Re: [Qemu-devel] [PATCH 4/7] compiler: add macro for GCC weak symbols

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Peter Maydell <peter.maydell@xxxxxxxxxx> writes:

> On 27 July 2012 14:37, Anthony Liguori <aliguori@xxxxxxxxxx> wrote:
>> --- a/compiler.h
>> +++ b/compiler.h
>> @@ -45,6 +45,7 @@
>>  #  define GCC_ATTR __attribute__((__unused__, format(gnu_printf, 1, 2)))
>>  #  define GCC_FMT_ATTR(n, m) __attribute__((format(gnu_printf, n, m)))
>>  # endif
>> +#define GCC_WEAK __attribute__((weak))
>>  #else
>>  #define GCC_ATTR /**/
>>  #define GCC_FMT_ATTR(n, m)
>
> The GCC manual says "Weak symbols are supported for ELF targets,
> and also for a.out targets when using the GNU assembler and linker".
> Have you tested this on Windows and MacOSX ?
>
> (Also, no version of the macro in the not-GCC branch of the #if.)

(We don't support any compiler other than GCC).

Not really sure why it is even in a branch.

Regards,

Anthony Liguori

>
> -- PMM

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