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Subject: Re: [boost] clang toolset on mingw passes -mthreads instead of -pthread
From: Vladimir Prus (ghost_at_[hidden])
Date: 2014-06-16 04:47:47

On 06/13/2014 05:06 AM, Edward Diener wrote:
> On 6/11/2014 3:16 PM, Peter Dimov wrote:
>> Can someone who is familiar with Boost.Build please look at the Clang
>> toolset and figure out how can it be persuaded to use the correct
>> -pthread option instead of -mthreads under Windows/MinGW?
> I am away from my home computer right now but I will push a local branch of Boost Build for clang under Windows/mingw when I get back (
> another week ).
> I am not a Boost Build expert so whatever little I have done is just a hack based on others.
> I tried to get the Boost Build people interested in toolsets for clang on Windows in the past, but without success. Maybe you will be more
> successful. I wanted both a toolset for clang Windows/VC++ and clang Windows/mingw.
> The basic hack of clang Windows/mingw is to take 'rule setup-threading' from gcc.jam, add it to clang-linux.jam, change 'case windows :
> option = -mthreads ;' to 'case windows : option = -pthread ;', and then change every invocation in clang=linux.jam of 'gcc.setup-threading'
> to just 'setup=threading'.

I might be mistaken, but my recollection is that last time around, clang/windows support was a local change somebody worked on. There's
no clang support for Windows in develop, and I'm not aware of any pull requests to add it. Further, I recall in our last discussion you
indicated clang support for threading on windows is defective in some way and not worth pursuing further.

If either of that's inaccurate, please post a link to a pull request, and I'll take a look.

- Volodya

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