On 5/14/2015 22:47, Mark Rivers wrote: > Additional information: > > - This is Cygwin 2.0.1, 32-bit on a Windows 7 64-bit machine. > > The "file" utility claims it is an archive file: > $ file ../../lib/cygwin-x86/PlxApi.lib > ../../lib/cygwin-x86/PlxApi.lib: current ar archive Try using gendef to generate a def file from the DLL and use dlltool to generate an import library from the new def file.