[ITK-dev] Linux c++11 build issue v4.8.2
Bradley Lowekamp
blowekamp at mail.nih.gov
Thu Dec 17 10:18:01 EST 2015
Hello,
I thought we are requiring ITK to be built with C++11 if your application was going to be build with C++11.
Is this saying we are going to support changing the C++ language after CMake configuration of ITK?
I would think using the C++11 features of explicit constructor delete or default specifier may results is ABI compatibilities, among many other things.
Thanks,
Brad
> On Dec 15, 2015, at 5:06 PM, David Burns <david.mo.burns at gmail.com> wrote:
>
> 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: " <mailto:insight-developers at itk.org>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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