maint.mk: import changes to syntax-check macros from coreutils

[gnulib.git] / m4 / unistd-safer.m4

diff --git a/m4/unistd-safer.m4 b/m4/unistd-safer.m4
index f672c87..09adf93 100644 (file)
--- a/m4/unistd-safer.m4
+++ b/m4/unistd-safer.m4
@@ -1,25 +1,13 @@
-# unistd-safer.m4 serial 3
-dnl Copyright (C) 2002, 2005 Free Software Foundation, Inc.
+#serial 8
+dnl Copyright (C) 2002, 2005, 2006 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_UNISTD_SAFER],
 [
-  AC_LIBSOURCES([dup-safer.c, fd-safer.c, unistd-safer.h])
+  AC_CHECK_FUNCS_ONCE([pipe])
   AC_LIBOBJ([dup-safer])
   AC_LIBOBJ([fd-safer])
-
-  gl_PREREQ_DUP_SAFER
-  gl_PREREQ_FD_SAFER
-])
-
-# Prerequisites of lib/dup-safer.c.
-AC_DEFUN([gl_PREREQ_DUP_SAFER], [
-  AC_CHECK_HEADERS_ONCE(fcntl.h unistd.h)
-])
-
-# Prerequisites of lib/fd-safer.c.
-AC_DEFUN([gl_PREREQ_FD_SAFER], [
-  AC_CHECK_HEADERS_ONCE(unistd.h)
+  AC_LIBOBJ([pipe-safer])
 ])