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dawn-cmake/docs/building.md
Corentin Wallez 429a12542f docs: Mention to add use_system_xcode=true 
Also fix the name of the docs/building.md file.

Bug:

Change-Id: I342adcbc1427c533d2248d23d53f169d4a4a54cd
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/34466
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Auto-Submit: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Stephen White <senorblanco@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
2020-12-02 15:59:49 +00:00

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Building Dawn

Dawn uses the Chromium build system and dependency management so you need to install depot_tools and add it to the PATH.

On Linux you need to have the pkg-config command:

# Install pkg-config on Ubuntu
sudo apt-get install pkg-config

Then get the source as follows:

# Clone the repo as "dawn"
git clone https://dawn.googlesource.com/dawn dawn && cd dawn

# Bootstrap the gclient configuration
cp scripts/standalone.gclient .gclient

# Fetch external dependencies and toolchains with gclient
gclient sync

Then generate build files using gn args out/Debug or gn args out/Release. 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.

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).

Then use ninja -C out/Release to build dawn and for example ./out/Release/dawn_end2end_tests to run the tests.