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286 lines
11 KiB
286 lines
11 KiB
cmake_minimum_required (VERSION 3.5.1) |
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foreach(p |
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CMP0048 # OK to clear PROJECT_VERSION on project() |
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CMP0054 # CMake 3.1 |
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CMP0056 # export EXE_LINKER_FLAGS to try_run |
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CMP0057 # Support no if() IN_LIST operator |
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CMP0063 # Honor visibility properties for all targets |
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CMP0077 # Allow option() overrides in importing projects |
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) |
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if(POLICY ${p}) |
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cmake_policy(SET ${p} NEW) |
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endif() |
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endforeach() |
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project (benchmark CXX) |
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option(BENCHMARK_ENABLE_TESTING "Enable testing of the benchmark library." ON) |
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option(BENCHMARK_ENABLE_EXCEPTIONS "Enable the use of exceptions in the benchmark library." ON) |
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option(BENCHMARK_ENABLE_LTO "Enable link time optimisation of the benchmark library." OFF) |
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option(BENCHMARK_USE_LIBCXX "Build and test using libc++ as the standard library." OFF) |
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if(NOT MSVC) |
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option(BENCHMARK_BUILD_32_BITS "Build a 32 bit version of the library." OFF) |
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else() |
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set(BENCHMARK_BUILD_32_BITS OFF CACHE BOOL "Build a 32 bit version of the library - unsupported when using MSVC)" FORCE) |
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endif() |
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option(BENCHMARK_ENABLE_INSTALL "Enable installation of benchmark. (Projects embedding benchmark may want to turn this OFF.)" ON) |
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# Allow unmet dependencies to be met using CMake's ExternalProject mechanics, which |
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# may require downloading the source code. |
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option(BENCHMARK_DOWNLOAD_DEPENDENCIES "Allow the downloading and in-tree building of unmet dependencies" OFF) |
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# This option can be used to disable building and running unit tests which depend on gtest |
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# in cases where it is not possible to build or find a valid version of gtest. |
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option(BENCHMARK_ENABLE_GTEST_TESTS "Enable building the unit tests which depend on gtest" ON) |
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set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON) |
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set(ENABLE_ASSEMBLY_TESTS_DEFAULT OFF) |
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function(should_enable_assembly_tests) |
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if(CMAKE_BUILD_TYPE) |
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string(TOLOWER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE_LOWER) |
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if (${CMAKE_BUILD_TYPE_LOWER} MATCHES "coverage") |
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# FIXME: The --coverage flag needs to be removed when building assembly |
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# tests for this to work. |
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return() |
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endif() |
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endif() |
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if (MSVC) |
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return() |
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elseif(NOT CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64") |
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return() |
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elseif(NOT CMAKE_SIZEOF_VOID_P EQUAL 8) |
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# FIXME: Make these work on 32 bit builds |
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return() |
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elseif(BENCHMARK_BUILD_32_BITS) |
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# FIXME: Make these work on 32 bit builds |
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return() |
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endif() |
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find_program(LLVM_FILECHECK_EXE FileCheck) |
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if (LLVM_FILECHECK_EXE) |
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set(LLVM_FILECHECK_EXE "${LLVM_FILECHECK_EXE}" CACHE PATH "llvm filecheck" FORCE) |
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message(STATUS "LLVM FileCheck Found: ${LLVM_FILECHECK_EXE}") |
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else() |
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message(STATUS "Failed to find LLVM FileCheck") |
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return() |
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endif() |
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set(ENABLE_ASSEMBLY_TESTS_DEFAULT ON PARENT_SCOPE) |
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endfunction() |
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should_enable_assembly_tests() |
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# This option disables the building and running of the assembly verification tests |
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option(BENCHMARK_ENABLE_ASSEMBLY_TESTS "Enable building and running the assembly tests" |
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${ENABLE_ASSEMBLY_TESTS_DEFAULT}) |
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# Make sure we can import out CMake functions |
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list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules") |
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list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake") |
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# Read the git tags to determine the project version |
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include(GetGitVersion) |
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get_git_version(GIT_VERSION) |
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# Tell the user what versions we are using |
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string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" VERSION ${GIT_VERSION}) |
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message(STATUS "Version: ${VERSION}") |
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# The version of the libraries |
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set(GENERIC_LIB_VERSION ${VERSION}) |
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string(SUBSTRING ${VERSION} 0 1 GENERIC_LIB_SOVERSION) |
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# Import our CMake modules |
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include(CheckCXXCompilerFlag) |
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include(AddCXXCompilerFlag) |
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include(CXXFeatureCheck) |
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if (BENCHMARK_BUILD_32_BITS) |
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add_required_cxx_compiler_flag(-m32) |
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endif() |
