Last Step of installation on RPi Failing

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I'm following the Raspberry Pi Indigo installation guide here: http://wiki.ros.org/ROSberryPi/Instal...

CMake is failing on the last step with this error: http://i.imgur.com/P9l5Gnr.jpg

==> Processing catkin package: 'ecl_time'
==> Building with env: '/opt/ros/indigo/env.sh'
==> cmake /home/pi/ros_catkin_ws/src/ecl_core/ecl_time -DCATKIN_DEVEL_PREFIX=/home/pi/ros_catkin_ws/devel_isolated/ecl_time -DCMA
-- Using CATKIN_DEVEL_PREFIX: /home/pi/ros_catkin_ws/devel_isolated/ecl_time
-- Using CMAKE_PREFIX_PATH: /opt/ros/indigo
-- This workspace overlays: /opt/ros/indigo
-- Using PYTHON_EXECUTABLE: /usr/bin/python
-- Using Debian Python package layout
-- Using empy: /usr/bin/empy
-- Using CATKIN_ENABLE_TESTING: ON
-- Call enable_testing()
-- Using CATKIN_TEST_RESULTS_DIR: /home/pi/ros_catkin_ws/build_isolated/ecl_time/test_results
-- Found gtest sources under '/usr/src/gtest': gtests will be built
-- Using Python nosetests: /usr/bin/nosetests-2.7
-- catkin 0.6.14
CMake Error at /opt/ros/indigo/share/ecl_build/cmake/ecl_cx11.cmake:17 (message):
  Requested cxx11 flags, but this compiler does not support it.
Call Stack (most recent call first):
  CMakeLists.txt:40 (ecl_enable_cxx11_compiler)


-- Configuring incomplete, errors occurred!
<== Failed to process package 'ecl_time': 
  Command '['/opt/ros/indigo/env.sh', 'cmake', '/home/pi/ros_catkin_ws/src/ecl_core/ecl_time', '-DCATKIN_DEVEL_PREFIX=/home/pi/ros']' returned non-zero exit status 1

Reproduce this error by running:
==> cd /home/pi/ros_catkin_ws/build_isolated/ecl_time && /opt/ros/indigo/env.sh cmake /home/pi/ros_catkin_ws/src/ecl_core/ecl_timelease -G 'Unix Makefiles'

Command failed, exiting.

I'm not sure how to correct this.