macro(_record_compiler_features lang compile_flags feature_list) | |
include("${CMAKE_ROOT}/Modules/Compiler/${CMAKE_${lang}_COMPILER_ID}-${lang}-FeatureTests.cmake" OPTIONAL) | |
string(TOLOWER ${lang} lang_lc) | |
file(REMOVE "${CMAKE_BINARY_DIR}/CMakeFiles/feature_tests.bin") | |
file(WRITE "${CMAKE_BINARY_DIR}/CMakeFiles/feature_tests.${lang_lc}" " | |
const char features[] = {\"\\n\"\n") | |
get_property(known_features GLOBAL PROPERTY CMAKE_${lang}_KNOWN_FEATURES) | |
foreach(feature ${known_features}) | |
if (_cmake_feature_test_${feature}) | |
if (${_cmake_feature_test_${feature}} STREQUAL 1) | |
set(_feature_condition "\"1\" ") | |
else() | |
set(_feature_condition "#if ${_cmake_feature_test_${feature}}\n\"1\"\n#else\n\"0\"\n#endif\n") | |
endif() | |
file(APPEND "${CMAKE_BINARY_DIR}/CMakeFiles/feature_tests.${lang_lc}" "\"${lang}_FEATURE:\"\n${_feature_condition}\"${feature}\\n\"\n") | |
endif() | |
endforeach() | |
file(APPEND "${CMAKE_BINARY_DIR}/CMakeFiles/feature_tests.${lang_lc}" | |
"\n};\n\nint main(int argc, char** argv) { (void)argv; return features[argc]; }\n") | |
if(CMAKE_${lang}_LINK_WITH_STANDARD_COMPILE_OPTION) | |
# This toolchain requires use of the language standard flag | |
# when linking in order to use the matching standard library. | |
set(compile_flags_for_link "${compile_flags}") | |
else() | |
set(compile_flags_for_link "") | |
endif() | |
try_compile(CMAKE_${lang}_FEATURE_TEST | |
${CMAKE_BINARY_DIR} "${CMAKE_BINARY_DIR}/CMakeFiles/feature_tests.${lang_lc}" | |
COMPILE_DEFINITIONS "${compile_flags}" | |
LINK_LIBRARIES "${compile_flags_for_link}" | |
OUTPUT_VARIABLE _output | |
COPY_FILE "${CMAKE_BINARY_DIR}/CMakeFiles/feature_tests.bin" | |
COPY_FILE_ERROR _copy_error | |
) | |
if(CMAKE_${lang}_FEATURE_TEST AND NOT _copy_error) | |
set(_result 0) | |
else() | |
set(_result 255) | |
endif() | |
unset(CMAKE_${lang}_FEATURE_TEST CACHE) | |
unset(compile_flags_for_link) | |
if (_result EQUAL 0) | |
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log | |
"\n\nDetecting ${lang} [${compile_flags}] compiler features compiled with the following output:\n${_output}\n\n") | |
if(EXISTS "${CMAKE_BINARY_DIR}/CMakeFiles/feature_tests.bin") | |
file(STRINGS "${CMAKE_BINARY_DIR}/CMakeFiles/feature_tests.bin" | |
features REGEX "${lang}_FEATURE:.*") | |
foreach(info ${features}) | |
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log | |
" Feature record: ${info}\n") | |
string(REPLACE "${lang}_FEATURE:" "" info ${info}) | |
string(SUBSTRING ${info} 0 1 has_feature) | |
if(has_feature) | |
string(REGEX REPLACE "^1" "" feature ${info}) | |
list(APPEND ${feature_list} ${feature}) | |
endif() | |
endforeach() | |
endif() | |
else() | |
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log | |
"Detecting ${lang} [${compile_flags}] compiler features failed to compile with the following output:\n${_output}\n${_copy_error}\n\n") | |
