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Unable to build Opencascade 6.5.0

Anand R P's picture

While building OCT 6.5.0 , the following error shows up. Please help

Error 1 error TRK0005: Failed to locate: "CL.exe". The system cannot find the file specified. C:\OpenCASCADE6.5.0\samples\mfc\mfcsample\adm\win\vc8\TRACKER mfcsample