diff --git a/autogen.sh b/autogen.sh
index 34a4d2e334..ca7488bcdb 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -17,10 +17,10 @@ set -ex
 
 rm -rf autom4te.cache
 
-aclocal-1.9 --force -I m4
+aclocal-1.10 --force -I m4
 libtoolize -c -f
 autoheader -f -W all
-automake-1.9 --foreign -a -c -f -W all
+automake-1.10 --foreign -a -c -f -W all
 autoconf -f -W all,no-obsolete
 
 rm -rf autom4te.cache config.h.in~
diff --git a/src/google/protobuf/compiler/csharp/csharp_enum_field.cc b/src/google/protobuf/compiler/csharp/csharp_enum_field.cc
index 7895d94811..f5414961ac 100644
--- a/src/google/protobuf/compiler/csharp/csharp_enum_field.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_enum_field.cc
@@ -70,25 +70,25 @@ GenerateMembers(io::Printer* printer) const {
   printer->Print(variables_,
     "private boolean has$capitalized_name$;\r\n"
     "private $type$ $name$_ = $default$;\r\n"
-    "public boolean has$capitalized_name$() { return has$capitalized_name$; }\r\n"
-    "public $type$ get$capitalized_name$() { return $name$_; }\r\n");
+    "public boolean Has$capitalized_name$() { return has$capitalized_name$; }\r\n"
+    "public $type$ Get$capitalized_name$() { return $name$_; }\r\n");
 }
 
 void EnumFieldGenerator::
 GenerateBuilderMembers(io::Printer* printer) const {
   printer->Print(variables_,
-    "public boolean has$capitalized_name$() {\r\n"
-    "  return result.has$capitalized_name$();\r\n"
+    "public boolean Has$capitalized_name$() {\r\n"
+    "  return result.Has$capitalized_name$();\r\n"
     "}\r\n"
-    "public $type$ get$capitalized_name$() {\r\n"
-    "  return result.get$capitalized_name$();\r\n"
+    "public $type$ Get$capitalized_name$() {\r\n"
+    "  return result.Get$capitalized_name$();\r\n"
     "}\r\n"
-    "public Builder set$capitalized_name$($type$ value) {\r\n"
+    "public Builder Set$capitalized_name$($type$ value) {\r\n"
     "  result.has$capitalized_name$ = true;\r\n"
     "  result.$name$_ = value;\r\n"
     "  return this;\r\n"
     "}\r\n"
-    "public Builder clear$capitalized_name$() {\r\n"
+    "public Builder Clear$capitalized_name$() {\r\n"
     "  result.has$capitalized_name$ = false;\r\n"
     "  result.$name$_ = $default$;\r\n"
     "  return this;\r\n"
@@ -154,15 +154,18 @@ RepeatedEnumFieldGenerator::~RepeatedEnumFieldGenerator() {}
 void RepeatedEnumFieldGenerator::
 GenerateMembers(io::Printer* printer) const {
   printer->Print(variables_,
-    "private java.util.List<$type$> $name$_ =\r\n"
-    "  java.util.Collections.emptyList();\r\n"
-    "public java.util.List<$type$> get$capitalized_name$List() {\r\n"
-    "  return $name$_;\r\n"   // note:  unmodifiable list
+    "private System.Collections.Generic.List<$type$> $name$_ =\r\n"
+    "  new System.Collections.Generic.List<$type$> ();\r\n"
+    "public System.Collections.Generic.List<$type$> $capitalized_name$List() {\r\n"
+    "  return $name$_.AsReadOnly ();\r\n"   // note:  unmodifiable list
     "}\r\n"
-    "public int get$capitalized_name$Count() { return $name$_.size(); }\r\n"
-    "public $type$ get$capitalized_name$(int index) {\r\n"
-    "  return $name$_.get(index);\r\n"
-    "}\r\n");
+
+    // Redundant API calls?
+    //"public int $capitalized_name$Count() { get { return $name$_.Count; } }\r\n"
+    //"public $type$ get$capitalized_name$(int index) {\r\n"
+    //"  return $name$_.get(index);\r\n"
+    //"}\r\n"
+    );
 }
 
