[Bug target/84148] CET shouldn't be enabled in 32-bit run-time libraries by default

[igor.v.tsimbalist at intel dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84148

--- Comment #12 from igor.v.tsimbalist at intel dot com ---
(In reply to H.J. Lu from comment #10)
> (In reply to igor.v.tsimbalist from comment #9)
> > How can I check the fixes w/o old HW? I tried specifying --target=pentium to
> > configure but the build has failed with the message
> > 
> > *** Configuration i586-pc-none not supported
> > make[1]: *** [configure-gcc] Error 1
> > make[1]: Leaving directory `/export/users/itsimbal/gcc_ws/build.cet'
> > make: *** [all] Error 2
> 
> To specify the default -march= for 32-bit target libraries, for 32-bit
> GCC, use --with-arch=cpu, for 64-bit GCC, use --with-arch_32=cpu to
> configure GCC.

Thanks! This works as expected. New patch is attached.