diff --git a/config_host.mk.in b/config_host.mk.in
index 86424ef87d46..5dd2b8f246e2 100644
--- a/config_host.mk.in
+++ b/config_host.mk.in
@@ -513,6 +513,7 @@ export SYSTEM_LIBCROCO=@SYSTEM_LIBCROCO@
 export SYSTEM_LIBEXTTEXTCAT=@SYSTEM_LIBEXTTEXTCAT@
 export SYSTEM_LIBEXTTEXTCAT_DATA=@SYSTEM_LIBEXTTEXTCAT_DATA@
 export SYSTEM_LIBGSF=@SYSTEM_LIBGSF@
+export SYSTEM_LIBLANGTAG=@SYSTEM_LIBLANGTAG@
 export SYSTEM_LIBMSPUB=@SYSTEM_LIBMSPUB@
 export SYSTEM_LIBPNG=@SYSTEM_LIBPNG@
 export SYSTEM_LIBRSVG=@SYSTEM_LIBRSVG@
diff --git a/configure.in b/configure.in
index 0e06effce477..657bd0fd5b6d 100644
--- a/configure.in
+++ b/configure.in
@@ -10979,6 +10979,12 @@ fi
 AC_SUBST(GLIB_CFLAGS)
 AC_SUBST(GLIB_LIBS)
 
+dnl So far AFAIK no system has liblangtag, set this unconditionally for now.
+
+SYSTEM_LIBLANGTAG=NO
+BUILD_TYPE="$BUILD_TYPE LIBLANGTAG"
+AC_SUBST(SYSTEM_LIBLANGTAG)
+
 
 dnl ===================================================================
 dnl Test whether to build gettext runtime (libintl) or rely on the