You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

432 lines
15 KiB

cmake_minimum_required(VERSION 3.10)
cmake_policy(SET CMP0057 NEW)
project(CompileFeatures)
set(ext_C c)
set(ext_CXX cpp)
set(std_C 90 99 11 17 23)
set(std_CXX 98 11 14 17 20 23 26)
if(CMake_TEST_CUDA)
enable_language(CUDA)
set(ext_CUDA cu)
set(std_CUDA 03 11 14 17 20 23 26)
endif()
if(CMake_TEST_HIP)
enable_language(HIP)
set(ext_HIP hip)
set(std_HIP 98 11 14 17 20 23 26)
endif()
foreach(lang C CXX CUDA HIP)
foreach(std IN LISTS std_${lang})
string(TOLOWER "${lang}_std_${std}" feature)
if("${std}" IN_LIST CMake_TEST_${lang}_STANDARDS
OR CMAKE_${lang}${std}_STANDARD_COMPILE_OPTION)
add_library(test_${feature} OBJECT ${feature}.${ext_${lang}})
target_compile_features(test_${feature} PRIVATE ${feature})
endif()
endforeach()
endforeach()
macro(run_test feature lang)
if (${feature} IN_LIST CMAKE_${lang}_COMPILE_FEATURES)
add_library(test_${feature} OBJECT ${feature}.${ext_${lang}})
set_property(TARGET test_${feature}
PROPERTY COMPILE_FEATURES "${feature}"
)
else()
list(APPEND ${lang}_non_features ${feature})
endif()
endmacro()
if(NOT CMAKE_C_COMPILER_ID MATCHES "^(Cray|PGI|NVHPC|XL|XLClang|IBMClang|IntelLLVM|Fujitsu|FujitsuClang|OrangeC)$")
get_property(c_features GLOBAL PROPERTY CMAKE_C_KNOWN_FEATURES)
list(FILTER c_features EXCLUDE REGEX "^c_std_[0-9][0-9]")
foreach(feature ${c_features})
run_test(${feature} C)
endforeach()
endif()
if(NOT CMAKE_CXX_COMPILER_ID MATCHES "^(Cray|PGI|NVHPC|XL|XLClang|IBMClang|IntelLLVM|Fujitsu|FujitsuClang|OrangeC)$")
get_property(cxx_features GLOBAL PROPERTY CMAKE_CXX_KNOWN_FEATURES)
list(FILTER cxx_features EXCLUDE REGEX "^cxx_std_[0-9][0-9]")
foreach(feature ${cxx_features})
run_test(${feature} CXX)
endforeach()
endif()
if (CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang"
AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.1)
# AppleClang prior to 5.1 does not set any preprocessor define to distinguish
# c++1y from c++11, so CMake does not support c++1y features before AppleClang 5.1.
list(REMOVE_ITEM CXX_non_features
cxx_attribute_deprecated
cxx_binary_literals
)
endif()
if (CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang"
AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.2)
# AppleClang prior to 4.1 reports false for __has_feature(cxx_local_type_template_args)
# and __has_feature(cxx_unrestricted_unions) but it happens to pass these tests.
list(REMOVE_ITEM CXX_non_features
cxx_local_type_template_args
cxx_unrestricted_unions
)
endif()
if (CMAKE_CXX_COMPILER_ID STREQUAL SunPro)
if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.15)
# SunPro 5.14 accepts -std=c++14 and compiles two features but does
# not define __cplusplus to a value different than with -std=c++11.
list(REMOVE_ITEM CXX_non_features
cxx_aggregate_default_initializers
cxx_digit_separators
)
endif()
# FIXME: Do any of these work correctly on SunPro 5.13 or above?
list(REMOVE_ITEM CXX_non_features
cxx_attribute_deprecated
cxx_contextual_conversions
cxx_extended_friend_declarations
cxx_long_long_type
cxx_sizeof_member
cxx_variadic_macros
)
endif()
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU"
AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.5)
# The cxx_raw_string_literals feature happens to work in some distributions
# of GNU 4.4, but it is first documented as available with GNU 4.5.
list(REMOVE_ITEM CXX_non_features
cxx_raw_string_literals
)
endif()
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU"
AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.6)
