--- Demo/CMakeLists.txt~ 2010-01-19 14:50:25.000000000 -0600
+++ Demo/CMakeLists.txt 2010-07-15 08:41:34.182317902 -0500
@@ -17,7 +17,7 @@
include_directories(${chipmunk_demos_include_dirs})
add_executable(chipmunk_demos ${chipmunk_demos_source_files})
-target_link_libraries(chipmunk_demos ${chipmunk_demos_libraries})
+target_link_libraries(chipmunk_demos ${chipmunk_demos_libraries} -lm)
if(INSTALL_DEMOS)
install(TARGETS chipmunk_demos RUNTIME DESTINATION bin)