New comment by blacklightpy on void-packages repository

https://github.com/void-linux/void-packages/issues/50068#issuecomment-2081215825

Comment:
Note that building for musl will require patching. One example was adding

```
# if BACKWARD_HAS_BACKTRACE_SYMBOL == 1
# include <dlfcn.h>
# endif
```
in `gz-tools/src/vendor/backward.hpp` and another file.

I fixed some more problems, but my storage ran out so I couldn't proceed.