CMakeLists.txt: Build the ArduinoCore-API implementations

[soburi]

• Build ArduinoCore-API files. These licenses were clarified with the introduction of west blobs.
• Fix the Rust API implementation build by referencing ArduinoCore-API in Rust builds.

[Copilot]

Pull request overview

This pull request introduces support for building ArduinoCore-API implementation files and adds infrastructure improvements for board variant handling. The main focus is enabling the build system to compile ArduinoCore-API source files when not using the Rust implementation, while maintaining compatibility with the Rust-based implementation path.

Changes:

• Added compilation of seven ArduinoCore-API C++ source files (CanMsg, CanMsgRingbuffer, Common, IPAddress, Print, Stream, String) for non-Rust builds
• Improved board variant directory resolution with double underscore normalization and support for board revision-specific overlay files
• Refined conditional compilation in cores/arduino to properly handle Rust vs C++ implementation paths

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 2 comments.

File	Description
CMakeLists.txt	Added ArduinoCore-API source files to build, improved variant directory lookup with normalization, and included ArduinoCore-API headers for both Rust and non-Rust paths
cores/arduino/CMakeLists.txt	Made zephyrPrint.cpp and apiCommon.cpp conditional on Rust implementation usage
cores/arduino/Arduino.h	Changed api/ArduinoAPI.h include from angle brackets to quotes and removed zephyrPrint.h include
samples/*/CMakeLists.txt (10 files)	Added support for board revision-specific overlay files with fallback to base overlay files

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

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[DhruvaG2000]

Doesn't build with this branch on my local setup either:

 $ west blobs --auto-accept fetch arduinocore-zephyr                                                                                                             [18:40:35]
Fetching blob arduinocore-zephyr: /home/dhruva/zephyrproject/modules/lib/ArduinoCore-Zephyr/zephyr/blobs/ArduinoCore-API/api/ArduinoAPI.h
Traceback (most recent call last):
  File "/home/dhruva/zephyrproject/.venv/bin/west", line 8, in <module>
    sys.exit(main())
  File "/home/dhruva/zephyrproject/.venv/lib/python3.10/site-packages/west/app/main.py", line 1176, in main
    app.run(argv or sys.argv[1:])
  File "/home/dhruva/zephyrproject/.venv/lib/python3.10/site-packages/west/app/main.py", line 255, in run
    self.run_command(argv, early_args)
  File "/home/dhruva/zephyrproject/.venv/lib/python3.10/site-packages/west/app/main.py", line 561, in run_command
    self.run_extension(args.command, argv)
  File "/home/dhruva/zephyrproject/.venv/lib/python3.10/site-packages/west/app/main.py", line 716, in run_extension
    self.cmd.run(args, unknown, self.topdir, manifest=self.manifest,
  File "/home/dhruva/zephyrproject/.venv/lib/python3.10/site-packages/west/commands.py", line 194, in run
    self.do_run(args, unknown)
  File "/home/dhruva/zephyrproject/zephyr/scripts/west_commands/blobs.py", line 346, in do_run
    subcmd(args)
  File "/home/dhruva/zephyrproject/zephyr/scripts/west_commands/blobs.py", line 291, in fetch
    if blob['click-through'] and not args.auto_accept:
KeyError: 'click-through'

Had to hack something locally to make it fetch:

diff --git a/scripts/west_commands/blobs.py b/scripts/west_commands/blobs.py
index 14f0412cda5f..d16bf0c55d55 100644
--- a/scripts/west_commands/blobs.py
+++ b/scripts/west_commands/blobs.py
@@ -288,7 +288,7 @@ class Blobs(WestCommand):
                 continue
             self.inf(f"Fetching blob {blob['module']}: {blob['abspath']}")

-            if blob['click-through'] and not args.auto_accept:
+            if blob.get('click-through', False) and not args.auto_accept:
                 while True:
                     user_input = input(
                         "For this blob, need to read and accept "

[DhruvaG2000]

ok so you're fixing that issue here: #154 ?

[soburi]

@DhruvaG2000

ok so you're fixing that issue here: #154 ?

yes. #154 solve this issue.