use the CC envvar if it is set
use the CC envvar if it is set

pratikshashroff/pcura,uus169/CuraEngine,alex1818/CuraEngine,Skeen/CuraJS-Engine,phonyphonecall/CuraEngine,totalretribution/CuraEngine,Ultimaker/CuraEngine,totalretribution/CuraEngine,jacobdai/CuraEngine-1,robotustra/curax,robotustra/curax,markwal/CuraEngine,derekhe/CuraEngine,patrick3coffee/CuraTinyG,alephobjects/CuraEngine,alex1818/CuraEngine,electrocbd/CuraEngine,ROBO3D/CuraEngine,totalretribution/CuraEngine,phonyphonecall/CuraEngine,mspark93/CuraEngine,fxtentacle/CuraEngine,jacobdai/CuraEngine-1,uus169/CuraEngine,foosel/CuraEngine,daid/CuraCutEngine,derekhe/CuraEngine,Jwis921/PersonalCuraEngine,electrocbd/CuraEngine,daid/CuraCutEngine,Ultimaker/CuraEngine,foosel/CuraEngine,markwal/CuraEngine,ROBO3D/CuraEngine,electrocbd/CuraEngine,jacobdai/CuraEngine-1,derekhe/CuraEngine,Intrinsically-Sublime/CuraEngine,ROBO3D/CuraEngine,alephobjects/CuraEngine,be3d/CuraEngine,patrick3coffee/CuraTinyG,phonyphonecall/CuraEngine,Skeen/CuraJS-Engine,markwal/CuraEngine,mspark93/CuraEngine,Jwis921/PersonalCuraEngine,Intrinsically-Sublime/CuraEngine,patrick3coffee/CuraTinyG,uus169/CuraEngine,Skeen/CuraJS-Engine,foosel/CuraEngine,be3d/CuraEngine,pratikshashroff/pcura,pratikshashroff/pcura,fxtentacle/CuraEngine,alephobjects/CuraEngine,fxtentacle/CuraEngine,mspark93/CuraEngine,robotustra/curax,alex1818/CuraEngine,be3d/CuraEngine,Jwis921/PersonalCuraEngine,Intrinsically-Sublime/CuraEngine