undefined reference to `_snd_module_control_empty'

alsa-project/alsa-lib issue #168 was edited from madebr:

When linking `aserver` of libalsa 1.2.5.1, the following linking error appears: ``` /usr/bin/ld: ../src/.libs/libasound.a(control_symbols.o):(.data.rel+0x8): undefined reference to `_snd_module_control_empty' collect2: error: ld returned 1 exit status ```

libalsa is built as a static library.

Full log: [libalsa.log](https://github.com/alsa-project/alsa-lib/files/6951192/libalsa.log) (this is using the conan build recipe at https://github.com/conan-io/conan-center-index/tree/master/recipes/libalsa/a...)

Thanks

Issue URL : https://github.com/alsa-project/alsa-lib/issues/168 Repository URL: https://github.com/alsa-project/alsa-lib