cmake: Add detection of slapi library without base slapi.so.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit 2f07f1237e)

ConfigureChecks.cmake

@@ -42,12 +42,27 @@ endif( HAVE_LIBLDAP )
 
 ##### check for openldap-server
 
-find_library( HAVE_SLAPI slapi )
-if( HAVE_SLAPI )
-   set( SLAPI_LIBRARIES slapi )
-  else()
-   tde_message_fatal( "The slapi library ( openldap-server ) is required, but was not found on your system" )
-endif( HAVE_SLAPI )
+if( NOT DEFINED SLAPI_LIBRARIES )
+  message( STATUS "Looking for slapi library" )
+  find_library( HAVE_SLAPI slapi )
+  if( HAVE_SLAPI )
+     set( SLAPI_LIBRARIES slapi )
+    else()
+     get_filename_component( LDAP_LIBDIR ${HAVE_LIBLDAP} PATH CACHE )
+     file( GLOB LIBSLAPI_FILES
+           ${LDAP_LIBDIR}/${CMAKE_SHARED_LIBRARY_PREFIX}slapi-[0-9]*${CMAKE_SHARED_LIBRARY_SUFFIX}
+           ${LDAP_LIBDIR}/${CMAKE_SHARED_LIBRARY_PREFIX}slapi-[0-9]*${CMAKE_SHARED_LIBRARY_SUFFIX}.[0-9]*
+           /usr/lib/${CMAKE_SHARED_LIBRARY_PREFIX}slapi-[0-9]*${CMAKE_SHARED_LIBRARY_SUFFIX}
+           /usr/lib/${CMAKE_SHARED_LIBRARY_PREFIX}slapi-[0-9]*${CMAKE_SHARED_LIBRARY_SUFFIX}.[0-9]*
+     )
+     if( LIBSLAPI_FILES )
+       list( GET LIBSLAPI_FILES 0 SLAPI_LIBRARIES )
+      else( )
+       tde_message_fatal( "The slapi library ( openldap-server ) is required, but was not found on your system" )
+     endif( )
+  endif( HAVE_SLAPI )
+  message( STATUS "Looking for slapi library - found ${SLAPI_LIBRARIES}" )
+endif( )
 
 
 ##### check for tdeldap