Index: trunk/ppBackground/configure.ac
===================================================================
--- trunk/ppBackground/configure.ac	(revision 28276)
+++ trunk/ppBackground/configure.ac	(revision 28280)
@@ -20,5 +20,10 @@
 PKG_CHECK_MODULES([PSLIB], [pslib >= 1.0.0])
 PKG_CHECK_MODULES([PSMODULE], [psmodules >= 1.0.0])
-PKG_CHECK_MODULES([PSPHOT], [psphot >= 1.0.0])
+PKG_CHECK_MODULES([PSPHOT], [psphot])
+
+AC_PATH_PROG([ERRORCODES], [psParseErrorCodes], [missing])
+if test "$ERRORCODES" = "missing" ; then
+  AC_MSG_ERROR([psParseErrorCodes is required])
+fi
 
 dnl Set CFLAGS for build