Fix swiftshader link errors

It seems like the sdk_version partially controls which
libc++ is used during compilation. This can cause issues
with mismatching versions when some tarets specify the
version and others do not.

Bug: b/138239233
Bug: b/142276229
Test: built locally
Change-Id: Ia727a3b3e1454e485c8a9c03c7e0eebc2d29727e
Merged-In: Ibc6708ae0322b0cf658f7da4b76bc8a01cbb2f8f
2 files changed
tree: 6f036533c0771dcfb9ed8b75c97ed8c461b45ebf
  1. .dir-locals.el
  2. .gitignore
  3. .travis.yml
  4. .vscode/
  5. AUTHORS.txt
  6. Android.bp
  8. CMakeLists.txt
  9. CMakeSettings.json
  12. LICENSE.txt
  13. OWNERS
  16. README.version
  17. SwiftShader.sln
  19. build/
  20. build_overrides/
  21. docs/
  22. extensions/
  23. include/
  24. src/
  25. tests/
  26. third_party/


License Build Status Build status


SwiftShader is a high-performance CPU-based implementation of the Vulkan, OpenGL ES, and Direct3D 9 graphics APIs12. Its goal is to provide hardware independence for advanced 3D graphics.


SwiftShader libraries can be built for Windows, Linux, and Mac OS X.
Android and Chrome (OS) build environments are also supported.

  • Visual Studio
    On Windows, open the SwiftShader.sln file using Visual Studio Community or compatible version, and build the solution. Output DLLs will be placed in the out subfolder. Sample executables such as OGLES3ColourGrading can be found under the Tests solution folder and can be run from the IDE.

  • CMake

    Install CMake for Linux, Mac OS X, or Windows and use either the IDE or run the following terminal commands:

    cd build
    cmake ..
    make --jobs=8


The SwiftShader libraries act as drop-in replacements for graphics drivers.

On Windows, most applications can be made to use SwiftShader's DLLs by placing them in the same folder as the executable. On Linux, the LD_LIBRARY_PATH environment variable or -rpath linker option can be used to direct applications to search for shared libraries in the indicated directory first.


See CONTRIBUTING.txt for important contributing requirements.

The canonical repository for SwiftShader is hosted at:

All changes must be reviewed and approved in the Gerrit review tool at:

Authenticate your account here:

All changes require a Change-ID tag in the commit message. A commit hook may be used to add this tag automatically, and can be found at: To clone the repository and install the commit hook in one go:

git clone && (cd SwiftShader && curl -Lo `git rev-parse --git-dir`/hooks/commit-msg ; chmod +x `git rev-parse --git-dir`/hooks/commit-msg)

Changes are uploaded to Gerrit by executing:

git push origin HEAD:refs/for/master


SwiftShader's OpenGL ES implementation can be tested using the dEQP test suite.

See docs/ for details.

Third-Party Dependencies

The third_party directory contains projects which originated outside of SwiftShader:

subzero contains a fork of the Subzero project. It is part of Google Chrome‘s (Portable) Native Client project. Its authoritative source is at The fork was made using git-subtree to include all of Subzero’s history, and until further notice it should not diverge from the upstream project. Contributions must be tested using the README instructions, reviewed at, and then pulled into the SwiftShader repository.

llvm-subzero contains a minimized set of LLVM dependencies of the Subzero project.

PowerVR_SDK contains a subset of the PowerVR Graphics Native SDK for running several sample applications.

googletest contains the Google Test project, as a Git submodule. It is used for running unit tests for Chromium, and Reactor unit tests. Run git submodule update --init to obtain/update the code. Any contributions should be made upstream.


See docs/


Public mailing list:

General bug tracker:
Chrome specific bugs:


The SwiftShader project is licensed under the Apache License Version 2.0. You can find a copy of it in LICENSE.txt.

Files in the third_party folder are subject to their respective license.

Authors and Contributors

The legal authors for copyright purposes are listed in AUTHORS.txt.

CONTRIBUTORS.txt contains a list of names of individuals who have contributed to SwiftShader. If you‘re not on the list, but you’ve signed the Google CLA and have contributed more than a formatting change, feel free to request to be added.


  1. Trademarks are the property of their respective owners.
  2. We do not claim official conformance with the Direct3D and OpenGL graphics APIs at this moment.
  3. This is not an official Google product.