So I've done this tutorial http://devkitpro.org/wiki/Getting_Started/devkitARM (including the last line at the bottom) and followed the README.md that comes with Ctrulib but still, whenever I try to compile one of the ctrulib examples it still gives me an error ( fatal error: 3ds.h: No such file or directory ), everything should be set up correctly and in the right place but that error keeps happening. (I'm using gcc to compile and am not using an IDE or anything, just a txt editor). Any ideas on what I'm doing wrong? Any help is appreciated.