package/kernel/bpf-headers/Makefile

   1 #
   2 # Copyright (C) 2006-2009 OpenWrt.org
   3 #
   4 # This is free software, licensed under the GNU General Public License v2.
   5 # See /LICENSE for more information.
   6 #
   7 include $(TOPDIR)/rules.mk
   8
   9 override QUILT:=
  10 override HOST_QUILT:=
  11
  12 include $(INCLUDE_DIR)/kernel.mk
  13
  14
  15 PKG_NAME:=linux
  16 PKG_PATCHVER:=5.10
  17 PKG_VERSION:=$(PKG_PATCHVER)$(strip $(LINUX_VERSION-$(PKG_PATCHVER)))
  18 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
  19 PKG_SOURCE_URL:=$(LINUX_SITE)
  20 PKG_HASH:=$(LINUX_KERNEL_HASH-$(strip $(PKG_VERSION)))
  21 PKG_BUILD_DIR:=$(KERNEL_BUILD_DIR)/bpf-headers/$(PKG_NAME)-$(PKG_VERSION)
  22
  23 GENERIC_BACKPORT_DIR := $(GENERIC_PLATFORM_DIR)/backport$(if $(wildcard $(GENERIC_PLATFORM_DIR)/backport-$(PKG_PATCHVER)),-$(PKG_PATCHVER))
  24 GENERIC_PATCH_DIR := $(GENERIC_PLATFORM_DIR)/pending$(if $(wildcard $(GENERIC_PLATFORM_DIR)/pending-$(PKG_PATCHVER)),-$(PKG_PATCHVER))
  25 GENERIC_HACK_DIR := $(GENERIC_PLATFORM_DIR)/hack$(if $(wildcard $(GENERIC_PLATFORM_DIR)/hack-$(PKG_PATCHVER)),-$(PKG_PATCHVER))
  26 GENERIC_FILES_DIR := $(foreach dir,$(wildcard $(GENERIC_PLATFORM_DIR)/files $(GENERIC_PLATFORM_DIR)/files-$(PKG_PATCHVER)),"$(dir)")
  27 PATCH_DIR := $(CURDIR)/patches
  28 FILES_DIR :=
  29
  30 REAL_LINUX_DIR := $(LINUX_DIR)
  31 LINUX_DIR := $(PKG_BUILD_DIR)
  32
  33 include $(INCLUDE_DIR)/bpf.mk
  34 include $(INCLUDE_DIR)/package.mk
  35
  36 define Package/bpf-headers
  37   SECTION:=kernel
  38   CATEGORY:=Kernel
  39   TITLE:=eBPF kernel headers
  40   BUILDONLY:=1
  41   HIDDEN:=1
  42 endef
  43
  44 export HOST_EXTRACFLAGS=-I$(STAGING_DIR_HOST)/include
  45
  46 KERNEL_MAKE := \
  47         $(MAKE) -C $(PKG_BUILD_DIR) \
  48                 ARCH=$(BPF_KARCH) \
  49                 CROSS_COMPILE=$(BPF_ARCH)-linux- \
  50                 LLVM=1 CC="$(CLANG)" LD="$(TARGET_CROSS)ld" \
  51                 HOSTCC="$(HOSTCC)" \
  52                 HOSTCXX="$(HOSTCXX)" \
  53                 HOST_LOADLIBES="-L$(STAGING_DIR_HOST)/lib" \
  54                 KBUILD_HOSTLDLIBS="-L$(STAGING_DIR_HOST)/lib" \
  55                 CONFIG_SHELL="$(BASH)" \
  56                 INSTALL_HDR_PATH="$(PKG_BUILD_DIR)/user_headers"
  57
  58 define Build/Patch
  59         $(Kernel/Patch/Default)
  60 endef
  61
  62 BPF_DOC = $(PKG_BUILD_DIR)/scripts/bpf_helpers_doc.py
  63
  64 define Build/Configure
  65         grep -vE 'CONFIG_(CPU_.*ENDIAN|HZ)' $(PKG_BUILD_DIR)/arch/mips/configs/generic_defconfig > $(PKG_BUILD_DIR)/.config
  66         echo 'CONFIG_CPU_$(if $(CONFIG_BIG_ENDIAN),BIG,LITTLE)_ENDIAN=y' >> $(PKG_BUILD_DIR)/.config
  67         grep CONFIG_HZ $(REAL_LINUX_DIR)/.config >> $(PKG_BUILD_DIR)/.config
  68         yes '' | $(KERNEL_MAKE) oldconfig
  69         grep 'CONFIG_HZ=' $(REAL_LINUX_DIR)/.config | \
  70                 cut -d= -f2 | \
  71                 bc -q $(LINUX_DIR)/kernel/time/timeconst.bc \
  72                 > $(LINUX_DIR)/include/generated/timeconst.h
  73         $(BPF_DOC) --header \
  74                 --file $(LINUX_DIR)/tools/include/uapi/linux/bpf.h \
  75                 > $(PKG_BUILD_DIR)/tools/lib/bpf/bpf_helper_defs.h
  76 endef
  77
  78 define Build/Compile
  79         $(KERNEL_MAKE) archprepare headers_install
  80 endef
  81
  82 define Build/InstallDev
  83         mkdir -p $(1)/bpf-headers/arch $(1)/bpf-headers/tools
  84         $(CP) \
  85                 $(PKG_BUILD_DIR)/arch/$(BPF_KARCH) \
  86                 $(1)/bpf-headers/arch/
  87         $(CP) \
  88                 $(PKG_BUILD_DIR)/tools/lib \
  89                 $(PKG_BUILD_DIR)/tools/testing \
  90                 $(1)/bpf-headers/tools/
  91         $(CP) \
  92                 $(PKG_BUILD_DIR)/include \
  93                 $(PKG_BUILD_DIR)/samples \
  94                 $(PKG_BUILD_DIR)/scripts \
  95                 $(PKG_BUILD_DIR)/user_headers \
  96                 $(1)/bpf-headers
  97 endef
  98
  99 $(eval $(call BuildPackage,bpf-headers))