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To encode and decode data the way we do in solidity I am using ethabi. It is working fine in compilation and testing but when I am running the command cargo contract build, it is giving me a build error.

Let me know if someone can help me on this issue or has any other way.

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  • Could you please provide more details regarding the problem? Some code snippet, build error logs, crate versions... Oct 5, 2022 at 9:43

1 Answer 1

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Add the following changes in your contact Cargo.toml

[dependencies]
ink = { version ="4.0.0-alpha.3", default-features = false }
ethabi = { path = "../ethabi", default-features = false } 
hex = { version = "0.4.3", default-features = false } 
scale = { package = "parity-scale-codec", version = "3.2.1", default-features = false, features = ["derive"] }
scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }


[profile.release] 
overflow-checks = false

Earlier it was as following

[dependencies]
ink = { version ="4.0.0-alpha.3", default-features = false }
ethabi = { path = "../ethabi" }
hex = { version = "0.4.3" }

scale = { package = "parity-scale-codec", version = "3.2.1", default-features = false, features = ["derive"] }
scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }
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  • You said the following changes but never posted the original Cargo.toml. Changes from what? Oct 9, 2022 at 20:11
  • 1
    Sounds like the answer is "remember to add default-features = false when importing ethabi and hex". Oct 10, 2022 at 10:13

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