# liblangtag/lt-macros.h:17:5: error: "HAVE_SYS_PARAM_H" is not defined [-Werror=undef]

diff -ru UnpackedTarball/langtag.orig/liblangtag/lt-macros.h UnpackedTarball/langtag/liblangtag/lt-macros.h
--- UnpackedTarball/langtag.orig/liblangtag/lt-macros.h	2013-04-30 16:09:19.362392416 +0200
+++ UnpackedTarball/langtag/liblangtag/lt-macros.h	2013-04-30 18:01:13.275188759 +0200
@@ -14,7 +14,7 @@
 #error "Only <liblangtag/langtag.h> can be included directly."
 #endif
 
-#if HAVE_SYS_PARAM_H
+#if defined(HAVE_SYS_PARAM_H) && HAVE_SYS_PARAM_H
 #include <sys/param.h>
 #endif