Build Bazel on ArchLinux ARM on android

[Abstract]
Building bazel on ArchLinux (TermuxArch) on android

[Details]
-Install Oracle jdk 8.
(openjdk8 via pacman is too old.)
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

> pacman -S zip
(Important: zip command is used in the end of building. Without zip, build is end with error.)

Get bazel-*-dist.zip (bazel-0.12.0-dist.zip)
https://github.com/bazelbuild/bazel/releases

Modify script/bootstrap/compile.sh and add java heap memory.
run "${JAVAC}" -verbose -J-Xms1024m -J-Xmx1024m -classpath ...

Set jobs to 1.
> export EXTRA_BAZEL_ARGS='--jobs 1'
(If jobs is not 1, illegal seek error will happen and build fail.)

On top directory, run the follow command. And wait for hours.
> ./compile.sh

If build succed, copy bazel binary.
> cp output/bazel /usr/local/bin/

Complete.

(所感: bazelのビルドは失敗すると最初からやり直しで数時間コース。デフォルトではログも出ない、illegal seekなど罠も多く、いったい何回試行錯誤したことか！ちなみにjdk9でもまだうまくいきません。)

(次回: おまちかね、tensorflowのビルド！そこにはさらなる罠が！？)