target/sdk: add support for building kernel module packages

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 39858

diff --git a/target/sdk/Makefile b/target/sdk/Makefile
index d6c42b0525f26a8962eabcfc00489a3b3fb42a3d..82b47cd946d4a546ea1c1e493aaccda6e3e8d537 100644 (file)
--- a/target/sdk/Makefile
+++ b/target/sdk/Makefile
@@ -20,10 +20,36 @@ EXCLUDE_DIRS:=*/ccache \
        */stamp \
        */stampfiles \
        */man \
-       */info
+       */info \
+
+SDK_DIRS = \
+               staging_dir/host \
+               staging_dir/target-$(ARCH)$(ARCH_SUFFIX)_$(LIBC)-$(LIBCV)$(if $(CONFIG_arm),_eabi) \
+               staging_dir/toolchain-$(ARCH)$(ARCH_SUFFIX)_gcc-$(GCCV)_$(LIBC)-$(LIBCV)$(if $(CONFIG_arm),_eabi) \
 
 SVN_PACKAGE_URL=$(shell svn info ../../package | awk '/^URL:/ { print $$2; }')
 
+KDIR_BASE = $(patsubst $(TOPDIR)/%,%,$(LINUX_DIR))
+
+KERNEL_FILES_ARCH = \
+       Makefile* \
+       module.lds \
+       Kbuild.platforms \
+       */Platform \
+       include \
+       scripts \
+       kernel/asm-offsets.s
+
+KERNEL_FILES_BASE := \
+       .config \
+       Makefile \
+       scripts \
+       include \
+       Module.symvers \
+       $(addprefix arch/$(LINUX_KARCH)/,$(KERNEL_FILES_ARCH))
+
+KERNEL_FILES := $(patsubst $(TOPDIR)/%,%,$(wildcard $(addprefix $(LINUX_DIR)/,$(KERNEL_FILES_BASE))))
+
 all: compile
 
 $(BIN_DIR)/$(SDK_NAME).tar.bz2: clean
@@ -32,8 +58,7 @@ $(BIN_DIR)/$(SDK_NAME).tar.bz2: clean
        $(TAR) -cf - -C $(TOPDIR) \
                $(foreach exclude,$(EXCLUDE_DIRS),--exclude="$(exclude)") \
                --exclude="staging_dir/$(ARCH)" \
-               staging_dir/host staging_dir/target-$(ARCH)$(ARCH_SUFFIX)_$(LIBC)-$(LIBCV)$(if $(CONFIG_arm),_eabi) \
-               staging_dir/toolchain-$(ARCH)$(ARCH_SUFFIX)_gcc-$(GCCV)_$(LIBC)-$(LIBCV)$(if $(CONFIG_arm),_eabi) | \
+               $(SDK_DIRS) $(KERNEL_FILES) | \
                $(TAR) -xf - -C $(SDK_BUILD_DIR)
        mkdir -p $(SDK_BUILD_DIR)/target/linux
        $(CP) $(GENERIC_PLATFORM_DIR) $(PLATFORM_DIR) $(SDK_BUILD_DIR)/target/linux/