diff --git a/makefiles/lint/doc8/doc8.mk b/makefiles/lint/doc8/doc8.mk
index 4baf09f..b179b52 100644
--- a/makefiles/lint/doc8/doc8.mk
+++ b/makefiles/lint/doc8/doc8.mk
@@ -38,7 +38,7 @@
 # doc8 config as command line args so local makefiles to use --config
 # -----------------------------------------------------------------------
 ifdef USE_DOC8_INI
-  lint-doc8-args += --config $(ONF_MAKEDIR)/lint/doc8/doc8.ini
+  lint-doc8-args += --config $(onf-mk-dir)/lint/doc8/doc8.ini
 endif
 
 ## -----------------------------------------------------------------------
diff --git a/makefiles/lint/golang/include.mk b/makefiles/lint/golang/include.mk
index f5f363d..c317651 100644
--- a/makefiles/lint/golang/include.mk
+++ b/makefiles/lint/golang/include.mk
@@ -20,7 +20,7 @@
 
 $(if $(DEBUG),$(warning ENTER))
 
-include $(ONF_MAKEDIR)/lint/golang/sca.mk
+include $(onf-mk-dir)/lint/golang/sca.mk
 
 $(if $(DEBUG),$(warning LEAVE))
 
diff --git a/makefiles/lint/include.mk b/makefiles/lint/include.mk
index 3c9a062..ca0c7df 100644
--- a/makefiles/lint/include.mk
+++ b/makefiles/lint/include.mk
@@ -30,18 +30,18 @@
   NO-LINT-PYLINT := true
 endif
 
-include $(ONF_MAKEDIR)/lint/doc8/include.mk
-include $(ONF_MAKEDIR)/lint/golang/include.mk
-include $(ONF_MAKEDIR)/lint/groovy/include.mk
-include $(ONF_MAKEDIR)/lint/jjb.mk
-include $(ONF_MAKEDIR)/lint/json.mk
-include $(ONF_MAKEDIR)/lint/license/include.mk
-include $(ONF_MAKEDIR)/lint/make/include.mk
-include $(ONF_MAKEDIR)/lint/python/include.mk
-include $(ONF_MAKEDIR)/lint/shell/include.mk
-include $(ONF_MAKEDIR)/lint/yaml/include.mk
+include $(onf-mk-dir)/lint/doc8/include.mk
+include $(onf-mk-dir)/lint/golang/include.mk
+include $(onf-mk-dir)/lint/groovy/include.mk
+include $(onf-mk-dir)/lint/jjb.mk
+include $(onf-mk-dir)/lint/json.mk
+include $(onf-mk-dir)/lint/license/include.mk
+include $(onf-mk-dir)/lint/make/include.mk
+include $(onf-mk-dir)/lint/python/include.mk
+include $(onf-mk-dir)/lint/shell/include.mk
+include $(onf-mk-dir)/lint/yaml/include.mk
 
-include $(ONF_MAKEDIR)/lint/help.mk
+include $(onf-mk-dir)/lint/help.mk
 
 $(if $(DEBUG),$(warning LEAVE))
 
diff --git a/makefiles/lint/license/include.mk b/makefiles/lint/license/include.mk
index 21c7636..523c0f7 100644
--- a/makefiles/lint/license/include.mk
+++ b/makefiles/lint/license/include.mk
@@ -28,9 +28,9 @@
 ##--------------------##
 ##---]  INCLUDES  [---##
 ##--------------------##
-include $(ONF_MAKEDIR)/lint/license/help.mk
-include $(ONF_MAKEDIR)/lint/license/install.mk
-include $(ONF_MAKEDIR)/lint/license/reuse.mk
+include $(onf-mk-dir)/lint/license/help.mk
+include $(onf-mk-dir)/lint/license/install.mk
+include $(onf-mk-dir)/lint/license/reuse.mk
 
 # Alias targets
 lint-license     : lint-reuse
diff --git a/makefiles/lint/make/include.mk b/makefiles/lint/make/include.mk
index 2f49e88..03cb9e1 100644
--- a/makefiles/lint/make/include.mk
+++ b/makefiles/lint/make/include.mk
@@ -24,9 +24,9 @@
 $(if $(DEBUG),$(warning ENTER))
 
