@@ -1,18 +1,16 @@
 # pipe.m4 serial 1
-dnl Copyright (C) 2004 Free Software Foundation, Inc.
-dnl This file is free software, distributed under the terms of the GNU
-dnl General Public License.  As a special exception to the GNU General
-dnl Public License, this file may be distributed as part of a program
-dnl that contains a configuration script generated by Autoconf, under
-dnl the same distribution terms as the rest of that program.
+dnl Copyright (C) 2010-2011 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.h.
-  AC_CHECK_HEADERS_ONCE(unistd.h)
-  dnl Prerequisites of lib/pipe.c.
-  AC_REQUIRE([AC_C_INLINE])
-  AC_REQUIRE([AC_TYPE_MODE_T])
-  AC_REQUIRE([AC_FUNC_FORK])
-  AC_CHECK_FUNCS(posix_spawn)
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+
+  AC_CHECK_FUNCS_ONCE([pipe])
+  if test $ac_cv_func_pipe != yes; then
+    HAVE_PIPE=0
+    AC_LIBOBJ([pipe])
+  fi
 ])