M1 native build of Durin

[graeme-winter]

As reported by Kay Diederichs, please could we make a native build of durin for macOS on M1 - against HDF5 1.12 which appears to support that platform.

[graeme-winter]

Also need to probably update the API calls for 1.12

[KayDiederichs]

https://portal.hdfgroup.org/display/HDF5/Migrating+from+HDF5+1.10+to+HDF5+1.12 seems to be relevant.

Unfortunately it seems I cannot even properly compile HDF5-1.12.1 on the Intel Mac, using BigSur and gcc-11.2 : it compiles ok, but reports an error in "testhdf5" when using "make check".

The release notes for HDF5 1.10.8 mention Apple M1 as a platform.

[KayDiederichs]

For the record: "make check" of HDF5 1.10.3 crashes my M1 Mac in the "testswmr" test.
HDF5 1.10.8 however is fine, and Durin can be built for M1 Mac, and seems to work well (tried only with the thaumatin_9_1 data that I think are at Zenodo, and serve as example for NeXus).

[KayDiederichs]

For the record: My recipe for compiling a native durin on Apple M1 is
a) install https://github.com/fxcoudert/gfortran-for-macOS/releases/tag/12-arm-alpha . This provides gfortran gcc g++, and is then used to compile a native M1 XDS because there is no native Fortran compiler in Xcode. Unfortunately, gfortran /gcc compiled software does not interact well with Apple's CLANG/LLVM which means that durin must also compiled with this version of gcc/g++.
b) So, to use this compiler
export CC=/usr/local/gfortran/bin/gcc
export CXX=/usr/local/gfortran/bin/g++
export PATH=/usr/local/gfortran/bin:$PATH
c) proceed with installing durin as normal (using HDF5 1.10.8 as I said above)

BTW, despite the name, the compiler works well not only on Montery M1 Macs, but also on BigSur M1 Macs.

[KayDiederichs]

See also #27 concerning requirement for the libh5bhuf plugin.