# HG changeset patch
# User bulwahn
# Date 1280816588 -7200
# Node ID d9955b3b06fe19d724de23e02e99d07c92c8461b
# Parent  df8fc03995a40b9456ce5812a4d0aa2150df9f3e
only test prolog code examples if environment variable is set

diff -r df8fc03995a4 -r d9955b3b06fe src/HOL/Predicate_Compile_Examples/ROOT.ML
--- a/src/HOL/Predicate_Compile_Examples/ROOT.ML	Mon Aug 02 22:24:19 2010 +0200
+++ b/src/HOL/Predicate_Compile_Examples/ROOT.ML	Tue Aug 03 08:23:08 2010 +0200
@@ -1,2 +1,2 @@
 use_thys ["Predicate_Compile_Examples", "Predicate_Compile_Quickcheck_Examples", "Specialisation_Examples"];
-use_thys ["Code_Prolog_Examples"];
+if getenv "PROLOG_HOME" = "" then () else use_thys ["Code_Prolog_Examples"];