I am trying to build Lazarus with the latest fpc. I followed the tutorials and successfully built the original Lazarus from source. Now I'm trying to install a component in the IDE, but I get an error in lazarus.pp; Can't find unit INTERFACES. Paths set correctly. I am using a win32 port of GNU-make instead of fpc make, because I have Lazarus installed on d partition. From outside of Lazarus, I am able to 'make' it (with both makes, fpc and GNU), but my component is not installed in the IDE. Can anyone help me, I really have no clue what to do. I probably wouldn't bother this group so much, but I can't find any documentation on issues like this.