1 files changed, 37 insertions, 0 deletions
diff --git a/build/pymake/tests/override-propagate.mk b/build/pymake/tests/override-propagate.mk
new file mode 100644
index 000000000..a1663ff41
--- /dev/null
+++ b/build/pymake/tests/override-propagate.mk
@@ -0,0 +1,37 @@
+#T commandline: ['-w', 'OVAR=oval']
+
+OVAR=mval
+
+all: vartest run-override
+	$(MAKE) -f $(TESTPATH)/override-propagate.mk vartest
+	@echo TEST-PASS
+
+CLINE := OVAR=oval TESTPATH=$(TESTPATH) NATIVE_TESTPATH=$(NATIVE_TESTPATH)
+ifdef __WIN32__
+CLINE += __WIN32__=1
+endif
+
+SORTED_CLINE := $(subst \,\\,$(sort $(CLINE)))
+
+vartest:
+	@echo MAKELEVEL: '$(MAKELEVEL)'
+	test '$(value MAKEFLAGS)' = 'w -- $$(MAKEOVERRIDES)'
+	test '$(origin MAKEFLAGS)' = 'file'
+	test '$(value MAKEOVERRIDES)' = '$${-*-command-variables-*-}'
+	test "$(sort $(MAKEOVERRIDES))" = "$(SORTED_CLINE)"
+	test '$(origin MAKEOVERRIDES)' = 'environment'
+	test '$(origin -*-command-variables-*-)' = 'automatic'
+	test "$(origin OVAR)" = "command line"
+	test "$(OVAR)" = "oval"
+
+run-override: MAKEOVERRIDES=
+run-override:
+	test "$(OVAR)" = "oval"
+	$(MAKE) -f $(TESTPATH)/override-propagate.mk otest
+
+otest:
+	test '$(value MAKEFLAGS)' = 'w'
+	test '$(value MAKEOVERRIDES)' = '$${-*-command-variables-*-}'
+	test '$(MAKEOVERRIDES)' = ''
+	test '$(origin -*-command-variables-*-)' = 'undefined'
+	test "$(OVAR)" = "mval"