The KMix package contains a KF6 based Sound Mixer application.
This package is known to build and work properly using an LFS 12.3 platform.
Download (HTTP): https://download.kde.org/stable/release-service/24.12.2/src/kmix-24.12.2.tar.xz
Download MD5 sum: 056b742471fdd5669c359cd854ec494e
Download size: 1.1 MB
Estimated disk space required: 27 MB
Estimated build time: 0.2 SBU (using parallelism=4)
Install KMix by running the following commands:
mkdir build && cd build && cmake -D CMAKE_INSTALL_PREFIX=$KF6_PREFIX \ -D CMAKE_BUILD_TYPE=Release \ -D BUILD_TESTING=OFF \ -W no-dev .. && make
This package does not come with a test suite.
Now, as the root
user:
make install