diff -Naur postgresql-9.0.4.orig/configure postgresql-9.0.4/configure
--- postgresql-9.0.4.orig/configure	2011-04-14 23:15:53.000000000 -0400
+++ postgresql-9.0.4/configure	2011-08-23 20:05:37.587333748 -0400
@@ -6914,7 +6914,7 @@
 $as_echo "$perl_archlibexp" >&6; }
 { $as_echo "$as_me:$LINENO: checking for Perl privlibexp" >&5
 $as_echo_n "checking for Perl privlibexp... " >&6; }
-perl_privlibexp=`$PERL -MConfig -e 'print $Config{privlibexp}'`
+perl_privlibexp=`$PERL -MExtUtils::ParseXS -e '$p = $INC{"ExtUtils/ParseXS.pm"}; $p =~ s|(.*)/ExtUtils/ParseXS.pm|$1|; print $p`
 { $as_echo "$as_me:$LINENO: result: $perl_privlibexp" >&5
 $as_echo "$perl_privlibexp" >&6; }
 { $as_echo "$as_me:$LINENO: checking for Perl useshrplib" >&5