Getting Started

[graylan]

Output of brew config

HOMEBREW_VERSION: 3.3.7-38-g6295b08
ORIGIN: https://github.com/Homebrew/brew
HEAD: 6295b082a970c5036185b6f997632f009225519b
Last commit: 3 years, 8 months ago
Core tap ORIGIN: https://github.com/Homebrew/homebrew-core
Core tap HEAD: 511eebd221e2b82860c756345fab61f0b3b895ec
Core tap last commit: 3 years, 8 months ago
Core tap branch: master
HOMEBREW_PREFIX: /usr/local
HOMEBREW_REPOSITORY: /usr/local/Homebrew
HOMEBREW_CELLAR: /usr/local/Cellar
HOMEBREW_CASK_OPTS: []
HOMEBREW_CORE_GIT_REMOTE: https://github.com/Homebrew/homebrew-core
HOMEBREW_MAKE_JOBS: 10
Homebrew Ruby: 2.6.10 => /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby
CPU: 10-core 64-bit dunno
Clang: 17.0.0 build 1700
Git: 2.39.5 => /Library/Developer/CommandLineTools/usr/bin/git
Curl: 8.7.1 => /usr/bin/curl
macOS: 15.6-arm64
CLT: 16.4.0.0.1.1747106510
Xcode: 13.1 => /Users/Shared/Previously Relocated Items/Security/Developer/Applications/Xcode.app/Contents/Developer
Rosetta 2: false

Output of brew doctor

Please note that these warnings are just used to help the Homebrew maintainers
with debugging if you file an issue. If everything you use Homebrew for is
working fine: please don't worry or file an issue; just ignore this. Thanks!

Warning: Unbrewed dylibs were found in /usr/local/lib.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected dylibs:
  /usr/local/lib/libSoapySDR.0.7.0.dylib
  /usr/local/lib/libliquid.dylib
  /usr/local/lib/librtlsdr.0.6.0.dylib

Warning: Unbrewed header files were found in /usr/local/include.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected header files:
  /usr/local/include/SoapySDR/Config.h
  /usr/local/include/SoapySDR/Constants.h
  /usr/local/include/SoapySDR/Device.h
  /usr/local/include/SoapySDR/Errors.h
  /usr/local/include/SoapySDR/Formats.h
  /usr/local/include/SoapySDR/Logger.h
  /usr/local/include/SoapySDR/Modules.h
  /usr/local/include/SoapySDR/Time.h
  /usr/local/include/SoapySDR/Types.h
  /usr/local/include/SoapySDR/Version.h
  /usr/local/include/liquid/liquid.h
  /usr/local/include/rtl-sdr.h
  /usr/local/include/rtl-sdr_export.h

Warning: Unbrewed '.pc' files were found in /usr/local/lib/pkgconfig.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected '.pc' files:
  /usr/local/lib/pkgconfig/SoapySDR.pc
  /usr/local/lib/pkgconfig/librtlsdr.pc

Warning: Unbrewed static libraries were found in /usr/local/lib.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected static libraries:
  /usr/local/lib/libliquid.a
  /usr/local/lib/librtlsdr.a

Warning: You are using macOS 15.
We do not provide support for this pre-release version.
You will encounter build failures with some formulae.
Please create pull requests instead of asking for help on Homebrew's GitHub,
Twitter or any other official channels. You are responsible for resolving
any issues you experience while you are running this
pre-release version.


Warning: Your Homebrew's prefix is not /opt/homebrew.
Some of Homebrew's bottles (binary packages) can only be used with the default
prefix (/opt/homebrew).
You will encounter build failures with some formulae.
Please create pull requests instead of asking for help on Homebrew's GitHub,
Twitter or any other official channels. You are responsible for resolving
any issues you experience while you are running this
unsupported configuration.


Warning: Ruby version 2.6.10 is unsupported on macOS 15. Homebrew
is developed and tested on Ruby 2.6.8, and may not work correctly
on other Rubies. Patches are accepted as long as they don't cause breakage
on supported Rubies.

Warning: /usr/bin occurs before /usr/local/bin in your PATH.
This means that system-provided programs will be used instead of those
provided by Homebrew. Consider setting your PATH so that
/usr/local/bin occurs before /usr/bin. Here is a one-liner:
  echo 'export PATH="/usr/local/bin:$PATH"' >> /Users/graylan/.bash_profile

The following tools exist at both paths:
  git-receive-pack
  python3
  pip3
  git-upload-archive
  git-shell
  git-upload-pack

Warning: Homebrew's "sbin" was not found in your PATH but you have installed
formulae that put executables in /usr/local/sbin.
Consider setting your PATH for example like so:
  echo 'export PATH="/usr/local/sbin:$PATH"' >> /Users/graylan/.bash_profile

Warning: Xcode is installed to a directory with a space in the name.
This will cause some formulae to fail to build.

Warning: The directory Xcode is reportedly installed to doesn't exist:
  /Users/Shared/Previously Relocated Items/Security/Developer/Applications/Xcode.app/Contents/Developer
You may need to `xcode-select` the proper path if you have moved Xcode.

Description of issue

I migrated from an ancient Intel Mac to a new M4 Mac. I know just enough about Bash to be dangerous to myself. When trying to brew install a new package, I get the error below.

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

However, if I run eval "$(/opt/homebrew/bin/brew shellenv)" beforehand, things work properly until I close the window. I had tried deleting the original install and creating a new install, but I must not have done it correctly. I suspect the error is in my PATH variable (see below)?

$ more .bash_profile
export PATH="/usr/local/opt/gettext/bin:$PATH"

$ more .bashrc
eval "$(/opt/homebrew/bin/brew shellenv)"
export PATH=/opt/homebrew/bin:$PATH

What should the export PATH be in .bash_profile and/or .bashrc? Or is the issue altogether different? Thank you for helping me understand.

[daeho-ro]

If you have installed gettext from homebrew, then

-export PATH="/usr/local/opt/gettext/bin:$PATH"
+export PATH="/opt/homebrew/opt/gettext/bin:$PATH"

[gromgit]

Following on from @daeho-ro's comment:-

$ more .bashrc

Are you in your home directory when you run this? It's always safer to more ~/.bashrc, just in case you're in a different directory (and are therefore looking at something that won't be sourced by bash on startup).

eval "$(/opt/homebrew/bin/brew shellenv)"

This is sufficient.

export PATH=/opt/homebrew/bin:$PATH

This is unnecessary, as PATH is set properly by the previous line, along with some other Homebrew environment variables.