Indicate that -D is the default value.
tree02a4cf2589f66aac5540dd76d018a2062ee6cb6e
-rw-r--r-- 61 .gitignore
-rw-r--r-- 2243 makefile
drwxr-xr-x - regtests
drwxr-xr-x - src
-rw-r--r-- 2098 style_checker.gpr