Re: [PATCH] sim: use -Werror when probing for supported warning flags

[Mike Frysinger via Gdb-patches <gdb-patches@sourceware.org>]

On 21 Apr 2021 19:39, Simon Marchi via Gdb-patches wrote:
> On 2021-04-21 6:38 p.m., Mike Frysinger wrote:
> > do we have guidelines for how devs are supposed to do this ?  i've been
> > running the individual tools, but i want to make sure we aren't constantly
> > stepping on each other.
> 
> Yes, if we can document it or even have a script that does the right
> thing it would be nice.  This is one of those things that were never
> explained to me, how to re-generate those files, that's why I converged
> towards using autoreconf.  So far it worked well for the other projects
> in the tree (I don't get a different result than what is checked in).

i dislike autoreconf in this situation because it's too slow, and i have to
regen these files constantly (since i'm (re)writing them a lot).  i have a small
python script to do things in parallel.

$ time autoreconf -vf
real    1m43.379s
$ time ./regen.py
real    0m23.977s

that said, the problem was in my custom regen.py ;).  i hadn't fully updated it
after the introduction of the sim/m4/ dir.  once i adjust that, i see the same
behavior as you, so i've pushed that now.  thanks for pointing it out.
-mike