--- Makefile.am	2013-09-24 22:20:22.232889732 +0200
+++ Makefile.am	2013-09-24 22:20:11.080890189 +0200
@@ -9,6 +9,8 @@
   lib3ds-config.in \
   lib3ds.sln
 
+AM_LDFLAGS= -lm
+
 m4datadir = $(datadir)/aclocal
 m4data_DATA = lib3ds.m4