[Bug lto/95604] LTO doesn't pick up -fcf-protection flag for the link step

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95604

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Matthias Klose from comment #2)
> Really? The documentation states:
> 
>   The macro "__CET__" is defined when -fcf-protection is used.
> 
> so it's a preprocessor option as well?

__CET__ check isn't needed to enable CET in C/C++.  __CET__ is needed to
add CET support to assembly codes.  If there are mixed source codes,
-fcf-protection should be used for compilation.