Debuginfod
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, so there is no need to install additional packages.
You can optionally install the debuginfod package which automatically adds DEBUGINFOD_URLS to the environment on login and provides the debuginfod-find(1) utility. This package is required for debuginfod support in delve.
Usage
If the debuginfod package is not installed or you want to set a custom URL, set the environment variable which tells the tooling where to look for debug symbols:
DEBUGINFOD_URLS="https://debuginfod.archlinux.org/"
One can also use https://debuginfod.elfutils.org/ which works as a federated server and queries all available debuginfod servers.
Now a debugger can fetch debug symbols without having to install the appropriate debug package.
$ gdb /usr/bin/i3
[...] Reading symbols from /usr/bin/i3... Downloading 1.56 MB separate debug info for /usr/bin/i3 Reading symbols from /home/user/.cache/debuginfod_client/29129d26dbe557d2b56daf90327f64f527304dc1/debuginfo... (gdb)
You can also do for example:
# coredumpctl gdb
And then inside gdb
bt full
and you will have the debug-symbols of the last crashed app in your sysyem.
See debuginfod-find(1) for usage.
Debugger support
Several debuggers support utilizing debuginfod to find debug symbol and source code listing.
| Package | Status | Notes |
|---|---|---|
| gdb | Supported | |
| delve | Partial Support | Supports debug symbols, missing source listing |
| KDE Crash Report | Supported |