1 # Copyright (c) PLUMgrid, Inc. 2 # Licensed under the Apache License, Version 2.0 (the "License") 3 cmake_minimum_required(VERSION 2.8.7) 4 5 project(bcc) 6 if(NOT CMAKE_BUILD_TYPE) 7 set(CMAKE_BUILD_TYPE Release) 8 endif() 9 10 enable_testing() 11 12 include(cmake/GetGitRevisionDescription.cmake) 13 include(cmake/version.cmake) 14 include(CMakeDependentOption) 15 include(GNUInstallDirs) 16 include(CheckCXXCompilerFlag) 17 include(cmake/FindCompilerFlag.cmake) 18 19 option(ENABLE_LLVM_SHARED "Enable linking LLVM as a shared library" OFF) 20 option(ENABLE_CLANG_JIT "Enable Loading BPF through Clang Frontend" ON) 21 option(ENABLE_USDT "Enable User-level Statically Defined Tracing" ON) 22 CMAKE_DEPENDENT_OPTION(ENABLE_CPP_API "Enable C++ API" ON "ENABLE_USDT" OFF) 23 24 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake) 25 26 if(NOT PYTHON_ONLY AND ENABLE_CLANG_JIT) 27 find_package(BISON) 28 find_package(FLEX) 29 find_package(LLVM REQUIRED CONFIG) 30 message(STATUS "Found LLVM: ${LLVM_INCLUDE_DIRS} ${LLVM_PACKAGE_VERSION}") 31 find_package(LibElf REQUIRED) 32 33 # clang is linked as a library, but the library path searching is 34 # primitively supported, unlike libLLVM 35 set(CLANG_SEARCH "/opt/local/llvm/lib;/usr/lib/llvm-3.7/lib;${LLVM_LIBRARY_DIRS}") 36 find_library(libclangAnalysis NAMES clangAnalysis HINTS ${CLANG_SEARCH}) 37 find_library(libclangAST NAMES clangAST HINTS ${CLANG_SEARCH}) 38 find_library(libclangBasic NAMES clangBasic HINTS ${CLANG_SEARCH}) 39 find_library(libclangCodeGen NAMES clangCodeGen HINTS ${CLANG_SEARCH}) 40 find_library(libclangDriver NAMES clangDriver HINTS ${CLANG_SEARCH}) 41 find_library(libclangEdit NAMES clangEdit HINTS ${CLANG_SEARCH}) 42 find_library(libclangFrontend NAMES clangFrontend HINTS ${CLANG_SEARCH}) 43 find_library(libclangLex NAMES clangLex HINTS ${CLANG_SEARCH}) 44 find_library(libclangParse NAMES clangParse HINTS ${CLANG_SEARCH}) 45 find_library(libclangRewrite NAMES clangRewrite HINTS ${CLANG_SEARCH}) 46 find_library(libclangSema NAMES clangSema HINTS ${CLANG_SEARCH}) 47 find_library(libclangSerialization NAMES clangSerialization HINTS ${CLANG_SEARCH}) 48 find_library(libclangASTMatchers NAMES clangASTMatchers HINTS ${CLANG_SEARCH}) 49 if(libclangBasic STREQUAL "libclangBasic-NOTFOUND") 50 message(FATAL_ERROR "Unable to find clang libraries") 51 endif() 52 FOREACH(DIR ${LLVM_INCLUDE_DIRS}) 53 include_directories("${DIR}/../tools/clang/include") 54 ENDFOREACH() 55 56 # Set to a string path if system places kernel lib directory in 57 # non-default location. 58 if(NOT DEFINED BCC_KERNEL_MODULES_DIR) 59 set(BCC_KERNEL_MODULES_DIR "/lib/modules") 60 endif() 61 62 if(NOT DEFINED BCC_PROG_TAG_DIR) 63 set(BCC_PROG_TAG_DIR "/var/tmp/bcc") 64 endif() 65 66 # As reported in issue #735, GCC 6 has some behavioral problems when 67 # dealing with -isystem. Hence, skip the warning optimization 68 # altogether on that compiler. 69 option(USINGISYSTEM "using -isystem" ON) 70 execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpversion OUTPUT_VARIABLE GCC_VERSION) 71 if (USINGISYSTEM AND GCC_VERSION VERSION_LESS 6.0) 72 # iterate over all available directories in LLVM_INCLUDE_DIRS to 73 # generate a correctly tokenized list of parameters 74 foreach(ONE_LLVM_INCLUDE_DIR ${LLVM_INCLUDE_DIRS}) 75 set(CXX_ISYSTEM_DIRS "${CXX_ISYSTEM_DIRS} -isystem ${ONE_LLVM_INCLUDE_DIR}") 76 endforeach() 77 endif() 78 79 set(CMAKE_CXX_STANDARD_REQUIRED ON) 80 set(CMAKE_CXX_STANDARD 11) 81 82 endif(NOT PYTHON_ONLY AND ENABLE_CLANG_JIT) 83 84 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall") 85 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall ${CXX_ISYSTEM_DIRS}") 86 87 add_subdirectory(src) 88 add_subdirectory(introspection) 89 if(ENABLE_CLANG_JIT) 90 add_subdirectory(examples) 91 add_subdirectory(man) 92 add_subdirectory(tests) 93 add_subdirectory(tools) 94 endif(ENABLE_CLANG_JIT) 95
