New comment by biopsin on void-packages repository

https://github.com/void-linux/void-packages/issues/28140#issuecomment-766361560

Comment:
Tested build against v1.8.6
so far fails to build without https://github.com/DeaDBeeF-Player/mp4p (submodule)

```
Making all in external
make[2]: Entering directory '/builddir/deadbeef-1.8.6/external'
make[2]: *** No rule to make target 'mp4p/src/mp4p.c', needed by 'mp4p/src/libmp4p_a-mp4p.o'.  Stop.

```