cmTarget: Add to LinkImplementation a backtrace for each library

Allow clients to provide backtrace context on evaluation diagnostics.

2 files changed, 7 insertions, 5 deletions

diff --git a/Source/cmTarget.cxx b/Source/cmTarget.cxx
index 94b339b..6bc4273 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 8578c51..5f2a557 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: