Re: [Vxl-users] static const float initialization in vnl class definitions

[Ian S. <sc...@im...>]

Hi,

I don't kow how much this will help, but this is the patch we applied on 
a private version of VXL to get C++11 constexpr static initialisation 
working for vnl_math on gcc and MSVC, whilst maintaining C++98 
compatibility.

Ian.



On 18/01/2014 21:01, Brandon Mayer wrote:
> Hello all,
>
> I would like to link a client application build with clang under osx
> mavericks to VXL libraries also built with clang and mac osx mavericks.
> While there were no problems building VXL using the default settings,
> the client application uses c++11 features (std::thread) and needed to
> have the -std=c++11 passed to clang which resulted in build errors due
> to static const float initialization inside vnl class class definitions
> (vnl_numeric_limits.h) which was included in the client application. To
> solve the problem, I set VCL_STATIC_CONST_INIT_FLOAT=0 in the
> automatically generated ${VXLBIN}/vcl_config_compiler.h file and rebuilt
> VXL.
>
> After that the client application successfully builds because when it
> includes relevant vnl headers, there are no static constant float
> initializations in the class definitions which clang doesn't seem to
> like if the -std=c++11 flag is used but doesn't mind otherwise.
>
> So, Is there a way to specify to specify via CMAKE or an environment
> variable that despite the result of the configuration test in
> ${VXLSRC}/configure, line 3798, I do not want to have static constant
> floats initialized inside class definitions?
>
> Thanks for your help and I'm sorry if the answer is something obvious
> that I missed.
>
> Brandon
>
> --
> Brandon Mayer
> b.m...@gm... <mailto:b.m...@gm...>
> 516.672.0551
>
>
>
> ------------------------------------------------------------------------------
> CenturyLink Cloud: The Leader in Enterprise Cloud Services.
> Learn Why More Businesses Are Choosing CenturyLink Cloud For
> Critical Workloads, Development Environments & Everything In Between.
> Get a Quote or Start a Free Trial Today.
> http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.clktrk
>
>
>
> _______________________________________________
> Vxl-users mailing list
> Vxl...@li...
> https://lists.sourceforge.net/lists/listinfo/vxl-users
>