--- ./configure.orig	2014-10-02 15:22:28.000000000 +0300
+++ ./configure	2015-12-05 13:33:06.121150000 +0200
@@ -12940,7 +12940,7 @@
 $as_echo_n "checking where to look for the pam_pgsql.conf file... " >&6; }
 
 if test "${sysconfdir}" = '${prefix}/etc'; then :
-  sysconfdir=/etc
+  sysconfdir=${prefix}/etc
 fi
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${sysconfdir}" >&5