From 578e83501becca2aa0b2ff38380e8e2dc7508f7d Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Wed, 6 Aug 2008 17:48:44 -0400
Subject: [PATCH] BUG: Fix crash on circular target dependencies

After reporting an error about circular target dependencies do not try
to continue generation because the dependency computation object is not
in a useful state.
---
 Source/cmGlobalGenerator.cxx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Source/cmGlobalGenerator.cxx b/Source/cmGlobalGenerator.cxx
index cf4abdd5e..a1f42cf53 100644
--- a/Source/cmGlobalGenerator.cxx
+++ b/Source/cmGlobalGenerator.cxx
@@ -860,7 +860,10 @@ void cmGlobalGenerator::Generate()
   // Compute the inter-target dependencies.
   {
   cmComputeTargetDepends ctd(this);
-  ctd.Compute();
+  if(!ctd.Compute())
+    {
+    return;
+    }
   std::vector<cmTarget*> const& targets = ctd.GetTargets();
   for(std::vector<cmTarget*>::const_iterator ti = targets.begin();
       ti != targets.end(); ++ti)