directories, per suggestion from Robert Creager.
#-------------------------------------------------------
#
-# $Id: Makefile.PL,v 1.16 2000/06/10 18:01:56 petere Exp $
+# $Id: Makefile.PL,v 1.17 2001/03/06 22:07:09 tgl Exp $
#
# Copyright (c) 1997, 1998 Edmund Mergl
#
my %opts;
-if (! $ENV{POSTGRES_LIB} || ! $ENV{POSTGRES_INCLUDE}) {
+if (! -d $ENV{POSTGRES_LIB} || ! -d $ENV{POSTGRES_INCLUDE}) {
# Check that we actually are inside the Postgres source tree
if (! -d "../libpq") {