Warnings with ITKv5.1 + clang11

[hjmjohnson]

In file included from /user/iibi/johnsonhj/src/ITK/Modules/Remote/BioCell/src/itkBioGene.cxx:19:
/user/iibi/johnsonhj/src/ITK/Modules/Remote/BioCell/include/itkBioGene.h:52:35: warning: anonymous non-C-compatible type given name for linkage purposes by alias declaration; add a tag name here [-Wnon-c-typedef-for-linkage]
using ControlDomainType = struct
^
ControlDomainType
/user/iibi/johnsonhj/src/ITK/Modules/Remote/BioCell/include/itkBioGene.h:52:29: note: type is not C-compatible due to this member declaration
using ControlDomainType = struct
^~~~~~
/user/iibi/johnsonhj/src/ITK/Modules/Remote/BioCell/include/itkBioGene.h:52:9: note: type is given name 'ControlDomainType' for linkage purposes by this alias declaration
using ControlDomainType = struct
^
1 warning generated.
[289/3196] Building CXX object Modules/Remote/BioCell/test/CMakeFiles/BioCellTestDriver.dir/itkBioGeneTest.cxx.o
In file included from /user/iibi/johnsonhj/src/ITK/Modules/Remote/BioCell/test/itkBioGeneTest.cxx:21:
/user/iibi/johnsonhj/src/ITK/Modules/Remote/BioCell/include/itkBioGene.h:52:35: warning: anonymous non-C-compatible type given name for linkage purposes by alias declaration; add a tag name here [-Wnon-c-typedef-for-linkage]
using ControlDomainType = struct
^
ControlDomainType
/user/iibi/johnsonhj/src/ITK/Modules/Remote/BioCell/include/itkBioGene.h:52:29: note: type is not C-compatible due to this member declaration
using ControlDomainType = struct
^~~~~~
/user/iibi/johnsonhj/src/ITK/Modules/Remote/BioCell/include/itkBioGene.h:52:9: note: type is given name 'ControlDomainType' for linkage purposes by this alias declaration
using ControlDomainType = struct
^
1 warning generated.
[314/3196] Building CXX object Modules/Remote/BioCell/CMakeFiles/BioCellHeaderTest1.dir/test/BioCellHeaderTest1.cxx.o
In file included from Modules/Remote/BioCell/test/BioCellHeaderTest1.cxx:28:
/user/iibi/johnsonhj/src/ITK/Modules/Remote/BioCell/include/itkBioGene.h:52:35: warning: anonymous non-C-compatible type given name for linkage purposes by alias declaration; add a tag name here [-Wnon-c-typedef-for-linkage]
using ControlDomainType = struct
^
ControlDomainType
/user/iibi/johnsonhj/src/ITK/Modules/Remote/BioCell/include/itkBioGene.h:52:29: note: type is not C-compatible due to this member declaration
using ControlDomainType = struct
^~~~~~
/user/iibi/johnsonhj/src/ITK/Modules/Remote/BioCell/include/itkBioGene.h:52:9: note: type is given name 'ControlDomainType' for linkage purposes by this alias declaration
using ControlDomainType = struct
^

[hjmjohnson]

@mseng10 Please fix this when addressing other remote issues.

[mseng10]

@hjmjohnson I am having issues reproducing this error. I am using ITKv5.1 and clang11. I was able to reproduce the other clang error for BSplineGradient.