This is the main development repository for SML/NJ. We are currently reworking many components of the system, so it is not very stable. For most uses, we recommend the legacy version of the system.

Currently, only Intel-based Macs are known to work.

• Building From Source
• Recompiling the System

The process for building the system from source code has changed.

1. clone the repository

   git clone git@github.com:smlnj/smlnj.git

2. cd to the cloned repository and get the boot files

   cd smlnj
   curl -O https://smlnj.org/dist/working/$VERSION/boot.amd64-unix.tgz

   where $VERSION is the version that you are building (e.g., 2022.1).

   We plan to incorporate this step into the build.sh script in the near future.

3. build the installation

   ./build.sh

   Use build.sh -h to see the list of options accepted by the build script.

   As before, you can modify the config/targets file to add/remove components from the build.

After successful running of the build.sh script, bin/sml will be the interactive system.

The process of recompiling the system from source code is fairly similar to before.

1. Switch to the system directory and run the cmb-make command:

   cd system
   ./cmb-make ../bin/sml

   The "../bin/sml" argument is optional; if omitted, then the sml command in the user's PATH will be used. Once can also specify a different path to an sml command, when appropriate.

2. Bootstrap the system

   ./makeml

3. Install the system

   ./installml -clean -boot

   The -boot option is new (and optional); it causes the existing boot files in the root directory (e.g., boot.amd64-unix.tgz) to be replaced by the files generated by the cmb-make command.

4. Rebuild the libraries and tools

   cd ..
   ./build.sh