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Clang: Set standard flags according to frontend variant

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They depend on the frontend not which compiler we're simulating.

Fixes #21771.
This commit is contained in:
Raul Tambre
2021-02-06 18:37:20 +02:00
parent 9f81591dbf
commit 6c2e309a66
1 changed files with 1 additions and 1 deletions
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2
Modules/Compiler/Clang-C.cmake
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@@ -25,7 +25,7 @@ elseif("x${CMAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "xGNU")
endif()
endif()
if(NOT "x${CMAKE_C_SIMULATE_ID}" STREQUAL "xMSVC")
if("x${CMAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "xGNU")
if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 2.1)
set(CMAKE_C90_STANDARD_COMPILE_OPTION "-std=c90")
set(CMAKE_C90_EXTENSION_COMPILE_OPTION "-std=gnu90")