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Merge branch 'backport-clang-gnulike-support' into release-3.15

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Merge-request: !3592
This commit is contained in:
Brad King
2019-07-24 08:12:51 -04:00
parent 07b93cb185 4f15a6a5c2
commit 420073e536
20 changed files with 42 additions and 43 deletions
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Modules/Compiler/Clang-CXX.cmake
+7
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@@ -58,6 +58,13 @@ if("x${CMAKE_CXX_COMPILER_FRONTEND_VARIANT}" STREQUAL "xGNU")
unset(_clang_version_std17)
if("x${CMAKE_CXX_SIMULATE_ID}" STREQUAL "xMSVC")
# The MSVC standard library requires C++14, and MSVC itself has no
# notion of operating in a mode not aware of at least that standard.
set(CMAKE_CXX98_STANDARD_COMPILE_OPTION "-std=c++14")
set(CMAKE_CXX98_EXTENSION_COMPILE_OPTION "-std=gnu++14")
set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-std=c++14")
set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-std=gnu++14")
# This clang++ is missing some features because of MSVC compatibility.
unset(CMAKE_CXX11_STANDARD__HAS_FULL_SUPPORT)
unset(CMAKE_CXX14_STANDARD__HAS_FULL_SUPPORT)