diff -r 000000000000 -r 6474c204b198 build/pymake/tests/doublecolon-exists.mk
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/build/pymake/tests/doublecolon-exists.mk	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,16 @@
+$(shell touch foo.testfile1 foo.testfile2)
+
+# when a rule has commands and no prerequisites, should it be executed?
+# double-colon: yes
+# single-colon: no
+
+all: foo.testfile1 foo.testfile2
+	test "$$(cat foo.testfile1)" = ""
+	test "$$(cat foo.testfile2)" = "remade:foo.testfile2"
+	@echo TEST-PASS
+
+foo.testfile1:
+	@echo TEST-FAIL
+
+foo.testfile2::
+	printf "remade:$@"> $@