Update: I managed to fool myself but not broquiant. The -MStrict below is completely useless as there is no module Strict, only strict. So the following will only work without stricture. Which is one reason why there is probably a better way to do this.

I wish there was a switch to enable stricture!

You could do

P:\test>perl -wMStrict -le"sub func{ print 'Hello world'; } my $funcna
+me='func'; &$funcname;"
Hello world

P:\test>perl -wMStrict -le"sub func{ print 'Hello world'; } &{ $ARGV[0
+] };" func
Hello world
[download]

but there are probably better ways of achieving your aims, but it would requires a better description of those aims.