[makefile] build Jessie slave unless NOJESSIE is specified (#3546)

yxieca · qiluo-msft · commit 1515e39e71d7 · 2019-10-01T21:12:19.000-07:00
* [makefile] build Jessie slave unless NOJESSIE is specified
* fix if condition
diff --git a/Makefile b/Makefile
@@ -17,4 +17,7 @@ endif
 
 clean reset init configure showtag sonic-slave-build sonic-slave-bash :
 	@echo "+++ Making $@ +++"
+ifeq ($(NOJESSIE), 0)
+	make -f Makefile.work $@
+endif
 	BLDENV=stretch make -f Makefile.work $@
