--- configure.in.orig	2004-01-05 04:37:52.000000000 +0000
+++ configure.in	2004-02-22 20:27:38.000000000 +0000
@@ -1873,10 +1873,10 @@
     AC_MSG_ERROR([--with-gxx-include-dir=[[dir]] requires a directory])
     ;;
   no | "")
+    . ${srcdir}/config.if
     case "${enable_version_specific_runtime_libs}" in
-      yes) gxx_include_dir='${libsubdir}/include/c++' ;;
+      yes) gxx_include_dir='${libsubdir}/include/'${libstdcxx_incdir_prefix} ;;
       *)
-        . ${srcdir}/config.if
         gxx_include_dir='${prefix}/include/'${libstdcxx_incdir} ;;
     esac ;;
   *) gxx_include_dir=${with_gxx_include_dir} ;;