Linker script and alias to a versioned symbol

[Frédéric Pétrot]

Hello Vladimir,

    I believe what you are looking for is the VERSION command of the linker
    script.
    This is documented in section 3.9 of the manual.

    Hope this helps,
    Frédéric

Le 14/04/2023 à 02:57, Vladimir Mezentsev via Binutils a écrit :
>   Hi Experts,
> 
> Is it possible with compiler/linker options to change the default version of 
> clock_gettime (or GLIBC) in the test below.
> 
> Thank you,
> -Vladimir
> 
> On 2/10/23 10:35, amb via Binutils wrote:
>> Hi,
>>
>> I would like to know whether it is possible, in a linker script, to
>> define an alias to a versioned symbol.
>>
>> As an example, let me use these two versioned symbols in glibc:
>>
>>    XXXX: 00000000000XXXX   119 FUNC    GLOBAL DEFAULT   15
>> clock_gettime@GLIBC_2.2.5
>>    XXXX: 00000000000XXXX   119 FUNC    GLOBAL DEFAULT   15
>> clock_gettime@@GLIBC_2.17
>>
>> In a linker script, is it possible to make sure that a call to
>> clock_gettime ends up invoking clock_gettime@GLIBC_2.2.5 ?
>>
>> I am familiar with how `__asm__(".symver SYM,SYM@GLIBC_VERSION");`
>> works but that's not what I am looking for. I would like to know if
>> there is a way to achieve this goal using only a linker script and
>> nothing else.
>>
>> I tried something like this:
>>
>> PROVIDE( clock_gettime = clock_gettime@GLIBC_2.2.5 );
>>
>> But it doesn't seem to work. Maybe the '@' is an invalid char above?
>>
>> Thanks
> 

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