[MacPorts] #54646: subversion @1.9.7 does not build on Snow Leopard, Mac OS X 10.6.8, because "Berkeley DB 4.0.14 or 5.x wasn't found"

[MacPorts]

#54646: subversion @1.9.7 does not build on Snow Leopard, Mac OS X 10.6.8, because
"Berkeley DB 4.0.14 or 5.x wasn't found"
-------------------------+-------------------------
  Reporter:  ballapete   |      Owner:
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.4.1
Resolution:              |   Keywords:  snowleopard
      Port:  subversion  |
-------------------------+-------------------------

Comment (by ballapete):

 BTW, by including `opt/local/include/db48/db.h` the macros
 `DB_VERSION_MAJOR`, `DB_VERSION_MINOR`, and `DB_VERSION_PATCH` get
 #defined as `4`, `8`, and `30` respectively. In
 `/opt/local/include/db46/db.h` we can find:

 {{{
  42 /*
   43  * Berkeley DB version information.
   44  */
   45 #define DB_VERSION_MAJOR        4
   46 #define DB_VERSION_MINOR        6
   47 #define DB_VERSION_PATCH        21
   48 #define DB_VERSION_STRING       "Berkeley DB 4.6.21: (August 24,
 2017)"
 }}}

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Ticket URL: <https://trac.macports.org/ticket/54646#comment:23>
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