We use host perl while building target perl modules. When some of the
prebuilt perl modules such as scalar::util are used in the build process
directly or indirectly, perl needs to load the arch specific .so library
file. If perl can not find the .so library files, then perl
tries to use the target pm files which ends up in circular perl module
depedancy causing build time perl invocation to fail.
Adding this new parameter viz EXTRA_PERLFLAGS to cpan.bbclass allows perl
module recipes to specify the location of such host .so files for hostperl,
so that build time invocation of perl does not fail.
Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>
