Can't get rpmbuild to work with gpg-agent

[Guido Winkelmann]

Hi,

I'm trying to package some software with rpmbuild and signing the packages at 
the same time. I'm following the guide found here:

http://www.ibm.com/developerworks/library/l-rpm3/

It mostly works - I do get properly signed RPMs at the end - however, despite 
running gpg-agent, rpmbuild keeps asking for my (lengthy) GPG-passphrase every 
single time it is finished with a spec-file. This can be particularly annoying 
when building very large packages, because, instead of asking again, rpmbuild 
will abort the entire process if I mistype the passphrase even once. If I run 
rpmbuild again after that, it will build the whole package over again...

I have started gpg-agent (as a normal user) with

gpg-agent --daemon --enable-ssh-support \
--write-env-file "${HOME}/.gpg-agent-info"

I have put the following lines

if [ -f "${HOME}/.gpg-agent-info" ]; then                                                                                                                                                             
  . "${HOME}/.gpg-agent-info"                                                                                                                                                                         
  export GPG_AGENT_INFO                                                                                                                                                                               
  export SSH_AUTH_SOCK                                                                                                                                                                                
  export SSH_AGENT_PID                                                                                                                                                                                
fi                                                                                                                                                                                                    
                                                                                                                                                                                                      
GPG_TTY=$(tty)                                                                                                                                                                                        
export GPG_TTY

at the end of my .bashrc, and also manually run them in my current shell. The 
env command tells me it knows of the variables GPG_AGENT_INFO, SSH_AGENT_PID, 
SSH_AUTH_SOCK, and GPG_TTY, with plausible looking values in all cases. When I 
just run gpg-agent in my current shell with no parameters, it tells me "gpg-
agent: gpg-agent running and available". I'm running rpmbuild like this:

rpmbuild -ba --sign rpmbuild/SPECS/<specfile>

What am I still missing?

	Guido