[Wine] Compiling wine on 64-bit Ubuntu - ldap not detected

[zorgoth]

When trying to compile wine on 64-bit Ubuntu 10.04 I get the following message from ./configure

configure: OpenCL 32-bit development files not found, OpenCL won't be supported.
configure: libldap (OpenLDAP) 32-bit development files not found, LDAP won't be supported.

I don't care too much about OpenCL, although if anyone knows what library I need I wouldn't mind having it, but I want LDAP support, and I have libldap2-dev installed, but configure doesn't recognize it.  What can I do to get ldap support?