| KEEP_EXTENSION | |
| -------------- | |
| Make the output file have the same extension as the source file. | |
| If this property is set then the file extension of the output file | |
| will be the same as that of the source file. Normally the output file | |
| extension is computed based on the language of the source file, for | |
| example .cxx will go to a .o extension. |