--- libreadline-java-0.8.3/Makefile	2024-09-24 11:56:26.680687376 +0200
+++ libreadline-java-0.8.3/Makefile	2024-09-24 12:01:12.635966813 +0200
@@ -163,10 +163,20 @@
 world : jar build-native
 
 jar: build-java
-	cd $(BUILDDIR) ; $(JAVA_HOME)/bin/jar -cvmf ../$(MF_STUB) ../$(JAR) *
+	cd $(BUILDDIR) ; $(JAVA_HOME)/bin/jar \
+		--date="$$(date -u -d @$${SOURCE_DATE_EPOCH:-$$(date +%s)} +%Y-%m-%dT%H:%M:%SZ)" \
+		--create \
+		--verbose \
+		--manifest=../$(MF_STUB) \
+		--file=../$(JAR) *
 
 $(JAR):
-	cd $(BUILDDIR) ; $(JAVA_HOME)/bin/jar -cvmf ../$(MF_STUB) ../$(JAR) *
+	cd $(BUILDDIR) ; $(JAVA_HOME)/bin/jar \
+		--date="$$(date -u -d @$${SOURCE_DATE_EPOCH:-$$(date +%s)} +%Y-%m-%dT%H:%M:%SZ)" \
+		--create \
+		--verbose \
+		--manifest=../$(MF_STUB) \
+		--file=../$(JAR) *
 
 build-java: $(BUILDDIR)
 	cd src ; $(MAKE) JAVAC="$(JAVAC)" JC_FLAGS="$(JC_FLAGS)" \