graphviz is using host includes/libs [hardknott], when tcl is installed on the host

[kranzo]

if build in crops(ubuntu-20.04) everything works properly

on my baremetal workstation (ubuntu-20.04) tlc8.6 is installed, resulting into QA-Error because host paths are included.

removing this patch leads to a error free compilation: https://github.com/openembedded/meta-openembedded/blob/9b23e1f76b76a43ea87e6364c23f29a21da81e61/meta-oe/recipes-graphics/graphviz/graphviz/0001-Set-use_tcl-to-be-empty-string-if-tcl-is-disabled.patch

so my question is why would i configure tcl if tcl is explicitly disabled? Because setting the string to "" is actually the default (use_tcl) config. I feel like the patch is not doing what is said in the commit-msg

[michalfita]

On Ubuntu 22.04 with Yocto Honister (brought in by PetaLinux v2022.1) graphviz was failing for me with:

/usr/lib//tcl8.6/tclConfig.sh: line 2: dpkg-architecture: command not found

Removing this patch as above issue mentions solves the problem for me.

The recipe in use is components/yocto/layers/meta-openembedded/meta-oe/recipes-graphics/graphviz/graphviz_2.44.1.bb.

Thanks, @kranzo.

[kraj]

@kranzo @michalfita thanks for report. honister is EOL but if you can reproduce it with master or kirkstone, that would be awesome. I am using archlinux host and has tclsh8.6 installed but I do not see this error on master branch

[Youras]

Somehow removing this patch, didn't solve the error. But here is a dirty fix:

The cause of the error is sourcing a tcl config script located in /usr/lib/tcl8.6/tclConfig.sh as the error prompt says

#! /bin/sh
. /usr/lib/`dpkg-architecture -qDEB_HOST_MULTIARCH`/tcl8.6/tclConfig.sh

Now dpkg-architecture -qDEB_HOST_MULTIARCH can be resolved by simply running this part in a console and replacing this command by the prompt of the console.
In my case the prompt is x86_64-linux-gnu. Thus the final file may look like this:

#! /bin/sh
. /usr/lib/`dpkg-architecture -qDEB_HOST_MULTIARCH`/tcl8.6/tclConfig.sh

Now building should work fluently :)