[U-Boot] No support for "standalone" applications in FIT image?

I've built a standalone application that uses exported u-boot functions. It worked fine when I was loading the binary with "go", but when I attempted to package the binary in a FIT image, to be loaded with bootm, I ran into trouble... Specifically, although the header seems to be parsed correctly,

[U-Boot] How to build standalone app *outside* u-boot build tree

I'd like to build my own application - something like examples/standalone/hello_world - but if possible, I'd like to build it outside the u-boot tree. The standalone examples are meant to be invoked with a recursive make from an ancestor directory in the u-boot tree. They don't work if you just cop