more findable locations for compiled/generated files in the build tree?

[Peter Maydell]

Is it possible to get Meson to put the files that are
generated/compiled as part of the build process in more
sensibly findable locations? I would generally expect
that a file foo.c should generate into foo.o, and
foo/bar.c should generate into foo/bar.o, and if we
generate a .c file from foo/bar.decode then it ought
to end up in foo/bar.c or something similar.
The old build system got all this generally right.
Meson seems to do silly things involving turning
directory structures into filenames, putting enormous
numbers of object files into single directories, and
I have no idea where to find anything in the build
tree any more :-(

thanks
-- PMM