Merge pull request #234 from kripper/master
[mono.git] / mcs / mcs / assembly.cs
index e19d00b3d3d60dd9ea4bf7bb82e54649f19b6fc4..a2af418af5726fac72840bcae2148e8108462998 100644 (file)
@@ -6,7 +6,8 @@
 //   Marek Safar (marek.safar@gmail.com)
 //
 // Copyright 2001, 2002, 2003 Ximian, Inc.
-// Copyright 2004 Novell, Inc.
+// Copyright 2004-2011 Novell, Inc.
+// Copyright 2011 Xamarin Inc
 //
 
 
@@ -37,9 +38,11 @@ namespace Mono.CSharp
                string FullName { get; }
                bool HasExtensionMethod { get; }
                bool IsCLSCompliant { get; }
+               bool IsMissing { get; }
                string Name { get; }
 
                byte[] GetPublicKeyToken ();
+               bool IsFriendAssemblyTo (IAssemblyDefinition assembly);
        }
                 
        public abstract class AssemblyDefinition : IAssemblyDefinition
@@ -47,7 +50,7 @@ namespace Mono.CSharp
                // TODO: make it private and move all builder based methods here
                public AssemblyBuilder Builder;
                protected AssemblyBuilderExtension builder_extra;
-               MonoSymbolWriter symbol_writer;
+               MonoSymbolFile symbol_writer;
 
                bool is_cls_compliant;
                bool wrap_non_exception_throws;
@@ -79,15 +82,15 @@ namespace Mono.CSharp
 
                        wrap_non_exception_throws = true;
 
-                       delay_sign = RootContext.StrongNameDelaySign;
+                       delay_sign = Compiler.Settings.StrongNameDelaySign;
 
                        //
                        // Load strong name key early enough for assembly importer to be able to
                        // use the keys for InternalsVisibleTo
                        // This should go somewhere close to ReferencesLoading but don't have the place yet
                        //
-                       if (RootContext.StrongNameKeyFile != null || RootContext.StrongNameKeyContainer != null) {
-                               LoadPublicKey (RootContext.StrongNameKeyFile, RootContext.StrongNameKeyContainer);
+                       if (Compiler.Settings.HasKeyFileOrContainer) {
+                               LoadPublicKey (Compiler.Settings.StrongNameKeyFile, Compiler.Settings.StrongNameKeyContainer);
                        }
                }
 
@@ -143,7 +146,7 @@ namespace Mono.CSharp
 
                // TODO: This should not exist here but will require more changes
                public MetadataImporter Importer {
-                       get ; set;
+                   get; set;
                }
 
                public bool IsCLSCompliant {
@@ -152,6 +155,12 @@ namespace Mono.CSharp
                        }
                }
 
+               bool IAssemblyDefinition.IsMissing {
+                       get {
+                               return false;
+                       }
+               }
+
                public string Name {
                        get {
                                return name;
@@ -170,6 +179,12 @@ namespace Mono.CSharp
                        }
                }
 
+               public MonoSymbolFile SymbolWriter {
+                       get {
+                               return symbol_writer;
+                       }
+               }
+
                #endregion
 
                public void AddModule (ImportedModuleDefinition module)
@@ -192,7 +207,7 @@ namespace Mono.CSharp
                                if (value == null || value.Length == 0)
                                        return;
 
-                               if (RootContext.Target == Target.Exe) {
+                               if (Compiler.Settings.Target == Target.Exe) {
                                        a.Error_AttributeEmitError ("The executables cannot be satelite assemblies, remove the attribute or keep it empty");
                                        return;
                                }
@@ -200,7 +215,7 @@ namespace Mono.CSharp
                                if (value == "neutral")
                                        value = "";
 
-                               if (RootContext.Target == Target.Module) {
+                               if (Compiler.Settings.Target == Target.Module) {
                                        SetCustomAttribute (ctor, cdata);
                                } else {
                                        builder_extra.SetCulture (value, a.Location);
@@ -214,13 +229,13 @@ namespace Mono.CSharp
                                if (value == null || value.Length == 0)
                                        return;
 
-                               var vinfo = IsValidAssemblyVersion (value.Replace ('*', '0'));
+                               var vinfo = IsValidAssemblyVersion (value, true);
                                if (vinfo == null) {
                                        a.Error_AttributeEmitError (string.Format ("Specified version `{0}' is not valid", value));
                                        return;
                                }
 
