When trying to compile my custom module for android I ran up against problems with the android NDK's limited C++ standard library support. In the end I was able to get around the problems by swapping header files such as for <string.h>. However, this is not ideal, especially if I want to use the STL in the future.
It would appear I need to edit the Godot Scons scripts to include this functionality, but I have no idea where to start. Could somebody point me in the right direction?