diff -up Firebird-2.1.4.18393-0/configure.in.s390x Firebird-2.1.4.18393-0/configure.in
--- Firebird-2.1.4.18393-0/configure.in.s390x 2011-01-28 08:59:50.000000000 +0100
+++ Firebird-2.1.4.18393-0/configure.in 2011-03-17 15:08:01.000000000 +0100
@@ -209,6 +209,7 @@ dnl CPU_TYPE=ppc64
INSTALL_PREFIX=linux
PLATFORM=LINUX
AC_DEFINE(LINUX, 1, [Define this if OS is Linux])
+ LOCK_MANAGER_FLG=Y
EDITLINE_FLG=Y
SHRLIB_EXT=so
;;