test "$langpref" = '$(DESTDIR)NONE' && langpref='$(DESTDIR)'$ac_default_prefix
test "$langpref" = "NONE" && langpref=$ac_default_prefix
-PERL_MAKE_OPTIONS="PREFIX=$langpref LIB=$langpref/lib/perl/$PERL_VERSION"
+PERL_MAKE_OPTIONS="PREFIX=$langpref INSTALL_BASE= LIB=$langpref/lib/perl/$PERL_VERSION"
dnl pass additional perl options when generating Makefile from Makefile.PL
AC_ARG_ENABLE(perl-site-install,