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Code Pull Requests Activity

add feature detection machinery

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This commit is contained in:
Ferdinand Bachmann
2020-04-18 12:39:31 +02:00
parent ce9d000673
commit 5feb3f4f60
7 changed files with 315 additions and 222 deletions
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5
detect/constexpr_destructors.cpp Normal file
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struct test {
constexpr ~test() {}
};
int main() {}

19
detect/features.cmake Normal file
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if(cxx_noexcept IN_LIST CMAKE_CXX_COMPILE_FEATURES)
set(RING_BUFFER_NOEXCEPT ON)
message(STATUS "Detected support for conditional noexcept")
endif()
if(cxx_constexpr IN_LIST CMAKE_CXX_COMPILE_FEATURES)
set(RING_BUFFER_CONSTEXPR ON)
message(STATUS "Detected support for constexpr")
endif()
try_compile(constexpr-destructors-compile ${CMAKE_BINARY_DIR}/detect ${CMAKE_SOURCE_DIR}/detect/constexpr_destructors.cpp
CXX_STANDARD ${CMAKE_CXX_STANDARD}
CXX_STANDARD_REQUIRED ${CMAKE_CXX_STANDARD_REQUIRED}
CXX_EXTENSIONS ${CMAKE_CXX_EXTENSIONS}
)
if(constexpr-destructors-compile)
set(RING_BUFFER_CONSTEXPR_DESTRUCTORS ON)
message(STATUS "Detected support for constexpr destructors")
endif()

15
detect/standard.cmake Normal file
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if(cxx_std_20 IN_LIST CMAKE_CXX_COMPILE_FEATURES)
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
elseif(cxx_std_17 IN_LIST CMAKE_CXX_COMPILE_FEATURES)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
elseif(cxx_std_14 IN_LIST CMAKE_CXX_COMPILE_FEATURES)
set(CMAKE_CXX_STANDARD 14)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
elseif(cxx_std_11 IN_LIST CMAKE_CXX_COMPILE_FEATURES)
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
endif()
message(STATUS "Detected Standard Version: C++${CMAKE_CXX_STANDARD}")