-v should print also the revision number in repo

[U.Mutlu]

U.Mutlu wrote on 06/13/2018 10:26 PM:
> Andrew Pinski wrote on 06/13/2018 10:06 PM:
>> On Wednesday, June 13, 2018, U.Mutlu <um@mutluit.com <mailto:um@mutluit.com>>
>> wrote:
>>
>>     Hi,
>>
>>     currently -v (ie. gcc -v) prints these data:
>>
>>     gcc version 9.0.0 20180613 (experimental) (GCC)
>>
>>     It would be nice, when building from a repository that then the resulting
>>     target should contain also the revision number (for example "r261543")
>>     of the underlying repository, so that gcc -v then prints this info as well.
>>
>>     Maybe the respective revision nbr of the repository used (svn, git, ...),
>>     or perhaps better: a new generic solution with a unique & common rev-nbr
>>     for all repos (and non-repos): a new file with rev-info in the repo-root
>>     could do the trick, IMO...
>>
>>
>> If you use contrib/gcc_update, it will place the right thing in the needed
>> file and will display the revision.
>
> Ah, cool! Will try it out, thx.

Ok, it worked like a charm:

gcc version 9.0.0 20180613 (experimental) [trunk revision 261570] (GCC)