-                               if (RootContext.Target == Target.Module) {
+                               if (Compiler.Settings.Target == Target.Module) {
                                        SetCustomAttribute (ctor, cdata);
                                } else {
                                        builder_extra.SetVersion (vinfo, a.Location);
@@ -236,7 +251,7 @@ namespace Mono.CSharp
                                alg |= ((uint) cdata [pos + 2]) << 16;
                                alg |= ((uint) cdata [pos + 3]) << 24;
 
-                               if (RootContext.Target == Target.Module) {
+                               if (Compiler.Settings.Target == Target.Module) {
                                        SetCustomAttribute (ctor, cdata);
                                } else {
                                        builder_extra.SetAlgorithmId (alg, a.Location);
@@ -256,7 +271,7 @@ namespace Mono.CSharp
                                if ((flags & (uint) AssemblyNameFlags.PublicKey) != 0 && public_key == null)
                                        flags &= ~(uint) AssemblyNameFlags.PublicKey;
 
-                               if (RootContext.Target == Target.Module) {
+                               if (Compiler.Settings.Target == Target.Module) {
                                        SetCustomAttribute (ctor, cdata);
                                } else {
                                        builder_extra.SetFlags (flags, a.Location);
@@ -309,17 +324,16 @@ namespace Mono.CSharp
                                string assembly_name = a.GetString ();
                                if (assembly_name.Length == 0)
                                        return;
-
-                               AssemblyName aname = null;
-                               try {
-                                       aname = new AssemblyName (assembly_name);
-                               } catch (Exception) {
+#if STATIC
+                               ParsedAssemblyName aname;
+                               ParseAssemblyResult r = Fusion.ParseAssemblyName (assembly_name, out aname);
+                               if (r != ParseAssemblyResult.OK) {
                                        Report.Warning (1700, 3, a.Location, "Assembly reference `{0}' is invalid and cannot be resolved",
                                                assembly_name);
                                        return;
                                }
 
-                               if (aname.Version != null || aname.CultureInfo != null || aname.ProcessorArchitecture != ProcessorArchitecture.None) {
+                               if (aname.Version != null || aname.Culture != null || aname.ProcessorArchitecture != ProcessorArchitecture.None) {
                                        Report.Error (1725, a.Location,
                                                "Friend assembly reference `{0}' is invalid. InternalsVisibleTo declarations cannot have a version, culture or processor architecture specified",
                                                assembly_name);
@@ -327,17 +341,25 @@ namespace Mono.CSharp
                                        return;
                                }
 
-                               // TODO: GetPublicKey () does not work on .NET when AssemblyName is constructed from a string
-                               if (public_key != null && aname.GetPublicKey () == null) {
+                               if (public_key != null && !aname.HasPublicKey) {
                                        Report.Error (1726, a.Location,
                                                "Friend assembly reference `{0}' is invalid. Strong named assemblies must specify a public key in their InternalsVisibleTo declarations",
                                                assembly_name);
                                        return;
                                }
+#endif
                        } else if (a.Type == pa.RuntimeCompatibility) {
                                wrap_non_exception_throws_custom = true;
+                       } else if (a.Type == pa.AssemblyFileVersion) {
+                               string value = a.GetString ();
+                               if (string.IsNullOrEmpty (value) || IsValidAssemblyVersion (value, false) == null) {
+                                       Report.Warning (1607, 1, a.Location, "The version number `{0}' specified for `{1}' is invalid",
+                                               value, a.Name);
+                                       return;
+                               }
                        }
 
+
                        SetCustomAttribute (ctor, cdata);
                }
 
@@ -350,12 +372,22 @@ namespace Mono.CSharp
                {
                        // TODO: It should check only references assemblies but there is
                        // no working SRE API
-                       foreach (var a in Importer.Assemblies) {
+                       foreach (var entry in Importer.Assemblies) {
+                               var a = entry as ImportedAssemblyDefinition;
+                               if (a == null)
+                                       continue;
+
                                if (public_key != null && !a.HasStrongName) {
                                        Report.Error (1577, "Referenced assembly `{0}' does not have a strong name",
                                                a.FullName);
                                }
 
