diff -up nautilus-2.29.90/configure.in.bak nautilus-2.29.90/configure.in
--- nautilus-2.29.90/configure.in.bak	2010-02-09 17:10:08.000000000 +0100
+++ nautilus-2.29.90/configure.in	2010-02-09 17:17:21.000000000 +0100
@@ -329,7 +329,7 @@ dnl libnautilus-extension
 LIBNAUTILUS_EXTENSION_MODULES="glib-2.0 gtk+-2.0"
 LIBNAUTILUS_EXTENSION_CFLAGS="`$PKG_CONFIG --cflags $LIBNAUTILUS_EXTENSION_MODULES` $WARNING_CFLAGS"
 AC_SUBST(LIBNAUTILUS_EXTENSION_CFLAGS)
-LIBNAUTILUS_EXTENSION_LIBS="`$PKG_CONFIG --libs $LIBNAUTILUS_EXTENSION_MODULES`"
+LIBNAUTILUS_EXTENSION_LIBS="`$PKG_CONFIG --libs $LIBNAUTILUS_EXTENSION_MODULES` -lm"
 AC_SUBST(LIBNAUTILUS_EXTENSION_LIBS)
 
 dnl core nautilus