*** No rule to make target error xc8

Interesting problem. I have a few functions using acos asin sqrt etc so I used #include <math.h>
and it compiled fine. However when I go to "Make and Program device" I get the error

make[2]: *** No rule to make target `x86)/Microchip/xc8/v1.01/include/math.h)', needed by `build/default/production/Servo_main.p1'. Stop.

Using MPLABX v1.30 and XC8 compiler v1.01

Changed compiler to C18, works fine now.