BEGIN {    if ($ENV{PERL_CORE}) {	chdir 't' if -d 't';	@INC = ("../lib", "lib/compress");    }}use lib qw(t t/compress);use strict ;use warnings ;use Test::More ;BEGIN {     # use Test::NoWarnings, if available    my $extra = 0 ;    $extra = 1        if eval { require Test::NoWarnings ;  import Test::NoWarnings; 1 };    plan tests => 2 + $extra ;    use_ok('Compress::Raw::Zlib', 2) ; }# Check zlib_version and ZLIB_VERSION are the same.my $zlib_h = ZLIB_VERSION ;my $libz   = Compress::Raw::Zlib::zlib_version;is($zlib_h, $libz, "ZLIB_VERSION ($zlib_h) matches Compress::Raw::Zlib::zlib_version")    or diag <<EOM;The version of zlib.h does not match the version of libz You have zlib.h version $zlib_h     and libz   version $libz You probably have two versions of zlib installed on your system.Try removing the one you don't want to use and rebuild.EOM