This patch is needed for building the package as of F-11.  It can be

dropped whenever autoconf 2.63 is no longer used on any live branch.

diff -Naur tiff-3.9.4.orig/configure.ac tiff-3.9.4/configure.ac

--- tiff-3.9.4.orig/configure.ac	2010-06-15 14:58:12.000000000 -0400

+++ tiff-3.9.4/configure.ac	2010-06-15 17:13:11.000000000 -0400

@@ -24,7 +24,7 @@

 dnl Process this file with autoconf to produce a configure script.

-AC_PREREQ(2.64)

+AC_PREREQ(2.63)

 AC_INIT([LibTIFF Software],[3.9.4],[tiff@lists.maptools.org],[tiff])

 AC_CONFIG_AUX_DIR(config)

 AC_CONFIG_MACRO_DIR(m4)