Configuration data now supports a vector of library paths.
Add the GetPathForLinkageItem method to the interface so full paths can
be generated for a given linkage item.

llvm-svn: 18187
diff --git a/llvm/tools/llvmc/CompilerDriver.h b/llvm/tools/llvmc/CompilerDriver.h
index 62e53e2..b748e77 100644
--- a/llvm/tools/llvmc/CompilerDriver.h
+++ b/llvm/tools/llvmc/CompilerDriver.h
@@ -94,6 +94,7 @@
         std::string version;    ///< The version number.
         std::string langName;   ///< The name of the source language 
         StringTable opts;       ///< The o10n options for each level
+        StringVector libpaths;  ///< The library paths
         Action PreProcessor;    ///< PreProcessor command line
         Action Translator;      ///< Translator command line
         Action Optimizer;       ///< Optimizer command line
@@ -188,6 +189,12 @@
       /// @brief Set the list of -W options to be passed through
       virtual void setWPassThrough(const StringVector& fOpts) = 0;
 
+      /// @brief Determine where a linkage file is located in the file system
+      virtual sys::Path GetPathForLinkageItem(
+        const std::string& link_item, ///< Item to be sought
+        bool native = false           ///< Looking for native?
+      ) = 0;
+
     /// @}
   };
 }