Bug 198850 – [CMake][Win] WTF_CopyHeaders copies files everytime in incremental builds if Visual Studio generator is used

• Status: RESOLVED
• Resolution: WORKSFORME
• Component: CMake

[Fujii Hironori]

[CMake][Win] WTF_CopyHeaders copies files everytime in incremental builds if Visual Studio generator is used

[Fujii Hironori]

I'm using CMake 3.14.
Ninja generator doesn't have this issue.

[Fujii Hironori]

This seems Visual Studio 2019 issue.

Visual Studio 2019 16.1: NG
Visual Studio 2017 15.7.6: OK

[Fujii Hironori]

It seems that this issue has been fixed. But, I can't find a entry in release notes.

Visual Studio 2019 16.1.3: OK

[Fujii Hironori]

My coworker is still having this issue even with Visual Studio 2019 16.1.3.

Hmm, it seems that this issue can't be reproducible on my PC now.
It is irrelevant to Visual Studio versions.

[Fujii Hironori]

VS 2019 16.1 rebuilds add_custom_command files every time (#19303) · Issues · CMake / CMake · GitLab
https://gitlab.kitware.com/cmake/cmake/issues/19303

This issue was fixed in CMake 3.14.5.
I'm using CMake 3.14.5 (My CMake was automatically upgraded by Chocolatey).

[Fujii Hironori]

https://blog.kitware.com/cmake-3-14-5-available-for-download/

> The Visual Studio 2019 16.1 update introduced a regression in MSBuild’s evaluation of custom command dependencies causing them to re-run on every build. CMake 3.14.5 includes a workaround,