MacOS Mojave 10.14.4 上安装 MySQL-python 恶心到吐，以前 MacOS series 版本时安装过，但没有这么痛苦。为以后不再被恶心到，还是记录一下吧。

我们安装 MySQL-python 之前应该都已经安装过 mysql 了，这里就不记录了。

执行 pip install MySQL-python

第一种报错：
_mysql.c:44:10: fatal error: 'my_config.h' file not found
#include "my_config.h"
^~~~~
1 error generated.
error: command 'cc' failed with exit status 1
解决方法：

brew install mysql-connector-c

上面的问题解决了，会再报第二种错：

ld: library not found for -lssl
clang: error: linker command failed with exit code 1 (use -v to see invocation)
error: command 'cc' failed with exit status 1

解决方法：

echo 'export PATH="/usr/local/opt/mysql@5.7/bin:/usr/local/opt/openssl@1.1/bin:$PATH"' >> ~/.bash_profile
echo 'export LDFLAGS="-L/usr/local/opt/mysql@5.7/lib -L/usr/local/opt/openssl@1.1/lib/"' >> ~/.bash_profile
echo 'export CPPFLAGS="-I/usr/local/opt/mysql@5.7/include -I/usr/local/opt/openssl@1.1/include"' >> ~/.bash_profile
echo 'export PKG_CONFIG_PATH="/usr/local/opt/mysql@5.7/lib/pkgconfig"' >> ~/.bash_profile
source ~/.bash_profile

再执行 pip install MySQL-python
OK