[Bug 1766995] Re: [SRU] ceph: replace javah usage with a call to javac

[Łukasz Zemczak]

Hello Tiago, or anyone else affected,

Accepted ceph into bionic-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/ceph/12.2.4-0ubuntu1.1
in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-bionic to verification-done-bionic. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-bionic. In either case, without details of
your testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: ceph (Ubuntu Bionic)
       Status: New => Fix Committed

** Tags added: verification-needed verification-needed-bionic

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https://bugs.launchpad.net/bugs/1766995

Title:
  [SRU] ceph: replace javah usage with a call to javac

Status in ceph package in Ubuntu:
  New
Status in ceph source package in Bionic:
  Fix Committed

Bug description:
  [Impact] 
  Currently ceph 12.2.4-0ubuntu1 FTBFS on Bionic because it can't find the javah binary.

  The javah binary has been removed from OpenJDK 10 and the java
  compiler should be used in its place to build native headers by
  calling "javac -h".

  [Test Case]
  Build ceph 12.2.4-0ubuntu1 in Bionic with a current default-jdk (ie. depends on openjdk-11-jdk), it should FTBFS with:

  [ 41%] Generating native/com_ceph_fs_CephMount.h
  cd /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/src/java && Java_JAVAH_EXECUTABLE-NOTFOUND -classpath /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/src/java/libcephfs.jar -jni -o /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/src/java/native/com_ceph_fs_CephMount.h com.ceph.fs.CephMount
  /bin/sh: 1: Java_JAVAH_EXECUTABLE-NOTFOUND: not found

  When fixed the build is build is expected to succeed.

  [Regression Potential] 
  No regression is expected as the generated headers are the same.

  [Other Info]
   * This SRU should not be backported to any Ubuntu release were the default-jdk depends on openjdk-8 (although it is supposed to be supported, I haven't tested that).
   * The javac -h option has been available since OpenJDK 8 - see JEP-313 and JDK-8182758 [1].
   * Please note that it is not usually possible to simply replace "javah" calls with "javac -h": the syntax and expected arguments are different; the "-h <output header directory>" argument should be added to the existing javac calls.

  [References]
  [1] https://bugs.java.com/view_bug.do?bug_id=JDK-8182758

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