I hereby challenge everyone to write Rust programs on their platform of choice that print out "Hello world!" with a newline to the console with a binary that is as small as possible.

Rules:

• All Rust libraries must be statically linked (including libstd and friends).
• Aside from Rust libraries, you can only depend on libc and system libraries.
• No assembly, not even inline assembly.
• All code must be Rust.

Windows

In the windows directory.

With x86_64-pc-windows-msvc the following command creates a 1,536 byte .exe: cargo rustc --release -- -Clink-args="/ENTRY:entry_point /ALIGN:16"

This entry has the advantage of using nothing more than stable Rust and still having access to all of libstd.

Something else

In the linux directory.

I dunno.