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I have set up Raspberry Pi with npm, nodejs, ganache-cli, eth-brownie (by downloading straight from github), and VS code.

I was able to do brownie command - it worked. I was able to do brownie init - it worked. I previously set up Brownie on my Mac and followed Patrick's video - and I was able to write my simple Smart Contract, compile it, deploy it and interact with it!

However, running brownie compile or brownie console the program starts executing and prints: Downloading from solc-bin.ethereum.org/linux-amd64/…

and then eventually hits:

Download binary would not execute, or returned unexpected output.

SolcInstallationError: Download binary would not execute, or returned unexpected output. If this issue persists, you can try to compile from source code using 'solcx.compile_solc('0.8.6')'
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    Please copy paste the errors and commands you're running and not use screenshots
    – Patrick Collins
    Commented Jul 2, 2021 at 17:08
  • Command that I am running: 'brownie compile'. Program starts executing and prints: 'Downloading from solc-bin.ethereum.org/linux-amd64/…' After the download it crashes with this error message: '"Download binary would not execute, or returned unexpected output. "' 'SolcInstallationError: Download binary would not execute, or returned unexpected output. If this issue persists, you can try to compile from source code using 'solcx.compile_solc('0.8.6')''
    – EMIL LOBACHEV
    Commented Jul 2, 2021 at 21:03
  • I'm not able to reproduce this issue, but have you seen these links? ethereum.stackexchange.com/questions/84125/… github.com/eth-brownie/brownie/issues/904 github.com/eth-brownie/brownie/issues/1086 Maybe they help?
    – Patrick Collins
    Commented Jul 2, 2021 at 22:25
  • basically from my understanding this error means that the binaries that are downloaded from solc-bin.ethereum.org do NOT work on Rasp Pi for some reason. And I have a question now: Can You help me with a way how to install (produce binaries form libraries) from source code EXACTLY? I saw the comments and the official soliditylang.org article, but there is no procedure on steps on how to Install Solc, build libraries and build binaries and put them somewhere. Can You help with this?
    – EMIL LOBACHEV
    Commented Jul 2, 2021 at 22:32
  • Maybe. If we don’t get an answer here I’ll see if I can bounty the question to get more eyes
    – Patrick Collins
    Commented Jul 2, 2021 at 22:33

2 Answers 2

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Downloading from solc-bin.ethereum.org/linux-amd64/…

Looking at the output, you can see that brownie is attempting to install the amd64 version of solc. The problem is that you are attempting to run an amd64 (The one prevalent on previous generation Macs and modern PCs) binary on an ARM machine (The ones on Raspberry Pis, M1 Macs, and other smaller devices). These are different processor architectures, and they are not always cross-compatible. I can't find any ARM builds online, but you can try building solidity from source using this guide from the docs (This however may not be feasible on a Raspberry Pi).

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If you want solc on Raspberry Pi, do the follow

sudo apt update
sudo apt install snapd

Then reboot Raspberry, and

sudo snap install core
sudo snap install solc

Reboot Again, and voila, done!

The solc version that will install is the 0.5.2

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