Re: [Boost-build] What controls the error messages from"check-target-builds"?

Subject: Re: [Boost-build] What controls the error messages from"check-target-builds"?
From: Vladimir Prus (ghost_at_[hidden])
Date: 2010-07-31 06:26:55

On Saturday 31 July 2010 12:47:26 John Maddock wrote:

> > All compiler messages are supposed to go to config.log -- does that seem 
> > OK?
> 
> Yep, ideal, for future reference where is that file located?

When building Boost C++ Libraries, it's <root>/bin.v2/config.log

> > If so, do you have a recipe where those messages end up in stdout instead?
> 
> Apparently it happens when bjam is invoked from Visual Studio as a custom 
> build step, I've personally seen it outside of that when running bjam from 
> the command line, but not in a way I can reproduce at present :-(

Strange. The code that redirects output to the file is as follows:

    if (log)
    {
        int fd = atoi(log->string);
        /* Redirect stdout and stderr, temporary, to the log file.  */
        original_stdout = dup (0);
        original_stderr = dup (1);
        dup2 (fd, 0);
        dup2 (fd, 1);
    }

I think this is pretty standard solution. Do you think an older version
of bjam may be in use -- in theory, no test will be even compiled in that
case, but maybe it's compiled in a regular way instead.

Thanks,

--
Vladimir Prus
http://vladimir_prus.blogspot.com
Boost.Build: http://boost.org/boost-build2