[meta-freescale] problems adding python to build
otavio at ossystems.com.br
Thu Dec 20 10:39:22 PST 2012
On Thu, Dec 20, 2012 at 4:31 PM, David Van Beveren <vbdavid at gmail.com> wrote:
> I have been exploring yocto for the Freescale ARM boards (I have an
> i.MX28-evk) for about 2 weeks now. I understand all of the basics but have
> not had much success customizing the images.
> I am using the danny release.
> I would like to build an image that contains:
> python and pyopenssl
> a local gnu toolchain on the target
> gdb / gdbserver
> NFS server and client
> the Google API python client library (typically installed with
> My own python program
> My own C++ apps
> I have had success configuring the kernel and busybox already using bitbake.
> (I have turned on IPv6, NFSserver, ftp, etc)
> I am able to build the standard images (e.g. core-image-minimal, -lsb, and
> I have had some problems experimenting with hob. However, this seems to
> just add another layer, and I am just as comfortable doing this by hand.
> My approach has been to create a copy of the .bb file for the image, in the
> same folder as the original, (poky/meta/recipies-core/images) then edit
> that file.
> Side Q: Is this the best approach? Should I be adding files to the
> sources folder or should I be keeping them outside?
It is not; the best is to have your own layer with your recipes and
images. This easy the maintainence and upgrade for future releases of
> Here is one cut at my image file, my-image-lighttpd, between the dashes:
> require core-image-minimal.bb
> IMAGE_INSTALL += "python_2.7.3 lighttpd"
No version, use python only.
> I get a message in response that 'nothing PROVIDES python_2.7.3' This is
> confusing to me because I can see such a recipe:
You should look at Yocto documentation to learn more about this but
in short terms you never install a specific version of a recipe but
what it provides. In this case python.
> NOTE that when I remove the python entry and just keep the lighttpd entry it
> works fine.
> The Yocto docs talk about a variety of approaches to customizing images,
> from editing local.conf to creating a new layer. I am interested in the
> simplest approach that does not run against the grain of what the designer
> Once I am able to add the Python packages I think I will understand enough
> to move on.
Use a layer; it makes easier for you to improve it later. local.conf
is nice for experimentation and tests, not for products.
> I believe that the fsl/yocto/poky/oe pltform is the bet embedded build
> platform I have seen. I have used buildroot in the past and when I started
> working on this Freescale board I dove in to ltib but quickly thought about
> moving to either OE or buildroot, when I discovered Yocto and your group. It
> is a very impressive open source project, and I am looking forward to
> contributing where I can.
I am very happy to know it. That's the goal. :-)
Otavio Salvador O.S. Systems
E-mail: otavio at ossystems.com.br http://www.ossystems.com.br
Mobile: +55 53 9981-7854 http://projetos.ossystems.com.br
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