Suggestion for end of Makefile

Magnus Ihse Bursie magnus.ihse.bursie at
Fri Oct 31 13:31:51 UTC 2014

On 2014-10-25 00:31, Jonathan Gibbons wrote:
> Re: JDK builds,
> The new parallel make is wonderfully fast (thank you) but less great 
> when it comes to figuring out why a build failed, especially when you 
> don't have full access to the build machine, as is the case with 
> "build servers", where you get the build log, and the product bits if 
> the build is successful.
> I finally figured out a tip and wonder if it would be worth adding 
> this to the end of the build.
> If the build fails, grep through the log looking for lines containing 
> the text "recipe for .* failed".
> Would it be possible to have the build report any such lines in the 
> summary at the end of the log?

Good idea!

I think it would be even better to grep for "Error 2" and include some 
context before that line; in my experience that gets you closer to the 
actual error.

But as Erik says, it will need some experimentation.


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