source: trunk/openwrt/patches/lede/all/025_make_empty_rootfs @ 926

diff --git a/include/image.mk b/include/image.mk
index 81519cd..a5f89ca 100644
--- a/include/image.mk
+++ b/include/image.mk
@@ -200,13 +200,32 @@ endef
 $(eval $(foreach S,$(JFFS2_BLOCKSIZE),$(call Image/mkfs/jffs2/template,$(S))))
 $(eval $(foreach S,$(NAND_BLOCKSIZE),$(call Image/mkfs/jffs2-nand/template,$(S))))
 
-define Image/mkfs/squashfs
+ifneq ($(CONFIG_BOOT_METHOD_SCRIPT),)
+    define Image/mkfs/squashfs
+       # kexec and LABEL= boot
+       @mkdir -p $(call mkfs_target_dir,$(1))/overlay
+       ls -l $(1)
+       # remove /lib/modules to prevent the image from getting to big
+       rm -rf $(call mkfs_target_dir,$(1))/lib/modules
        $(STAGING_DIR_HOST)/bin/mksquashfs4 $(call mkfs_target_dir,$(1)) $@ \
                -nopad -noappend -root-owned \
                -comp $(SQUASHFSCOMP) $(SQUASHFSOPT) \
                -processors 1 \
                $(if $(SOURCE_DATE_EPOCH),-fixed-time $(SOURCE_DATE_EPOCH))
-endef
+    endef
+else
+    define Image/mkfs/squashfs
+       # boot direclty from device
+       mkdir -p $(TMP_DIR)/debwrt-empty-rootfs/overlay
+       touch $(TMP_DIR)/debwrt-empty-rootfs/debwrt-empty-rootfs
+       # create image file $@[used to be $(KDIR)/root.squashfs] from $(TMP_DIR)/debwrt-empty-rootfs/
+       $(STAGING_DIR_HOST)/bin/mksquashfs4 $(TMP_DIR)/debwrt-empty-rootfs/ $@ \
+               -nopad -noappend -root-owned \
+               -comp $(SQUASHFSCOMP) $(SQUASHFSOPT) \
+               -processors $(if $(CONFIG_PKG_BUILD_JOBS),$(CONFIG_PKG_BUILD_JOBS),1) \
+               $(if $(SOURCE_DATE_EPOCH),-fixed-time $(SOURCE_DATE_EPOCH))
+    endef
+endif
 
 # $(1): board name
 # $(2): rootfs type
@@ -552,6 +571,17 @@ define BuildImage
   endif
 
   kernel_prepare: image_prepare
+ifneq ($(CONFIG_IMAGE_CMDLINE_HACK),y)
+       if [ ! -e $(STAGING_DIR_HOST)/bin/patch-cmdline.bin ]; then \
+           mv $(STAGING_DIR_HOST)/bin/patch-cmdline $(STAGING_DIR_HOST)/bin/patch-cmdline.bin; \
+           echo "#!/bin/sh" > $(STAGING_DIR_HOST)/bin/patch-cmdline; \
+           chmod +x $(STAGING_DIR_HOST)/bin/patch-cmdline; \
+       fi
+else
+       if [ -e $(STAGING_DIR_HOST)/bin/patch-cmdline.bin ]; then \
+           mv $(STAGING_DIR_HOST)/bin/patch-cmdline.bin $(STAGING_DIR_HOST)/bin/patch-cmdline; \
+       fi
+endif
        $(call Image/Build/targz)
        $(call Image/Build/cpiogz)
        $(call Image/BuildKernel)