32-git archs may beed linking to libatomic: Undefined symbols: "___atomic_compare_exchange_8" etc. #643

[100%] Linking CXX executable aMule.app/Contents/MacOS/aMule
cd /opt/local/var/macports/build/amule-05862ffd/work/build/src && /opt/local/bin/cmake -E cmake_link_script CMakeFiles/amule.dir/link.txt --verbose=ON
Undefined symbols for architecture ppc:
  "___atomic_compare_exchange_8", referenced from:
      CDownloadBandwidthThrottler::Reserve(unsigned int) in DownloadBandwidthThrottler.cpp.o
  "___atomic_fetch_add_8", referenced from:
      CDownloadBandwidthThrottler::Refund(unsigned int) in DownloadBandwidthThrottler.cpp.o
  "___atomic_load_8", referenced from:
      CDownloadBandwidthThrottler::RefillBudget(unsigned int, unsigned int) in DownloadBandwidthThrottler.cpp.o
      CDownloadBandwidthThrottler::Reserve(unsigned int) in DownloadBandwidthThrottler.cpp.o
  "___atomic_store_8", referenced from:
      CDownloadBandwidthThrottler::RefillBudget(unsigned int, unsigned int) in DownloadBandwidthThrottler.cpp.o
ld: symbol(s) not found for architecture ppc
collect2: error: ld returned 1 exit status
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make[2]: *** [src/aMule.app/Contents/MacOS/aMule] Error 1