"Attempt to redeclare already existing project id"?

Thread: "Attempt to redeclare already existing project id"?

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"Attempt to redeclare already existing project id"?
	2007-08-15 13:04:54
Hi all, I recently started getting the above error from bjam when trying to build my docs (note: the error is coming from tools/build/v2/build/project.jam#729). I'm struggling to figure out what I changed to make it start doing this. Can anyone tell me what the jam variable $(id) is supposed to represent here? It is being returned as "boost/cgi" at the point of the error, but none of my Jamfile.v2s are setting up any project name. I also noticed $(location) is "libs/cgi/build&quot; at the time of the error. I'm calling bjam from "libs/cgi/doc&quot;. Strangely, if the "build" directory has an empty Jamfile.v2, the error comes up, but if I delete the directory, the error disappears. It's replaced by other errors (including: "<tag>rulename is present but is not the only <tag>; feature&quot;), but I haven't investigated that yet. What am I missing? Regards, Darren PS. The code in question is in the boost sandbox, here: http://tinyurl.com/2w9mh4