[xbuild] Add new reserved properties $(MSBuildThisFile*).
[mono.git] / mcs / mcs / assembly.cs
index 1f006cb1108794bf9b9ad13debadd9113855133e..c45ad581cdc1c71d85248ce737b1a50a06972f27 100644 (file)
@@ -14,15 +14,22 @@ using System;
 using System.IO;
 using System.Collections.Generic;
 using System.Globalization;
-using System.Reflection;
-using System.Reflection.Emit;
 using System.Security;
 using System.Security.Cryptography;
 using System.Security.Permissions;
-
 using Mono.Security.Cryptography;
 using Mono.CompilerServices.SymbolWriter;
 
+#if STATIC
+using IKVM.Reflection;
+using IKVM.Reflection.Emit;
+using SecurityType = System.Collections.Generic.List<IKVM.Reflection.Emit.CustomAttributeBuilder>;
+#else
+using SecurityType = System.Collections.Generic.Dictionary<System.Security.Permissions.SecurityAction, System.Security.PermissionSet>;
+using System.Reflection;
+using System.Reflection.Emit;
+#endif
+
 namespace Mono.CSharp
 {
        public interface IAssemblyDefinition
@@ -30,25 +37,27 @@ 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 class AssemblyDefinition : IAssemblyDefinition
+       public abstract class AssemblyDefinition : IAssemblyDefinition
        {
                // TODO: make it private and move all builder based methods here
                public AssemblyBuilder Builder;
-               AssemblyBuilderExtension builder_extra;
+               protected AssemblyBuilderExtension builder_extra;
                MonoSymbolWriter symbol_writer;
 
                bool is_cls_compliant;
                bool wrap_non_exception_throws;
                bool wrap_non_exception_throws_custom;
 
-               ModuleContainer module;
-               string name;
-               string file_name;
+               protected ModuleContainer module;
+               readonly string name;
+               protected readonly string file_name;
 
                byte[] public_key, public_key_token;
                bool delay_sign;
@@ -60,37 +69,31 @@ namespace Mono.CSharp
                Attribute cls_attribute;
                Method entry_point;
 
-               List<ImportedModuleDefinition> added_modules;
-               Dictionary<SecurityAction, PermissionSet> declarative_security;
+               protected List<ImportedModuleDefinition> added_modules;
+               SecurityType declarative_security;
                Dictionary<ITypeDefinition, Attribute> emitted_forwarders;
                AssemblyAttributesPlaceholder module_target_attrs;
 
-               //
-               // In-memory only assembly container
-               //
-               public AssemblyDefinition (ModuleContainer module, string name)
+               protected AssemblyDefinition (ModuleContainer module, string name)
                {
                        this.module = module;
                        this.name = Path.GetFileNameWithoutExtension (name);
 
                        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);
                        }
                }
 
-               //
-               // Assembly container with file output
-               //
-               public AssemblyDefinition (ModuleContainer module, string name, string fileName)
+               protected AssemblyDefinition (ModuleContainer module, string name, string fileName)
                        : this (module, name)
                {
                        this.file_name = fileName;
@@ -142,7 +145,7 @@ namespace Mono.CSharp
 
                // TODO: This should not exist here but will require more changes
                public MetadataImporter Importer {
-                       get ; set;
+                   get; set;
                }
 
                public bool IsCLSCompliant {
@@ -151,6 +154,12 @@ namespace Mono.CSharp
                        }
                }
 
+               bool IAssemblyDefinition.IsMissing {
+                       get {
+                               return false;
+                       }
+               }
+
                public string Name {
                        get {
                                return name;
@@ -163,7 +172,7 @@ namespace Mono.CSharp
                        }
                }
 
-               Report Report {
+               protected Report Report {
                        get {
                                return Compiler.Report;
                        }
@@ -171,24 +180,18 @@ namespace Mono.CSharp
 
                #endregion
 
-               public void AddModule (string moduleFile)
+               public void AddModule (ImportedModuleDefinition module)
                {
-                       var mod = builder_extra.AddModule (moduleFile);
-                       var imported = Importer.ImportModule (mod, module.GlobalRootNamespace);
-
                        if (added_modules == null) {
                                added_modules = new List<ImportedModuleDefinition> ();
-                               added_modules.Add (imported);
+                               added_modules.Add (module);
                        }
-               }               
+               }
 
                public void ApplyAttributeBuilder (Attribute a, MethodSpec ctor, byte[] cdata, PredefinedAttributes pa)
                {
                        if (a.IsValidSecurityAttribute ()) {
-                               if (declarative_security == null)
-                                       declarative_security = new Dictionary<SecurityAction, PermissionSet> ();
-
-                               a.ExtractSecurityPermissionSet (declarative_security);
+                               a.ExtractSecurityPermissionSet (ctor, ref declarative_security);
                                return;
                        }
 
