Re: [PATCH] gcc-plugins: simplify GCC plugin-dev capability test

[Linus Torvalds]

On Fri, Dec 18, 2020 at 7:33 AM Jon Hunter <jonathanh@xxxxxxxxxx> wrote:
>
> However, if you are saying that this is a problem/bug with our builders,
> then of course we will have to get this fixed.

This seems to be a package dependency problem with the gcc plugins -
they clearly want libgmp, but apparently the package hasn't specified
that dependency.

If this turns out to be a big problem, I guess we can't simplify the
plugin check after all.

We historically just disabled gcc-plugins if that header didn't build,
which obviously meant that it "worked" for people, but it also means
that clearly the coverage can't have been as good as it could/should
be.

So if it's as simple as just installing the GNU multiprecision
libraries ("gmp-devel" on most rpm-based systems, "libgmp-dev" on most
debian systems), then I think that's the right thing to do. You'll get
a working build again, and equally importantly, your build servers
will actually do a better job of covering the different build options.

                     Linus