Setting up MacOS for CS 2810

Install Homebrew

Homebrew is a command line tool for MacOS for installing open source software. If you do not already have it, install it here:

• https://brew.sh/

Install LLVM with RISC-V cross-compiler support

Now install the llvm suite of tools with these two commands:

brew install lld llvm
brew link --force llvm

Troubleshooting

If clang runs when you type make on an assignment but always fails to build assembly files, you may have missed a step when you installed Homebrew: it prints out some instructions that are easy to miss:

• MacOS already has an old version of clang preinstalled
• The brew commands above install a newer, more complete version
• The system may still be finding the old version

If this is happening, try running this command (this is what Homebrew told you to run but you may have missed):

echo 'eval $(/opt/homebrew/bin/brew shellenv)' >> $HOME/.zprofile

Then close your terminal/shell window and re-open it and try running make again.