add sdl2 wrap fallback

meson.build

@@ -9,6 +9,11 @@ project('taisei', 'c',
         'libzip:enable_crypto=false',
         'libzip:enable_bzip2=false',
 
+        'sdl2:enable_haptic=false',
+        'sdl2:enable_power=false',
+        'sdl2:enable_render=false',
+        'sdl2:enable_sensor=false',
+
         # You may want to change these for a debug build dir
         'buildtype=release',
         'strip=true',
@@ -105,8 +110,8 @@ static = get_option('static') or (host_machine.system() == 'emscripten')
 
 dep_freetype    = dependency('freetype2',                           required : true,  static : static, fallback : ['freetype', 'freetype_dep'])
 dep_png         = dependency('libpng',         version : '>=1.5',   required : true,  static : static, fallback : ['libpng', 'png_dep'])
-dep_sdl2        = dependency('sdl2',           version : '>=2.0.5', required : true,  static : static)
-dep_sdl2_mixer  = dependency('SDL2_mixer',                          required : false, static : static)
+dep_sdl2        = dependency('sdl2',           version : '>=2.0.5', required : true,  static : static, fallback : ['sdl2', 'sdl2_dep'])
+dep_sdl2_mixer  = dependency('SDL2_mixer',                          required : false, static : static, fallback : ['sdl2_mixer', 'sdl2_mixer_dep'])
 dep_webp        = dependency('libwebp',        version : '>=0.5',   required : false, static : static, fallback : ['libwebp', 'webp_dep'])
 dep_webpdecoder = dependency('libwebpdecoder', version : '>=0.5',   required : false, static : static, fallback : ['libwebp', 'webpdecoder_dep'])
 dep_zlib        = dependency('zlib',                                required : true,  static : static, fallback : ['zlib', 'zlib_dep'])

subprojects/.gitignore

@@ -4,3 +4,5 @@ zlib
 libpng
 freetype
 libwebp
+sdl2
+sdl2_mixer

subprojects/sdl2.wrap

@@ -0,0 +1,5 @@
+[wrap-git]
+directory=sdl2
+url=https://github.com/taisei-project/SDL-mirror.git
+push-url=git@github.com:taisei-project/SDL-mirror.git
+revision=meson-2.0.9