Revert "changed readlink to python"

This reverts commit 3ea9727.

Makefile

@@ -188,7 +188,7 @@ what:
 # Install Openlane
 .PHONY: openlane
 openlane:
-	@if [ "$(shell python3 -c "import os; print(os.path.abspath(\"$(OPENLANE_RUN_TAG)\"))")" = "$(shell python3 -c "import os; print(os.path.abspath(\"$(PWD)/openlane\"))")" ]; then\
+	@if [ "$$(readlink -f $${OPENLANE_ROOT})" = "$$(readlink -f $$(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; \
@@ -201,8 +201,8 @@ openlane:
 .PHONY: simlink
 simlink: check-caravel
 ### Symbolic links relative path to $CARAVEL_ROOT
-	$(eval MAKEFILE_PATH := $(shell readlink --relative-to=openlane $(CARAVEL_ROOT)/openlane/Makefile))
-	$(eval PIN_CFG_PATH  := $(shell readlink --relative-to=openlane/user_project_wrapper $(CARAVEL_ROOT)/openlane/user_project_wrapper_empty/pin_order.cfg))
+	$(eval MAKEFILE_PATH := $(shell readlink -f --relative-to=openlane $(CARAVEL_ROOT)/openlane/Makefile))
+	$(eval PIN_CFG_PATH  := $(shell readlink -f --relative-to=openlane/user_project_wrapper $(CARAVEL_ROOT)/openlane/user_project_wrapper_empty/pin_order.cfg))
 	mkdir -p openlane
 	mkdir -p openlane/user_project_wrapper
 	cd openlane &&\

openlane/Makefile

@@ -29,16 +29,16 @@ endif
 
 openlane_cmd = \
 	"flow.tcl \
-	-design $(shell python3 -c "import os; print(os.path.abspath(\"$(PWD)/openlane/$*\"))") \
-	-save_path $(shell python3 -c "import os; print(os.path.dirname(\"$(PWD)\"))") \
+	-design $$(readlink -f ./$*) \
+	-save_path $$(readlink -f ..) \
 	-save \
 	-tag $(OPENLANE_RUN_TAG) \
 	-overwrite \
 	-ignore_mismatches"
-openlane_cmd_interactive = "flow.tcl -it -file $(shell python3 -c "import os; print(os.path.abspath(\"$(PWD)/openlane/$*/interactive.tcl\"))")"
+openlane_cmd_interactive = "flow.tcl -it -file $$(readlink -f ./$*/interactive.tcl)"
 
 docker_mounts = \
-	-v $(shell python3 -c "import os; print(os.path.dirname(\"$(PWD)\"))"):$(shell python3 -c "import os; print(os.path.dirname(\"$(PWD)\"))") \
+	-v $$(readlink -f $(PWD)/..):$$(readlink -f $(PWD)/..) \
 	-v $(PDK_ROOT):$(PDK_ROOT) \
 	-v $(CARAVEL_ROOT):$(CARAVEL_ROOT) \
 	-v $(OPENLANE_ROOT):/openlane
@@ -75,7 +75,7 @@ else
 	# $(current_design)
 	mkdir -p ./$*/runs/$(OPENLANE_RUN_TAG) 
 	rm -rf ./$*/runs/$*
-	ln -s $(shell python3 -c "import os; print(os.path.dirname(\"$(PWD)/openlane/$*/runs/$(OPENLANE_RUN_TAG)\"))") ./$*/runs/$*
+	ln -s $$(readlink -f ./$*/runs/$(OPENLANE_RUN_TAG)) ./$*/runs/$*
 	$(docker_run) \
 		$(OPENLANE_IMAGE_NAME) sh -c $(openlane_cmd)
 endif