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fix feature detection for strong enough constexpr

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This commit is contained in:
Ferdinand Bachmann
2020-04-18 13:56:49 +02:00
parent 47f3737fb4
commit 97c4bed1ec
2 changed files with 6 additions and 6 deletions
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2
CMakeLists.txt
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@ -8,7 +8,7 @@ option(RING_BUFFER_BUILD_TESTS "build test cases for the ring buffer library" ON
option(RING_BUFFER_FEATURE_DETECT "try to detect if c++ features are supported" ON)
option(RING_BUFFER_NOEXCEPT "enable conditionally noexcept ring_buffer (c++11)" OFF)
option(RING_BUFFER_CONSTEXPR "enable constexpr ring_buffer (c++11)" OFF)
option(RING_BUFFER_CONSTEXPR "enable constexpr ring_buffer (c++14)" OFF)
option(RING_BUFFER_CONSTEXPR_DESTRUCTORS "enable constexpr destructor for ring_buffer (c++20)" OFF)
if(RING_BUFFER_CXXFLAGS)

10
detect/features.cmake
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@ -1,11 +1,11 @@
if(cxx_noexcept IN_LIST CMAKE_CXX_COMPILE_FEATURES)
if(${CMAKE_CXX_STANDARD} GREATER_EQUAL 11)
set(RING_BUFFER_NOEXCEPT ON)
message(STATUS "Detected support for conditional noexcept")
message(STATUS "Enabling RING_BUFFER_NOEXCEPT (C++11 and up)")
endif()
if(cxx_constexpr IN_LIST CMAKE_CXX_COMPILE_FEATURES)
if(${CMAKE_CXX_STANDARD} GREATER_EQUAL 14)
set(RING_BUFFER_CONSTEXPR ON)
message(STATUS "Detected support for constexpr")
message(STATUS "Enabling RING_BUFFER_CONSTEXPR (C++14 and up)")
endif()
try_compile(constexpr-destructors-compile ${CMAKE_BINARY_DIR}/detect ${CMAKE_SOURCE_DIR}/detect/constexpr_destructors.cpp
@ -15,5 +15,5 @@ try_compile(constexpr-destructors-compile ${CMAKE_BINARY_DIR}/detect ${CMAKE_SOU
)
if(constexpr-destructors-compile)
set(RING_BUFFER_CONSTEXPR_DESTRUCTORS ON)
message(STATUS "Detected support for constexpr destructors")
message(STATUS "Enabling RING_BUFFER_CONSTEXPR_DESTRUCTORS (C++20 and up)")
endif()