 void RepeatedEnumFieldGenerator::
diff --git a/src/google/protobuf/compiler/csharp/csharp_extension.cc b/src/google/protobuf/compiler/csharp/csharp_extension.cc
index fee5c31e57..9b76087302 100644
--- a/src/google/protobuf/compiler/csharp/csharp_extension.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_extension.cc
@@ -63,7 +63,7 @@ void ExtensionGenerator::Generate(io::Printer* printer) {
       "      pb::GeneratedMessage\r\n"
       "        .newRepeatedGeneratedExtension(\r\n"
       "          getDescriptor().getExtensions().get($index$),\r\n"
-      "          $type$.class);\r\n");
+      "          typeof ($type$));\r\n");
   } else {
     printer->Print(vars,
       "public static final\r\n"
@@ -72,7 +72,7 @@ void ExtensionGenerator::Generate(io::Printer* printer) {
       "    $type$> $name$ =\r\n"
       "      pb::GeneratedMessage.newGeneratedExtension(\r\n"
       "        getDescriptor().getExtensions().get($index$),\r\n"
-      "        $type$.class);\r\n");
+      "        typeof ($type$));\r\n");
   }
 }
 
diff --git a/src/google/protobuf/compiler/csharp/csharp_message.cc b/src/google/protobuf/compiler/csharp/csharp_message.cc
index 520cb982ea..5630f783c6 100644
--- a/src/google/protobuf/compiler/csharp/csharp_message.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_message.cc
@@ -165,12 +165,12 @@ void MessageGenerator::GenerateStaticVariables(io::Printer* printer) {
   // The descriptor for this type.
   if (descriptor_->containing_type() == NULL) {
     printer->Print(vars,
-      "$private$static readonly pb::Descriptors.Descriptor {\r\n"
+      "$private$static readonly pb::Descriptors.Descriptor \r\n"
       "  internal_$identifier$_descriptor =\r\n"
       "    getDescriptor().getMessageTypes().get($index$);\r\n");
   } else {
     printer->Print(vars,
-      "$private$static readonly pb::Descriptors.Descriptor {\r\n"
+      "$private$static readonly pb::Descriptors.Descriptor \r\n"
       "  internal_$identifier$_descriptor =\r\n"
       "    internal_$parent$_descriptor.getNestedTypes().get($index$);\r\n");
   }
@@ -190,8 +190,8 @@ void MessageGenerator::GenerateStaticVariables(io::Printer* printer) {
         UnderscoresToCapitalizedCamelCase(descriptor_->field(i)));
   }
   printer->Print("},\r\n"
-    "        $classname$.class,\r\n"
-    "        $classname$.Builder.class);\r\n",
+    "        typeof ($classname$),\r\n"
+    "        typeof ($classname$.Builder));\r\n",
     "classname", ClassName(descriptor_));
 
   // Generate static members for all nested types.
diff --git a/src/google/protobuf/compiler/csharp/csharp_message_field.cc b/src/google/protobuf/compiler/csharp/csharp_message_field.cc
index 56a8b0a791..95b3e96978 100644
--- a/src/google/protobuf/compiler/csharp/csharp_message_field.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_message_field.cc
@@ -175,14 +175,15 @@ RepeatedMessageFieldGenerator::~RepeatedMessageFieldGenerator() {}
 void RepeatedMessageFieldGenerator::
 GenerateMembers(io::Printer* printer) const {
   printer->Print(variables_,
-    "private java.util.List<$type$> $name$_ =\r\n"
-    "  java.util.Collections.emptyList();\r\n"
-    "public java.util.List<$type$> get$capitalized_name$List() {\r\n"
-    "  return $name$_;\r\n"   // note:  unmodifiable list
+    "internal System.Collections.Generic.IList<$type$> Empty$capitalized_name$ =\r\n"
+    "  new System.Collections.ReadOnlyCollection<$type$> ();\r\n"
+    "internal System.Collections.Generic.IList<$type$> $name$_ = Empty$capitalized_name$;\r\n"
+    "public System.Collections.Generic.IList<$type$> $capitalized_name$List {\r\n"
+    "  get { return $name$_; } \r\n"   // note:  unmodifiable list
     "}\r\n"
-    "public int get$capitalized_name$Count() { return $name$_.size(); }\r\n"
-    "public $type$ get$capitalized_name$(int index) {\r\n"
-    "  return $name$_.get(index);\r\n"
+    "public int $capitalized_name$Count { get { return $name$_.Count; }  }\r\n"
+    "public $type$ $capitalized_name$(int index) {\r\n"
+    "  return $name$_ [index];\r\n"
     "}\r\n");
 }
 