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if (MSVC) |
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# Turn compiler warnings up to 11 |
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string(REGEX REPLACE "[-/]W[1-4]" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") |
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4") |
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add_definitions(-D_CRT_SECURE_NO_WARNINGS) |
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if (NOT BENCHMARK_ENABLE_EXCEPTIONS) |
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add_cxx_compiler_flag(-EHs-) |
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add_cxx_compiler_flag(-EHa-) |
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add_definitions(-D_HAS_EXCEPTIONS=0) |
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endif() |
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# Link time optimisation |
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if (BENCHMARK_ENABLE_LTO) |
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set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /GL") |
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set(CMAKE_STATIC_LINKER_FLAGS_RELEASE "${CMAKE_STATIC_LINKER_FLAGS_RELEASE} /LTCG") |
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set(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE} /LTCG") |
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set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /LTCG") |
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set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} /GL") |
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string(REGEX REPLACE "[-/]INCREMENTAL" "/INCREMENTAL:NO" CMAKE_STATIC_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_STATIC_LINKER_FLAGS_RELWITHDEBINFO}") |
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set(CMAKE_STATIC_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_STATIC_LINKER_FLAGS_RELWITHDEBINFO} /LTCG") |
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string(REGEX REPLACE "[-/]INCREMENTAL" "/INCREMENTAL:NO" CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO}") |
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set(CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO} /LTCG") |
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string(REGEX REPLACE "[-/]INCREMENTAL" "/INCREMENTAL:NO" CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO}") |
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set(CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO} /LTCG") |
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set(CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} /GL") |
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set(CMAKE_STATIC_LINKER_FLAGS_MINSIZEREL "${CMAKE_STATIC_LINKER_FLAGS_MINSIZEREL} /LTCG") |
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set(CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL "${CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL} /LTCG") |
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set(CMAKE_EXE_LINKER_FLAGS_MINSIZEREL "${CMAKE_EXE_LINKER_FLAGS_MINSIZEREL} /LTCG") |
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endif() |
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else() |
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# Try and enable C++11. Don't use C++14 because it doesn't work in some |
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# configurations. |
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add_cxx_compiler_flag(-std=c++11) |
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if (NOT HAVE_CXX_FLAG_STD_CXX11) |
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add_cxx_compiler_flag(-std=c++0x) |
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endif() |
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# Turn compiler warnings up to 11 |
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add_cxx_compiler_flag(-Wall) |
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add_cxx_compiler_flag(-Wextra) |
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add_cxx_compiler_flag(-Wshadow) |
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add_cxx_compiler_flag(-Werror RELEASE) |
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add_cxx_compiler_flag(-Werror RELWITHDEBINFO) |
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add_cxx_compiler_flag(-Werror MINSIZEREL) |
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# Disabled until googletest (gmock) stops emitting variadic macro warnings |
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#add_cxx_compiler_flag(-pedantic) |
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#add_cxx_compiler_flag(-pedantic-errors) |
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add_cxx_compiler_flag(-Wshorten-64-to-32) |
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add_cxx_compiler_flag(-fstrict-aliasing) |
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# Disable warnings regarding deprecated parts of the library while building |
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# and testing those parts of the library. |
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add_cxx_compiler_flag(-Wno-deprecated-declarations) |
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if (CMAKE_CXX_COMPILER_ID STREQUAL "Intel") |
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# Intel silently ignores '-Wno-deprecated-declarations', |
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# warning no. 1786 must be explicitly disabled. |
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# See #631 for rationale. |
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add_cxx_compiler_flag(-wd1786) |
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endif() |
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# Disable deprecation warnings for release builds (when -Werror is enabled). |
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add_cxx_compiler_flag(-Wno-deprecated RELEASE) |
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add_cxx_compiler_flag(-Wno-deprecated RELWITHDEBINFO) |
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add_cxx_compiler_flag(-Wno-deprecated MINSIZEREL) |
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if (NOT BENCHMARK_ENABLE_EXCEPTIONS) |
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add_cxx_compiler_flag(-fno-exceptions) |
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endif() |
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if (HAVE_CXX_FLAG_FSTRICT_ALIASING) |
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if (NOT CMAKE_CXX_COMPILER_ID STREQUAL "Intel") #ICC17u2: Many false positives for Wstrict-aliasing |
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add_cxx_compiler_flag(-Wstrict-aliasing) |
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endif() |
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endif() |
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# ICC17u2: overloaded virtual function "benchmark::Fixture::SetUp" is only partially overridden |
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# (because of deprecated overload) |
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add_cxx_compiler_flag(-wd654) |
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add_cxx_compiler_flag(-Wthread-safety) |
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if (HAVE_CXX_FLAG_WTHREAD_SAFETY) |
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cxx_feature_check(THREAD_SAFETY_ATTRIBUTES) |
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endif() |
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# On most UNIX like platforms g++ and clang++ define _GNU_SOURCE as a |
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# predefined macro, which turns on all of the wonderful libc extensions. |
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# However g++ doesn't do this in Cygwin so we have to define it ourselfs |
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# since we depend on GNU/POSIX/BSD extensions. |
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if (CYGWIN) |
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add_definitions(-D_GNU_SOURCE=1) |
