Disable errors for undefined symbols

Author: JohnTitor

ci/emscripten.sh

@@ -39,7 +39,7 @@ hide_output ./emsdk install 1.39.12
 # shellcheck disable=SC1091
 source ./emsdk_env.sh
 echo "main(){}" > a.c
-HOME=/emsdk-portable/ emcc a.c
+HOME=/emsdk-portable/ emcc -s ERROR_ON_UNDEFINED_SYMBOLS=0 a.c
 rm -f a.*
 
 # Make emsdk usable by any user