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https://github.com/rsdoiel/mlj
This is a copy of MLj source obtained from http://www.dcs.ed.ac.uk/home/mlj/index.html.
https://github.com/rsdoiel/mlj
Last synced: 14 days ago
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This is a copy of MLj source obtained from http://www.dcs.ed.ac.uk/home/mlj/index.html.
- Host: GitHub
- URL: https://github.com/rsdoiel/mlj
- Owner: rsdoiel
- License: gpl-2.0
- Created: 2015-07-23T22:40:36.000Z (over 9 years ago)
- Default Branch: master
- Last Pushed: 2015-07-24T00:06:21.000Z (over 9 years ago)
- Last Synced: 2024-04-15T02:54:43.881Z (9 months ago)
- Language: Standard ML
- Size: 1.56 MB
- Stars: 3
- Watchers: 3
- Forks: 2
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# MLj
MLj is a compiler for Standard ML which compiles to Java bytecodes. It was
originally developed by Nick Benton, Andrew Kennedy and George Russell of
Persimmon IT, Inc's Cambridge research group and is now available from the
[MLj home page](http://www.dcs.ed.ac.uk/home/mlj/index.html), which is managed
by Ian Stark at the University of Edinburgh.
It seems to been an active project back in 1998 and hosted by Ian Stark since
2002 or so. I downloaded this [source copy](http://www.dcs.ed.ac.uk/home/mlj/dist/index.html)
on 2015-07-23.
## Log of my changes
This is my in-progress notes to get MLj to compile from source. Currently it
does not generate a viable MLj compiler.
### Prep work
1. Installed a working version of [smlnj](http://www.smlnj.org/)
+ On a Mac this is easy to do with Mac Ports (e.g. sudo port install smlnj)
2. Make sure you have a current version of Java (I am using 1.8.0 as of typing this readme)
3. Make a directory where the MLj compiler will get installed
4. Set a bunch of environment variables that seemed to be required
On my Mac I did the following
```
# Install SML/NJ
sudo port install smlnj
# Check that Java is already installed and a recent version
java -version
# Make a directory for mlj compiler
mkdir -p $HOME/mlj/bin
# Tell MLj where it should be installed
export MLJBIN=$HOME/mlj/bin
# Tell MLj where to find my Java system libraries
export BOOTCLASSPATH=$CLASSPATH/lib
# Tell MLj where my SML/NJ libraries are located
export CM_PATH=/opt/local/share/smlnj/lib
# tell MLj Which $HEAP_SUFFIX to use (i.e. in $CM_PATH/../bin/.run/)
export HEAP_SUFFIX=x86-darwin
```
## Cloning and trying to compile
1. Clone my copy of the source form [github.com/rsdoiel/MLj](https://github.com/rsdoiel/MLj)
2. Change into the mlj sub directory to start working with the raw source.
3. Run the "build" script and try to build MLj
```
# clone the repo
git clone https://github.com/rsdoiel/MLj.git
cd MLj/mlj
./build
```
At this stage compilation generates $MLJBIN/run.x86-darwin but also indicates
and error.
```
stdIn:12.15-12.26 Error: unbound variable or constructor: set_root in path CM.set_root
```
Create a helloworld.sml file.
```
print "Hello World!\n";
```
Trying to run `$MLJBIN/run.x86-darwin helloworld.sml` fails with
```
run.x86-darwin: Fatal error -- no in-core heap image found
```
This makes me think I am still missing something in my compiler compile.
### Notes to follow up on problem
+ [Re: Problems porting from old Compilation Manager](http://comments.gmane.org/gmane.comp.lang.sml.smlnj/657) <-- looks most promising
+ This link to the tar.gz file is broken (not surprising given it is from 2009)
+ [Building MLj - The University of Edinburgh](http://www.dcs.ed.ac.uk/home/mlj/mailarc/msg00002.html)
+ [Release of version 0.4 of the ULTRA type error slicer for SML](http://blog.gmane.org/gmane.comp.lang.sml.smlnj/month=20091101)
+ [Standard ML of New Jersey](http://sourceforge.net/p/smlnj/mailman/message/24057855/)
+ [Notes on Programming Standard ML of New Jersey](http://www.cs.cornell.edu/riccardo/prog-smlnj/notes-011001.pdf) <-- this is a PDF
+ [Nick Benton's page on MLj](http://research.microsoft.com/en-us/um/people/nick/mlj.htm)