[tor-bugs] #22701 [Core Tor/Tor]: Missing makefile dependencies make parallel builds fail

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#22701: Missing makefile dependencies make parallel builds fail
--------------------------+------------------------------------
 Reporter:  teor          |          Owner:  (none)
     Type:  defect        |         Status:  reopened
 Priority:  Medium        |      Milestone:  Tor: 0.3.2.x-final
Component:  Core Tor/Tor  |        Version:  Tor: 0.3.0.8
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:                |         Points:  0.5
 Reviewer:                |        Sponsor:
--------------------------+------------------------------------

Comment (by teor):

 I just had a similar error on a completely separate macOS machine, not a
 VM, different number of cores:

 {{{
 $ make clean src/test/test-slow
 ...
 rm -f src/or/*.o
 ...
   CC       src/or/src_or_libtor_testing_a-git_revision.o
 ...
   AR       src/or/libtor-testing.a
 ar: src/or/src_or_libtor_testing_a-addressmap.o: No such file or directory
 ar: src/or/src_or_libtor_testing_a-bridges.o: No such file or directory
 ar: src/or/src_or_libtor_testing_a-channel.o: No such file or directory
 (everything else is missing, too)
 make: *** [src/or/libtor-testing.a] Error 1
 make: *** Waiting for unfinished jobs....
 Exit 2
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22701#comment:10>
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