ENH: Convert CMAKE_LINK_OLD_PATHS to policy CMP0003.

  - Policy is WARN by default so projects will build
    as they did in 2.4 without user intervention
  - Remove CMAKE_LINK_OLD_PATHS variable since it was
    never in a release and the policy supercedes it
  - Report target creation backtrace in warning message
    since policy should be set by that point

1 files changed, 8 insertions, 0 deletions

diff --git a/Source/cmTarget.h b/Source/cmTarget.h
index a8b2863..82d9b67 100644
--- a/Source/cmTarget.h
+++ b/Source/cmTarget.h
@@ -19,6 +19,7 @@
 
 #include "cmCustomCommand.h"
 #include "cmPropertyMap.h"
+#include "cmPolicies.h"
 
 class cmake;
 class cmMakefile;
@@ -105,6 +106,10 @@ public:
   void SetMakefile(cmMakefile *mf);
   cmMakefile *GetMakefile() const { return this->Makefile;};
 
+  /** Get the status of policy CMP0003 when the target was created.  */
+  cmPolicies::PolicyStatus GetPolicyStatusCMP0003() const
+    { return this->PolicyStatusCMP0003; }
+
   /**
    * Get the list of the custom commands for this target
    */
@@ -530,6 +535,9 @@ private:
   // always be set.
   cmMakefile* Makefile;
 
+  // Policy status recorded when target was created.
+  cmPolicies::PolicyStatus PolicyStatusCMP0003;
+
   // Internal representation details.
   friend class cmTargetInternals;
   cmTargetInternalPointer Internal;