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48 lines
1.5 KiB
CMake
48 lines
1.5 KiB
CMake
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# SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
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cmake_minimum_required(VERSION 3.16)
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project(examples)
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# Tell cmake where to find BpfObject module
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list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/../../tools/cmake)
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# Build vendored libbpf
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include(ExternalProject)
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ExternalProject_Add(libbpf
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PREFIX libbpf
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SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../../libbpf/src
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CONFIGURE_COMMAND ""
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BUILD_COMMAND make
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BUILD_STATIC_ONLY=1
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OBJDIR=${CMAKE_CURRENT_BINARY_DIR}/libbpf/libbpf
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DESTDIR=${CMAKE_CURRENT_BINARY_DIR}/libbpf
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INCLUDEDIR=
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LIBDIR=
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UAPIDIR=
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install
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BUILD_IN_SOURCE TRUE
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INSTALL_COMMAND ""
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STEP_TARGETS build
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)
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# Set BpfObject input parameters -- note this is usually not necessary unless
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# you're in a highly vendored environment (like libbpf-bootstrap)
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set(BPFOBJECT_BPFTOOL_EXE ${CMAKE_CURRENT_SOURCE_DIR}/../../tools/bpftool)
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set(BPFOBJECT_VMLINUX_H ${CMAKE_CURRENT_SOURCE_DIR}/../../vmlinux/vmlinux.h)
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set(LIBBPF_INCLUDE_DIRS ${CMAKE_CURRENT_BINARY_DIR}/libbpf)
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set(LIBBPF_LIBRARIES ${CMAKE_CURRENT_BINARY_DIR}/libbpf/libbpf.a)
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find_package(BpfObject REQUIRED)
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# Create an executable for each application
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file(GLOB apps *.bpf.c)
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foreach(app ${apps})
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get_filename_component(app_stem ${app} NAME_WE)
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# Build object skeleton and depend skeleton on libbpf build
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bpf_object(${app_stem} ${app_stem}.bpf.c)
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add_dependencies(${app_stem}_skel libbpf-build)
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add_executable(${app_stem} ${app_stem}.c)
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target_link_libraries(${app_stem} ${app_stem}_skel)
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endforeach()
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