diff -Nuar neon-0.29.6/configure neon-0.29.6-darwin-fix-configure/configure
--- neon-0.29.6/configure	2011-05-03 14:25:31.000000000 +0200
+++ neon-0.29.6-darwin-fix-configure/configure	2012-06-06 23:32:21.000000000 +0200
@@ -4184,7 +4184,7 @@
 case x"$ne_cv_os_uname" in #(
   x"Darwin") :
 
-  CPPFLAGS="$CPPFLAGS -no-cpp-precomp"
+  CPPFLAGS="$CPPFLAGS"
   LDFLAGS="$LDFLAGS -flat_namespace"
   # poll has various issues in various Darwin releases
   if test x${ac_cv_func_poll+set} != xset; then