On Thu, Oct 10, 2024 at 12:55 PM Miguel Ojeda <miguel.ojeda.sandonis@xxxxxxxxx> wrote: > > On Thu, Oct 10, 2024 at 11:38 AM Alice Ryhl <aliceryhl@xxxxxxxxxx> wrote: > > > > From: Gary Guo <gary@xxxxxxxxxxx> > > > > Each version of Rust supports a range of LLVM versions. There are cases where > > we want to gate a config on the LLVM version instead of the Rust version. > > Normalized cfi integer tags are one example [1]. > > > > For consistency with cc-version and ld-version, the new version number is added > > to the existing rustc-version script, rather than being added to a new script. > > > > The invocation of rustc-version is being moved from init/Kconfig to > > scripts/Kconfig.include to avoid invoking rustc-version.sh twice and for > > consistency with cc-version. > > > > Link: https://lore.kernel.org/all/20240925-cfi-norm-kasan-fix-v1-1-0328985cdf33@xxxxxxxxxx/ [1] > > Signed-off-by: Gary Guo <gary@xxxxxxxxxxx> > > Alice: when I apply this, I will need to add your Signed-off-by here > (i.e. when handling patches from others, you need to add your SoB > too). > > > +if output=$("$@" --version --verbose 2>/dev/null | grep LLVM); then > > + set -- $output > > + rustc_llvm_version=$(get_llvm_canonical_version $3) > > +else > > + echo 0 0 > > + exit 1 > > +fi > > I guess if we don't find "LLVM" in the output, something weird is > going on, so I guess it is reasonable not printing either here. > Although, in principle, we could preserve information and print at > least the `$rustc` one. > > Anyway, we may need to rethink this when we start supporting e.g. the > GCC backend, so I think it is fine as it is. I guess we can just do rustc_llvm_version=0 in that case?
