Error installing mysql-python: library not found for -lssl - pip

Question

I'm having trouble installing mysql-python. Created a new virtualenv and when installing mysql-python... here's the error message:
(env)$ pip install mysql-python
Collecting mysql-python
...
clang -bundle -undefined dynamic_lookup -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk build/temp.macosx-10.12-x86_64-2.7/_mysql.o -L/usr /local/Cellar/mysql/5.7.16/lib -lmysqlclient -lssl -lcrypto -o build/lib.macosx-10.12-x86_64-2.7/_mysql.so
ld: library not found for -lssl
clang: error: linker command failed with exit code 1 (use -v to see invocation)
error: command 'clang' failed with exit status 1
Using homebrew, I have installed:
libressl
openssl
openssl#1.1
mysql
Already tried to brew link but brew refuses to do so.
The OS is MacOS Sierra.
Can anyone help? Thanks!

Answer 1

You can set ssl library path explicitly.
LDFLAGS=-L/usr/local/opt/openssl/lib pip install mysqlclient

Answer 2

I tried updating Xcode's CLT, uninstalling mysql, checking mysql_config, etc., but had no luck.
I found that running brew info openssl shows:
...
For compilers to find openssl you may need to set:
export LDFLAGS="-L/usr/local/opt/openssl/lib"
export CPPFLAGS="-I/usr/local/opt/openssl/include"
...
Running those two commands, followed by pip install, worked for me (in my case when installing mysqlclient).

Answer 3

Solved it with these steps:
brew uninstall mysql
brew install mysql-connector-c
pip install mysql-python
brew unlink mysql-connector-c
brew install mysql
Found the answer here https://stackoverflow.com/a/25920020/576192
Not sure if this is the right way, but this is how I managed to solve it.

Answer 4

I'm able to fix the error by running:
pip install -r requirements.txt --global-option=build_ext --global-option="-I/usr/local/opt/openssl/include" --global-option="-L/usr/local/opt/openssl/lib"

Answer 5

I was finally able to fix it by
xcode-select --install
I was sure I had already done that... but obviously I hadn't. Definitely worth a shot!

Answer 6

For me on mac, running this command solved the issue
LDFLAGS=-L/usr/local/opt/openssl/lib pip install mysqlclient
Actually we need to set ssl library path to get this issue fixed.

Answer 7

Worked for me by doing this
$ brew uninstall mysql
$ brew install mysql-connector-c
$ brew unlink mysql-connector-c
$ brew install mysql
$ pip install mysql-python
Which is a slightly altered version of the recipe above (note: pip install at the end!)

Answer 8

If you want to install mysql-python, I suggest you to install mysqlclient instead. The authors of these two modules are the same. By far, the authors all turn to keep maintaining mysqlclient. mysqlclient supports both Python 2 and Python 3. And you can use the same codes like mysql-python. Blew is my installation solution for you.
$ brew info openssl
$ brew unlink mysql-connector-c
$ brew install mysql
$ brew link --overwrite mysql-connector-c
$ pip install mysqlclient
If there is an error before pip install mysqlclient. Please fix it according to methane's answer.
And run pip install mysqlclient again.

Answer 9

Or download and install .dmg from the MySQL dev site: https://dev.mysql.com/downloads/file/?id=467834

Answer 10

For those of you who are installing MySQL v5.7 with Brew
Uninstall mysql-connector-c
$ brew uninstall mysql-connector-c
Install specific version, very likely you need to uninstall other installed versions
$ brew install mysql#5.7
You will need to add it to the PATH, since this is 'keg-only' formulae, this is printed after it is installed
$ echo 'export PATH="/usr/local/opt/mysql#5.7/bin:$PATH"' >> ~/.zshrc
Replace ~/.zshrc with the appropriate file.
Install mysql-connector-c
$ brew install mysql-connector-c
Check it is installed properly
$ which mysql
# /usr/local/opt/mysql#5.7/bin/mysql
$ mysql_config
# Usage: /usr/local/opt/mysql#5.7/bin/mysql_config [OPTIONS]
Compiler: Clang 10.0.0.10001145
Options:
--cflags [-I/usr/local/opt/mysql#5.7/include/mysql ]
--cxxflags [-I/usr/local/opt/mysql#5.7/include/mysql ]
--include [-I/usr/local/opt/mysql#5.7/include/mysql]
--libs [-L/usr/local/opt/mysql#5.7/lib -lmysqlclient -lssl -lcrypto]
--libs_r [-L/usr/local/opt/mysql#5.7/lib -lmysqlclient -lssl -lcrypto]
--plugindir [/usr/local/opt/mysql#5.7/lib/plugin]
--socket [/tmp/mysql.sock]
--port [0]
--version [5.7.24]
--libmysqld-libs [-L/usr/local/opt/mysql#5.7/lib -lmysqld -lssl -lcrypto]
--variable=VAR VAR is one of:
pkgincludedir [/usr/local/opt/mysql#5.7/include/mysql]
pkglibdir [/usr/local/opt/mysql#5.7/lib]
plugindir [/usr/local/opt/mysql#5.7/lib/plugin]
Now install mysqlclient
$ pip install mysqlclient