lib existence tests w/ mingw on windows

[theAeon]

Hi all-currently trying to get a mingw variant of a package working and noticed that on windows, rattler build searches for Library/lib/$package.lib but does not search for Library/lib/lib$package.dll.a, which is the standard import lib format for mingw. Should that be checked for along with the corresponding lib$package.dll?

[theAeon]

Hold on-its possible I'm stupid and this is because i forgot to pass the install prefix. Will reopen if actually the case.

[theAeon]

Okay, now that I've verified its actually installing the library, I can safely say that this does not work.

[wolfv]

Is the .a a static library?

[theAeon]

.dll.a is how mingw indicates an import library.

Sorta the equivalent of .lib, except .lib can be both. Static mingw libs are just .a.

[wolfv]

Would you be able to make a PR to add this extension on Windows?

[theAeon]

Probably. I'm not exactly experienced in rust (and by that I mean I've never actually used it) but it shouldn't be a particularly difficult tweak.