@@ -197,7 +200,7 @@ 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;
                                }
@@ -205,7 +208,7 @@ 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);
@@ -219,13 +222,13 @@ 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);
@@ -241,7 +244,7 @@ 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);
@@ -261,7 +264,7 @@ 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);
@@ -301,7 +304,7 @@ namespace Mono.CSharp
                                        return;
                                }
 
-                               builder_extra.AddTypeForwarder (t, a.Location);
+                               builder_extra.AddTypeForwarder (t.GetDefinition (), a.Location);
                                return;
                        }
 
@@ -341,8 +344,16 @@ namespace Mono.CSharp
                                }
                        } 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);
                }
 
@@ -355,7 +366,11 @@ 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);
@@ -370,22 +385,18 @@ 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);
                        }
                }
 
-               //
-               // Initializes the code generator
-               //
-               public bool Create (AppDomain domain, AssemblyBuilderAccess access)
+               protected AssemblyName CreateAssemblyName ()
                {
-                       ResolveAssemblySecurityAttributes ();
-
                        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 {
@@ -399,28 +410,13 @@ namespace Mono.CSharp
                                }
                        }
 
-                       try {
-                               Builder = file_name == null ?
-                                       domain.DefineDynamicAssembly (an, access) :
-                                       domain.DefineDynamicAssembly (an, access, Dirname (file_name));
-                       } catch (ArgumentException) {
-                               // specified key may not be exportable outside it's container
-                               if (RootContext.StrongNameKeyContainer != null) {
-                                       Report.Error (1548, "Could not access the key inside the container `" +
-                                               RootContext.StrongNameKeyContainer + "'.");
-                               }
-                               throw;
-                       }
-
-                       builder_extra = new AssemblyBuilderMonoSpecific (Builder, Compiler);
-                       return true;
+                       return an;
                }
 
-               public ModuleBuilder CreateModuleBuilder ()
+               public virtual ModuleBuilder CreateModuleBuilder ()
                {
-                       // Creates transient module
                        if (file_name == null)
-                               return Builder.DefineDynamicModule (name, false);
+                               throw new NotSupportedException ("transient module in static assembly");
 
                        var module_name = Path.GetFileName (file_name);
 
@@ -431,23 +427,9 @@ namespace Mono.CSharp
                        return Builder.DefineDynamicModule (module_name, module_name, false);
                }
 
-               static string Dirname (string name)
-               {
-                       int pos = name.LastIndexOf ('/');
-
-                       if (pos != -1)
-                               return name.Substring (0, pos);
-
-                       pos = name.LastIndexOf ('\\');
-                       if (pos != -1)
-                               return name.Substring (0, pos);
-
-                       return ".";
-               }
-
-               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 ();
@@ -457,7 +439,7 @@ namespace Mono.CSharp
                                ReadModulesAssemblyAttributes ();
                        }
 
-                       if (RootContext.GenerateDebugInfo) {
+                       if (Compiler.Settings.GenerateDebugInfo) {
                                symbol_writer = new MonoSymbolWriter (file_name);
 
                                // TODO: global variables
@@ -479,7 +461,7 @@ namespace Mono.CSharp
                                if (pa.IsDefined && pa.ResolveBuilder ()) {
                                        var prop = pa.GetProperty ("WrapNonExceptionThrows", TypeManager.bool_type, Location.Null);
                                        if (prop != null) {
-                                               AttributeEncoder encoder = new AttributeEncoder (false);
+                                               AttributeEncoder encoder = new AttributeEncoder ();
                                                encoder.EncodeNamedPropertyArgument (prop, new BoolLiteral (true, Location.Null));
                                                SetCustomAttribute (pa.Constructor, encoder.ToArray ());
                                        }
@@ -487,11 +469,17 @@ namespace Mono.CSharp
                        }
 
                        if (declarative_security != null) {
+#if STATIC
+                               foreach (var entry in declarative_security) {
+                                       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);
+#endif
                        }
 
