wasm meson build test

dev.py

@@ -36,6 +36,15 @@
 PIP_MIN_VERSION = "23.1"
 
 
+if __import__("sysconfig").get_config_var("HOST_GNU_TYPE").find('wasm') >= 0:
+    if __import__("sysconfig").get_config_var("HOST_GNU_TYPE").find('wasi') >= 0:
+        WASM = 'wasi'
+    else:
+        WASM = 'emscripten'
+else:
+    WASM = ''
+
+
 class Colors(Enum):
     RESET = "\033[0m"
     RED = "\033[31m"
@@ -231,6 +240,18 @@ def cmd_build(self):
             f"-Cbuild-dir=.mesonpy-build{build_suffix}",
         ]
 
+        if WASM:
+            stripped = True
+            install_args.extend(
+                [
+                    f'--config-settings=setup-args=--cross-file={os.getcwd()}/meson-cross-{WASM}.ini',
+                    "-Csetup-args=-Dmidi=disabled",
+                    '-Csetup-args=-Dc_args=-DBUILD_STATIC -DNO_SDL2',
+                    '-Csetup-args=-Dc_link_args=-lfreetype -lharfbuzz -lSDL2_ttf -lSDL2_image -logg -lvorbis -lSDL2_mixer_ogg',
+                ]
+            )
+            wheel_dir = Path("./whl")
+
         if not wheel_dir:
             # editable install
             if not quiet:
@@ -261,6 +282,7 @@ def cmd_build(self):
         info_str = (
             f"with {debug=}, {lax=}, {sdl3=}, {stripped=}, {coverage=} and {sanitize=}"
         )
+
         if wheel_dir:
             pprint(f"Building wheel at '{wheel_dir}' ({info_str})")
             cmd_run(
@@ -467,6 +489,9 @@ def prep_env(self):
             bin = venv_path / "Scripts" if os.name == "nt" else venv_path / "bin"
             self.py = bin / "python"
         else:
+            if WASM:
+                if os.environ.get('EMSDK', None):
+                    self.py = Path(os.environ.get('SDKROOT') + "/python3-wasm")
             pprint(f"Using python '{self.py}'")
 
         # set PATH to give high priority to executables in the python bin folder
@@ -487,6 +512,12 @@ def prep_env(self):
 
         deps = self.deps.get(self.args["command"], set())
         ignored_deps = self.args["ignore_dep"]
+
+        if WASM:
+            ignored_deps = list(deps)
+            print("IGNORING:", ignored_deps)
+            deps.clear()
+
         deps_filtered = deps.copy()
         if ignored_deps:
             for constr in deps:

meson-cross-emscripten.ini

@@ -0,0 +1,14 @@
+[host_machine]
+system = 'emscripten'
+cpu_family = 'wasm'
+cpu = 'wasm'
+endian = 'little'
+
+
+[binaries]
+c = 'emcc'
+cpp = 'em++'
+ar = 'llvm-ar'
+strip = 'llvm-strip'
+exe_wrapper = 'node'
+pkgconfig_path = '/opt/python-wasm-sdk/devices/x86_64/usr/bin/pkgconfig'

meson.build

@@ -35,7 +35,7 @@ elif host_machine.system() == 'android'
     )
 elif host_machine.system() == 'emscripten'
     plat = 'emscripten'
-    error(
+    warning(
         'The meson buildconfig of pygame-ce does not support emscripten for now. ',
         'However it may be added in the future',
     )
@@ -229,7 +229,8 @@ if plat == 'win' and host_machine.cpu_family().startswith('x86')
     install_data(dlls, install_dir: pg_dir, install_tag: 'pg-tag')
 
 else
-    bases = ['/usr/local', '/usr', '/opt/homebrew', '/opt/local']
+#    bases = ['/usr/local', '/usr', '/opt/homebrew', '/opt/local']
+    bases = ['/opt/python-wasm-sdk/emsdk/upstream/emscripten/cache/sysroot', '/opt/python-wasm-sdk/devices/emsdk/usr']
     foreach inc_dir : bases
         foreach sub_inc : [
             '',
@@ -244,7 +245,7 @@ else
     endforeach
 
     foreach lib_dir : bases
-        foreach sub_lib : ['lib', 'lib64']
+        foreach sub_lib : ['lib', 'lib64', 'lib/wasm32-emscripten/pic', 'lib/wasm32-emscripten']
             full_lib = lib_dir / sub_lib
             if fs.exists(full_lib)
                 pg_lib_dirs += full_lib
@@ -299,7 +300,11 @@ if not sdl_ttf_dep.found()
     )
 endif
 
-freetype_dep = dependency('freetype2', required: false)
+if plat == 'emscripten'
+    freetype_dep = dependency('freetype2', required: false)
+else
+    freetype_dep = dependency('freetype2', required: true)
+endif
 if not freetype_dep.found()
     freetype_dep = declare_dependency(
         include_directories: pg_inc_dirs,
@@ -311,7 +316,16 @@ if not freetype_dep.found()
     )
 endif
 
+
+
+
 portmidi_dep = dependency('portmidi', required: false)
+
+portmidi_deps = []
+
+if get_option('midi').disabled()
+    # disable pypm build
+else
 if not portmidi_dep.found()
     portmidi_dep = declare_dependency(
         include_directories: pg_inc_dirs,
@@ -323,8 +337,6 @@ if not portmidi_dep.found()
     )
 endif
 
-portmidi_deps = [portmidi_dep]
-
 if portmidi_dep.found()
     # porttime can be a separate library, or be inbuilt in portmidi.
     # So if it is available as a separate library, include it as a dependency
@@ -341,6 +353,7 @@ if portmidi_dep.found()
         portmidi_deps += porttime_dep
     endif
 endif
+endif
 
 pg_base_deps = [sdl_dep, py_dep]
 

src_c/meson.build

@@ -1,5 +1,4 @@
 # first the "required" modules
-
 base = py.extension_module(
     'base',
     'base.c',
@@ -9,6 +8,8 @@ base = py.extension_module(
     subdir: pg,
 )
 
+if host_machine.system() != 'emscripten'
+
 color = py.extension_module(
     'color',
     'color.c',
@@ -458,3 +459,10 @@ if portmidi_dep.found()
         subdir: pg,
     )
 endif
+
+else # !emscripten
+# TODO: sizes !
+if sdl_api != 3
+subdir('_sdl2')
+endif
+endif # emscripten