From: Brian Candler <b.candler@...>
Date: 2009-06-03T18:02:38+09:00
Subject: Re: Compile Error:  ldap.c:424: error: ‘LDAP_ OPT_X_TLS_PROTOCOL’ undeclared (first u se in this

This is standard C debugging, so I don't think it really belongs on a 
Ruby list any more.

$ find /usr/include -type f | xargs grep LDAP_OPT_X_TLS_PROTOCOL
/usr/include/ldap.h:/* #define LDAP_OPT_X_TLS_PROTOCOL    0x6007 */

So the constant exists in the openldap headers, but is commented out for 
some reason. A note earlier in the file says this is an openldap private 
option.

As to why ruby-ldap uses this option, but openldap doesn't provide it: 
well, that's something to do with the ruby-ldap library. If you look at 
the patches which the Ubuntu package applies to make it build, you'll 
probably find what they do to fix it.
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