# Distributed under the OSI-approved BSD 3-Clause License. See accompanying # file Copyright.txt or https://cmake.org/licensing for details. function(cmake_determine_compile_features lang) if(lang STREQUAL C AND COMMAND cmake_record_c_compile_features) message(STATUS "Detecting ${lang} compile features") set(CMAKE_C90_COMPILE_FEATURES) set(CMAKE_C99_COMPILE_FEATURES) set(CMAKE_C11_COMPILE_FEATURES) include("${CMAKE_ROOT}/Modules/Internal/FeatureTesting.cmake") cmake_record_c_compile_features() if(NOT _result EQUAL 0) message(STATUS "Detecting ${lang} compile features - failed") return() endif() if (CMAKE_C99_COMPILE_FEATURES AND CMAKE_C11_COMPILE_FEATURES) list(REMOVE_ITEM CMAKE_C11_COMPILE_FEATURES ${CMAKE_C99_COMPILE_FEATURES}) endif() if (CMAKE_C90_COMPILE_FEATURES AND CMAKE_C99_COMPILE_FEATURES) list(REMOVE_ITEM CMAKE_C99_COMPILE_FEATURES ${CMAKE_C90_COMPILE_FEATURES}) endif() if(NOT CMAKE_C_COMPILE_FEATURES) set(CMAKE_C_COMPILE_FEATURES ${CMAKE_C90_COMPILE_FEATURES} ${CMAKE_C99_COMPILE_FEATURES} ${CMAKE_C11_COMPILE_FEATURES} ) endif() set(CMAKE_C_COMPILE_FEATURES ${CMAKE_C_COMPILE_FEATURES} PARENT_SCOPE) set(CMAKE_C90_COMPILE_FEATURES ${CMAKE_C90_COMPILE_FEATURES} PARENT_SCOPE) set(CMAKE_C99_COMPILE_FEATURES ${CMAKE_C99_COMPILE_FEATURES} PARENT_SCOPE) set(CMAKE_C11_COMPILE_FEATURES ${CMAKE_C11_COMPILE_FEATURES} PARENT_SCOPE) message(STATUS "Detecting ${lang} compile features - done") elseif(lang STREQUAL CXX AND COMMAND cmake_record_cxx_compile_features) message(STATUS "Detecting ${lang} compile features") set(CMAKE_CXX98_COMPILE_FEATURES) set(CMAKE_CXX11_COMPILE_FEATURES) set(CMAKE_CXX14_COMPILE_FEATURES) set(CMAKE_CXX17_COMPILE_FEATURES) include("${CMAKE_ROOT}/Modules/Internal/FeatureTesting.cmake") cmake_record_cxx_compile_features() if(NOT _result EQUAL 0) message(STATUS "Detecting ${lang} compile features - failed") return() endif() if (CMAKE_CXX14_COMPILE_FEATURES AND CMAKE_CXX17_COMPILE_FEATURES) list(REMOVE_ITEM CMAKE_CXX17_COMPILE_FEATURES ${CMAKE_CXX14_COMPILE_FEATURES}) endif() if (CMAKE_CXX11_COMPILE_FEATURES AND CMAKE_CXX14_COMPILE_FEATURES) list(REMOVE_ITEM CMAKE_CXX14_COMPILE_FEATURES ${CMAKE_CXX11_COMPILE_FEATURES}) endif() if (CMAKE_CXX98_COMPILE_FEATURES AND CMAKE_CXX11_COMPILE_FEATURES) list(REMOVE_ITEM CMAKE_CXX11_COMPILE_FEATURES ${CMAKE_CXX98_COMPILE_FEATURES}) endif() if(NOT CMAKE_CXX_COMPILE_FEATURES) set(CMAKE_CXX_COMPILE_FEATURES ${CMAKE_CXX98_COMPILE_FEATURES} ${CMAKE_CXX11_COMPILE_FEATURES} ${CMAKE_CXX14_COMPILE_FEATURES} ${CMAKE_CXX17_COMPILE_FEATURES} ) endif() set(CMAKE_CXX_COMPILE_FEATURES ${CMAKE_CXX_COMPILE_FEATURES} PARENT_SCOPE) set(CMAKE_CXX98_COMPILE_FEATURES ${CMAKE_CXX98_COMPILE_FEATURES} PARENT_SCOPE) set(CMAKE_CXX11_COMPILE_FEATURES ${CMAKE_CXX11_COMPILE_FEATURES} PARENT_SCOPE) set(CMAKE_CXX14_COMPILE_FEATURES ${CMAKE_CXX14_COMPILE_FEATURES} PARENT_SCOPE) set(CMAKE_CXX17_COMPILE_FEATURES ${CMAKE_CXX17_COMPILE_FEATURES} PARENT_SCOPE) message(STATUS "Detecting ${lang} compile features - done") endif() endfunction()