Error: Cannot install in Homebrew on ARM processor in Intel default prefix (/usr/local)

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Prashanth Sams picture Prashanth Sams · Nov 23, 2020 · Viewed 33k times · Source

I use the latest Apple M1 chip processor. And I keep getting errors while application installation.

say.,

brew install openjdk@11

Error: Cannot install in Homebrew on ARM processor in Intel default prefix (/usr/local)!
Please create a new installation in /opt/homebrew using one of the
"Alternative Installs" from:
  https://docs.brew.sh/Installation
You can migrate your previously installed formula list with:
  brew bundle dump

Need help with exact steps to follow.

Answer

emonz picture emonz · Nov 25, 2020

For what it's worth, before installing Homebrew you will need to install Rosetta2 emulator for the new ARM silicon (M1 chip). I just installed Rosetta2 via terminal using:

/usr/sbin/softwareupdate --install-rosetta --agree-to-license

This will install rosetta2 with no extra button clicks.

After installing Rosetta2 above you can then use the Homebrew cmd and install Homebrew for ARM M1 chip: arch -x86_64 /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"

Once Homebrew for M1 ARM is installed use this Homebrew command to install packages: arch -x86_64 brew install <package>

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