The native-EH migration left tests/gal-regression/wasm/Makefile on the old
Emscripten JS-exception model (-sNO_DISABLE_EXCEPTION_CATCHING, no
-fwasm-exceptions). The wxWidgets libs it links are now built with
-fwasm-exceptions, so wasm-ld couldn't resolve __cpp_exception / __c_longjmp and
the "Build GAL WebGL test app" CI step failed. This was masked until now because
the host post-process (finalize) bug killed every run before this step ran.
Compile and link with DEPS_EH_FLAGS (-fwasm-exceptions -sSUPPORT_LONGJMP=wasm
-sWASM_LEGACY_EXCEPTIONS=1), honoring the value build-gal-webgl-test.sh exports
via env.sh with a Makefile ?= fallback — matching the wxWidgets test-app build.
Drop the now-incompatible -sNO_DISABLE_EXCEPTION_CATCHING.
Verified locally: ./scripts/build-gal-webgl-test.sh links clean against the
native-EH wx libs and produces gal_webgl_test.{js,wasm}.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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