Add a command line option to mark a port option independent
Given a port with OPTIONS_DEFINE= OPT1 OPT2
, panopticum will perform 4 builds:
OPT1=OFF OPT2=OFF
OPT1=OFF OPT2=ON
OPT1=ON OPT2=OFF
OPT1=ON OPT2=ON
Marking an option independent means that it doesn't affect the build system's behavior when other options are enabled/disabled.
For instance, running panopticum deps --independent OPT1
will result in following combinations:
OPT1=OFF OPT2=OFF
OPT1=ON OPT2=ON