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Re: [PATCH] scripts/recordmcount: improve EM_METAG define checks

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  Re: [PATCH] scripts/recordmcount: improve EM_METAG define checks Steven Rostedt <rostedt@goodmis.org> - 2016-07-26 23:30 +0200

#1450920 — Re: [PATCH] scripts/recordmcount: improve EM_METAG define checks

On Wed, 13 Jul 2016 14:37:46 +0100
Ross Burton <ross.burton@intel.com> wrote:

> Current glibc (as of c10f90, soon to be 2.24) has an elf.h which defines
> EM_METAG but doesn't also define R_METAG_ADDR32 and _NONE. This results in
> recordmcount not defining any of the META symbols, and the compile failing.
> 
> Handle this by checking each #define individually instead of assuming the
> presence.
> 
> Signed-off-by: Ross Burton <ross.burton@intel.com>

Actually, Laura beat you to it:

 http://lkml.kernel.org/r/1468005530-14757-1-git-send-email-labbott@redhat.com

I'll be applying her patch. I'll also mark it as stable, as it's come
up a few times on IRC as well.

I'll still add a Reported-by from you.

Thanks!

-- Steve

> ---
>  scripts/recordmcount.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c
> index e1675927..44ce050 100644
> --- a/scripts/recordmcount.c
> +++ b/scripts/recordmcount.c
> @@ -33,10 +33,14 @@
>  #include <string.h>
>  #include <unistd.h>
>  
> -#ifndef EM_METAG
>  /* Remove this when these make it to the standard system elf.h. */
> +#ifndef EM_METAG
>  #define EM_METAG      174
> +#endif
> +#ifndef R_METAG_ADDR32
>  #define R_METAG_ADDR32                   2
> +#endif
> +#ifndef R_METAG_NONE
>  #define R_METAG_NONE                     3
>  #endif
>  

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