ninja: error: loading 'build.ninja': No such file or directory

[alwa-nordic]

If a pristine build fails during CMake configure, it leaves a build folder that breaks incremental building. The telltale log message is ninja: error: loading 'build.ninja': No such file or directory. This problem does not appear in vanilla non-Zephyr CMake.

To Reproduce Steps to reproduce the behavior:

• Start with the hello world sample.
• Make sure there is no build folder yet.
• Add some error to CMakeLists.txt. E.g. append this_is_not_defined().
• Run west build -b native_posix. (Selected board is irrelevant.)
• Observe CMake error.
• Fix error in CMakeLists.txt.
• Run west build for incremental build.
• Observe bug ninja: error: loading 'build.ninja': No such file or directory.

The workaround is to delete the build folder.

Impact User confusion, major annoyance.

[junaidaslamRS]

Looks like this is not fixed yet. I did a fresh clone of the mainline today, and it is still there...

[github-actions[bot]]

This issue has been marked as stale because it has been open (more than) 60 days with no activity. Remove the stale label or add a comment saying that you would like to have the label removed otherwise this issue will automatically be closed in 14 days. Note, that you can always re-open a closed issue at any time.

[theob-pro]

I am experiencing this issue too, is there some plan to investigate it?

[github-actions[bot]]

This issue has been marked as stale because it has been open (more than) 60 days with no activity. Remove the stale label or add a comment saying that you would like to have the label removed otherwise this issue will automatically be closed in 14 days. Note, that you can always re-open a closed issue at any time.