SPNU118Y September 1995 – February 2020
The --compress_dwarf option aggressively reduces the size of DWARF information by eliminating duplicate information from input object files.
For ELF object files, which are used with EABI, the --compress_dwarf option eliminates duplicate information that could not be removed through the use of ELF COMDAT groups. (See the ELF specification for information on COMDAT groups.)