(mailutils_config_CFLAGS): Define I18NLIBS

@@ -106,4 +106,10 @@ libmailbox_la_LDFLAGS = -version-info 0:0:0
 
 mailutils_config_SOURCES = mailutils-config.c
 mailutils_config_LDADD = ./libmailbox.la ../lib/libmailutils.la @LTLIBINTL@
-mailutils_config_CFLAGS = -DCOMPILE_FLAGS="\"-I$(includedir)\"" -I$(top_srcdir)/intl -DLINK_FLAGS="\"-L$(libdir)\"" -DAUTHLIBS="\"`echo $(AUTHLIBS) | sed 's/.*libmuauth.la *//'`\"" -DGUILE_LIBS="\"$(GUILE_LIBS)\""
+mailutils_config_CFLAGS = -DCOMPILE_FLAGS="\"-I$(includedir)\"" \
+  -I$(top_srcdir)/intl \
+  -DLINK_FLAGS="\"-L$(libdir)\"" \
+  -DAUTHLIBS="\"`echo $(AUTHLIBS) | sed 's/.*libmuauth.la *//'`\"" \
+  -DGUILE_LIBS="\"$(GUILE_LIBS)\"" \
+  -DI18NLIBS="\"`test $(BUILD_INCLUDED_LIBINTL) = no && echo $(LIBINTL)`\""
+