@@ -193,48 +194,47 @@ GenerateBuilderMembers(io::Printer* printer) const {
     //   could hold on to the returned list and modify it after the message
     //   has been built, thus mutating the message which is supposed to be
     //   immutable.
-    "public java.util.List<$type$> get$capitalized_name$List() {\r\n"
-    "  return java.util.Collections.unmodifiableList(result.$name$_);\r\n"
+    "public System.Collections.Generic.IList<$type$> Get$capitalized_name$List() {\r\n"
+    "  if (result.$name$_ == $type$.Empty$capitalized_name$)\r\n"
+    "    return result.$name$;\r\n"
+    "  return result.$name$_.AsReadOnly ();\r\n"
     "}\r\n"
-    "public int get$capitalized_name$Count() {\r\n"
-    "  return result.get$capitalized_name$Count();\r\n"
+    "public int Get$capitalized_name$Count() {\r\n"
+    "  return result.Get$capitalized_name$Count();\r\n"
     "}\r\n"
-    "public $type$ get$capitalized_name$(int index) {\r\n"
-    "  return result.get$capitalized_name$(index);\r\n"
+    "public $type$ Get$capitalized_name$(int index) {\r\n"
+    "  return result.Get$capitalized_name$(index);\r\n"
     "}\r\n"
-    "public Builder set$capitalized_name$(int index, $type$ value) {\r\n"
-    "  result.$name$_.set(index, value);\r\n"
+    "public Builder Set$capitalized_name$(int index, $type$ value) {\r\n"
+    "  result.$name$_ [index] = value;\r\n"
     "  return this;\r\n"
     "}\r\n"
-    "public Builder set$capitalized_name$(int index, "
+    "public Builder Set$capitalized_name$(int index, "
       "$type$.Builder builderForValue) {\r\n"
-    "  result.$name$_.set(index, builderForValue.build());\r\n"
+    "  result.$name$_ [index] = builderForValue.build();\r\n"
     "  return this;\r\n"
     "}\r\n"
-    "public Builder add$capitalized_name$($type$ value) {\r\n"
-    "  if (result.$name$_.isEmpty()) {\r\n"
-    "    result.$name$_ = new java.util.ArrayList<$type$>();\r\n"
-    "  }\r\n"
-    "  result.$name$_.add(value);\r\n"
+    "public Builder Add$capitalized_name$($type$ value) {\r\n"
+    "  if (result.$name$ == $type$.Empty$capitalized_name$)\r\n"
+    "    result.$name$ = new System.Collections.Generic.List<$type$>();\r\n"
+    "  result.$name$_.Add(value);\r\n"
     "  return this;\r\n"
     "}\r\n"
-    "public Builder add$capitalized_name$($type$.Builder builderForValue) {\r\n"
-    "  if (result.$name$_.isEmpty()) {\r\n"
-    "    result.$name$_ = new java.util.ArrayList<$type$>();\r\n"
-    "  }\r\n"
-    "  result.$name$_.add(builderForValue.build());\r\n"
+    "public Builder Add$capitalized_name$($type$.Builder builderForValue) {\r\n"
+    "  if (result.$name$ == $type$.Empty$capitalized_name$)\r\n"
+    "    result.$name$ = new System.Collections.Generic.List<$type$>();\r\n"
+    "  result.$name$_.Add(builderForValue.build());\r\n"
     "  return this;\r\n"
     "}\r\n"
-    "public Builder addAll$capitalized_name$<T>(\r\n"
+    "public Builder AddAll$capitalized_name$<T>(\r\n"
     "    global::System.Collections.Generic.IEnumerable<T> values) where T : $type$ {\r\n"
-    "  if (result.$name$_.isEmpty()) {\r\n"
-    "    result.$name$_ = new java.util.ArrayList<$type$>();\r\n"
-    "  }\r\n"
-    "  super.addAll(values, result.$name$_);\r\n"
+    "  if (result.$name$ == $type$.Empty$capitalized_name$)\r\n"
+    "    result.$name$ = new System.Collections.Generic.List<$type$>();\r\n"
+    "  result.$name$_.AddEnumerable (values);\r\n"
     "  return this;\r\n"
     "}\r\n"
-    "public Builder clear$capitalized_name$() {\r\n"
-    "  result.$name$_ = java.util.Collections.emptyList();\r\n"
+    "public Builder Clear$capitalized_name$() {\r\n"
+    "  result.$name$_ = $type$.Empty$capitalized_name$;\r\n"
     "  return this;\r\n"
     "}\r\n");
 }
@@ -242,20 +242,20 @@ GenerateBuilderMembers(io::Printer* printer) const {
 void RepeatedMessageFieldGenerator::
 GenerateMergingCode(io::Printer* printer) const {
   printer->Print(variables_,
-    "if (!other.$name$_.isEmpty()) {\r\n"
-    "  if (result.$name$_.isEmpty()) {\r\n"
-    "    result.$name$_ = new java.util.ArrayList<$type$>();\r\n"
+    "if (!other.$name$_ != $type$.Empty$capitalized_name$) {\r\n"
+    "  if (result.$name$_ == $type$.Empty$capitalized_name$) {\r\n"
+    "    result.$name$_ = new System.Collections.Generic.List<$type$>();\r\n"
     "  }\r\n"
-    "  result.$name$_.addAll(other.$name$_);\r\n"
+    "  result.$name$_.AddCollection(other.$name$_);\r\n"
     "}\r\n");
 }
 
