Hi, Thanks to Tim Hayman (my boss =), Crosstool-0.37 can now build a cross-compiling GCJ using GCC 4.0.x source and an older GCC core (the GCC core is used to build glibc which is required for the actual GCC build when you select more complex features such as C++ and Java). This is of course tested on MPC8xx our favourite platform at Nanometrics. David