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Re: [PATCH] linux: Add soft-fp folder for arm with --without-fp
On 04/03/2020 21:55, Joseph Myers wrote:
> On Wed, 4 Mar 2020, Adhemerval Zanella wrote:
>
>> Currently --without-fp does not add the soft-fp folder before
>> the generic dbl-64 and flt-32 on arm-linux-gnueabi. This patch adds
>> the required Implies file (similar as powerpc, mips32, and
>> m68k-coldfire have done).
>
> There hasn't been a --without-fp configure option since commit
> 8df5d34720dd71e934545bade879e04697830757, so this commit message is
> clearly wrong.
Indeed, I clearly forgot about this patch and I was fooled by a lingering
comment in configure.ac.
>
> Based on disassembling a 2.27 binary (2.27 being the first release after
> the sysdeps/ieee754/soft-fp directory was added), the sysdeps ordering was
> working then, but I confirm it's broken now. Thus this raises the
> question of when the ordering broke, and thus (a) whether it might have
> broken for any other configurations using sysdeps/ieee754/soft-fp at the
> same time, and thus need fixing for them, (b) whether the breakage broke
> ordering for anything other than nofpu directories and (c) whether it
> might need a bug filed in Bugzilla if the issue was present in a release.
> The addition of /le sysdeps directories is one change that might have had
> a risk of breaking such ordering, but I don't know if it was that or not.
>
It was the LE/BE sysdeps patch, I will send a new version.