From: "Dmitry V. Levin" <ldv@altlinux.org>
To: ALT Linux Team development discussions <devel@lists.altlinux.org>
Subject: Re: [devel] Q: gcc/ld madness
Date: Sat, 22 Sep 2007 15:59:32 +0400
Message-ID: <20070922115932.GB27738@basalt.office.altlinux.org> (raw)
In-Reply-To: <20070922112156.GA5092@lks.home>
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On Sat, Sep 22, 2007 at 03:21:56PM +0400, Konstantin A. Lepikhov wrote:
> Saturday 22, at 02:29:48 PM you wrote:
> > * Konstantin A. Lepikhov <lakostis@> [070922 14:13]:
> > > echo 'int main(int argc, char **argv) { gzdopen(0, "rb"); return 0; }' | \
> > > gcc -Wall -include zlib.h -x c -o a.out -lz -
> > gcc -Wall -include zlib.h -x c -o a.out - -lz
> >
> > > PS Если уши растут из as-needed, просьба дать детальное и
> > > документированное объяснение почему эта ass ломает такие простые примеры.
> >
> > info ld:
> >
> > `--as-needed'
> > `--no-as-needed'
> > This option affects ELF DT_NEEDED tags for dynamic libraries
> > mentioned on the command line after the `--as-needed' option.
> > Normally, the linker will add a DT_NEEDED tag for each dynamic
> > library mentioned on the command line, regardless of whether the
> > library is actually needed. `--as-needed' causes DT_NEEDED tags
> > to only be emitted for libraries that satisfy some symbol
> > reference from regular objects which is undefined at the point
> > that the library was linked. `--no-as-needed' restores the
> > default behaviour.
> >
> > Собсно, в первом случае в момент линковки libz нет ссылок на
> > символы оттуда, во втором они появляются. Это уже неоднократно
> > здесь обсуждалось.
> придется вешать багу на сборочные скрипты из openwrt :(
Скажи им что у тебя libz.a ;)
--
ldv
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prev parent reply other threads:[~2007-09-22 11:59 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-22 10:07 Konstantin A. Lepikhov
2007-09-22 10:14 ` Andrey Rahmatullin
2007-09-22 10:31 ` Konstantin A. Lepikhov
2007-09-22 10:29 ` Alexey I. Froloff
2007-09-22 11:21 ` Konstantin A. Lepikhov
2007-09-22 11:43 ` Alexey I. Froloff
2007-09-22 11:59 ` Dmitry V. Levin [this message]
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