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-rw-r--r--rules/other/Toplevel.make3
1 files changed, 3 insertions, 0 deletions
diff --git a/rules/other/Toplevel.make b/rules/other/Toplevel.make
index 3e4500d27..0a9a1724f 100644
--- a/rules/other/Toplevel.make
+++ b/rules/other/Toplevel.make
@@ -96,5 +96,8 @@ endif
print-%:
@echo "$($(*))"
+exists-%:
+ @[ "$(origin $(*))" != "undefined" ]
+
# vim600:set foldmethod=marker:
# vim600:set syntax=make: