Archives files should not be embedded in archives

[d-a-v]

Bug Report

Current behavior

In some case, library archives generated thanks to dot_a_linkage=true are put into objs.a,
resulting in an archive file embedded into another archive file.

Example in ESP8266Audio CI:

• 1st .a generated by dot_a_linkage=true (log in CI)
• 2nd .a generated by arduino-builder (because of a too large number of generated files ?) (log in CI)
  ar cru p/libraries/ESP8266HTTPClient/objs.a p/libraries/ESP8266HTTPClient/ESP8266HTTPClient.a
• final error in CI

probable source: #961

Expected behavior

Any of the two, or both ?

• refuse to add .a archive files in AR command line.
• skip dot_a_linkage=true libraries ?

Environment

• CLI version (output of arduino-cli version):

arduino-builder shipped with arduino-ide-hourly-build

• OS and platform:

ubuntu / any

[cmaglie]

Should be fixed by #1140, @d-a-v may you test with the latest nightly?

[d-a-v]

Is Arduino-IDE-nightly including arduino-builder/cli nightly ?

[per1234]

@d-a-v no. You can see the version of arduino-builder used in the nightly Arduino CLI build here:
https://github.com/arduino/Arduino/blob/master/build/build.xml#L102

  <property name="ARDUINO-BUILDER-VERSION" value="1.5.5" />

and the version of Arduino CLI used in that version of arduino-builder (confusing because they didn't push a 1.5.5 tag) here:
https://github.com/arduino/arduino-builder/blob/f959e8b154e695eaa3bfaac18f0310a854e228b8/go.mod#L7

	github.com/arduino/arduino-cli v0.0.0-20201210103408-bf7a3194bb63

[cmaglie]

The CLI nightly is here: https://arduino.github.io/arduino-cli/latest/installation/#nightly-builds

As @per1234 said the Arduino IDE nightly does not get the CLI updates automatically, we have to manually update it.
@d-a-v if you need the patch in the Arduino IDE nightly I can push it quickly.

[d-a-v]

@per1234 @cmaglie Thanks !
Yes, that would allow @earlephilhower to try the fix in CI as described in OP.

[cmaglie]

Yes, that would allow @earlephilhower to try the fix in CI as described in OP.

Ok, the nightly of the Arduino IDE has been updated.

[earlephilhower]

Thank you!

I can confirm the nightly build works successfully with the library that was seeing the issue before.

[cmaglie]

Thanks for the test!

Closing as fixed...