1) a hint, if you want to verify a config step:
$ perl Configure.pl --verbose-step=ICU
2) verify that you link against the correct libicu
$ nm -u parrot | grep isdigit u_isdigit_3_2
3) we could probably lift the restriction that we link with c++ I replaced LINK = c++ with LINK = cc in the Makefile and it works.
4) icu related config options and icu.pl can be cleaned now
5) if you move $parrot/icu e.g. to $parrot/_icu you can run
$ per Configure.pl --nomanicheck
Please verify the build on Windows platforms, thanks
leo