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You'd better consult a lawyer I if you're planning on running anything other than GPL software on a phone, because I'm pretty sure the classpath exception doesn

by jancona 16y ago

You'd better consult a lawyer I if you're planning on running anything other than GPL software on a phone, because I'm pretty sure the classpath exception doesn't apply on mobile platforms, meaning that anything you run on the GPL JVM must itself be GPL.

rst 16y ago
Well, I don't see any platform restrictions in the text of the classpath exception here: http://openjdk.java.net/legal/gplv2+ce.html http://openjdk.java.net/legal/gplv2+ce.html I know they require that an alternative implementation have platform restrictions before they'll let it run the TCK (which was the problem with Apache Harmony), but I don't see any in the license for OpenJDK itself. Is there some other source I should be looking at? Full text, from there (applying only to source files that specifically say "subject to the 'Classpath' exception" in the header): Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.
- jancona 16y ago
  If use the J2SE code (which is GPL with classpath exception) you can't run the TCK. Without passing the TCK you can't call it Java, and you don't get the patent license. See here: http://skife.org/java/jcp/2010/12/07/the-tck-trap.html http://skife.org/java/jcp/2010/12/07/the-tck-trap.html If you use the J2ME code, presumably you can get the TCK for mobile use (and associated patent protection), but the license doesn't include the classpath exception.
  - rst 16y ago
    And that applies even if you're running OpenJDK unaltered, which is certified as passing the TCK by Oracle itself?

by jancona 16y ago

rst 16y ago

Well, I don't see any platform restrictions in the text of the classpath exception here: http://openjdk.java.net/legal/gplv2+ce.html http://openjdk.java.net/legal/gplv2+ce.html I know they require that an alternative implementation have platform restrictions before they'll let it run the TCK (which was the problem with Apache Harmony), but I don't see any in the license for OpenJDK itself. Is there some other source I should be looking at? Full text, from there (applying only to source files that specifically say "subject to the 'Classpath' exception" in the header): Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

jancona 16y ago
If use the J2SE code (which is GPL with classpath exception) you can't run the TCK. Without passing the TCK you can't call it Java, and you don't get the patent license. See here: http://skife.org/java/jcp/2010/12/07/the-tck-trap.html http://skife.org/java/jcp/2010/12/07/the-tck-trap.html If you use the J2ME code, presumably you can get the TCK for mobile use (and associated patent protection), but the license doesn't include the classpath exception.
- rst 16y ago
  And that applies even if you're running OpenJDK unaltered, which is certified as passing the TCK by Oracle itself?