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Date: Mon, 8 Sep 2008 11:43:38 +0400
From: "Konstantin A. Lepikhov" <lakostis@unsafe.ru>
To: ALT Linux kernel packages development <devel-kernel@lists.altlinux.org>
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Subject: Re: [d-kernel] =?koi8-r?b?88LP0svBIM3PxNXM0SBkcmJk?=
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Hi Eugene!

Monday 08, at 11:03:59 AM you wrote:

> Совсем дурацкая проблема - не могу собрать бенчмарки (хотя нужно ли их
> собирать?):
> 
> cc -pthread -lm -o io-latency-test io-latency-test.c
> /tmp/.private/enp/cc6mXiyl.o: In function `main':
> io-latency-test.c:(.text+0x93d): undefined reference to `sqrt'
> collect2: выполнение ld завершилось с кодом возврата 1
> make: *** [io-latency-test] Ошибка 1
--as-needed ;) Библиотеки должны идти после объектных файлов.

> 
> в этом же самом окружении:
> 
> $ cat test.c
> #include <math.h>
> #include <stdio.h>
> 
> int main()
> {
>         printf("%f\n",sqrt(2));
>         return 0;
> }
> 
> $ cc -pthread -lm -o test test.c
> $ ./test
> 1.414214
> $ ldd test
>         linux-gate.so.1 =>  (0xffffe000)
>         libc.so.6 => /lib/libc.so.6 (0xb7e69000)
>         /lib/ld-linux.so.2 (0x80000000)
> 
> 

-- 
WBR et al.