Hi,


Hacking the recipe according to:


martin@dell:~/work/z7000-distro-zcu102/meta-openembedded$ git diff
diff --git a/meta-oe/recipes-connectivity/zeromq/cppzmq_git.bb b/meta-oe/recipes-connectivity/zeromq/cppzmq_git.bb
index a64745c94..aba1d6edb 100644
--- a/meta-oe/recipes-connectivity/zeromq/cppzmq_git.bb
+++ b/meta-oe/recipes-connectivity/zeromq/cppzmq_git.bb
@@ -13,9 +13,11 @@ S = "${WORKDIR}/git"
 
 do_install () {
         install -d ${D}/usr/include
+        install -d ${D}/etc
         install -m 0755 ${S}/zmq.hpp ${D}/usr/include/
+        install -m 0755 ${S}/zmq.hpp ${D}/etc
 }
 
-PACKAGES = "${PN}-dev"
+PACKAGES = "${PN}-dev ${PN}"
 
RDEPENDS_${PN}-dev = "zeromq-dev"

triggers both ${PN}-dev and ${PN} variants to be packaged and included by the image. Leaving out the installation into /etc causes ${PN} package not to be generated and the image generation does not pick up the ${PN}-dev variant.


In essence, it looks like image generation disregards recipes residing exclusively in the ${PN}-dev variant - question is whether this is intended or not?


Br,

Martin


From: Martin Siegumfeldt
Sent: Tuesday, May 1, 2018 8:49:17 PM
To: Andrea Galbusera
Cc: yocto@yoctoproject.org
Subject: Re: [yocto] Recipe availability through eSDK (cppzmq)
 

Hi Andrea,



From: Andrea Galbusera <gizero@gmail.com>
Sent: Tuesday, May 1, 2018 16:06
To: Martin Siegumfeldt
Cc: yocto@yoctoproject.org
Subject: Re: [yocto] Recipe availability through eSDK (cppzmq)
 
Hi Martin,

On Mon, Apr 30, 2018 at 9:10 PM, Martin Siegumfeldt <mns@gomspace.com> wrote:
> Hi,
>
> I am trying to build cppzmq through a Yocto (Rocko) generated eSDK. The search function does not return anything, despite the recipe being available through local recipe:
>
> martin@dell:~/gomspace_sdk$ ls layers/meta-openembedded/meta-oe/recipes-connectivity/zeromq/
> cppzmq_git.bb  files  zeromq_4.1.6.bb
>
> I assume this is expected since it does not come prebuilt as part of the eSDK - is this correct understood?
>
> Fortunately, 'devtool modify/build/package' generates the package - unfortunately it is not included in the subsequent image generation:
>
> martin@dell:~/gomspace_sdk$ devtool package cppzmq
> NOTE: Starting bitbake server...
> NOTE: Starting bitbake server...
> WARNING: Host distribution "ubuntu-17.10" has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.
> Loading cache: 100% |########################################################################################################################################################################| Time: 0:00:03
> Loaded 2773 entries from dependency cache.
> Parsing recipes: 100% |######################################################################################################################################################################| Time: 0:00:01
> Parsing of 1968 .bb files complete (1960 cached, 8 parsed). 2780 targets, 305 skipped, 11 masked, 0 errors.
> NOTE: Resolving any missing task queue dependencies
> Initialising tasks: 100% |###################################################################################################################################################################| Time: 0:00:00
> Checking sstate mirror object availability: 100% |###########################################################################################################################################| Time: 0:00:00
> NOTE: Executing SetScene Tasks
> NOTE: Executing RunQueue Tasks
> NOTE: Tasks Summary: Attempted 492 tasks of which 491 didn't need to be rerun and all succeeded.
>
> Summary: There was 1 WARNING message shown.
> NOTE: Your packages are in /home/martin/gomspace_sdk/tmp/deploy/ipk
>
> martin@dell:~/gomspace_sdk$ devtool build-image
> NOTE: Starting bitbake server...
> WARNING: Host distribution "ubuntu-17.10" has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.
> Loading cache: 100% |########################################################################################################################################################################| Time: 0:00:00
> Loaded 2773 entries from dependency cache.
> Parsing recipes: 100% |######################################################################################################################################################################| Time: 0:00:02
> Parsing of 1968 .bb files complete (1960 cached, 8 parsed). 2780 targets, 305 skipped, 11 masked, 0 errors.
>
> Summary: There was 1 WARNING message shown.
> WARNING: Skipping recipe cppzmq as it doesn't produce a package with the same name

This is the suspicious bit... If you look at the recipe, you'll notice
it's re-defining the PACKAGES variable. Then, it's not generating a
package called 'cppzmq', but only one named 'cppzmq-dev'. That said,
I'm not sure why you'd want to add a package which only provides
development headers to your target image...

