-ext

Tells the command-line tool the extension to apply to object files.

  -ext extension  

The value of extension is:

extension

The extension to apply to object files. Use these rules to specify the extension:

• Limited to a maximum length of 14-characters
• Extensions specified without a leading period ( extension) replace the source file's extension. For example, if extension == o, then source.cpp becomes source.o.
• Extensions specified with a leading period ( .extension) are appended to the object files name. For example, if extension == .o, then source.cpp becomes source.cpp.o.

This command is global. The default setting is no extension.