[Bug driver/108328] gcc --help -v doesn't work correctly in some circumstances in gcc>=10

[sagimor6 at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108328

--- Comment #6 from Sagi Mor <sagimor6 at gmail dot com> ---
Well, this is only for aarch64 and arc, and they do compile the kernel in
buildroot, so it seems to work? (never checked myself)
By the way, they solve the -Wl,z,relro for kernel/uboot compilation by checking
if -D__KERNEL__ or -D__UBOOT__ was specified and then not adding the link flag,
which is an eye-opener for me.