Using winegcc from wine-devel currently requires setting the -L flag to be able
to link Winelib DLLs. E.g., it is required to include
-L/usr/lib64/wine/i386-unix when compiling and linking a 32-bit Winelib DLL.

Building Wine from source on my machine yields a winegcc which knows where
Wine's libraries and archives are located (making -L unnecessary). It was
hinted that specifying -L explicitly should not be needed on the Wine
developer's mailing list.

For context and reference, see the Wine Developer's mailing list thread [1]
where I have asked about this originally.

[1]:
https://list.winehq.org/mailman3/hyperkitty/list/wine-devel@winehq.org/thread/QTPFXY3CHG2TJUPBNE3CGXIKBFRH5CPH/