On Sun, Jul 23, 2023 at 11:21 PM Miguel Ojeda <ojeda@xxxxxxxxxx> wrote: > > `rustc` outputs by default the temporary files (i.e. the ones saved > by `-Csave-temps`, such as `*.rcgu*` files) in the current working > directory when `-o` and `--out-dir` are not given (even if > `--emit=x=path` is given, i.e. it does not use those for temporaries). > > Since out-of-tree modules are compiled from the `linux` tree, > `rustc` then tries to create them there, which may not be accessible. > > Thus pass `--out-dir` explicitly, even if it is just for the temporary > files. > > Similarly, do so for Rust host programs too. > > Reported-by: Raphael Nestler <raphael.nestler@xxxxxxxxx> > Closes: https://github.com/Rust-for-Linux/linux/issues/1015 > Reported-by: Andrea Righi <andrea.righi@xxxxxxxxxxxxx> > Tested-by: Raphael Nestler <raphael.nestler@xxxxxxxxx> # non-hostprogs > Tested-by: Andrea Righi <andrea.righi@xxxxxxxxxxxxx> # non-hostprogs > Fixes: 295d8398c67e ("kbuild: specify output names separately for each emission type from rustc") > Cc: stable@xxxxxxxxxxxxxxx > Signed-off-by: Miguel Ojeda <ojeda@xxxxxxxxxx> > --- > v2: > - Add fix for host programs too (Masahiro). This is now available in the mainline. df01b7cfcef08bf3fdcac2909d0e1910781d6bfd -- Best Regards Masahiro Yamada
