Re: [ECOS] errno bug

[Gary Thomas <gary at mlbassoc dot com>]

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Paluch Sebastian wrote:
> Dnia Sat, 01 Mar 2008 17:00:03 +0100, Gary Thomas <gary@mlbassoc.com> 
> napisał:
>
> > Paluch Sebastian wrote:
> > > Hi, I get folowing error while trying to use stdio.h
> > >  In file included from 
> > > D:/SAM7/ecos/system_small_install/include/cyg/libc/stdio/s
> > > tdio.inl:66,
> > >                  from 
> > > D:/SAM7/ecos/system_small_install/include/cyg/libc/stdio/s
> > > tdio.h:330,
> > >                  from 
> > > D:/SAM7/ecos/system_small_install/include/stdio.h:81,
> > >                  from src/main.c:22:
> > > D:/SAM7/ecos/system_small_install/include/errno.h:71:34: 
> > > cyg/error/(*cyg_error_g
> > > et_errno_p()).h: No such file or directory
> > > make: *** [bin/main.o] Error 1
> >
> > How did you configure eCos?
> It was standard configuration. I have found that including 
> <cyg/error/errno.h> first and than <stdio.h> is causing problem.

a. there's no such thing as a "standard" eCos configuration.  Do you
   mean the default (template)?  or what?
b. if you want to include stdio and friends, don't include the eCos
   internal file (<cyg/error/errno.h>).  If the code needs that file,
   it will include it automatically.

> A macro definition of errno in <cyg/error/errno.h> file
>
> #ifdef CYGSEM_ERROR_PER_THREAD_ERRNO
> # define errno (*cyg_error_get_errno_p())  /* Per-thread error status */
> #else
> extern Cyg_ErrNo errno;                /* Global error status */
> #endif /* ifdef CYGSEM_ERROR_PER_THREAD_ERRNO */
>
> is inserted in a file name which needs to be included in <errno.h>
>
> #if CYGINT_ISO_ERRNO
> # include CYGBLD_ISO_ERRNO_HEADER
> #endif
>
> the CYGBLD_ISO_ERRNO_HEADER is <cyg/error/errno.h>. So errno is replaced 
> by (*cyg_error_get_errno_p()).


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