--- ptlib-2.16.2/src/ptclib/pldap.cxx	2016-05-12 11:53:04.000000000 +0200
+++ ptlib-2.16.2/src/ptclib/pldap.cxx.orig	2023-09-09 21:11:52.400305692 +0200
@@ -141,7 +141,7 @@
   else
     whoPtr = who;
 
-#ifdef SOLARIS
+#ifdef SOLARIS_ORIG
   static const int AuthMethodCode[NumAuthenticationMethod2] = {
     LDAP_AUTH_SIMPLE, LDAP_AUTH_SASL, LDAP_AUTH_KRBV41_30, LDAP_AUTH_KRBV42_30
 #else
--- ptlib-2.16.2/include/ptclib/pldap.h	2016-05-12 11:53:07.000000000 +0200
+++ ptlib-2.16.2/include/ptclib/pldap.h.orig	2023-09-09 21:28:37.016974899 +0200
@@ -103,7 +103,7 @@
       AuthSimple,
       AuthSASL,
       AuthKerberos,
-#ifdef SOLARIS
+#ifdef SOLARIS_ORIG
       NumAuthenticationMethod1,
       NumAuthenticationMethod2
 #else
--- ptlib-2.16.2/configure.ac	2016-05-12 11:53:04.000000000 +0200
+++ ptlib-2.16.2/configure.ac.orig	2023-09-09 21:38:43.744699705 +0200
@@ -1462,7 +1462,7 @@
    [Open LDAP support],
    [ldap],
    [],
-   [-lldap -llber],
+   [-lldap-2.6 -llber-2.6],
    [#include <ldap.h>],
    [ldap_init("localhost", 1234)],
    [],