multiple rlib candidates for compiler_builtins found

[AthiraRamakrishna]

Hi

I'm trying to build lc3-codec crate example sns_decode, for a custom target of riscv32, using cargo build -Zbuild-std=core and added compiler_builtins as dependency in the Cargo.toml

I get the error

@tgross35 Any hint on this? it is similar to the issue #334

Thanks!

[bjorn3]

Try -Zbuild-std=core,compiler_builtins and removing the explicit dependency on the compiler_builtins crate in Cargo.toml.

[AthiraRamakrishna]

If I remove the explicit dependency from Cargo.toml and use -Zbuild-std=core,compiler_builtins then i get again rust-lld: error: undefined symbol: memcmp.

[bjorn3]

Try also passing -Zbuild-std-features=compiler-builtins-mem to cargo. Or alternatively you can add -none to your target name to make compiler-builtins assume that your target is missing libc and automatically enable the mem feature.

[AthiraRamakrishna]

This worked, thank you!