+                               var ci = a.Assembly.GetName ().CultureInfo;
+                               if (!ci.Equals (System.Globalization.CultureInfo.InvariantCulture)) {
+                                       Report.Warning (1607, 1, "Referenced assembly `{0}' has different culture setting of `{1}'",
+                                               a.Name, ci.Name);
+                               }
+
                                if (!a.IsFriendAssemblyTo (this))
                                        continue;
 
@@ -365,6 +397,7 @@ namespace Mono.CSharp
                                if (ArrayComparer.IsEqual (GetPublicKeyToken (), atoken))
                                        continue;
 
+                               Report.SymbolRelatedToPreviousError (a.Location);
                                Report.Error (281,
                                        "Friend access was granted to `{0}', but the output assembly is named `{1}'. Try adding a reference to `{0}' or change the output assembly name to match it",
                                        attr.FullName, FullName);
@@ -375,7 +408,7 @@ namespace Mono.CSharp
                {
                        var an = new AssemblyName (name);
 
-                       if (public_key != null && RootContext.Target != Target.Module) {
+                       if (public_key != null && Compiler.Settings.Target != Target.Module) {
                                if (delay_sign) {
                                        an.SetPublicKey (public_key);
                                } else {
@@ -406,27 +439,23 @@ namespace Mono.CSharp
                        return Builder.DefineDynamicModule (module_name, module_name, false);
                }
 
-               public void Emit ()
+               public virtual void Emit ()
                {
-                       if (RootContext.Target == Target.Module) {
+                       if (Compiler.Settings.Target == Target.Module) {
                                module_target_attrs = new AssemblyAttributesPlaceholder (module, name);
-                               module_target_attrs.CreateType ();
-                               module_target_attrs.DefineType ();
+                               module_target_attrs.CreateContainer ();
+                               module_target_attrs.DefineContainer ();
                                module_target_attrs.Define ();
                                module.AddCompilerGeneratedClass (module_target_attrs);
                        } else if (added_modules != null) {
                                ReadModulesAssemblyAttributes ();
                        }
 
-                       if (RootContext.GenerateDebugInfo) {
-                               symbol_writer = new MonoSymbolWriter (file_name);
-
-                               // TODO: global variables
-                               Location.DefineSymbolDocuments (symbol_writer);
-                               SymbolWriter.symwriter = symbol_writer;
+                       if (Compiler.Settings.GenerateDebugInfo) {
+                               symbol_writer = new MonoSymbolFile ();
                        }
 
-                       module.Emit ();
+                       module.EmitContainer ();
 
                        if (module.HasExtensionMethod) {
                                var pa = module.PredefinedAttributes.Extension;
@@ -438,10 +467,10 @@ namespace Mono.CSharp
                        if (!wrap_non_exception_throws_custom) {
                                PredefinedAttribute pa = module.PredefinedAttributes.RuntimeCompatibility;
                                if (pa.IsDefined && pa.ResolveBuilder ()) {
-                                       var prop = pa.GetProperty ("WrapNonExceptionThrows", TypeManager.bool_type, Location.Null);
+                                       var prop = module.PredefinedMembers.RuntimeCompatibilityWrapNonExceptionThrows.Get ();
                                        if (prop != null) {
-                                               AttributeEncoder encoder = new AttributeEncoder (false);
-                                               encoder.EncodeNamedPropertyArgument (prop, new BoolLiteral (true, Location.Null));
+                                               AttributeEncoder encoder = new AttributeEncoder ();
+                                               encoder.EncodeNamedPropertyArgument (prop, new BoolLiteral (Compiler.BuiltinTypes, true, Location.Null));
                                                SetCustomAttribute (pa.Constructor, encoder.ToArray ());
                                        }
                                }
@@ -453,11 +482,7 @@ namespace Mono.CSharp
                                        Builder.__AddDeclarativeSecurity (entry);
                                }
 #else
-                               var args = new PermissionSet[3];
-                               declarative_security.TryGetValue (SecurityAction.RequestMinimum, out args[0]);
-                               declarative_security.TryGetValue (SecurityAction.RequestOptional, out args[1]);
-                               declarative_security.TryGetValue (SecurityAction.RequestRefuse, out args[2]);
-                               builder_extra.AddPermissionRequests (args);
+                               throw new NotSupportedException ("Assembly-level security");
 #endif
                        }
 
