# # Copyright (C) 2006-2007 OpenWrt.org # # This is free software, licensed under the GNU General Public License v2. # See /LICENSE for more information. # include $(INCLUDE_DIR)/prereq.mk include $(INCLUDE_DIR)/depends.mk ifneq ($(DUMP),1) all: compile endif KERNEL_FILE_DEPENDS=$(GENERIC_BACKPORT_DIR) $(GENERIC_PATCH_DIR) $(GENERIC_HACK_DIR) $(PATCH_DIR) $(GENERIC_FILES_DIR) $(FILES_DIR) STAMP_PREPARED=$(LINUX_DIR)/.prepared$(if $(QUILT)$(DUMP),,_$(shell $(call find_md5,$(KERNEL_FILE_DEPENDS),))) STAMP_CONFIGURED:=$(LINUX_DIR)/.configured include $(INCLUDE_DIR)/download.mk include $(INCLUDE_DIR)/quilt.mk include $(INCLUDE_DIR)/kernel-defaults.mk define Kernel/Prepare $(call Kernel/Prepare/Default) endef define Kernel/Configure $(call Kernel/Configure/Default) endef define Kernel/CompileModules $(call Kernel/CompileModules/Default) endef define Kernel/CompileImage $(call Kernel/CompileImage/Default) $(call Kernel/CompileImage/Initramfs) endef define Kernel/Clean $(call Kernel/Clean/Default) endef define Download/kernel URL:=$(LINUX_SITE) FILE:=$(LINUX_SOURCE) HASH:=$(LINUX_KERNEL_HASH) endef KERNEL_GIT_OPTS:= ifneq ($(strip $(CONFIG_KERNEL_GIT_LOCAL_REPOSITORY)),"") KERNEL_GIT_OPTS+=--reference $(CONFIG_KERNEL_GIT_LOCAL_REPOSITORY) endif define Download/git-kernel URL:=$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)) PROTO:=git VERSION:=$(CONFIG_KERNEL_GIT_REF) FILE:=$(LINUX_SOURCE) SUBDIR:=linux-$(LINUX_VERSION) OPTS:=$(KERNEL_GIT_OPTS) endef ifdef CONFIG_COLLECT_KERNEL_DEBUG define Kernel/CollectDebug rm -rf $(KERNEL_BUILD_DIR)/debug mkdir -p $(KERNEL_BUILD_DIR)/debug/modules $(CP) $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/debug/ -$(CP) \ $(STAGING_DIR_ROOT)/lib/modules/$(LINUX_VERSION)/* \ $(KERNEL_BUILD_DIR)/debug/modules/ $(FIND) $(KERNEL_BUILD_DIR)/debug -type f | $(XARGS) $(KERNEL_CROSS)strip --only-keep-debug $(TAR) c -C $(KERNEL_BUILD_DIR) debug \ $(if $(SOURCE_DATE_EPOCH),--mtime="@$(SOURCE_DATE_EPOCH)") \ | bzip2 -c -9 > $(BIN_DIR)/kernel-debug.tar.bz2 endef endif ifeq ($(DUMP)$(filter prereq clean refresh update,$(MAKECMDGOALS)),) ifneq ($(if $(QUILT),,$(CONFIG_AUTOREBUILD)),) define Kernel/Autoclean $(PKG_BUILD_DIR)/.dep_files: $(STAMP_PREPARED) $(call rdep,$(KERNEL_FILE_DEPENDS),$(STAMP_PREPARED),$(PKG_BUILD_DIR)/.dep_files,-x "*/.dep_*") endef endif endif define BuildKernel $(if $(QUILT),$(Build/Quilt)) $(if $(LINUX_SITE),$(call Download,kernel)) $(if $(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),$(call Download,git-kernel)) .NOTPARALLEL: $(Kernel/Autoclean) $(STAMP_PREPARED): $(if $(LINUX_SITE),$(DL_DIR)/$(LINUX_SOURCE)) -rm -rf $(KERNEL_BUILD_DIR) -mkdir -p $(KERNEL_BUILD_DIR) $(Kernel/Prepare) touch $$@ $(KERNEL_BUILD_DIR)/symtab.h: FORCE rm -f $(KERNEL_BUILD_DIR)/symtab.h touch $(KERNEL_BUILD_DIR)/symtab.h +$(KERNEL_MAKE) vmlinux find $(LINUX_DIR) $(STAGING_DIR_ROOT)/lib/modules -name \*.ko | \ xargs $(TARGET_CROSS)nm | \ awk '$$$$1 == "U" { print $$$$2 } ' | \ sort -u > $(KERNEL_BUILD_DIR)/mod_symtab.txt $(TARGET_CROSS)nm -n $(LINUX_DIR)/vmlinux.o | grep ' [rR] __ksymtab' | sed -e 's,........ [rR] __ksymtab_,,' > $(KERNEL_BUILD_DIR)/kernel_symtab.txt grep -Ff $(KERNEL_BUILD_DIR)/mod_symtab.txt $(KERNEL_BUILD_DIR)/kernel_symtab.txt > $(KERNEL_BUILD_DIR)/sym_include.txt grep -Fvf $(KERNEL_BUILD_DIR)/mod_symtab.txt $(KERNEL_BUILD_DIR)/kernel_symtab.txt > $(KERNEL_BUILD_DIR)/sym_exclude.txt ( \ echo '#define SYMTAB_KEEP \'; \ cat $(KERNEL_BUILD_DIR)/sym_include.txt | \ awk '{print "KEEP(*(___ksymtab+" $$$$1 ")) \\" }'; \ echo; \ echo '#define SYMTAB_KEEP_GPL \'; \ cat $(KERNEL_BUILD_DIR)/sym_include.txt | \ awk '{print "KEEP(*(___ksymtab_gpl+" $$$$1 ")) \\" }'; \ echo; \ echo '#define SYMTAB_DISCARD \'; \ cat $(KERNEL_BUILD_DIR)/sym_exclude.txt | \ awk '{print "*(___ksymtab+" $$$$1 ") \\" }'; \ echo; \ echo '#define SYMTAB_DISCARD_GPL \'; \ cat $(KERNEL_BUILD_DIR)/sym_exclude.txt | \ awk '{print "*(___ksymtab_gpl+" $$$$1 ") \\" }'; \ echo; \ ) > $$@ $(STAMP_CONFIGURED): $(STAMP_PREPARED) $(LINUX_KCONFIG_LIST) $(TOPDIR)/.config FORCE $(Kernel/Configure) touch $$@ $(LINUX_DIR)/.modules: $(STAMP_CONFIGURED) $(LINUX_DIR)/.config FORCE $(Kernel/CompileModules) touch $$@ $(LINUX_DIR)/.image: $(STAMP_CONFIGURED) $(if $(CONFIG_STRIP_KERNEL_EXPORTS),$(KERNEL_BUILD_DIR)/symtab.h) FORCE $(Kernel/CompileImage) $(Kernel/CollectDebug) touch $$@ mostlyclean: FORCE $(Kernel/Clean) define BuildKernel endef download: $(if $(LINUX_SITE),$(DL_DIR)/$(LINUX_SOURCE)) prepare: $(STAMP_PREPARED) compile: $(LINUX_DIR)/.modules $(MAKE) -C image compile TARGET_BUILD= oldconfig menuconfig nconfig: $(STAMP_PREPARED) $(STAMP_CHECKED) FORCE rm -f $(LINUX_DIR)/.config.prev rm -f $(STAMP_CONFIGURED) $(LINUX_RECONF_CMD) > $(LINUX_DIR)/.config $(_SINGLE)$(KERNEL_MAKE) \ $(if $(findstring Darwin,$(HOST_OS)),HOST_LOADLIBES="-L$(STAGING_DIR_HOST)/lib -lncurses") \ $$@ $(LINUX_RECONF_DIFF) $(LINUX_DIR)/.config > $(LINUX_RECONFIG_TARGET) install: $(LINUX_DIR)/.image +$(MAKE) -C image compile install TARGET_BUILD= clean: FORCE rm -rf $(KERNEL_BUILD_DIR) image-prereq: @+$(NO_TRACE_MAKE) -s -C image prereq TARGET_BUILD= prereq: image-prereq endef