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List:       openembedded-core
Subject:    Re: [OE-core] [PATCH] base.bbclass: Add sstate-cache dependency to GCCVERSION
From:       "Richard Purdie" <richard.purdie () linuxfoundation ! org>
Date:       2022-06-30 15:28:00
Message-ID: eb07e0ecfc61d8848497773025c1bb8a4b57035b.camel () linuxfoundation ! org
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On Thu, 2022-06-30 at 16:14 +0200, Tomasz Dziendzielski wrote:
> Would setting dependency to SDKGCCVERSION be more acceptable?

No, it wouldn't. It doesn't address the manjority of my concerns.

> That way native recipes will not depend on target gcc version.

The native recipes shouldn't depend on the SDK gcc version either.

> > I'm guessing what has happened in your case is that a
> > TMPDIR as reused after changing gcc version but something didn't
> > rebuild, probably as ${S} == ${B} and hence ${B} couldn't be
> > cleaned
> 
> The problem is not that it didn't rerun the make or didn't clean the
> ${B} or ${S}. After changing GCCVERSION the nativesdk-mgen is taken
> from sstate-cache.

I don't believe that is the issue. I don't have "nativesdk-mgen", but
taking nativesdk-sed as an example:

$ bitbake nativesdk-sed -S none

(to dump the signatures for that recipe)

$ bitbake-dumpsig tmp/stamps/aarch64-nativesdk-pokysdk-linux/nativesdk-sed/4.8-r0.do_prepare_recipe_sysroot.sigdata.*


shows:

Hash for dependent task \
/media/build1/poky/meta/recipes-devtools/gcc/gcc-crosssdk_12.1.bb:do_populate_sysroot \
is 4a58e102e0d4e2652a7f960e728b5ae3465a03a9fe6c26135ab6b4dc5b89b951 Hash for \
dependent task virtual:nativesdk:/media/build1/poky/meta/recipes-devtools/gcc/gcc-runtime_12.1.bb:do_populate_sysroot \
is 3bcf5017659d63c6e744140dde8db8a9e37a412a38924ab5f1031337dec44198

amongst other things.

i.e. the nativesdk recipes *clearly* do have a dependency on the gcc
version used for nativesdk.

Cheers,

Richard



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