Unit not found: 'System.pas' or binary equivalents (DCU,DPU)

解决方法：

 

TOOLS->ENVIORENMENT OPTIONS->LIBRARY->LIBRARY PATH 里面空了的原因造成的

增加$(DELPHI)\Lib;$(DELPHI)\Bin;$(DELPHI)\Imports;$(DELPHI)\Projects\Bpl;C:\Program Files\Borland\Delphi7\Source\Vcl;$(DELPHI)\Rave5\Lib