Windows Qt6 builds based on vcpkg

[m-kuhn]

Description

Refs qgis/QGIS-Enhancement-Proposals#292

This adds windows builds with Qt6, based on vcpkg dependencies.

The features WITH_BINDINGS, WITH_3D and WITH_GUI are supported and appropriately enable or disable building the required dependencies. Feature dependencies for server, opencl and quick are prepared but not yet wired.

Python support is consumed from https://github.com/open-vcpkg/python-registry/ . This is currently focused on shipping python dependencies that contain native code (dll's). Other dependencies can be installed using pip.

It is currently based on Qt 6.7.0.

Various Qt6 compatibility patches have been ported from #56980 and #56841 (QGIS code is now wchar / unicode aware for Qt6, external dependencies are patched to make them build).

TODO:

• Create an SDK to make local development easier
• Expand the developer documentation to make it easy to get started with local windows development
• Unvendor at least one "external" dependency into an overlay port, this will reduce build time and make it clear which version of external dependencies we want and what patches we added on top.
• Install psycopg2 (and other python dependencies that should be shipped)
• Check why some exes are installed in top level instead of bin

More ideas:

• Eventually use X_VCPKG_APPLOCAL_DEPS_INSTALL instead of blindly copying all .dll's, probably in a followup PR

[nyalldawson]

Nice work @m-kuhn !

Could you adapt the logic from https://github.com/qgis/QGIS/blob/master/.github/workflows/mingw64.yml#L97 to tag the artifact with the corresponding pr number and sha, and then update https://github.com/qgis/QGIS/blob/master/.github/workflows/build_artifact_comment.yml#L5 so that we get a PR comment with a direct link to download the qt6 artifacts?

[github-actions]

🪟 Windows builds ready!

Windows builds of this PR are available for testing here. Debug symbols for this build are available here.

(Built from commit ffedc33)

[github-actions]

The QGIS project highly values your contribution and would love to see this work merged! Unfortunately this PR has not had any activity in the last 14 days and is being automatically marked as "stale". If you think this pull request should be merged, please check

• that all unit tests are passing

• that all comments by reviewers have been addressed

• that there is enough information for reviewers, in particular

  • link to any issues which this pull request fixes

  • add a description of workflows which this pull request fixes

  • add screenshots if applicable

• that you have written unit tests where possible
  In case you should have any uncertainty, please leave a comment and we will be happy to help you proceed with this pull request.
  If there is no further activity on this pull request, it will be closed in a week.

[github-actions]

While we hate to see this happen, this PR has been automatically closed because it has not had any activity in the last 21 days. If this pull request should be reconsidered, please follow the guidelines in the previous comment and reopen this pull request. Or, if you have any further questions, just ask! We love to help, and if there's anything the QGIS project can do to help push this PR forward please let us know how we can assist.

[m-kuhn]

I will get back to this asap

[github-actions]

The QGIS project highly values your contribution and would love to see this work merged! Unfortunately this PR has not had any activity in the last 14 days and is being automatically marked as "stale". If you think this pull request should be merged, please check

• that all unit tests are passing

• that all comments by reviewers have been addressed

• that there is enough information for reviewers, in particular

  • link to any issues which this pull request fixes

  • add a description of workflows which this pull request fixes

  • add screenshots if applicable

• that you have written unit tests where possible
  In case you should have any uncertainty, please leave a comment and we will be happy to help you proceed with this pull request.
  If there is no further activity on this pull request, it will be closed in a week.

[github-actions]

While we hate to see this happen, this PR has been automatically closed because it has not had any activity in the last 21 days. If this pull request should be reconsidered, please follow the guidelines in the previous comment and reopen this pull request. Or, if you have any further questions, just ask! We love to help, and if there's anything the QGIS project can do to help push this PR forward please let us know how we can assist.