[LLVMdev] Status of compiling on MSVC < 2012

[Zachary Turner]

Thanks, the last actual list discussion I could find was one that mentioned
dropping support for 2008, but that was only about a year ago, and the
discussion seemed controversial, so I wasn't sure.  I'll double check that
the definitions are present in a vanilla install of 2012, and if they are I
will remove them from the llvm header.


On Sun, May 25, 2014 at 12:15 AM, Nick Lewycky <nicholas at mxc.ca> wrote:

> Zachary Turner wrote:
>
>> As the title suggests, what is the status of compiling llvm on versions
>> of MSVC less than 2012?  Not so much "Does it work?", but more like
>> "Should any thought be given to whether or not something will break it?"
>>
>
> No. See http://llvm.org/docs/CodingStandards.html#
> supported-c-11-language-and-library-features where we state that the
> minimum versions are MSVC 2012, GCC 4.7 and Clang 3.1.
>
>
>  Right now there are a bunch of warnings when compiling LLDB on Windows
>> because it uses various symbols which have been defined since VS2012,
>> but which are re-defined in llvm support header files.  In the process
>> of addressing this, I noticed in include\llvm\Support\DataTypes.h.in
>> that it redefines a bunch of other stuff as well
>> from stdint.h and inttypes.h with a comment about how these definitions
>> were only added in certain updates to VC++.  However, this was an update
>> to MSVC 2010 if my memory serves me correctly, so if it's not necessary
>> to support 2010, then I can clean up some of the stuff in this header at
>> the same time that I'm fixing the warnings.
>>
>
> Cleaning up code sounds great!
>
> Nick
>
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