执行build文件缺少bazel，请问这个bazel是需要那个版本的呢？

[AbelRubick]

plato-master]$ ./build.sh
+++ dirname ./build.sh
++ realpath .

• ROOT_DIR=/home/zx/download/plato-master
• cd /home/zx/download/plato-master
• [[ '' == \c\l\e\a\n ]]
• export CC=/home/zx/download/plato-master/3rd/mpich/bin/mpicxx
• CC=/home/zx/download/plato-master/3rd/mpich/bin/mpicxx
• export BAZEL_LINKOPTS=-static-libstdc++
• BAZEL_LINKOPTS=-static-libstdc++
• export LD_LIBRARY_PATH=:/home/zx/download/plato-master/3rd/hadoop2/lib
• LD_LIBRARY_PATH=:/home/zx/download/plato-master/3rd/hadoop2/lib
• bazel test plato/...
  ./build.sh: line 19: bazel: command not found