From 251e835b3f7320f0099d003de5a675af58e62e46 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Mon, 30 Jun 2014 10:43:36 -0400
Subject: [PATCH] cmTarget: Add to LinkImplementation a backtrace for each
 library

Allow clients to provide backtrace context on evaluation diagnostics.
---
 Source/cmTarget.cxx |  2 +-
 Source/cmTarget.h   | 10 ++++++----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/Source/cmTarget.cxx b/Source/cmTarget.cxx
index 94b339b5e..6bc427397 100644
--- a/Source/cmTarget.cxx
+++ b/Source/cmTarget.cxx
@@ -6677,7 +6677,7 @@ void cmTarget::ComputeLinkImplementation(const std::string& config,
 
       // The entry is meant for this configuration.
       impl.Libraries.push_back(
-        cmLinkImplItem(name, this->FindTargetToLink(name)));
+        cmLinkImplItem(name, this->FindTargetToLink(name), le->Backtrace));
       }
 
     std::set<std::string> const& seenProps = cge->GetSeenTargetProperties();
diff --git a/Source/cmTarget.h b/Source/cmTarget.h
index 8578c5152..5f2a5574a 100644
--- a/Source/cmTarget.h
+++ b/Source/cmTarget.h
@@ -57,12 +57,14 @@ public:
 class cmLinkImplItem: public cmLinkItem
 {
 public:
-  cmLinkImplItem(): cmLinkItem() {}
+  cmLinkImplItem(): cmLinkItem(), Backtrace(0) {}
   cmLinkImplItem(std::string const& n,
-                 cmTarget const* t):
-    cmLinkItem(n, t) {}
+                 cmTarget const* t,
+                 cmListFileBacktrace const& bt):
+    cmLinkItem(n, t), Backtrace(bt) {}
   cmLinkImplItem(cmLinkImplItem const& r):
-    cmLinkItem(r) {}
+    cmLinkItem(r), Backtrace(r.Backtrace) {}
+  cmListFileBacktrace Backtrace;
 };
 
 struct cmTargetLinkInformationMap: