OPTION(AQUARIA_INTERNAL_TINYXML2 "Always use included TinyXML2 library" TRUE)
if(AQUARIA_INTERNAL_TINYXML2)
    message(STATUS "Using internal copy of TinyXML2")
    set(TINYXML2_INCLUDE_DIRS "${CMAKE_CURRENT_SOURCE_DIR}/tinyxml2" CACHE INTERNAL "")
    add_library(tinyxml2 tinyxml2/tinyxml2.cpp tinyxml2/tinyxml2.h)
else()
    find_package(TinyXML2 REQUIRED)
endif()