cmake: add hidden value for testing system smtk

CMakeLists.txt

@@ -322,6 +322,8 @@ elseif (CMB_SUPERBUILD_MODE STREQUAL "DEVELOPER")
   set_property(CACHE ENABLE_smtk_BUILD_MODE
     PROPERTY
       VALUE Developer)
+elseif (CMB_SUPERBUILD_MODE STREQUAL "DEVELOPMENT")
+  # If this is set, let the options through unmodified.
 else ()
   message(FATAL_ERROR "Unrecognized superbuild mode: ${CMB_SUPERBUILD_MODE}")
 endif ()

Projects/cmb.cmake

@@ -11,8 +11,8 @@ endif ()
 set(CMB_TEST_DATA_ROOT "" CACHE PATH "Location of CMB's testing data")
 
 add_external_project_or_just_build_dependencies(cmb
-  DEPENDS boost remus vxl kml gdal qt python paraview molequeue smtk
-  DEPENDS_OPTIONAL moab triangle
+  DEPENDS boost remus vxl kml gdal qt python paraview molequeue
+  DEPENDS_OPTIONAL moab triangle smtk
   CMAKE_ARGS
     ${extra_cmake_args}
     -DKML_DIR:PATH=<INSTALL_DIR>

Projects/smtk.cmake

@@ -65,4 +65,5 @@ if(shiboken_ENABLED)
 endif()
 
 add_extra_cmake_args(
-  -DSMTK_DIR:PATH=<INSTALL_DIR>/lib/cmake/SMTK)
+  -DSMTK_DIR:PATH=<INSTALL_DIR>/lib/cmake/SMTK
+  -DUSE_SYSTEM_SMTK:BOOL=ON)