Re: [Xenomai-core] Undefined reference to Posix shm_* with uClibc

[Jan Kiszka <jan.kiszka@domain.hid>]

Hagen.Langbartels@domain.hid wrote:
> Hi all,
> 
> I tried to compile Xenomai 2.5rc4 with uClibc 0.9.30.1 and ran into some 
> problems with references to the 
> posix functions shm_open and shm_unlink in /src/skins/posix/wrappers.c, 
> which do not exist in uClibc.
> 
> Unlinke in  /src/skins/posix/shm.c the existence of these functions is not 
> verfied (via #ifdef HAVE_SHM_*)
> and the build fails.
> 
> The following patch is a quick and dirty fix for this problem. I hope this 
> might be helpful.
> 

Actually, it looks clean to me. Can you provide it with the formal
signed-off, proper title and short description (as recent commits look
like in Xenomai)?

Jan

> 
> diff -Nur xenomai-2.4.93.orig/src/skins/posix/wrappers.c 
> xenomai-2.4.93.work/src/skins/posix/wrappers.c
> --- xenomai-2.4.93.orig/src/skins/posix/wrappers.c      2009-03-30 
> 12:24:50.000000000 +0200
> +++ xenomai-2.4.93.work/src/skins/posix/wrappers.c      2009-12-07 
> 14:22:03.983876500 +0100
> @@ -245,17 +245,21 @@
>  }
>  
>  /* shm */
> +#ifdef HAVE_SHM_OPEN
>  __attribute__ ((weak))
>  int __real_shm_open(const char *name, int oflag, mode_t mode)
>  {
>         return shm_open(name, oflag, mode);
>  }
> +#endif
>  
> +#ifdef HAVE_SHM_UNLINK
>  __attribute__ ((weak))
>  int __real_shm_unlink(const char *name)
>  {
>         return shm_unlink(name);
>  }
> +#endif
>  
>  __attribute__ ((weak))
>  int __real_ftruncate(int fildes, long length)
> 
> 
> 
> 
> Best regards,
> Hagen Langbartels
> 
> SIEB & MEYER AG
> Dipl.-Inf. (FH) Hagen Langbartels
> 
> Auf dem Schmaarkamp 21
> 21339 Lüneburg
> Germany
> Tel.: +49-4131-203-1133
> Fax.: +49-4131-38562
> E-mail: development@domain.hid
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> 
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> 
> 

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