KERNEL_FILES := $(patsubst $(TOPDIR)/%,%,$(wildcard $(addprefix $(LINUX_DIR)/,$(KERNEL_FILES_BASE))))
+# The kernel source hosts various userspace utilities sources.
+# These are packaged separately from the kernel and kernel modules.
+# The source has to be included here to be buildable by the SDK.
+#
+USERSPACE_UTILS_FILES := \
+ tools/build \
+ tools/scripts \
+ tools/usb/usbip \
+ tools/spi
+
+USERSPACE_FILES := $(patsubst $(TOPDIR)/%,%,$(wildcard $(addprefix $(LINUX_DIR)/,$(USERSPACE_UTILS_FILES))))
+
all: compile
$(BIN_DIR)/$(SDK_NAME).tar.xz: clean
$(SDK_DIRS) $(KERNEL_FILES) | \
$(TAR) -xf - -C $(SDK_BUILD_DIR)
- # Copy usbip sources, this is required for the usbip userspace packages to be buildable by the SDK.
- $(TAR) -cf - -C $(TOPDIR) $(KDIR_BASE)/tools/usb/usbip/ | \
+ $(TAR) -cf - -C $(TOPDIR) $(USERSPACE_FILES) | \
$(TAR) -xf - -C $(SDK_BUILD_DIR)
(cd $(SDK_BUILD_DIR); find $(STAGING_SUBDIR_HOST)/bin $(STAGING_SUBDIR_HOST)/usr/bin \