Debuginfod

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Debuginfod is a service providing debug information over an HTTP API.

Installation

gdb automatically tries to download debug files if the DEBUGINFOD_URLS environment variable is present.

libelf, a dependency of gdb, ships with /etc/profile.d/debuginfod.sh and /etc/profile.d/debuginfod.csh scripts that set the variable on login, so there is no need to install additional packages.

You can optionally install the debuginfod package which provides the debuginfod-find(1) utility. This package is required for debuginfod support in delve.

Usage

Tip: See Debugging/Getting traces#Getting the trace for usage with gdb.

This article or section needs expansion.

Reason: Explain how DEBUGINFOD_URLS is set from /etc/debuginfod/*.urls. (Discuss in Talk:Debuginfod)

The tooling looks for debug symbols on the debuginfod servers specified in the DEBUGINFOD_URLS environment variable. The value is a string of a space separated URLs.

For example: 

DEBUGINFOD_URLS="https://debuginfod.archlinux.org/"
Tip: One can also use https://debuginfod.elfutils.org/ which works as a federated server and queries all available debuginfod servers.

See debuginfod-find(1) for usage.

Manual download

If one wants to manually retrieve the debug symbols for zstd, along with some source files, one can utilize debuginfod-find: 

$ debuginfod-find debuginfo /usr/bin/zstd
/home/user/.cache/debuginfod_client/70e1b456c5813658df6436a3deb71812e75a0267/debuginfo

$ debuginfod-find source /usr/bin/zstd /usr/src/debug/zstd-1.5.2/programs/fileio.c
/home/user/.cache/debuginfod_client/70e1b456c5813658df6436a3deb71812e75a0267/source##usr##src##debug##zstd-1.5.2##programs##fileio.c

Debugger support

Several debuggers support utilizing debuginfod to find debug symbol and source code listing.

Package Status Notes
gdb Supported
delve Supported
KDE Crash Report Supported
valgrind Supported

See also