code: def createproject():
      
      os.chdir(build_dir)
      if windows_build:
          command = 'cmake -A {} -DPYTHON_EXECUTABLE:FILEPATH="{}" ../..'.format("win32" if bitness==32 else "x64", sys.executable)
          os.system(command)
          if bitness==64:
              for line in fileinput.input("_rhino3dm.vcxproj", inplace=1):
                  print(line.replace("WIN32;", "WIN64;"))
              for line in fileinput.input("opennurbs_static.vcxproj", inplace=1):
                  print(line.replace("WIN32;", "WIN64;"))
          #os.system("cmake --build . --config Release --target _rhino3dm")
      else:
          rv = os.system("cmake -DPYTHON_EXECUTABLE:FILEPATH={} ../..".format(sys.executable))
          if int(rv) > 0: sys.exit(1)
docs: compile for the platform we are running on