@@ -475,7 +500,7 @@ namespace Mono.CSharp
                        byte[] hash = ha.ComputeHash (public_key);
                        // we need the last 8 bytes in reverse order
                        public_key_token = new byte[8];
-                       Array.Copy (hash, (hash.Length - 8), public_key_token, 0, 8);
+                       Buffer.BlockCopy (hash, hash.Length - 8, public_key_token, 0, 8);
                        Array.Reverse (public_key_token, 0, 8);
                        return public_key_token;
                }
@@ -502,7 +527,7 @@ namespace Mono.CSharp
                        // For attribute based KeyFile do additional lookup
                        // in output assembly path
                        //
-                       if (!key_file_exists && RootContext.StrongNameKeyFile == null) {
+                       if (!key_file_exists && Compiler.Settings.StrongNameKeyFile == null) {
                                //
                                // The key file can be relative to output assembly
                                //
@@ -534,11 +559,19 @@ namespace Mono.CSharp
                                        byte[] publickey = CryptoConvert.ToCapiPublicKeyBlob (rsa);
 
                                        // AssemblyName.SetPublicKey requires an additional header
-                                       byte[] publicKeyHeader = new byte[12] { 0x00, 0x24, 0x00, 0x00, 0x04, 0x80, 0x00, 0x00, 0x94, 0x00, 0x00, 0x00 };
+                                       byte[] publicKeyHeader = new byte[8] { 0x00, 0x24, 0x00, 0x00, 0x04, 0x80, 0x00, 0x00 };
 
                                        // Encode public key
                                        public_key = new byte[12 + publickey.Length];
-                                       Buffer.BlockCopy (publicKeyHeader, 0, public_key, 0, 12);
+                                       Buffer.BlockCopy (publicKeyHeader, 0, public_key, 0, publicKeyHeader.Length);
+
+                                       // Length of Public Key (in bytes)
+                                       int lastPart = public_key.Length - 12;
+                                       public_key[8] = (byte) (lastPart & 0xFF);
+                                       public_key[9] = (byte) ((lastPart >> 8) & 0xFF);
+                                       public_key[10] = (byte) ((lastPart >> 16) & 0xFF);
+                                       public_key[11] = (byte) ((lastPart >> 24) & 0xFF);
+
                                        Buffer.BlockCopy (publickey, 0, public_key, 12, publickey.Length);
                                } catch {
                                        Error_AssemblySigning ("The specified key file `" + keyFile + "' has incorrect format");
@@ -569,24 +602,25 @@ namespace Mono.CSharp
 
                public void Resolve ()
                {
-                       if (RootContext.Unsafe) {
+                       if (Compiler.Settings.Unsafe && module.PredefinedTypes.SecurityAction.Define ()) {
                                //
                                // Emits [assembly: SecurityPermissionAttribute (SecurityAction.RequestMinimum, SkipVerification = true)]
                                // when -unsafe option was specified
                                //
-                               
                                Location loc = Location.Null;
 
                                MemberAccess system_security_permissions = new MemberAccess (new MemberAccess (
                                        new QualifiedAliasMember (QualifiedAliasMember.GlobalAlias, "System", loc), "Security", loc), "Permissions", loc);
 
+                               var req_min = module.PredefinedMembers.SecurityActionRequestMinimum.Resolve (loc);
+
                                Arguments pos = new Arguments (1);
-                               pos.Add (new Argument (new MemberAccess (new MemberAccess (system_security_permissions, "SecurityAction", loc), "RequestMinimum")));
+                               pos.Add (new Argument (req_min.GetConstant (null)));
 
                                Arguments named = new Arguments (1);
-                               named.Add (new NamedArgument ("SkipVerification", loc, new BoolLiteral (true, loc)));
+                               named.Add (new NamedArgument ("SkipVerification", loc, new BoolLiteral (Compiler.BuiltinTypes, true, loc)));
 
-                               GlobalAttribute g = new GlobalAttribute (new NamespaceEntry (module, null, null, null), "assembly",
+                               Attribute g = new Attribute ("assembly",
                                        new MemberAccess (system_security_permissions, "SecurityPermissionAttribute"),
                                        new Arguments[] { pos, named }, loc, false);
                                g.AttachTo (module, module);
@@ -609,7 +643,7 @@ namespace Mono.CSharp
                                is_cls_compliant = cls_attribute.GetClsCompliantAttributeValue ();
                        }
 
