1# Copyright (c) PLUMgrid, Inc. 2# Licensed under the Apache License, Version 2.0 (the "License") 3 4include_directories(${CMAKE_CURRENT_BINARY_DIR}) 5include_directories(${CMAKE_CURRENT_SOURCE_DIR}) 6# to be removed 7include_directories(${CMAKE_CURRENT_BINARY_DIR}/frontends/b) 8include_directories(${CMAKE_CURRENT_SOURCE_DIR}/frontends/b) 9include_directories(${CMAKE_CURRENT_SOURCE_DIR}/frontends/clang) 10include_directories(${LLVM_INCLUDE_DIRS}) 11include_directories(${LIBELF_INCLUDE_DIRS}) 12if (LIBLZMA_FOUND) 13 include_directories(${LIBLZMA_INCLUDE_DIRS}) 14endif(LIBLZMA_FOUND) 15if (LIBDEBUGINFOD_FOUND AND ENABLE_LIBDEBUGINFOD) 16 include_directories(${LIBDEBUGINFOD_INCLUDE_DIRS}) 17endif (LIBDEBUGINFOD_FOUND AND ENABLE_LIBDEBUGINFOD) 18# todo: if check for kernel version 19if (CMAKE_USE_LIBBPF_PACKAGE AND LIBBPF_FOUND) 20 include_directories(${LIBBPF_INCLUDE_DIRS}) 21 # create up-to-date linux/bpf.h from virtual_bpf.h (remove string wrapper); 22 # when libbpf is built as a submodule we use its version of linux/bpf.h 23 # so this does similar for the libbpf package, removing reliance on the 24 # system uapi header which can be out of date. 25 execute_process(COMMAND sh -c "cd ${CMAKE_CURRENT_SOURCE_DIR}/compat/linux && grep -ve '\\*\\*\\*\\*' virtual_bpf.h > bpf.h") 26 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/compat) 27else() 28 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/libbpf/include) 29 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/libbpf/include/uapi) 30endif() 31 32# add_definitions has a problem parsing "-D_GLIBCXX_USE_CXX11_ABI=0", this is safer 33separate_arguments(LLVM_DEFINITIONS) 34add_compile_options(${LLVM_DEFINITIONS}) 35 36configure_file(libbcc.pc.in libbcc.pc @ONLY) 37configure_file(bcc_version.h.in bcc_version.h @ONLY) 38 39set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC -DBCC_PROG_TAG_DIR='\"${BCC_PROG_TAG_DIR}\"'") 40set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unused-result") 41set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC -Wno-unused-result") 42 43if (NOT HAVE_REALLOCARRAY_SUPPORT) 44 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DCOMPAT_NEED_REALLOCARRAY") 45endif() 46 47include(static_libstdc++) 48 49if(LIBBPF_INCLUDE_DIR) 50 # Add user libbpf include and notify compilation 51 # that we are using external libbpf. It's checked 52 # in src/cc/libbpf.h and proper files are included. 53 include_directories(${LIBBPF_INCLUDE_DIR}) 54 add_definitions(-DHAVE_EXTERNAL_LIBBPF) 55endif() 56 57if(NOT CMAKE_USE_LIBBPF_PACKAGE) 58 if(LIBBPF_FOUND) 59 set(extract_dir ${CMAKE_CURRENT_BINARY_DIR}/libbpf_a_extract) 60 execute_process(COMMAND sh -c "mkdir -p ${extract_dir} && cd ${extract_dir} && ${CMAKE_AR} x ${LIBBPF_STATIC_LIBRARIES}") 61 file(GLOB libbpf_sources "${extract_dir}/*.o") 62 else() 63 file(GLOB libbpf_sources "libbpf/src/*.c") 64 endif() 65 66 set(libbpf_uapi libbpf/include/uapi/linux/) 67endif() 68 69set(bcc_common_sources bcc_common.cc bpf_module.cc bcc_btf.cc exported_files.cc) 70if (${LLVM_PACKAGE_VERSION} VERSION_EQUAL 6 OR ${LLVM_PACKAGE_VERSION} VERSION_GREATER 6) 71 set(bcc_common_sources ${bcc_common_sources} bcc_debug.cc) 72endif() 73 74if(ENABLE_LLVM_NATIVECODEGEN) 75set(bcc_common_sources ${bcc_common_sources} bpf_module_rw_engine.cc) 76else() 77set(bcc_common_sources ${bcc_common_sources} bpf_module_rw_engine_disabled.cc) 78endif() 79 80set(bcc_table_sources table_storage.cc shared_table.cc bpffs_table.cc json_map_decl_visitor.cc) 81set(bcc_util_sources common.cc) 82set(bcc_sym_sources bcc_syms.cc bcc_elf.c bcc_perf_map.c bcc_proc.c bcc_zip.c) 83set(bcc_common_headers libbpf.h perf_reader.h "${CMAKE_CURRENT_BINARY_DIR}/bcc_version.h") 84set(bcc_table_headers file_desc.h table_desc.h table_storage.h) 85set(bcc_api_headers bcc_common.h bpf_module.h bcc_exception.h bcc_syms.h bcc_proc.h bcc_elf.h) 86if(LIBBPF_FOUND) 87 set(bcc_common_sources ${bcc_common_sources} libbpf.c perf_reader.c) 88endif() 89 90if(ENABLE_CLANG_JIT) 91add_library(bcc-shared SHARED 92 link_all.cc ${bcc_common_sources} ${bcc_table_sources} ${bcc_sym_sources} 93 ${bcc_util_sources}) 94set_target_properties(bcc-shared PROPERTIES VERSION ${REVISION_LAST} SOVERSION 0) 95set_target_properties(bcc-shared PROPERTIES