This is a fork of the Github repo for Lua customized to compile with Cosmopolitan libc. Meant for experimental purposes only. This repo results in 340kb portable Lua executable, the Cosmopolitan monorepo now compiles a slimmer executable.

The include folder contains dummy headers corresponding to the C stdlib. The libcosmo folder contains the required files for compiling an executable using Cosmopolitan on Linux.

Compiled on:

# Debian Buster (Linux 4.19.0-12-amd64)
$ gcc --version
gcc (Debian 8.3.0-6) 8.3.0
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ clang --version
Debian clang version 11.0.1-++20201103062553+ef4ffcafbb2-1~exp1~20201103053214.125
Target: x86_64-pc-linux-gnu
Thread model: posix

makefile runs without error (a couple of warnings) to produce lua.exe. The compiled lua.exe runs on Linux and Windows 10. clang produces a slightly larger binary than gcc.

The compiled lua.exe passes all tests in the testes directory. Run all after compilation to check it passes all tests.

1. Compile the latest commit in the master branch of Cosmopolitan.
2. Copy cosmopolitan.h (and crt.o, ape.o, ape.lds, cosmopolitan.a) to the libcosmo/ folder.
3. Run make
4. Run lua.exe

cd libcosmo/
# use the latest version
wget https://justine.lol/cosmopolitan/cosmopolitan-amalgamation-0.2.zip
unzip cosmopolitan-amalgamation-0.2.zip
# copy the compiled versions from the latest commit in master branch
cd ../
make -j4
./lua.exe