先用brew装mysql-connector-c
安装mysqlclient会找不到mysql_config，可以用ln -s /usr/local/Cellar/mysql-connector-c/6.1.11/bin/mysql_config /usr/local/bin/mysql_config
之后会报错Wrong MySQL configuration: maybe https://bugs.mysql.com/bug.php?id=86971 ?，可以参考这个说明，将mysql_config里面的libs=”$libs -l “改成libs=”$libs -lmysqlclient -lssl -lcrypto”（后来我又把-lssl和-lcrypto删了）（https://blog.csdn.net/gaogaorimu/article/details/80903112）