$(LIBVIRT_CFLAGS) $(LIBXML2_CFLAGS) \
$(WARN_CFLAGS) $(WERROR_CFLAGS)
-libguestfs_la_CPPFLAGS = -I$(top_srcdir)/gnulib/lib
+libguestfs_la_CPPFLAGS = -I$(top_srcdir)/gnulib/lib -I$(top_builddir)/gnulib/lib
if HAVE_RPCGEN
guestfs_protocol.c: guestfs_protocol.x