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Clang: C17 default version

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Switched in LLVM commit 91cdbd521a38495c66e30636943563ca70d3c022, released in
Clang 11.

Issue: #17755
This commit is contained in:
Raul Tambre
2021-02-06 18:25:47 +02:00
parent 9024fb632e
commit 82239d43f8
2 changed files with 4 additions and 2 deletions
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2
Modules/Compiler/Clang-C.cmake
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@@ -67,7 +67,7 @@ if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 3.0)
endif()
if(NOT "x${CMAKE_C_SIMULATE_ID}" STREQUAL "xMSVC")
__compiler_check_default_language_standard(C 2.1 99 3.5.2 11)
__compiler_check_default_language_standard(C 2.1 99 3.5.2 11 11.0 17)
else()
set(CMAKE_C_STANDARD_DEFAULT "")
endif()

4
Tests/RunCMake/CMakeLists.txt
View File

@@ -420,7 +420,9 @@ function(add_RunCMake_test_try_compile)
if(CMAKE_VERSION VERSION_LESS 3.20.20210225 AND "x${CMAKE_C_COMPILER_ID}" STREQUAL "xClang")
# Older CMake versions do not know about Clang MSVC compatibility mode
# standards. Approximate the logic from Clang-C.cmake.
if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 3.5.2)
if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 11.0)
set(CMAKE_C_STANDARD_DEFAULT 17)
elseif(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 3.5.2)
set(CMAKE_C_STANDARD_DEFAULT 11)
endif()
endif()