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From: Franz (fschnyder_at_[hidden])
Date: 2007-09-27 02:13:38


Has anybody ever investigated on the -j bug 'The -j flag can cause bjam to get
confused when single actions update more than one target at a time...'?

My Problem is, that our development machines are updated to dual cores and a -j2
would cut down the building time to nearly half the time used with -j1. But we
can't use -j2, because we have actions, were we hit the -j bug and the build
always fails the first time, so we switched back to -j1.

I had a quick look at the jam source code but I'm quite lost in it. I found the
execcmd and execwait functions but I couldn't yet figure out how jam waits for
the end of a action. Has anybody an idea were I could start looking for the bug,
or could give me hint how the actions are executed and waited for? Thanks for
any help. Id would be nice to use the full power of our new dual core machines.



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