set(USE_SYSTEM_APIExtractor ON CACHE BOOL "Use system version of APIExtractor")
set(USE_SYSTEM_GeneratorRunner ON CACHE BOOL "Use system version of GeneratorRunner")
set(USE_SYSTEM_GOCR ON CACHE BOOL "Use system version of GOCR")
set(USE_SYSTEM_GraphicsMagick ON CACHE BOOL "Use system version of GraphicsMagick")
set(USE_SYSTEM_Ocrad ON CACHE BOOL "Use system version of Ocrad")
set(USE_SYSTEM_OpenBabel ON CACHE BOOL "Use system version of OpenBabel")
set(USE_SYSTEM_OSRA ON CACHE BOOL "Use system version of OSRA")
set(USE_SYSTEM_Potrace ON CACHE BOOL "Use system version of Potrace")
set(USE_SYSTEM_PySide ON CACHE BOOL "Use system version of PySide")
set(USE_SYSTEM_Shiboken ON CACHE BOOL "Use system version of Shiboken")
set(USE_SYSTEM_TCLAP ON CACHE BOOL "Use system version of TCLAP")

set(USE_SYSTEM_QGLViewer ON CACHE BOOL "Use system version of QGLViewer")
set(USE_SYSTEM_GLEW ON CACHE BOOL "Use system version of GLEW")
set(USE_SYSTEM_RDFLib ON CACHE BOOL "Use system version of GLEW")