 ## Bleeding early import handled by makefiles/include.mk
-# include $(ONF_MAKEDIR)/lint/make/warn-undef-vars.mk
+# include $(onf-mk-dir)/lint/make/warn-undef-vars.mk
 
-include $(ONF_MAKEDIR)/lint/make/makefile.mk
+include $(onf-mk-dir)/lint/make/makefile.mk
 
 $(if $(DEBUG),$(warning LEAVE))
 
diff --git a/makefiles/lint/make/warn-undef-vars.mk b/makefiles/lint/make/warn-undef-vars.mk
index 048d56d..36e25f9 100644
--- a/makefiles/lint/make/warn-undef-vars.mk
+++ b/makefiles/lint/make/warn-undef-vars.mk
@@ -26,7 +26,9 @@
 ##   o Definitions only exist for lint target use.
 ##   o Decrease warning volume until undef sources can be cleaned up.
 ## -----------------------------------------------------------------------
-$(if $(findstring --warn-undefined-variables,$(MAKEFLAGS)),\
+$(if $(findstring $(MAKEFLAGS),--warn-undefined-variables),\
+	$(eval IS-WARN-UNDEFINED-VARIABLES := true))
+$(if $(findstring $(MAKECMDGOALS),int lint-make),\
 	$(eval IS-WARN-UNDEFINED-VARIABLES := true))
 
 ifdef IS-WARN-UNDEFINED-VARIABLES
@@ -64,6 +66,13 @@
   $(call define-if-undef,DOC8_SOURCE)
   $(call define-if-undef,have-python-files)
 
+  $(call define-if-undef,DEBUG-onf-mk-paths)
+  $(call define-if-undef,LINT_DOC8_DEBUG)
+
+  $(call define-if-undef,lint-shell-all)
+  $(call define-if-undef,lint-shell-mod)
+  $(call define-if-undef,lint-shell-src)
+
 endif # IS-WARN-UNDEFINED-VARIABLES
 
 $(if $(DEBUG),$(warning LEAVE))
diff --git a/makefiles/lint/python/include.mk b/makefiles/lint/python/include.mk
index 4c75e65..172f374 100644
--- a/makefiles/lint/python/include.mk
+++ b/makefiles/lint/python/include.mk
@@ -27,9 +27,9 @@
 ##-------------------##
 $(if $(UNSTABLE),$(eval lint-python-all := true))
 
-include $(ONF_MAKEDIR)/lint/python/find_utils.mk
-include $(ONF_MAKEDIR)/lint/python/flake8.mk
-include $(ONF_MAKEDIR)/lint/python/pylint.mk
+include $(onf-mk-dir)/lint/python/find_utils.mk
+include $(onf-mk-dir)/lint/python/flake8.mk
+include $(onf-mk-dir)/lint/python/pylint.mk
 
 $(if $(DEBUG),$(warning LEAVE))
 
diff --git a/makefiles/lint/robot/include.mk b/makefiles/lint/robot/include.mk
index f71652e..7167015 100644
--- a/makefiles/lint/robot/include.mk
+++ b/makefiles/lint/robot/include.mk
@@ -26,9 +26,9 @@
 ##--------------------##
 ##---]  INCLUDES  [---##
 ##--------------------##
-include $(ONF_MAKEDIR)/lint/robot/robot.mk
-# include $(ONF_MAKEDIR)/lint/robot/excl.mk
-include $(ONF_MAKEDIR)/lint/robot/help.mk
-include $(ONF_MAKEDIR)/lint/robot/install.mk
+include $(onf-mk-dir)/lint/robot/robot.mk
+# include $(onf-mk-dir)/lint/robot/excl.mk
+include $(onf-mk-dir)/lint/robot/help.mk
+include $(onf-mk-dir)/lint/robot/install.mk
 
