alsa-project/alsa-lib issue #157 was opened from jpalus: There is a mismatch between declaration: https://github.com/alsa-project/alsa-lib/blob/f4c061f349188c548497607efd4622c6e6a43270/src/control/control_symbols.c#L24 and actual definition: https://github.com/alsa-project/alsa-lib/blob/f4c061f349188c548497607efd4622c6e6a43270/src/control/control_empty.c#L33 resulting in undefined symbol in static library. Judging by convention used in other files I suppose the latter should be renamed to match declaration. Issue URL : https://github.com/alsa-project/alsa-lib/issues/157 Repository URL: https://github.com/alsa-project/alsa-lib