FatELF: Universal Binaries for Linux (2015)

FatELF lets you pack binaries into one file, seperated by OS ABI, OS ABI version, byte order and word size, and most importantly, CPU architecture. FatELF is a file format that embeds multiple ELF binaries for different architectures into one file. It’s up to the system to handle dynamic loading like it always does, once it finds the ELF record it wants to load inside a FatELF file.

Source: icculus.org