 void RepeatedMessageFieldGenerator::
 GenerateBuildingCode(io::Printer* printer) const {
   printer->Print(variables_,
-    "if (result.$name$_ != java.util.Collections.EMPTY_LIST) {\r\n"
+    "if (result.$name$_ != $type$.Empty$capitalized_name$) {\r\n"
     "  result.$name$_ =\r\n"
-    "    java.util.Collections.unmodifiableList(result.$name$_);\r\n"
+    "    result.$name$_.AsReadOnly ();\r\n"
     "}\r\n");
 }
 
@@ -273,13 +273,13 @@ GenerateParsingCode(io::Printer* printer) const {
   }
 
   printer->Print(variables_,
-    "add$capitalized_name$(subBuilder.buildPartial());\r\n");
+    "Add$capitalized_name$(subBuilder.buildPartial());\r\n");
 }
 
 void RepeatedMessageFieldGenerator::
 GenerateSerializationCode(io::Printer* printer) const {
   printer->Print(variables_,
-    "for ($type$ element : get$capitalized_name$List()) {\r\n"
+    "foreach ($type$ element in Get$capitalized_name$List()) {\r\n"
     "  output.write$group_or_message$($number$, element);\r\n"
     "}\r\n");
 }
@@ -287,7 +287,7 @@ GenerateSerializationCode(io::Printer* printer) const {
 void RepeatedMessageFieldGenerator::
 GenerateSerializedSizeCode(io::Printer* printer) const {
   printer->Print(variables_,
-    "for ($type$ element : get$capitalized_name$List()) {\r\n"
+    "foreach ($type$ element in Get$capitalized_name$List()) {\r\n"
     "  size += pb::CodedOutputStream\r\n"
     "    .compute$group_or_message$Size($number$, element);\r\n"
     "}\r\n");
diff --git a/src/google/protobuf/compiler/csharp/csharp_primitive_field.cc b/src/google/protobuf/compiler/csharp/csharp_primitive_field.cc
index c504fd5b39..d86219e956 100644
--- a/src/google/protobuf/compiler/csharp/csharp_primitive_field.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_primitive_field.cc
@@ -102,12 +102,11 @@ string DefaultValue(const FieldDescriptor* field) {
     case FieldDescriptor::CPPTYPE_INT32:
       return SimpleItoa(field->default_value_int32());
     case FieldDescriptor::CPPTYPE_UINT32:
-      // Need to print as a signed int since Java has no unsigned.
-      return SimpleItoa(static_cast<int32>(field->default_value_uint32()));
+      return SimpleItoa(field->default_value_uint32());
     case FieldDescriptor::CPPTYPE_INT64:
       return SimpleItoa(field->default_value_int64()) + "L";
     case FieldDescriptor::CPPTYPE_UINT64:
-      return SimpleItoa(static_cast<int64>(field->default_value_uint64())) +
+      return SimpleItoa(field->default_value_uint64()) +
              "L";
     case FieldDescriptor::CPPTYPE_DOUBLE:
       return SimpleDtoa(field->default_value_double()) + "D";
diff --git a/src/google/protobuf/compiler/csharp/csharp_service.cc b/src/google/protobuf/compiler/csharp/csharp_service.cc
index 52d92b2b86..8b235135e3 100644
--- a/src/google/protobuf/compiler/csharp/csharp_service.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_service.cc
@@ -211,7 +211,7 @@ void ServiceGenerator::GenerateStub(io::Printer* printer) {
       "    $output$.getDefaultInstance(),\r\n"
       "    pb::RpcUtil.generalizeCallback(\r\n"
       "      done,\r\n"
-      "      $output$.class,\r\n"
+      "      typeof ($output$),\r\n"
       "      $output$.getDefaultInstance()));\r\n"
       "}\r\n");
   }