--- src/Makefile.am.link	2012-01-05 00:10:59.758547046 +0800
+++ src/Makefile.am	2012-01-05 00:11:26.168549368 +0800
@@ -111,6 +111,7 @@
     $(gmpc_GOBCFILES)
 
 gmpc_LDADD=\
+	   -lm \
            libeggsmclient.la
 
 
--- src/Makefile.in.link	2012-01-05 00:11:35.598548666 +0800
+++ src/Makefile.in	2012-01-05 00:11:46.748548631 +0800
@@ -498,7 +498,7 @@
 nodist_gmpc_SOURCES = \
     $(gmpc_GOBCFILES)
 
-gmpc_LDADD = libeggsmclient.la $(am__append_1)
+gmpc_LDADD = libeggsmclient.la $(am__append_1) -lm
 BUILT_SOURCES = \
               $(gmpc_GOBSTAMPFILES)\
               revisiont.h