add libretro port

TerryCavanagh · Oct 12, 2024 · e2eccdb · e2eccdb
1 parent b19611e
commit e2eccdb
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diff --git a/.gitmodules b/.gitmodules
@@ -16,3 +16,6 @@
 [submodule "third_party/SheenBidi"]
 	path = third_party/SheenBidi
 	url = https://github.com/Tehreer/SheenBidi
+[submodule "third_party/SDL"]
+	path = third_party/SDL
+	url = https://github.com/libsdl-org/SDL.git
diff --git a/desktop_version/CMakeLists.txt b/desktop_version/CMakeLists.txt
@@ -23,6 +23,8 @@ endif()
 
 option(REMOVE_ABSOLUTE_PATHS "If supported by the compiler, replace all absolute paths to source directories compiled into the binary (if any) with relative paths" ON)
 
+option(BUILD_LIBRETRO "Build a libretro core" OFF)
+option(LIBRETRO_STATIC "Statically link the libretro core" OFF)
 
 # Architecture Flags
 if(APPLE)
@@ -136,6 +138,30 @@ if(WIN32)
     add_executable(VVVVVV WIN32 ${VVV_SRC} icon.rc)
 elseif(ANDROID)
     add_library(VVVVVV SHARED ${VVV_SRC})
+elseif(BUILD_LIBRETRO)
+    set(BUNDLE_DEPENDENCIES ON)
+    set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+    add_subdirectory(libretro)
+    set(SDL2_INCLUDE_DIRS ${CMAKE_SOURCE_DIR}/third_party/SDL/include)
+    set(SDL2_LIBRARIES sdl2)
+
+    list(APPEND VVV_SRC libretro/libretro.c libretro/SDL_libretro.c)
+    if (LIBRETRO_STATIC)
+        add_library(VVVVVV STATIC ${VVV_SRC})
+    else()
+        add_library(VVVVVV SHARED ${VVV_SRC})
+    endif()
+
+    # Follow naming conventions for libretro cores
+    set_target_properties(VVVVVV PROPERTIES
+        PREFIX ""
+        OUTPUT_NAME "vvvvvv_libretro"
+    )
+    target_link_options(VVVVVV PRIVATE
+        -Wl,--version-script=${CMAKE_SOURCE_DIR}/libretro/link.T
+        -Wl,--no-undefined
+        -lm -ldl -pthread
+    )
 else()
     add_executable(VVVVVV ${VVV_SRC})
 endif()

