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

[Williams, Norman K]

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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