mozjs_sys 0.51.4

System crate for the Mozilla SpiderMonkey JavaScript engine.
Documentation

This repository contains Rust bindings for SpiderMonkey for use with Servo.

The bindings are to the raw SpiderMonkey API, higher-level bindings are in the rust-mozjs repository.

Building

Under Linux:

Install Clang (at least version 3.9), for example in a Debian-based Linux:

sudo apt-get install clang-6.0

If you have more than one version of Clang installed, you can set the LIBCLANG_PATH environment variable, for example:

export LIBCLANG_PATH=/usr/lib/clang/4.0/lib

Under Windows:

  1. Follow the directions at https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Build_Instructions/Windows_Prerequisites

  2. Open up a shell configured to use Visual Studio. This could be the one included with Visual Studio (e.g. Visual Studio 2017 / X64 Native Tools Command Prompt for VS 2017) or a shell in which you have run

"c:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\VC\Auxiliary\Build\vcvars64.bat"
  1. Set the MOZTOOLS_PATH environment variable to point to the tools from the Mozilla Build Package:
set MOZTOOLS_PATH=C:\mozilla-build\msys\bin;C:\mozilla-build\mozmake;C:\mozilla-build\yasm
  1. Download and install Clang for Windows (64 bit) from https://releases.llvm.org/download.html and set the LIBCLANG_PATH environment variable to its lib directory:
set LIBCLANG_PATH=C:\Program Files\LLVM\lib

You can now build and test the crate using cargo:

cargo build
cargo test
cargo build --features debugmozjs
cargo test --features debugmozjs

Upgrading

In order to upgrade to a new version of SpiderMonkey:

  1. Download the tarball corresponding to the desired mozilla-central commit from treeherder's SM-tc(pkg) job.
  2. Update etc/COMMIT.
  3. Run python3 ./etc/update.py path/to/tarball.