Set what were default values for some emscripten linkflags

- Set `-sSTACK_SIZE` to what it was before emscripten 3.1.27.
  It was renamed in 3.1.25 so also set `-sTOTAL_SIZE` for older
  versions for consistency.
- Set `-sDEFAULT_PTHREAD_STACK_SIZE` to what it was before 3.1.30.

Co-authored-by: Rémi Verschelde <[email protected]>
(cherry picked from commit 8e5fbd43488ad39a9b987c9abc38134841f44024)

CHANGELOG.md

@@ -123,6 +123,7 @@ branches, and linked at the [end of this file](#Past-releases).
 #### Porting
 
 - Do not consume mouse messages in windows with `no_focus` on Windows OS ([GH-85484](https://github.com/godotengine/godot/pull/85484)).
+- Set what were default values for Web platform linker flags `-sSTACK_SIZE` and `-sDEFAULT_PTHREAD_STACK_SIZE` ([GH-86036](https://github.com/godotengine/godot/pull/86036)).
 
 #### Rendering
 

platform/web/detect.py

@@ -186,9 +186,18 @@ def configure(env: "Environment"):
     env["LIBPREFIXES"] = ["$LIBPREFIX"]
     env["LIBSUFFIXES"] = ["$LIBSUFFIX"]
 
+    # Get version info for checks below.
+    cc_version = get_compiler_version(env)
+    cc_semver = (cc_version["major"], cc_version["minor"], cc_version["patch"])
+
     env.Prepend(CPPPATH=["#platform/web"])
     env.Append(CPPDEFINES=["WEB_ENABLED", "UNIX_ENABLED"])
 
+    if cc_semver >= (3, 1, 25):
+        env.Append(LINKFLAGS=["-s", "STACK_SIZE=5MB"])
+    else:
+        env.Append(LINKFLAGS=["-s", "TOTAL_STACK=5MB"])
+
     if env["opengl3"]:
         env.AppendUnique(CPPDEFINES=["GLES3_ENABLED"])
         # This setting just makes WebGL 2 APIs available, it does NOT disable WebGL 1.
@@ -203,13 +212,10 @@ def configure(env: "Environment"):
     env.Append(CPPDEFINES=["PTHREAD_NO_RENAME"])
     env.Append(CCFLAGS=["-s", "USE_PTHREADS=1"])
     env.Append(LINKFLAGS=["-s", "USE_PTHREADS=1"])
+    env.Append(LINKFLAGS=["-s", "DEFAULT_PTHREAD_STACK_SIZE=2MB"])
     env.Append(LINKFLAGS=["-s", "PTHREAD_POOL_SIZE=8"])
     env.Append(LINKFLAGS=["-s", "WASM_MEM_MAX=2048MB"])
 
-    # Get version info for checks below.
-    cc_version = get_compiler_version(env)
-    cc_semver = (cc_version["major"], cc_version["minor"], cc_version["patch"])
-
     if env["lto"] != "none":
         # Workaround https://github.com/emscripten-core/emscripten/issues/19781.
         if cc_semver >= (3, 1, 42) and cc_semver < (3, 1, 46):