[Trilinos-Announce] Trilinos transition to modern CMake IMPORTED targets

[Bartlett, Roscoe A]

Hello Trilinos users and developers,

FYI: The updated version of the Trilinos CMake build system in:

   https://github.com/trilinos/Trilinos/pull/10614

was merged yesterday.  Today we see a few new nightly testing build errors on some machines reported and being worked in:

   https://github.com/trilinos/Trilinos/issues/10774

If you suspect there are problem caused from this upgrade of the CMake build system, please add a comment to:

   https://github.com/trilinos/Trilinos/issues/10774

and will go from there.

Cheers,

-Ross


Dr. Roscoe A. Bartlett, PhD
https://bartlettroscoe.github.io/
Sandia National Laboratories

From: Bartlett, Roscoe A
Sent: Monday, July 18, 2022 11:36 AM
To: trilinos-announce at trilinos.org; trilinos-developers at trilinos.org
Subject: RE: Trilinos transition to modern CMake IMPORTED targets

Hello Trilinos users and developers,

After a good bit of testing by Trilinos customers and resolving a few issues that came up, we are finally ready to merge this major upgrade to the Trilinos CMake build system in the PR:

   https://github.com/trilinos/Trilinos/pull/10614

I believe that all of the issues that were raised by customers have been resolved.  (See the list of testing and issues resolved in the Tasks section at the top of the GitHub PR.)

Please let me know if you have any lingering concerns ASAP.

-Ross


Dr. Roscoe A. Bartlett, PhD
https://bartlettroscoe.github.io/
Sandia National Laboratories

From: Bartlett, Roscoe A
Sent: Tuesday, June 14, 2022 2:35 PM
To: trilinos-announce at trilinos.org<mailto:trilinos-announce at trilinos.org>; trilinos-developers at trilinos.org<mailto:trilinos-developers at trilinos.org>
Subject: Trilinos transition to modern CMake IMPORTED targets

Hello Trilinos users and developers,

If your CMake project does not use find_package(Trilinos), please ignore this email.  Otherwise ...

FYI: A change to the Trilinos CMake build system transitioning to the usage of modern CMake targets is soon to be merged to the Trilinos 'develop' branch.  The Pull Request with this upgraded Trilinos CMake build system is:

   https://github.com/trilinos/Trilinos/pull/10614

This change breaks backward compatibility in a few ways that will break some existing downstream CMake projects that pull in Trilinos using find_package(Trilinos).   However, many existing customer CMake projects will not break and almost every existing configure script for Trilinos should continue to work with no changes in behavior (i.e., it will find the same compilers, MPI, and the same external packages/TPLs in the same way).   NOTE: It is not possible to move to clean modern CMake targets and keep prefect backward compatibility (but a lot of effort was expended to minimize breaks in backward compatibility and avoid confusing errors).

This is your opportunity to test out these Trilinos CMake changes in your project and provide feedback before they are merged into the Trilinos 'develop' branch.  If you want to test your downstream CMake project against these changes, please let me know ASAP.  Otherwise, we plan to merge these changes the beginning of next week.

The release notes summarizing these changes for Trilinos CMake customers are given in the "Trilinos 14.0" section in:

   https://github.com/bartlettroscoe/Trilinos/blob/tribits-299-modern-cmake-targets-1-again-2/RELEASE_NOTES

Detailed finer-grained changes to the TriBITS CMake build system that will impact CMake projects directly using TriBITS as well are described in all of the entries after 2021-06-17 listed in:

   https://github.com/TriBITSPub/TriBITS/blob/master/tribits/CHANGELOG.md

Tips on using the new modern CMake targets are given in:

   https://tribitspub.github.io/TriBITS/build_ref/index.html#using-the-installed-software-in-downstream-cmake-projects

If you have any questions or concerns, please let me know,

-Ross




Dr. Roscoe A. Bartlett, PhD
https://bartlettroscoe.github.io/
Sandia National Laboratories

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