mac pip install mysqlclient 报错

报错信息如下：

building '_mysql' extension
    creating build/temp.macosx-10.6-intel-3.6
    /usr/bin/clang -fno-strict-aliasing -Wsign-compare -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -arch i386 -arch x86_64 -g -Dversion_info=(1,3,7,'final',1) -D__version__=1.3.7 -I/usr/local/Cellar/mysql-connector-c/6.1.11/include -I/Users/sunnky/simple24/pos_server/venv/include -I/Library/Frameworks/Python.framework/Versions/3.6/include/python3.6m -c _mysql.c -o build/temp.macosx-10.6-intel-3.6/_mysql.o
    /usr/bin/clang -bundle -undefined dynamic_lookup -arch i386 -arch x86_64 -g build/temp.macosx-10.6-intel-3.6/_mysql.o -L/usr/local/Cellar/mysql-connector-c/6.1.11/lib -lmysqlclient -lssl -lcrypto -o build/lib.macosx-10.6-intel-3.6/_mysql.cpython-36m-darwin.so
    ld: library not found for -lssl
    clang: error: linker command failed with exit code 1 (use -v to see invocation)
    error: command '/usr/bin/clang' failed with exit status 1

解决办法

export LIBRARY_PATH=$LIBRARY_PATH:/usr/local/opt/openssl/lib/