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Since kernel v7.0, perf uses `rustc --version` to know whether or not rust is available. If rust is installed on the host, this `rustc --version` works fine but then the perf build fails with following error (on aarch64) if host-rust isn't selected: rustc /home/bastien/embedded-linux-imx93-frdm-labs/integration/buildroot/output/build/linux-7.1.3/tools/perf/tests/workloads/code_with_type.a error[E0463]: can't find crate for `std` | = note: the `aarch64-unknown-linux-gnu` target may not be installed = help: consider downloading the target with `rustup target add aarch64-unknown-linux-gnu` error: aborting due to 1 previous error In perf, rust is only used by one file of the test suite (tools/perf/tests/workloads/code_with_type.rs) so we can safely disable it. Always use the NO_RUST flag to build perf. Signed-off-by: Bastien Curutchet <bastien.curutchet@bootlin.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at https://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches