[User-mode-linux-devel] Re: Problems compiling 2.4.0test2 patch...

[Jeff D. <jd...@ka...>]

sa...@sk... said:
> FYI, for some reason, I can't compile 2.4.0 out of the box (the UM
> patch that is...).  It seems that you are doing a bunch of #ifdef
> __SMP__'s, but __SMP__ is not defined... 

I just did a build of the patch applied to a clean 2.4.0-test2 pool, and it 
built fine.  Something's wrong at your end.

> I added -D__SMP__ to my command line and things seem quite a bit
> happier now.  :) 

I have SMP support turned off for now, with pretty good reason.

> --- arch/um/kernel/process_kern.c-  Mon Jul  3 05:05:03 2000 
> +++ arch/um/kernel/process_kern.c       Mon Jul  3 10:34:23 2000 
> @@ -228,7 +228,9 @@
>         if (softirq_state[0].active&softirq_state[0].mask)
>                 do_softirq();
>  #else 
> -#error Need to update do_bh 
> +/* 
> + * #error Need to update do_bh 
> + */
>  #endif
>  } 

This being one of them.

> In spite of making these changes I'm still getting this error:
> VFS: Mounted root (ext2 filesystem) readonly. 
> Warning: unable to open an initial console. 
> Seg fault in signals 

Which is another reason I have SMP turned off.  

If you want to get it to build, get a clean pool, and it will probably work.  
If it doesn't, send in the compile errors.  Don't fix non-existent problems.

If you want to get SMP support working, let me know, and I'll be happy to 
supply hints.  There is more to SMP support than removing #errors and putting 
in kludges to make it build.

				Jeff