Index: subversion-1.4.6/build/ac-macros/apr.m4
===================================================================
--- subversion-1.4.6.orig/build/ac-macros/apr.m4
+++ subversion-1.4.6/build/ac-macros/apr.m4
@@ -64,7 +64,7 @@ AC_DEFUN(SVN_LIB_APR,
     AC_MSG_ERROR([apr-config --ldflags failed])
   fi
 
-  SVN_APR_INCLUDES="`$apr_config --includes`"
+  SVN_APR_INCLUDES="`$apr_config --includes --cppflags`"
   if test $? -ne 0; then
     AC_MSG_ERROR([apr-config --includes failed])
   fi