How can I monitor the output of a compile?

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Peter Steele - 19 Jun 2005 20:48 GMT

I have an automated build that does something like this

devenv mysolution.sln /build Debug >output.log 2>&1

I want to be able to monitor output.log to observe the build in progress.
However, nothing appears in this log file until the build is completely
done. I tried instead to use

devenv mysolution.sln /build Debug /out output.log

but when I try to look at output.log in this case I get an error because it
appears devenv puts an exclusive lock on this file.

I there another way I can accomplish this?

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Phill. W - 23 Jun 2005 11:58 GMT

> I have an automated build that does something like this
> devenv mysolution.sln /build Debug >output.log 2>&1
>
> I want to be able to monitor output.log to observe the build
> in progress.

To what end?
I can't think of many /useful/ things that you could do as part of a
such an exercise. A build is a build; a unit of work that either
works or doesn't, so you might as well wait for it to finish.

Regards,
Phill W.

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Marsh J. Ray - 26 Jun 2005 01:18 GMT

> I have an automated build that does something like this
>
[quoted text clipped - 3 lines]
> However, nothing appears in this log file until the build is completely
> done.

There is likely buffering of the stdout of devenv.exe, I don't think
there's much you can do about that. Also, the cmd.exe redirections don't
always seem to share nicely with other processes.

I've had better luck using cygwin's "tail", where output.log has already
been created and the tail is started first.
You might try truncating output.log, starting "tail -f output.log", and
then starting devenv with redirecting with append redirection

>>output.log 2>&1

You could also call CreateProcess and have devenv inherit pipe handles
that you read from (not simple).

Good luck,

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Marsh J. Ray
Senior Software Developer
ScriptPro
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How can I monitor the output of a compile?

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