[cmake] Set DAWN_ENABLE_PIC explicitly to ON by default

The CMake configure output reports:

  -- Dawn build PIC: OFF

by default, even though all targets are compiled with -fPIC.

Specifying -DDAWN_ENABLE_PIC=ON or -DDAWN_ENABLE_PIC=OFF has currently no effect on the build.

This PR removes the unconditional set(CMAKE_POSITION_INDEPENDENT_CODE ON) and
switches DAWN_ENABLE_PIC to ON by default.
So this does not change the default behavior but allows the user to toggle DAWN_ENABLE_PIC.

This is an imported pull request from
https://github.com/google/dawn/pull/64

GITHUB_PR_HEAD_SHA=2158366c3cee7eab0feb69086592a53abf3db4c7
ORIGINAL_AUTHOR=Dominique Belhachemi <db@domibel.de>
GitOrigin-RevId: cec3cc9be45b9f83aa048cd7b3fe3c16034754d3
Change-Id: I3f7db5e21d697c9866eac0e529d62d8705c08292
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/302535
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Commit-Queue: Kai Ninomiya <kainino@chromium.org>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
1 file changed
tree: 41c9864d5c46f41b9c59a185e8d2048a45a01736
  1. .github/
  2. .vscode/
  3. agents/
  4. build_overrides/
  5. docs/
  6. generator/
  7. include/
  8. infra/
  9. scripts/
  10. src/
  11. test/
  12. third_party/
  13. tools/
  14. webgpu-cts/
  15. .bazelrc
  16. .clang-format
  17. .clang-format-ignore
  18. .clang-tidy
  19. .git-blame-ignore-revs
  20. .gitattributes
  21. .gitignore
  22. .gitmodules
  23. .gn
  24. .style.yapf
  25. .vpython3
  26. AUTHORS
  27. BUILD.bazel
  28. BUILD.gn
  29. CMakeLists.txt
  30. CMakeSettings.json
  31. CODE_OF_CONDUCT.md
  32. codereview.settings
  33. CONTRIBUTING.md
  34. CPPLINT.cfg
  35. DEPS
  36. DIR_METADATA
  37. go.mod
  38. go.sum
  39. go_presubmit_support.py
  40. LICENSE
  41. OWNERS
  42. PRESUBMIT.py
  43. README.chromium
  44. README.md
  45. unsafe_buffers_paths.txt
  46. WATCHLISTS
  47. WORKSPACE.bazel
README.md

Build Status Matrix Space

Dawn, a WebGPU implementation

Dawn is an open-source and cross-platform implementation of the WebGPU standard. More precisely it implements webgpu.h that is a one-to-one mapping with the WebGPU IDL. Dawn is meant to be integrated as part of a larger system and is the underlying implementation of WebGPU in Chromium.

Dawn provides several WebGPU building blocks:

  • WebGPU C/C++ headers that applications and other building blocks use.
    • The webgpu.h version that Dawn implements.
    • A C++ wrapper for the webgpu.h.
  • A “native” implementation of WebGPU using platforms' GPU APIs: D3D12, Metal, Vulkan and OpenGL. See per API support for more details.
  • A client-server implementation of WebGPU for applications that are in a sandbox without access to native drivers
  • Tint is a compiler for the WebGPU Shader Language (WGSL) that can be used in standalone to convert shaders from and to WGSL.

Helpful links:

Documentation table of content

Developer documentation:

User documentation: (TODO, figure out what overlaps with the webgpu.h docs)

License

BSD 3-Clause License, please see LICENSE.

Disclaimer

This is not an officially supported Google product.