[lld] Fix shared libraries build

[garious]

Summary

• Removed cyclic dependency between lldPECOFF and lldDriver
• Added missing dependencies in unit tests

[ruiu]

LGTM. Thank you for doing this!

[shankarke]

LGTM.

include/lld/Driver/Driver.h

                     bool isDirective = false,
                     std::set<StringRef> *undefinedSymbols = nullptr);
 
+  // Same as parse(), but restricted to the context of directives.
+  static bool parseDirectives(int argc, const char *argv[],
+                    PECOFFLinkingContext &info,
+                    raw_ostream &diagnostics = llvm::errs(),
+                    std::set<StringRef> *undefinedSymbols = nullptr) {
+    return parse(argc, argv, info, diagnostics, true, undefinedSymbols);
+  }
+
 private:
   WinLinkDriver() LLVM_DELETED_FUNCTION;
 };

include/lld/ReaderWriter/PECOFFLinkingContext.h

         _manifestUAC(true), _manifestLevel("'asInvoker'"),
         _manifestUiAccess("'false'"), _isDll(false), _highEntropyVA(true),
         _requireSEH(false), _noSEH(false), _implib(""), _debug(false),
-        _pdbFilePath(""), _dosStub(llvm::makeArrayRef(DEFAULT_DOS_STUB)) {
+        _pdbFilePath(""), _dosStub(llvm::makeArrayRef(DEFAULT_DOS_STUB)),
+        _parseDirectives(nullptr) {
     setDeadStripping(true);
   }
 

     bool isPrivate;
   };
 
+  typedef bool (*ParseDirectives)(int, const char **, PECOFFLinkingContext &,
+                                  raw_ostream &, std::set<StringRef> *);
+
   /// \brief Casting support
   static inline bool classof(const LinkingContext *info) { return true; }
 

 
   std::recursive_mutex &getMutex() { return _mutex; }
 
+  void setParseDirectives(ParseDirectives parseDirectives) {
+    _parseDirectives = parseDirectives;
+  }
+
+  ParseDirectives getParseDirectives() {
+    return _parseDirectives;
+  }
+
 protected:
   /// Method to create a internal file for the entry symbol
   std::unique_ptr<File> createEntrySymbolFile() const override;

 
   std::set<std::string> _definedSyms;
   std::set<Node *> _seen;
+
+  ParseDirectives _parseDirectives;
 };
 
 } // end namespace lld

lib/Driver/WinLinkDriver.cpp

     return true;
 
   PECOFFLinkingContext ctx;
+  ctx.setParseDirectives(parseDirectives);
   ctx.registry().addSupportCOFFObjects(ctx);
   ctx.registry().addSupportCOFFImportLibraries(ctx);
   ctx.registry().addSupportArchives(ctx.logInputFiles());

lib/ReaderWriter/PECOFF/ReaderCOFF.cpp

   const char **argv = &tokens[0];
   std::string errorMessage;
   llvm::raw_string_ostream stream(errorMessage);
-  bool parseFailed = !WinLinkDriver::parse(argc, argv, _ctx, stream,
-                                           /*isDirective*/ true,
-                                           undefinedSymbols);
+  PECOFFLinkingContext::ParseDirectives parseDirectives =
+    _ctx.getParseDirectives();
+  bool parseFailed = !parseDirectives(argc, argv, _ctx, stream,
+                                      undefinedSymbols);
   stream.flush();
   // Print error message if error.
   if (parseFailed) {

tools/lld/CMakeLists.txt

 
 target_link_libraries(lld
   lldDriver
+  LLVMSupport
   )
 
 install(TARGETS lld

unittests/DriverTests/CMakeLists.txt

 
 target_link_libraries(DriverTests
   lldDriver
+  lldCore
+  lldPECOFF
+  lldMachO
   )