Elfhack

elfhack is a part of the Mozilla build system that optimizes relocations in compiled libraries. For more information about elfhack, see:

• bug 606145 - Compress/pack relocations in ELF binaries (elfhack)
• Improving libxul startup I/O by hacking the ELF format with elfhack
• Link-Time Optimization (LTO)
  • Update: Original blog post is gone, related blog post can be found in Web Archive: LTO with elfhack