Boost python not found when building cv_bridge under OSX

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I am having the problem that cv_bridge can't find my boost libraries although it must have found them for the packages before when installing hydro on OSX.
When I look into /usr/local/include I can see all the boost files and folders, also python.

What's the problem here?

When I print the output of my boost libraries it says none. CMAkeLists.txt:

cmake_minimum_required(VERSION 2.8)
project(cv_bridge)

find_package(catkin REQUIRED COMPONENTS rosconsole sensor_msgs)

find_package(Boost REQUIRED python)
find_package(OpenCV REQUIRED)
message("Include dirs of boost: " ${Boost_INCLUDE_DIRS} )
message("Libs of boost: " ${Boost_LIBRARIES} )

Output:

CMake Error at /usr/local/Cellar/cmake/2.8.12.2/share/cmake/Modules/FindBoost.cmake:1111 (message):
  Unable to find the requested Boost libraries.

  Boost version: 1.55.0

  Boost include path: /usr/local/include

  Could not find the following Boost libraries:

          boost_python

  No Boost libraries were found.  You may need to set BOOST_LIBRARYDIR to the
  directory containing Boost libraries or BOOST_ROOT to the location of
  Boost.
Call Stack (most recent call first):
  CMakeLists.txt:6 (find_package)


Include dirs of boost: /usr/local/include
Libs of boost: