[cfe-dev] Building clang on Windows for MingW with CMake/Ninja

[Edward Diener]

On 2/2/2014 8:33 PM, NAKAMURA Takumi wrote:
> 2014-02-03 Edward Diener <eldlistmailingz at tropicsoft.com>:
>> On 1/30/2014 1:40 PM, Reid Kleckner wrote:
>>>
>>> I think it's because clang doesn't know about -mthreads.
>>
>>
>> Does clang/Windows using the MingW/gcc RTL support multithreading ? If so is
>> there a command line option for this ?
>
> IIRC, not yet.

OK, Thanks ! That does not help with Boost testing as quite a few Boost 
libraries either need multi-threading or test for multi-threading as 
part of their overall tests.

 From my point of view, just testing clang on Windows with Boost, 
neither the clang build with MingW/gcc RTL nor the clang-cl with VC++ 
RTL is really ready yet. For other more simplified uses of clang on 
Windows outside of Boost either may be fine.

I realize that clang developers have different priorities so I will 
revisit clang on Windows sometime in the future to see if some of the 
issues I have encountered have been resolved.

Thanks everybody for your help and good luck !

>
>>> On Wed, Jan 29, 2014 at 11:22 PM, Edward Diener
>>> <eldlistmailingz at tropicsoft.com
>>> <mailto:eldlistmailingz at tropicsoft.com>> wrote:
>>>
>>>      When I build clang on Windows for MingW with CMake/Ninja I get from
>>>      Cmake:
>>>
>>>      -- Warning: LLVM will be built thread-unsafe because atomic builtins
>>>      are missing
>>>      -- Could NOT find LibXml2 (missing:  LIBXML2_INCLUDE_DIR)
>>>
>>>      The CMake setup finishes successfully. When I invoke clang++ with
>>>      the options:
>>>
>>>      -c -x c++ -O0 -g -fno-inline -Wall -g -mthreads
>>>
>>>      I get:
>>>
>>>      clang++.exe: error: unknown argument: '-mthreads'
>>>
>>>      Is this because of either of the problems beforehand when CMake wqas
>>>      used ? If so how do I correct the CMake problems ?
>>>
>>>
>>>
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>>
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