search

feeley / etos

Erlang to Scheme compiler
36 stars 1 forks source link

readme

ETOS is an Erlang to Scheme compiler designed at the Universite de Montreal. The Scheme code it generates is compiled to native code with the Gambit Scheme compiler, which allows it to achieve good performance.

Here are some papers and presentations on ETOS:

  1. INSTALLING

Before installing ETOS, you must install the Gambit Scheme compiler (http://gambit.iro.umontreal.ca/). ETOS v2.4 has been tested with Gambit v4.6.5 (older versions of Gambit will probably work too, but don't go too far back).

Then build ETOS with the command

% make install

This will place the following files in the bin/ directory:

etos the ETOS compiler

estart the program loader

rt-gambit.scm a Scheme file with macro definitions required by the Gambit Scheme compiler to compile the Scheme files produced by ETOS

If you wish to install these files somewhere else, then change the definition of INSTALL_DIR in the Makefile before the "make install".

Note that on some platforms it can take a long time to compile etos. On Mac OS X with LLVM gcc, it takes roughly half an hour on a fast machine (with GNU gcc it takes only a few minutes).

  1. USAGE

Erlang files, with extension .erl, can be compiled by invoking etos:

% bin/etos hw.erl

By default this will produce the files hw.scm, the Scheme code generated, and hw.o1 (or hw.o2, etc) which is the dynamically loadable object file produced from hw.scm by the Gambit Scheme compiler.

To execute the program, simply invoke estart with the name of the module, "hw" in this case:

% bin/estart hw "Hello World!"

You can get usage information on these programs with:

% bin/etos --help

or man pages with:

% man man/man1/etos.1 % man man/man1/estart.1

  1. BENCHMARKS

The benchmarks can be run with the command:

% make bench