On Thu, May 14, 2020 at 11:15 AM William Tambe via Gcc-help <gcc-help@xxxxxxxxxxx> wrote: > The following error is seen when building c++ . > configure: error: No support for this host/target combination. > > Any idea which file need to be edited to support our port when > libstdc++ is being built ? A simple grep command "grep 'host/target' *" would point you at the crossconfig.m4 file in libstdc++. Also note that this defines GLIBCXX_CROSSCONFIG which is called from configure.ac, and there is a with_newlib check there. So either you are using newlib and provided --with-newlib, or you need explicit support in the crossconfig.m4 file. Jim
