v.label.sa: conditionalize compilation upon presence of FTLIB

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@71685 15284696-431f-4ddb-bdfa-cd5b030d7da7

vector/v.label.sa/Makefile

@@ -10,5 +10,6 @@ EXTRA_CFLAGS = $(VECT_CFLAGS)
 
 include $(MODULE_TOPDIR)/include/Make/Module.make
 
+ifneq ($(strip $(FTLIB)),)
 default: cmd
-
+endif