How can a library.properties-file cause an error no such file or directory?

Projects Programming
16

There is some technical information on this subject in the Arduino Library Specification:
https://arduino.github.io/arduino-cli/dev/library-specification/#source-code

This diagram made the situation more clear in my mind:

image

So you can see that there are two requirements for a library to be treated as having a "recursive layout":

  • Presence of the library.properties metadata file ("1.5 format" library)
  • Presence of the src subfolder.

If both of those conditions exist then the source files are searched for under the src subfolder of the library. Take either of the two away, and the root of the library folder is instead searched.

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