BIND 10 #2356: configure fails in examples/ because it doesn't find the boost header

[BIND 10 Development]

#2356: configure fails in examples/ because it doesn't find the boost header
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                   Reporter:  jreed  |                 Owner:  jinmei
                       Type:         |                Status:  accepted
  defect                             |             Milestone:
                   Priority:         |  Sprint-20121106
  medium                             |            Resolution:
                  Component:  build  |             Sensitive:  0
  system                             |           Sub-Project:  DNS
                   Keywords:         |  Estimated Difficulty:  3
            Defect Severity:  N/A    |           Total Hours:  0
Feature Depending on Ticket:         |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Comment (by jinmei):

 trac2356 is ready for review.

 I believe I've addressed all issues including the rpath hack.
 For the rpath, I've extracted the checks in the top level configure.ac
 into a single helper m4 file defined in example/m4 and used it for
 both the top level and example configure.ac's.  This way we can avoid
 duplicates, and it will also make the top level configure.ac more
 concise.

 I think we need a changelog here.  This is the proposal:
 {{{
 499.?   [bug]           jinmei
         Corrected the autoconf example in the examples directory so it can
         use the configured path to Boost to check availability of the BIND
         10 library.  Previously the sample configure script could fail if
         Boost is installed in an uncommon place.  Also, it now provides a
         helper m4 function and example usage for embedding the library
         path to executable (using linker options like -R) to help minimize
         post-build hassles.
         (Trac #2356, git TBD)
 }}}

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Ticket URL: <http://bind10.isc.org/ticket/2356#comment:5>
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