PowerShell/docs/building/macos.md

Build PowerShell on macOS

This guide supplements the Linux instructions, as building on macOS is almost identical.

.NET Core 2.0 (and by transitivity, us) only supports macOS 10.12.

Environment

You will want Homebrew, the missing package manager for macOS. Once installed, follow the same instructions to download and install a self-hosted copy of PowerShell on your macOS machine, and useStart-PSBootstrap to install the dependencies.

The Start-PSBootstrap function does the following:

• Uses brew to install CMake, OpenSSL, and GNU WGet
• Uninstalls any prior versions of .NET CLI
• Downloads and installs a preview version of .NET Core SDK 2.0 to ~/.dotnet

If you want to use dotnet outside of Start-PSBuild, add ~/.dotnet to your PATH environment variable.

error: Too many open files

Due to a bug in NuGet, the dotnet restore command will fail without the limit increased. Run ulimit -n 2048 to fix this in your session; add it to your shell's profile to fix it permanently.

We cannot do this for you in the build module due to #847.

Build using our module

Instead of installing the Ubuntu package of PowerShell, download the pkg from our GitHub releases page using your browser, complete the wizard, start a powershell session, and use Start-PSBuild from the module.

After building, PowerShell will be at ./src/powershell-unix/bin/Linux/netcoreapp2.0/osx.10.12-x64/publish/powershell. Note that configuration is still Linux because it would be silly to make yet another separate configuration when it's used solely to work-around a CLI issue.