[OE-core] [bitbake-devel] Generating extensible SDK fails because of missing LAYERSERIES_CORENAMES

[Damien Riegel]

On Sat, May 26, 2018 at 08:22:39AM -0400, Damien Riegel wrote:
> Hi,
> 
> 
> When generating the extended SDK, my setup fails with the following
> error:
> 
>   ERROR: Failed to generate filtered task list for extensible SDK:
>   ERROR: bitbake failed:
>   ERROR: Unable to start bitbake server
> 
> I digged into the issue and found out why bitbake doesn't
> start.
> 
> bitbake thinks layers are incompatible because they define
> LAYERSERIES_COMPAT but LAYERSERIES_CORENAMES is not set. So this check
> in cookerdata.py fails [1].
> 
> The reason this check fails is that the core `meta` layer is not listed
> in the generated BBLAYERS, because it's treated in a special way in
> populate_sdk_ext.bbclass [2]. So as this layer is not listed in
> BBLAYERS, the compatibility check fails and bitbake cannot start.
> 
> 
> Shouldn't `meta` simply be added to BBLAYERS as any other layer? If not,
> what is the proper way to solve my bug?

I think it got confused because the `meta` layer is contained in a
folder named `meta` as well.

I managed to go further in my build with the following snippet:

--- a/meta/classes/populate_sdk_ext.bbclass
+++ b/meta/classes/populate_sdk_ext.bbclass
@@ -207,7 +207,7 @@ python copy_buildsystem () {
     sdkbblayers = []
     corebase = os.path.basename(d.getVar('COREBASE'))
     for layer in layers_copied:
-        if corebase == os.path.basename(layer):
+        if corebase == layer:
             conf_bbpath = os.path.join('layers', layer, 'bitbake')
         else:
             sdkbblayers.append(layer)

> 
> [1] https://github.com/openembedded/bitbake/blob/master/lib/bb/cookerdata.py#L397
> [2] https://github.com/openembedded/openembedded-core/blob/master/meta/classes/populate_sdk_ext.bbclass#L208
> 
> Thank you,
> -- 
> Damien
> -- 
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-- 
Damien Riegel 
Free Software Consultant
Tel: +1 514 276 5468 (ext: 355)