[icu-support] Build on Cygwin for 64-bit windows failing

[Dave M. <dav...@nt...>]

I am unable to build ICU using a 64-bit environment in Cygwin. I have built other libraries (most significantly the Qt libraries) without problem, so I'm assuming the non-Cygwin parts of my build environment are OK. I am running the vcvars64.bat and adding my Cygwin bin directory to my path. Note that I can build the 32-bit version on this same machine (by running vcvars32.bat) without any problem, but when I switch to 64-bit, it fails.

The build proceeds without problem until some point in building the data libraries:

    make[2]: Entering directory `/cygdrive/path-to-build-dev/data'
    rm -rf icupkg.inc
    make[2]: Leaving directory `/cygdrive/path-to-build-dev/data'
    rc.exe /i../../source/data/../common /foout/tmp/icudata.res  -DU_RELEASE=1 -D_CRT_SECURE_NO_DEPRECATE C:/path-to-icu/icu/source/data/misc/icudata.rc
    Microsoft (R) Windows (R) Resource Compiler Version 6.1.7600.16385
    Copyright (C) Microsoft Corporation.  All rights reserved.
    Unpacking ../../source/data/in/icudt46l.dat and generating out/tmp/icudata.lst (list of data files)
    PATH=../lib:../stubdata:../tools/ctestfw:$PATH  ../bin/icupkg -d ./out/build/icu
    dt46l --list -x \* ../../source/data/in/icudt46l.dat -o out/tmp/icudata.lst
    make[1]: *** [out/tmp/icudata.lst] Error 127
    make[1]: Leaving directory `/cygdrive/path-to-build-dev/data'
    make: *** [all-recursive] Error 2
    make: Leaving directory `/cygdrive/path-to-build-dev'

Note the make Error 127, which means that some tool/command is missing. I have all of the necessary Cygwin packages installed, assuming the ICU README is accurate. Any ideas what might be missing?

Is icupkg.exe trying to call something that is bogus in a 64-bit build environment?

Thanks,

Dave