From: "Konstantin A. Lepikhov" <lakostis@altlinux.org>
To: ALT Linux Team development discussions <devel@lists.altlinux.org>
Subject: Re: [devel] Q: gcc/ld madness
Date: Sat, 22 Sep 2007 15:21:56 +0400
Message-ID: <20070922112156.GA5092@lks.home> (raw)
In-Reply-To: <20070922102948.GA31033@hell.fortress>
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Hi Alexey!
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 :(
--
WBR et al.
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next prev parent reply other threads:[~2007-09-22 11:21 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 [this message]
2007-09-22 11:43 ` Alexey I. Froloff
2007-09-22 11:59 ` Dmitry V. Levin
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