Inject gnueabihf environment into the effective clang triple for NaCl

lib/Driver/ToolChains.h

 //===--- ToolChains.h - ToolChain Implementations ---------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef CLANG_LIB_DRIVER_TOOLCHAINS_H_
@@ skipping 723 matching lines @@
   AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args,
                       llvm::opt::ArgStringList &CmdArgs) const override;
 
   bool
   IsIntegratedAssemblerDefault() const override { return false; }
 
   // Get the path to the file containing NaCl's ARM macros. It lives in NaCl_TC
   // because the AssembleARM tool needs a const char * that it can pass around
   // and the toolchain outlives all the jobs.
   const char *GetNaClArmMacrosPath() const { return NaClArmMacrosPath.c_str(); }
+
+  std::string ComputeEffectiveClangTriple(const llvm::opt::ArgList &Args,
+                                          types::ID InputType) const override;
   std::string Linker;
 
 protected:
   Tool *buildLinker() const override;
   Tool *buildAssembler() const override;
 
 private:
   std::string NaClArmMacrosPath;
 };
 // @LOCALMOD-END
@@ skipping 58 matching lines @@
                        llvm::opt::ArgStringList &CC1Args) const override;
   void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args,
                            llvm::opt::ArgStringList &CmdArgs) const override;
 };
 
 } // end namespace toolchains
 } // end namespace driver
 } // end namespace clang
 
 #endif