oberon_backend_chacha_poly_aead.h: No such file or directory error when upgrading from SDK 16.0.0 to SDK 17.1.0 in Segger Embedded Studio

[pault0522]

It is properly pointed to in the emProject file, and the SES IDE is able to locate and open it in file explorer.

I upgraded the liboberon to 3.0.8:

When I previously encountered file not found errors it was because my emProject paths were wrong but for this one they seem to be fine. 

[Jørgen Holmefjord]

Hi,

It you can find the files in the given paths, and have verified that the project is located in the correct level relative to the files, this could be caused by a too long path.

If you have placed the project/SDK in a long path, this may cause Keil to not be able to detect the files. If this is the case, please try to move the full SDK closer to the root of the harddrive.

Best regards,
Jørgen

[pault0522]

This was the issue, thank you. Moving the project directory directly into C: allowed me to build.

Is there a defined max path length?

[Jørgen Holmefjord]

According to this article, "Windows systems impose a 260 character limit on file paths."