[yocto] Layer input

Thu Jun 27 06:34:17 PDT 2013

Jerrod,

I looked at the various folder names in the meta-intel layer, which has many BSP layers.  After looking at these, you are right in that <name> could probably better described a <recipe> since all the *.bb and *.bbappend files have as a root name the recipe.  So I changed them.  The specifically-named recipes-* directories follow the BSP layout guidelines described in the BSP manual.  Granted, not all BSP layers have them all.  One option is to just show them in the figure as recipes-* and then describe them in the supporting text as possibly being recipes-core, recipes-kernel, recipes-graphics, and recipes-bsp.  You can run yocto-layer after you source oe-init-build-env script.  The script itself lives in poky/scripts.

Finally, bblayers.conf appears as part of the user configuration figure.  You have a valid point about bblayers.conf though because it does directly affect BitBake finding the layers, which are the point of this particular diagram.  I altered the figure to include an abbreviated version of the "Build Directory" so that it just shows conf/bblayers.conf.  The supporting text around the figure can describe the relationship and also note that a different figure breaks out the user configuration input in more detail.

Scott

From: Jerrod Peach [mailto:peachj at lexmark.com]
Sent: Thursday, June 27, 2013 5:56 AM
To: Rifenbark, Scott M
Cc: Bruce Ashfield; yocto at yoctoproject.org; Paul Eggleton
Subject: Re: [yocto] Layer input

Scott,

Getting closer to what I was thinking, but I still have a couple questions, primarily regarding the BSP layer.

  *   There are still a few references to <name>.  Shouldn't those also be <recipe>?
  *   I'm still confused by the presence of all the specifically-named recipes-* directories.  I tried running yocto-layer and I didn't get any of those present.  I couldn't find the bsp-layer tool, but I'll grant I didn't search really hard.  (I only checked out master of poky and searched around a bit.)  What's making you want to put them all in this diagram?
Also, it strikes me that bblayers.conf needs to show up in this diagram somewhere, I think, since it controls what layers bitbake sees.

Kind regards,

Jerrod

On Thu, Jun 27, 2013 at 3:41 AM, Rifenbark, Scott M <scott.m.rifenbark at intel.com<mailto:scott.m.rifenbark at intel.com>> wrote:
Hi,

I have tweaked this figure some based on Bruce and Jerrod's input.  To help me figure out some of the basics, I ran the yocto-layer and bsp-layer scripts to create a general and BSP layer, respectively.  Please look over the contents of these layers and comment.  General comments on the whole concept of how I am presenting the layers are welcome along with any other observations.

Thanks,
Scott

From: Jerrod Peach [mailto:peachj at lexmark.com<mailto:peachj at lexmark.com>]
Sent: Tuesday, June 25, 2013 11:07 AM

To: Rifenbark, Scott M
Cc: yocto at yoctoproject.org<mailto:yocto at yoctoproject.org>; Paul Eggleton
Subject: Re: [yocto] Layer input

Scott,

  *   Distro Layer

     *   I'm unclear on what <name> is.  Is that supposed to be <distro>?  <recipe>?  It probably shouldn't just be <name>, should it?

  *   Software Layer

     *   Should COPYING.MIT just be COPYING to be more generically applicable?
     *   conf/<layer_name>.conf should be just layer.conf, right?

  *   BSP Layer

     *   COPYING.MIT file again.
     *   machine/<name>.conf should probably be machine/<machine*>.conf.  You can probably drop the non-asterisk version, since an asterisk implies, "There might be more stuff, there might not."
     *   recipes-bsp/formfactor shouldn't also have another formfactor directory, should it?  Or is the "files" directory in 1.4 replaced with another formfactor-named directory?  Also, <name> should be <machine> again.
     *   What's everything from recipes-core down?  I can buy recipes-kernel being in a bsp, but are any other directories really necessary?
Kind regards,

Jerrod

On Tue, Jun 25, 2013 at 8:35 AM, Rifenbark, Scott M <scott.m.rifenbark at intel.com<mailto:scott.m.rifenbark at intel.com>> wrote:
Hi,

This next illustration attempting to dive deeper in the YP Development Process takes the remaining left-side input from that figure in the Quick Start (metadata, Machine, and Policy).  Note that when the original figure was created that appears in the QS, the layer stuff had not yet been established.  This figure I am attaching is rough.  I am unsure as to the contents of these layers.  Right now it is detailed but with generic names.  The idea is that individual layers are preferred to do things such as provide software, configure policy, and configure machines.  I am including some notes at the bottom of the figure that would not be part of the figure but might help to get across what I am trying to accomplish here.

Any suggestions and feedback is really appreciated.

Thanks,
Scott

Scott Rifenbark
Intel Corporation
Yocto Project Documentation
503.712.2702<tel:503.712.2702>
503.341.0418<tel:503.341.0418> (cell)

_______________________________________________
yocto mailing list
yocto at yoctoproject.org<mailto:yocto at yoctoproject.org>
https://lists.yoctoproject.org/listinfo/yocto

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.yoctoproject.org/pipermail/yocto/attachments/20130627/0fad55fa/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: layer-input.png
Type: image/png
Size: 80436 bytes
Desc: layer-input.png
URL: <http://lists.yoctoproject.org/pipermail/yocto/attachments/20130627/0fad55fa/attachment.png>