[Nero_3D]

It is enough to include the file you want

PHP код:

#include <rotation_extra> 


But the strange thing is the error, is it the only one?
If it failed to include the main file "rotation.inc" (due to include guard conflicts) you would get way more errors, so I guess that isn't the case but why is RotatePoint missing than?
Another thing is why do you only get it only once if RotatePoint is used twice in rotation_extra_object.inc, what did you do?

Also did you try to compile it in an empty file?, something like

PHP код:

#include <a_samp>
#include <rotation_extra>
main() {} 


If that does compiles without errors than it must be an interferences with other scripts