3d5b1eeb75
In #95604 the compiler started generating a temporary symbols.o which is added to the linker invocation. This object file has an `e_flags` which may be invalid for 32-bit MIPS targets. Even though symbols.o doesn't contain code, linking with [lld fails](https://github.com/llvm/llvm-project/blob/main/lld/ELF/Arch/MipsArchTree.cpp#L79) with ``` rust-lld: error: foo-cgu.0.rcgu.o: ABI 'o32' is incompatible with target ABI 'n64' ``` because it omits the ABI bits (EF_MIPS_ABI_O32) so lld assumes it's using the N64 ABI. This breaks linking on nightly for the out-of-tree [psx target](https://github.com/ayrtonm/psx-sdk-rs/issues/9), the builtin mipsel-sony-psp target (cc @overdrivenpotato) and any other 32-bit MIPS target using lld. This PR sets the ABI in `e_flags` to O32 since that's the only ABI for 32-bit MIPS that LLVM supports. It also sets other `e_flags` bits based on the target. I had to bump the object crate version since some of these constants were [added recently](https://github.com/gimli-rs/object/pull/433). I'm not sure if this PR needs a test, but I can confirm that it fixes the linking issue on both targets I mentioned.
47 lines
1.4 KiB
TOML
47 lines
1.4 KiB
TOML
[package]
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name = "rustc_codegen_ssa"
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version = "0.0.0"
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edition = "2021"
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[lib]
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test = false
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[dependencies]
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bitflags = "1.2.1"
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cc = "1.0.69"
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itertools = "0.10.1"
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tracing = "0.1"
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libc = "0.2.50"
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jobserver = "0.1.22"
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tempfile = "3.2"
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thorin-dwp = "0.2"
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pathdiff = "0.2.0"
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snap = "1"
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smallvec = { version = "1.6.1", features = ["union", "may_dangle"] }
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regex = "1.4"
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rustc_serialize = { path = "../rustc_serialize" }
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rustc_arena = { path = "../rustc_arena" }
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rustc_ast = { path = "../rustc_ast" }
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rustc_span = { path = "../rustc_span" }
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rustc_middle = { path = "../rustc_middle" }
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rustc_apfloat = { path = "../rustc_apfloat" }
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rustc_attr = { path = "../rustc_attr" }
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rustc_symbol_mangling = { path = "../rustc_symbol_mangling" }
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rustc_data_structures = { path = "../rustc_data_structures" }
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rustc_errors = { path = "../rustc_errors" }
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rustc_fs_util = { path = "../rustc_fs_util" }
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rustc_hir = { path = "../rustc_hir" }
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rustc_incremental = { path = "../rustc_incremental" }
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rustc_index = { path = "../rustc_index" }
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rustc_macros = { path = "../rustc_macros" }
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rustc_metadata = { path = "../rustc_metadata" }
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rustc_query_system = { path = "../rustc_query_system" }
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rustc_target = { path = "../rustc_target" }
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rustc_session = { path = "../rustc_session" }
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[dependencies.object]
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version = "0.28.4"
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default-features = false
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features = ["read_core", "elf", "macho", "pe", "unaligned", "archive", "write"]
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