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Downgrade build system error message to a warning 

Instead of requiring MSVC 2013 U4, we simply warn users, since some might
not bt able to immediately upgrade.

llvm-svn: 229598
This commit is contained in:
Filipe Cabecinhas 2015-02-18 01:12:38 +00:00
parent e990a3f60c
commit 3c7469396a
1 changed files with 5 additions and 2 deletions
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7
llvm/cmake/modules/HandleLLVMOptions.cmake
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@ -41,8 +41,11 @@ int main() { return (float)x; }"
set(CMAKE_REQUIRED_LIBRARIES ${OLD_CMAKE_REQUIRED_LIBRARIES})
endif()
elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 18.0.31101)
message(FATAL_ERROR "Host Visual Studio must be at least 2013 Update 4 (MSVC 18.0.31101)")
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 18.0)
message(FATAL_ERROR "Host Visual Studio must be at least 2013")
elseif(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 18.0.31101)
message(WARNING "Host Visual Studio should at least be 2013 Update 4 (MSVC 18.0.31101)"
" due to miscompiles from earlier versions")
endif()
endif()
endif()