                        CheckReferencesPublicToken ();
@@ -508,7 +496,7 @@ 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;
                }
@@ -535,7 +523,7 @@ 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
                                //
@@ -567,11 +555,19 @@ 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");
@@ -602,19 +598,20 @@ 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 = (ConstSpec) module.PredefinedTypes.SecurityAction.GetField ("RequestMinimum", module.PredefinedTypes.SecurityAction.TypeSpec, 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)));
@@ -623,10 +620,9 @@ namespace Mono.CSharp
                                        new MemberAccess (system_security_permissions, "SecurityPermissionAttribute"),
                                        new Arguments[] { pos, named }, loc, false);
                                g.AttachTo (module, module);
-
-                               if (g.Resolve () != null) {
-                                       declarative_security = new Dictionary<SecurityAction, PermissionSet> ();
-                                       g.ExtractSecurityPermissionSet (declarative_security);
+                               var ctor = g.Resolve ();
+                               if (ctor != null) {
+                                       g.ExtractSecurityPermissionSet (ctor, ref declarative_security);
                                }
                        }
 
@@ -643,7 +639,7 @@ 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,
@@ -661,7 +657,7 @@ namespace Mono.CSharp
                        }
                }
 
-               void ResolveAssemblySecurityAttributes ()
+               protected void ResolveAssemblySecurityAttributes ()
                {
                        string key_file = null;
                        string key_container = null;
@@ -680,7 +676,7 @@ 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");
@@ -695,7 +691,7 @@ 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");
@@ -741,28 +737,38 @@ 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);
@@ -777,7 +783,7 @@ namespace Mono.CSharp
                        PortableExecutableKinds pekind;
                        ImageFileMachine machine;
 
-                       switch (RootContext.Platform) {
+                       switch (Compiler.Settings.Platform) {
                        case Platform.X86:
                                pekind = PortableExecutableKinds.Required32Bit | PortableExecutableKinds.ILOnly;
                                machine = ImageFileMachine.I386;
@@ -797,23 +803,32 @@ namespace Mono.CSharp
                                break;
                        }
 
-                       if (RootContext.Target == Target.Module) {
-                               builder_extra.SetModuleTarget ();
-                       }
-
+                       Compiler.TimeReporter.Start (TimeReporter.TimerType.OutputSave);
                        try {
-                               Builder.Save (module.Builder.ScopeName, pekind, machine);
+                               if (Compiler.Settings.Target == Target.Module) {
+                                       SaveModule (pekind, machine);
+                               } else {
+                                       Builder.Save (module.Builder.ScopeName, pekind, machine);
+                               }
                        } 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) {
                                // TODO: it should run in parallel
+                               Compiler.TimeReporter.Start (TimeReporter.TimerType.DebugSave);
                                symbol_writer.WriteSymbolFile (SymbolWriter.GetGuid (module.Builder));
+                               Compiler.TimeReporter.Stop (TimeReporter.TimerType.DebugSave);
                        }
                }
 
+               protected virtual void SaveModule (PortableExecutableKinds pekind, ImageFileMachine machine)
+               {
+                       Report.RuntimeMissingSupport (Location.Null, "-target:module");
+               }
+
                void SetCustomAttribute (MethodSpec ctor, byte[] data)
                {
                        if (module_target_attrs != null)
@@ -824,8 +839,8 @@ 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;
@@ -833,7 +848,7 @@ namespace Mono.CSharp
 
                        PEFileKinds file_kind;
 
-                       switch (RootContext.Target) {
+                       switch (Compiler.Settings.Target) {
                        case Target.Library:
                        case Target.Module:
                                file_kind = PEFileKinds.Dll;
@@ -847,16 +862,16 @@ namespace Mono.CSharp
                        }
 
                        if (entry_point == null) {
-                               if (RootContext.MainClass != null) {
+                               if (Compiler.Settings.MainClass != null) {
                                        // TODO: Should use MemberCache
-                                       DeclSpace main_cont = module.GetDefinition (RootContext.MainClass) as DeclSpace;
+                                       DeclSpace main_cont = module.GetDefinition (Compiler.Settings.MainClass) as DeclSpace;
                                        if (main_cont == null) {
-                                               Report.Error (1555, "Could not find `{0}' specified for Main method", RootContext.MainClass);
+                                               Report.Error (1555, "Could not find `{0}' specified for Main method", Compiler.Settings.MainClass);
                                                return;
                                        }
 
                                        if (!(main_cont is ClassOrStruct)) {
-                                               Report.Error (1556, "`{0}' specified for Main method must be a valid class or struct", RootContext.MainClass);
+                                               Report.Error (1556, "`{0}' specified for Main method must be a valid class or struct", Compiler.Settings.MainClass);
                                                return;
                                        }
 
