It lets debugging tools produce better stack traces, including local
function names, without incurring the space overhead of full debuginfo.
The feature was originally developed for Fedora:
but nowadays it is widely supported in the ecosystem, including in gdb
and elfutils (and therefore also in tools which use elfutils, such as
systemd-coredump).
This patch adds an optional extra step in package.bbclass to inject
minidebuginfo while stripping and splitting out debuginfo. It can be
enabled by setting PACKAGE_MINIDEBUGINFO=1. In my testing, this
increases the size of resulting binaries by roughly 5%.
The code for producing and re-injecting the minidebuginfo is my own
Python implementation but corresponds directly to the shell
implementation that RPM uses for doing the same:
