CMake Support

.gitignore

@@ -1,15 +1,35 @@
-# ignore visual studio directies and local files
+# Ignore visual studio directies and local files
 .vscode
-build/VS2019/x64/**
-build/VS2019/.vs/**
-build/VS2019/Release/**
-build/VS2019/Debug/**
-build/VS2019/GGPO/Release/**
-build/VS2019/GGPO/Debug/**
-build/VS2019/GGPO/x64/**
-build/VS2019/GGPO/GGPO.vcxproj.user
-build/VS2019/Vectorwar/Release/**
-build/VS2019/Vectorwar/Debug/**
-build/VS2019/Vectorwar/x64/**
-build/VS2019/VectorWar/VectorWar.vcxproj.user
 
+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app

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()

README.md

@@ -5,7 +5,16 @@ Traditional techniques account for network transmission time by adding delay to
 
 For more information about the history of GGPO, check out http://ggpo.net/
 
-This repository contains the code, documentation, and sample application for the Windows version of the SDK (requires Visual Studio 2019).
+This repository contains the code, documentation, and sample applications for the SDK.
+
+## Building
+Building GGPO is currently only available on Windows, however efforts are being made to port it to other platforms. To get started, clone the repository using either git or svn:
+```git clone https://github.com/pond3r/ggpo.git```
+**OR**
+```svn checkout https://github.com/pond3r/ggpo```
+
+### Windows 
+On windows, it's recommended to use Visual Studio 2019 and cmake-gui (which can be downloaded [here](https://cmake.org/download/)). Once everything has been setup, open cmake-gui and select the root of the repository under ```Where is the source code:``` followed by the build folder under ```Where to build the binaries:```. Next, hit ```Configure``` and change any options that appear in the main window before hitting ```Generate``` which will generate the VS2019 solution. Once the solution has been generated, hit ```Open Project``` and build with the appropriate settings (Debug/Release). The built binaries can then be found where they were configured to be built.
 
 ## Licensing
 GGPO is available under The MIT License. This means GGPO is free for commercial and non-commercial use. Attribution is not required, but appreciated. 

build/.gitignore

@@ -0,0 +1,3 @@
+# Track the build directory but not its contents.
+*
+!.gitignore