diff --git a/CMakeLists.txt b/CMakeLists.txt
index fad2f423..5ad266f8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -49,6 +49,11 @@ if (UNIX AND NOT APPLE)
     list(APPEND GLFW_INCLUDE_DIR ${OPENGL_INCLUDE_DIR})
     list(APPEND GLFW_LIBRARIES ${OPENGL_gl_LIBRARY})
 
+    find_library(MATH_LIBRARY m)
+    if (MATH_LIBRARY)
+      list(APPEND GLFW_LIBRARIES ${MATH_LIBRARY})
+    endif(MATH_LIBRARY)
+
     include(${CMAKE_CURRENT_SOURCE_DIR}/CMake/CheckX11Extensions.cmake)
     
     # Check for XRandR (modern resolution switching extension)
diff --git a/readme.html b/readme.html
index ede37bdc..8b5314d1 100644
--- a/readme.html
+++ b/readme.html
@@ -313,6 +313,7 @@ version of GLFW.</p>
   <li>[Cocoa] Bugfix: The OpenGL framework was not retrieved, making glfwGetProcAddress crash</li>
   <li>[X11] Added support for the <code>GLX_EXT_swap_control</code> extension as an alternative to <code>GLX_SGI_swap_control</code></li>
   <li>[X11] Added the POSIX <code>CLOCK_MONOTONIC</code> time source as the preferred method</li>
+  <li>[X11] Added dependency on libm, where present</li>
   <li>[X11] Bugfix: Calling <code>glXCreateContextAttribsARB</code> with an unavailable OpenGL version caused the application to terminate with a <code>BadMatch</code> Xlib error</li>
   <li>[X11] Bugfix: A synchronization point necessary for jitter-free locked cursor mode was incorrectly removed</li>
   <li>[Win32] Removed explicit support for versions of Windows older than Windows XP</li>