BIND 10 #3113: Hooks unit-tests fail when --enable-static-link is used

[BIND 10 Development]

#3113: Hooks unit-tests fail when --enable-static-link is used
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            Reporter:  tomek         |                        Owner:
                Type:  defect        |  UnAssigned
            Priority:  medium        |                       Status:
           Component:  dhcp          |  reviewing
            Keywords:                |                    Milestone:
           Sensitive:  0             |  Sprint-DHCP-20130904
         Sub-Project:  DHCP          |                   Resolution:
Estimated Difficulty:  0             |                 CVSS Scoring:
         Total Hours:  0             |              Defect Severity:  N/A
                                     |  Feature Depending on Ticket:
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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Changes (by marcin):

 * owner:   => UnAssigned
 * status:  new => reviewing
 * milestone:  DHCP Outstanding Tasks => Sprint-DHCP-20130904


Comment:

 I made necessary changes and committed them to the branch.

 This patch disables static linking of the unit tests which use hooks. The
 shared test libraries have to be linked with the b10-libraries, such as
 logger and hooks. If unit tests are linked statically with these libraries
 we end up with two copies of logger, hooks lib etc. These libs are
 stateful (have static global objects), so having distinct copies of them
 does not make any sense. In order to allow these objects to be shared
 between the unit test and the shared test libs, the linked b10-libs must
 be linked dynamically.

 Having said that, I wonder if we should update the documentation to point
 out that the programs using hooks should be linked dynamically, unless the
 shared libraries implementing callouts do not depend on the stateful
 b10-libs.

 {{{
 6XX.    [bug]           marcin
         Disabled static linking of unit tests using hooks. This allows
         to share the b10 libraries between the unit tests and libraries
         implementing hooks. This prevents the unit tests failures
         when --enable-static-link configure flag is specified.
         (Trac #3113, git abcd)


 }}}

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Ticket URL: <http://bind10.isc.org/ticket/3113#comment:2>
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