debian/changelog

+mpj (0.44+dfsg-3~bpo8+1) jessie-backports; urgency=medium
+
+  * Rebuild for jessie-backports.
+
+ -- Andreas Tille <tille@debian.org>  Mon, 30 May 2016 21:52:39 +0200
+
+mpj (0.44+dfsg-3) unstable; urgency=medium
+
+  * Avoid name space conflict with libopenmpi-java since both packages
+    provide /usr/share/java/mpi.jar
+
+ -- Andreas Tille <tille@debian.org>  Tue, 24 May 2016 20:58:36 +0200
+
 mpj (0.44+dfsg-2~bpo8+1) jessie-backports; urgency=medium
 
   * Rebuild for jessie-backports.

debian/rules

@@ -20,11 +20,17 @@ override_dh_install:
 	    sed '1a export MPJ_HOME=$(MPJ_HOME)' $${bin} > $(BINDIR)/$${realbin} ; \
 	done
 
-override_dh_link:
-	dh_link
-	mkdir $(LIBDIR)/lib
-	for lib in lib/* ; do \
-	    ln -s ../../java/`basename $${lib}` $(LIBDIR)/$${lib} ; \
+override_jh_installlibs:
+	jh_installlibs
+	# Amongst the resulting JARs we have /usr/share/java/mpi.jar which is
+        # also in libopenmpi-java.  So all JARs will go into private MPJ_HOME
+	# and only /usr/share/java/mpj.jar will be exposed in /usr/share/java
+	mkdir -p $(LIBDIR)/lib
+	mv debian/$(DEBPKGNAME)/usr/share/java/* $(LIBDIR)/lib
+	mkdir -p debian/$(DEBPKGNAME)/usr/share/java/
+	for lib in $(LIBDIR)/lib/mpj[-.0-9]*jar ; do \
+	    echo "linking $${lib}" ; \
+	    ln -s ../mpj/lib/`basename $${lib}` debian/$(DEBPKGNAME)/usr/share/java/`basename $${lib}` ; \
 	done
 
 override_dh_fixperms: