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[Matthias Klose <doko@xxxxxxxxxx>]

work around for a first build

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https://bugs.launchpad.net/bugs/1570894

Title:
  s390x build failure

Status in nux package in Ubuntu:
  New

Bug description:
  poking s390x build failure:

  Executing gtest-nuxgraphics under dummy xserver results in illigel
  instructions:

  # .libs/gtest-nuxgraphics 
  [==========] Running 9 tests from 2 test cases.
  [----------] Global test environment set-up.
  [----------] 8 tests from TestTextures
  [ RUN      ] TestTextures.TestTextureSizes
  Illegal instruction (core dumped)

  Program received signal SIGILL, Illegal instruction.
  0x000003fffdf2e53a in nux::NThreadSafeCounter::Increment (this=0x3fffdf53f2e <nux::SystemStart()::StaticBuffer+200>) at ThreadGNU.cpp:31
  31	    return __sync_add_and_fetch (&m_Counter, 1);
  (gdb) backtrace full
  #0  0x000003fffdf2e53a in nux::NThreadSafeCounter::Increment (this=0x3fffdf53f2e <nux::SystemStart()::StaticBuffer+200>) at ThreadGNU.cpp:31
  No locals.

  
  But there is nothing special in ThreadGNU.cpp:31 it simply does:

    int NThreadSafeCounter::Increment()
    {
      return __sync_add_and_fetch (&m_Counter, 1);
    }

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