CMake cannot find Boost on OS X with brew

Question

I'm trying to use CMake to compile another library and it requires Boost.

I have installed both CMake and Boost using brew on OS X 10.10 Yosemite, but CMake refuses to find it. Boost is located in /usr/local/Cellar/boost/1.55.0_2

I've tried the following:

• Setting -DBoost_DIR and -DBOOST_ROOT with the above path
• Setting -DBoost_INCLUDE_DIR and -DBOOST_INCLUDEDIR with the above path + /include
• Setting any and all of these options in the CMakeLists.txt file
• Compiling Boost myself, and pointing the above vars to my own build
• Trying out similar solutions to the same problem here, here, and here. The only answer that I found that mentioned brew on OS X was this one, and the same solution did not work for me.

Why is CMake blatantly ignoring my instructions? :(

Edit: CMake output from -DBoost_DEBUG=ON

Answer 1

I found a separate homebrew package of boost-python. With it installed, CMake does find Boost:

brew install boost-python

gives me

> mkdir build ; ( cd build ; cmake .. )
-- The C compiler identification is AppleClang 6.0.0.6000056
-- The CXX compiler identification is AppleClang 6.0.0.6000056
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Found PythonInterp: /usr/local/bin/python (found version "2.7.9")
-- Found PythonLibs: /usr/lib/libpython2.7.dylib (found version "2.7.5")
-- Boost version: 1.56.0
-- Found the following Boost libraries:
--   python
-- Configuring done
-- Generating done

(I have problems linking, but that's another story)