1 2 include(split_list) 3 4 macro(build_external_gtest) 5 include(ExternalProject) 6 set(GTEST_FLAGS "") 7 if (BENCHMARK_USE_LIBCXX) 8 if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang") 9 list(APPEND GTEST_FLAGS -stdlib=libc++) 10 else() 11 message(WARNING "Unsupported compiler (${CMAKE_CXX_COMPILER}) when using libc++") 12 endif() 13 endif() 14 if (BENCHMARK_BUILD_32_BITS) 15 list(APPEND GTEST_FLAGS -m32) 16 endif() 17 if (NOT "${CMAKE_CXX_FLAGS}" STREQUAL "") 18 list(APPEND GTEST_FLAGS ${CMAKE_CXX_FLAGS}) 19 endif() 20 string(TOUPPER "${CMAKE_BUILD_TYPE}" GTEST_BUILD_TYPE) 21 if ("${GTEST_BUILD_TYPE}" STREQUAL "COVERAGE") 22 set(GTEST_BUILD_TYPE "DEBUG") 23 endif() 24 # FIXME: Since 10/Feb/2017 the googletest trunk has had a bug where 25 # -Werror=unused-function fires during the build on OS X. This is a temporary 26 # workaround to keep our travis bots from failing. It should be removed 27 # once gtest is fixed. 28 if (NOT "${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC") 29 list(APPEND GTEST_FLAGS "-Wno-unused-function") 30 endif() 31 split_list(GTEST_FLAGS) 32 set(EXCLUDE_FROM_ALL_OPT "") 33 set(EXCLUDE_FROM_ALL_VALUE "") 34 if (${CMAKE_VERSION} VERSION_GREATER "3.0.99") 35 set(EXCLUDE_FROM_ALL_OPT "EXCLUDE_FROM_ALL") 36 set(EXCLUDE_FROM_ALL_VALUE "ON") 37 endif() 38 ExternalProject_Add(googletest 39 ${EXCLUDE_FROM_ALL_OPT} ${EXCLUDE_FROM_ALL_VALUE} 40 GIT_REPOSITORY https://github.com/google/googletest.git 41 GIT_TAG master 42 PREFIX "${CMAKE_BINARY_DIR}/googletest" 43 INSTALL_DIR "${CMAKE_BINARY_DIR}/googletest" 44 CMAKE_CACHE_ARGS 45 -DCMAKE_BUILD_TYPE:STRING=${GTEST_BUILD_TYPE} 46 -DCMAKE_C_COMPILER:STRING=${CMAKE_C_COMPILER} 47 -DCMAKE_CXX_COMPILER:STRING=${CMAKE_CXX_COMPILER} 48 -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR> 49 -DCMAKE_INSTALL_LIBDIR:PATH=<INSTALL_DIR>/lib 50 -DCMAKE_CXX_FLAGS:STRING=${GTEST_FLAGS} 51 -Dgtest_force_shared_crt:BOOL=ON 52 ) 53 54 ExternalProject_Get_Property(googletest install_dir) 55 set(GTEST_INCLUDE_DIRS ${install_dir}/include) 56 file(MAKE_DIRECTORY ${GTEST_INCLUDE_DIRS}) 57 58 set(LIB_SUFFIX "${CMAKE_STATIC_LIBRARY_SUFFIX}") 59 set(LIB_PREFIX "${CMAKE_STATIC_LIBRARY_PREFIX}") 60 if("${GTEST_BUILD_TYPE}" STREQUAL "DEBUG") 61 set(LIB_SUFFIX "d${CMAKE_STATIC_LIBRARY_SUFFIX}") 62 endif() 63 64 # Use gmock_main instead of gtest_main because it initializes gtest as well. 65 # Note: The libraries are listed in reverse order of their dependancies. 66 foreach(LIB gtest gmock gmock_main) 67 add_library(${LIB} UNKNOWN IMPORTED) 68 set_target_properties(${LIB} PROPERTIES 69 IMPORTED_LOCATION ${install_dir}/lib/${LIB_PREFIX}${LIB}${LIB_SUFFIX} 70 INTERFACE_INCLUDE_DIRECTORIES ${GTEST_INCLUDE_DIRS} 71 INTERFACE_LINK_LIBRARIES "${GTEST_BOTH_LIBRARIES}" 72 ) 73 add_dependencies(${LIB} googletest) 74 list(APPEND GTEST_BOTH_LIBRARIES ${LIB}) 75 endforeach() 76 endmacro(build_external_gtest) 77 78 if (BENCHMARK_ENABLE_GTEST_TESTS) 79 if (IS_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/googletest) 80 set(GTEST_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/googletest") 81 set(INSTALL_GTEST OFF CACHE INTERNAL "") 82 set(INSTALL_GMOCK OFF CACHE INTERNAL "") 83 add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/googletest) 84 set(GTEST_BOTH_LIBRARIES gtest gmock gmock_main) 85 foreach(HEADER test mock) 86 # CMake 2.8 and older don't respect INTERFACE_INCLUDE_DIRECTORIES, so we 87 # have to add the paths ourselves. 88 set(HFILE g${HEADER}/g${HEADER}.h) 89 set(HPATH ${GTEST_ROOT}/google${HEADER}/include) 90 find_path(HEADER_PATH_${HEADER} ${HFILE} 91 NO_DEFAULT_PATHS 92 HINTS ${HPATH} 93 ) 94 if (NOT HEADER_PATH_${HEADER}) 95 message(FATAL_ERROR "Failed to find header ${HFILE} in ${HPATH}") 96 endif() 97 list(APPEND GTEST_INCLUDE_DIRS ${HEADER_PATH_${HEADER}}) 98 endforeach() 99 elseif(BENCHMARK_DOWNLOAD_DEPENDENCIES) 100 build_external_gtest() 101 else() 102 find_package(GTest REQUIRED) 103 find_path(GMOCK_INCLUDE_DIRS gmock/gmock.h 104 HINTS ${GTEST_INCLUDE_DIRS}) 105 if (NOT GMOCK_INCLUDE_DIRS) 106 message(FATAL_ERROR "Failed to find header gmock/gmock.h with hint ${GTEST_INCLUDE_DIRS}") 107 endif() 108 set(GTEST_INCLUDE_DIRS ${GTEST_INCLUDE_DIRS} ${GMOCK_INCLUDE_DIRS}) 109 # FIXME: We don't currently require the gmock library to build the tests, 110 # and it's likely we won't find it, so we don't try. As long as we've 111 # found the gmock/gmock.h header and gtest_main that should be good enough. 112 endif() 113 endif() 114
