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CONFIG_DEBUG_INFO_DWARF5: Generate DWARF Version 5 debuginfo

General informations

The Linux kernel configuration item CONFIG_DEBUG_INFO_DWARF5:

Help text

Generate DWARF v5 debug info. Requires binutils 2.35.2, gcc 5.0+ (gcc 5.0+ accepts the -gdwarf-5 flag but only had partial support for some draft features until 7.0), and gdb 8.0+.

Changes to the structure of debug info in Version 5 allow for around 15-18% savings in resulting image and debug info section sizes as compared to DWARF Version 4. DWARF Version 5 standardizes previous extensions such as accelerators for symbol indexing and the format for fission (.dwo/.dwp) files. Users may not want to select this config if they rely on tooling that has not yet been updated to support DWARF Version 5.



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