cmLinkItem: Add backtrace

Carry a backtrace on every link item, not just link implementation
items.  For now the non-impl items will still have empty backtraces at
runtime, but this will allow us to introduce values over time.

1 files changed, 4 insertions, 5 deletions

diff --git a/Source/cmLinkItem.h b/Source/cmLinkItem.h
index 74fd298..e1ddd22 100644
--- a/Source/cmLinkItem.h
+++ b/Source/cmLinkItem.h
@@ -24,10 +24,11 @@ class cmLinkItem
 
 public:
   cmLinkItem();
-  explicit cmLinkItem(std::string const& s);
-  explicit cmLinkItem(cmGeneratorTarget const* t);
+  cmLinkItem(std::string const& s, cmListFileBacktrace const& bt);
+  cmLinkItem(cmGeneratorTarget const* t, cmListFileBacktrace const& bt);
   std::string const& AsStr() const;
   cmGeneratorTarget const* Target;
+  cmListFileBacktrace Backtrace;
   friend bool operator<(cmLinkItem const& l, cmLinkItem const& r);
   friend bool operator==(cmLinkItem const& l, cmLinkItem const& r);
   friend std::ostream& operator<<(std::ostream& os, cmLinkItem const& item);
@@ -37,9 +38,7 @@ class cmLinkImplItem : public cmLinkItem
 {
 public:
   cmLinkImplItem();
-  cmLinkImplItem(cmLinkItem item, cmListFileBacktrace const& bt,
-                 bool fromGenex);
-  cmListFileBacktrace Backtrace;
+  cmLinkImplItem(cmLinkItem item, bool fromGenex);
   bool FromGenex;
 };