diff --git a/Makefile.unix b/Makefile.unix
index cca3c1cd6c..4df0773eb9 100644
--- a/Makefile.unix
+++ b/Makefile.unix
@@ -515,6 +515,14 @@ do_gconfig: dirlinks apps_preconfig
 
 gconfig: do_gconfig clean_context
 
+do_savedefconfig: dirlinks apps_preconfig
+
+savedefconfig: do_savedefconfig
+	$(Q) APPSDIR=${CONFIG_APPS_DIR} kconfig-conf --savedefconfig defconfig Kconfig
+	$(Q) sed -i -e "/CONFIG_APPS_DIR=/d" defconfig
+	$(Q) grep "CONFIG_ARCH=" .config >> defconfig
+	$(Q) grep "CONFIG_ARCH_BOARD=" .config >> defconfig
+
 # export
 #
 # The export target will package the NuttX libraries and header files into