The format of the import libraries of lcc-win32 differs from the Microsoft format. You can convert an import library by using this option in the "Utils" menu of Wedit.
In the dialog box you should enter the name of the source library and the name of the output library (the one with the lcc-win32 format).
This process is executed by the utility pedump. The editor starts
pedump /exp <input lib>
This produces an ascii list of exports in the same format as the .exp files that are stored in your \lcc\buildlib directory. This list is passed then to the "buildlib" utility that builds a library to the lcc-win32 format that will be understood by the linker lcclnk. This is equivalent to
buildlib input.exp output.lib
It is better to store the library in the \lcc\lib directory to avoid path problems.
Note that all this is for import libraries, i.e. libraries that allow you to link with a DLL. For other types of libraries this process will not work, because in general, it is not possible to run object code compiled for another run time environment and with other run time structure.