Commands associated with this target are executed if make
can't find any description file entries or suffix rules with which to build a
requested target.
Ignore error codes. Same as the -i
option.
Files you specify for this target are not removed
when you send a signal (such as interrupt) that aborts make
,
or when a command line in your description file returns an error.
Execute commands but do not echo them. Same as the -s
option.
Suffixes associated with this target are meaningful in suffixes rules. If no suffixes are listed, the existing list of suffix rules are effectively "turned off."