# The cxx_constexpr feature happens to work (for *this* testcase) with
# GNU 4.5, but it is first documented as available with GNU 4.6.
list(REMOVE_ITEM CXX_non_features
cxx_constexpr
)
endif()
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU"
AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.8)
# The cxx_alignof feature happens to work (for *this* testcase) with
# GNU 4.7, but it is first documented as available with GNU 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()
if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 18.0)
list(REMOVE_ITEM CXX_non_features
# The cxx_contextual_conversions feature happens to work
# (for *this* testcase) with VS 2010 and VS 2012, but
# they do not document support until VS 2013.
cxx_contextual_conversions
)
elseif (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.0)
list(REMOVE_ITEM CXX_non_features
# The cxx_deleted_functions and cxx_nonstatic_member_init
# features happen to work (for *this* testcase) with VS 2013,
# but they do not document support until VS 2015.
cxx_deleted_functions
cxx_nonstatic_member_init
)
endif()
endif()
if (CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
if (CMAKE_CXX_SIMULATE_ID STREQUAL "MSVC"
AND CMAKE_CXX_SIMULATE_VERSION VERSION_LESS 19.10)
list(REMOVE_ITEM CXX_non_features
cxx_relaxed_constexpr
)
endif()
if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 16.0)
if (CMAKE_CXX_COMIPLER_VERSION VERSION_EQUAL 15.0)
list(REMOVE_ITEM CXX_non_features
# The cxx_contextual_conversions feature happens to work
# (for *this* testcase) with Intel 13/14/15, but they do not
# document support until 16.
cxx_contextual_conversions
)
elseif (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 14.0)
list(REMOVE_ITEM CXX_non_features
cxx_alignof
# not supposed to work until 15
cxx_attribute_deprecated
# The cxx_contextual_conversions feature happens to work
# (for *this* testcase) with Intel 13/14/15, but they do not
# document support until 16.
cxx_contextual_conversions
)
elseif (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 12.1)
list(REMOVE_ITEM CXX_non_features
# These features happen to work but aren't documented to
# do so until 14.0
cxx_constexpr
cxx_enum_forward_declarations
cxx_sizeof_member
cxx_strong_enums
cxx_unicode_literals
# not supposed to work until 15
cxx_attribute_deprecated
cxx_nonstatic_member_init
# The cxx_contextual_conversions feature happens to work
# (for *this* testcase) with Intel 13/14/15, but they do not
# document support until 16.
cxx_contextual_conversions
# This is an undocumented feature; it does not work in future versions
cxx_aggregate_default_initializers
)
endif()
endif()
endif()
if (CMAKE_C_COMPILER_ID STREQUAL "Intel")
if (CMAKE_C_COMPILER_VERSION VERSION_LESS 15.0.2)
# This works on some pre-15.0.2 versions and not others.
list(REMOVE_ITEM C_non_features
c_static_assert
)
endif()
endif()
if (CMAKE_C_COMPILE_FEATURES)
set(C_expected_features ${CMAKE_C_COMPILE_FEATURES})
list(FILTER C_expected_features EXCLUDE REGEX "^c_std_[0-9][0-9]")
endif()
if (CMAKE_CXX_COMPILE_FEATURES)
set(CXX_expected_features ${CMAKE_CXX_COMPILE_FEATURES})
list(FILTER CXX_expected_features EXCLUDE REGEX "^cxx_std_[0-9][0-9]")
endif ()
set(C_ext c)
set(C_standard_flag 11)
set(CXX_ext cpp)
set(CXX_standard_flag 14)
foreach(lang CXX C)
if (${lang}_expected_features)
foreach(feature ${${lang}_non_features})
message("Testing feature : ${feature}")
try_compile(${feature}_works
"${CMAKE_CURRENT_BINARY_DIR}/${feature}_test"
"${CMAKE_CURRENT_SOURCE_DIR}/feature_test.${${lang}_ext}"
COMPILE_DEFINITIONS "-DTEST=${feature}.${${lang}_ext}"
CMAKE_FLAGS "-DCMAKE_${lang}_STANDARD=${${lang}_standard_flag}"
"-DINCLUDE_DIRECTORIES=${CMAKE_CURRENT_SOURCE_DIR}"
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 : ${feature} -- Fails, as expected.")
