1.2.1 to 1.4.2 upgrade question

[Gerben Wierda]

I have a gpg 1.2.1 binary which I compiled a while back. I use this  
binary in a special sort of free-floating way in an application for a  
restricted (no web of trust, yes I am aware of limitations of this  
setup but it is better than nothing) way of verifying files. There is  
needs not to be a gpg installed on the system, the setup works  
independently of any GPG install.

I used to do something like this

mkdir /tmp/gpg-test
chmod 700 /tmp/gpg-test/
( cat foo | gpg --quiet --keyserver wwwkeys.nl.pgp.net --homedir /tmp/ 
gpg-test --no-options --keyserver-options auto-key-retrieve --verify  
foo.sig - )

With 1.2.1, this works. E.g.

$ cat tex.plist| gpg --keyserver wwwkeys.nl.pgp.net --homedir /tmp/ 
gpg-test --no-options --keyserver-options auto-key-retrieve --verify  
tex.plist.sig
gpg: Signature made Sat Sep 17 22:32:38 2005 CEST using DSA key ID  
C87AB5FC
gpg: /tmp/gpg-test/trustdb.gpg: trustdb created
gpg: key C87AB5FC: public key "i-Installer <iinstaller at rna.nl>" imported
gpg: Total number processed: 1
gpg:               imported: 1
gpg: Good signature from "i-Installer <iinstaller at rna.nl>"
gpg: checking the trustdb
gpg: no ultimately trusted keys found
gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to  
the owner.
Primary key fingerprint: C1BA 787F 78B0 18D2 B6E7  9464 9D03 DB70  
C87A B5FC

But with 1.4.2 I get:

gpg: keyring `/tmp/gpg-test/pubring.gpg' created
gpg: Signature made Sat Sep 17 22:32:38 2005 CEST using DSA key ID  
C87AB5FC
gpg: requesting key C87AB5FC from hkp server wwwkeys.nl.pgp.net
gpg: unable to execute program `/usr/local/libexec/gnupg/ 
gpgkeys_hkp': No such file or directory
gpg: no handler for keyserver scheme `hkp'
gpg: Can't check signature: public key not found

This is not surprising as gpg is not installed on the system and this  
script should work regardless of its install. It seems gpg has the  
string /usr/local/libexec/gnupg hard coded. Is it possible for me to  
make gpg use gpgkeys_hkp from another location? Or am I in trouble  
and can't I use GPG anymore in this free floating manner?

Thanks,

G