fixed cmake error with linux.
fixed cmake error with linux.

taschetto/gqe,gwowen/gqe,lukaszk159/gqe,lukaszk159/gqe,taschetto/gqe,Haellsigh/gqe,snowfox0x/gqe,taschetto/gqe,Haellsigh/gqe,iamcsharper/gqe,Haellsigh/gqe,gwowen/gqe,timadkins/gqe,timadkins/gqe,iamcsharper/gqe,tectronics/gqe,tectronics/gqe,GatorQue/gqe,GatorQue/gqe,iamcsharper/gqe,snowfox0x/gqe