Use clang when compiling xdk on ubuntu CI jobs.
In CI ubuntu jobs, the Superbuild xdk is currently compiled with gcc while otb is compiled with clang.
In particular, this means that ITK is compiled with gcc whereas otb is compiled with clang. This is not a problem if we want to compile otb using ITK4: ITK uses the cmake
WriteCompilerDetectionHeader function, which produces headers defining the allowed compilers when including ITK files. In ITK4 the list of allowed compilers is fixed (AppleClang Clang GNU MSVC SunPro and Intel) but in ITK5 the only compiler allowed is the one used to compile ITK.
Therefore we should use the same compiler for ITK and OTB
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👍votes from core developers, no 👎vote.
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git diff develop... -U0 --no-color | clang-format-diff.py -p1 -ion latest changes and commit