I tried to emerge rott, but I got error about no joystick support in libSDL. When I recompiled libsdl without "nojoystick" useflag, rott emerged perfectly.
Steps to Reproduce:
1. env USE="nojoystick" emerge libsdl
2. emerge rott
The compiling crashed.
From the ebuild:
"# if you disable audio/video/joystick and something breaks, you pick up the pieces"