--- a/common/autoconf/source-dirs.m4	Thu Nov 08 12:24:35 2012 +0100
+++ b/common/autoconf/source-dirs.m4	Mon Nov 12 12:34:11 2012 -0800
@@ -253,5 +253,24 @@
 BUILD_OUTPUT="$OUTPUT_ROOT"
 AC_SUBST(BUILD_OUTPUT)
 
+HOTSPOT_DIST="$OUTPUT_ROOT/hotspot/dist"
+BUILD_HOTSPOT=true
+AC_SUBST(HOTSPOT_DIST)
+AC_SUBST(BUILD_HOTSPOT)
+AC_ARG_WITH(import-hotspot, [AS_HELP_STRING([--with-import-hotspot],
+	[import hotspot binaries from this jdk image or hotspot build dist dir instead of building from source])])
+if test "x$with_import_hotspot" != x; then
+    CURDIR="$PWD"
+    cd "$with_import_hotspot"
+    HOTSPOT_DIST="`pwd`"
+    cd "$CURDIR"
+    if ! (test -d $HOTSPOT_DIST/lib && test -d $HOTSPOT_DIST/jre/lib); then
+        AC_MSG_ERROR([You have to import hotspot from a full jdk image or hotspot build dist dir!])
+    fi
+    AC_MSG_CHECKING([if hotspot should be imported])
+    AC_MSG_RESULT([yes from $HOTSPOT_DIST])
+    BUILD_HOTSPOT=false
+fi
+
 JDK_OUTPUTDIR="$OUTPUT_ROOT/jdk"
 ])