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progrium / README.md
Last active April 7, 2024 21:42
Setting up M1 Macs for x86 development with Homebrew

Key Points

  • In general, binaries built just for x86 architecture will automatically be run in x86 mode
  • You can force apps in Rosetta 2 / x86 mode by right-clicking app, click Get Info, check "Open using Rosetta"
  • You can force command-line apps by prefixing with arch -x86_64, for example arch -x86_64 go
  • Running a shell in this mode means you don't have to prefix commands: arch -x86_64 zsh then go or whatever
  • Don't just immediately install Homebrew as usual. It should most likely be installed in x86 mode.

Homebrew

Not all toolchains and libraries properly support M1 arm64 chips just yet. Although