[ITK-dev] Linux c++11 build issue v4.8.2

[David Burns]

Thanks Hans, based on the release schedule it looks like that will be 
out pretty soon.

That's a big improvement to ITK to add c++11 support in my opinion. Thanks.

David

On 12/15/15 15:36, Johnson, Hans J wrote:
> This will be fixed when VXL is updated after the 4.9 release.
>
> Hans
>
>
> From: Insight-developers <insight-developers-bounces at itk.org 
> <mailto:insight-developers-bounces at itk.org>> on behalf of David Burns 
> <david.mo.burns at gmail.com <mailto:david.mo.burns at gmail.com>>
> Date: Tuesday, December 15, 2015 at 2:10 PM
> To: "insight-developers at itk.org <mailto:insight-developers at itk.org>" 
> <insight-developers at itk.org <mailto:insight-developers at itk.org>>
> Subject: [ITK-dev] Linux c++11 build issue v4.8.2
>
> Dear Insight Developers
>
> I have compiled v4.8.2 on Ubuntu 14.04 successfully (g++ 4.8), 
> however, I get compiler errors when building my own ITK applications 
> with the following cmake flag
>
> set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11"
>
> I can compile ITK applications when not using this flag.
>
> I have tried using -fpermissive when building my application. I have 
> also tried compiling ITK using -std=c++11 -fpermissive, individually 
> and in combination. I always get the same errors.
>
> Any suggestions would be welcome. Thanks
>
> David
>
>
>
> Compiler errors
>
> /usr/local/include/ITK-4.8/vnl/vnl_numeric_traits.h:387:60: warning: 
> 'constexpr' needed for in-class initialization of static data member 
> 'const float vnl_numeric_traits<float>::zero' of non-integral type 
> [-fpermissive]
>    static const float zero VCL_STATIC_CONST_INIT_FLOAT_DECL(0.0F);
> ^
> /usr/local/include/ITK-4.8/vcl_config_compiler.h:152:48: note: in 
> definition of macro 'VCL_STATIC_CONST_INIT_FLOAT_DECL'
>  # define VCL_STATIC_CONST_INIT_FLOAT_DECL(x) = x
>                                                 ^
> /usr/local/include/ITK-4.8/vnl/vnl_numeric_traits.h:389:59: warning: 
> 'constexpr' needed for in-class initialization of static data member 
> 'const float vnl_numeric_traits<float>::one' of non-integral type 
> [-fpermissive]
>    static const float one VCL_STATIC_CONST_INIT_FLOAT_DECL(1.0F);
>                                                            ^
> /usr/local/include/ITK-4.8/vcl_config_compiler.h:152:48: note: in 
> definition of macro 'VCL_STATIC_CONST_INIT_FLOAT_DECL'
>  # define VCL_STATIC_CONST_INIT_FLOAT_DECL(x) = x
>                                                 ^
> /usr/local/include/ITK-4.8/vnl/vnl_numeric_traits.h:391:62: warning: 
> 'constexpr' needed for in-class initialization of static data member 
> 'const float vnl_numeric_traits<float>::maxval' of non-integral type 
> [-fpermissive]
>    static const float maxval 
> VCL_STATIC_CONST_INIT_FLOAT_DECL(3.40282346638528860e+38F);
> ^
> /usr/local/include/ITK-4.8/vcl_config_compiler.h:152:48: note: in 
> definition of macro 'VCL_STATIC_CONST_INIT_FLOAT_DECL'
>  # define VCL_STATIC_CONST_INIT_FLOAT_DECL(x) = x
>                                                 ^
> /usr/local/include/ITK-4.8/vnl/vnl_numeric_traits.h:410:61: warning: 
> 'constexpr' needed for in-class initialization of static data member 
> 'const double vnl_numeric_traits<double>::zero' of non-integral type 
> [-fpermissive]
>    static const double zero VCL_STATIC_CONST_INIT_FLOAT_DECL(0.0);
> ^
> /usr/local/include/ITK-4.8/vcl_config_compiler.h:152:48: note: in 
> definition of macro 'VCL_STATIC_CONST_INIT_FLOAT_DECL'
>  # define VCL_STATIC_CONST_INIT_FLOAT_DECL(x) = x
>                                                 ^
> /usr/local/include/ITK-4.8/vnl/vnl_numeric_traits.h:412:60: warning: 
> 'constexpr' needed for in-class initialization of static data member 
> 'const double vnl_numeric_traits<double>::one' of non-integral type 
> [-fpermissive]
>    static const double one VCL_STATIC_CONST_INIT_FLOAT_DECL(1.0);
> ^
> /usr/local/include/ITK-4.8/vcl_config_compiler.h:152:48: note: in 
> definition of macro 'VCL_STATIC_CONST_INIT_FLOAT_DECL'
>  # define VCL_STATIC_CONST_INIT_FLOAT_DECL(x) = x
>                                                 ^
> /usr/local/include/ITK-4.8/vnl/vnl_numeric_traits.h:414:63: warning: 
> 'constexpr' needed for in-class initialization of static data member 
> 'const double vnl_numeric_traits<double>::maxval' of non-integral type 
> [-fpermissive]
>    static const double maxval 
> VCL_STATIC_CONST_INIT_FLOAT_DECL(1.7976931348623157E+308);
> ^
> /usr/local/include/ITK-4.8/vcl_config_compiler.h:152:48: note: in 
> definition of macro 'VCL_STATIC_CONST_INIT_FLOAT_DECL'
>  # define VCL_STATIC_CONST_INIT_FLOAT_DECL(x) = x
>                                                 ^
> /usr/local/include/ITK-4.8/vnl/vnl_numeric_traits.h:433:66: warning: 
> 'constexpr' needed for in-class initialization of static data member 
> 'const long double vnl_numeric_traits<long double>::zero' of 
> non-integral type [-fpermissive]
>    static const long double zero VCL_STATIC_CONST_INIT_FLOAT_DECL(0.0);
> ^
> /usr/local/include/ITK-4.8/vcl_config_compiler.h:152:48: note: in 
> definition of macro 'VCL_STATIC_CONST_INIT_FLOAT_DECL'
>  # define VCL_STATIC_CONST_INIT_FLOAT_DECL(x) = x
>                                                 ^
> /usr/local/include/ITK-4.8/vnl/vnl_numeric_traits.h:435:65: warning: 
> 'constexpr' needed for in-class initialization of static data member 
> 'const long double vnl_numeric_traits<long double>::one' of 
> non-integral type [-fpermissive]
>    static const long double one VCL_STATIC_CONST_INIT_FLOAT_DECL(1.0);
> ^
> /usr/local/include/ITK-4.8/vcl_config_compiler.h:152:48: note: in 
> definition of macro 'VCL_STATIC_CONST_INIT_FLOAT_DECL'
>  # define VCL_STATIC_CONST_INIT_FLOAT_DECL(x) = x
>                                                 ^
> /usr/local/include/ITK-4.8/vnl/vnl_numeric_traits.h:437:68: warning: 
> 'constexpr' needed for in-class initialization of static data member 
> 'const long double vnl_numeric_traits<long double>::maxval' of 
> non-integral type [-fpermissive]
>    static const long double maxval 
> VCL_STATIC_CONST_INIT_FLOAT_DECL(1.7976931348623157E+308);
> ^
> /usr/local/include/ITK-4.8/vcl_config_compiler.h:152:48: note: in 
> definition of macro 'VCL_STATIC_CONST_INIT_FLOAT_DECL'
>  # define VCL_STATIC_CONST_INIT_FLOAT_DECL(x) = x
>                                                 ^
>
>
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