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

[Rebecca Cran]

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


-- 
Rebecca