Makefile: Rebuild buildroot when its .config changes

diff --git a/build/Makefile b/build/Makefile
index d4f92bb0c255c966d0ad30238a78161930d78798..8347c17e6cc28db48c789b0f79a27d993b441c86 100644 (file)
--- a/build/Makefile
+++ b/build/Makefile
@@ -6,6 +6,7 @@ NPROC:=$(shell nproc)
 image.fit: buildroot/images/rootfs.cpio.uboot linux-4.4/vmlinux
        mkimage -f auto -d linux-4.4/arch/arm64/boot/Image -i buildroot/images/rootfs.cpio.uboot -b linux-4.4/arch/arm64/boot/dts/tegra186-quill-p3310-1000-c03-00-base.dtb image.fit
 
+buildroot/images/rootfs.cpio.uboot: ./buildroot/.config
 buildroot/images/rootfs.cpio.uboot: rootfs-overlay/lib/firmware/jailhouse.bin rootfs-overlay/lib/modules/4.4.38+/modules.dep
 buildroot/images/rootfs.cpio.uboot: $(shell find rootfs-overlay)
        $(MAKE) -j1 -C buildroot ROOTFS_CPIO_COMPRESS_CMD="gzip --fast -c"