add tiny cross-platform TCP socket library from https://github.com/DFHack/clsocket

(todo: hook-up to Bullet cmake/premake build systems, and implement TCP alternative for UDP server)

examples/ThirdPartyLibs/clsocket/CMakeLists.txt

@@ -0,0 +1,102 @@
+cmake_minimum_required(VERSION 2.8 FATAL_ERROR)
+project(clsocket)
+
+# set up versioning.
+set(BUILD_MAJOR "1")
+set(BUILD_MINOR "4")
+set(BUILD_VERSION "3")
+
+include_directories(src)
+
+SET(CLSOCKET_HEADERS
+src/ActiveSocket.h
+src/Host.h
+src/PassiveSocket.h
+src/SimpleSocket.h
+src/StatTimer.h
+)
+
+SET(CLSOCKET_SOURCES
+src/SimpleSocket.cpp
+src/ActiveSocket.cpp
+src/PassiveSocket.cpp
+)
+
+# mark headers as headers...
+SET_SOURCE_FILES_PROPERTIES( ${CLSOCKET_HEADERS} PROPERTIES HEADER_FILE_ONLY TRUE )
+# append to sources so that dependency checks work on headers
+LIST(APPEND CLSOCKET_SOURCES ${CLSOCKET_HEADERS})
+
+# OS and compiler checks. 
+if(UNIX)
+    # linux / normal unix
+    add_definitions(-D_LINUX)
+    if(CYGWIN)
+        # Special Cygwin stuff here
+    elseif(APPLE)
+        # Special Apple stuff here
+        remove_definitions(-D_LINUX)
+        add_definitions(-D_DARWIN)
+    endif()
+elseif(WIN32)
+    add_definitions(-DWIN32)
+    SET(PROJECT_LIBS Ws2_32.lib)
+    if(MINGW)
+        # Special MINGW stuff here
+    elseif(MSVC)
+        # Special MSVC stuff here
+    else()
+        # No idea what it is, but there's a good chance it's too weird.
+        MESSAGE( FATAL_ERROR "Using unknown WIN32 compiler... NOT. Please add to build system." )
+    endif()
+endif()
+
+OPTION(CLSOCKET_SHARED "Build clsocket lib as shared." ON)
+OPTION(CLSOCKET_DEP_ONLY "Build for use inside other CMake projects as dependency." OFF)
+
+# make the lib
+if(CLSOCKET_SHARED)
+    if(CLSOCKET_DEP_ONLY)
+        ADD_LIBRARY(clsocket SHARED EXCLUDE_FROM_ALL ${CLSOCKET_SOURCES})
+    else()
+        ADD_LIBRARY(clsocket SHARED ${CLSOCKET_SOURCES})
+    endif()
+else()
+    if(CLSOCKET_DEP_ONLY)
+        ADD_LIBRARY(clsocket STATIC EXCLUDE_FROM_ALL ${CLSOCKET_SOURCES})
+    else()
+        ADD_LIBRARY(clsocket STATIC ${CLSOCKET_SOURCES})
+    endif()
+endif()
+TARGET_LINK_LIBRARIES(clsocket ${PROJECT_LIBS})
+
+# install into configured prefix
+if(NOT CLSOCKET_DEP_ONLY)
+    install(TARGETS clsocket ARCHIVE DESTINATION lib LIBRARY DESTINATION lib)
+    install(FILES ${CLSOCKET_HEADERS} DESTINATION include)
+else()
+
+endif()
+
+OPTION(CLSOCKET_EXAMPLES "Build the examples" ON)
+
+ADD_EXECUTABLE(echoserver-example examples/EchoServer.cpp)
+TARGET_LINK_LIBRARIES(echoserver-example clsocket)
+
+ADD_EXECUTABLE(querydaytime-example examples/QueryDayTime.cpp)
+TARGET_LINK_LIBRARIES(querydaytime-example clsocket)
+
+
+if(UNIX)
+
+    if(CLSOCKET_EXAMPLES)
+        ADD_EXECUTABLE(clsocket-example examples/RecvAsync.cpp)
+        TARGET_LINK_LIBRARIES(clsocket-example clsocket pthread)
+        if(NOT CLSOCKET_DEP_ONLY)
+            install(TARGETS clsocket-example DESTINATION bin)
+        endif()
+
+
+    endif()
+endif()
+