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41e3931b04
New APIs supported from macOS 11.0 cannot build successfully on macOS 10.15, even use @available to control whether a declaration is available on target platform, but does not work in conditionally compiling. Update building.md to require the macOS 11.0 SDK. Bug: dawn:1054 Change-Id: If22ada959c0c1ef41826f78bd337b912772000b1 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/61021 Reviewed-by: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Austin Eng <enga@chromium.org> Commit-Queue: Austin Eng <enga@chromium.org>
47 lines
1.4 KiB
Markdown
47 lines
1.4 KiB
Markdown
# Building Dawn
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## System requirements
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- Linux
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- The `pkg-config` command:
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```sh
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# Install pkg-config on Ubuntu
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sudo apt-get install pkg-config
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```
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- Mac
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- [Xcode](https://developer.apple.com/xcode/) 12.2+.
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- The macOS 11.0 SDK. Run `xcode-select` to check whether you have it.
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```sh
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ls `xcode-select -p`/Platforms/MacOSX.platform/Developer/SDKs
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```
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## Install `depot_tools`
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Dawn uses the Chromium build system and dependency management so you need to [install depot_tools] and add it to the PATH.
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[install depot_tools]: http://commondatastorage.googleapis.com/chrome-infra-docs/flat/depot_tools/docs/html/depot_tools_tutorial.html#_setting_up
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## Get the code
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```sh
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# Clone the repo as "dawn"
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git clone https://dawn.googlesource.com/dawn dawn && cd dawn
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# Bootstrap the gclient configuration
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cp scripts/standalone.gclient .gclient
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# Fetch external dependencies and toolchains with gclient
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gclient sync
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```
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## Build Dawn
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Then generate build files using `gn args out/Debug` or `gn args out/Release`.
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A text editor will appear asking build options, the most common option is `is_debug=true/false`; otherwise `gn args out/Release --list` shows all the possible options.
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On macOS you'll want to add the `use_system_xcode=true` in most cases. (and if you're a googler please get XCode from go/xcode).
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Then use `ninja -C out/Release` to build dawn and for example `./out/Release/dawn_end2end_tests` to run the tests.
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