endif() | |
endmacro() | |
macro(_record_compiler_features_c std) | |
list(APPEND CMAKE_C${std}_COMPILE_FEATURES c_std_${std}) | |
get_property(lang_level_has_features GLOBAL PROPERTY CMAKE_C${std}_KNOWN_FEATURES) | |
if(lang_level_has_features) | |
_record_compiler_features(C "${CMAKE_C${std}_STANDARD_COMPILE_OPTION}" CMAKE_C${std}_COMPILE_FEATURES) | |
endif() | |
unset(lang_level_has_features) | |
endmacro() | |
macro(_record_compiler_features_cxx std) | |
list(APPEND CMAKE_CXX${std}_COMPILE_FEATURES cxx_std_${std}) | |
get_property(lang_level_has_features GLOBAL PROPERTY CMAKE_CXX${std}_KNOWN_FEATURES) | |
if(lang_level_has_features) | |
_record_compiler_features(CXX "${CMAKE_CXX${std}_STANDARD_COMPILE_OPTION}" CMAKE_CXX${std}_COMPILE_FEATURES) | |
endif() | |
unset(lang_level_has_features) | |
endmacro() | |
macro(_record_compiler_features_cuda std) | |
list(APPEND CMAKE_CUDA${std}_COMPILE_FEATURES cuda_std_${std}) | |
get_property(lang_level_has_features GLOBAL PROPERTY CMAKE_CUDA${std}_KNOWN_FEATURES) | |
if(lang_level_has_features) | |
_record_compiler_features(CUDA "${CMAKE_CUDA${std}_STANDARD_COMPILE_OPTION}" CMAKE_CUDA${std}_COMPILE_FEATURES) | |
endif() | |
unset(lang_level_has_features) | |
endmacro() | |
macro(_record_compiler_features_hip std) | |
list(APPEND CMAKE_HIP${std}_COMPILE_FEATURES hip_std_${std}) | |
get_property(lang_level_has_features GLOBAL PROPERTY CMAKE_HIP${std}_KNOWN_FEATURES) | |
if(lang_level_has_features) | |
_record_compiler_features(HIP "${CMAKE_HIP${std}_STANDARD_COMPILE_OPTION}" CMAKE_HIP${std}_COMPILE_FEATURES) | |
endif() | |
unset(lang_level_has_features) | |
endmacro() | |
macro(_has_compiler_features lang level compile_flags feature_list) | |
# presume all known features are supported | |
get_property(known_features GLOBAL PROPERTY CMAKE_${lang}${level}_KNOWN_FEATURES) | |
list(APPEND ${feature_list} ${known_features}) | |
endmacro() | |
macro(_has_compiler_features_c std) | |
list(APPEND CMAKE_C${std}_COMPILE_FEATURES c_std_${std}) | |
_has_compiler_features(C ${std} "${CMAKE_C${std}_STANDARD_COMPILE_OPTION}" CMAKE_C${std}_COMPILE_FEATURES) | |
endmacro() | |
macro(_has_compiler_features_cxx std) | |
list(APPEND CMAKE_CXX${std}_COMPILE_FEATURES cxx_std_${std}) | |
_has_compiler_features(CXX ${std} "${CMAKE_CXX${std}_STANDARD_COMPILE_OPTION}" CMAKE_CXX${std}_COMPILE_FEATURES) | |
endmacro() | |
macro(_has_compiler_features_cuda std) | |
list(APPEND CMAKE_CUDA${std}_COMPILE_FEATURES cuda_std_${std}) | |
_has_compiler_features(CUDA ${std} "${CMAKE_CUDA${std}_STANDARD_COMPILE_OPTION}" CMAKE_CUDA${std}_COMPILE_FEATURES) | |
endmacro() | |
macro(_has_compiler_features_hip std) | |
list(APPEND CMAKE_HIP${std}_COMPILE_FEATURES hip_std_${std}) | |
_has_compiler_features(HIP ${std} "${CMAKE_HIP${std}_STANDARD_COMPILE_OPTION}" CMAKE_HIP${std}_COMPILE_FEATURES) | |
endmacro() |