I'm not sure this will work, because libstdc++ depends on a newer libc6. Is there a way to say... compile withe the old lib instead the new. Both are installed on the new system. -- View this message in context: http://www.nabble.com/How-can-I-compile-on-new-system-und-run-it-on-old-one---t1797153.html#a4916905 Sent from the gcc - Help forum at Nabble.com.