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Clang: Add final C++20 flag for Clang 11.0+

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-std=c++20 superseded -std=c++2a in upstream Clang commit
24ad121582454e625bdad125c90d9ac0dae948c8.
This commit is contained in:
Raul Tambre
2020-06-13 11:13:55 +03:00
parent 594fda9c23
commit 5d26efe38f
1 changed files with 4 additions and 1 deletions
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5
Modules/Compiler/Clang.cmake
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@@ -146,7 +146,10 @@ macro(__compiler_clang_cxx_standards lang)
set(CMAKE_${lang}17_EXTENSION_COMPILE_OPTION "-std=gnu++1z")
endif()
if (NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS "${_clang_version_std17}")
if(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 11.0)
set(CMAKE_${lang}20_STANDARD_COMPILE_OPTION "-std=c++20")
set(CMAKE_${lang}20_EXTENSION_COMPILE_OPTION "-std=gnu++20")
elseif(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS "${_clang_version_std17}")
set(CMAKE_${lang}20_STANDARD_COMPILE_OPTION "-std=c++2a")
set(CMAKE_${lang}20_EXTENSION_COMPILE_OPTION "-std=gnu++2a")
endif()