LibIPC: Start fleshing out a separate IPC library

This will be a place to put object serialization/deserialization logic,
message parsing, endpoint management, etc.

Kernel/makeall.sh

@@ -19,6 +19,7 @@ build_targets="$build_targets ../DevTools/IPCCompiler"
 build_targets="$build_targets ../Libraries/LibC"
 build_targets="$build_targets ../Libraries/LibM"
 build_targets="$build_targets ../Libraries/LibCore"
+build_targets="$build_targets ../Libraries/LibIPC"
 build_targets="$build_targets ../Libraries/LibDraw"
 build_targets="$build_targets ../Libraries/LibAudio"
 build_targets="$build_targets ../Servers/SystemServer"

Libraries/LibIPC/IEndpoint.cpp

@@ -0,0 +1,9 @@
+#include <LibIPC/IEndpoint.h>
+
+IEndpoint::IEndpoint()
+{
+}
+
+IEndpoint::~IEndpoint()
+{
+}

Libraries/LibIPC/IEndpoint.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <AK/AKString.h>
+
+class IEndpoint {
+public:
+    virtual ~IEndpoint();
+
+    const String& name() const { return m_name; }
+
+protected:
+    IEndpoint();
+
+private:
+    String m_name;
+};

Libraries/LibIPC/IMessage.cpp

@@ -0,0 +1,9 @@
+#include <LibIPC/IMessage.h>
+
+IMessage::IMessage()
+{
+}
+
+IMessage::~IMessage()
+{
+}

Libraries/LibIPC/IMessage.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <AK/AKString.h>
+#include <AK/ByteBuffer.h>
+
+class IMessage {
+public:
+    virtual ~IMessage();
+
+    const String& name() const { return m_name; }
+    virtual ByteBuffer encode() = 0;
+
+protected:
+    IMessage();
+
+private:
+    String m_name;
+};

Libraries/LibIPC/Makefile

@@ -0,0 +1,21 @@
+include ../../Makefile.common
+
+OBJS = \
+    IEndpoint.o \
+    IMessage.o
+
+LIBRARY = libipc.a
+DEFINES += -DUSERLAND
+
+all: $(LIBRARY)
+
+$(LIBRARY): $(OBJS)
+	@echo "LIB $@"; $(AR) rcs $@ $(OBJS) $(LIBS)
+
+.cpp.o:
+	@echo "CXX $<"; $(CXX) $(CXXFLAGS) -o $@ -c $<
+
+-include $(OBJS:%.o=%.d)
+
+clean:
+	@echo "CLEAN"; rm -f $(LIBRARY) $(OBJS) *.d

Libraries/LibIPC/install.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+set -e
+SERENITY_ROOT=../../
+
+mkdir -p $SERENITY_ROOT/Root/usr/include/LibIPC/
+cp *.h $SERENITY_ROOT/Root/usr/include/LibIPC/