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To install OpenOCD simply run as root:

root # emerge -av openocd


To get usage help, run as user:

user $ openocd -h
Open On-Chip Debugger 0.10.0
Licensed under GNU GPL v2
For bug reports, read
Open On-Chip Debugger
Licensed under GNU GPL v2
--help       | -h	display this help
--version    | -v	display OpenOCD version
--file       | -f	use configuration file <name>
--search     | -s	dir to search for config files and scripts
--debug      | -d	set debug level <0-3>
--log_output | -l	redirect log output to file <name>
--command    | -c	run <command>

Hints and tips

The installation adds new plugdev group and installs virtual/udev rules for some hardware (e.g. FTDI USB/Serial adapters), which uses this group for device files (e.g. /dev/ttyUSBx). To use these devices as regular user, the user must be member of plugdev group.


The group of device files can be, after installation of dev-embedded/openocd, changed. Without this package most of them has uucp as group and after install it, they can seems as stop to works.