Those options (-KPIC, etc.) are from the configuration that the perl binary had originally been built with. As -KPIC is only known to the Sun system compiler (and not gcc), it follows (apparently) that your perl had been built with the Sun system compiler.
While you could in theory try to match up the respective options (e.g. replace -KPIC with -fPIC, etc.) by perusing the man pages of both cc and gcc, there's
unfortunately no guarantee whatsoever that it'll eventually work... (i.e. that gcc will generate machine code that's 100% binary compatible with the code generated by cc).
The easy way out would be to either find an installation of a Sun(-Studio something) compiler, or to compile a new perl binary yourself from scratch using gcc.
