Linux - Really confused

Ok, I'm clearly still doing something wrong, I get an error when I try to rebuild or build modules

theres a popup window thing with:

Compile Error
27, from /home/mordax/BlitzMax/mod/pub.mod/stdc.mod/stdc.h:5, from /home/mordax/BlitzMax/mod/brl.mod/blitz.mod/blitz.h:5, from /home/mordax/BlitzMax/mod/brl.mod/blitz.mod/blitz_app.c:2:

and the output window contains the following:

Building Modules
Compiling:blitz_app.c
In file included from /usr/include/features.h:354,
from /usr/include/ctype.h:27,
from /home/mordax/BlitzMax/mod/pub.mod/stdc.mod/stdc.h:5,
from /home/mordax/BlitzMax/mod/brl.mod/blitz.mod/blitz.h:5,
from /home/mordax/BlitzMax/mod/brl.mod/blitz.mod/blitz_app.c:2:
/usr/include/gnu/stubs.h:7:27: gnu/stubs-32.h: No such file or directory
Build Error: failed to compile /home/mordax/BlitzMax/mod/brl.mod/blitz.mod/blitz_app.c
Process complete