[Slackbuilds-users] mkvtoolnix problem

[fsLeg]

Can confirm, just had the same error trying to recompile mkvtoolnix on 
my 15.0 with qt6 installed. Looking at output, it tries to link against 
qt6 instead of qt5, and the output of `./configure --help` confirms that 
by default mkvtoolnix only uses qt5 as a fallback if qt6 is not found.

You need to add `--disable-qt6` option to configure in the SlackBuild to 
force building against qt5. Just tried it and it compiled for me, 
although my system is non-standard as I have packages from testing/ 
installed, namely graphics-updates and binutils-gcc-glibs, so I'm not 
sure if it helps with a vanilla system.

On 3/8/26 22:30, Luveh Keraph wrote:
> For what it is worth, I was able to build it on a different 15.0 system. 
> A major difference is that Qt6 is not installed in this system.