This is an Ulam spiral generator for Linux written in x86-64 assembly.
pimlu@pimlu-vb ~/Documents/ulam $ ./dist/ulam 5 5
width is: 5
height is: 5
#...#
.#.#.
#.o##
.#...
..#..
Chances are all you need to do is run make. This should build on any system that has GNU binutils installed (most well-known Linux distros) or a compatible alternative.
The binary will be located at dist/ulam. It takes two arguments, the width and the height.
To build with debugging symbols, run make debug. You may have to make clean first, if it's already been built without debug.
To make a small binary with stripped symbols, run make strip after cleaning. There is a strip branch which has some unnecessary bits removed to see how small it can be made. On my machine, it builds to 1088 bytes. I'm sure it could be brought down to 1024 bytes.