[cmake] Do not resolve the REALPATH too early.
[cmake] Do not resolve the REALPATH too early.

In some ccache setups we have the compiler soft link to ccache.

Eg. /usr/local/bin/g++ -> /usr/local/bin/ccache. If we resolve the link too
early we will take the wrong branch assuming the compiler was set as
CMAKE_CXX_COMPILER="ccache g++" and try to get the second token of the command.

zzxuanyuan/root-compressor-dummy,karies/root,gbitzes/root,gbitzes/root,Y--/root,buuck/root,zzxuanyuan/root,gbitzes/root,bbockelm/root,thomaskeck/root,olifre/root,georgtroska/root,root-mirror/root,agarciamontoro/root,abhinavmoudgil95/root,agarciamontoro/root,gbitzes/root,georgtroska/root,Y--/root,Y--/root,root-mirror/root,olifre/root,thomaskeck/root,olifre/root,olifre/root,zzxuanyuan/root-compressor-dummy,satyarth934/root,gbitzes/root,karies/root,mhuwiler/rootauto,gbitzes/root,karies/root,agarciamontoro/root,beniz/root,beniz/root,bbockelm/root,olifre/root,georgtroska/root,bbockelm/root,georgtroska/root,gganis/root,zzxuanyuan/root,gganis/root,georgtroska/root,pspe/root,davidlt/root,zzxuanyuan/root,thomaskeck/root,BerserkerTroll/root,root-mirror/root,BerserkerTroll/root,beniz/root,beniz/root,davidlt/root,simonpf/root,pspe/root,BerserkerTroll/root,pspe/root,mhuwiler/rootauto,pspe/root,thomaskeck/root,mhuwiler/rootauto,root-mirror/root,BerserkerTroll/root,buuck/root,gganis/root,simonpf/root,beniz/root,gganis/root,abhinavmoudgil95/root,satyarth934/root,bbockelm/root,pspe/root,abhinavmoudgil95/root,gganis/root,georgtroska/root,buuck/root,bbockelm/root,root-mirror/root,agarciamontoro/root,georgtroska/root,Y--/root,thomaskeck/root,karies/root,beniz/root,bbockelm/root,root-mirror/root,abhinavmoudgil95/root,satyarth934/root,agarciamontoro/root,zzxuanyuan/root,olifre/root,buuck/root,pspe/root,davidlt/root,zzxuanyuan/root,zzxuanyuan/root,karies/root,buuck/root,zzxuanyuan/root-compressor-dummy,beniz/root,beniz/root,bbockelm/root,zzxuanyuan/root-compressor-dummy,olifre/root,root-mirror/root,root-mirror/root,davidlt/root,mhuwiler/rootauto,thomaskeck/root,buuck/root,BerserkerTroll/root,abhinavmoudgil95/root,BerserkerTroll/root,karies/root,agarciamontoro/root,abhinavmoudgil95/root,Y--/root,mhuwiler/rootauto,simonpf/root,buuck/root,georgtroska/root,mhuwiler/rootauto,simonpf/root,zzxuanyuan/root-compressor-dummy,pspe/root,karies/root,zzxuanyuan/root,gganis/root,mhuwiler/rootauto,thomaskeck/root,beniz/root,karies/root,zzxuanyuan/root,gganis/root,simonpf/root,mhuwiler/rootauto,Y--/root,georgtroska/root,zzxuanyuan/root-compressor-dummy,Y--/root,satyarth934/root,buuck/root,simonpf/root,simonpf/root,mhuwiler/rootauto,davidlt/root,abhinavmoudgil95/root,simonpf/root,gbitzes/root,satyarth934/root,zzxuanyuan/root-compressor-dummy,pspe/root,abhinavmoudgil95/root,gbitzes/root,georgtroska/root,zzxuanyuan/root,buuck/root,abhinavmoudgil95/root,gbitzes/root,zzxuanyuan/root,simonpf/root,georgtroska/root,zzxuanyuan/root-compressor-dummy,BerserkerTroll/root,davidlt/root,thomaskeck/root,agarciamontoro/root,BerserkerTroll/root,karies/root,pspe/root,davidlt/root,Y--/root,BerserkerTroll/root,pspe/root,Y--/root,davidlt/root,mhuwiler/rootauto,bbockelm/root,gganis/root,BerserkerTroll/root,thomaskeck/root,agarciamontoro/root,satyarth934/root,gganis/root,gbitzes/root,BerserkerTroll/root,abhinavmoudgil95/root,simonpf/root,zzxuanyuan/root,gganis/root,abhinavmoudgil95/root,simonpf/root,agarciamontoro/root,olifre/root,zzxuanyuan/root-compressor-dummy,satyarth934/root,davidlt/root,satyarth934/root,gbitzes/root,bbockelm/root,agarciamontoro/root,thomaskeck/root,satyarth934/root,zzxuanyuan/root-compressor-dummy,root-mirror/root,agarciamontoro/root,buuck/root,davidlt/root,root-mirror/root,satyarth934/root,davidlt/root,zzxuanyuan/root,beniz/root,olifre/root,pspe/root,Y--/root,bbockelm/root,olifre/root,gganis/root,karies/root,satyarth934/root,beniz/root,mhuwiler/rootauto,zzxuanyuan/root-compressor-dummy,Y--/root,bbockelm/root,buuck/root,olifre/root,karies/root,root-mirror/root