The KMix package contains a KF5 based Sound Mixer application.
This package is known to build and work properly using an LFS 12.1 platform.
Download (HTTP): https://download.kde.org/stable/release-service/23.08.5/src/kmix-23.08.5.tar.xz
Download MD5 sum: a58f84cfc3aa7aeb1745ef0889788dc9
Download size: 1.2 MB
Estimated disk space required: 20 MB
Estimated build time: 0.2 SBU (using parallelism=4)
Install KMix by running the following commands:
mkdir build && cd build && cmake -DCMAKE_INSTALL_PREFIX=$KF5_PREFIX \ -DCMAKE_BUILD_TYPE=Release \ -DBUILD_TESTING=OFF \ -Wno-dev .. && make
This package does not come with a test suite.
Now, as the root
user:
make install