Find Perl libraries

This module finds if PERL is installed and determines where the include files and libraries are. It also determines what the name of the library is. This code sets the following variables:

PERLLIBS_FOUND    = True if perl.h & libperl were found
PERL_INCLUDE_PATH = path to where perl.h is found
PERL_LIBRARY      = path to libperl
PERL_EXECUTABLE   = full path to the perl binary

The minimum required version of Perl can be specified using the standard syntax, e.g. find_package(PerlLibs 6.0)

The following variables are also available if needed
(introduced after CMake 2.6.4)
PERL_SITESEARCH    = path to the sitesearch install dir
PERL_SITELIB       = path to the sitelib install directory
PERL_VENDORARCH    = path to the vendor arch install directory
PERL_VENDORLIB     = path to the vendor lib install directory
PERL_ARCHLIB       = path to the arch lib install directory
PERL_PRIVLIB       = path to the priv lib install directory
PERL_EXTRA_C_FLAGS = Compilation flags used to build perl