[oe] PARALLEL_MAKE

[Richard Purdie]

On Fri, 2009-03-13 at 17:20 +0100, Frans Meulenbroeks wrote:
> I'm not sure how PARALLEL_MAKE is supposed to work, but I noticed that
> often there is a problem because with it a package on which there is a
> dependency is build in parallel. Since there is a dependency in a lot
> of cases the underlying package fails.
> 
> A typical scenario:
> a package X depends on perl-native, typically they start to build in
> parallel but perl-native does take much longer than X. X requires
> perl-native to complete and fails.
> 
> Parallelism within a task (e.g. running two compiles in parallel would work).
> Parallelism between tasks is tricky although some of them can always
> be parallelized (e.g. downloading, unpacking and patching).

Bitbake is aware of dependencies and will not build a task until all the
dependent tasks are complete. If something breaks due to something being
missing, its most likely a bug in the metadata and DEPENDS are probably
missing from a recipe.

Regards,

Richard