I understand your doubt here. The header file installed is a wrapper around zeromq and thus DEPENDS/RDEPENDS on this library. zeromq is included in the image, for which the SDK is generated, hence I would expect this to be a valid use case?

Anyhow, I realized that the recipe does not even work in a BB environment - the following is encountered for an image including the package:

ERROR: Nothing RPROVIDES 'cppzmq' (but /home/martin/work/z7000-distro-zcu102/poky/meta/recipes-core/images/core-image-minimal.bb RDEPENDS on or otherwise requires it)
NOTE: Runtime target 'cppzmq' is unbuildable, removing...
Missing or unbuildable dependency chain was: ['cppzmq']
ERROR: Required build target 'core-image-minimal' has no buildable providers.
Missing or unbuildable dependency chain was: ['core-image-minimal', 'cppzmq']

I wonder why this occurs when the recipe is indeed present:

martin@dell:~/work/z7000-distro-zcu102/build$ bitbake-layers  show-recipes cppzmq
NOTE: Starting bitbake server...
WARNING: Host distribution "ubuntu-17.10" has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.
Loading cache: 100% |########################################################################################################################################################################| Time: 0:00:00
Loaded 2773 entries from dependency cache.
Parsing recipes: 100% |######################################################################################################################################################################| Time: 0:00:01
Parsing of 1968 .bb files complete (1961 cached, 7 parsed). 2780 targets, 305 skipped, 11 masked, 0 errors.

Summary: There was 1 WARNING message shown.
=== Matching recipes: ===
cppzmq:
  meta-oe              4.1.5+gitAUTOINC+68a7b09cfc

Br,
Martin

>
> Inspecting the manifest file confirms that the package is not installed - any idea why not? I also tried installing though sdk-install:
>
> martin@dell:~/gomspace_sdk$ devtool sdk-install -s cppzmq
> NOTE: Starting bitbake server...
> WARNING: Host distribution "ubuntu-17.10" has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.
> Loading cache: 100% |########################################################################################################################################################################| Time: 0:00:00
> Loaded 2773 entries from dependency cache.
> Parsing recipes: 100% |######################################################################################################################################################################| Time: 0:00:02
> Parsing of 1968 .bb files complete (1961 cached, 7 parsed). 2780 targets, 305 skipped, 11 masked, 0 errors.
>
> Summary: There was 1 WARNING message shown.
> NOTE: Installing cppzmq...
> WARNING: Host distribution "ubuntu-17.10" has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.
> Loading cache: 100% |########################################################################################################################################################################| Time: 0:00:03
> Loaded 2773 entries from dependency cache.
> Parsing recipes: 100% |######################################################################################################################################################################| Time: 0:00:01
> Parsing of 1968 .bb files complete (1961 cached, 7 parsed). 2780 targets, 305 skipped, 11 masked, 0 errors.
> NOTE: Resolving any missing task queue dependencies
> Initialising tasks: 100% |###################################################################################################################################################################| Time: 0:00:00
> Checking sstate mirror object availability: 100% |###########################################################################################################################################| Time: 0:00:00
> NOTE: Executing SetScene Tasks
> NOTE: Executing RunQueue Tasks
> NOTE: Tasks Summary: Attempted 487 tasks of which 477 didn't need to be rerun and all succeeded.
>
> Summary: There was 1 WARNING message shown.
> NOTE: Successfully installed cppzmq
>
> Which also does not pick up the package upon image building:
>
> martin@dell:~/gomspace_sdk$ IMAGE_INSTALL_append="cppzmq" devtool build-image
> NOTE: Starting bitbake server...
> WARNING: Host distribution "ubuntu-17.10" has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.
> Loading cache: 100% |########################################################################################################################################################################| Time: 0:00:00
> Loaded 2773 entries from dependency cache.
> Parsing recipes: 100% |######################################################################################################################################################################| Time: 0:00:02
> Parsing of 1968 .bb files complete (1961 cached, 7 parsed). 2780 targets, 305 skipped, 11 masked, 0 errors.
>
> Summary: There was 1 WARNING message shown.
> WARNING: No packages to add, building image nanocom-sdr-image unmodified
>
> What am I missing here?
>
> Thanks,
> Martin
> --
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