From 069d60fe039ae1d797a26786f3cd4c23afc27b07 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Mon, 16 Jun 2014 09:45:46 -0400
Subject: cmTarget: Add method to lookup other targets in a target's scope

Move the main implementation of cmComputeLinkDepends::FindTargetToLink
into cmTarget.
---
 Source/cmComputeLinkDepends.cxx | 31 +++----------------------------
 Source/cmTarget.cxx             | 31 +++++++++++++++++++++++++++++++
 Source/cmTarget.h               |  2 ++
 3 files changed, 36 insertions(+), 28 deletions(-)

diff --git a/Source/cmComputeLinkDepends.cxx b/Source/cmComputeLinkDepends.cxx
index 1b83ee8..1b2d1cb 100644
--- a/Source/cmComputeLinkDepends.cxx
+++ b/Source/cmComputeLinkDepends.cxx
@@ -623,40 +623,15 @@ cmTarget const* cmComputeLinkDepends::FindTargetToLink(int depender_index,
                                                  const std::string& name)
 {
   // Look for a target in the scope of the depender.
-  cmMakefile* mf = this->Makefile;
+  cmTarget const* from = this->Target;
   if(depender_index >= 0)
     {
     if(cmTarget const* depender = this->EntryList[depender_index].Target)
       {
-      mf = depender->GetMakefile();
+      from = depender;
       }
     }
-  cmTarget const* tgt = mf->FindTargetToUse(name);
-
-  // Skip targets that will not really be linked.  This is probably a
-  // name conflict between an external library and an executable
-  // within the project.
-  if(tgt && tgt->GetType() == cmTarget::EXECUTABLE &&
-     !tgt->IsExecutableWithExports())
-    {
-    tgt = 0;
-    }
-
-  if(tgt && tgt->GetType() == cmTarget::OBJECT_LIBRARY)
-    {
-    cmOStringStream e;
-    e << "Target \"" << this->Target->GetName() << "\" links to "
-      "OBJECT library \"" << tgt->GetName() << "\" but this is not "
-      "allowed.  "
-      "One may link only to STATIC or SHARED libraries, or to executables "
-      "with the ENABLE_EXPORTS property set.";
-    this->CMakeInstance->IssueMessage(cmake::FATAL_ERROR, e.str(),
-                                      this->Target->GetBacktrace());
-    tgt = 0;
-    }
-
-  // Return the target found, if any.
-  return tgt;
+  return from->FindTargetToLink(name);
 }
 
 //----------------------------------------------------------------------------
diff --git a/Source/cmTarget.cxx b/Source/cmTarget.cxx
index 4ef481a..9a6c93c 100644
--- a/Source/cmTarget.cxx
+++ b/Source/cmTarget.cxx
@@ -6681,6 +6681,37 @@ cmTarget::ComputeLinkImplementationLanguages(const std::string& config,
 }
 
 //----------------------------------------------------------------------------
+cmTarget const* cmTarget::FindTargetToLink(std::string const& name) const
+{
+  cmTarget const* tgt = this->Makefile->FindTargetToUse(name);
+
+  // Skip targets that will not really be linked.  This is probably a
+  // name conflict between an external library and an executable
+  // within the project.
+  if(tgt && tgt->GetType() == cmTarget::EXECUTABLE &&
+     !tgt->IsExecutableWithExports())
+    {
+    tgt = 0;
+    }
+
+  if(tgt && tgt->GetType() == cmTarget::OBJECT_LIBRARY)
+    {
+    cmOStringStream e;
+    e << "Target \"" << this->GetName() << "\" links to "
+      "OBJECT library \"" << tgt->GetName() << "\" but this is not "
+      "allowed.  "
+      "One may link only to STATIC or SHARED libraries, or to executables "
+      "with the ENABLE_EXPORTS property set.";
+    cmake* cm = this->Makefile->GetCMakeInstance();
+    cm->IssueMessage(cmake::FATAL_ERROR, e.str(), this->GetBacktrace());
+    tgt = 0;
+    }
+
+  // Return the target found, if any.
+  return tgt;
+}
+
+//----------------------------------------------------------------------------
 std::string cmTarget::CheckCMP0004(std::string const& item) const
 {
   // Strip whitespace off the library names because we used to do this
diff --git a/Source/cmTarget.h b/Source/cmTarget.h
index cb68559..049d3ea 100644
--- a/Source/cmTarget.h
+++ b/Source/cmTarget.h
@@ -308,6 +308,8 @@ public:
   };
   LinkClosure const* GetLinkClosure(const std::string& config) const;
 
+  cmTarget const* FindTargetToLink(std::string const& name) const;
+
   /** Strip off leading and trailing whitespace from an item named in
       the link dependencies of this target.  */
   std::string CheckCMP0004(std::string const& item) const;
-- 
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