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Re: findutils on interix

From: James Youngman
Subject: Re: findutils on interix
Date: Thu, 26 May 2011 00:48:09 +0100

On Wed, May 25, 2011 at 10:21 AM, Markus Duft <address@hidden> wrote:
> On 10/28/10 14:43, Markus Duft wrote:
> [snip]
>>> another solution that came to my mind: i'm maintaining a library, who's 
>>> sole purpose is to fix the incorrect behaviour of libc in some regards on 
>>> interix (libsuacomp [1]). it does some "bad" things already ( ;p ), so 
>>> maybe i could override the sysconf() function (it already overrides approx 
>>> 70 functions...), and make it return a sane value in the _SC_ARG_MAX case. 
>>> that would make the whole problem disappear, and even the first (pushed) 
>>> patch unnecessary.
>> i implemented this, thus findutils can continue like before :) so the 
>> previous (already pushed) patch is no longer necessary (sorry for consuming 
>> your time...). actually, the patch is now harmfull, as _SC_ARG_MAX is now 
>> the only source of "good" information... :[
> Hi!
> Sorry for reviving such an old thread... :)
> i never got an answer on the last mail, and i just saw, that there is still 
> some quirks going on in my findutils-4.5.9 ebuild regarding this issue.
> Since i fixed sysconf() for interix through [1], it'd be neccessary to revert 
> [2] in the findutils git repo. Is that ok for you? Doing so will require 
> libsuacomp when building findutils. nothing has to be done on the findutils 
> side though, as suacomp installs itself as libc.{a,so}, and thus gets in 
> automatically.
> [1] 
> https://sourceforge.net/p/suacomp/git/ci/624ac7406b484e60395cac3096121314a3c72efb/
> [2] 
> http://git.savannah.gnu.org/cgit/findutils.git/commit/?id=107af5aa0cd8cb6551e12c3ed0c21066f0fbd19f
> Thanks,
> markus
>> i will still keep an eye on it on my interix boxes whether this works in all 
>> situations.
>> this is IMHO the best solution, as it takes the responsibility from 
>> findutils to work around existing OS bugs, when there is a library, doing 
>> this exact thing. there is not even a need to make findutils know 
>> libsuacomp, as suacomp installs a libc.so and libc.a linker scripts into 
>> it's prefix. as soon as this path is in the linker path, it works (and in 
>> gentoo prefix on interix i have linker and compiler wrappers assuring this).
>> sorry, that i didn't have that idea earlier, would have saved some work for 
>> all of us.
>> are you ok with this solution?
>> markus
>>> what do you think?
>>> [1] http://sf.net/projects/suacomp

I'm very happy to make further changes.

But I'm a little reluctant to make things worse for folks who use
Interix but not suacomp.     Two options that spring immediately to

1. effectively disable the workaround for when suacomp ia available on
Interix, but keep the workaround on Interic when suacomp isn't
2. modify the configure script to refuse to build findutils at all on
Interix unless suacomp is installed [i.e. "make things worse"].

I have a strong preference for (1).


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