VS: Simplify logic collecting object library files as sources

Object library files are already included by `GetExternalObjects`
and `GetConfigCommonSourceFiles` so we don't need to call
`UseObjectLibraries` to get them.

Source/cmLocalVisualStudio7Generator.cxx

@@ -1306,14 +1306,21 @@ void cmLocalVisualStudio7GeneratorInternals::OutputObjects(
   // list object library content on the link line instead.
   cmLocalVisualStudio7Generator* lg = this->LocalGenerator;
   std::string currentBinDir = lg->GetCurrentBinaryDirectory();
-  std::vector<std::string> objs;
-  gt->UseObjectLibraries(objs, "");
+
+  std::vector<cmSourceFile*> sources;
+  if (!gt->GetConfigCommonSourceFiles(sources)) {
+    return;
+  }
+
   const char* sep = isep ? isep : "";
-  for (std::vector<std::string>::const_iterator oi = objs.begin();
-       oi != objs.end(); ++oi) {
-    std::string rel = lg->ConvertToRelativePath(currentBinDir, oi->c_str());
-    fout << sep << lg->ConvertToXMLOutputPath(rel.c_str());
-    sep = " ";
+  for (std::vector<cmSourceFile*>::const_iterator i = sources.begin();
+       i != sources.end(); i++) {
+    if (!(*i)->GetObjectLibrary().empty()) {
+      std::string const& objFile = (*i)->GetFullPath();
+      std::string rel = lg->ConvertToRelativePath(currentBinDir, objFile);
+      fout << sep << lg->ConvertToXMLOutputPath(rel.c_str());
+      sep = " ";
+    }
   }
 }
 
@@ -1370,7 +1377,13 @@ void cmLocalVisualStudio7Generator::WriteVCProjFile(std::ostream& fout,
   for (std::vector<cmSourceFile*>::const_iterator i = classes.begin();
        i != classes.end(); i++) {
     if (!(*i)->GetObjectLibrary().empty()) {
-      continue;
+      if (this->GetVersion() < cmGlobalVisualStudioGenerator::VS8 ||
+          this->FortranProject) {
+        // VS < 8 does not support per-config source locations so we
+        // list object library content on the link line instead.
+        // See OutputObjects.
+        continue;
+      }
     }
     // Add the file to the list of sources.
     std::string source = (*i)->GetFullPath();
@@ -1392,24 +1405,6 @@ void cmLocalVisualStudio7Generator::WriteVCProjFile(std::ostream& fout,
     this->WriteGroup(&sg, target, fout, libName, configs);
   }
 
-  if (this->GetVersion() >= cmGlobalVisualStudioGenerator::VS8 &&
-      !this->FortranProject) {
-    // VS >= 8 support per-config source locations so we
-    // list object library content as external objects.
-    std::vector<std::string> objs;
-    target->UseObjectLibraries(objs, "");
-    if (!objs.empty()) {
-      // TODO: Separate sub-filter for each object library used?
-      fout << "\t\t<Filter Name=\"Object Libraries\">\n";
-      for (std::vector<std::string>::const_iterator oi = objs.begin();
-           oi != objs.end(); ++oi) {
-        std::string o = this->ConvertToXMLOutputPathSingle(oi->c_str());
-        fout << "\t\t\t<File RelativePath=\"" << o << "\" />\n";
-      }
-      fout << "\t\t</Filter>\n";
-    }
-  }
-
   fout << "\t</Files>\n";
 
   // Write the VCProj file's footer.

Source/cmVisualStudio10TargetGenerator.cxx

@@ -1337,23 +1337,6 @@ void cmVisualStudio10TargetGenerator::WriteGroups()
     this->WriteString("</ItemGroup>\n", 1);
   }
 
-  // Add object library contents as external objects.
-  std::vector<std::string> objs;
-  this->GeneratorTarget->UseObjectLibraries(objs, "");
-  if (!objs.empty()) {
-    this->WriteString("<ItemGroup>\n", 1);
-    for (std::vector<std::string>::const_iterator oi = objs.begin();
-         oi != objs.end(); ++oi) {
-      std::string obj = *oi;
-      this->WriteString("<Object Include=\"", 2);
-      this->ConvertToWindowsSlash(obj);
-      (*this->BuildFileStream) << cmVS10EscapeXML(obj) << "\">\n";
-      this->WriteString("<Filter>Object Libraries</Filter>\n", 3);
-      this->WriteString("</Object>\n", 2);
-    }
-    this->WriteString("</ItemGroup>\n", 1);
-  }
-
   this->WriteString("<ItemGroup>\n", 1);
   for (std::set<cmSourceGroup*>::iterator g = groupsUsed.begin();
        g != groupsUsed.end(); ++g) {
@@ -1371,15 +1354,6 @@ void cmVisualStudio10TargetGenerator::WriteGroups()
       this->WriteString("</Filter>\n", 2);
     }
   }
-  if (!objs.empty()) {
-    this->WriteString("<Filter Include=\"Object Libraries\">\n", 2);
-    std::string guidName = "SG_Filter_Object Libraries";
-    this->WriteString("<UniqueIdentifier>", 3);
-    std::string guid = this->GlobalGenerator->GetGUID(guidName.c_str());
-    (*this->BuildFileStream) << "{" << guid << "}"
-                             << "</UniqueIdentifier>\n";
-    this->WriteString("</Filter>\n", 2);
-  }
 
   if (!resxObjs.empty() || !this->AddedFiles.empty()) {
     this->WriteString("<Filter Include=\"Resource Files\">\n", 2);
@@ -1824,14 +1798,6 @@ void cmVisualStudio10TargetGenerator::WriteAllSources()
 
   std::vector<cmSourceFile const*> externalObjects;
   this->GeneratorTarget->GetExternalObjects(externalObjects, "");
-  for (std::vector<cmSourceFile const*>::iterator si = externalObjects.begin();
-       si != externalObjects.end();) {
-    if (!(*si)->GetObjectLibrary().empty()) {
-      si = externalObjects.erase(si);
-    } else {
-      ++si;
-    }
-  }
   if (this->LocalGenerator->GetVersion() >
       cmGlobalVisualStudioGenerator::VS10) {
     // For VS >= 11 we use LinkObjects to avoid linking custom command
@@ -1857,17 +1823,6 @@ void cmVisualStudio10TargetGenerator::WriteAllSources()
     this->WriteExtraSource(*si);
   }
 
-  // Add object library contents as external objects.
-  std::vector<std::string> objs;
-  this->GeneratorTarget->UseObjectLibraries(objs, "");
-  for (std::vector<std::string>::const_iterator oi = objs.begin();
-       oi != objs.end(); ++oi) {
-    std::string obj = *oi;
-    this->WriteString("<Object Include=\"", 2);
-    this->ConvertToWindowsSlash(obj);
-    (*this->BuildFileStream) << cmVS10EscapeXML(obj) << "\" />\n";
-  }
-
   std::vector<cmSourceFile const*> defSources;
   this->GeneratorTarget->GetModuleDefinitionSources(defSources, "");
   this->WriteSources("None", defSources);