Installing wiringpi ?

[Skywatch]

OK, so I installed gcc and reinstalled make: to see if it would work. Now I get a different issue.....

Terminal

xbian@cinema /home/wiringpi/wiringPi-5edd177 $ sudo ./build
[sudo] password for xbian:
wiringPi Build script
=====================


WiringPi Library
[UnInstall]
[Compile] wiringPi.c
[Compile] wiringSerial.c
[Compile] wiringShift.c
[Compile] piHiPri.c
[Compile] piThread.c
piThread.c:26:21: fatal error: pthread.h: No such file or directory
compilation terminated.
wiringSerial.c:23:19: fatal error: stdio.h: No such file or directory
compilation terminated.
piHiPri.c:27:19: fatal error: sched.h: No such file or directory
compilation terminated.
In file included from wiringShift.c:25:0:
/usr/lib/gcc/arm-linux-gnueabihf/4.6/include/stdint.h:3:26: fatal error: stdint.h: No such file or directory
compilation terminated.
wiringPi.c:55:19: fatal error: stdio.h: No such file or directory
compilation terminated.
make: *** [piHiPri.o] Error 1
make: *** Waiting for unfinished jobs....
make: *** [wiringSerial.o] Error 1
make: *** [wiringShift.o] Error 1
make: *** [piThread.o] Error 1
make: *** [wiringPi.o] Error 1

Make Failed...

This is new to me, it installed smoothly on Raspbian, but not on Xbian. Anyone have any advice on what to do next?