Bitcoin blockchain library
Make sure you have installed libbitcoin-database and libbitcoin-consensus (optional) beforehand according to their respective build instructions.
$ ./autogen.sh
$ ./configure
$ make
$ sudo make install
$ sudo ldconfiglibbitcoin-blockchain is now installed in /usr/local/.
The default configuration requires libbitcoin-consensus. This ensures consensus parity with the Satoshi client. To eliminate the libbitcoin-consensus dependency use the --without-consensus option. This results in use of libbitcoin consensus checks.
Instead of building, libbitcoin can be installed from a formula:
$ brew install libbitcoin-blockchain