https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91879
--- Comment #27 from Stas Sergeev <stsp at users dot sourceforge.net> --- (In reply to jos...@codesourcery.com from comment #26) > On Thu, 3 Oct 2019, stsp at users dot sourceforge.net wrote: > > > Ah, I am starting to understand. > > So basically you mean something like this: > > --with-sysroot=$prefix/$target --with-build-sysroot=$DESTDIR$prefix/$target > > --with-prefix=/ > > It's --with-native-system-header-dir=/include not --with-prefix=/, but > that's the idea. Ah, yes, indeed. So can I assume that in the -isystem path and -B path, the sysroot part will be swapped with the build_sysroot during build? If so, then I would finally understand your sysroot suggestion. But there are still 2 more suggestions, yours and mine, and I am not sure what is to do with them. I think your suggestion is to add something like --with-build-time-prefix to be able to specify the alternative location of headers and libs for non-sysroot build. Mine is to add --with-build-time-compiler=dir. I think we can have both, and I can try to implement mine (--with-build-time-compiler) if you think this is acceptable (i.e. the _possibility_ to add an extra build stage is acceptable).
