Added library search for math and realtime library in test and example projects for x11 platform.

examples/CMakeLists.txt

@@ -1,8 +1,14 @@
 # This line is used to link with static libraries 
 # Note that the library list should be updated to be obtained from 
-# the main CMakeLists.txt 
+# the main CMakeLists.txt
 link_libraries(libglfwStatic ${GLFW_LIBRARIES} ${OPENGL_glu_LIBRARY})
 
+if (UNIX AND NOT APPLE AND NOT CYGWIN)
+    find_library(MATH_LIBRARY m)
+    find_library(REALTIME_LIBRARY rt)
+    link_libraries(${MATH_LIBRARY} ${REALTIME_LIBRARY})
+endif (UNIX AND NOT APPLE AND NOT CYGWIN)
+
 include_directories(${GLFW_SOURCE_DIR}/include
                     ${GLFW_SOURCE_DIR}/support
                     ${OPENGL_INCLUDE_DIR})

tests/CMakeLists.txt

@@ -1,6 +1,12 @@
 
 link_libraries(libglfwStatic ${GLFW_LIBRARIES} ${OPENGL_glu_LIBRARY})
 
+if (UNIX AND NOT APPLE AND NOT CYGWIN)
+    find_library(MATH_LIBRARY m)
+    find_library(REALTIME_LIBRARY rt)
+    link_libraries(${MATH_LIBRARY} ${REALTIME_LIBRARY})
+endif (UNIX AND NOT APPLE AND NOT CYGWIN)
+
 include_directories(${GLFW_SOURCE_DIR}/include
                     ${GLFW_SOURCE_DIR}/support
                     ${OPENGL_INCLUDE_DIR})