Ah. I asked because, googling for "winlib32" finds me a "winlib32.exe", which is apparently malware. That's not what you want.
I'm not sure which library you *are* looking for, though, Klod. If it's something you got with Golink, it may not be open source - Golink isn't, AFAIK. One I know *is* open source is vid's Fasmlib - despite the name, it works with Nasm, and has versions for Win32 and Linux. I don't think that's what you're looking for, though...
Seems to me Windows has more than one kind of "library". A .dll is a library, of course. Then there are libraries - sometimes named "win32.lib" - which don't seem to have any code in 'em, just function names and what .dll they're in(?)... That may be what you want. I don't know how they're made, or where you'd get source code for 'em (there's a "nagoa.asm" that might be it??? - just a list of "import foo foo.dll" - have to be assembled with "-f obj"). Then there are ordinary static libraries (like vid's library). I guess in general you'd look for source code somewhere near where you found the library...
Sorry I can't be more help. Keep askin' - *someone* must know...
Best,
Frank