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Auto merge of #135085 - knickish:m68k_unknown_none, r=workingjubilee

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add m68k-unknown-none-elf target

r? `@workingjubilee`

The existing `m68k-unknown-linux-gnu` target builds `std` by default, requires atomics, and has a base cpu with an fpu. A smaller/more embedded target is desirable both to have a baseline target for the ISA, as well to make debugging easier for working on the llvm backend. Currently this target is using the `M68010` as the minimum CPU due, but as missing features are merged into the `M68k` llvm backend I am hoping to lower this further.

I have been able to build very small crates using a toolchain built against this target (together with a later version of `object`) using the configuration described in the target platform-support documentation, although getting anything of substantial complexity to build quickly hits errors in the llvm backend
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bors
2025-01-06 05:23:55 +00:00
parent 56f9e6f935 f985a37c57
commit fd98df8f14
7 changed files with 148 additions and 0 deletions
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compiler/rustc_target/src/spec/mod.rs
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@@ -1656,6 +1656,7 @@ supported_targets! {
("loongarch64-unknown-linux-gnu", loongarch64_unknown_linux_gnu),
("loongarch64-unknown-linux-musl", loongarch64_unknown_linux_musl),
("m68k-unknown-linux-gnu", m68k_unknown_linux_gnu),
("m68k-unknown-none-elf", m68k_unknown_none_elf),
("csky-unknown-linux-gnuabiv2", csky_unknown_linux_gnuabiv2),
("csky-unknown-linux-gnuabiv2hf", csky_unknown_linux_gnuabiv2hf),
("mips-unknown-linux-gnu", mips_unknown_linux_gnu),