commit 57d2d3b900c7d57e167fb7c90b36ca8c9c80b8bd
Author: Ian Stakenvicius <axs@gentoo.org>
Date:   Mon Apr 28 10:53:57 2014 -0400

    autotools: fixed underlinking issue with libm
    
    Signed-off-by: Ian Stakenvicius <axs@gentoo.org>

diff --git a/freex3d/configure.ac b/freex3d/configure.ac
index 49db07c..48b09c8 100644
--- a/freex3d/configure.ac
+++ b/freex3d/configure.ac
@@ -73,6 +73,8 @@ AC_PROG_GCC_TRADITIONAL
 dnl AC_FUNC_MALLOC
 AC_CHECK_FUNCS([strchr strrchr strdup strndup strerror getopt getopt_long getopt_long_only malloc calloc realloc usleep gettimeofday])
 
+# Check for math
+AC_CHECK_LIBM
 
 # ====================================================
 # FreeWRL specific configuration: target system
diff --git a/freex3d/src/lib/Makefile.am b/freex3d/src/lib/Makefile.am
index ae7fb05..1b1af8a 100644
--- a/freex3d/src/lib/Makefile.am
+++ b/freex3d/src/lib/Makefile.am
@@ -40,7 +40,8 @@ EXTERNAL_LIBS = \
 				$(PNG_LIBS) \
 				$(LIBCURL_LIBS) \
 				$(IMLIB2_LIBS) \
-				$(LIBLO_LIBS)
+				$(LIBLO_LIBS) \
+				$(LIBM)
 
 
 # X11 flags specific to x11 target (default on Linux -- optional on Mac)