```
CMake Error at /usr/share/cmake-2.8/Modules/ExternalProject.cmake:1278 (get_property):
  get_property could not find TARGET gflags_catkin.  Perhaps it has not yet
  been created.
Call Stack (most recent call first):
  /usr/share/cmake-2.8/Modules/ExternalProject.cmake:1481 (_ep_add_configure_command)
  thirdparty_submodules/ceres_catkin/CMakeLists.txt:19 (ExternalProject_Add)
```