New comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/pull/14372#issuecomment-808418650

Comment:
> gcc -Wall --std=gnu99 -DVERSION_STR=\"2.1.23\" -I. -Irntlib `pkg-config hidapi-hidraw --cflags` `pkg-config zlib --cflags`  -O3 -c ./rntlib/xferpak.c

It's using the wrong compiler, they probably hardcode gcc in their makefiles instead of using `$(CC)`.