Hello, I wanted to install the version 1.67 in mac as i have it in windows (the newest version 1.73 is not working for me) but i read that it is not compatible with mac. The version compatible with mac is above 1.69. So i decided to install this one. If I am mistaken let me know. I wanted to ask you if it is normal to get 524 warnings. All the warnings say the same: warning: empty macro arguments are a C99 feature [-Wc99-extensions] I just did it like this FrankGrimes:Desktop user$ cd boost_1_69_0 FrankGrimes:boost_1_69_0 user$ ./bootstrap.sh --prefix=/Users/user/boost FrankGrimes:boost_1_69_0 user$ ./b2 install Thise warnings will have any influence with my code. I am using xcode and I am having errors with boost due to unused parameters in args in filter_parser.hpp functions so i do not know if this error has something to do with it. Thanks