-                       if (added_modules != null && RootContext.VerifyClsCompliance && is_cls_compliant) {
+                       if (added_modules != null && Compiler.Settings.VerifyClsCompliance && is_cls_compliant) {
                                foreach (var m in added_modules) {
                                        if (!m.IsCLSCompliant) {
                                                Report.Error (3013,
@@ -646,7 +680,7 @@ namespace Mono.CSharp
                                        case "AssemblyKeyFile":
                                        case "AssemblyKeyFileAttribute":
                                        case "System.Reflection.AssemblyKeyFileAttribute":
-                                               if (RootContext.StrongNameKeyFile != null) {
+                                               if (Compiler.Settings.StrongNameKeyFile != null) {
                                                        Report.SymbolRelatedToPreviousError (a.Location, a.GetSignatureForError ());
                                                        Report.Warning (1616, 1, "Option `{0}' overrides attribute `{1}' given in a source file or added module",
                                                                        "keyfile", "System.Reflection.AssemblyKeyFileAttribute");
@@ -661,7 +695,7 @@ namespace Mono.CSharp
                                        case "AssemblyKeyName":
                                        case "AssemblyKeyNameAttribute":
                                        case "System.Reflection.AssemblyKeyNameAttribute":
-                                               if (RootContext.StrongNameKeyContainer != null) {
+                                               if (Compiler.Settings.StrongNameKeyContainer != null) {
                                                        Report.SymbolRelatedToPreviousError (a.Location, a.GetSignatureForError ());
                                                        Report.Warning (1616, 1, "Option `{0}' overrides attribute `{1}' given in a source file or added module",
                                                                        "keycontainer", "System.Reflection.AssemblyKeyNameAttribute");
@@ -707,28 +741,38 @@ namespace Mono.CSharp
                        //
                        // Add Win32 resources
                        //
-                       if (RootContext.Win32ResourceFile != null) {
-                               Builder.DefineUnmanagedResource (RootContext.Win32ResourceFile);
+                       if (Compiler.Settings.Win32ResourceFile != null) {
+                               Builder.DefineUnmanagedResource (Compiler.Settings.Win32ResourceFile);
                        } else {
                                Builder.DefineVersionInfoResource ();
                        }
 
-                       if (RootContext.Win32IconFile != null) {
-                               builder_extra.DefineWin32IconResource (RootContext.Win32IconFile);
+                       if (Compiler.Settings.Win32IconFile != null) {
+                               builder_extra.DefineWin32IconResource (Compiler.Settings.Win32IconFile);
                        }
 
-                       if (RootContext.Resources != null) {
-                               if (RootContext.Target == Target.Module) {
+                       if (Compiler.Settings.Resources != null) {
+                               if (Compiler.Settings.Target == Target.Module) {
                                        Report.Error (1507, "Cannot link resource file when building a module");
                                } else {
-                                       foreach (var res in RootContext.Resources) {
+                                       int counter = 0;
+                                       foreach (var res in Compiler.Settings.Resources) {
                                                if (!File.Exists (res.FileName)) {
                                                        Report.Error (1566, "Error reading resource file `{0}'", res.FileName);
                                                        continue;
                                                }
 
                                                if (res.IsEmbeded) {
-                                                       var stream = File.OpenRead (res.FileName);
+                                                       Stream stream;
+                                                       if (counter++ < 10) {
+                                                               stream = File.OpenRead (res.FileName);
+                                                       } else {
+                                                               // TODO: SRE API requires resource stream to be available during AssemblyBuilder::Save
+                                                               // we workaround it by reading everything into memory to compile projects with
+                                                               // many embedded resource (over 3500) references
+                                                               stream = new MemoryStream (File.ReadAllBytes (res.FileName));
+                                                       }
+
                                                        module.Builder.DefineManifestResource (res.Name, stream, res.Attributes);
                                                } else {
                                                        Builder.AddResourceFile (res.Name, Path.GetFileName (res.FileName), res.Attributes);
@@ -740,31 +784,45 @@ namespace Mono.CSharp
 
                public void Save ()
                {
-                       PortableExecutableKinds pekind;
+                       PortableExecutableKinds pekind = PortableExecutableKinds.ILOnly;
                        ImageFileMachine machine;
 
