ws2_32: Test for linux/irda.h.
diff --git a/configure.ac b/configure.ac
index e637722..ef808d8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -479,7 +479,7 @@
      #include <netinet/tcp_timer.h>
      #endif])
 
-AC_CHECK_HEADERS([linux/ipx.h],,,
+AC_CHECK_HEADERS([linux/ipx.h linux/irda.h],,,
     [#include <sys/types.h>
      #ifdef HAVE_ASM_TYPES_H
      # include <asm/types.h>