general: Added initial CMake support

- Currently only compiles under windows due to dependencies on Winsock and the Windows Multimedia API.

CMakeLists.txt

@@ -0,0 +1,68 @@
+cmake_minimum_required(VERSION 3.2)
+
+# TODO: SDK Versioning.
+project(ggpo VERSION 1.0.0)
+
+# What do we want to build?
+option(BUILD_GGPO "Enable the build of the GGPO SDK" ON)
+option(BUILD_VECTORWAR "Enable the build of the Vector War example app" ON)
+option(BUILD_SHARED_LIBS "Enable the build of shared libraries (.dll/.so) instead of static ones (.lib/.a)" ON)
+
+set(GGPO_SDK
+	src/include/ggponet.h
+	src/lib/ggpo/main.cpp
+	src/lib/ggpo/bitvector.h
+	src/lib/ggpo/bitvector.cpp
+	src/lib/ggpo/game_input.h
+	src/lib/ggpo/game_input.cpp
+	src/lib/ggpo/input_queue.h
+	src/lib/ggpo/input_queue.cpp
+	src/lib/ggpo/log.h
+	src/lib/ggpo/log.cpp
+	src/lib/ggpo/poll.h
+	src/lib/ggpo/poll.cpp
+	src/lib/ggpo/ring_buffer.h
+	src/lib/ggpo/static_buffer.h
+	src/lib/ggpo/sync.h
+	src/lib/ggpo/sync.cpp
+	src/lib/ggpo/timesync.h
+	src/lib/ggpo/timesync.cpp
+	src/lib/ggpo/types.h
+	src/lib/ggpo/zconf.h
+	src/lib/ggpo/zlib.h
+	src/lib/ggpo/backends/backend.h
+	src/lib/ggpo/backends/p2p.h
+	src/lib/ggpo/backends/p2p.cpp
+	src/lib/ggpo/backends/spectator.h
+	src/lib/ggpo/backends/spectator.cpp
+	src/lib/ggpo/backends/synctest.h
+	src/lib/ggpo/backends/synctest.cpp
+	src/lib/ggpo/network/udp.h
+	src/lib/ggpo/network/udp.cpp
+	src/lib/ggpo/network/udp_msg.h
+	src/lib/ggpo/network/udp_proto.h
+	src/lib/ggpo/network/udp_proto.cpp
+)
+
+if(BUILD_GGPO)
+	add_library(ggpo ${GGPO_SDK})
+	
+	target_include_directories(ggpo PUBLIC src/include)
+	target_include_directories(ggpo PUBLIC src/lib/ggpo)
+	
+	if(WIN32 AND BUILD_SHARED_LIBS)
+		# Link to Multimedia API and Winsocks during a static build.
+		target_link_libraries(ggpo LINK_PUBLIC winmm.lib ws2_32.lib)
+	endif()
+	
+	set_target_properties(ggpo PROPERTIES VERSION ${PROJECT_VERSION})
+endif()
+
+if(BUILD_VECTORWAR)
+	# Vector War is windows only.
+	if(WIN32)
+		add_subdirectory(src/apps/vectorwar)
+	else()
+		message(WARNING "The Vector War app only supports windows, skipping...")
+	endif()
+endif()

src/apps/vectorwar/CMakeLists.txt

@@ -0,0 +1,24 @@
+set(VECTORWAR_APP
+	main.cpp
+	gamestate.h
+	gamestate.cpp
+	gdi_renderer.h
+	gdi_renderer.cpp
+	ggpo_perfmon.h
+	ggpo_perfmon.cpp
+	nongamestate.h
+	renderer.h
+	Resource.h
+	targetver.h
+	vectorwar.h
+	vectorwar.cpp
+	VectorWar.rc
+)
+
+add_executable(vectorwar WIN32 ${VECTORWAR_APP})
+
+# Change the character set to unicode.
+add_definitions(-D_UNICODE -DUNICODE)
+
+# Link against GGPO, winmm (Windows Multimedia API), and ws2_32 (Winsock).
+target_link_libraries(vectorwar LINK_PUBLIC ggpo winmm.lib ws2_32.lib)