legOS/brickOS: a despairing cry for help!

Has anyone recently built legOS or installed winlegOS under windows? If
so please mention which route/version you have used.

So far I tried:-

1. winlegOS: Installs but fails to build Demo (or anything else)
without a useful explanation:-

c:/tools/winlegos/util/makelx helloworld.ds1 helloworld.ds2
helloworld.lx
usage: /tools/winlegos/util/makelx.exe file.ds1 file.ds2 file.lx
make.exe: *** [helloworld.lx] Error 1

(The .ds1 and .ds2 files are present)

2. Full 110 MB cygwin install, cross-compiler build as described @
sourceforge (brickOS 0.2.6.10 Instructions for installing on
Win9x/NT/2000/XP). But Building GCC (buildgcc.sh) I get:-

install:  g++.exe does not exist
chmod: cannot access `/usr/local/bin/g++.exe': No such file or
directory

the only g++.exe I see is in /bin - did I do something wrong?

3. I also tried loading a prebuilt H8 cross compiler and latest brickos
(0.9.0) but:-

/usr/local/crossgcc/h8300-hitachi-hms/bin/h8300-hms-gcc -O2 ... -c
printf.c -o printf.o
printf.c:25: stdarg.h: No such file or directory

(cygwin configuration is such fun:)