Compiling JAuto

Clone the source code repository, or download a release to get a copy of the source code.

JAuto depends on Java development headers and libraries. Thus, a version of JDK (Java Development Kit) must be installed before compilation. Most people favor OpenJDK over Oracle Java since the latter has commercial-use restrictions. JAuto is written in C. It depends on libc and requires gcc to compile.

JAuto uses CMake build system.

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Building in Linux

In a typical Debian/Ubuntu environment, you can run the following apt commands to have all the build dependencies installed:

$ sudo apt update
$ sudo apt install default-jdk cmake gcc g++ make libc-dev

Once all the dependencies are set up, follow these steps to compile JAuto:

tar xfz jauto.tar.gz
mkdir jauto_build
cd jauto_build
cmake ../jauto
cmake --build .

The built executable is a dynamically loaded library. On Linux, you will get jauto.so.

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Building in Docker

To build using a Docker container, use the OpenJDK official image. Below is an example dockerfile to compile JAuto:

FROM openjdk:18-slim-bullseye AS jauto_build
USER root
RUN apt-get update && \
    apt-get install -y --no-install-recommends curl cmake gcc g++ make libc-dev && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/*
ENV JAUTO_VER=1.0.0
RUN curl -Lk https://github.com/heshiming/jauto/archive/refs/tags/v$JAUTO_VER.tar.gz -o /tmp/jauto.tar.gz
WORKDIR /tmp
RUN tar xfz jauto.tar.gz && \
    mkdir jauto_build && \
    cd jauto_build && \
    cmake ../jauto-$JAUTO_VER && \
    cmake --build .

You can then copy over jauto.so to another image, like this:

...
COPY --from=jauto_build /tmp/jauto_build/jauto.so /opt
...