set javac source / target version to 1.8 to fix issues with Java 11

Resolves: RHEL-68777

antlr-build.xml

@@ -36,7 +36,7 @@
   <!-- Build classes -->
   <target name="classes" depends="prepare">
     <javac srcdir="${src}" destdir="${build.classes}"
-      debug="off" optimize="on" deprecation="on"/>
+      debug="off" optimize="on" deprecation="on" source="1.8" target="1.8" />
   </target>
 
   <!-- Build jar archives -->
@@ -61,6 +61,7 @@
       packagenames="${packagenames}"
       splitindex="true"
       use="true"
+      source="1.8"
       additionalparam="-Xdoclint:none">
       <link href="${j2se.apidoc}"/>
     </javadoc>

antlr.spec

@@ -4,7 +4,7 @@
 Summary:       ANother Tool for Language Recognition
 Name:          antlr
 Version:       2.7.7
-Release:       72%{?dist}
+Release:       73%{?dist}
 License:       ANTLR-PD
 URL:           http://www.antlr2.org/
 # ./generate-tarball.sh
@@ -128,6 +128,9 @@ install -p -m 755 scripts/antlr-config $RPM_BUILD_ROOT%{_bindir}
 %license LICENSE.txt
 
 %changelog
+* Wed Dec 04 2024 Mikolaj Izdebski <mizdebsk@redhat.com> - 2.7.7-73
+- set javac source / target version to 1.8 to fix issues with Java 11
+
 * Sun Nov 24 2024 Marián Konček <mkoncek@redhat.com> - 2.7.7-72
 - Rebuild