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sudo xcode-select –install
Fazer o Download de: http://ftp.unicamp.br/pub/apache/logging/log4cxx/0.10.0/apache-log4cxx-0.10.0.tar.gz
tar -xzvf apache-log4cxx-0.10.0.tar.gz cd apache-log4cxx-0.10.0
export CXXFLAGS=“-stdlib=libstdc++” export CFLAGS=“-stdlib=libstdc++”
./configure make sudo make install