On Sat, Aug 18, 2012 at 10:40 AM, Mike Frysinger <vap...@gentoo.org> wrote: > On Saturday 18 August 2012 13:32:59 Mike Stump wrote: >> On Aug 18, 2012, at 6:52 AM, "H.J. Lu" <hjl.to...@gmail.com> wrote: >> > In case of x32, the only difference between x32 and x86-64 is >> > the default output of CC. What do you recommend how to >> > detect x32? >> >> So, is there a cpp symbol that is defined for code-gen? If so, something >> like >> >> If [ $(gcc -x c /dev/null -dM -E | grep x32) = x32 ]; then fi >> >> Would do it. > > how is executing `gcc` any better than $CC_FOR_BUILD ? > > your code suggestion here is pretty much what H.J. Lu is already doing. > -mike
There are 12 existing set_cc_for_build usages in config.guess. I don't think it is reasonable to require x32 not to use it without providing an alternative. If you want to remove set_cc_for_build, one extra usage doesn't make it much harder to do. -- H.J.
