Django：在OS X环境下连接MySQL数据库

正常的安装只需要执行以下2条命令：

$ brew install mysql-connector-c
$ pip3 install mysqlclient

但在执行 pip3 install mysqlclient时，出现报错：

which ()
{
  IFS="${IFS=   }"; save_ifs="$IFS"; IFS=':'
  for file
  do
:112
      File "<string>", line 1, in <module>
      File "/private/var/folders/k9/q3cgwmcx4l51554_97h5rx4h0000gn/T/pip-install-n_ai97oc/mysqlclient/setup.py", line 16, in <module>
        metadata, options = get_config()
      File "/private/var/folders/k9/q3cgwmcx4l51554_97h5rx4h0000gn/T/pip-install-n_ai97oc/mysqlclient/setup_posix.py", line 63, in get_config
        libraries = [dequote(i[2:]) for i in libs if i.startswith('-l')]
      File "/private/var/folders/k9/q3cgwmcx4l51554_97h5rx4h0000gn/T/pip-install-n_ai97oc/mysqlclient/setup_posix.py", line 63, in <listcomp>
        libraries = [dequote(i[2:]) for i in libs if i.startswith('-l')]
      File "/private/var/folders/k9/q3cgwmcx4l51554_97h5rx4h0000gn/T/pip-install-n_ai97oc/mysqlclient/setup_posix.py", line 12, in dequote
        raise Exception("Wrong MySQL configuration: maybe https://bugs.mysql.com/bug.php?id=86971 ?")
    Exception: Wrong MySQL configuration: maybe https://bugs.mysql.com/bug.php?id=86971 ?
    ----------------------------------------
ERROR: Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/k9/q3cgwmcx4l51554_97h5rx4h0000gn/T/pip-install-n_ai97oc/mysqlclient/

原因是，MySQL Connector/C使用了错误的默认配置，导致在Mac OS X下编译出错。

因此，解决方法就是修改该默认配置。

执行命令 which mysql_config 以查看配置文件（mysql_config）的具体路径.

$ which mysql_config
/usr/local/bin/mysql_config   # 输出了配置文件的真实路径

用你熟悉的编辑器打开该文件, 定位到112行。

#原配置是：
# Create options
libs="-L$pkglibdir"
libs="$libs -l "

#修改成以下：
# Create options
libs="-L$pkglibdir"
libs="$libs -lmysqlclient -lssl -lcrypto"

最后再执行前面的 $ pip3 install mysqlclient, 已经可以正常安装了。

附上官方文档： https://pypi.org/project/mysqlclient/