Bug 8554

Summary: Support for self-contained "baremetal" CPU meta-layers
Product: [Build System, Metadata & Runtime] BitBake Reporter: Juro Bystricky <juro.bystricky>
Component: bitbakeAssignee: Richard Purdie <richard.purdie>
Status: RESOLVED FIXED QA Contact: Daniel Istrate <daniel.alexandrux.istrate>
Severity: enhancement    
Priority: Medium CC: alexandru.c.georgescu, poky.bs.watcher, poky.watcher, tim.orling
Version: 2.1   
Target Milestone: 2.2 M3   
Hardware: All   
OS: other   
Whiteboard:
OS type for building Yocto: --- Type of Regression: ---
Verified: Documentation change: Yes (doc changes required)

Description Juro Bystricky 2015-10-22 00:43:16 UTC 
Support already exists for building "baremetal" cross-compilers for various CPUs.
At present, when adding a new CPU support, we need to modify time:

    meta/classes/insane.bbclass
    meta/classes/kernel-arch.bbclass
    meta/classes/siteinfo.bbclass

The modifications themselves are simple, but it would be a cleaner solution
if whatever info is needed by these classes would be pulled from CPU specific  meta-layer (somehow). This way the meta-layer would be self-contained.
Comment 1 Juro Bystricky 2015-10-22 00:44:16 UTC 
s/we need to modify time:/we need to modify:/
Comment 2 Richard Purdie 2016-07-22 14:28:58 UTC 
I've posted patches for siteinfo and insane. For kernel-arch, firstly there are only a limited number of supported linux kernel arches and secondly, an overide like ARCH_pn-linux-XXX = "Y" can usually be used. I'm therefore not proposing to change that one.