Re: [Boost-build] Automatic version number or build-id

Subject: Re: [Boost-build] Automatic version number or build-id
From: Niklas Angare (li51ckf02_at_[hidden])
Date: 2015-09-25 18:22:18

"Vladimir Prus" <vladimir.prus_at_[hidden]> wrote:
> On 19-Sep-15 4:15 PM, Niklas Angare wrote:
>> I'm trying to get Boost.Build to generate a source file at build time 
>> containing an automatically generated version
>> number or build-id.
>
> actually, there are not good examples of this, and no full satisfactory 
> solution exists. I attach an somewhat
> passable example though.

Thanks for taking the time!

> With those caveats, if I touch 'hello.cpp' or 'hello2.cpp', then 
> 'build-id.cpp' is rebuilt too. If I rerun build
> without changing anything, nothing is rebuilt.

Your example doesn't work for me. build-id.obj gets rebuilt every time I 
change a source file, but build.id.cpp is not re-generated.

I've tried with both msvc and qcc toolsets. For the latter I had to replace 
$(>[3]) with $(>[2]) as you alluded to.

The result is the same even if I replace
notfile setup-build-id-rebuild : @setup-rebuild : hello build-id ;
with
notfile setup-build-id-rebuild : @setup-rebuild : hello build-id.cpp ;

I'm running boost-build-2014-10 in Windows. Result of b2 -v:
Boost.Jam  Version 2014.03. OS=NT.

Regards,

Niklas Angare