endif()
endforeach()
endif()
endforeach()
if (C_expected_features)
if (CMAKE_C_STANDARD_DEFAULT)
string(FIND "${CMAKE_C_FLAGS}" "-std=" std_flag_idx)
if (std_flag_idx EQUAL -1)
add_executable(default_dialect_C default_dialect.c)
target_compile_definitions(default_dialect_C PRIVATE
DEFAULT_C23=$<EQUAL:${CMAKE_C_STANDARD_DEFAULT},23>
DEFAULT_C17=$<EQUAL:${CMAKE_C_STANDARD_DEFAULT},17>
DEFAULT_C11=$<EQUAL:${CMAKE_C_STANDARD_DEFAULT},11>
DEFAULT_C99=$<EQUAL:${CMAKE_C_STANDARD_DEFAULT},99>
DEFAULT_C90=$<EQUAL:${CMAKE_C_STANDARD_DEFAULT},90>
)
endif()
endif()
add_executable(CompileFeaturesGenex_C genex_test.c)
set_property(TARGET CompileFeaturesGenex_C PROPERTY C_STANDARD 11)
foreach(f
c_restrict
c_static_assert
c_function_prototypes
)
if(${f} IN_LIST C_expected_features)
set(expect_${f} 1)
else()
set(expect_${f} 0)
endif()
string(TOUPPER "${f}" F)
target_compile_definitions(CompileFeaturesGenex_C PRIVATE
EXPECT_${F}=${expect_${f}}
HAVE_${F}=$<COMPILE_FEATURES:${f}>
)
endforeach()
endif()
if (CMAKE_CXX_COMPILE_FEATURES)
if (CMAKE_CXX_STANDARD_DEFAULT)
string(FIND "${CMAKE_CXX_FLAGS}" "-std=" std_flag_idx)
if (std_flag_idx EQUAL -1)
add_executable(default_dialect default_dialect.cpp)
target_compile_definitions(default_dialect PRIVATE
DEFAULT_CXX26=$<EQUAL:${CMAKE_CXX_STANDARD_DEFAULT},26>
DEFAULT_CXX23=$<EQUAL:${CMAKE_CXX_STANDARD_DEFAULT},23>
DEFAULT_CXX20=$<EQUAL:${CMAKE_CXX_STANDARD_DEFAULT},20>
DEFAULT_CXX17=$<EQUAL:${CMAKE_CXX_STANDARD_DEFAULT},17>
DEFAULT_CXX14=$<EQUAL:${CMAKE_CXX_STANDARD_DEFAULT},14>
DEFAULT_CXX11=$<EQUAL:${CMAKE_CXX_STANDARD_DEFAULT},11>
DEFAULT_CXX98=$<EQUAL:${CMAKE_CXX_STANDARD_DEFAULT},98>
)
endif()
endif()
endif ()
if (CMake_TEST_CUDA
AND CMAKE_CUDA_COMPILE_FEATURES
AND CMAKE_CUDA_STANDARD_DEFAULT
AND NOT CMAKE_CUDA_FLAGS MATCHES "-std=")
add_executable(default_dialect_cuda default_dialect.cu)
target_compile_definitions(default_dialect_cuda PRIVATE
DEFAULT_CXX26=$<EQUAL:${CMAKE_CUDA_STANDARD_DEFAULT},26>
DEFAULT_CXX23=$<EQUAL:${CMAKE_CUDA_STANDARD_DEFAULT},23>
DEFAULT_CXX20=$<EQUAL:${CMAKE_CUDA_STANDARD_DEFAULT},20>
DEFAULT_CXX17=$<EQUAL:${CMAKE_CUDA_STANDARD_DEFAULT},17>
DEFAULT_CXX14=$<EQUAL:${CMAKE_CUDA_STANDARD_DEFAULT},14>
DEFAULT_CXX11=$<EQUAL:${CMAKE_CUDA_STANDARD_DEFAULT},11>
DEFAULT_CXX98=$<EQUAL:${CMAKE_CUDA_STANDARD_DEFAULT},03>
)
endif ()
# always add a target "CompileFeatures"
if ((NOT CXX_expected_features) OR
(NOT cxx_auto_type IN_LIST CXX_expected_features))
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/dummy.cpp"
"int main(int,char**) { return 0; }\n"
)
add_executable(CompileFeatures "${CMAKE_CURRENT_BINARY_DIR}/dummy.cpp")
else()
# these tests only work if at least cxx_auto_type is available
add_executable(CompileFeatures main.cpp)
set_property(TARGET CompileFeatures
PROPERTY COMPILE_FEATURES "cxx_auto_type"
)
set_property(TARGET CompileFeatures
PROPERTY CXX_STANDARD_REQUIRED TRUE
)
add_executable(GenexCompileFeatures main.cpp)
set_property(TARGET GenexCompileFeatures
PROPERTY COMPILE_FEATURES "$<1:cxx_auto_type>;$<0:not_a_feature>"
