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:=6.12
  17
  18 # Manually include kernel version and hash from kernel details file
  19 GENERIC_PLATFORM_DIR := $(CURDIR)/../../../target/linux/generic
  20 include $(GENERIC_PLATFORM_DIR)/kernel-$(PKG_PATCHVER)
  21
  22 PKG_VERSION:=$(PKG_PATCHVER)$(strip $(LINUX_VERSION-$(PKG_PATCHVER)))
  23 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
  24 PKG_SOURCE_URL:=@KERNEL/linux/kernel/v$(word 1,$(subst ., ,$(PKG_PATCHVER))).x
  25 PKG_HASH:=$(LINUX_KERNEL_HASH-$(strip $(PKG_VERSION)))
  26 PKG_BUILD_DIR:=$(KERNEL_BUILD_DIR)/bpf-headers/$(PKG_NAME)-$(PKG_VERSION)
  27
  28 GENERIC_BACKPORT_DIR := $(GENERIC_PLATFORM_DIR)/backport$(if $(wildcard $(GENERIC_PLATFORM_DIR)/backport-$(PKG_PATCHVER)),-$(PKG_PATCHVER))
  29 GENERIC_PATCH_DIR := $(GENERIC_PLATFORM_DIR)/pending$(if $(wildcard $(GENERIC_PLATFORM_DIR)/pending-$(PKG_PATCHVER)),-$(PKG_PATCHVER))
  30 GENERIC_HACK_DIR := $(GENERIC_PLATFORM_DIR)/hack$(if $(wildcard $(GENERIC_PLATFORM_DIR)/hack-$(PKG_PATCHVER)),-$(PKG_PATCHVER))
  31 GENERIC_FILES_DIR := $(foreach dir,$(wildcard $(GENERIC_PLATFORM_DIR)/files $(GENERIC_PLATFORM_DIR)/files-$(PKG_PATCHVER)),"$(dir)")
  32 PATCH_DIR := $(CURDIR)/patches
  33 FILES_DIR :=
  34
  35 REAL_LINUX_DIR := $(LINUX_DIR)
  36 LINUX_DIR := $(PKG_BUILD_DIR)
  37
  38 include $(INCLUDE_DIR)/bpf.mk
  39 include $(INCLUDE_DIR)/package.mk
  40
  41 define Package/bpf-headers
  42   SECTION:=kernel
  43   CATEGORY:=Kernel modules
  44   TITLE:=eBPF kernel headers
  45   BUILDONLY:=1
  46   HIDDEN:=1
  47 endef
  48
  49 PKG_CONFIG_PATH:=
  50
  51 export HOST_EXTRACFLAGS=-I$(STAGING_DIR_HOST)/include
  52
  53 KERNEL_MAKE := \
  54         $(MAKE) -C $(PKG_BUILD_DIR) \
  55                 ARCH=$(BPF_KARCH) \
  56                 CROSS_COMPILE=$(BPF_ARCH)-linux- \
  57                 LLVM=1 KBUILD_SYM32=n \
  58                 CC="$(CLANG) --target=$(BPF_TARGET)" \
  59                 LD="$(TARGET_CROSS)ld" \
  60                 HOSTCC="$(HOSTCC)" \
  61                 HOSTCXX="$(HOSTCXX)" \
  62                 KBUILD_HOSTLDLIBS="-L$(STAGING_DIR_HOST)/lib" \
  63                 CONFIG_SHELL="$(BASH)" \
  64                 INSTALL_HDR_PATH="$(PKG_BUILD_DIR)/user_headers"
  65
  66 define Build/Patch
  67         $(Kernel/Patch/Default)
  68 endef
  69
  70 define Quilt/Refresh/Package
  71         $(Quilt/Refresh/Kernel)
  72 endef
  73
  74 BPF_DOC = $(PKG_BUILD_DIR)/scripts/bpf_doc.py
  75
  76 define Build/Configure/64
  77         echo 'CONFIG_CPU_MIPS64_R2=y' >> $(PKG_BUILD_DIR)/.config
  78         echo 'CONFIG_64BIT=y' >> $(PKG_BUILD_DIR)/.config
  79 endef
  80
  81 define Build/Configure
  82         grep -vE 'CONFIG_(CPU_.*ENDIAN|HZ)' $(PKG_BUILD_DIR)/arch/mips/configs/generic_defconfig > $(PKG_BUILD_DIR)/.config
  83         echo 'CONFIG_CPU_$(if $(CONFIG_BIG_ENDIAN),BIG,LITTLE)_ENDIAN=y' >> $(PKG_BUILD_DIR)/.config
  84         $(if $(CONFIG_ARCH_64BIT),$(Build/Configure/64))
  85         grep CONFIG_HZ $(REAL_LINUX_DIR)/.config >> $(PKG_BUILD_DIR)/.config
  86         yes '' | $(KERNEL_MAKE) oldconfig
  87         grep 'CONFIG_HZ=' $(REAL_LINUX_DIR)/.config | \
  88                 cut -d= -f2 | \
  89                 bc -q $(LINUX_DIR)/kernel/time/timeconst.bc \
  90                 > $(LINUX_DIR)/include/generated/timeconst.h
  91         $(BPF_DOC) --header \
  92                 --file $(LINUX_DIR)/tools/include/uapi/linux/bpf.h \
  93                 > $(PKG_BUILD_DIR)/tools/lib/bpf/bpf_helper_defs.h
  94 endef
  95
  96 define Build/Compile
  97         $(KERNEL_MAKE) archprepare headers_install
  98 endef
  99
 100 define Build/InstallDev
 101         mkdir -p $(1)/bpf-headers/arch $(1)/bpf-headers/tools
 102         $(CP) \
 103                 $(PKG_BUILD_DIR)/arch/$(BPF_KARCH) \
 104                 $(1)/bpf-headers/arch/
 105         $(CP) \
 106                 $(PKG_BUILD_DIR)/tools/lib \
 107                 $(PKG_BUILD_DIR)/tools/testing \
 108                 $(1)/bpf-headers/tools/
 109         $(CP) \
 110                 $(PKG_BUILD_DIR)/include \
 111                 $(PKG_BUILD_DIR)/samples \
 112                 $(PKG_BUILD_DIR)/scripts \
 113                 $(PKG_BUILD_DIR)/user_headers \
 114                 $(1)/bpf-headers
 115         $(CP) \
 116                 $(CURDIR)/files/stdarg.h \
 117                 $(1)/bpf-headers/include
 118 endef
 119
 120 $(eval $(call BuildPackage,bpf-headers))