[OE-core] [PATCH 01/17] conf/bitbake.conf package.bbclass: fix dbg package not contain sources while -fdebug-prefix-map used

[Andreas Müller]

On Mon, Apr 18, 2016 at 3:55 PM, Burton, Ross <ross.burton at intel.com> wrote:
>
> On 18 April 2016 at 14:08, Hongxu Jia <hongxu.jia at windriver.com> wrote:
>>
>> If sysroot is required, override DEBUG_FLAGS to remove -fdebug-prefix-map
>
>
> We should probably get this in the release notes, as many people do indeed
> want remote debug to work.
>
> Can you tell gdb the base path to use when looking for symbols?  I've not
> done remote GDB for some time but wouldn't "set substitute-path /
> //my/sysroot/" work?  Or maybe /usr /my/sysroot/usr?
>
> If gdb can't be told then instead of having to replace all of DEBUG_FLAGS it
> would be neat if the prefix mapping variables where in another variable that
> could just be unset.
>
> Ross
OK I think I could live with removing -fdebug-prefix-map for now.

A thought: We have the setting IMAGE_GEN_DEBUGFS - I have not yet
tested. As far as I understand it creates an unstripped sysroot and
does not affect target rootfs - is that correct? Does the sysroot
created by IMAGE_GEN_DEBUGFS contain the sources? If yes we could set
that as sysroot for gdb.

I think one of the problems we have here is that there is no reference
way documented (or it is outdated) how remote debugging is meant to be
performed.

Andreas