Re: [Boost-build] darwin: precompiled headers

Subject: Re: [Boost-build] darwin: precompiled headers
From: Vladimir Prus (ghost_at_[hidden])
Date: 2008-11-09 01:12:14

On Sunday 09 November 2008 02:04:01 Jeroen van der Wulp wrote:
> Hello everyone,
> 
> The darwin toolset uses the gcc precompiled header generator, but it 
> generates names that end in .pch instead of .gch. As a result the 
> precompiled headers are never found and hence never used. This is with 
> Boost Build v2 from Boost trunk.
> 
> Adding the following line to tools/darwin.jam resolves the issue.
> 
> type.set-generated-target-suffix PCH : <toolset>darwin : gch ;
> 
> This makes it possible to use precompiled headers on OS X 10.5.5 with 
> XCode 3.1. Is it just coincidence or are there any obstacles on other 
> versions of OS X (and XCode)? Should it be needed, I also have access to 
> a 10.4 machine that I can use for testing.

I think this is just an accidental breakage. I've applied your suggested patch, thanks!

Do you think you can to go 'test' subdir of boost.build and run

        python pch.py darwin

there to double-check that PCH now works fine?

Thanks,
Volodya