Hello everyone, I'm trying to build the example Rust kernel modules from kernel source [1] on Arch Linux. I use a simple Makefile to build them out of tree: obj-m += rust_minimal.o all: make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules However, the build can't find some Rust metadata: make -C /lib/modules/6.8.7-arch1-1/build M=/home/lukas/Downloads/linux-6.8.7-arch1/samples/rust modules make[1]: Entering directory '/usr/lib/modules/6.8.7-arch1-1/build' RUSTC [M] /home/lukas/Downloads/linux-6.8.7-arch1/samples/rust/rust_minimal.o error: target file "./scripts/target.json" does not exist Indeed, there is no target.json in /lib/modules/$(uname -r)/build/scripts/, so I thought, maybe I need to use a special kernel with Rust support. But building linux-rust from the AUR fails with the same error message: Installing Rust files... install: cannot stat 'scripts/target.json': No such file or directory ==> ERROR: A failure occurred in package_linux-rust-headers(). Aborting... And even the default kernel is passing the Linux kernel Rust support check script as suggested in the kernel docs [2]: lukas@Lukas-AMD:rust$ make -C /lib/modules/$(uname -r)/build rustavailable make: Entering directory '/usr/lib/modules/6.8.7-arch1-1/build' Rust is available! make: Leaving directory '/usr/lib/modules/6.8.7-arch1-1/build' So what am I doing wrong? Is the Arch Linux kernel currently missing Rust metadata required for Rust support, like target.json? Or am I missing some important prerequisites here? Any suggestions welcome! Thanks, lukaro [1] https://github.com/Rust-for-Linux/linux/tree/rust-next/samples/rust [2] https://docs.kernel.org/6.8/rust/quick-start.html