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I have several questions related to this topic:
What is the value of ${prefix} in package.xml? Is it an env variable?
How can I output these values?
Are there any other "hidden" variables like this one in package.xml?
Is it possible to run system command in package.xml, such as $(rospack find std_msgs) ?
Is it a general question applicable to all xml files or is it only ROS-specific?
Thanks.
from comments: The value of ${prefix} is the path where package.xml is located
not sure if this is true just copying for visibility
Looks like the prefix variable comes from catkin: https://github.com/ros/catkin/commit/6b30f78a230a5d3de79f19dbf230ff45f1421aaf
Asked: 2015-03-21 18:53:40 -0500
Seen: 2,635 times
Last updated: Jun 28 '20
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I know the answer to the first one now. The value of ${prefix} is the path where package.xml locates.
@abcgarden How do you know? Is there any documentation on-line about it?