psycopg2 installation error – Library not loaded: libssl.dylib

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Does the error say libssl.dylib version is too old?

On my mac, the error is that libssl.dylib and libcrypto.dylib is too old for pyscopg to use. The openssl package used by mac is 0.98, while pyscopg needs 1.0.0 or later version.

My solution is this:

  1. install openssl from brew

    $ brew install openssl

  2. copy libssl.1.0.0.dylib and libcrypto.1.0.0.dylib from /usr/local/Cellar/openssl/1.0.1c to /usr/lib/

    $ cd /usr/local/Cellar/openssl/1.0.1c/lib
$ sudo cp libssl.1.0.0.dylib libcrypto.1.0.0.dylib /usr/lib/

  3. in /usr/lib directory, make a softlink libssl.dylib and libcrypto.dylib. You may have to remove the existing links.

    $ sudo rm libssl.dylib libcrypto.dylib
$ sudo ln -s libssl.1.0.0.dylib libssl.dylib
$ sudo ln -s libcrypto.1.0.0.dylib libcrypto.dylib

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