Add Chromium-only Blender WebEngine parity work

tools/web/check-emscripten.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+source "${repo_root}/tools/web/emscripten-env.sh"
+
+build_dir="${repo_root}/build_web/toolchain-smoke"
+mkdir -p "${build_dir}"
+
+emcc "${repo_root}/web/engine/emscripten_smoke.c" \
+  -O2 \
+  ${WEB_EMSCRIPTEN_CFLAGS} \
+  ${WEB_EMSCRIPTEN_LDFLAGS} \
+  -o "${build_dir}/smoke.js"
+
+emcc "${repo_root}/web/engine/emscripten_smoke.c" \
+  -O2 -pthread \
+  ${WEB_EMSCRIPTEN_CFLAGS} \
+  ${WEB_EMSCRIPTEN_LDFLAGS} \
+  -sPTHREAD_POOL_SIZE=1 \
+  -o "${build_dir}/smoke-pthread.js"
+
+test -s "${build_dir}/smoke.wasm"
+test -s "${build_dir}/smoke-pthread.wasm"
+printf 'emscripten-toolchain-ok version=%s\n' "${WEB_EMSCRIPTEN_VERSION}"
+sha256sum "${build_dir}/smoke.wasm" "${build_dir}/smoke-pthread.wasm"