Index: Portfile
===================================================================
--- Portfile	(revision 55639)
+++ Portfile	(working copy)
@@ -32,6 +32,9 @@
 
 patchfiles		patch-Makefile.in.diff
 
+# Allow Subversion 1.6.x to be built when an old version is already installed.
+macosx_deployment_target 10.1
+
 configure.args		--with-berkeley-db=:${prefix}/include/db46:${prefix}/lib/db46:db-4.6 \
 			--with-neon=${prefix} --with-apr=${prefix}/bin/apr-1-config \
 			--with-apr-util=${prefix}/bin/apu-1-config --without-apxs \