Hello, I have found the hard way that jni.h need not to be in the default include path (like it is for gcj) and that the right include directories are maintained by alternatives, ready to use, so the following ensures the spec using jni bindings compiles under any java: BuildRequires: java-devel [...] for i in -I/usr/lib/jvm/java/include{,/linux}; do java_inc="$java_inc $i" done %configure CPPFLAGS="$java_inc" (see also http://bugzilla.redhat.com/498964#c2) Could this information be added to Packaging:Java? Is there anything I can do for it? (To save my successors a few days of investigation.) Cheers, Stepan