--- configure.in	2010-07-08 13:35:18.000000000 -0700
+++ configure.in	2012-04-10 17:37:23.820532000 -0700
@@ -143,7 +143,9 @@
 #
 # The default port that the TCS daemon listens on
 #
-AC_SUBST(TCSD_DEFAULT_PORT, 30003)
+#AC_SUBST(TCSD_DEFAULT_PORT, 30003)
+# 0 designates UNIX Domain socket. For TCP sockets, 30003 is the traditional TCP port.
+AC_SUBST(TCSD_DEFAULT_PORT, 0)
 #
 # The RPC mechanism to build into both libtspi and the tcsd
 #
@@ -351,6 +353,7 @@
 
 AC_C_BIGENDIAN([AC_DEFINE(_BIG_ENDIAN, 1, [big-endian host])])
 AC_CHECK_DECL(htole32, [AC_DEFINE(HTOLE_DEFINED, 1, [htole32 function is available])])
+AC_CHECK_HEADER(endian.h, [AC_DEFINE(HAVE_ENDIAN_H, 1, [endian.h header])])
 AC_CHECK_HEADER(sys/byteorder.h, [AC_DEFINE(HAVE_BYTEORDER_H, 1, [sys/byteorder.h header])])
 AC_CHECK_FUNC(daemon, [ AC_DEFINE(HAVE_DAEMON, 1, [daemon function is available]) ])