How to compile the rust code?

[Mo-guan]

I cloned the latest main branch and tried to build and install ezkl from source using:

cargo install --locked --path .

However, the build fails with a compilation error in the svm-rs dependency:

error[E0428]: the name `SOLC_VERSION_0_8_31` is defined multiple times
   --> .../svm-rs-builds-*/out/builds.rs:199:1
...
error[E0428]: the name `SOLC_VERSION_0_8_31_CHECKSUM` is defined multiple times
   --> .../svm-rs-builds-*/out/builds.rs:200:1

I can reliably reproduce this issue in a clean Docker environment.

FROM ubuntu:22.04

RUN apt-get update && \
    apt-get install -y \
    git \
    curl \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

RUN curl https://sh.rustup.rs -sSf | sh -s -- -y && \
    echo "Rust installed successfully"

ENV PATH="/root/.cargo/bin:${PATH}"

WORKDIR /workspace
RUN git clone https://github.com/zkonduit/ezkl.git && \
    echo "ezkl repository cloned successfully"

WORKDIR /workspace/ezkl
RUN echo "Starting cargo build..." && \
    cargo install --locked --path . && \
    echo "ezkl installed successfully"

CMD ["/bin/bash"]

Build with

docker build -t ezkl:latest . --network host

Please let me know if there is a recommended workaround (e.g., pinning a specific svm-rs version). Thanks!

[ismaildasci]

this is a known issue with svm-rs duplicate definitions. the build script generates duplicate entries.

workarounds:

1. use specific commit that works:

git checkout <known-working-commit>

2. or install from crates.io instead of source:

cargo install ezkl

3. if you need latest features, try patching svm-rs in Cargo.toml:

[patch.crates-io]
svm-rs-builds = { git = "https://github.com/roynalnaruto/svm-rs", branch = "main" }

4. or use their docker image directly:

docker pull zkonduit/ezkl:latest

the error happens because solc 0.8.31 appears twice in the generated builds.rs file. this is upstream issue in svm-rs, not ezkl itself.

id suggest opening issue on ezkl repo to pin svm-rs version that works

[Mo-guan]

Thanks for the help! This solved my problem.