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

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Date:   Fri, 19 Aug 2016 14:27:58 -0700
From:   Vineet Gupta <Vineet.Gupta1@...opsys.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
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__

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.

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 !

-Vineet