> Please let me know if you need any help with this change. To be honest I'm an autoconf guy, and dwdiff uses a somewhat ad-hoc config system. No doubt I could puzzle it out, but if you've already run through that gauntlet I'd certainly say: patches welcome!
(It looks to me like pkg-config icu-i18n --libs-only-l is all that's needed, and the remaining icu-config calls can be simply stripped out. Maybe pkg-config icu-i18n --cflags just for completeness, although it returns the empty string so in the end there's not much point.)
