How to compile native extension with C++11 features? (DEF-2594) (SOLVED)

Questions
14

I want to try adding flags for the compiler on Android, but I am getting “Internal Server Error”, even with empty flags list.

name: "openal"

platforms:
    armv7-android:
        context:
            flags: []
            frameworks: []
            linkFlags: []
            libs: []

Description	Resource	Path	Location	Type
Internal Server Error	ext.manifest	/extension-openal/content/openal	line 1	Problem

I guess that’s not normal?