)
add_library(iface INTERFACE)
set_property(TARGET iface
PROPERTY INTERFACE_COMPILE_FEATURES "cxx_auto_type"
)
add_executable(IfaceCompileFeatures main.cpp)
target_link_libraries(IfaceCompileFeatures iface)
foreach(f
cxx_final
cxx_override
cxx_auto_type
cxx_inheriting_constructors
)
if(${f} IN_LIST CXX_expected_features)
set(expect_${f} 1)
else()
set(expect_${f} 0)
endif()
endforeach()
if(expect_cxx_final AND expect_cxx_override)
set(expect_override_control 1)
else()
set(expect_override_control 0)
endif()
if(expect_cxx_inheriting_constructors AND expect_cxx_final)
set(expect_inheriting_constructors_and_final 1)
else()
set(expect_inheriting_constructors_and_final 0)
endif()
set(genex_test_defs
HAVE_OVERRIDE_CONTROL=$<COMPILE_FEATURES:cxx_final,cxx_override>
HAVE_AUTO_TYPE=$<COMPILE_FEATURES:cxx_auto_type>
HAVE_INHERITING_CONSTRUCTORS=$<COMPILE_FEATURES:cxx_inheriting_constructors>
HAVE_FINAL=$<COMPILE_FEATURES:cxx_final>
HAVE_INHERITING_CONSTRUCTORS_AND_FINAL=$<COMPILE_FEATURES:cxx_inheriting_constructors,cxx_final>
EXPECT_OVERRIDE_CONTROL=${expect_override_control}
EXPECT_INHERITING_CONSTRUCTORS=${expect_cxx_inheriting_constructors}
EXPECT_FINAL=${expect_cxx_final}
EXPECT_INHERITING_CONSTRUCTORS_AND_FINAL=${expect_inheriting_constructors_and_final}
)
if (CMAKE_CXX_STANDARD_DEFAULT)
list(APPEND genex_test_defs
TEST_CXX_STD
HAVE_CXX_STD_11=$<COMPILE_FEATURES:cxx_std_11>
HAVE_CXX_STD_14=$<COMPILE_FEATURES:cxx_std_14>
HAVE_CXX_STD_17=$<COMPILE_FEATURES:cxx_std_17>
HAVE_CXX_STD_20=$<COMPILE_FEATURES:cxx_std_20>
HAVE_CXX_STD_23=$<COMPILE_FEATURES:cxx_std_23>
HAVE_CXX_STD_26=$<COMPILE_FEATURES:cxx_std_26>
)
endif()
add_executable(CompileFeaturesGenex genex_test.cpp)
set_property(TARGET CompileFeaturesGenex PROPERTY CXX_STANDARD 11)
target_compile_definitions(CompileFeaturesGenex PRIVATE ${genex_test_defs})
add_executable(CompileFeaturesGenex2 genex_test.cpp)
target_compile_features(CompileFeaturesGenex2 PRIVATE cxx_std_11)
target_compile_definitions(CompileFeaturesGenex2 PRIVATE ${genex_test_defs} ALLOW_LATER_STANDARDS=1)
add_library(std_11_iface INTERFACE)
target_compile_features(std_11_iface INTERFACE cxx_std_11)
add_executable(CompileFeaturesGenex3 genex_test.cpp)
target_link_libraries(CompileFeaturesGenex3 PRIVATE std_11_iface)
target_compile_definitions(CompileFeaturesGenex3 PRIVATE ${genex_test_defs} ALLOW_LATER_STANDARDS=1)
endif()
if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC"
AND (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 19.30
# The MSVC 14.29.30133 toolset supports C++20,
# but MSBuild puts the flags in the wrong order.
OR (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 19.29.30129 AND NOT CMAKE_GENERATOR MATCHES "Visual Studio")
)
)
add_library(msvc_permissive msvc_permissive.cxx)
target_compile_features(msvc_permissive PRIVATE cxx_std_20)
# The `-std:c++20` flag implies `-permissive-`. Test passing `-permissive` afterward.
target_compile_options(msvc_permissive PRIVATE -permissive)
endif()