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endif() |
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if (QNXNTO) |
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add_definitions(-D_QNX_SOURCE) |
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endif() |
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# Link time optimisation |
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if (BENCHMARK_ENABLE_LTO) |
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add_cxx_compiler_flag(-flto) |
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if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU") |
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find_program(GCC_AR gcc-ar) |
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if (GCC_AR) |
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set(CMAKE_AR ${GCC_AR}) |
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endif() |
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find_program(GCC_RANLIB gcc-ranlib) |
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if (GCC_RANLIB) |
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set(CMAKE_RANLIB ${GCC_RANLIB}) |
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endif() |
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elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang") |
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include(llvm-toolchain) |
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endif() |
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endif() |
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# Coverage build type |
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set(BENCHMARK_CXX_FLAGS_COVERAGE "${CMAKE_CXX_FLAGS_DEBUG}" |
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CACHE STRING "Flags used by the C++ compiler during coverage builds." |
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FORCE) |
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set(BENCHMARK_EXE_LINKER_FLAGS_COVERAGE "${CMAKE_EXE_LINKER_FLAGS_DEBUG}" |
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CACHE STRING "Flags used for linking binaries during coverage builds." |
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FORCE) |
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set(BENCHMARK_SHARED_LINKER_FLAGS_COVERAGE "${CMAKE_SHARED_LINKER_FLAGS_DEBUG}" |
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CACHE STRING "Flags used by the shared libraries linker during coverage builds." |
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FORCE) |
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mark_as_advanced( |
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BENCHMARK_CXX_FLAGS_COVERAGE |
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BENCHMARK_EXE_LINKER_FLAGS_COVERAGE |
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BENCHMARK_SHARED_LINKER_FLAGS_COVERAGE) |
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set(CMAKE_BUILD_TYPE "${CMAKE_BUILD_TYPE}" CACHE STRING |
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"Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel Coverage.") |
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add_cxx_compiler_flag(--coverage COVERAGE) |
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endif() |
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if (BENCHMARK_USE_LIBCXX) |
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if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang") |
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add_cxx_compiler_flag(-stdlib=libc++) |
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elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR |
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"${CMAKE_CXX_COMPILER_ID}" STREQUAL "Intel") |
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add_cxx_compiler_flag(-nostdinc++) |
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message(WARNING "libc++ header path must be manually specified using CMAKE_CXX_FLAGS") |
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# Adding -nodefaultlibs directly to CMAKE_<TYPE>_LINKER_FLAGS will break |
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# configuration checks such as 'find_package(Threads)' |
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list(APPEND BENCHMARK_CXX_LINKER_FLAGS -nodefaultlibs) |
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# -lc++ cannot be added directly to CMAKE_<TYPE>_LINKER_FLAGS because |
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# linker flags appear before all linker inputs and -lc++ must appear after. |
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list(APPEND BENCHMARK_CXX_LIBRARIES c++) |
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else() |
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message(FATAL_ERROR "-DBENCHMARK_USE_LIBCXX:BOOL=ON is not supported for compiler") |
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endif() |
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endif(BENCHMARK_USE_LIBCXX) |
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set(EXTRA_CXX_FLAGS "") |
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if (WIN32 AND "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang") |
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# Clang on Windows fails to compile the regex feature check under C++11 |
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set(EXTRA_CXX_FLAGS "-DCMAKE_CXX_STANDARD=14") |
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endif() |
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# C++ feature checks |
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# Determine the correct regular expression engine to use |
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cxx_feature_check(STD_REGEX ${EXTRA_CXX_FLAGS}) |
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cxx_feature_check(GNU_POSIX_REGEX ${EXTRA_CXX_FLAGS}) |
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cxx_feature_check(POSIX_REGEX ${EXTRA_CXX_FLAGS}) |
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if(NOT HAVE_STD_REGEX AND NOT HAVE_GNU_POSIX_REGEX AND NOT HAVE_POSIX_REGEX) |
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message(FATAL_ERROR "Failed to determine the source files for the regular expression backend") |
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endif() |
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if (NOT BENCHMARK_ENABLE_EXCEPTIONS AND HAVE_STD_REGEX |
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AND NOT HAVE_GNU_POSIX_REGEX AND NOT HAVE_POSIX_REGEX) |
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message(WARNING "Using std::regex with exceptions disabled is not fully supported") |
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endif() |
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cxx_feature_check(STEADY_CLOCK) |
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# Ensure we have pthreads |
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set(THREADS_PREFER_PTHREAD_FLAG ON) |
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find_package(Threads REQUIRED) |
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# Set up directories |
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include_directories(${PROJECT_SOURCE_DIR}/include) |
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# Build the targets |
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add_subdirectory(src) |
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if (BENCHMARK_ENABLE_TESTING) |
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enable_testing() |
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if (BENCHMARK_ENABLE_GTEST_TESTS AND |
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NOT (TARGET gtest AND TARGET gtest_main AND |
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TARGET gmock AND TARGET gmock_main)) |
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include(GoogleTest) |
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endif() |
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add_subdirectory(test) |
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endif()
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