[oe] MULTIMACHINE builds and PACKAGE_ARCH=all recipes

[Khem Raj]

On Wed, Aug 4, 2010 at 9:09 AM, Robert Schuster <thebohemian at gmx.net> wrote:
> Hi,
> I am in the process of updating the java recipes to use
> BBCLASSEXTEND="native" and fixing the do_stage use. However now I hit a
> problem because of a workaround which was added months ago to install
> Java libraries (jars) into one common directory in a multimachine build.
> This workaround was *additionally* specifically added to the angstrom
> 2008 distribution.
>
> The problem that people wanted to solve was that in a multimachine build
> the installation of a PACKAGE_ARCH="all" recipe was only being done once

that seems a bug to me.

> and so from the 2nd machine onwards the build process was unable to
> access the jars.
>
> For me I always wondered how it is for python, C# or perl
> programs/libraries which we provide and why there is no problem with
> them. As it looks they go the simple way and simply do not appear to
> have set PACKAGE_ARCH="all".
>
> So for now I see 2 solutions for the Java recipes:
> 1) Java packages do not appear as arch-independent anymore.

its going to work but has additional penalty of compiling stuff.

> 2) Bitbake (or OE) should be taught to install an arch dependent package
> into all sysroots of a multimachine build.
>

this seems the right fix.

> The former is quickly done because most recipes use java-library.bbclass
> but I find this technically wrong somehow (it also slows down everyone's
> multimachine builds considerably).
>
> I don't know how difficult or feasible it is to implement the 2nd option
> (Bitbake gods anyone?) or whether there might even be a third option.
>
> I only know that the shit has hit the fan ... :-/
>
> Regards
> Robert
>
>
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