Factor implicit link info addition into methods

In cmComputeLinkInformation::Compute we add implicit link information
from languages other than the linker language to the end of the link
line.  This factors out that code into separate methods to improve
readability and organization.

Source/cmComputeLinkInformation.cxx

@@ -553,6 +553,15 @@ bool cmComputeLinkInformation::Compute()
     }
 
   // Add implicit language runtime libraries and directories.
+  this->AddImplicitLinkInfo();
+
+  return true;
+}
+
+//----------------------------------------------------------------------------
+void cmComputeLinkInformation::AddImplicitLinkInfo()
+{
+  // The link closure lists all languages whose implicit info is needed.
   cmTarget::LinkClosure const* lc=this->Target->GetLinkClosure(this->Config);
   for(std::vector<std::string>::const_iterator li = lc->Languages.begin();
       li != lc->Languages.end(); ++li)
@@ -560,10 +569,18 @@ bool cmComputeLinkInformation::Compute()
     // Skip those of the linker language.  They are implicit.
     if(*li != this->LinkLanguage)
       {
+      this->AddImplicitLinkInfo(*li);
+      }
+    }
+}
+
+//----------------------------------------------------------------------------
+void cmComputeLinkInformation::AddImplicitLinkInfo(std::string const& lang)
+{
   // Add libraries for this language that are not implied by the
   // linker language.
   std::string libVar = "CMAKE_";
-      libVar += *li;
+  libVar += lang;
   libVar += "_IMPLICIT_LINK_LIBRARIES";
   if(const char* libs = this->Makefile->GetDefinition(libVar.c_str()))
     {
@@ -582,7 +599,7 @@ bool cmComputeLinkInformation::Compute()
   // Add linker search paths for this language that are not
   // implied by the linker language.
   std::string dirVar = "CMAKE_";
-      dirVar += *li;
+  dirVar += lang;
   dirVar += "_IMPLICIT_LINK_DIRECTORIES";
   if(const char* dirs = this->Makefile->GetDefinition(dirVar.c_str()))
     {
@@ -590,10 +607,6 @@ bool cmComputeLinkInformation::Compute()
     cmSystemTools::ExpandListArgument(dirs, dirsVec);
     this->OrderLinkerSearchPath->AddLanguageDirectories(dirsVec);
     }
-      }
-    }
-
-  return true;
 }
 
 //----------------------------------------------------------------------------

Source/cmComputeLinkInformation.h

@@ -163,6 +163,8 @@ private:
 
   // Implicit link libraries and directories for linker language.
   void LoadImplicitLinkInfo();
+  void AddImplicitLinkInfo();
+  void AddImplicitLinkInfo(std::string const& lang);
   std::set<cmStdString> ImplicitLinkDirs;
   std::set<cmStdString> ImplicitLinkLibs;