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v21.02.2
include/kernel.mk
301 строка
9 KB
Felix Fietkau
build: use -nostdinc and -isystem in NOSTDINC_FLAGS for out-of-tree kernel modules
04 апр 2021, 12:39
04 апр 2021, 12:39
95b838f
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# SPDX-License-Identifier: GPL-2.0-only # # Copyright (C) 2006-2020 OpenWrt.org ifneq ($(filter check,$(MAKECMDGOALS)),) CHECK:=1 DUMP:=1 endif ifneq ($(SOURCE_DATE_EPOCH),) ifndef DUMP KBUILD_BUILD_TIMESTAMP:=$(shell perl -e 'print scalar gmtime($(SOURCE_DATE_EPOCH))') endif endif ifeq ($(__target_inc),) ifndef CHECK include $(INCLUDE_DIR)/target.mk endif endif ifeq ($(DUMP),1) KERNEL?=<KERNEL> BOARD?=<BOARD> LINUX_VERSION?=<LINUX_VERSION> LINUX_VERMAGIC?=<LINUX_VERMAGIC> else ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),) export GCC_HONOUR_COPTS=s endif LINUX_KMOD_SUFFIX=ko ifneq (,$(findstring uml,$(BOARD))) KERNEL_CC?=$(HOSTCC) KERNEL_CROSS?= else KERNEL_CC?=$(TARGET_CC) KERNEL_CROSS?=$(TARGET_CROSS) endif ifeq ($(TARGET_BUILD),1) PATCH_DIR ?= $(CURDIR)/patches$(if $(wildcard ./patches-$(KERNEL_PATCHVER)),-$(KERNEL_PATCHVER)) FILES_DIR ?= $(foreach dir,$(wildcard $(CURDIR)/files $(CURDIR)/files-$(KERNEL_PATCHVER)),"$(dir)") endif KERNEL_BUILD_DIR ?= $(BUILD_DIR)/linux-$(BOARD)$(if $(SUBTARGET),_$(SUBTARGET)) LINUX_DIR ?= $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) LINUX_UAPI_DIR=uapi/ LINUX_VERMAGIC:=$(strip $(shell cat $(LINUX_DIR)/.vermagic 2>/dev/null)) LINUX_VERMAGIC:=$(if $(LINUX_VERMAGIC),$(LINUX_VERMAGIC),unknown) LINUX_UNAME_VERSION:=$(KERNEL_BASE) ifneq ($(findstring -rc,$(LINUX_VERSION)),) LINUX_UNAME_VERSION:=$(LINUX_UNAME_VERSION)-$(strip $(lastword $(subst -, ,$(LINUX_VERSION)))) endif LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux ifneq (,$(findstring -rc,$(LINUX_VERSION))) LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.gz else LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.xz endif ifneq (,$(findstring -rc,$(LINUX_VERSION))) LINUX_SITE:=https://git.kernel.org/torvalds/t else ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),) LINUX_SITE:=@KERNEL/linux/kernel/v$(word 1,$(subst ., ,$(KERNEL_BASE))).x else LINUX_UNAME_VERSION:=$(strip $(shell cat $(LINUX_DIR)/include/config/kernel.release 2>/dev/null)) endif MODULES_SUBDIR:=lib/modules/$(LINUX_UNAME_VERSION) TARGET_MODULES_DIR:=$(LINUX_TARGET_DIR)/$(MODULES_SUBDIR) ifneq ($(TARGET_BUILD),1) PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(if $(BUILD_VARIANT),$(PKG_NAME)-$(BUILD_VARIANT)/)$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION)) endif endif ifneq (,$(findstring uml,$(BOARD))) LINUX_KARCH=um else ifneq (,$(findstring $(ARCH) , aarch64 aarch64_be )) LINUX_KARCH := arm64 else ifneq (,$(findstring $(ARCH) , arceb )) LINUX_KARCH := arc else ifneq (,$(findstring $(ARCH) , armeb )) LINUX_KARCH := arm else ifneq (,$(findstring $(ARCH) , mipsel mips64 mips64el )) LINUX_KARCH := mips else ifneq (,$(findstring $(ARCH) , powerpc64 )) LINUX_KARCH := powerpc else ifneq (,$(findstring $(ARCH) , sh2 sh3 sh4 )) LINUX_KARCH := sh else ifneq (,$(findstring $(ARCH) , i386 x86_64 )) LINUX_KARCH := x86 else LINUX_KARCH := $(ARCH) endif KERNEL_MAKE = $(MAKE) $(KERNEL_MAKEOPTS) KERNEL_MAKE_FLAGS = \ KCFLAGS="$(call iremap,$(BUILD_DIR),$(notdir $(BUILD_DIR)))" \ HOSTCFLAGS="$(HOST_CFLAGS) -Wall -Wmissing-prototypes -Wstrict-prototypes" \ CROSS_COMPILE="$(KERNEL_CROSS)" \ ARCH="$(LINUX_KARCH)" \ KBUILD_HAVE_NLS=no \ KBUILD_BUILD_USER="$(call qstrip,$(CONFIG_KERNEL_BUILD_USER))" \ KBUILD_BUILD_HOST="$(call qstrip,$(CONFIG_KERNEL_BUILD_DOMAIN))" \ KBUILD_BUILD_TIMESTAMP="$(KBUILD_BUILD_TIMESTAMP)" \ KBUILD_BUILD_VERSION="0" \ HOST_LOADLIBES="-L$(STAGING_DIR_HOST)/lib" \ KBUILD_HOSTLDLIBS="-L$(STAGING_DIR_HOST)/lib" \ CONFIG_SHELL="$(BASH)" \ $(if $(findstring c,$(OPENWRT_VERBOSE)),V=1,V='') \ $(if $(PKG_BUILD_ID),LDFLAGS_MODULE=--build-id=0x$(PKG_BUILD_ID)) \ cmd_syscalls= \ $(if $(__package_mk),KBUILD_EXTRA_SYMBOLS="$(wildcard $(PKG_SYMVERS_DIR)/*.symvers)") KERNEL_NOSTDINC_FLAGS = \ -nostdinc $(if $(DUMP),, -isystem $(shell $(TARGET_CC) -print-file-name=include)) ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),) KERNEL_MAKE_FLAGS += \ KERNELRELEASE=$(LINUX_VERSION) endif KERNEL_MAKEOPTS := -C $(LINUX_DIR) $(KERNEL_MAKE_FLAGS) ifdef CONFIG_USE_SPARSE KERNEL_MAKEOPTS += C=1 CHECK=$(STAGING_DIR_HOST)/bin/sparse endif ifneq ($(HOST_OS),Linux) KERNEL_MAKEOPTS += CONFIG_STACK_VALIDATION= export SKIP_STACK_VALIDATION:=1 endif PKG_EXTMOD_SUBDIRS ?= . PKG_SYMVERS_DIR = $(KERNEL_BUILD_DIR)/symvers define collect_module_symvers for subdir in $(PKG_EXTMOD_SUBDIRS); do \ realdir=$$$$(readlink -f $(PKG_BUILD_DIR)); \ grep -F $(PKG_BUILD_DIR) $(PKG_BUILD_DIR)/$$$$subdir/Module.symvers >> $(PKG_BUILD_DIR)/Module.symvers.tmp; \ [ "$(PKG_BUILD_DIR)" = "$$$$realdir" ] || \ grep -F $$$$realdir $(PKG_BUILD_DIR)/$$$$subdir/Module.symvers >> $(PKG_BUILD_DIR)/Module.symvers.tmp; \ done; \ sort -u $(PKG_BUILD_DIR)/Module.symvers.tmp > $(PKG_BUILD_DIR)/Module.symvers; \ mkdir -p $(PKG_SYMVERS_DIR); \ mv $(PKG_BUILD_DIR)/Module.symvers $(PKG_SYMVERS_DIR)/$(PKG_NAME).symvers endef define KernelPackage/hooks ifneq ($(PKG_NAME),kernel) Hooks/Compile/Post += collect_module_symvers endif define KernelPackage/hooks endef endef define KernelPackage/Defaults FILES:= AUTOLOAD:= MODPARAMS:= PKGFLAGS+=nonshared endef # 1: name # 2: install prefix # 3: module priority prefix # 4: required for boot # 5: module list define ModuleAutoLoad $(if $(5), \ mkdir -p $(2)/etc/modules.d; \ ($(foreach mod,$(5), \ echo "$(mod)$(if $(MODPARAMS.$(mod)), $(MODPARAMS.$(mod)),$(if $(MODPARAMS), $(MODPARAMS)))"; )) > $(2)/etc/modules.d/$(3)$(1); \ $(if $(4), \ mkdir -p $(2)/etc/modules-boot.d; \ ln -sf ../modules.d/$(3)$(1) $(2)/etc/modules-boot.d/;)) endef ifeq ($(DUMP)$(TARGET_BUILD),) -include $(LINUX_DIR)/.config endif define KernelPackage/depends $(STAMP_BUILT): $(LINUX_DIR)/.config define KernelPackage/depends endef endef define KernelPackage NAME:=$(1) $(eval $(call Package/Default)) $(eval $(call KernelPackage/Defaults)) $(eval $(call KernelPackage/$(1))) $(eval $(call KernelPackage/$(1)/$(BOARD))) $(eval $(call KernelPackage/$(1)/$(BOARD)/$(if $(SUBTARGET),$(SUBTARGET),generic))) define