include(CheckCXXCompilerFlag) ################################################### # Activate C++14 # # Uses: target_activate_cpp14(buildtarget) ################################################### function(target_activate_cpp14 TARGET) if(MSVC) # Required by range-v3, see its README.md set_property(TARGET ${TARGET} PROPERTY CXX_STANDARD 17) else() set_property(TARGET ${TARGET} PROPERTY CXX_STANDARD 14) endif() set_property(TARGET ${TARGET} PROPERTY CXX_STANDARD_REQUIRED ON) # Ideally, we'd like to use libc++ on linux as well, but: # - http://stackoverflow.com/questions/37096062/get-a-basic-c-program-to-compile-using-clang-on-ubuntu-16 # - https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=808086 # so only use it on Apple systems... if(CMAKE_CXX_COMPILER_ID MATCHES "Clang" AND APPLE) target_compile_options(${TARGET} PUBLIC -stdlib=libc++) endif(CMAKE_CXX_COMPILER_ID MATCHES "Clang" AND APPLE) endfunction(target_activate_cpp14) # Find clang-tidy executable (for use in target_enable_style_warnings) if (USE_CLANG_TIDY) find_program( CLANG_TIDY_EXE NAMES "clang-tidy" DOC "Path to clang-tidy executable" ) if(NOT CLANG_TIDY_EXE) message(FATAL_ERROR "clang-tidy not found. Please install clang-tidy or run without -DUSE_CLANG_TIDY=on.") else() set(CLANG_TIDY_OPTIONS "-system-headers=0") if (CLANG_TIDY_WARNINGS_AS_ERRORS) set(CLANG_TIDY_OPTIONS "${CLANG_TIDY_OPTIONS}" "-warnings-as-errors=*") endif() message(STATUS "Clang-tidy is enabled. Executable: ${CLANG_TIDY_EXE} Arguments: ${CLANG_TIDY_OPTIONS}") set(CLANG_TIDY_CLI "${CLANG_TIDY_EXE}" "${CLANG_TIDY_OPTIONS}") endif() endif() # Find iwyu (for use in target_enable_style_warnings) if (USE_IWYU) find_program( IWYU_EXE NAMES include-what-you-use iwyu ) if(NOT IWYU_EXE) message(FATAL_ERROR "include-what-you-use not found. Please install iwyu or run without -DUSE_IWYU=on.") else() message(STATUS "iwyu found: ${IWYU_EXE}") set(DO_IWYU "${IWYU_EXE}") endif() endif() ################################################# # Enable style compiler warnings # # Uses: target_enable_style_warnings(buildtarget) ################################################# function(target_enable_style_warnings TARGET) if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC") # TODO elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "AppleClang") target_compile_options(${TARGET} PRIVATE -Wall -Wextra -Wold-style-cast -Wcast-align -Wno-unused-command-line-argument) # TODO consider -Wpedantic -Wchkp -Wcast-qual -Wctor-dtor-privacy -Wdisabled-optimization -Wformat=2 -Winit-self -Wlogical-op -Wmissing-include-dirs -Wnoexcept -Wold-style-cast -Woverloaded-virtual -Wredundant-decls -Wshadow -Wsign-promo -Wstrict-null-sentinel -Wstrict-overflow=5 -Wundef -Wno-unused -Wno-variadic-macros -Wno-parentheses -fdiagnostics-show-option -Wconversion and others? elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU") target_compile_options(${TARGET} PRIVATE -Wall -Wextra -Wold-style-cast -Wcast-align -Wno-maybe-uninitialized) # TODO consider -Wpedantic -Wchkp -Wcast-qual -Wctor-dtor-privacy -Wdisabled-optimization -Wformat=2 -Winit-self -Wlogical-op -Wmissing-include-dirs -Wnoexcept -Wold-style-cast -Woverloaded-virtual -Wredundant-decls -Wshadow -Wsign-promo -Wstrict-null-sentinel -Wstrict-overflow=5 -Wundef -Wno-unused -Wno-variadic-macros -Wno-parentheses -fdiagnostics-show-option -Wconversion and others? endif() if (USE_WERROR) message(STATUS Building ${TARGET} with -Werror) target_compile_options(${TARGET} PRIVATE -Werror) endif() # Enable clang-tidy if(USE_CLANG_TIDY) set_target_properties( ${TARGET} PROPERTIES CXX_CLANG_TIDY "${CLANG_TIDY_CLI}" ) endif() if(USE_IWYU) set_target_properties( ${TARGET} PROPERTIES CXX_INCLUDE_WHAT_YOU_USE "${DO_IWYU}" ) endif() endfunction(target_enable_style_warnings) ################################################## # Add boost to the project # # Uses: # target_add_boost(buildtarget) ################################################## function(target_add_boost TARGET) target_compile_definitions(${TARGET} PUBLIC BOOST_THREAD_VERSION=4) endfunction(target_add_boost) ################################################## # Specify that a specific minimal version of gcc is required # # Uses: # require_gcc_version(4.9) ################################################## function(require_gcc_version VERSION) if (CMAKE_COMPILER_IS_GNUCXX) execute_process(COMMAND ${CMAKE_CXX_COMPILER} -dumpversion OUTPUT_VARIABLE GCC_VERSION) if (GCC_VERSION VERSION_LESS ${VERSION}) message(FATAL_ERROR "Needs at least gcc version ${VERSION}, found gcc ${GCC_VERSION}") endif (GCC_VERSION VERSION_LESS ${VERSION}) endif (CMAKE_COMPILER_IS_GNUCXX) endfunction(require_gcc_version) ################################################## # Specify that a specific minimal version of clang is required # # Uses: # require_clang_version(3.5) ################################################## function(require_clang_version VERSION) if (CMAKE_CXX_COMPILER_ID MATCHES "Clang") if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS ${VERSION}) message(FATAL_ERROR "Needs at least clang version ${VERSION}, found clang ${CMAKE_CXX_COMPILER_VERSION}") endif (CMAKE_CXX_COMPILER_VERSION VERSION_LESS ${VERSION}) endif(CMAKE_CXX_COMPILER_ID MATCHES "Clang") endfunction(require_clang_version) include(cmake-utils/TargetArch.cmake) function(get_target_architecture output_var) target_architecture(local_output_var) set(${output_var} ${local_output_var} PARENT_SCOPE) endfunction()