A Makefile

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+.PHONY: help
+help: # Show help for each of the Makefile recipes.
+	@grep -E '^[a-zA-Z0-9 -]+:.*#'  Makefile | sort | while read -r l; do printf "\033[1;32m$$(echo $$l | cut -f 1 -d':')\033[00m:$$(echo $$l | cut -f 2- -d'#')\n"; done
+
+.PHONY: prepare-circuit
+prepare-circuit: clear-circuit-artifacts # Build the circuit artifacts
+	@cd circuit && \
+		npm install && \
+		circom grayscale_step.circom --r1cs --wasm
+
+.PHONY: clear-circuit-artifacts
+clear-circuit-artifacts: # Clear the circuit artifacts
+	@rm -rf circuit/grayscale_step_js circuit/grayscale_step.r1cs