| |
| cmake_minimum_required(VERSION 3.0) |
| |
| project(CompileFeatures) |
| |
| if (NOT CMAKE_C_COMPILE_FEATURES AND NOT CMAKE_CXX_COMPILE_FEATURES) |
| file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/dummy.cpp" |
| "int main(int,char**) { return 0; }\n" |
| ) |
| add_executable(CompileFeatures "${CMAKE_CURRENT_BINARY_DIR}/dummy.cpp") |
| return() |
| endif() |
| |
| macro(run_test feature lang) |
| if (";${CMAKE_${lang}_COMPILE_FEATURES};" MATCHES ${feature}) |
| add_library(test_${feature} OBJECT ${feature}) |
| set_property(TARGET test_${feature} |
| PROPERTY COMPILE_FEATURES "${feature}" |
| ) |
| else() |
| list(APPEND ${lang}_non_features ${feature}) |
| endif() |
| endmacro() |
| |
| get_property(c_features GLOBAL PROPERTY CMAKE_C_KNOWN_FEATURES) |
| foreach(feature ${c_features}) |
| run_test(${feature} C) |
| endforeach() |
| get_property(cxx_features GLOBAL PROPERTY CMAKE_CXX_KNOWN_FEATURES) |
| foreach(feature ${cxx_features}) |
| run_test(${feature} CXX) |
| endforeach() |
| |
| if (CMAKE_CXX_COMPILER_ID STREQUAL GNU |
| AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.8) |
| list(REMOVE_ITEM CXX_non_features |
| cxx_alignof |
| ) |
| endif() |
| if (CMAKE_CXX_COMPILER_ID STREQUAL GNU |
| AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.9) |
| # GNU prior to 4.9 does not set any preprocessor define to distinguish |
| # c++1y from c++11, so CMake does not support c++1y features before GNU 4.9. |
| list(REMOVE_ITEM CXX_non_features |
| # GNU 4.8 knows cxx_attributes, but doesn't know [[deprecated]] |
| # and warns that it is unknown and ignored. |
| cxx_attribute_deprecated |
| cxx_binary_literals |
| cxx_lambda_init_captures |
| cxx_return_type_deduction |
| ) |
| endif() |
| |
| set(C_ext c) |
| set(C_standard_flag 11) |
| set(CXX_ext cpp) |
| set(CXX_standard_flag 14) |
| foreach(lang CXX C) |
| if (CMAKE_${lang}_COMPILE_FEATURES) |
| foreach(feature ${${lang}_non_features}) |
| message("Testing feature : ${feature}") |
| try_compile(${feature}_works |
| "${CMAKE_CURRENT_BINARY_DIR}/${feature}_test" |
| "${CMAKE_CURRENT_SOURCE_DIR}/feature_test.${${lang}_ext}" |
| COMPILE_DEFINITIONS "-DTEST=${CMAKE_CURRENT_SOURCE_DIR}/${feature}.${${lang}_ext}" |
| CMAKE_FLAGS "-DCMAKE_${lang}_STANDARD=${${lang}_standard_flag}" |
| OUTPUT_VARIABLE OUTPUT |
| ) |
| if (${feature}_works) |
| message(SEND_ERROR |
| "Feature ${feature} expected not to work for ${lang} ${CMAKE_${lang}_COMPILER_ID}-${CMAKE_${lang}_COMPILER_VERSION}. |
| Update the supported features or blacklist it.\n${OUTPUT}") |
| else() |
| message("Testing feature : ${feature} -- Fails, as expected.") |
| endif() |
| endforeach() |
| endif() |
| endforeach() |
| |
| add_executable(CompileFeatures main.cpp) |
| set_property(TARGET CompileFeatures |
| PROPERTY COMPILE_FEATURES "cxx_auto_type" |
| ) |
| set_property(TARGET CompileFeatures |
| PROPERTY CXX_STANDARD_REQUIRED TRUE |
| ) |
| |
| add_executable(GenexCompileFeatures main.cpp) |
| set_property(TARGET GenexCompileFeatures |
| PROPERTY COMPILE_FEATURES "$<1:cxx_auto_type>;$<0:not_a_feature>" |
| ) |
| |
| add_library(iface INTERFACE) |
| set_property(TARGET iface |
| PROPERTY INTERFACE_COMPILE_FEATURES "cxx_auto_type" |
| ) |
| add_executable(IfaceCompileFeatures main.cpp) |
| target_link_libraries(IfaceCompileFeatures iface) |
| |
| add_executable(CompileFeaturesGenex genex_test.cpp) |
| set_property(TARGET CompileFeaturesGenex PROPERTY CXX_STANDARD 11) |
| target_compile_definitions(CompileFeaturesGenex PRIVATE HAVE_OVERRIDE_CONTROL=$<COMPILE_FEATURES:cxx_final,cxx_override>) |
| |
| add_executable(CompileFeaturesGenex2 genex_test.cpp) |
| target_compile_features(CompileFeaturesGenex2 PRIVATE cxx_constexpr) |
| target_compile_definitions(CompileFeaturesGenex2 PRIVATE HAVE_OVERRIDE_CONTROL=$<COMPILE_FEATURES:cxx_final,cxx_override>) |
| |
| add_library(noexcept_iface INTERFACE) |
| target_compile_features(noexcept_iface INTERFACE cxx_noexcept) |
| add_executable(CompileFeaturesGenex3 genex_test.cpp) |
| target_link_libraries(CompileFeaturesGenex3 PRIVATE noexcept_iface) |
| target_compile_definitions(CompileFeaturesGenex3 PRIVATE HAVE_OVERRIDE_CONTROL=$<COMPILE_FEATURES:cxx_final,cxx_override>) |