Bug#1052588: antlr3: FTBFS with default Java 21

[Vladimir Petko]

Source: antlr3
Version: 3.5.3-1
Severity: normal
Tags: ftbfs
User: debian-java at lists.debian.org
Usertags: default-java21
X-Debbugs-Cc: vladimir.petko at canonical.com

Dear Maintainers,

The package antlr3 ftbfs with default Java 21.
The relevant part of the build log:
---------------
# Build the Ant task
javac -source 7 -target 7 -encoding ISO-8859-1 -g -cp /usr/share/java/ant.jar antlr-ant/main/antlr3-task/antlr3-src/org/apache/tools/ant/antlr/ANTLR3.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: *** [debian/rules:39: common-post-build-indep] Error 2
dpkg-buildpackage: error: fakeroot debian/rules binary subprocess returned exit status 2
---------------


-- System Information:
Debian Release: bookworm/sid
  APT prefers lunar-updates
  APT policy: (500, 'lunar-updates'), (500, 'lunar-security'), (500, 'lunar'), (100, 'lunar-backports')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.2.0-33-generic (SMP w/32 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled