Add LINK_LIBRARIES property for direct target link dependencies

Previously we kept direct link dependencies in OriginalLinkLibraries.
The property exposes the information in the CMake language through the
get/set_property commands.  We preserve the OriginalLinkLibraries value
internally to support old APIs like that for CMP0003's OLD behavior, but
the property is now authoritative.  This follows up from commit d5cf644a
(Split link information processing into two steps, 2012-11-01).

This will be used later to populate the link interface properties when
exporting targets, and will later allow use of generator expressions
when linking to libraries with target_link_libraries.

Also make targets depend on the (config-specific) union of dependencies.
CMake now allows linking to dependencies or not depending on the config.
However, generated build systems are not all capable of processing
config-specific dependencies, so the targets depend on the union of
dependencies for all configs.

1 files changed, 33 insertions, 7 deletions

diff --git a/Source/cmComputeTargetDepends.cxx b/Source/cmComputeTargetDepends.cxx
index c3a75e4b61..8fd95b9cd5 100644
--- a/Source/cmComputeTargetDepends.cxx
+++ b/Source/cmComputeTargetDepends.cxx
@@ -200,25 +200,51 @@ void cmComputeTargetDepends::CollectTargetDepends(int depender_index)
   // Get the depender.
   cmTarget* depender = this->Targets[depender_index];
 
-  // Loop over all targets linked directly.
+  // Loop over all targets linked directly in all configs.
+  // We need to make targets depend on the union of all config-specific
+  // dependencies in all targets, because the generated build-systems can't
+  // deal with config-specific dependencies.
   {
-  cmTarget::LinkLibraryVectorType const& tlibs =
-    depender->GetOriginalLinkLibraries();
   std::set<cmStdString> emitted;
+  {
+  std::vector<std::string> tlibs;
+  depender->GetDirectLinkLibraries(0, tlibs, depender);
   // A target should not depend on itself.
   emitted.insert(depender->GetName());
-  for(cmTarget::LinkLibraryVectorType::const_iterator lib = tlibs.begin();
+  for(std::vector<std::string>::const_iterator lib = tlibs.begin();
       lib != tlibs.end(); ++lib)
     {
     // Don't emit the same library twice for this target.
-    if(emitted.insert(lib->first).second)
+    if(emitted.insert(*lib).second)
       {
-      this->AddTargetDepend(depender_index, lib->first.c_str(), true);
-      this->AddInterfaceDepends(depender_index, lib->first.c_str(),
+      this->AddTargetDepend(depender_index, lib->c_str(), true);
+      this->AddInterfaceDepends(depender_index, lib->c_str(),
                                 true, emitted);
       }
     }
   }
+  std::vector<std::string> configs;
+  depender->GetMakefile()->GetConfigurations(configs);
+  for (std::vector<std::string>::const_iterator it = configs.begin();
+    it != configs.end(); ++it)
+    {
+    std::vector<std::string> tlibs;
+    depender->GetDirectLinkLibraries(it->c_str(), tlibs, depender);
+    // A target should not depend on itself.
+    emitted.insert(depender->GetName());
+    for(std::vector<std::string>::const_iterator lib = tlibs.begin();
+        lib != tlibs.end(); ++lib)
+      {
+      // Don't emit the same library twice for this target.
+      if(emitted.insert(*lib).second)
+        {
+        this->AddTargetDepend(depender_index, lib->c_str(), true);
+        this->AddInterfaceDepends(depender_index, lib->c_str(),
+                                  true, emitted);
+        }
+      }
+    }
+  }
 
   // Loop over all utility dependencies.
   {