Make sure that all globals are internal, except for "start" functions.

src/IceClFlags.h

 //===- subzero/src/IceClFlags.h - Cl Flags for translation ------*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 21 matching lines @@
   static void parseFlags(int argc, char *argv[]);
   static void resetClFlags(ClFlags &OutFlags);
   static void getParsedClFlags(ClFlags &OutFlags);
   static void getParsedClFlagsExtra(ClFlagsExtra &OutFlagsExtra);
 
   // bool accessors.
 
   bool getAllowErrorRecovery() const { return AllowErrorRecovery; }
   void setAllowErrorRecovery(bool NewValue) { AllowErrorRecovery = NewValue; }
 
+  bool getAllowExternDefinedSymbols() const {
+    return AllowExternDefinedSymbols;
+  }
+  void setAllowExternDefinedSymbols(bool NewValue) {
+    AllowExternDefinedSymbols = NewValue;
+  }
+
   bool getAllowIacaMarks() const { return AllowIacaMarks; }
   void setAllowIacaMarks(bool NewValue) { AllowIacaMarks = NewValue; }
 
   bool getAllowUninitializedGlobals() const {
     return AllowUninitializedGlobals;
   }
   void setAllowUninitializedGlobals(bool NewValue) {
     AllowUninitializedGlobals = NewValue;
   }
 
@@ skipping 179 matching lines @@
   bool isSequential() const { return NumTranslationThreads == 0; }
   void setNumTranslationThreads(size_t NewValue) {
     NumTranslationThreads = NewValue;
   }
 
   uint64_t getRandomSeed() const { return RandomSeed; }
   void setRandomSeed(size_t NewValue) { RandomSeed = NewValue; }
 
 private:
   bool AllowErrorRecovery;
+  bool AllowExternDefinedSymbols;
   bool AllowIacaMarks;
   bool AllowUninitializedGlobals;
   bool DataSections;
   bool DecorateAsm;
   bool DisableInternal;
   bool DisableIRGeneration;
   bool DisableTranslation;
   bool DumpStats;
   bool EnableBlockProfile;
   bool ForceMemIntrinOpt;
@@ skipping 31 matching lines @@
   IceString TranslateOnly;
   IceString VerboseFocusOn;
 
   size_t NumTranslationThreads; // 0 means completely sequential
   uint64_t RandomSeed;
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICECLFLAGS_H