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:=5.15
  17 # Manually include kernel version and hash from kernel details file
  18 include $(INCLUDE_DIR)/kernel-$(PKG_PATCHVER)
  19
  20 PKG_VERSION:=$(PKG_PATCHVER)$(strip $(LINUX_VERSION-$(PKG_PATCHVER)))
  21 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
  22 PKG_SOURCE_URL:=$(LINUX_SITE)
  23 PKG_HASH:=$(LINUX_KERNEL_HASH-$(strip $(PKG_VERSION)))
  24 PKG_BUILD_DIR:=$(KERNEL_BUILD_DIR)/bpf-headers/$(PKG_NAME)-$(PKG_VERSION)
  25
  26 GENERIC_PLATFORM_DIR := $(CURDIR)/../../../target/linux/generic
  27 GENERIC_BACKPORT_DIR := $(GENERIC_PLATFORM_DIR)/backport$(if $(wildcard $(GENERIC_PLATFORM_DIR)/backport-$(PKG_PATCHVER)),-$(PKG_PATCHVER))
  28 GENERIC_PATCH_DIR := $(GENERIC_PLATFORM_DIR)/pending$(if $(wildcard $(GENERIC_PLATFORM_DIR)/pending-$(PKG_PATCHVER)),-$(PKG_PATCHVER))
  29 GENERIC_HACK_DIR := $(GENERIC_PLATFORM_DIR)/hack$(if $(wildcard $(GENERIC_PLATFORM_DIR)/hack-$(PKG_PATCHVER)),-$(PKG_PATCHVER))
  30 GENERIC_FILES_DIR := $(foreach dir,$(wildcard $(GENERIC_PLATFORM_DIR)/files $(GENERIC_PLATFORM_DIR)/files-$(PKG_PATCHVER)),"$(dir)")
  31 PATCH_DIR := $(CURDIR)/patches
  32 FILES_DIR :=
  33
  34 REAL_LINUX_DIR := $(LINUX_DIR)
  35 LINUX_DIR := $(PKG_BUILD_DIR)
  36
  37 include $(INCLUDE_DIR)/bpf.mk
  38 include $(INCLUDE_DIR)/package.mk
  39
  40 define Package/bpf-headers
  41   SECTION:=kernel
  42   CATEGORY:=Kernel
  43   TITLE:=eBPF kernel headers
  44   BUILDONLY:=1
  45   HIDDEN:=1
  46 endef
  47
  48 PKG_CONFIG_PATH:=
  49
  50 export HOST_EXTRACFLAGS=-I$(STAGING_DIR_HOST)/include
  51
  52 KERNEL_MAKE := \
  53         $(MAKE) -C $(PKG_BUILD_DIR) \
  54                 ARCH=$(BPF_KARCH) \
  55                 CROSS_COMPILE=$(BPF_ARCH)-linux- \
  56                 LLVM=1 CC="$(CLANG)" LD="$(TARGET_CROSS)ld" \
  57                 HOSTCC="$(HOSTCC)" \
  58                 HOSTCXX="$(HOSTCXX)" \
  59                 HOST_LOADLIBES="-L$(STAGING_DIR_HOST)/lib" \
  60                 KBUILD_HOSTLDLIBS="-L$(STAGING_DIR_HOST)/lib" \
  61                 CONFIG_SHELL="$(BASH)" \
  62                 INSTALL_HDR_PATH="$(PKG_BUILD_DIR)/user_headers"
  63
  64 define Build/Patch
  65         $(Kernel/Patch/Default)
  66 endef
  67
  68 BPF_DOC = $(PKG_BUILD_DIR)/scripts/bpf_doc.py
  69
  70 define Build/Configure/64
  71         echo 'CONFIG_CPU_MIPS64_R2=y' >> $(PKG_BUILD_DIR)/.config
  72         echo 'CONFIG_64BIT=y' >> $(PKG_BUILD_DIR)/.config
  73 endef
  74
  75 define Build/Configure
  76         grep -vE 'CONFIG_(CPU_.*ENDIAN|HZ)' $(PKG_BUILD_DIR)/arch/mips/configs/generic_defconfig > $(PKG_BUILD_DIR)/.config
  77         echo 'CONFIG_CPU_$(if $(CONFIG_BIG_ENDIAN),BIG,LITTLE)_ENDIAN=y' >> $(PKG_BUILD_DIR)/.config
  78         $(if $(CONFIG_ARCH_64BIT),$(Build/Configure/64))
  79         grep CONFIG_HZ $(REAL_LINUX_DIR)/.config >> $(PKG_BUILD_DIR)/.config
  80         yes '' | $(KERNEL_MAKE) oldconfig
  81         grep 'CONFIG_HZ=' $(REAL_LINUX_DIR)/.config | \
  82                 cut -d= -f2 | \
  83                 bc -q $(LINUX_DIR)/kernel/time/timeconst.bc \
  84                 > $(LINUX_DIR)/include/generated/timeconst.h
  85         $(BPF_DOC) --header \
  86                 --file $(LINUX_DIR)/tools/include/uapi/linux/bpf.h \
  87                 > $(PKG_BUILD_DIR)/tools/lib/bpf/bpf_helper_defs.h
  88 endef
  89
  90 define Build/Compile
  91         $(KERNEL_MAKE) archprepare headers_install
  92 endef
  93
  94 define Build/InstallDev
  95         mkdir -p $(1)/bpf-headers/arch $(1)/bpf-headers/tools
  96         $(CP) \
  97                 $(PKG_BUILD_DIR)/arch/$(BPF_KARCH) \
  98                 $(1)/bpf-headers/arch/
  99         $(CP) \
 100                 $(PKG_BUILD_DIR)/tools/lib \
 101                 $(PKG_BUILD_DIR)/tools/testing \
 102                 $(1)/bpf-headers/tools/
 103         $(CP) \
 104                 $(PKG_BUILD_DIR)/include \
 105                 $(PKG_BUILD_DIR)/samples \
 106                 $(PKG_BUILD_DIR)/scripts \
 107                 $(PKG_BUILD_DIR)/user_headers \
 108                 $(1)/bpf-headers
 109         $(CP) \
 110                 $(CURDIR)/files/stdarg.h \
 111                 $(1)/bpf-headers/include
 112 endef
 113
 114 $(eval $(call BuildPackage,bpf-headers))