New comment by 0x5c on void-packages repository

https://github.com/void-linux/void-packages/pull/47845#issuecomment-1864030201

Comment:
Inventory of failure:
- cross archs: build tool is compiled for target [libunicode]
  - `build_helper=qemu` is made of :magic_wand: *Magic* :sparkles: 
- ~~i686 (glibc)~~ 32bit archs: c++ intrinsics sadness [libunicode]
- x86_64-musl (all-musl?): pthread sadness [contour]
- aarch64-musl: ???
  ```
  To use a cross-compiled Qt, please set the QT_HOST_PATH_CMAKE_DIR cache
  variable to the location of your host Qt installation lib/cmake directory.
  ```