assert OPENLANE_ROOT ne to cup/openlane
diff --git a/Makefile b/Makefile
index 6f8e5b8..ba36e31 100644
--- a/Makefile
+++ b/Makefile
@@ -140,6 +140,11 @@
# Install Openlane
.PHONY: openlane
openlane:
+ @if [ "$$(realpath $${OPENLANE_ROOT})" = "$$(realpath $$(pwd)/openlane)" ]; then\
+ echo "OPENLANE_ROOT is set to '$$(pwd)/openlane' which contains openlane config files"; \
+ echo "Please set it to a different directory"; \
+ exit 1; \
+ fi
cd openlane && $(MAKE) openlane
#### Not sure if the targets following are of any use
