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#
# Copyright (C) 2020 Tony Ambardar <itugrok@yahoo.com>
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
PKG_NAME:=bpftools
PKG_VERSION:=5.10.10
PKG_RELEASE:=1
PKG_SOURCE:=linux-$(PKG_VERSION).tar.xz
PKG_SOURCE_URL:=@KERNEL/linux/kernel/v5.x
PKG_HASH:=60ed866fa951522a5255ea37ec3ac2006d3f3427d4783a13ef478464f37cdb19
PKG_MAINTAINER:=Tony Ambardar <itugrok@yahoo.com>
PKG_USE_MIPS16:=0
PKG_BUILD_PARALLEL:=1
PKG_INSTALL:=1
LINUX_VERSION:=$(PKG_VERSION)
LINUX_TLD:=linux-$(LINUX_VERSION)
BPF_FILES:= \
kernel/bpf scripts tools/Makefile tools/bpf tools/perf/perf-sys.h \
tools/arch tools/build tools/include tools/lib tools/scripts
TAR_OPTIONS+= \
--transform="s;$(LINUX_TLD)/;$(PKG_NAME)-$(PKG_VERSION)/;" \
$(addprefix $(LINUX_TLD)/,$(BPF_FILES))
include $(INCLUDE_DIR)/package.mk
include $(INCLUDE_DIR)/nls.mk
define Package/bpftool/Default
SECTION:=net
CATEGORY:=Network
TITLE:=bpftool - eBPF subsystem utility
LICENSE:=GPL-2.0-only OR BSD-2-Clause
URL:=http://www.kernel.org
DEPENDS:=+libelf
endef
define Package/bpftool-minimal
$(call Package/bpftool/Default)
TITLE+= (Minimal)
VARIANT:=minimal
DEFAULT_VARIANT:=1
PROVIDES:=bpftool
ALTERNATIVES:=200:/usr/sbin/bpftool:/usr/libexec/bpftool-minimal
endef
define Package/bpftool-full
$(call Package/bpftool/Default)
TITLE+= (Full)
VARIANT:=full
PROVIDES:=bpftool
ALTERNATIVES:=300:/usr/sbin/bpftool:/usr/libexec/bpftool-full
DEPENDS+= +libbfd +libopcodes
endef
define Package/bpftool-minimal/description
A tool for inspection and simple manipulation of eBPF programs and maps.
endef
define Package/bpftool-full/description
A tool for inspection and simple manipulation of eBPF programs and maps.
This full version uses libbfd and libopcodes to support disassembly of
eBPF programs and jited code.
endef
define Package/libbpf
SECTION:=libs
CATEGORY:=Libraries
TITLE:=libbpf - eBPF helper library
VARIANT:=lib
LICENSE:=LGPL-2.1 OR BSD-2-Clause
ABI_VERSION:=0
URL:=http://www.kernel.org
DEPENDS:=+libelf
endef
define Package/libbpf/description
libbpf is a library for loading eBPF programs and reading and manipulating eBPF objects from user-space.
endef
# LTO not compatible with DSO using PIC
ifneq ($(BUILD_VARIANT),lib)
TARGET_CFLAGS += -ffunction-sections -fdata-sections -flto
TARGET_LDFLAGS += -Wl,--gc-sections
endif
ifneq ($(INTL_FULL),)
TARGET_LDFLAGS += -Wl,-lintl
endif
MAKE_FLAGS += \
EXTRA_CFLAGS="$(TARGET_CFLAGS) $(TARGET_CPPFLAGS)" \
LDFLAGS="$(TARGET_LDFLAGS)" \
BPFTOOL_VERSION="$(LINUX_VERSION)" \
FEATURES_DUMP="$(PKG_BUILD_DIR)/FEATURE-DUMP.openwrt" \
OUTPUT="$(PKG_BUILD_DIR)/" \
prefix="/usr" \
$(if $(findstring c,$(OPENWRT_VERBOSE)),V=1,V='')
ifeq ($(BUILD_VARIANT),full)
HAVE_LIBBFD:=1
HAVE_LIBCAP:=0
HAVE_CLANG:=0
MAKE_PATH:=tools/bpf/bpftool
else ifeq ($(BUILD_VARIANT),minimal)
HAVE_LIBBFD:=0
HAVE_LIBCAP:=0
HAVE_CLANG:=0
MAKE_PATH:=tools/bpf/bpftool
else ifeq ($(BUILD_VARIANT),lib)
HAVE_LIBBFD:=0
HAVE_LIBCAP:=0
HAVE_CLANG:=0
MAKE_PATH:=tools/lib/bpf
endif
# Perform a "throw-away" make to create a FEATURE-DUMP.* file to edit later.
# The "//" in the make target is actually needed, very unPOSIXly.
define Build/Configure
+$(MAKE_VARS) $(MAKE) $(PKG_JOBS) -C $(PKG_BUILD_DIR)/tools/bpf/bpftool \
$(MAKE_FLAGS) FEATURES_DUMP= $(PKG_BUILD_DIR)//libbpf/libbpf.a
(cd $(PKG_BUILD_DIR); cat FEATURE-DUMP.bpftool libbpf/FEATURE-DUMP.libbpf \
| sort | uniq > FEATURE-DUMP.openwrt)
$(SED) 's/feature-libbfd=1/feature-libbfd=$(HAVE_LIBBFD)/' \
-e 's/feature-libcap=1/feature-libcap=$(HAVE_LIBCAP)/' \
-e 's/feature-clang-bpf-global-var=1/feature-clang-bpf-global-var=$(HAVE_CLANG)/' \
$(PKG_BUILD_DIR)/FEATURE-DUMP.openwrt
endef
define Build/InstallDev/libbpf
$(INSTALL_DIR) $(1)/usr/include/bpf
$(CP) $(PKG_INSTALL_DIR)/usr/include/bpf/*.h $(1)/usr/include/bpf/
$(INSTALL_DIR) $(1)/usr/lib
$(CP) $(PKG_INSTALL_DIR)/usr/lib$(LIB_SUFFIX)/libbpf.{a,so*} \
$(1)/usr/lib/
$(INSTALL_DIR) $(1)/usr/lib/pkgconfig
$(CP) $(PKG_INSTALL_DIR)/usr/lib$(LIB_SUFFIX)/pkgconfig/libbpf.pc \
$(1)/usr/lib/pkgconfig/
endef
ifeq ($(BUILD_VARIANT),lib)
Build/InstallDev=$(Build/InstallDev/libbpf)
endif
define Package/bpftool-$(BUILD_VARIANT)/install
$(INSTALL_DIR) $(1)/usr/libexec
$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/bpftool \
$(1)/usr/libexec/bpftool-$(BUILD_VARIANT)
endef
define Package/libbpf/install
$(INSTALL_DIR) $(1)/usr/lib
$(CP) $(PKG_INSTALL_DIR)/usr/lib$(LIB_SUFFIX)/libbpf.so.* $(1)/usr/lib/
endef
$(eval $(call BuildPackage,libbpf))
$(eval $(call BuildPackage,bpftool-full))
$(eval $(call BuildPackage,bpftool-minimal))
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