2017-04-18 22:12:35 +02:00
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# Build PowerShell on macOS
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2016-03-30 23:30:13 +02:00
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This guide supplements the [Linux instructions](./linux.md), as
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2016-08-26 21:08:50 +02:00
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building on macOS is almost identical.
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2016-03-30 23:30:13 +02:00
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2018-08-31 01:51:52 +02:00
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.NET Core 2.x (and by transitivity, us) only supports macOS 10.12+.
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2016-04-14 20:25:09 +02:00
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2017-04-18 22:12:35 +02:00
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## Environment
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2016-03-30 23:30:13 +02:00
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2019-01-24 21:50:11 +01:00
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You will want [Homebrew](https://brew.sh/), the missing package manager for macOS.
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2016-07-22 00:50:04 +02:00
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Once installed, follow the same instructions to download and
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2018-01-17 21:53:28 +01:00
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install a self-hosted copy of PowerShell on your macOS machine.
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From `pwsh.exe`, run `Import-Module ./build.psm1` and use `Start-PSBootstrap` to install the dependencies.
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2016-03-30 23:30:13 +02:00
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2016-04-14 01:21:23 +02:00
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The `Start-PSBootstrap` function does the following:
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2016-03-30 23:30:13 +02:00
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2016-04-14 01:21:23 +02:00
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- Uses `brew` to install CMake, OpenSSL, and GNU WGet
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2016-06-11 01:06:08 +02:00
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- Uninstalls any prior versions of .NET CLI
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2018-08-31 01:51:52 +02:00
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- Downloads and installs .NET Core SDK to `~/.dotnet`
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2016-04-14 01:41:50 +02:00
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2016-07-22 00:50:04 +02:00
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If you want to use `dotnet` outside of `Start-PSBuild`,
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add `~/.dotnet` to your `PATH` environment variable.
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2016-03-30 23:30:13 +02:00
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2017-04-18 22:12:35 +02:00
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### error: Too many open files
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2016-04-14 20:25:09 +02:00
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2016-07-22 00:50:04 +02:00
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Due to a [bug][809] in NuGet, the `dotnet restore` command will fail without the limit increased.
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Run `ulimit -n 2048` to fix this in your session;
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2017-04-18 22:12:35 +02:00
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add it to your shell's profile to fix it permanently.
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2016-04-14 20:25:09 +02:00
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2016-08-18 19:47:23 +02:00
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We cannot do this for you in the build module due to #[847][].
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2016-04-14 20:25:09 +02:00
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[809]: https://github.com/dotnet/cli/issues/809
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[847]: https://github.com/PowerShell/PowerShell/issues/847
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2017-04-18 22:12:35 +02:00
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## Build using our module
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2016-03-30 23:30:13 +02:00
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2017-11-01 23:55:46 +01:00
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Start a PowerShell session by running `pwsh`, and then use `Start-PSBuild` from the module.
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2016-07-22 00:50:04 +02:00
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2018-06-29 08:14:08 +02:00
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After building, PowerShell will be at `./src/powershell-unix/bin/Debug/netcoreapp2.1/osx-x64/publish/pwsh`.
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