 # [EOF]
diff --git a/makefiles/lint/shell/include.mk b/makefiles/lint/shell/include.mk
index 1398a36..2b73546 100644
--- a/makefiles/lint/shell/include.mk
+++ b/makefiles/lint/shell/include.mk
@@ -25,9 +25,9 @@
 ##--------------------##
 ##---]  INCLUDES  [---##
 ##--------------------##
-include $(ONF_MAKEDIR)/lint/shell/help.mk
-include $(ONF_MAKEDIR)/lint/shell/install.mk
-include $(ONF_MAKEDIR)/lint/shell/shellcheck.mk
+include $(onf-mk-dir)/lint/shell/help.mk
+include $(onf-mk-dir)/lint/shell/install.mk
+include $(onf-mk-dir)/lint/shell/shellcheck.mk
 
 $(if $(DEBUG),$(warning LEAVE))
 
diff --git a/makefiles/lint/yaml/byrepo/voltha-lib-go/include.mk b/makefiles/lint/yaml/byrepo/voltha-lib-go/include.mk
index 7f2ebfe..c930cdc 100644
--- a/makefiles/lint/yaml/byrepo/voltha-lib-go/include.mk
+++ b/makefiles/lint/yaml/byrepo/voltha-lib-go/include.mk
@@ -25,7 +25,7 @@
 ##--------------------##
 ##---]  INCLUDES  [---##
 ##--------------------##
-include $(ONF_MAKEDIR)/lint/yaml/byrepo/$(--repo-name--)/yamllint.mk
+include $(onf-mk-dir)/lint/yaml/byrepo/$(--repo-name--)/yamllint.mk
 
 $(if $(DEBUG),$(warning LEAVE))
 
diff --git a/makefiles/lint/yaml/byrepo/voltha-lib-go/yamllint.mk b/makefiles/lint/yaml/byrepo/voltha-lib-go/yamllint.mk
index fb56e3a..8143bfe 100644
--- a/makefiles/lint/yaml/byrepo/voltha-lib-go/yamllint.mk
+++ b/makefiles/lint/yaml/byrepo/voltha-lib-go/yamllint.mk
@@ -31,7 +31,7 @@
 ## Add requirement(s) for checking
 ## -------------------------------
 yamllint-cfg  := yamllint.helm
-yamllint-conf = $(wildcard $(yamllint-cfg) $(ONF_MAKEDIR)/lint/yaml/$(yamllint-cfg))
+yamllint-conf = $(wildcard $(yamllint-cfg) $(onf-mk-dir)/lint/yaml/$(yamllint-cfg))
 yamllint-args += $(addprefix --config-file$(space),$(yamllint-conf))
 yamllint-args += --strict
 
diff --git a/makefiles/lint/yaml/include.mk b/makefiles/lint/yaml/include.mk
index 7518d51..7191abe 100644
--- a/makefiles/lint/yaml/include.mk
+++ b/makefiles/lint/yaml/include.mk
@@ -27,16 +27,16 @@
 ##--------------------##
 ##---]  INCLUDES  [---##
 ##--------------------##
-include $(ONF_MAKEDIR)/lint/yaml/help.mk
-# include $(ONF_MAKEDIR)/lint/yaml/find_utils.mk
-include $(ONF_MAKEDIR)/lint/yaml/install.mk
+include $(onf-mk-dir)/lint/yaml/help.mk
+# include $(onf-mk-dir)/lint/yaml/find_utils.mk
+include $(onf-mk-dir)/lint/yaml/install.mk
 
 # [TODO] Consolidate and refactor to support a simpler answer
 # Special snowflake linting requirements
--include $(ONF_MAKEDIR)/lint/yaml/byrepo/$(--repo-name--)/include.mk
+-include $(onf-mk-dir)/lint/yaml/byrepo/$(--repo-name--)/include.mk
 
 # Standard lint-yaml targets
-include $(ONF_MAKEDIR)/lint/yaml/yamllint.mk
+include $(onf-mk-dir)/lint/yaml/yamllint.mk
 
 --onf-mk-lint-yaml-- := true#        # Flag to inhibit re-including