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53 lines
1.7 KiB
Markdown
53 lines
1.7 KiB
Markdown
# GN Frequently Asked Questions
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[TOC]
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## Where is the GN documentation?
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GN has extensive built-in help, so you can run `gn help`, but you can
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also see all of the help on [the reference page](reference.md). See
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also the [quick start](quick_start.md) guide and the [language and
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operation details](language.md).
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## Can I generate XCode or Visual Studio projects?
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You can generate skeleton (or wrapper) projects for Xcode, Visual Studio,
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QTCreator, and Eclipse that will list the files and targets in the
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build, but use Ninja to do the actual build. You cannot generate "real"
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projects that look like native ones like GYP could.
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Run `gn help gen` for more details.
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## How do I generate common build variants?
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In GN, args go with a build directory rather than being global in the
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environment. To edit the args for your `out/Default` build directory:
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```
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gn args out/Default
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```
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You can set variables in that file:
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* The default is a debug build. To do a release build add
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`is_debug = false`
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* The default is a static build. To do a component build add
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`is_component_build = true`
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* The default is a developer build. To do an official build, set
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`is_official_build = true`
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* The default is Chromium branding. To do Chrome branding, set
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`is_chrome_branded = true`
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## How do I do cross-compiles?
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GN has robust support for doing cross compiles and building things for
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multiple architectures in a single build.
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See [GNCrossCompiles](cross_compiles.md) for more info.
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## Can I control what targets are built by default?
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Yes! If you create a group target called "default" in the top-level (root)
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build file, i.e., "//:default", GN will tell Ninja to build that by
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default, rather than building everything.
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