Allow rust to build for baremetal targets by generating the proper target triple, follow the format specified by rusts Triple [1], that is:
<arch>-<vendor>-<os>-<abi> This is done automatically based on both TARGET_OS and TCLIBC. For example, a riscv64 baremetal target triple would look like this: riscv64gc-poky-none-elf matching rusts own target triple for riscv64 according to platform-support [2] [1] https://docs.rs/target-lexicon/latest/target_lexicon/struct.Triple.html [2] https://doc.rust-lang.org/stable/rustc/platform-support.html Signed-off-by: Alejandro Enedino Hernandez Samaniego <alejan...@enedino.org> --- meta/classes-recipe/rust-common.bbclass | 6 ++++++ meta/classes-recipe/rust-target-config.bbclass | 5 ++++- 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/meta/classes-recipe/rust-common.bbclass b/meta/classes-recipe/rust-common.bbclass index 3338de7502..0f72e45e8c 100644 --- a/meta/classes-recipe/rust-common.bbclass +++ b/meta/classes-recipe/rust-common.bbclass @@ -66,6 +66,12 @@ def rust_base_triple(d, thing): elif "musl" in os: libc = "-musl" os = "linux" + elif "elf" in os: + libc = "-elf" + os = "none" + elif "eabi" in os: + libc = "-eabi" + os = "none" return arch + vendor + '-' + os + libc diff --git a/meta/classes-recipe/rust-target-config.bbclass b/meta/classes-recipe/rust-target-config.bbclass index 2710b4325d..7fd7128bcf 100644 --- a/meta/classes-recipe/rust-target-config.bbclass +++ b/meta/classes-recipe/rust-target-config.bbclass @@ -355,7 +355,10 @@ def rust_gen_target(d, thing, wd, arch): tspec['target-c-int-width'] = d.getVarFlag('TARGET_C_INT_WIDTH', arch_abi) tspec['target-endian'] = d.getVarFlag('TARGET_ENDIAN', arch_abi) tspec['arch'] = arch_to_rust_target_arch(rust_arch) - tspec['os'] = "linux" + if "baremetal" in d.getVar('TCLIBC'): + tspec['os'] = "none" + else: + tspec['os'] = "linux" if "musl" in tspec['llvm-target']: tspec['env'] = "musl" else: -- 2.34.1
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