[tor-bugs] #19902 [Core Tor/Tor]: Dual-install of libevent 1 and libevent 2 on openbsd confuses our autoconf logic

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#19902: Dual-install of libevent 1 and libevent 2 on openbsd confuses our autoconf
logic
--------------------------+------------------------------------
 Reporter:  nickm         |          Owner:  nickm
     Type:  defect        |         Status:  needs_review
 Priority:  Medium        |      Milestone:  Tor: 0.2.9.x-final
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:  openbsd       |  Actual Points:
Parent ID:                |         Points:  .2
 Reviewer:                |        Sponsor:
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Changes (by nickm):

 * status:  accepted => needs_review


Comment:

 I think the problem may be that we demand header files that exist only in
 libevent 2, but we accept libraries that only support libevent 1... until
 we finally link.

 Possible fix in branch `bug19902_try1` in my public repository. I claim we
 should merge it whether it fixes the issue on openbsd or not.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19902#comment:2>
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