diff --git a/scripts/diffconfig.sh b/scripts/diffconfig.sh
new file mode 100755
index 0000000..7ffe9dd
--- /dev/null
+++ b/scripts/diffconfig.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+make ./scripts/config/conf >/dev/null || { make ./scripts/config/conf; exit 1; }
+grep \^CONFIG_TARGET_ .config | head -n3 > tmp/.diffconfig.head
+grep \^CONFIG_TARGET_DEVICE_ .config >> tmp/.diffconfig.head
+grep '^CONFIG_ALL=y' .config >> tmp/.diffconfig.head
+grep '^CONFIG_ALL_KMODS=y' .config >> tmp/.diffconfig.head
+grep '^CONFIG_ALL_NONSHARED=y' .config >> tmp/.diffconfig.head
+grep '^CONFIG_DEVEL=y' .config >> tmp/.diffconfig.head
+grep '^CONFIG_TOOLCHAINOPTS=y' .config >> tmp/.diffconfig.head
+grep '^CONFIG_BUSYBOX_CUSTOM=y' .config >> tmp/.diffconfig.head
+grep '^CONFIG_TARGET_PER_DEVICE_ROOTFS=y' .config >> tmp/.diffconfig.head
+./scripts/config/conf --defconfig=tmp/.diffconfig.head -w tmp/.diffconfig.stage1 Config.in >/dev/null
+./scripts/kconfig.pl '>+' tmp/.diffconfig.stage1 .config >> tmp/.diffconfig.head
+./scripts/config/conf --defconfig=tmp/.diffconfig.head -w tmp/.diffconfig.stage2 Config.in >/dev/null
+./scripts/kconfig.pl '>' tmp/.diffconfig.stage2 .config >> tmp/.diffconfig.head
+cat tmp/.diffconfig.head
+rm -f tmp/.diffconfig tmp/.diffconfig.head