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# Copyright (c) 2018 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
LIBBPF_DEBUG?=n
libbpf_version := 0.1.0
libbpf_tarball := v$(libbpf_version).tar.gz
libbpf_tarball_md5sum_0.1.0 := 00b991a6e2d28d797a56ab1575ed40e1
libbpf_tarball_md5sum := $(libbpf_tarball_md5sum_$(libbpf_version))
libbpf_tarball_strip_dirs := 1
libbpf_url := https://github.com/libbpf/libbpf/archive/$(libbpf_tarball)
LIBBPF_CFLAGS:=-g -Werror -Wall -fPIC -fvisibility=hidden
ifeq ($(LIBBPF_DEBUG),y)
LIBBPF_CFLAGS+= -O0
else
LIBBPF_CFLAGS+= -O2
endif
IF_XDP:=$(shell echo "\#include <linux/if_xdp.h>" | $(CC) -E -xc - > /dev/null 2>&1)
IF_XDP:=$(.SHELLSTATUS)
define libbpf_config_cmds
@true
endef
define libbpf_build_cmds__
BUILD_STATIC_ONLY=y OBJDIR='$(libbpf_build_dir)' PREFIX='' DESTDIR='$(libbpf_install_dir)' CFLAGS='$(LIBBPF_CFLAGS)' make -C '$(libbpf_src_dir)/src' $(1) > $(2)
endef
define libbpf_build_cmds
$(call libbpf_build_cmds__,,$(libbpf_build_log))
endef
define libbpf_install_cmds
$(call libbpf_build_cmds__,install,$(libbpf_install_log))
endef
ifneq ($(IF_XDP),0)
$(warning "linux/if_xdp.h was not found on this system. libbpf will be skipped.")
libbpf-install:
@true
else
$(eval $(call package,libbpf))
endif
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