failure trying to compile for arm64+android

I am trying to compile the source for arm64 using ndk-12b. I modified the android-configure script to allow arm64 as a target, and pointed to the arm64 toolchain. After grinding for a while, the build aborted here:

  LD_LIBRARY_PATH=/var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/lib.host:/var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/lib.target:$LD_LIBRARY_PATH; export LD_LIBRARY_PATH; cd ../tools/icu; mkdir -p /var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/obj/gen/icutmp; python icutrim.py -P "/var/lib/jenkins/jobs/j2v8/workspace/node/out/Release" -D ../../deps/icu-small/source/data/in/icudt57l.dat --delete-tmp -T "/var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/obj/gen/icutmp" -F icu_small.json -O icudt57l.dat -v -L en,root
Options: {'verbose': 1, 'filterfile': 'icu_small.json', 'toolpath': '/var/lib/jenkins/jobs/j2v8/workspace/node/out/Release', 'deltmpdir': 1, 'outfile': 'icudt57l.dat', 'datfile': '../../deps/icu-small/source/data/in/icudt57l.dat', 'locales': 'en,root', 'endian': 'little', 'tmpdir': '/var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/obj/gen/icutmp'}
icu_small.json: icutrim.py config: Trim down ICU to just a certain locale set, needed for node.js use.
/var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: 1: /var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: �Ё.Ё/Ё/: not found
/var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: 1: /var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: cannot open - No such file
/var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: 1: /var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: ELF��G
                                                                                                                                     @�?@8: not found
/var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: 6: /var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: cannot open 
                                                                                                                                           {� No such file
/var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: 6: /var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: �ay��!2: not found
/var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: 7: /var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: ��=: not found
�M5g not foundns/jobs/j2v8/workspace/node/out/Release/icupkg: 8: /var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: 2P^�
/var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: 9: /var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: cannot open �=��f~D�LUn@�d
                                                                                                                                                         �u
                                                                                                                                                           ���:��: No such file
/var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: 9: /var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: U3�E5�5�ylZ: not found
/var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: 1: /var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: -o^����
                                                                                                                                      S48
                                                                                                                                         ���sF: not found
/var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: 10: /var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg:�Hke8: not found
/var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: 11: /var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg: Syntax error: ")" unexpected
FAILED: /var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/icupkg -tl ../../deps/icu-small/source/data/in/icudt57l.dat /var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/obj/gen/icutmp/icudt57l.dat
make[1]: *** [/var/lib/jenkins/jobs/j2v8/workspace/node/out/Release/obj/gen/icutmp/icudt57l.dat] Error 1
make[1]: Leaving directory `/var/lib/jenkins/jobs/j2v8/workspace/node/out'
make: *** [node] Error 2

The build itself is being done on:

Linux usmeps008 3.13.0-85-generic #129-Ubuntu SMP Thu Mar 17 20:50:15 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

Using Android NDK 12b

Thanks for your help!

[edit bnoordhuis - fixed formatting]