I'm trying to use an external library (wingraph) in a simple program. I have .o and .ppu files. I added the directory that contains them to the list of both "Other Unit Files" and "Include Files" paths under Project->Compiler Options. When building, I still get the error "Can't find unit wingraph used by [program]".
The library is Windows specific and I'm compiling on Windows, too.
What should I do to solve the problem?
Note that I don't have extensive knowledge about Pascal itself nor its tools. I'm just trying to quickly help someone start using the library.