or download this
----------------------------------
[njs@localhost ~/PGPLOT-2.20]$ perl Makefile.PL XDIR=/usr/lib64
...
Can't locate auto/PGPLOT/pgqinf.al in @INC (@INC contains: blib/lib bl
+ib/arch /Models/XSCORT/libraries /usr/lib64/perl5/site_perl/5.8.8/x86
+_64-linux-thread-multi /usr/lib64/perl5/site_perl/5.8.7/x86_64-linux-
+thread-multi /usr/lib64/perl5/site_perl/5.8.6/x86_64-linux-thread-mul
+ti /usr/lib64/perl5/site_perl/5.8.5/x86_64-linux-thread-multi /usr/li
+b/perl5/site_perl/5.8.8 /usr/lib/perl5/site_perl/5.8.7 /usr/lib/perl5
+/site_perl/5.8.6 /usr/lib/perl5/site_perl/5.8.5 /usr/lib/perl5/site_p
+erl /usr/lib64/perl5/vendor_perl/5.8.8/x86_64-linux-thread-multi /usr
+/lib64/perl5/vendor_perl/5.8.7/x86_64-linux-thread-multi /usr/lib64/p
+erl5/vendor_perl/5.8.6/x86_64-linux-thread-multi /usr/lib64/perl5/ven
+dor_perl/5.8.5/x86_64-linux-thread-multi /usr/lib/perl5/vendor_perl/5
+.8.8 /usr/lib/perl5/vendor_perl/5.8.7 /usr/lib/perl5/vendor_perl/5.8.
+6 /usr/lib/perl5/vendor_perl/5.8.5 /usr/lib/perl5/vendor_perl /usr/li
+b64/perl5/5.8.8/x86_64-linux-thread-multi /usr/lib/perl5/5.8.8 .) at
+test2.p line 9
make: *** [test_dynamic] Interrupt