[tor-bugs] #31891 [Core Tor/Tor]: make autostyle doesn't work when building outside the source tree

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#31891: make autostyle doesn't work when building outside the source tree
------------------------------+---------------------------------
     Reporter:  catalyst      |      Owner:  (none)
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:  Tor: unspecified
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:  easy, maint-scripts
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
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 It looks like `make autostyle` doesn't work correctly if building outside
 the source tree. (Here I'm building in a subdirectory of the source tree.)
 {{{
 $ make -k autostyle
 abs_top_srcdir="/Users/tlyu/src/tor/build-norust/.." python3
 ../scripts/maint/update_versions.py
 Traceback (most recent call last):
   File "../scripts/maint/update_versions.py", line 98, in <module>
     with open("configure.ac") as f:
 FileNotFoundError: [Errno 2] No such file or directory: 'configure.ac'
 make: *** [update-versions] Error 1
 python3 scripts/maint/annotate_ifdef_directives.py ../src/lib/*/*.[ch]
 ../src/core/*/*.[ch] ../src/feature/*/*.[ch] ../src/app/*/*.[ch]
 ../src/test/*.[ch] ../src/test/*/*.[ch] ../src/tools/*.[ch]
 /Users/tlyu/src/brew/Cellar/python/3.7.4/Frameworks/Python.framework/Versions/3.7/Resources/Python.app/Contents/MacOS/Python:
 can't open file 'scripts/maint/annotate_ifdef_directives.py': [Errno 2] No
 such file or directory
 make: *** [autostyle-ifdefs] Error 2
 python3 scripts/maint/rectify_include_paths.py
 /Users/tlyu/src/brew/Cellar/python/3.7.4/Frameworks/Python.framework/Versions/3.7/Resources/Python.app/Contents/MacOS/Python:
 can't open file 'scripts/maint/rectify_include_paths.py': [Errno 2] No
 such file or directory
 make: *** [rectify-includes] Error 2
 make: Target `autostyle' not remade because of errors.
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31891>
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