DietPi-Set_Hardware | I-Sabre-K2M: Fix module source build, add informational comments

[MichaIng]

Status: Testing

• Changelog
• ln -s /usr/bin/gcc-4.9 /usr/bin/gcc and ln -s /usr/bin/g++-4.9 /usr/bin/g++
  • The 4.9 packages do not place that symlink.
  • But those would override/fail if other gcc/g++ versions are installed, e.g. simply gcc/g++ packages from repo (via build-essential)...
  • At best we find a way to tell make to use the /usr/bin/gcc-4.9/g++-4.9 binaries
    EDIT: make CC=gcc-4.9 CXX=g++-4.9, but needs check if this is handed over to the sub make calls as well.
• Is g++ actually required? User reported success without g++ binary linked.
  • For my personal understanding: https://stackoverflow.com/questions/172587/what-is-the-difference-between-g-and-gcc#172592

Reference: https://github.com/Fourdee/DietPi/issues/2547

Commit list/description:

• DietPi-Set_Hardware | I-Sabre-K2M: Fix module source build, add informational comments
• DietPi-Set_Hardware | I-Sabre-K2M: "gcc-4.9" should be sufficient for build
• DietPi-Set_Hardware | I-Sabre-K2M: Add correct gcc binary to make commands

[MichaIng]

@Fourdee
Did you do manual edits compared to https://github.com/SatoruKawase/I-Sabre-K2M according to the README.md contained in your provided archive?
There have been quite some commits done from our version on: https://github.com/SatoruKawase/I-Sabre-K2M/commits/master

Otherwise use the GitHub archive directly instead of hosting it ourself?

---

Okay gcc should be sufficient and according to research, make CC=gcc-4,9 should apply this binary to all sub make calls. However some final test should be done.

Question about g++ forwarded: SatoruKawase/I-Sabre-K2M#3

[Fourdee]

@MichaIng

Did you do manual edits compared to https://github.com/SatoruKawase/I-Sabre-K2M according to the README.md contained in your provided archive?

No manual edits, used the source code provided by Audiophonics directly for the DAC.

[Fourdee]

@MichaIng

Thanks for fixing this 👍

Will merge and test.

[Fourdee]

🈯️ Works a charm, nice one @MichaIng 👍

[MichaIng]

@Fourdee

No manual edits, used the source code provided by Audiophonics directly for the DAC.

Okay, then we might want to update our source due to the commits that have been done in between.

🈯️ Works a charm, nice one @MichaIng 👍

Perfect, so it's proven that g++ is not required, gcc sufficient.