Dear gcc'ers : I have an older and slower machine to bootstrap GCC 5.4.x with and I would prefer that my first build of anything from the 5.x tree be a release quality compiler. I am bootstrapping with gcc 4.9.2 which has served very well for a while now. So I see the mysterious configure option --enable-stage1-checking with no mention of a stage2 anywhere. A nice bug report exists from a while ago which helps : https://gcc.gnu.org/bugzilla/show_bug.cgi?id=31963 So what are the options to --enable-stageX-checking for some X wherein I get a reasonable and not obscenely long build time? To get a "release" quality compiler output I mean. Also, I am fine with a build time of seven to twenty days if needed. The output quality is what matters for a full bootstrap. Dennis