Web: Workaround Emscripten 3.1.42+ LTO regression

Fixes #80010.
2023-09-05 14:56:53 +02:00
parent e7208420bc
commit b064008c07
2 changed files with 7 additions and 2 deletions
--- a/platform/web/detect.py
+++ b/platform/web/detect.py
@ -118,6 +118,11 @@ def configure(env: "Environment"):
        else:
            env.Append(CCFLAGS=["-flto"])
            env.Append(LINKFLAGS=["-flto"])
+        # Workaround https://github.com/emscripten-core/emscripten/issues/19781.
+        cc_version = get_compiler_version(env)
+        cc_semver = (int(cc_version["major"]), int(cc_version["minor"]), int(cc_version["patch"]))
+        if cc_semver >= (3, 1, 42):
+            env.Append(LINKFLAGS=["-Wl,-u,scalbnf"])

    # Sanitizers
    if env["use_ubsan"]: