luajit

#!/bin/bash
dirname=$(dirname $0)
pushd $dirname 1>/dev/null 2>/dev/null && absname=$(pwd) && popd 1>/dev/null 2>/dev/null 

# uname <option>, where <option>:
# -s, --kernel-name        print the kernel name
# -n, --nodename           print the network node hostname
# -r, --kernel-release     print the kernel release
# -v, --kernel-version     print the kernel version
# -m, --machine            print the machine hardware name
# -p, --processor          print the processor type or "unknown"
# -i, --hardware-platform  print the hardware platform or "unknown" - does not work on OSX
# -o, --operating-system   print the operating system - does not work on OSX

OS=Unknown
ARCH=Unknown
SO=.Unknown

# Find ARCH by machine
case `uname -m` in
    x86_64) ARCH=x64;;
    i686)   ARCH=x86;;
    i386)   ARCH=x86;;
    arm*)   ARCH=arm;;
esac

# Find OS by kernel name
case `uname -s` in
    Linux)
	OS=Linux
	OSARCH=$OS/$ARCH
	SO=.so
	# this should go away at some point (-Wl,-rpath $ORIGN)
	export LD_LIBRARY_PATH=$absname/:$absname/bin/$OSARCH/:$LD_LIBRARY_PATH
	;;
    Darwin)
	OS=OSX
	OSARCH=$OS # universal
	SO=.dylib
	# this should go away at some point (install_name_tool with @rpath and @executable path)
	export DYLD_LIBRARY_PATH=$absname/bin/$OSARCH:$DYLD_LIBRARY_PATH
	;;
    *)
	case `uname -o` in
	    Cygwin)
		OS=Windows
		SO=.dll
		;;
	esac
esac

export LUA_PATH="$absname/?.lua;$LUA_PATH"
"$dirname/bin/$OSARCH/luajit" "$@"