-                       switch (RootContext.Platform) {
+                       switch (Compiler.Settings.Platform) {
                        case Platform.X86:
-                               pekind = PortableExecutableKinds.Required32Bit | PortableExecutableKinds.ILOnly;
+                               pekind |= PortableExecutableKinds.Required32Bit;
                                machine = ImageFileMachine.I386;
                                break;
                        case Platform.X64:
-                               pekind = PortableExecutableKinds.ILOnly;
+                               pekind |= PortableExecutableKinds.PE32Plus;
                                machine = ImageFileMachine.AMD64;
                                break;
                        case Platform.IA64:
-                               pekind = PortableExecutableKinds.ILOnly;
                                machine = ImageFileMachine.IA64;
                                break;
+                       case Platform.AnyCPU32Preferred:
+#if STATIC
+                               pekind |= PortableExecutableKinds.Preferred32Bit;
+                               machine = ImageFileMachine.I386;
+                               break;
+#else
+                               throw new NotSupportedException ();
+#endif
+                       case Platform.Arm:
+#if STATIC
+                               machine = ImageFileMachine.ARM;
+                               break;
+#else
+                               throw new NotSupportedException ();
+#endif
                        case Platform.AnyCPU:
                        default:
-                               pekind = PortableExecutableKinds.ILOnly;
                                machine = ImageFileMachine.I386;
                                break;
                        }
 
+                       Compiler.TimeReporter.Start (TimeReporter.TimerType.OutputSave);
                        try {
-                               if (RootContext.Target == Target.Module) {
+                               if (Compiler.Settings.Target == Target.Module) {
                                        SaveModule (pekind, machine);
                                } else {
                                        Builder.Save (module.Builder.ScopeName, pekind, machine);
@@ -772,11 +830,28 @@ namespace Mono.CSharp
                        } catch (Exception e) {
                                Report.Error (16, "Could not write to file `" + name + "', cause: " + e.Message);
                        }
+                       Compiler.TimeReporter.Stop (TimeReporter.TimerType.OutputSave);
 
                        // Save debug symbols file
-                       if (symbol_writer != null) {
+                       if (symbol_writer != null && Compiler.Report.Errors == 0) {
                                // TODO: it should run in parallel
-                               symbol_writer.WriteSymbolFile (SymbolWriter.GetGuid (module.Builder));
+                               Compiler.TimeReporter.Start (TimeReporter.TimerType.DebugSave);
+
+                               var filename = file_name + ".mdb";
+                               try {
+                                       // We mmap the file, so unlink the previous version since it may be in use
+                                       File.Delete (filename);
+                               } catch {
+                                       // We can safely ignore
+                               }
+
+                               module.WriteDebugSymbol (symbol_writer);
+
+                               using (FileStream fs = new FileStream (filename, FileMode.Create, FileAccess.Write)) {
+                                       symbol_writer.CreateSymbolFile (module.Builder.ModuleVersionId, fs);
+                               }
+
+                               Compiler.TimeReporter.Stop (TimeReporter.TimerType.DebugSave);
                        }
                }
 
@@ -795,8 +870,8 @@ namespace Mono.CSharp
 
                void SetEntryPoint ()
                {
-                       if (!RootContext.NeedsEntryPoint) {
-                               if (RootContext.MainClass != null)
+                       if (!Compiler.Settings.NeedsEntryPoint) {
+                               if (Compiler.Settings.MainClass != null)
                                        Report.Error (2017, "Cannot specify -main if building a module or library");
 
                                return;
@@ -804,7 +879,7 @@ namespace Mono.CSharp
 
                        PEFileKinds file_kind;
 
-                       switch (RootContext.Target) {
+                       switch (Compiler.Settings.Target) {
                        case Target.Library:
                        case Target.Module:
                                file_kind = PEFileKinds.Dll;
@@ -818,26 +893,24 @@ namespace Mono.CSharp
                        }
 
