Allow building on Linux using CMake (Experimental!)

CMakeLists.txt

@@ -0,0 +1,154 @@
+cmake_minimum_required(VERSION 3.9)
+
+project(principia)
+
+message(STATUS "*** Building Principia! ***")
+
+if (NOT CMAKE_BUILD_TYPE)
+    message(STATUS "No build type selected, default to Release")
+    set(CMAKE_BUILD_TYPE "Release")
+endif()
+
+find_package(CURL REQUIRED)
+find_package(Freetype REQUIRED)
+find_package(JPEG REQUIRED)
+find_package(PNG REQUIRED)
+find_package(SDL2 REQUIRED)
+find_package(SDL2_image REQUIRED)
+find_package(SDL2_mixer REQUIRED)
+find_package(SDL2_ttf REQUIRED)
+find_package(ZLIB REQUIRED)
+
+set(OpenGL_GL_PREFERENCE GLVND)
+find_package(OpenGL REQUIRED)
+
+option(SCREENSHOT_BUILD "Build screenshotter build (Linux only)" FALSE)
+
+if(WIN32)
+	set(TMS_BACKEND "windows")
+else()
+	if(SCREENSHOT_BUILD)
+		set(TMS_BACKEND "screenshot-linux")
+	else()
+		set(TMS_BACKEND "linux")
+	endif()
+endif()
+
+include_directories(
+	src/
+	src/lua/
+	src/SDL_image/
+	src/src/
+	${CURL_INCLUDE_DIR}
+	${FREETYPE_INCLUDE_DIRS}
+	${JPEG_INCLUDE_DIRS}
+	${OPENGL_INCLUDE_DIRS}
+	${PNG_INCLUDE_DIRS}
+	${SDL2_INCLUDE_DIRS}
+	${SDL2_image_INCLUDE_DIRS}
+	${SDL2_mixer_INCLUDE_DIRS}
+	${SDL2_ttf_INCLUDE_DIRS}
+	${ZLIB_INCLUDE_DIRS})
+
+file(GLOB SRCS
+	src/tms/core/*.c
+	src/tms/math/*.c
+	src/tms/util/*.c
+	src/tms/bindings/cpp/cpp.cc
+	src/tms/modules/3ds/3ds.c
+
+	src/lua/*.c
+
+	src/SDL_image/SDL2_rotozoom.c
+
+	src/src/*.cc
+	src/src/*.c
+
+	src/src/Box2D/Collision/*.cc
+	src/src/Box2D/Collision/Shapes/*.cc
+	src/src/Box2D/Common/*.cc
+	src/src/Box2D/Dynamics/*.cc
+	src/src/Box2D/Dynamics/Contacts/*.cc
+	src/src/Box2D/Dynamics/Joints/*.cc
+	src/src/Box2D/Particle/*.cc
+)
+
+if(NOT SCREENSHOT_BUILD)
+	find_package(PkgConfig REQUIRED)
+	pkg_check_modules(GTK3 REQUIRED gtk+-3.0)
+	find_package(GLEW REQUIRED)
+
+	# Luasocket
+	SET(LUASOCKET_FLAGS "-DLUASOCKET_INET_PTON")
+
+	include_directories(
+		src/luasocket/
+		${GLEW_INCLUDE_DIRS}
+		${GTK3_INCLUDE_DIRS})
+
+	set(SRCS ${SRCS}
+		src/luasocket/auxiliar.c
+		src/luasocket/buffer.c
+		src/luasocket/except.c
+		src/luasocket/inet.c
+		src/luasocket/io.c
+		src/luasocket/luasocket.c
+		src/luasocket/mime.c
+		src/luasocket/options.c
+		src/luasocket/select.c
+		src/luasocket/tcp.c
+		src/luasocket/timeout.c
+		src/luasocket/udp.c
+		src/luasocket/usocket.c
+		src/luasocket/unix.c)
+endif()
+
+include_directories(src/tms/backends/${TMS_BACKEND}/)
+
+set(SRCS ${SRCS}
+	src/tms/backends/${TMS_BACKEND}/main.cc)
+
+add_executable(${PROJECT_NAME} ${SRCS})
+target_link_libraries(
+	${PROJECT_NAME}
+		${CURL_LIBRARIES}
+		${FREETYPE_LIBRARIES}
+		${JPEG_LIBRARIES}
+		${OPENGL_LIBRARIES}
+		${PNG_LIBRARIES}
+		${SDL2_LIBRARIES}
+		SDL2_image::SDL2_image
+		SDL2_mixer::SDL2_mixer
+		SDL2_ttf::SDL2_ttf
+		${ZLIB_LIBRARIES})
+
+if(NOT SCREENSHOT_BUILD)
+	target_link_libraries(
+		${PROJECT_NAME}
+			${GLEW_LIBRARIES}
+			${GTK3_LIBRARIES})
+endif()
+
+set(COMMON_FLAGS "${LUASOCKET_FLAGS} -DGL_GLEXT_PROTOTYPES -DTMS_BACKEND_PC -DTMS_FAST_MATH -DLUA_COMPAT_MODULE -D__STDC_FORMAT_MACROS=1")
+
+if(WIN32)
+	set(COMMON_FLAGS "${COMMON_FLAGS} -DTMS_BACKEND_WINDOWS")
+else()
+	if(SCREENSHOT_BUILD)
+		set(COMMON_FLAGS "${COMMON_FLAGS} -DNO_UI -DTMS_BACKEND_LINUX_SS")
+	else()
+		set(COMMON_FLAGS "${COMMON_FLAGS} -DTMS_BACKEND_LINUX")
+	endif()
+endif()
+
+set(COMMON_FLAGS_DEBUG "${COMMON_FLAGS} -O0 -ggdb -ffast-math -Werror=return-type -DDEBUG=1 -rdynamic")
+set(COMMON_FLAGS_RELEASE "${COMMON_FLAGS} -DNDEBUG=1 -s -fomit-frame-pointer -fvisibility=hidden -fdata-sections -ffunction-sections")
+
+set(CMAKE_C_FLAGS_RELEASE "${COMMON_FLAGS_RELEASE} -O1")
+set(CMAKE_C_FLAGS_DEBUG "${COMMON_FLAGS_DEBUG}")
+
+set(CMAKE_CXX_FLAGS_RELEASE "${COMMON_FLAGS_RELEASE} -O2 -fvisibility-inlines-hidden -fno-rtti")
+set(CMAKE_CXX_FLAGS_DEBUG "-g -O0")
+
+set(CMAKE_EXE_LINKER_FLAGS_RELEASE "-Wl,-O,-s,--gc-sections")
+set(CMAKE_EXE_LINKER_FLAGS_DEBUG "-rdynamic")