diff --git a/desktop_version/libretro/CMakeLists.txt b/desktop_version/libretro/CMakeLists.txt
@@ -0,0 +1,112 @@
+# configure SDL2 for libretro
+file(COPY SDL_config.h DESTINATION ${CMAKE_SOURCE_DIR}/../third_party/SDL/include)
+file(COPY SDL_dynapi.h DESTINATION ${CMAKE_SOURCE_DIR}/../third_party/SDL/src/dynapi)
+
+add_library(sdl2 STATIC
+  ../../third_party/SDL/src/SDL.c
+  ../../third_party/SDL/src/SDL_assert.c
+  ../../third_party/SDL/src/SDL_dataqueue.c
+  ../../third_party/SDL/src/SDL_error.c
+  ../../third_party/SDL/src/SDL_guid.c
+  ../../third_party/SDL/src/SDL_hints.c
+  ../../third_party/SDL/src/SDL_list.c
+  ../../third_party/SDL/src/SDL_log.c
+  ../../third_party/SDL/src/SDL_utils.c
+  ../../third_party/SDL/src/atomic/SDL_atomic.c
+  ../../third_party/SDL/src/atomic/SDL_spinlock.c
+  ../../third_party/SDL/src/audio/SDL_audio.c
+  ../../third_party/SDL/src/audio/SDL_audiocvt.c
+  ../../third_party/SDL/src/audio/SDL_audiodev.c
+  ../../third_party/SDL/src/audio/SDL_audiotypecvt.c
+  ../../third_party/SDL/src/audio/SDL_mixer.c
+  ../../third_party/SDL/src/audio/SDL_wave.c
+  ../../third_party/SDL/src/loadso/dlopen/SDL_sysloadso.c
+  ../../third_party/SDL/src/core/linux/SDL_threadprio.c
+  ../../third_party/SDL/src/filesystem/unix/SDL_sysfilesystem.c
+  ../../third_party/SDL/src/cpuinfo/SDL_cpuinfo.c
+  ../../third_party/SDL/src/dynapi/SDL_dynapi.c
+  ../../third_party/SDL/src/events/SDL_clipboardevents.c
+  ../../third_party/SDL/src/events/SDL_displayevents.c
+  ../../third_party/SDL/src/events/SDL_dropevents.c
+  ../../third_party/SDL/src/events/SDL_events.c
+  ../../third_party/SDL/src/events/SDL_gesture.c
+  ../../third_party/SDL/src/events/SDL_keyboard.c
+  ../../third_party/SDL/src/events/SDL_keysym_to_scancode.c
+  ../../third_party/SDL/src/events/SDL_mouse.c
+  ../../third_party/SDL/src/events/SDL_quit.c
+  ../../third_party/SDL/src/events/SDL_scancode_tables.c
+  ../../third_party/SDL/src/events/SDL_touch.c
+  ../../third_party/SDL/src/events/SDL_windowevents.c
+  ../../third_party/SDL/src/events/imKStoUCS.c
+  ../../third_party/SDL/src/file/SDL_rwops.c
+  ../../third_party/SDL/src/joystick/SDL_gamecontroller.c
+  ../../third_party/SDL/src/joystick/SDL_joystick.c
+  ../../third_party/SDL/src/joystick/SDL_steam_virtual_gamepad.c
+  ../../third_party/SDL/src/joystick/controller_type.c
+  ../../third_party/SDL/src/joystick/dummy/SDL_sysjoystick.c
+  ../../third_party/SDL/src/haptic/SDL_haptic.c
+  ../../third_party/SDL/src/haptic/dummy/SDL_syshaptic.c
+  ../../third_party/SDL/src/render/SDL_d3dmath.c
+  ../../third_party/SDL/src/render/SDL_render.c
+  ../../third_party/SDL/src/render/SDL_yuv_sw.c
+  ../../third_party/SDL/src/render/opengl/SDL_render_gl.c
+  ../../third_party/SDL/src/render/opengl/SDL_shaders_gl.c
+  ../../third_party/SDL/src/render/opengles/SDL_render_gles.c
+  ../../third_party/SDL/src/render/opengles2/SDL_render_gles2.c
+  ../../third_party/SDL/src/render/opengles2/SDL_shaders_gles2.c
+  ../../third_party/SDL/src/render/software/SDL_blendfillrect.c
+  ../../third_party/SDL/src/render/software/SDL_blendline.c
+  ../../third_party/SDL/src/render/software/SDL_blendpoint.c
+  ../../third_party/SDL/src/render/software/SDL_drawline.c
+  ../../third_party/SDL/src/render/software/SDL_drawpoint.c
+  ../../third_party/SDL/src/render/software/SDL_render_sw.c
+  ../../third_party/SDL/src/render/software/SDL_rotate.c
+  ../../third_party/SDL/src/render/software/SDL_triangle.c
+  ../../third_party/SDL/src/stdlib/SDL_crc16.c
+  ../../third_party/SDL/src/stdlib/SDL_crc32.c
+  ../../third_party/SDL/src/stdlib/SDL_getenv.c
+  ../../third_party/SDL/src/stdlib/SDL_iconv.c
+  ../../third_party/SDL/src/stdlib/SDL_malloc.c
+  ../../third_party/SDL/src/stdlib/SDL_mslibc.c
+  ../../third_party/SDL/src/stdlib/SDL_qsort.c
+  ../../third_party/SDL/src/stdlib/SDL_stdlib.c
+  ../../third_party/SDL/src/stdlib/SDL_string.c
+  ../../third_party/SDL/src/stdlib/SDL_strtokr.c
+  ../../third_party/SDL/src/thread/SDL_thread.c
+  ../../third_party/SDL/src/thread/pthread/SDL_syscond.c
+  ../../third_party/SDL/src/thread/pthread/SDL_sysmutex.c
+  ../../third_party/SDL/src/thread/pthread/SDL_syssem.c
+  ../../third_party/SDL/src/thread/pthread/SDL_systhread.c
+  ../../third_party/SDL/src/thread/pthread/SDL_systls.c
+  ../../third_party/SDL/src/timer/SDL_timer.c
+  ../../third_party/SDL/src/timer/unix/SDL_systimer.c
+  ../../third_party/SDL/src/video/SDL_RLEaccel.c
+  ../../third_party/SDL/src/video/SDL_blit.c
+  ../../third_party/SDL/src/video/SDL_blit_0.c
+  ../../third_party/SDL/src/video/SDL_blit_1.c
+  ../../third_party/SDL/src/video/SDL_blit_A.c
+  ../../third_party/SDL/src/video/SDL_blit_N.c
+  ../../third_party/SDL/src/video/SDL_blit_auto.c
+  ../../third_party/SDL/src/video/SDL_blit_copy.c
+  ../../third_party/SDL/src/video/SDL_blit_slow.c
+  ../../third_party/SDL/src/video/SDL_bmp.c
+  ../../third_party/SDL/src/video/SDL_clipboard.c
+  ../../third_party/SDL/src/video/SDL_egl.c
+  ../../third_party/SDL/src/video/SDL_fillrect.c
+  ../../third_party/SDL/src/video/SDL_pixels.c
+  ../../third_party/SDL/src/video/SDL_rect.c
+  ../../third_party/SDL/src/video/SDL_shape.c
+  ../../third_party/SDL/src/video/SDL_stretch.c
+  ../../third_party/SDL/src/video/SDL_surface.c
+  ../../third_party/SDL/src/video/SDL_video.c
+  ../../third_party/SDL/src/video/SDL_vulkan_utils.c
+  ../../third_party/SDL/src/video/SDL_yuv.c
+  ../../third_party/SDL/src/video/yuv2rgb/yuv_rgb_lsx.c
+  ../../third_party/SDL/src/video/yuv2rgb/yuv_rgb_sse.c
+  ../../third_party/SDL/src/video/yuv2rgb/yuv_rgb_std.c
+  ../../third_party/SDL/src/misc/SDL_url.c
+  ../../third_party/SDL/src/misc/unix/SDL_sysurl.c
+)
+target_include_directories(sdl2 PUBLIC
+  ../../third_party/SDL/include
+)