@@ -889,26 +904,48 @@ namespace Mono.CSharp
                        Report.Error (1548, "Error during assembly signing. " + text);
                }
 
-               static string 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)).ToString (4);
+                       return new Version (values[0], values[1], values[2], values[3]);
                }
        }
 
@@ -976,7 +1013,7 @@ namespace Mono.CSharp
        // compiler. This is a default implementation for framework System.Reflection.Emit
        // which does not implement any of the methods
        //
-       class AssemblyBuilderExtension
+       public class AssemblyBuilderExtension
        {
                readonly CompilerContext ctx;
 
@@ -985,7 +1022,7 @@ namespace Mono.CSharp
                        this.ctx = ctx;
                }
 
-               public virtual Module AddModule (string module)
+               public virtual System.Reflection.Module AddModule (string module)
                {
                        ctx.Report.RuntimeMissingSupport (Location.Null, "-addmodule");
                        return null;
@@ -1021,14 +1058,118 @@ namespace Mono.CSharp
                        ctx.Report.RuntimeMissingSupport (loc, "AssemblyFlagsAttribute");
                }
 
-               public virtual void SetVersion (string version, Location loc)
+               public virtual void SetVersion (Version version, Location loc)
                {
                        ctx.Report.RuntimeMissingSupport (loc, "AssemblyVersionAttribute");
                }
+       }
+
+       abstract class AssemblyReferencesLoader<T>
+       {
+               protected readonly CompilerContext compiler;
+
+               protected readonly List<string> paths;
+
+               public AssemblyReferencesLoader (CompilerContext compiler)
+               {
+                       this.compiler = compiler;
+
+                       paths = new List<string> ();
+                       paths.AddRange (compiler.Settings.ReferencesLookupPaths);
+                       paths.Add (Directory.GetCurrentDirectory ());
+               }
 
-               public virtual void SetModuleTarget ()
+               public abstract bool HasObjectType (T assembly);
+               protected abstract string[] GetDefaultReferences ();
+               public abstract T LoadAssemblyFile (string fileName);
+               public abstract T LoadAssemblyDefault (string assembly);
+               public abstract void LoadReferences (ModuleContainer module);
+
+               protected void Error_FileNotFound (string fileName)
+               {
+                       compiler.Report.Error (6, "Metadata file `{0}' could not be found", fileName);
+               }
+
+               protected void Error_FileCorrupted (string fileName)
+               {
+                       compiler.Report.Error (9, "Metadata file `{0}' does not contain valid metadata", fileName);
+               }
+
+               protected void Error_AssemblyIsModule (string fileName)
                {
-                       ctx.Report.RuntimeMissingSupport (Location.Null, "-target:module");
+                       compiler.Report.Error (1509,
+                               "Referenced assembly file `{0}' is a module. Consider using `-addmodule' option to add the module",
+                               fileName);
+               }
+
+               protected void Error_ModuleIsAssembly (string fileName)
+               {
+                       compiler.Report.Error (1542,
+                               "Added module file `{0}' is an assembly. Consider using `-r' option to reference the file",
+                               fileName);
+               }
+
+               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 (module.Compiler.Settings.StdLib) {
+                               corlib_assembly = LoadAssemblyDefault ("mscorlib.dll");
+                       } else {
+                               corlib_assembly = default (T);
+                       }
+
+                       T a;
+                       foreach (string r in module.Compiler.Settings.AssemblyReferences) {
+                               a = LoadAssemblyFile (r);
+                               if (a == null || EqualityComparer<T>.Default.Equals (a, corlib_assembly))
+                                       continue;
+
+                               var key = Tuple.Create (module.GlobalRootNamespace, a);
+                               if (loaded.Contains (key))
+                                       continue;
+
+                               // A corlib assembly is the first assembly which contains System.Object
+                               if (corlib_assembly == null && HasObjectType (a)) {
+                                       corlib_assembly = a;
+                                       continue;
+                               }
+
+                               loaded.Add (key);
+                       }
+
+                       foreach (var entry in module.Compiler.Settings.AssemblyReferencesAliases) {
+                               a = LoadAssemblyFile (entry.Item2);
+                               if (a == null)
+                                       continue;
+
+                               var key = Tuple.Create (module.CreateRootNamespace (entry.Item1), a);
+                               if (loaded.Contains (key))
+                                       continue;
+
+                               loaded.Add (key);
+                       }
+
+                       if (compiler.Settings.LoadDefaultReferences) {
+                               foreach (string r in GetDefaultReferences ()) {
+                                       a = LoadAssemblyDefault (r);
+                                       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);
                }
        }
 }