=over =item $COMPILING =item $^C X<$^C> X<$COMPILING> The current value of the flag associated with the B<-c> switch. Mainly of use with B<-MO=...> to allow code to alter its behavior when being compiled, such as for example to C at compile time rather than normal, deferred loading. Setting C<$^C = 1> is similar to calling C. This variable was added in Perl v5.6.0. =back