[yocto] What is the best practice for customizing libraries included in yocto distribution?

[Federico Vitali]

Thank you Nicholas and Gary! I'm quite experienced in linux embedded
developement, but I'm new to yocto / openembedded.
Nicolas, can you please explain me how to use my sources separate from OE
build dir tree and still using oe built system?
Do I have to edit the sources directly in builddir/tmp/work/etcetera or can
I keep it separate?




2014-03-14 10:24 GMT+01:00 Nicolas Dechesne <nicolas.dechesne at linaro.org>:

> On Fri, Mar 14, 2014 at 10:10 AM, Gary Thomas <gary at mlbassoc.com> wrote:
> >>   CCLD   libgsttag-0.10.la <http://libgsttag-0.10.la>
> >> libtool: link: warning: library
> `/opt/poky/1.5.1/sysroots/armv6-vfp-poky-linux-gnueabi/usr/lib/
> libgstbase-0.10.la <http://libgstbase-0.10.la>' was moved.
> >> libtool: link: warning: library
> `/opt/poky/1.5.1/sysroots/armv6-vfp-poky-linux-gnueabi/usr/lib/
> libgstreamer-0.10.la <http://libgstreamer-0.10.la>' was moved.
> >> libtool: link: warning: library
> `/opt/poky/1.5.1/sysroots/armv6-vfp-poky-linux-gnueabi/usr/lib/
> libgobject-2.0.la <http://libgobject-2.0.la>' was moved.
> >> libtool: link: warning: library
> `/opt/poky/1.5.1/sysroots/armv6-vfp-poky-linux-gnueabi/usr/lib/
> libgmodule-2.0.la <http://libgmodule-2.0.la>' was moved.
> >> libtool: link: warning: library
> `/opt/poky/1.5.1/sysroots/armv6-vfp-poky-linux-gnueabi/usr/lib/
> libgthread-2.0.la <http://libgthread-2.0.la>' was moved.
> >> libtool: link: warning: library
> `/opt/poky/1.5.1/sysroots/armv6-vfp-poky-linux-gnueabi/usr/lib/
> libglib-2.0.la <http://libglib-2.0.la>' was moved.
> >> libtool: link: warning: library
> `/opt/poky/1.5.1/sysroots/armv6-vfp-poky-linux-gnueabi/usr/lib/libxml2.la<
> http://libxml2.la>' was moved.
> >> sed: can't read /usr/lib/libgstreamer-0.10.la <
> http://libgstreamer-0.10.la>: No such file or directory
> >> libtool: link: `=/usr/lib/libgstreamer-0.10.la <
> http://libgstreamer-0.10.la>' is not a valid libtool archive
> >> make[4]: *** [libgsttag-0.10.la <http://libgsttag-0.10.la>] Errore 1
> >>
> >> The library configured for cross compilation. I'm starting from the
> sources patched as in yocto.
> >>
> >> Any help appreciated!
> >
> > Why not do these changes/development using your bitbake/Yocto
> > build environment.  I've found that using quilt makes this quite
> > easy to do and helps manage the changes, patches, etc.  It will
> > also avoid the problem you are having which seems to stem from
> > trying to build outside the original environment.
>
> yeah. i would recommend that too. I find the externalsrc class quite
> handy for such things. E.g. you can keep your git tree separate during
> development, *but* still rely on OE to build, which I think gives you
> the best of both world...
>
> of course for your own applications, using the SDK makes sense.
>
> nicolas
> --
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