5344 byte statically linked hello world in C: $ musl-gcc -static -Os -s -o hello hello.c $ ls -la hello -rwxrwxr-x. 1 sebastian sebastian 5344 Sep

5344 byte statically linked hello world in C: $ musl-gcc -static -Os -s -o hello hello.c $ ls -la hello -rwxrwxr-x. 1 sebastian sebastian 5344 Sep 30 06:22 hello $ ldd hello not a dynamic executable $ ./hello Hello, World 384 Byte hello world using NASM and ld on linux/amd64: BITS 64 global _start %define SYS_write 1 %define SYS_exit 60 %define STDOUT_FILENO 1 section .text _start: call after strHello: db 'Hello, World!',10 lenHello equ $-strHello after: pop rsi mov rdx, lenHello mov rax, SYS_write mov rdi, STDOUT_FILENO syscall mov rax, SYS_exit xor rdi, rdi syscall Most of the size overhead in the latter example comes from the ELF header, so by paying a bit more attention to the linker scripts, or just inlining a small ELF header with db in the asm file, it would be even smaller. Just for size comparison. I am sure that it's quite possible to generate small Rust binaries as well.