libsvm: FTBFS with default Java 21

[Vladimir Petko]

The package libsvm ftbfs with default Java 21.
The relevant part of the build log:
---------------
m4 libsvm/svm.m4 > libsvm/svm.java
javac -target 1.7 -source 1.7 libsvm/svm.java
warning: [options] bootstrap class path not set in conjunction with -source 7
error: Source option 7 is no longer supported. Use 8 or later.
error: Target option 7 is no longer supported. Use 8 or later.
make[3]: *** [Makefile:17: libsvm/svm.class] Error 2
make[3]: Leaving directory '/<<PKGBUILDDIR>>/java'
make[2]: *** [debian/rules:56: override_dh_auto_build-indep] Error 2
make[2]: Leaving directory '/<<PKGBUILDDIR>>'
make[1]: *** [debian/rules:39: build] Error 2
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:39: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2
--------------------------------------------------------------------------------
Build finished at 2023-12-04T10:19:30Z
---------------

[Vladimir Petko (vpa1977)]

piuparts install/upgrade/purge test (pass)

[Launchpad Janitor (janitor)]

This bug was fixed in the package libsvm - 3.24+ds-6ubuntu2

---------------
libsvm (3.24+ds-6ubuntu2) noble; urgency=medium

  * d/control: add java-common to Build-Depends to resolve build
    failure on platforms other than amd64.

libsvm (3.24+ds-6ubuntu1) noble; urgency=medium

  * d/rules, d/target-source.patch: use java_compat_level variable
    provided by java-common to adjust -source/-target level to the
    minimum required by the default Java (LP: #2054242).

 -- Vladimir Petko <email address hidden> Thu, 22 Feb 2024 16:33:36 +1300