I've added a pull request for a gcc change and a fix for header files not found.
I could build the engine now with:
cd spriterengine
LANG=C g++ -std=c++14 -shared -fPIC -I. */*.cpp -o spriterengine.so
(LANG=C only because I like the terminal output in English)
@lucid OK thanks, nice new wrappers.
I updated my fork https://github.com/Breush/SpriterPlusPlus with the PugiXml loaders.
You should check example/override/pugixml* and the pugixml at the root directory.
Works all right for me.