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cmake_minimum_required(VERSION 3.0)
project(CompileFeatures)
if (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(cxx_features GLOBAL PROPERTY CMAKE_CXX_KNOWN_FEATURES)
foreach(feature ${cxx_features})
run_test(${feature} CXX)
endforeach()
if (CMAKE_CXX_COMPILE_FEATURES)
include(CheckCXXSourceCompiles)
foreach(feature ${CXX_non_features})
check_cxx_source_compiles("#include \"${CMAKE_CURRENT_SOURCE_DIR}/${feature}.cpp\"\nint main() { return 0; }\n" ${feature}_works)
if (${feature}_works)
message(SEND_ERROR
"Feature ${feature} expected not to work for ${CMAKE_CXX_COMPILER_ID}-${CMAKE_CXX_COMPILER_VERSION}. Update the supported features or blacklist it.")
endif()
endforeach()
endif()
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)
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