# Copyright (c) PLUMgrid, Inc. # Licensed under the Apache License, Version 2.0 (the "License") cmake_minimum_required(VERSION 2.8.7) project(bcc) if(NOT CMAKE_BUILD_TYPE) set(CMAKE_BUILD_TYPE Release) endif() if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT) set(CMAKE_INSTALL_PREFIX "/usr" CACHE PATH "path to install" FORCE) endif() enable_testing() # populate submodules (libbpf) if(NOT CMAKE_USE_LIBBPF_PACKAGE) if(NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/src/cc/libbpf/src) execute_process(COMMAND git submodule update --init --recursive WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} RESULT_VARIABLE UPDATE_RESULT) if(UPDATE_RESULT AND NOT UPDATE_RESULT EQUAL 0) message(WARNING "Failed to update submodule libbpf") endif() else() execute_process(COMMAND git diff --shortstat ${CMAKE_CURRENT_SOURCE_DIR}/src/cc/libbpf/ OUTPUT_VARIABLE DIFF_STATUS) if("${DIFF_STATUS}" STREQUAL "") execute_process(COMMAND git submodule update --init --recursive WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} RESULT_VARIABLE UPDATE_RESULT) if(UPDATE_RESULT AND NOT UPDATE_RESULT EQUAL 0) message(WARNING "Failed to update submodule libbpf") endif() else() message(WARNING "submodule libbpf dirty, so no sync") endif() endif() endif() # It's possible to use other kernel headers with # KERNEL_INCLUDE_DIRS build variable, like: # $ cd # $ make INSTALL_HDR_PATH=/tmp/headers headers_install # $ cd # $ cmake -DKERNEL_INCLUDE_DIRS=/tmp/headers/include/ ... include_directories(${KERNEL_INCLUDE_DIRS}) option(ENABLE_NO_PIE "Build bcc-lua without PIE" ON) include(cmake/GetGitRevisionDescription.cmake) include(cmake/version.cmake) include(CMakeDependentOption) include(GNUInstallDirs) include(CheckCXXCompilerFlag) include(cmake/FindCompilerFlag.cmake) option(ENABLE_LLVM_NATIVECODEGEN "Enable use of llvm nativecodegen module (needed by rw-engine)" ON) option(ENABLE_RTTI "Enable compiling with real time type information" OFF) option(ENABLE_LLVM_SHARED "Enable linking LLVM as a shared library" OFF) option(ENABLE_CLANG_JIT "Enable Loading BPF through Clang Frontend" ON) option(ENABLE_USDT "Enable User-level Statically Defined Tracing" ON) option(ENABLE_EXAMPLES "Build examples" ON) option(ENABLE_MAN "Build man pages" ON) option(ENABLE_TESTS "Build tests" ON) CMAKE_DEPENDENT_OPTION(ENABLE_CPP_API "Enable C++ API" ON "ENABLE_USDT" OFF) set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake) if (CMAKE_USE_LIBBPF_PACKAGE) find_package(LibBpf) endif() if(NOT PYTHON_ONLY) find_package(LLVM REQUIRED CONFIG) message(STATUS "Found LLVM: ${LLVM_INCLUDE_DIRS} ${LLVM_PACKAGE_VERSION}") if(ENABLE_CLANG_JIT) find_package(BISON) find_package(FLEX) find_package(LibElf REQUIRED) find_package(LibDebuginfod) if(CLANG_DIR) set(CMAKE_FIND_ROOT_PATH "${CLANG_DIR}") include_directories("${CLANG_DIR}/include") endif() # clang is linked as a library, but the library path searching is # primitively supported, unlike libLLVM set(CLANG_SEARCH "/opt/local/llvm/lib;/usr/lib/llvm-3.7/lib;${LLVM_LIBRARY_DIRS}") find_library(libclangAnalysis NAMES clangAnalysis clang-cpp HINTS ${CLANG_SEARCH}) find_library(libclangAST NAMES clangAST clang-cpp HINTS ${CLANG_SEARCH}) find_library(libclangBasic NAMES clangBasic clang-cpp HINTS ${CLANG_SEARCH}) find_library(libclangCodeGen NAMES clangCodeGen clang-cpp HINTS ${CLANG_SEARCH}) find_library(libclangDriver NAMES clangDriver clang-cpp HINTS ${CLANG_SEARCH}) find_library(libclangEdit NAMES clangEdit clang-cpp HINTS ${CLANG_SEARCH}) find_library(libclangFrontend NAMES clangFrontend clang-cpp HINTS ${CLANG_SEARCH}) find_library(libclangLex NAMES clangLex clang-cpp HINTS ${CLANG_SEARCH}) find_library(libclangParse NAMES clangParse clang-cpp HINTS ${CLANG_SEARCH}) find_library(libclangRewrite NAMES clangRewrite clang-cpp HINTS ${CLANG_SEARCH}) find_library(libclangSema NAMES clangSema clang-cpp HINTS ${CLANG_SEARCH}) find_library(libclangSerialization NAMES clangSerialization clang-cpp HINTS ${CLANG_SEARCH}) find_library(libclangASTMatchers NAMES clangASTMatchers clang-cpp HINTS ${CLANG_SEARCH}) find_library(libclang-shared libclang-cpp.so HINTS ${CLANG_SEARCH}) if(libclangBasic STREQUAL "libclangBasic-NOTFOUND") message(FATAL_ERROR "Unable to find clang libraries") endif() FOREACH(DIR ${LLVM_INCLUDE_DIRS}) include_directories("${DIR}/../tools/clang/include") ENDFOREACH() endif(ENABLE_CLANG_JIT) # Set to a string path if system places kernel lib directory in # non-default location. if(NOT DEFINED BCC_KERNEL_MODULES_DIR) set(BCC_KERNEL_MODULES_DIR "/lib/modules") endif() if(NOT DEFINED BCC_PROG_TAG_DIR) set(BCC_PROG_TAG_DIR "/var/tmp/bcc") endif() # As reported in issue #735, GCC 6 has some behavioral problems when # dealing with -isystem. Hence, skip the warning optimization # altogether on that compiler. option(USINGISYSTEM "using -isystem" ON) execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpversion OUTPUT_VARIABLE GCC_VERSION) if (USINGISYSTEM AND GCC_VERSION VERSION_LESS 6.0) # iterate over all available directories in LLVM_INCLUDE_DIRS to # generate a correctly tokenized list of parameters foreach(ONE_LLVM_INCLUDE_DIR ${LLVM_INCLUDE_DIRS}) set(CXX_ISYSTEM_DIRS "${CXX_ISYSTEM_DIRS} -isystem ${ONE_LLVM_INCLUDE_DIR}") endforeach() endif() set(CMAKE_CXX_STANDARD_REQUIRED ON) set(CMAKE_CXX_STANDARD 14) endif(NOT PYTHON_ONLY) set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall") set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall ${CXX_ISYSTEM_DIRS}") add_subdirectory(src) add_subdirectory(introspection) if(ENABLE_CLANG_JIT) if(ENABLE_EXAMPLES) add_subdirectory(examples) endif(ENABLE_EXAMPLES) if(ENABLE_MAN) add_subdirectory(man) endif(ENABLE_MAN) if(ENABLE_TESTS) add_subdirectory(tests) endif(ENABLE_TESTS) add_subdirectory(tools) endif(ENABLE_CLANG_JIT)