CMake Error at /usr/local/share/cmake/Modules/FindBoost.cmake:2049 (message):
  Unable to find the requested Boost libraries.

  Boost version: 1.69.0

  Boost include path: /usr/local/include

  Could not find the following Boost libraries:

          boost_signals

  Some (but not all) of the required Boost libraries were found.  You may
  need to install these additional Boost libraries.  Alternatively, 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:40 (find_package)

--- CMakeLists.txt.orig	2015-01-10 17:48:08 UTC
+++ CMakeLists.txt
@@ -38,7 +38,7 @@ find_package (SDL_image REQUIRED)
 find_package (OpenGL REQUIRED)
 find_package (GLEW REQUIRED)
 find_package (Boost 1.37 REQUIRED 
-  COMPONENTS filesystem signals program_options system) 
+  COMPONENTS filesystem program_options system) 
 find_package (Freetype REQUIRED)
 
 if (NOT WIN32)