| # SPDX-License-Identifier: GPL-2.0-only |
| # |
| # Copyright (C) 2006-2020 OpenWrt.org |
| |
| 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 $(if $(CONFIG_AUTOREMOVE),find_md5_reproducible,find_md5),$(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,$(CONFIG_KERNEL_GIT_CLONE_URI)) |
| PROTO:=git |
| SOURCE_VERSION:=$(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)/*.ko \ |
| $(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)") \ |
| | zstd -T0 -f -o $(BIN_DIR)/kernel-debug.tar.zst |
| endef |
| endif |
| |
| ifeq ($(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 $$@ |
| |
| $(KERNEL_BUILD_DIR)/symtab.h: FORCE |
| rm -f $(KERNEL_BUILD_DIR)/symtab.h |
| touch $(KERNEL_BUILD_DIR)/symtab.h |
| +$(KERNEL_MAKE) vmlinux |
| find $(LINUX_DIR) $(STAGING_DIR_ROOT)/lib/modules -name \*.ko | \ |
| xargs $(TARGET_CROSS)nm | \ |
| awk '$$$$1 == "U" { print $$$$2 } ' | \ |
| sort -u > $(KERNEL_BUILD_DIR)/mod_symtab.txt |
| $(TARGET_CROSS)nm -n $(LINUX_DIR)/vmlinux.o | awk '/^[0-9a-f]+ [rR] __ksymtab_/ {print substr($$$$3,11)}' > $(KERNEL_BUILD_DIR)/kernel_symtab.txt |
| grep -Ff $(KERNEL_BUILD_DIR)/mod_symtab.txt $(KERNEL_BUILD_DIR)/kernel_symtab.txt > $(KERNEL_BUILD_DIR)/sym_include.txt |
| grep -Fvf $(KERNEL_BUILD_DIR)/mod_symtab.txt $(KERNEL_BUILD_DIR)/kernel_symtab.txt > $(KERNEL_BUILD_DIR)/sym_exclude.txt |
| ( \ |
| echo '#define SYMTAB_KEEP \'; \ |
| cat $(KERNEL_BUILD_DIR)/sym_include.txt | \ |
| awk '{print "KEEP(*(___ksymtab+" $$$$1 ")) \\" }'; \ |
| echo; \ |
| echo '#define SYMTAB_KEEP_GPL \'; \ |
| cat $(KERNEL_BUILD_DIR)/sym_include.txt | \ |
| awk '{print "KEEP(*(___ksymtab_gpl+" $$$$1 ")) \\" }'; \ |
| echo; \ |
| echo '#define SYMTAB_DISCARD \'; \ |
| cat $(KERNEL_BUILD_DIR)/sym_exclude.txt | \ |
| awk '{print "*(___ksymtab+" $$$$1 ") \\" }'; \ |
| echo; \ |
| echo '#define SYMTAB_DISCARD_GPL \'; \ |
| cat $(KERNEL_BUILD_DIR)/sym_exclude.txt | \ |
| awk '{print "*(___ksymtab_gpl+" $$$$1 ") \\" }'; \ |
| echo; \ |
| ) > $$@ |
| |
| $(STAMP_CONFIGURED): $(STAMP_PREPARED) $(LINUX_KCONFIG_LIST) $(TOPDIR)/.config FORCE |
| $(Kernel/Configure) |
| touch $$@ |
| |
| $(LINUX_DIR)/.modules: export STAGING_PREFIX=$$(STAGING_DIR_HOST) |
| $(LINUX_DIR)/.modules: export PKG_CONFIG_PATH=$$(STAGING_DIR_HOST)/lib/pkgconfig |
| $(LINUX_DIR)/.modules: export PKG_CONFIG_LIBDIR=$$(STAGING_DIR_HOST)/lib/pkgconfig |
| $(LINUX_DIR)/.modules: export FAIL_ON_UNCONFIGURED=1 |
| $(LINUX_DIR)/.modules: $(STAMP_CONFIGURED) $(LINUX_DIR)/.config FORCE |
| $(Kernel/CompileModules) |
| touch $$@ |
| |
| $(LINUX_DIR)/.image: export STAGING_PREFIX=$$(STAGING_DIR_HOST) |
| $(LINUX_DIR)/.image: export PKG_CONFIG_PATH=$$(STAGING_DIR_HOST)/lib/pkgconfig |
| $(LINUX_DIR)/.image: export PKG_CONFIG_LIBDIR=$$(STAGING_DIR_HOST)/lib/pkgconfig |
| $(LINUX_DIR)/.image: $(STAMP_CONFIGURED) $(if $(CONFIG_STRIP_KERNEL_EXPORTS),$(KERNEL_BUILD_DIR)/symtab.h) FORCE |
| $(Kernel/CompileImage) |
| $(Kernel/CollectDebug) |
| touch $$@ |
| |
| mostlyclean: FORCE |
| $(Kernel/Clean) |
| |
| define BuildKernel |
| endef |
| |
| download: $(if $(LINUX_SITE),$(DL_DIR)/$(LINUX_SOURCE)) |
| prepare: $(STAMP_PREPARED) |
| compile: $(LINUX_DIR)/.modules |
| +$(MAKE) -C image compile TARGET_BUILD= |
| |
| dtb: $(STAMP_CONFIGURED) |
| $(_SINGLE)$(KERNEL_MAKE) scripts_dtc |
| $(MAKE) -C image compile-dtb TARGET_BUILD= |
| |
| oldconfig menuconfig nconfig xconfig: $(STAMP_PREPARED) $(STAMP_CHECKED) FORCE |
| rm -f $(LINUX_DIR)/.config.prev |
| rm -f $(STAMP_CONFIGURED) |
| $(LINUX_RECONF_CMD) > $(LINUX_DIR)/.config |
| $(_SINGLE)$(KERNEL_MAKE) \ |
| $(if $(findstring Darwin,$(HOST_OS)), \ |
| HOSTLDLIBS_mconf="-L$(STAGING_DIR_HOST)/lib -lncurses" \ |
| filechk_conf_cfg=" :" \ |
| ) \ |
| YACC=$(STAGING_DIR_HOST)/bin/bison \ |
| $$@ |
| $(call LINUX_RECONF_DIFF,$(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 |