Package/kmod-$(1) TITLE:=$(TITLE) SECTION:=kernel CATEGORY:=Kernel modules DESCRIPTION:=$(DESCRIPTION) EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE)-$(LINUX_VERMAGIC)) VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE)) PKGFLAGS:=$(PKGFLAGS) $(call KernelPackage/$(1)) $(call KernelPackage/$(1)/$(BOARD)) $(call KernelPackage/$(1)/$(BOARD)/$(if $(SUBTARGET),$(SUBTARGET),generic)) endef ifdef KernelPackage/$(1)/conffiles define Package/kmod-$(1)/conffiles $(call KernelPackage/$(1)/conffiles) endef endif ifdef KernelPackage/$(1)/description define Package/kmod-$(1)/description $(call KernelPackage/$(1)/description) endef endif ifdef KernelPackage/$(1)/config define Package/kmod-$(1)/config $(call KernelPackage/$(1)/config) endef endif $(call KernelPackage/depends) $(call KernelPackage/hooks) ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m y,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),) define Package/kmod-$(1)/install @for mod in $$(call version_filter,$$(FILES)); do \ if grep -q "$$$$$$$${mod##$(LINUX_DIR)/}" "$(LINUX_DIR)/modules.builtin"; then \ echo "NOTICE: module '$$$$$$$$mod' is built-in."; \ elif [ -e $$$$$$$$mod ]; then \ mkdir -p $$(1)/$(MODULES_SUBDIR) ; \ $(CP) -L $$$$$$$$mod $$(1)/$(MODULES_SUBDIR)/ ; \ else \ echo "ERROR: module '$$$$$$$$mod' is missing." >&2; \ exit 1; \ fi; \ done; $(call ModuleAutoLoad,$(1),$$(1),$(filter-out 0-,$(word 1,$(AUTOLOAD))-),$(filter-out 0,$(word 2,$(AUTOLOAD))),$(sort $(wordlist 3,99,$(AUTOLOAD)))) $(call KernelPackage/$(1)/install,$$(1)) endef $(if $(CONFIG_PACKAGE_kmod-$(1)), else compile: $(1)-disabled $(1)-disabled: @echo "WARNING: kmod-$(1) is not available in the kernel config - generating empty package" >&2 define Package/kmod-$(1)/install true endef ) endif $$(eval $$(call BuildPackage,kmod-$(1))) $$(IPKG_kmod-$(1)): $$(wildcard $$(call version_filter,$$(FILES))) endef version_filter=$(if $(findstring @,$(1)),$(shell $(SCRIPT_DIR)/package-metadata.pl version_filter $(KERNEL_PATCHVER) $(1)),$(1)) # 1: priority (optional) # 2: module list # 3: boot flag define AutoLoad $(if $(1),$(1),0) $(if $(3),1,0) $(call version_filter,$(2)) endef # 1: module list # 2: boot flag define AutoProbe $(call AutoLoad,,$(1),$(2)) endef version_field=$(if $(word $(1),$(2)),$(word $(1),$(2)),0) kernel_version_merge=$$(( ($(call version_field,1,$(1)) << 24) + ($(call version_field,2,$(1)) << 16) + ($(call version_field,3,$(1)) << 8) + $(call version_field,4,$(1)) )) ifdef DUMP kernel_version_cmp= else kernel_version_cmp=$(shell [ $(call kernel_version_merge,$(call split_version,$(2))) $(1) $(call kernel_version_merge,$(call split_version,$(3))) ] && echo 1 ) endif CompareKernelPatchVer=$(if $(call kernel_version_cmp,-$(2),$(1),$(3)),1,0) kernel_patchver_gt=$(call kernel_version_cmp,-gt,$(KERNEL_PATCHVER),$(1)) kernel_patchver_ge=$(call kernel_version_cmp,-ge,$(KERNEL_PATCHVER),$(1)) kernel_patchver_eq=$(call kernel_version_cmp,-eq,$(KERNEL_PATCHVER),$(1)) kernel_patchver_le=$(call kernel_version_cmp,-le,$(KERNEL_PATCHVER),$(1)) kernel_patchver_lt=$(call kernel_version_cmp,-lt,$(KERNEL_PATCHVER),$(1))