[MacPorts] #55659: bazel doesn't build with JDK 9.0.1

[MacPorts]

#55659: bazel doesn't build with JDK 9.0.1
------------------------------+-------------------
 Reporter:  korni             |      Owner:
     Type:  defect            |     Status:  new
 Priority:  Normal            |  Milestone:
Component:  ports             |    Version:  2.4.2
 Keywords:  bazel, jdk, java  |       Port:  bazel
------------------------------+-------------------
 The JDK version is determined by

 {{{
 % /Library/Java/JavaVirtualMachines/jdk-9.0.1.jdk/Contents/Home/bin/javac
 -version
 javac 9.0.1
 }}}

 bazel-0.5.2-dist/scripts/bootstrap/buildenv.sh, line 292:

 {{{
 if [[ "$JAVAC_VERSION" =~ javac\ (1\.([789]|[1-9][0-9])).*$ ]]; then
     JAVAC_VERSION=${BASH_REMATCH[1]}
 }}}

 expects something like
 {{{
 %
 /Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/bin/javac
 -version
 javac 1.7.0_79
 }}}

 and thus is unable to retrieve the version number, breaking the build.

--
Ticket URL: <https://trac.macports.org/ticket/55659>
MacPorts <https://www.macports.org/>
Ports system for macOS