Incremental build is not working correctly with external builder

[ghentschke]

Describe the bug
Small changes in a source file should trigger an incremental build. Instead make performs a full build. See also this old CDT forum entry: https://www.eclipse.org/forums/index.php/t/1108303/

To Reproduce
Steps to reproduce the behavior:

1. Create a managed build project with an external make builder.

2. Show a projects resource in the Device Shell. E.g. right click on a projects folder Show In -> Device Shell

3. Try to rename the project. The rename should fail due to missing (write) access on the projects folder.
   

4. Make a small change in a source file.

5. Build the project.

6. A full build will be performed instead of only compiling the changed resource.

Expected behavior
The rename should not be performed when not all resources in a project can be accessed for writing.

Screenshots
A failed rename can lead to a not renamed refresh policy setting:

This can cause random behavior of the incremental build. See also this failure/solution description from 2015: https://mcuoneclipse.com/2015/06/06/eclipse-project-refresh-policy-broken-incremental-build-with-external-make/

Version Information (please complete the following information):

• OS and OS Version/extra details: Windows 11
• Eclipse Version from Help -> 2024-09
• CDT Version 11.x.x

[ghentschke]

Not sure, maybe the fix has to be done not in CDT. This has to be invetigated.

[ghentschke]

Maybe we can add a check prior to the incremental build that the resource in the refresh policy does not match the current project and give a warning to the user.