diff -urp yajl-2.0.4/src/CMakeLists.txt yajl-2.0.4-libm/src/CMakeLists.txt
--- yajl-2.0.4/src/CMakeLists.txt	2016-04-28 06:12:34.575040354 -0400
+++ yajl-2.0.4-libm/src/CMakeLists.txt	2016-04-28 06:19:36.436728421 -0400
@@ -39,6 +39,11 @@ ADD_LIBRARY(yajl_s STATIC ${SRCS} ${HDRS
 
 ADD_LIBRARY(yajl SHARED ${SRCS} ${HDRS} ${PUB_HDRS})
 
+IF (UNIX)
+  TARGET_LINK_LIBRARIES(yajl m)
+  TARGET_LINK_LIBRARIES(yajl_s m)
+ENDIF(UNIX)
+
 #### setup shared library version number
 SET_TARGET_PROPERTIES(yajl PROPERTIES
                       DEFINE_SYMBOL YAJL_SHARED