[Bug target/83087] -fcf-protection -mcet enabled unconditionally for target libs

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83087

--- Comment #14 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Markus Trippelsdorf from comment #13)
> (In reply to Jakub Jelinek from comment #12)
> > 1.4% increase is not negligible if it is forced on all users without easy
> > option to disable it when they don't need/want it.
> 
> To be fair, it can be easily disabled with --disable-cet.
> The question is, if it should be enabled by default.

We want to enable Intel CET by default in GCC and glibc, which can be
disabled by --disable-cet.