Add make variable NOOPT to disable optimization flags

[petercolberg]

This is used by Debian to build an unoptimized variant for debugging.

[petercolberg]

Sorry for not being clear, WIP stands for work in progress…

[petercolberg]

Could you undo the merge?

[ViralBShah]

Of course. Didn't see that. I think I can only revert it for now. I have also sent you commit access so you could do it as well.

[ViralBShah]

It's a protected branch, it turns out. If you don't mind, we can revert, or do a new PR for the remaining things.

[petercolberg]

I noticed the protected branch. That is good practice anyway.

Then please leave it as is. The commit itself is good, I was just going to add more related commits to the pull request.

[nalimilan]

Are we sure this -O3 flag is really useful as a default? My understanding is that it's very rarely a good idea, and should only be applied when benchmarking shows a real improvement.

[nalimilan]

Also, @ViralBShah, could you add @petercolberg and @xyproto (for Arch) to the packagers team? I just discovered this allows CCing all team members by writing @JuliaLang/distro-packagers.

[ViralBShah]

I think -O2 should be good.

[ViralBShah]

Added to distro-packagers.