building head -r338675 with devel/amd64-gcc: /usr/local/x86_64-unknown-freebsd12.0/bin/ld: warning: -z ifunc-noplt ignored

[Warner Losh]

On Fri, Sep 21, 2018 at 9:34 PM Warner Losh <imp at bsdimp.com> wrote:

>
>
> On Fri, Sep 21, 2018 at 9:30 PM Rebecca Cran <rebecca at bluestop.org> wrote:
>
>> On 9/21/18 9:09 PM, Warner Losh wrote:
>>
>> > On Fri, Sep 21, 2018 at 9:02 PM Rebecca Cran via freebsd-toolchain <
>> > freebsd-toolchain at freebsd.org> wrote:
>> >
>> >> On 9/21/18 4:06 PM, Mark Johnston wrote:
>> >>> https://reviews.freebsd.org/D17279 for anyone else that would like to
>> >>> review.
>> >>
>> >> Is that possibly related to the error I'm getting trying to build
>> >> -CURRENT on 11.2?
>> >>
>> >>
>> >> make[4]: "/usr/home/bcran/workspace/freebsd/lib/libc/Makefile" line 26:
>> >> amd64 libc requires linker ifunc support
>> >>
>> > Yea, that should absolutely work. If it doesn't, that's a big big
>> problem.
>>
>>
>> I see, it was introduced earlier today in lib/libc/Makefile:
>>
>>
>> commit ef8030831eccec4e481a1766fc1c67f7cadadac9
>> Author: emaste <emaste at FreeBSD.org>
>> Date:   Fri Sep 21 17:49:37 2018 +0000
>>
>>     libc: require ifunc-capable linker for amd64/i386
>>
>>     We expect to introduce optimized libc routines in the near future,
>>     which requires use of a linker that supports ifuncs.
>>
>>     Approved by:    re (gjb, kib)
>>     Sponsored by:   The FreeBSD Foundation
>>
>>
>> And /usr/bin/ld -v on my 11.2 system says:
>>
>>
>> GNU ld 2.17.50 [FreeBSD] 2007-07-03
>>
>
> What does ld.lld say?
>
> However, it shouldn't matter: we don't build libc until *AFTER* we build
> ld.lld, so this error is bogusly triggering. I suspect that it needs to be
> limited to only building targets, since tree traversal ones, as well as
> install targets don't have this dependency.
>

I meant to add, can you give a few lines before the error is spewed here in
email? My IRC computer died before I could see any answers there...

My 11.2-stable system has 6.0.1, so I can't test from there.

Warner