[tor-bugs] #20301 [Applications/Tor Browser]: Bumping the compiler version to 6.2.0 breaks 64bit Tor Browser builds

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#20301: Bumping the compiler version to 6.2.0 breaks 64bit Tor Browser builds
-------------------------------------+-------------------------------------
     Reporter:  gk                   |      Owner:  tbb-team
         Type:  defect               |     Status:  new
     Priority:  Very High            |  Milestone:
    Component:  Applications/Tor     |    Version:
  Browser                            |   Keywords:  tbb-gitian,
     Severity:  Blocker              |  TorBrowserTeam201610
Actual Points:                       |  Parent ID:
       Points:                       |   Reviewer:
      Sponsor:                       |
-------------------------------------+-------------------------------------
 After bumping the GCC version to 6.2.0 due to #13893 building GCC 6.2.0 is
 busted for 64bits in our gitian setup:
 {{{
 /usr/bin/ld.bfd.real: gcov.o: relocation R_X86_64_32 against `.rodata' can
 not be used when making a shared object; recompile with -fPIC
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20301>
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