OUTPUT_NAME bcc) 96 97if(ENABLE_USDT) 98 add_definitions(-DEXPORT_USDT) 99 set(bcc_usdt_sources usdt/usdt.cc usdt/usdt_args.cc) 100 # else undefined 101endif() 102 103add_library(bcc-loader-static STATIC ${bcc_sym_sources} ${bcc_util_sources}) 104target_link_libraries(bcc-loader-static elf z) 105add_library(bcc-static STATIC 106 ${bcc_common_sources} ${bcc_table_sources} ${bcc_util_sources} ${bcc_usdt_sources} ${bcc_sym_sources} ${bcc_util_sources}) 107set_target_properties(bcc-static PROPERTIES OUTPUT_NAME bcc) 108set(bcc-lua-static 109 ${bcc_common_sources} ${bcc_table_sources} ${bcc_sym_sources} ${bcc_util_sources}) 110 111set(bpf_sources libbpf.c perf_reader.c ${libbpf_sources} ${bcc_sym_sources} ${bcc_util_sources} ${bcc_usdt_sources}) 112add_library(bpf-static STATIC ${bpf_sources}) 113set_target_properties(bpf-static PROPERTIES OUTPUT_NAME bcc_bpf) 114target_link_libraries(bpf-static elf z) 115add_library(bpf-shared SHARED ${bpf_sources}) 116set_target_properties(bpf-shared PROPERTIES VERSION ${REVISION_LAST} SOVERSION 0) 117set_target_properties(bpf-shared PROPERTIES OUTPUT_NAME bcc_bpf) 118target_link_libraries(bpf-shared elf z) 119if(LIBLZMA_FOUND) 120 target_link_libraries(bpf-shared ${LIBLZMA_LIBRARIES}) 121endif(LIBLZMA_FOUND) 122if(LIBDEBUGINFOD_FOUND) 123 target_link_libraries(bpf-shared ${LIBDEBUGINFOD_LIBRARIES}) 124endif(LIBDEBUGINFOD_FOUND) 125if(CMAKE_USE_LIBBPF_PACKAGE AND LIBBPF_FOUND) 126 target_link_libraries(bpf-shared ${LIBBPF_LIBRARIES}) 127endif() 128 129include(clang_libs) 130set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${clang_lib_exclude_flags}") 131set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${llvm_lib_exclude_flags}") 132 133# bcc_common_libs_for_a for archive libraries 134# bcc_common_libs_for_s for shared libraries 135set(bcc_common_libs clang_frontend 136 -Wl,--whole-archive ${clang_libs} ${llvm_libs} -Wl,--no-whole-archive 137 ${LIBELF_LIBRARIES}) 138if (LIBLZMA_FOUND) 139 list(APPEND bcc_common_libs ${LIBLZMA_LIBRARIES}) 140endif (LIBLZMA_FOUND) 141if (LIBDEBUGINFOD_FOUND) 142 list(APPEND bcc_common_libs ${LIBDEBUGINFOD_LIBRARIES}) 143endif (LIBDEBUGINFOD_FOUND) 144set(bcc_common_libs_for_a ${bcc_common_libs}) 145set(bcc_common_libs_for_s ${bcc_common_libs}) 146set(bcc_common_libs_for_lua clang_frontend 147 ${clang_libs} ${llvm_libs} ${LIBELF_LIBRARIES}) 148if(LIBBPF_FOUND) 149 list(APPEND bcc_common_libs_for_a ${LIBBPF_LIBRARIES}) 150 list(APPEND bcc_common_libs_for_s ${LIBBPF_LIBRARIES}) 151 list(APPEND bcc_common_libs_for_lua ${LIBBPF_LIBRARIES}) 152else() 153 list(APPEND bcc_common_libs_for_a bpf-static) 154 list(APPEND bcc_common_libs_for_s bpf-static) 155 list(APPEND bcc_common_libs_for_lua bpf-static) 156endif() 157 158if(ENABLE_CPP_API) 159 add_subdirectory(api) 160 target_sources(bcc-static PRIVATE $<TARGET_OBJECTS:api-objects>) 161 # Keep all API functions 162 list(APPEND bcc_common_libs_for_s -Wl,--whole-archive api-static -Wl,--no-whole-archive) 163endif() 164 165if(ENABLE_USDT) 166 list(APPEND bcc_api_headers bcc_usdt.h) 167 add_subdirectory(usdt) 168 list(APPEND bcc_common_libs_for_a usdt-static) 169 list(APPEND bcc_common_libs_for_s usdt-static) 170 list(APPEND bcc_common_libs_for_lua usdt-static) 171endif() 172 173add_subdirectory(frontends) 174 175target_sources(bcc-static PRIVATE $<TARGET_OBJECTS:clang_frontend-objects>) 176 177# Link against LLVM libraries 178target_link_libraries(bcc-shared ${bcc_common_libs_for_s}) 179target_link_libraries(bcc-static ${bcc_common_libs_for_a} bcc-loader-static) 180set(bcc-lua-static ${bcc-lua-static} ${bcc_common_libs_for_lua}) 181 182install(TARGETS bcc-shared bcc-static bcc-loader-static bpf-static LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}) 183install(FILES ${bcc_table_headers} DESTINATION include/bcc) 184install(FILES ${bcc_api_headers} DESTINATION include/bcc) 185install(DIRECTORY ${libbpf_uapi} DESTINATION include/bcc/compat/linux FILES_MATCHING PATTERN "*.h") 186install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libbcc.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig) 187endif(ENABLE_CLANG_JIT) 188install(FILES ${bcc_common_headers} DESTINATION include/bcc) 189install(TARGETS bpf-shared LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}) 190