zig build for mosquitto

Cross compile mosquitto using zig build (tested with ziglang 0.15.1).

• produce static executables
• support for TLS (with an option to disable it if it is not needed)
• bridge enabled
• no websocket support
• no systemd support (e.g. SDNotify isn't enabled)

Build Pre-requisites

• ziglang 0.15.1
• just >= 1.15.0
• nfpm (to build the linux packages)

Note

The mosquitto source code is downloaded automatically using the ziglang build system. You can manually download the source code yourself by downloading the url defined in the corresponding the build.zig.zon.

Building

1. Clone the project

   git clone https://github.com/thin-edge/zig-mosquitto
   cd zig-mosquitto

2. Build all targets

   just build-all

   Or specify the VERSION environment variable.

   VERSION=2.0.22 just build-all

   If you don't want to include TLS, then you can run:

   just build-notls-all

3. Use the build linux packages under the dist/ folder

   ls -l build/{VERSION}/dist/
   
   # Using DNF (Fedora, RHEL, AmazonLinux)
   dnf install tedge-mosquitto*.rpm
   
   # Using Debian/Ubuntu
   apt-get install tedge-mosquitto*.deb

Building a single target

If you don't want to build for all of the targets, then you can build using

The compiled mosquitto binary will be created under ./zig-out/mosquitto, however it will only be the binary from the last build.

With TLS

just build x86_64-linux-musl amd64

just build aarch64-linux-musl arm64

just build arm-linux-musleabihf arm7

just build arm-linux-musleabi arm5

just build riscv64-linux-musl riscv64

Without TLS

just build-notls x86_64-linux-musl amd64

just build-notls aarch64-linux-musl arm64

just build-notls arm-linux-musleabihf arm7

just build-notls arm-linux-musleabi arm5

just build-notls riscv64-linux-musl riscv64

TODO

The following items are still yet to be addressed/fixed:

• Support for other init systems like OpenRC, SysVInit, s6-overlay