separate out the build commands in a specific makefile

Makefile

+build: unicorn minigeth_mips minigeth_default_arch mipsevm contracts
+	yarn
+
+unicorn:
+	./build_unicorn.sh
+
+minigeth_mips:
+	(cd mipigo && ./build.sh)
+
+minigeth_default_arch:
+	(cd minigeth && go build)
+
+mipsevm:
+	(cd mipsevm && go build)
+
+contracts:
+	yarn
+	npx hardhat compile
+
+clean:
+	rm minigeth/go-ethereum
+	rm mipigo/minigeth
+	rm mipigo/minigeth.bin
+	rm mipsevm/mipsevm
+	rm -rf artifacts
+
+mrproper: clean
+	rm -rf cache
+	rm -rf node_modules
+	rm -rf mipigo/venv
+
+.PHONY: build unicorn minigeth_mips minigeth_default_arch mipsevm contracts \
+	clean mrproper

README.md

@@ -26,27 +26,24 @@ mipsevm -- A MIPS runtime in the EVM (works with contracts)
 contracts -- A Merkleized MIPS processor on chain + the challenge logic
 ```
 
-## Usage
-
-The following commands should be run from the root directory unless otherwise specified:
+## Building
 
 ```
-./build_unicorn.sh
+make build
+```
 
-# build minigeth for MIPS
-(cd mipigo && ./build.sh)
+## Usage
 
-# build minigeth for PC
-(cd minigeth/ && go build)
+The following commands should be run from the root directory unless otherwise specified:
 
+```
 # compute the transition from 13284469 -> 13284470 on PC
 TRANSITION_BLOCK=13284469
 mkdir -p /tmp/cannon
 minigeth/go-ethereum $TRANSITION_BLOCK
 
 # write out the golden MIPS minigeth start state
-yarn
-(cd mipsevm && ./evm.sh)
+mipsevm/mipsevm
 
 # if you run into "digital envelope routines::unsupported", rerun after this:
 # export NODE_OPTIONS=--openssl-legacy-provider

mipigo/build.sh

@@ -3,10 +3,9 @@ cd ../minigeth
 export GOOS=linux
 export GOARCH=mips
 export GOMIPS=softfloat
-go build
-cd ../mipigo
+go build -o ../mipigo/minigeth
 
-cp ../minigeth/go-ethereum minigeth
+cd ../mipigo
 file minigeth
 
 if [[ ! -d venv ]]; then

mipsevm/evm.sh

-#!/bin/bash -e
-(cd ../ && npx hardhat compile > /dev/null)
-go build && (cd .. && ./mipsevm/mipsevm $@)