gnu-getopt-multiplatform

Multiplatform builds of GNU getopt. Powered by Cosmopolitan Libc and the Chimp file format.

Runtime Dependencies

This getopt build is packaged as a Chimp polyglot script that works across platforms with minimal dependencies:

Windows

• cmd.exe (Windows Command Processor)
• powershell.exe (for version checking and base64 decoding fallback)

The downloaded artifact must be renamed to getopt.cmd to be run from a Windows shell. Alternatively, run it with Bash on Windows.

Unix/Linux/macOS

• Bourne shell (/bin/sh)
• Core utilities: uname, dd, chmod, exec, mkdir, tail, expr, exit
• Base64 decoder (tries in order):
  1. base64 command
  2. gbase64 command (GNU base64)
  3. openssl (excludes LibreSSL and MidnightBSD variants)
  4. python3 (versions 3.13, 3.12, 3.11, 3.10, 3.9)