make -f Makefile.linux
make[1]: Entering directory '/home/bob/tmp/a-effacer/prototracker'
g++ -O3 -Wformat -std=c++11 -o prototracker src/*.cpp -lSDL2_image -lSDL2main `sdl2-config --cflags --libs` -s
src/Main.cpp: In function ‘void infinityAndBeyond(void*)’:
src/Main.cpp:114:149: error: ‘SDL_GameControllerFromInstanceID’ was not declared in this scope
     context.mainEditor.showMessageV(Editor::MessageInfo, "Unplugged %s", SDL_GameControllerName(SDL_GameControllerFromInstanceID(event.cdevice.which)));
                                                                                                                                                     ^
src/SequenceRowEditor.cpp: In member function ‘virtual bool SequenceRowEditor::onEvent(SDL_Event&)’:
src/SequenceRowEditor.cpp:167:101: error: ‘SDL_GameControllerFromInstanceID’ was not declared in this scope
     bool aPressed = SDL_GameControllerGetButton(SDL_GameControllerFromInstanceID(event.cbutton.which), SDL_CONTROLLER_BUTTON_A);
                                                                                                     ^
src/TrackEditor.cpp: In member function ‘virtual bool TrackEditor::onEvent(SDL_Event&)’:
src/TrackEditor.cpp:371:101: error: ‘SDL_GameControllerFromInstanceID’ was not declared in this scope
     bool aPressed = SDL_GameControllerGetButton(SDL_GameControllerFromInstanceID(event.cbutton.which), SDL_CONTROLLER_BUTTON_A);
                                                                                                     ^
Makefile.linux:5: recipe for target 'prototracker' failed
make[1]: *** [prototracker] Error 1
make[1]: Leaving directory '/home/bob/tmp/a-effacer/prototracker'
Makefile:7: recipe for target 'linux' failed
make: *** [linux] Error 2