                        if (entry_point == null) {
-                               if (RootContext.MainClass != null) {
-                                       // TODO: Should use MemberCache
-                                       DeclSpace main_cont = module.GetDefinition (RootContext.MainClass) as DeclSpace;
-                                       if (main_cont == null) {
-                                               Report.Error (1555, "Could not find `{0}' specified for Main method", RootContext.MainClass);
+                               string main_class = Compiler.Settings.MainClass;
+                               if (main_class != null) {
+                                       // TODO: Handle dotted names
+                                       var texpr = module.GlobalRootNamespace.LookupType (module, main_class, 0, LookupMode.Probing, Location.Null);
+                                       if (texpr == null) {
+                                               Report.Error (1555, "Could not find `{0}' specified for Main method", main_class);
                                                return;
                                        }
 
-                                       if (!(main_cont is ClassOrStruct)) {
-                                               Report.Error (1556, "`{0}' specified for Main method must be a valid class or struct", RootContext.MainClass);
+                                       var mtype = texpr.Type.MemberDefinition as ClassOrStruct;
+                                       if (mtype == null) {
+                                               Report.Error (1556, "`{0}' specified for Main method must be a valid class or struct", main_class);
                                                return;
                                        }
 
-                                       Report.Error (1558, main_cont.Location, "`{0}' does not have a suitable static Main method", main_cont.GetSignatureForError ());
-                                       return;
-                               }
-
-                               if (Report.Errors == 0) {
+                                       Report.Error (1558, mtype.Location, "`{0}' does not have a suitable static Main method", mtype.GetSignatureForError ());
+                               } else {
                                        string pname = file_name == null ? name : Path.GetFileName (file_name);
-
                                        Report.Error (5001, "Program `{0}' does not contain a static `Main' method suitable for an entry point",
                                                pname);
                                }
@@ -860,26 +933,48 @@ namespace Mono.CSharp
                        Report.Error (1548, "Error during assembly signing. " + text);
                }
 
-               static Version IsValidAssemblyVersion (string version)
+               public bool IsFriendAssemblyTo (IAssemblyDefinition assembly)
                {
-                       Version v;
-                       try {
-                               v = new Version (version);
-                       } catch {
-                               try {
-                                       int major = int.Parse (version, CultureInfo.InvariantCulture);
-                                       v = new Version (major, 0);
-                               } catch {
+                       return false;
+               }
+
+               static Version IsValidAssemblyVersion (string version, bool allowGenerated)
+               {
+                       string[] parts = version.Split ('.');
+                       if (parts.Length < 1 || parts.Length > 4)
+                               return null;
+
+                       var values = new int[4];
+                       for (int i = 0; i < parts.Length; ++i) {
+                               if (!int.TryParse (parts[i], out values[i])) {
+                                       if (parts[i].Length == 1 && parts[i][0] == '*' && allowGenerated) {
+                                               if (i == 2) {
+                                                       // Nothing can follow *
+                                                       if (parts.Length > 3)
+                                                               return null;
+
+                                                       // Generate Build value based on days since 1/1/2000
+                                                       TimeSpan days = DateTime.Today - new DateTime (2000, 1, 1);
+                                                       values[i] = System.Math.Max (days.Days, 0);
+                                                       i = 3;
+                                               }
+
+                                               if (i == 3) {
+                                                       // Generate Revision value based on every other second today
+                                                       var seconds = DateTime.Now - DateTime.Today;
+                                                       values[i] = (int) seconds.TotalSeconds / 2;
+                                                       continue;
+                                               }
+                                       }
+
                                        return null;
                                }
-                       }
 
-                       foreach (int candidate in new int [] { v.Major, v.Minor, v.Build, v.Revision }) {
-                               if (candidate > ushort.MaxValue)
+                               if (values[i] > ushort.MaxValue)
                                        return null;
                        }
 
-                       return new Version (v.Major, System.Math.Max (0, v.Minor), System.Math.Max (0, v.Build), System.Math.Max (0, v.Revision));
+                       return new Version (values[0], values[1], values[2], values[3]);
                }
        }
 
@@ -925,7 +1020,7 @@ namespace Mono.CSharp
                public AssemblyAttributesPlaceholder (ModuleContainer parent, string outputName)
                        : base (parent, new MemberName (GetGeneratedName (outputName)), Modifiers.STATIC)
                {
-                       assembly = new Field (this, new TypeExpression (TypeManager.object_type, Location), Modifiers.PUBLIC | Modifiers.STATIC,
+                       assembly = new Field (this, new TypeExpression (parent.Compiler.BuiltinTypes.Object, Location), Modifiers.PUBLIC | Modifiers.STATIC,
                                new MemberName (AssemblyFieldName), null);
 
