The tools pkgdata and genccode on Windows currently support ARM 32-bit, but not ARM 64-bit.
However, when building the data .obj files, the image file type doesn't need to be set, as the unknown type can be used: IMAGE_FILE_MACHINE_UNKNOWN.
This is what is currently used for AMD64 (x64) architecture.
We should modify this to simply the code, which will also enable support for ARM64 as well.
From the file pkg_genc.cpp
Here is what the current code looks like:
(Thanks to Jon Kunkee for pointing out the bug here.)