Error during toolchain installation. Please report this to the script maintainers. A useful report would contain information such as the tool being built/"make"d when the error occurred and the relevant lines of console output or logfile relating to the error.It also helps to include information about your the host OS and version of GCC. A goog place to look for solutions,and report any bugs,is at the OpenRISC project's bug tracker on OpenCores.org: http://opencores.org/openrisc,bugtracker