                        AddField (assembly);
@@ -1003,28 +1098,19 @@ namespace Mono.CSharp
                protected readonly CompilerContext compiler;
 
                protected readonly List<string> paths;
-               readonly string[] default_references;
 
                public AssemblyReferencesLoader (CompilerContext compiler)
                {
                        this.compiler = compiler;
 
-                       if (RootContext.LoadDefaultReferences)
-                               default_references = GetDefaultReferences ();
-                       else
-                               default_references = new string[0];
-
                        paths = new List<string> ();
-                       paths.AddRange (RootContext.ReferencesLookupPaths);
-                       paths.Add (GetSystemDir ());
+                       paths.AddRange (compiler.Settings.ReferencesLookupPaths);
                        paths.Add (Directory.GetCurrentDirectory ());
-                       // TODO: should remove redundant paths
                }
 
                public abstract bool HasObjectType (T assembly);
                protected abstract string[] GetDefaultReferences ();
-               public abstract T LoadAssemblyFile (string fileName);
-               public abstract T LoadAssemblyDefault (string assembly);
+               public abstract T LoadAssemblyFile (string fileName, bool isImplicitReference);
                public abstract void LoadReferences (ModuleContainer module);
 
                protected void Error_FileNotFound (string fileName)
@@ -1051,36 +1137,24 @@ namespace Mono.CSharp
                                fileName);
                }
 
-               //
-               // Returns the directory where the system assemblies are installed
-               //
-               static string GetSystemDir ()
-               {
-                       return Path.GetDirectoryName (typeof (object).Assembly.Location);
-               }
-
                protected void LoadReferencesCore (ModuleContainer module, out T corlib_assembly, out List<Tuple<RootNamespace, T>> loaded)
                {
+                       compiler.TimeReporter.Start (TimeReporter.TimerType.ReferencesLoading);
+
                        loaded = new List<Tuple<RootNamespace, T>> ();
 
                        //
                        // Load mscorlib.dll as the first
                        //
-                       if (RootContext.StdLib) {
-                               corlib_assembly = LoadAssemblyDefault ("mscorlib.dll");
+                       if (module.Compiler.Settings.StdLib) {
+                               corlib_assembly = LoadAssemblyFile ("mscorlib.dll", true);
                        } else {
                                corlib_assembly = default (T);
                        }
 
                        T a;
-                       foreach (string r in default_references) {
-                               a = LoadAssemblyDefault (r);
-                               if (a != null)
-                                       loaded.Add (Tuple.Create (module.GlobalRootNamespace, a));
-                       }
-
-                       foreach (string r in RootContext.AssemblyReferences) {
-                               a = LoadAssemblyFile (r);
+                       foreach (string r in module.Compiler.Settings.AssemblyReferences) {
+                               a = LoadAssemblyFile (r, false);
                                if (a == null || EqualityComparer<T>.Default.Equals (a, corlib_assembly))
                                        continue;
 
@@ -1097,8 +1171,8 @@ namespace Mono.CSharp
                                loaded.Add (key);
                        }
 
-                       foreach (var entry in RootContext.AssemblyReferencesAliases) {
-                               a = LoadAssemblyFile (entry.Item2);
+                       foreach (var entry in module.Compiler.Settings.AssemblyReferencesAliases) {
+                               a = LoadAssemblyFile (entry.Item2, false);
                                if (a == null)
                                        continue;
 
@@ -1108,6 +1182,22 @@ namespace Mono.CSharp
 
                                loaded.Add (key);
                        }
+
+                       if (compiler.Settings.LoadDefaultReferences) {
+                               foreach (string r in GetDefaultReferences ()) {
+                                       a = LoadAssemblyFile (r, true);
+                                       if (a == null)
+                                               continue;
+
+                                       var key = Tuple.Create (module.GlobalRootNamespace, a);
+                                       if (loaded.Contains (key))
+                                               continue;
+
+                                       loaded.Add (key);
+                               }
+                       }
+
+                       compiler.TimeReporter.Stop (TimeReporter.TimerType.ReferencesLoading);
                }
        }
 }