# DP: Add FORCE_CROSS_LAYOUT env var to force a cross directory layout.

--- a/src/configure.ac
+++ b/src/configure.ac
@@ -3490,7 +3490,7 @@ target_configargs="$target_configargs ${
 # native.  However, it would be better to use other mechanisms to make the
 # sorts of decisions they want to make on this basis.  Please consider
 # this option to be deprecated.  FIXME.
-if test x${is_cross_compiler} = xyes ; then
+if test x${is_cross_compiler} = xyes || test x${FORCE_CROSS_LAYOUT} = xyes; then
   target_configargs="--with-cross-host=${host_noncanonical} ${target_configargs}"
 fi
 
--- a/src/gcc/configure.ac
+++ b/src/gcc/configure.ac
@@ -2501,14 +2501,14 @@ SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADE
 BUILD_SYSTEM_HEADER_DIR=$SYSTEM_HEADER_DIR	AC_SUBST(BUILD_SYSTEM_HEADER_DIR)
 
 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x ||
-   test x$build != x$host || test "x$with_build_sysroot" != x; then
+   test x$build != x$host || test "x$with_build_sysroot" != x || test x$FORCE_CROSS_LAYOUT = xyes; then
   if test "x$with_build_sysroot" != x; then
     BUILD_SYSTEM_HEADER_DIR=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
   else
     BUILD_SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
   fi
 
-  if test x$host != x$target
+  if test x$host != x$target || test x$FORCE_CROSS_LAYOUT = xyes
   then
     CROSS="-DCROSS_DIRECTORY_STRUCTURE"
     ALL=all.cross
@@ -7602,14 +7602,14 @@ AC_SUBST_FILE(language_hooks)
 
 # Echo link setup.
 if test x${build} = x${host} ; then
-  if test x${host} = x${target} ; then
+  if test x${host} = x${target} && test x$FORCE_CROSS_LAYOUT != xyes ; then
     echo "Links are now set up to build a native compiler for ${target}." 1>&2
   else
     echo "Links are now set up to build a cross-compiler" 1>&2
     echo " from ${host} to ${target}." 1>&2
   fi
 else
-  if test x${host} = x${target} ; then
+  if test x${host} = x${target} && test x$FORCE_CROSS_LAYOUT != xyes ; then
     echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
     echo " for ${target}." 1>&2
   else
