Problems adding cppzmq to Target-SDK

Problems adding cppzmq to Target-SDK

[Lukas Weiß]

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Hi together,
i am just trying to add *cppzmq* to my Target-SDK (from meta-openembedded Layer). To do that, ive added them do RDEPENDS of my App-Recipe:

RDEPENDS : ${ PN } += "cppzmq"

This does neither work for target nor for target-sdk:

> 
> ERROR: Nothing RPROVIDES 'cppzmq' (but calc-server_latest.bb RDEPENDS on
> or otherwise requires it)
> 

Adding *cppzmq-dev* works for Target-SDK, but not for Target-Build:

> 
> ERROR: calc-server-latest-r0 do_package_qa: QA Issue: calc-server rdepends
> on cppzmq-dev [dev-deps]
> 

I fixed this by adding the *cppzmq-dev* to RDEPENDS of packagegroup-core-standalone-sdk-target to add the dependency only direct to Target-SDK, but thats a bad hack.

Any ideas how to fix this? As far as i know cppzmq is a Header-Only Project...

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Re: [oe] Problems adding cppzmq to Target-SDK

[Khem Raj]

On Wed, Mar 5, 2025 at 5:56 AM Lukas Weiß via lists.openembedded.org
<lukas.weiss=janitza.de@lists.openembedded.org> wrote:
>
> Hi together,
> i am just trying to add cppzmq to my Target-SDK (from meta-openembedded Layer). To do that, ive added them do RDEPENDS of my App-Recipe:
>
> RDEPENDS:${PN} += "cppzmq"
>

Its a dev headers package and only generated dev output package so
rdep on PN is going to fail because no such package is generated.
Add DEPENDS += "cppzmq" to your app recipe this hopefully helps with
target build.

> This does neither work for target nor for target-sdk:
>
> ERROR: Nothing RPROVIDES 'cppzmq' (but calc-server_latest.bb RDEPENDS on or otherwise requires it)
>
>
> Adding cppzmq-dev works for Target-SDK, but not for Target-Build:
>
> ERROR: calc-server-latest-r0 do_package_qa: QA Issue: calc-server rdepends on cppzmq-dev [dev-deps]
>
>
> I fixed this by adding the cppzmq-dev to RDEPENDS of packagegroup-core-standalone-sdk-target to add the dependency only direct to Target-SDK, but thats a bad hack.
>
> Any ideas how to fix this? As far as i know cppzmq is a Header-Only Project...
>
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Re: Problems adding cppzmq to Target-SDK

[Lukas Weiß]

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I found a solution, this is a problem in recipe. Patch is attached.

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diff --git a/meta-oe/recipes-connectivity/zeromq/cppzmq_4.10.0.bb b/meta-oe/recipes-connectivity/zeromq/cppzmq_4.10.0.bb
index dcea339dfd..d5732e041e 100644
--- a/meta-oe/recipes-connectivity/zeromq/cppzmq_4.10.0.bb
+++ b/meta-oe/recipes-connectivity/zeromq/cppzmq_4.10.0.bb
@@ -14,7 +14,7 @@ inherit cmake
 
 EXTRA_OECMAKE = "-DCPPZMQ_BUILD_TESTS=OFF"
 
-PACKAGES = "${PN}-dev"
+ALLOW_EMPTY:${PN} = "1"
 
 RDEPENDS:${PN}-dev = "zeromq-dev zeromq-staticdev"
 DEV_PKG_DEPENDENCY = ""

Re: [oe] Problems adding cppzmq to Target-SDK

[Khem Raj]

On Fri, Mar 14, 2025 at 7:47 AM Lukas Weiß via lists.openembedded.org
<lukas.weiss=janitza.de@lists.openembedded.org> wrote:
>
> I found a solution, this is a problem in recipe. Patch is attached.
>

If we allow empty main package then do we still need

RDEPENDS:${PN}-dev = "zeromq-dev zeromq-staticdev"
DEV_PKG_DEPENDENCY = ""

can you check your usecase without these settings?

>
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AW: [oe] Problems adding cppzmq to Target-SDK

[Lukas Weiß]

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You are right, this can probably be removed now. Ive tested it in my environment and it seems to work. Iam just not shure, if the dependency to zero-mq-dev is still included, since this is direcly needed by cppzmq-dev. My Target-SDK shows up both of them, so probably yes.

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________________________________
Von: Khem Raj <raj.khem@gmail.com>
Gesendet: Freitag, 14. März 2025 18:59
An: Lukas Weiß <lukas.weiss@janitza.de>
Cc: openembedded-devel@lists.openembedded.org <openembedded-devel@lists.openembedded.org>
Betreff: Re: [oe] Problems adding cppzmq to Target-SDK

On Fri, Mar 14, 2025 at 7:47 AM Lukas Weiß via lists.openembedded.org
<lukas.weiss=janitza.de@lists.openembedded.org> wrote:
>
> I found a solution, this is a problem in recipe. Patch is attached.
>

If we allow empty main package then do we still need

RDEPENDS:${PN}-dev = "zeromq-dev zeromq-staticdev"
DEV_PKG_DEPENDENCY = ""

can you check your usecase without these settings?

>
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