This should prevent a build issue caused by a potential conflicting zstd installation on M1 Mac. This was manifested in a linker error when building the GNU toolchain: ``` Undefined symbols for architecture arm64: [gcc/build] "_ZSTD_compress", referenced from: ```
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Setting up a development environment on macOS
Prerequisites
This installation guide assumes that you have Homebrew and Xcode installed. You need to open Xcode at least once for it to install the required tools.
Before you build, you must set your command line tools to Xcode's tools instead of the ones installed via Homebrew:
sudo xcode-select --switch /Applications/Xcode.app
Make sure you also have all the following dependencies installed:
# core
brew install coreutils e2fsprogs qemu bash gcc@11 imagemagick ninja cmake ccache rsync zstd
# (option 1) fuse + ext2
brew install m4 autoconf automake libtool
brew install --cask macfuse
Toolchain/BuildFuseExt2.sh
# (option 2) genext2fs
brew install genext2fs
If you're building on M1 Mac and have Homebrew installed in both Rosetta and native environments, you have to make sure that required packages are installed only in one of the environments. Otherwise, these installations can conflict during the build process, which is manifested in hard to diagnose issues. Building on M1 natively without Rosetta is recommended, as the build process should be faster without Rosetta overhead.
Notes:
- Installing macfuse for the first time requires enabling its system extension in System Preferences and then restarting your machine. The output from installing macfuse with brew says this, but it's easy to miss.