linux-kernel - Re: [PATCH] tools lib: Reinstate strlcpy() header guard with __UCLIBC_

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Message-ID: <20160819230210.GD20810@kernel.org>
Date:   Fri, 19 Aug 2016 20:02:10 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Vineet Gupta <Vineet.Gupta1@...opsys.com>
Cc:     Wang Nan <wangnan0@...wei.com>, David Ahern <dsahern@...il.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Petri Gynther <pgynther@...gle.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        "linux-snps-arc@...ts.infradead.org" 
        <linux-snps-arc@...ts.infradead.org>
Subject: Re: [PATCH] tools lib: Reinstate strlcpy() header guard with
 __UCLIBC__

Em Fri, Aug 19, 2016 at 06:42:07PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Fri, Aug 19, 2016 at 02:27:58PM -0700, Vineet Gupta escreveu:
> > On 08/19/2016 02:10 PM, Arnaldo Carvalho de Melo wrote:
> > >> But one question: when you test build, do you have any extra devel
> > >> > packages installed besides what is in this prebuilt toolchain tarball?
> > >> > 
> > >> > I'll add at least zlib and elfutils to the mix, building it in the
> > >> > docker image creation process, and then testing with/without
> > >> > NO_LIBELF=1, as I do to other cross-building images:
> > > Trying to build elfutils 0.166:
> > >
> > > checking whether gcc accepts -Wduplicated-cond... no
> > > checking whether gcc accepts -Wnull-dereference... no
> > > configure: WARNING: "libc does not have argp"
> > > checking for argp_parse in -largp... no
> > > configure: error: "no libargp found"
> > >
> > > ----
> > >
> > > will go errands now, will try to check what is needed to build elfutils
> > > with uclibc, ideas?
> > 
> > So back in 3.2 days I ran into these issues with elfutils - the workaround was to
> > use the standalone libelf
> > http://www.mr511.de/software/libelf-0.8.9.tar.gz.
> 
> Ok, so I'll git it a try with libelf, lets see...

Argh, give up, now it is refusing to build shared libraries:

  checking for native ELF system... no
  configure: warning: shared libraries not supported for arc-snps-linux-uclibc

And also it says ELF64 isn't support and thus GElf, some more details,
anyway.
  
> > Not sure if you will be willing to take that path.
> > 
> > OTOH, you could use standalone argp @ http://www.lysator.liu.se/~nisse/archive but
> > it seems that requires a bunch of patches too - from looking into the

> > corresponding buildroot package folder. Give this a shot - otherwise it is easier
> > to just build a custom toolchain with pre-req packages from buildroot. Or can be
> > provided if you so deem fit !

Please, if you do that, then I'll be able to test more stuff, I already
had enough fun trying to get elfutils, argp-standalone and libelf built
on this env :-\

- Arnaldo