On Thu, Mar 21, 2019 at 12:21:58PM +1300, Thomas Munro wrote: > On several AIX BF animals such as tern, I see evidence that it might > be using IBM LDAP: > > checking for ldap_initialize... no > Another explanation is that it is actually using OpenLDAP, but it's a > version so ancient that it doesn't have OpenLDAP's non-standard > ldap_initialize() function (that'd put it in the 20th century, > pre-2.0). It's openldap-2.4.45. The conclusion that ldap_initialize() is absent stems from a bug in "configure". This system has LDAP_LIBS_BE='-lldap -llber' due to EXTRA_LDAP_LIBS=-llber, but the ldap_initialize() test is done without -llber. Relevant config.log: https://buildfarm.postgresql.org/cgi-bin/show_stage_log.pl?nm=mandrill&dt=2019-03-20%2021%3A47%3A35&stg=config On Wed, Mar 20, 2019 at 11:35:39PM -0400, Tom Lane wrote: > Thomas Munro <thomas.munro@xxxxxxxxx> writes: > > Would it be useful for the buildfarm to dump ldd (or equivalent) > > output for the binaries it's running so that we can see which > > libraries it finished up linking? > > +1 for displaying the LDAP library type/version in some form, but > > (a) ldd is pretty platform-specific; > (b) you will likely get something like "/usr/lib64/libldap.so" > which isn't too definite about what we're using. > > Is there some other way to fingerprint the LDAP implementation? I would use ldap_get_option(LDAP_OPT_API_INFO), which gives you a vendor name string and a version number, among other information.