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rust: Refactor the build target to allow the use of builtin targets

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Eventually we want all architectures to be using the target as defined
by rustc. However currently some architectures can't do that and are
using the target.json specification. This puts in place the foundation
to allow the use of the builtin target definition or a target.json
specification.

Signed-off-by: Jamie Cunliffe <Jamie.Cunliffe@arm.com>
Acked-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20231020155056.3495121-2-Jamie.Cunliffe@arm.com
[catalin.marinas@arm.com: squashed loongarch ifneq fix from WANG Rui]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Jamie Cunliffe
2023-10-20 16:50:55 +01:00
committed by Catalin Marinas
parent 54be6c6c5a
commit f82811e22b
5 changed files with 9 additions and 3 deletions
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4
scripts/Makefile
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@@ -11,12 +11,14 @@ hostprogs-always-$(CONFIG_MODULE_SIG_FORMAT) += sign-file
hostprogs-always-$(CONFIG_SYSTEM_EXTRA_CERTIFICATE) += insert-sys-cert
hostprogs-always-$(CONFIG_RUST_KERNEL_DOCTESTS) += rustdoc_test_builder
hostprogs-always-$(CONFIG_RUST_KERNEL_DOCTESTS) += rustdoc_test_gen
always-$(CONFIG_RUST) += target.json
ifneq ($(or $(CONFIG_X86_64),$(CONFIG_LOONGARCH)),)
always-$(CONFIG_RUST) += target.json
filechk_rust_target = $< < include/config/auto.conf
$(obj)/target.json: scripts/generate_rust_target include/config/auto.conf FORCE
$(call filechk,rust_target)
endif
hostprogs += generate_rust_target
generate_rust_target-rust := y