Re: Can OpenJDK's compiler replace ECJ for GCJ?

[Andrew Haley <aph at redhat dot com>]

Doug Nicholson writes:
 > I started working down this path yesterday but I didn't get very far.  I
 > downloaded the 30 Nov source zip and compiled it according to the
 > instructions using the 1.5.0_10 JDK.  When I executed it some class
 > loader barfed with an unsupported class version error.

Well, yeah.  That's because the class file version ID has been bumped.

 > It executes just fine using the 30 Nov snapshot of the 1.6.0 JDK.
 > The code it generates also requires the 1.6 JDK.
 > 
 > What does this mean?
 > 
 > One shouldn't assume that I know anything but I don't believe there is
 > any good reason why the compiler shouldn't execute with the 1.5 JDK or
 > gij for that matter.  I don't believe the JVM specification has changed.
 > It appears, though, that it's going to take more work than just making
 > changes similar to the ones Tom told me he made to the eclipse compiler
 > code to fit it into gcj.
 > 
 > I will proceed to get it to execute with gij.  Any tips or advice are
 > welcome.

http://developer.classpath.org/pipermail/classpath/2006-November/001647.html

Andrew.