cmake_minimum_required (VERSION 2.8.11) project (benchmark) foreach(p CMP0054 # CMake 3.1 ) if(POLICY ${p}) cmake_policy(SET ${p} NEW) endif() endforeach() option(BENCHMARK_ENABLE_TESTING "Enable testing of the benchmark library." ON) option(BENCHMARK_ENABLE_LTO "Enable link time optimisation of the benchmark library." OFF) # Make sure we can import out CMake functions list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake") # Read the git tags to determine the project version include(GetGitVersion) get_git_version(GIT_VERSION) # Tell the user what versions we are using string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" VERSION ${GIT_VERSION}) message("-- Version: ${VERSION}") # The version of the libraries set(GENERIC_LIB_VERSION ${VERSION}) string(SUBSTRING ${VERSION} 0 1 GENERIC_LIB_SOVERSION) # Import our CMake modules include(CheckCXXCompilerFlag) include(AddCXXCompilerFlag) include(CXXFeatureCheck) if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC") # Turn compiler warnings up to 11 add_cxx_compiler_flag(-W4) add_definitions(-D_CRT_SECURE_NO_WARNINGS) # Link time optimisation if (BENCHMARK_ENABLE_LTO) set(CMAKE_CXX_FLAGS_RELEASE "/GL") set(CMAKE_STATIC_LINKER_FLAGS_RELEASE "/LTCG") set(CMAKE_SHARED_LINKER_FLAGS_RELEASE "/LTCG") set(CMAKE_EXE_LINKER_FLAGS_RELEASE "/LTCG") endif() else() # Try and enable C++11. Don't use C++14 because it doesn't work in some # configurations. add_cxx_compiler_flag(-std=c++11) if (NOT HAVE_CXX_FLAG_STD_CXX11) add_cxx_compiler_flag(-std=c++0x) endif() # Turn compiler warnings up to 11 add_cxx_compiler_flag(-Wall) add_cxx_compiler_flag(-Wextra) add_cxx_compiler_flag(-Wshadow) add_cxx_compiler_flag(-Werror RELEASE) add_cxx_compiler_flag(-pedantic) add_cxx_compiler_flag(-pedantic-errors) add_cxx_compiler_flag(-Wshorten-64-to-32) add_cxx_compiler_flag(-Wfloat-equal) add_cxx_compiler_flag(-Wzero-as-null-pointer-constant) add_cxx_compiler_flag(-fstrict-aliasing) if (HAVE_CXX_FLAG_FSTRICT_ALIASING) add_cxx_compiler_flag(-Wstrict-aliasing) endif() add_cxx_compiler_flag(-Wthread-safety) if (HAVE_WTHREAD_SAFETY) add_definitions(-DHAVE_WTHREAD_SAFETY) cxx_feature_check(THREAD_SAFETY_ATTRIBUTES) endif() # Link time optimisation if (BENCHMARK_ENABLE_LTO) add_cxx_compiler_flag(-flto) if ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU") find_program(GCC_AR gcc-ar) if (GCC_AR) set(CMAKE_AR ${GCC_AR}) endif() find_program(GCC_RANLIB gcc-ranlib) if (GCC_RANLIB) set(CMAKE_RANLIB ${GCC_RANLIB}) endif() endif() endif() # Coverage build type set(CMAKE_CXX_FLAGS_COVERAGE "${CMAKE_CXX_FLAGS_DEBUG}" CACHE STRING "Flags used by the C++ compiler during coverage builds." FORCE) set(CMAKE_EXE_LINKER_FLAGS_COVERAGE "${CMAKE_EXE_LINKER_FLAGS_DEBUG}" CACHE STRING "Flags used for linking binaries during coverage builds." FORCE) set(CMAKE_SHARED_LINKER_FLAGS_COVERAGE "${CMAKE_SHARED_LINKER_FLAGS_DEBUG}" CACHE STRING "Flags used by the shared libraries linker during coverage builds." FORCE) mark_as_advanced( CMAKE_CXX_FLAGS_COVERAGE CMAKE_EXE_LINKER_FLAGS_COVERAGE CMAKE_SHARED_LINKER_FLAGS_COVERAGE) set(CMAKE_BUILD_TYPE "${CMAKE_BUILD_TYPE}" CACHE STRING "Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel Coverage." FORCE) add_cxx_compiler_flag(--coverage COVERAGE) endif() # C++ feature checks cxx_feature_check(STD_REGEX) cxx_feature_check(GNU_POSIX_REGEX) cxx_feature_check(POSIX_REGEX) cxx_feature_check(STEADY_CLOCK) # Ensure we have pthreads find_package(Threads REQUIRED) # Set up directories include_directories(${PROJECT_SOURCE_DIR}/include) # Build the targets add_subdirectory(src) if (BENCHMARK_ENABLE_TESTING) enable_testing() add_subdirectory(test) endif()