[OE-core] RFC: eclipse debug functionality issue

[Khem Raj]

On 8/4/16 2:20 PM, Brian Avery wrote:
> The core issue:
> The busybox resize command breaks the eclipse ssh debug stream.  This is
> because the resize command for busybox sends a set of cursor control
> escape sequences to stderr. The resize cfg was added to Krogoth and is
> still in master.  The point of resize is to set the environment and
> terminal settings to the current xterm window size.
> 
> Additional complexity:
> eclipse-debug is an IMAGE_FEATURE.  If it is turned on by a user in
> local.conf via EXTRA_IMAGE_FEATURES then I can conditionally turn off
> busybox/resize in the cfg file.  Unfortunately, if a user makes a new
> image with IMAGE_FEATURES += " eclipse-debug " in it, I do not see this
> from the scope of the busybox##.bb recipe.
> 
> So, there are a couple of ways to solve this and I'm not sure which is
> the best one.
> 
> 1) conditionally turn off the resize.cfg if eclipse-debug is in
> extra-image-features.  Also, make a rm_resize.bbclass to rm the
> usr/bin/resize from the rootfs in a do_rootfs[postfuncs] which can be
> inherited by the various sdk images we build.
> 
> This is problematic since if a user makes a new image recipe of their
> own and includes eclipse-debug but doesn't inherit the rm_resize.bbclass
> eclipse debug will fail.
> 
> 2) elevate eclipse-debug to a distro feature which would make it visible
> to the busybox###.bb recipe.  Unfortunately, it is really an image
> specific set of packages to be included so elevating it doesn't seem
> reasonable.
> 
> 3)   use the update-alternatives method (busybox is currently doing this
> for syslog) to make a separate busybox-resize package and make an
> eclipse friendly resize package that is empty and add the eclipse one to
> the eclipse-debug packagegroup.
> 
> 4) Just turn off resize or patch it so it doesn't try to control the
> cursor via escape sequences sent to stderr but still sets up the
> environment.  It's worth noting that the ubuntu  resize doesn't send
> escape sequences to any of the streams.

this seems to be best option.

> 
> 5) Something else?
> 
> Thanks,
> Brian
> an Intel employee
> 
>  
> 
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