[tor-bugs] #19821 [Core Tor/Tor]: --expensive-hardening makes configure check for curve25519-donna-c64 to fail

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#19821: --expensive-hardening makes configure check for curve25519-donna-c64 to
fail
--------------------------+------------------------------------
 Reporter:  yurivict271   |          Owner:
     Type:  defect        |         Status:  new
 Priority:  Medium        |      Milestone:  Tor: 0.2.8.x-final
Component:  Core Tor/Tor  |        Version:  Tor: 0.2.8.6
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
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Changes (by nickm):

 * milestone:   => Tor: 0.2.8.x-final


Comment:

 Actually, I think this is one of the longstanding clang installation bugs
 that we have a better workaround for in 0.2.9.

 When you try with git master, do you get this message?
 {{{
 configure: error: The compiler supports -fsanitize=address, but for some
 reason I was not
 able to link when using it. Are you missing run-time support? With GCC you
 need libubsan.so,
  and with Clang you need libclang_rt.ubsan*
 }}}

 If so, you probably need to install a version of clang with the required
 runtime libraries. (IIRC Some distributions began accidentally omitting
 these libraries when clang deprecated autotools and switched to cmake or
 whatever they're using now.)

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19821#comment:6>
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