1. __declspec(deprecated) is okay for MSVC
2. strcasecmp is POSIX-only, _stricmp should be used for MSVC
Co-authored-by: yyc12345 <yyc12321@outlook.com>
realpath() doesn't exist on Windows. Replace it with _fullpath() which
does the same thing, as far as I can see (at least for creating an
absolute path, it doesn't seem to canonicalize the path, or the docs
doesn't say it, yet since we are controlling the arguments from our
CMake script, it's not a big problem anyway).
This fixed the CI build for Windows failing with:
> undefined reference to `realpath'
