Geometry Boost List: Re: [geometry] Fixing unused variable/typdef warnings

Subject: Re: [geometry] Fixing unused variable/typdef warnings
From: Adam Wulkiewicz (adam.wulkiewicz_at_[hidden])
Date: 2014-06-03 06:45:11

2014-06-03 12:35 GMT+02:00 Adam Wulkiewicz <adam.wulkiewicz_at_[hidden]>:

> Hi,
>
>
> 2014-06-03 7:53 GMT+02:00 Menelaos Karavelas <menelaos.karavelas_at_[hidden]
> >:
>
>  Hi Adam.
>>
>>
>> On 03/06/2014 01:15 πμ, Adam Wulkiewicz wrote:
>>
>>   Hi,
>>
>>  For those of you which doesn't follow the discussion on Boost
>> developers mailing list. We now have a new module, Boost.Core. It's a
>> module for various light-weight tools with nearly no dependencies. Headers
>> from Utility, Detail, etc. are being moved into it.
>>
>>  Today the new tool was added - boost::ignore_unused(). More or less
>> it's upgraded boost::ignore_unused_variable_warning(). It allows handling
>> more unused variables than one and unused typedefs as well. Like this:
>>
>>  #include <boost/core/ignore_unused.hpp>
>>
>> // ...
>>
>>  boost::ignore_unused(v1, v2, v3);
>> boost::ignore_unused<T1, T2, T3>();
>>
>>  I'd like to use it to fix GCC >=4.8 unused local typedefs warnings (in
>> strategies concept checks). This means that in order to properly build
>> tests you'd need to update ModularBoost (and if needed manually initialize
>> the new module - I was forced to do it on Windows but maybe I did something
>> wrong).
>>
>> Are you ok with this?
>>
>>
>> I recently updated to Ubuntu 13.10, where g++ 4.8 is the default
>> compiler. When trying to compile unit tests I got all sort of unused
>> typedef warnings, which was really annoying, and I had to install g++ 4.7
>> to be able to avoid them. Hopefully what you propose will change this.
>>
>>
> I also fixed some unused variables warnings in some libraries which
> Geometry depends on.
> I'm only waiting on uBlas to merge my PR, also with the msvc-12 error fix
> :/
>
> To disable those unused typedefs warnings you can pass a parameter to the
> compiler like this:
>
> b2 cxxflags="-Wno-unused-local-typedefs"
>
>
>>  BTW, it would be convenient to explain in more detail what you mean by
>> "initialize the new module".
>>
>>
> When I switched to develop branch in the modular-boost and pulled, the
> libs/core/ directory was created but was empty. AFAIR this helped:
>
> git submodule init libs/core
>

Instead of the above I might have used:

git submodule update --init libs/core

I don't remember exactly...

> cd libs/core
> git checkout develop
> git pull
>
> Regards,
> Adam
>
> P.S. http://git-scm.com/docs/git-submodule
>