diff -up VTK/CMake/vtkModuleMacros.cmake.system VTK/CMake/vtkModuleMacros.cmake --- VTK/CMake/vtkModuleMacros.cmake.system 2013-12-24 19:17:43.000000000 -0700 +++ VTK/CMake/vtkModuleMacros.cmake 2013-12-27 20:28:22.375573277 -0700 @@ -682,7 +682,7 @@ macro(vtk_module_third_party _pkg) message(FATAL_ERROR "Cannot specify both LIBRARIES and NO_LIBRARIES") endif() - option(VTK_USE_SYSTEM_${_upper} "Use system-installed ${_pkg}" OFF) + option(VTK_USE_SYSTEM_${_upper} "Use system-installed ${_pkg}" ${VTK_USE_SYSTEM_LIBRARIES}) mark_as_advanced(VTK_USE_SYSTEM_${_upper}) if(VTK_USE_SYSTEM_${_upper}) diff -up VTK/CMakeLists.txt.system VTK/CMakeLists.txt --- VTK/CMakeLists.txt.system 2013-12-27 20:28:22.374573241 -0700 +++ VTK/CMakeLists.txt 2013-12-27 20:28:48.118669708 -0700 @@ -132,6 +132,11 @@ if (CMAKE_CROSSCOMPILING AND NOT COMPILE endif() #----------------------------------------------------------------------------- +# Do we try to use system libraries by default? +OPTION(VTK_USE_SYSTEM_LIBRARIES "Use the system's libraries by default." OFF) +MARK_AS_ADVANCED(VTK_USE_SYSTEM_LIBRARIES) + +#----------------------------------------------------------------------------- # The third party macros are still used in one or two third party builds. include(vtkThirdParty)