diff -up ./src/Makefile.in.orig ./src/Makefile.in
--- ./src/Makefile.in.orig	2011-09-13 12:55:02.182429152 +0300
+++ ./src/Makefile.in	2011-09-13 12:55:23.805828773 +0300
@@ -308,7 +308,8 @@ libosmgpsmap_la_LDFLAGS = \
 	$(no_undefined)
 
 libosmgpsmap_la_LIBADD = \
-    $(OSMGPSMAP_LIBS)
+    $(OSMGPSMAP_LIBS) \
+    -lm 
 
 sources_private_h = \
 	converter.h             \