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33 lines
2.1 KiB
Markdown
33 lines
2.1 KiB
Markdown
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# The ANGLE vcpkg port
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The ANGLE port's buildsystem is based off of [WebKit's approach](https://github.com/WebKit/WebKit/tree/main/Source/ThirdParty/ANGLE) to converting ANGLE's buildsystem to CMake.
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Details:
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- `cmake-buildsystem/CMakeLists.txt`
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- This is an augmented version of WebKit's [CMakeLists.txt](https://github.com/WebKit/WebKit/blob/main/Source/ThirdParty/ANGLE/CMakeLists.txt), with vcpkg edits and additions.
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- `cmake-buildsystem/*.cmake`
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- These are configuration files based on [WebKit's approach](https://github.com/WebKit/WebKit/tree/main/Source/ThirdParty/ANGLE), but customized for vcpkg (and using `PlatformLinux` instead of `PlatformGTK`)
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## Updating the ANGLE vcpkg port
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1. Select a new ANGLE version
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Recommendation: Follow the recommendations in the libANGLE "[Choosing an ANGLE branch](https://github.com/google/angle/blob/master/doc/ChoosingANGLEBranch.md#matching-a-chromium-release-to-an-angle-branch)" guide, and find the branch that matches the current Chromium Stable.
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2. [Find the branch](https://github.com/google/angle/branches) (usually `chromium/<version>`) and latest commit on that branch, and update the following variables in `portfile.cmake`:
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- `ANGLE_COMMIT`
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- `ANGLE_VERSION`
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- `ANGLE_SHA512`
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3. Check the `DEPS` file at that ANGLE commit, for the commit used in `'third_party/zlib'`, and update `ANGLE_THIRDPARTY_ZLIB_COMMIT` in `portfile.cmake` if necessary.
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4. Attempt to build. You may have to tweak the `CMakeLists.txt`, `Platform*.cmake` files, etc. Check with the latest files in [WebKit's repo](https://github.com/WebKit/WebKit/tree/main/Source/ThirdParty/ANGLE) to see if any updates need to be ported to the vcpkg's custom files. You might also need to change the `ANGLE_WEBKIT_BUILDSYSTEM_COMMIT` in the portfile (although this should theoretically need updating less frequently).
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5. Check headers against `opengl-registry` - make sure headers are similar.
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> angle defines some additional entrypoints.
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> opengl-registry should be latest before updating angle
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6. Complete all the other normal steps in the [Maintainer Guide](/docs/maintainers/maintainer-guide.md)
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