--- a/recipe.sh	Wed Jun 20 17:48:52 2018 +0800
+++ b/recipe.sh	Wed Jun 20 17:56:57 2018 +0800
@@ -10,8 +10,14 @@
 emcmake cmake ../
 emmake make gme
 
+(
+    printf '['
+    grep -P '(?<=Module\.)[a-zA-Z][a-zA-Z0-9_]+' -o player.js | sort -u | awk '{printf "\"" $0 "\", "}' | sed '$s/, $//'
+    echo ']'
+) > runtime_methods.json
+
 # Original, big and inclusive
-emcc gme/libgme.so -o libgme.O0.js -s LINKABLE=1 -s EXPORT_ALL=1 -O0
+emcc gme/libgme.so -o libgme.O0.js -O0 -s LINKABLE=1 -s EXPORT_ALL=1 -s EXTRA_EXPORTED_RUNTIME_METHODS=@runtime_methods.json -s WASM=0
 
 (
     echo '['
@@ -20,7 +26,7 @@
 ) > exported_functions.json
 
 # Smaller and hand-picked
-emcc gme/libgme.so -o libgme.O2.js -s NO_FILESYSTEM=1 -s EXPORTED_FUNCTIONS=@exported_functions.json -O2
+emcc gme/libgme.so -o libgme.O2.js -O2 -s NO_FILESYSTEM=1 -s EXPORTED_FUNCTIONS=@exported_functions.json -s EXTRA_EXPORTED_RUNTIME_METHODS=@runtime_methods.json -s WASM=0
 
 # Smaller still
-emcc gme/libgme.so -o libgme.Oz.js -s NO_FILESYSTEM=1 -s EXPORTED_FUNCTIONS=@exported_functions.json -Oz --llvm-lto 1
+emcc gme/libgme.so -o libgme.Oz.js -Oz --llvm-lto 1 -s NO_FILESYSTEM=1 -s EXPORTED_FUNCTIONS=@exported_functions.json -s EXTRA_EXPORTED_RUNTIME_METHODS=@runtime_methods.json -s WASM=0