cmake: Future-proof --find-package mode.

Create cmGeneratorTargets before generating generate-time information.
C++ interfaces for querying build information is increasingly only
available at generate time through the cmGeneratorTarget class.  Ensure
that the required cmGeneratorTarget instances are created.  Use the
cmGlobalGenerator access API to access the relevant cmGeneratorTarget
instead of creating a temporary one on the stack.

3 files changed, 31 insertions, 26 deletions

diff --git a/Source/cmGlobalGenerator.cxx b/Source/cmGlobalGenerator.cxx
index f883fbe..5a6b9b0 100644
--- a/Source/cmGlobalGenerator.cxx
+++ b/Source/cmGlobalGenerator.cxx
@@ -1375,35 +1375,37 @@ void cmGlobalGenerator::FinalizeTargetCompileInfo()
 }
 
 //----------------------------------------------------------------------------
+void cmGlobalGenerator::CreateGeneratorTargets(cmMakefile *mf)
+{
+  cmGeneratorTargetsType generatorTargets;
+  cmTargets& targets = mf->GetTargets();
+  for(cmTargets::iterator ti = targets.begin();
+      ti != targets.end(); ++ti)
+    {
+    cmTarget* t = &ti->second;
+    cmGeneratorTarget* gt = new cmGeneratorTarget(t);
+    this->GeneratorTargets[t] = gt;
+    generatorTargets[t] = gt;
+    }
+
+  for(std::vector<cmTarget*>::const_iterator
+        j = mf->GetOwnedImportedTargets().begin();
+      j != mf->GetOwnedImportedTargets().end(); ++j)
+    {
+    cmGeneratorTarget* gt = new cmGeneratorTarget(*j);
+    this->GeneratorTargets[*j] = gt;
+    generatorTargets[*j] = gt;
+    }
+  mf->SetGeneratorTargets(generatorTargets);
+}
+
+//----------------------------------------------------------------------------
 void cmGlobalGenerator::CreateGeneratorTargets()
 {
   // Construct per-target generator information.
   for(unsigned int i=0; i < this->LocalGenerators.size(); ++i)
     {
-    cmGeneratorTargetsType generatorTargets;
-
-    cmMakefile *mf = this->LocalGenerators[i]->GetMakefile();
-
-    cmTargets& targets = mf->GetTargets();
-    for(cmTargets::iterator ti = targets.begin();
-        ti != targets.end(); ++ti)
-      {
-      cmTarget* t = &ti->second;
-      cmGeneratorTarget* gt = new cmGeneratorTarget(t);
-      this->GeneratorTargets[t] = gt;
-      generatorTargets[t] = gt;
-      }
-
-    for(std::vector<cmTarget*>::const_iterator
-          j = mf->GetOwnedImportedTargets().begin();
-        j != mf->GetOwnedImportedTargets().end(); ++j)
-      {
-      cmGeneratorTarget* gt = new cmGeneratorTarget(*j);
-      this->GeneratorTargets[*j] = gt;
-      generatorTargets[*j] = gt;
-      }
-
-    mf->SetGeneratorTargets(generatorTargets);
+    this->CreateGeneratorTargets(this->LocalGenerators[i]->GetMakefile());
     }
 }
 
diff --git a/Source/cmGlobalGenerator.h b/Source/cmGlobalGenerator.h
index fc5cab9..bbfe442 100644
--- a/Source/cmGlobalGenerator.h
+++ b/Source/cmGlobalGenerator.h
@@ -432,6 +432,8 @@ private:
 
   // Per-target generator information.
   cmGeneratorTargetsType GeneratorTargets;
+  friend class cmake;
+  void CreateGeneratorTargets(cmMakefile* mf);
   void CreateGeneratorTargets();
   void ComputeGeneratorTargetObjects();
   virtual void ComputeTargetObjects(cmGeneratorTarget* gt) const;
diff --git a/Source/cmake.cxx b/Source/cmake.cxx
index 1dd8a66..cf4b9c3 100644
--- a/Source/cmake.cxx
+++ b/Source/cmake.cxx
@@ -593,9 +593,10 @@ bool cmake::FindPackage(const std::vector<std::string>& args)
     std::string linkPath;
     std::string flags;
     std::string linkFlags;
-    cmGeneratorTarget gtgt(tgt);
+    gg->CreateGeneratorTargets(mf);
+    cmGeneratorTarget *gtgt = gg->GetGeneratorTarget(tgt);
     lg->GetTargetFlags(linkLibs, frameworkPath, linkPath, flags, linkFlags,
-                       &gtgt);
+                       gtgt);
     linkLibs = frameworkPath + linkPath + linkLibs;
 
     printf("%s\n", linkLibs.c_str() );