fix for CMake policy that’s only available for CMake 3.x.
fix for CMake policy that’s only available for CMake 3.x.
Twinklebear/OSPRay,Twinklebear/OSPRay,wilsonCernWq/ospray,MengjiaoH/ospray,favreau/OSPRay,ospray/OSPRay,favreau/OSPRay,wilsonCernWq/ospray,favreau/OSPRay,Twinklebear/OSPRay,Twinklebear/OSPRay,favreau/OSPRay,wilsonCernWq/ospray,ospray/OSPRay,MengjiaoH/ospray,MengjiaoH/ospray,ospray/OSPRay,MengjiaoH/ospray,MengjiaoH/ospray,ospray/OSPRay