$ otool -L bitcoind
bitcoind:
	/usr/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.5)
	/usr/local/lib/gcc/4.9/libstdc++.6.dylib (compatibility version 7.0.0, current version 7.20.0)
	/usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 2577.0.0)
	/usr/local/lib/gcc/4.9/libgcc_s.1.dylib (compatibility version 1.0.0, current version 1.0.0)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1197.1.1)