Istanbul-tools安装错误：github.com/ethereum/go-ethereum/crypto/bn256/cloudflare.gfpMul：重定位目标runtime.support_bmi2未定义

Question

I am trying to install Istanbul-tools to run an IBFT ethereum network as shown in this tutorial here https://medium.com/getamis/istanbul-bft-ibft-c2758b7fe6ff

I am installing istanbul-tools via their makefile using

go build -v -o ./build/bin/istanbul ./cmd/istanbul

After fixing some initial issues, as the code base hasn't been updated in a year, I then received the following error:

github.com/ethereum/go-ethereum/crypto/bn256/cloudflare.gfpMul: relocation target runtime.support_bmi2 not defined

I also cannot find the Cloudflare file in any location in the go-ethereum folder. Can someone point me in the right direction? Cheers!

Answer 1

I had this exact issue, the issue has to do with your Ethereum/Istanbul Versions. You either need to make sure everything is upgraded all the way, or downgrade Go. I downgraded my go version to 1.10.3 and it worked.

Can you be provide more details on the specific Cloudflare file you are looking for? There is a folder for Cloudflare within crypto/bn256 (full path is go-ethereum(or project name)/crypto/bn256/cloudflare) in the Main Ethereum project, I would check there for Istanbul.