Okay Nick, I've gone ahead and reported it here:
http://sourceware.org/bugzilla/show_bug.cgi?id=11711
(added you to the CC list - I hope you don't mind.)
I note there that if backwards-compatibility is necessary, then at least
"--include-dir=res" can behave as expected. I agree, it's barely note
Hello,
If you specify "res" as an include directory via the "-I" or "--include-dir="
options, windres mistakenly assumes this to be the output format (and issues a
warning saying to use "-J" instead). The workaround if you have such an input
directory named "res" is to specify it as "./res", t
