New comment by q66 on void-packages repository

https://github.com/void-linux/void-packages/issues/28076#issuecomment-764575907

Comment:
this also seems easily reproducible in the crosscompiler:

```
$ cat test.go
package main
func main() {}
$ aarch64-linux-musl-gccgo test.go -o test
/usr/lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: /usr/lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/lib/../lib64/libgo.so: undefined reference to `getcontext'
/usr/lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: /usr/lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/lib/../lib64/libgo.so: undefined reference to `makecontext'
/usr/lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/bin/ld: /usr/lib/gcc/aarch64-linux-musl/10.2.1/../../../../aarch64-linux-musl/lib/../lib64/libgo.so: undefined reference to `setcontext'
collect2: error: ld returned 1 exit status
```