[Insight-developers] Clang Warnings about in-class static initializers...

[Johnson, Hans J]

Kent,

This clang compiler flag may also be useful for suppressing this warning:

-Wno-c++0x-static-nonintegral-init

Hans


On 12/16/11 3:12 PM, "Johnson, Hans J" <hans-johnson at uiowa.edu> wrote:

>Kent some more information:
>
>http://stackoverflow.com/questions/2454019/why-arent-static-const-floats-a
>l
>lowed
>
>
>
>And may be related to
>
>https://issues.itk.org/jira/browse/HISTITK-1236
>
>Hans
>
>
>
>
>On 12/16/11 1:37 PM, "Williams, Norman K" <norman-k-williams at uiowa.edu>
>wrote:
>
>>It appears that this is a configuration issue. The vnl CMakeLists.txt
>>configures vcl_config_compiler.h.in
>>
>>
>>which defines VCL_STATIC_CONST_INIT_INT, which is set or unset based on
>>compiler tests.  There are 3 choices in order of preferability:
>>
>>1. in-class static initializers are supported.
>>2. in-class static initializers are not supported, and are a compiler
>>error.
>>3. in-class static initializers are supported, but when encountered, the
>>compiler issues a warning.
>>
>>What could remedy the situation without involving any modifications to
>>VNL
>>would be if theres a way to force VCL_STATIC_CONST_INIT_INT to be false/0
>>when CLang is used.
>>
>>On 12/16/11 10:13 AM, "Sean McBride" <sean at rogue-research.com> wrote:
>>
>>>On Fri, 16 Dec 2011 16:07:35 +0000, Williams, Norman K said:
>>>
>>>>The CLang I built was the SVN trunk as of yesterday.
>>>>
>>>>I do get all the way through building ITK4, so VXL is compiling on
>>>>Lion,
>>>>both with gcc-llvm-4.2 and CLang.
>>>
>>>Sorry, I should have been clearer... The (subset?) of vxl that's in ITK
>>>works fine when one builds ITK with clang.  But building vxl all by
>>>itself fails on the newest Lion.  Not sure really why it's not a problem
>>>for ITK.  Here's the thread if you're interested:
>>><http://sourceforge.net/mailarchive/forum.php?thread_name=20111201165654
>>>.
>>>1
>>>725884470%40mail.rogue-research.com&forum_name=vxl-users>
>>>
>>>>I am not on the VXL mailing list; it's kind of strange that they'd
>>>>persist
>>>>in using a language feature that's non standard, particularly when it's
>>>>so
>>>>easy to do it correctly.
>>>
>>>Dunno.  I don't follow vxl closely...
>>>
>>>--
>>>____________________________________________________________
>>>Sean McBride, B. Eng                 sean at rogue-research.com
>>>Rogue Research                        www.rogue-research.com
>>>Mac Software Developer              Montréal, Québec, Canada
>>>
>>>
>>
>>
>>
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