"Permission denied" from eu-strip when building debuginfo package

[Toralf Lund <toralf procaptura com>]

I've never really bothered about building debuginfo packages for my 
rpms, but I though I might give it a try now. Unfortunately, I get a lot 
of messages of the form:

extracting debug info from /var/tmp/pcap-scan-root/usr/lib/libFBC.so.4
Only dest dir longer than base dir not supported
eu-strip: while opening "/var/tmp/pcap-scan-root/usr/lib/libFBC.so.4": 
Permission denied

when /usr/lib/rpm/find-debuginfo.sh is run. Has anyone else seen this? 
What exactly is going on here?

Actually, I think I know what the problem is - all the .so files are 
read-only. It seems to me that this is the right and proper way of 
installing them, however, and the  other strip operation 
(/usr/lib/rpm/redhat/brp-strip) never complains about it.

BTW, how well does this debuginfo stuff work, anyway? I'm a little 
concerned about the fact that there will be a separate debuginfo file 
for each DSO (as far as I can tell.) Does this mean that I have to run a 
"load" command for each and every shared object the app is linked with? 
(That seems like too much work...)

- Toralf