New comment by mnabid on void-packages repository

https://github.com/void-linux/void-packages/pull/20966#issuecomment-613399536

Comment:
@xtraeme cross build needs `gobject-introspection` to be built natively first. In that case, I get [errors](https://travis-ci.org/github/void-linux/void-packages/jobs/674637384#L4893):

```
install: cannot create regular file '/builddir/.xbps-gobject-introspection/wrappers/date': No such file or directory
=> ERROR: gobject-introspection-1.64.1_1: pre-configure_02-script-wrapper: 'install -p -m0755 ${f} ${XBPS_WRAPPERDIR}/${fname}' exited with 1
```
I had to create `$XBPS_WRAPPERDIR` in `post_extract()` to make things work. This seems to be because of this [commit](https://github.com/void-linux/void-packages/commit/4df0bcff7476a5b7805ef0c56d32f3ebdfb0ea7a).