fix: fix web build

after an upstream patch the local patch files needed to be adjusted

Author: Totto16

platforms/build-web.sh

@@ -25,6 +25,7 @@ if ! [ -e "$EMSCRIPTEN_PATCH_FILE" ]; then
     ##TODO: upstream those patches
     # see: https://github.com/emscripten-core/emscripten/pull/18379/commits
     # and: https://github.com/emscripten-core/emscripten/pull/18379
+    # and: https://github.com/emscripten-core/emscripten/pull/22946
 
     git apply --unsafe-paths -p1 --directory="$EMSCRIPTEN_UPSTREAM_ROOT" "$PATCH_DIR/sdl2_image_port.diff"
     git apply --unsafe-paths -p1 --directory="$EMSCRIPTEN_UPSTREAM_ROOT" "$PATCH_DIR/sdl2_mixer_port.diff"

platforms/emscripten/sdl2_image_port.diff

@@ -1,8 +1,8 @@
 diff --git a/tools/ports/sdl2_image.py b/tools/ports/sdl2_image.py
-index c72ef576..0c12feba 100644
+index 70fa1499..36be807b 100644
 --- a/tools/ports/sdl2_image.py
 +++ b/tools/ports/sdl2_image.py
-@@ -16,15 +16,17 @@ variants = {
+@@ -18,7 +18,8 @@ variants = {
  }
 
  OPTIONS = {
@@ -12,46 +12,44 @@ index c72ef576..0c12feba 100644
  }
 
  SUPPORTED_FORMATS = {'avif', 'bmp', 'gif', 'jpg', 'jxl', 'lbm', 'pcx', 'png',
-                      'pnm', 'qoi', 'svg', 'tga', 'tif', 'webp', 'xcf', 'xpm', 'xv'}
+@@ -26,7 +27,8 @@ SUPPORTED_FORMATS = {'avif', 'bmp', 'gif', 'jpg', 'jxl', 'lbm', 'pcx', 'png',
 
  # user options (from --use-port)
--opts: Dict[str, Set] = {
+ opts: Dict[str, Set] = {
 -  'formats': set()
-+opts = {
 +  'formats': set(),
 +  'mt': 0
  }
 
 
-@@ -42,7 +44,7 @@ def get_lib_name(settings):
+@@ -44,7 +46,7 @@ def get_lib_name(settings):
    libname = 'libSDL2_image'
    if formats != '':
-     libname += '_' + formats
--  return libname + '.a'
-+  return libname + ('-mt' if opts['mt'] else '') + '.a'
- 
- 
- def get(ports, settings, shared):
-@@ -70,6 +72,8 @@ def get(ports, settings, shared):
+     libname += '-' + formats
+-  if settings.PTHREADS:
++  if settings.PTHREADS or opts['mt']:
+     libname += '-mt'
+   return libname + '.a'
 
+@@ -75,7 +77,7 @@ def get(ports, settings, shared):
      if 'jpg' in formats:
-       defs += ['-sUSE_LIBJPEG']
-+    if opts['mt']:
-+      defs += ['-pthread']
+       flags += ['-sUSE_LIBJPEG']
 
-     ports.build_port(src_dir, final, 'sdl2_image', flags=defs, srcs=srcs)
+-    if settings.PTHREADS:
++    if settings.PTHREADS or opts['mt']:
+       flags += ['-pthread']
 
-@@ -99,7 +103,12 @@ def handle_options(options, error_handler):
+     ports.build_port(src_dir, final, 'sdl2_image', flags=flags, srcs=srcs)
+@@ -106,6 +108,12 @@ def handle_options(options, error_handler):
        error_handler(f'{format} is not a supported format')
      else:
        opts['formats'].add(format)
--
 +      
 +  mt = options['mt']
 +  if mt not in ["1","0"]:
 +    error_handler(f'{mt} has to be either 0 or 1')
 +  else:
 +    opts['mt'] = int(mt)
 
+ 
  def show():
-   return 'sdl2_image (-sUSE_SDL_IMAGE=2 or --use-port=sdl2_image; zlib license)'