Installing M2Crypto 0.20.1 on Python 2.6 on Ubuntu 14.04
Question: I need to compile and install M2Crypto 0.20.1 from source for Python 2.6 on
Ubuntu 14.04. I can't migrate to Python2.7 right now but we're planning so. I
installed Python2.6 from <https://launchpad.net/~fkrull/+archive/deadsnakes>.
I have installed libssl-dev and python2.6-dev, file /usr/include/x86_64-linux-
gnu/openssl/opensslconf.h has 644 as permissions and is owned by root.

However the `setup.py install` for M2Crypto fails as below:

    
    
    Running setup.py install for M2Crypto
        building 'M2Crypto.__m2crypto' extension
        swigging SWIG/_m2crypto.i to SWIG/_m2crypto_wrap.c
        swig -python -I/usr/include/python2.6 -I/usr/include -includeall -o SWIG/_m2crypto_wrap.c SWIG/_m2crypto.i
        SWIG/_evp.i:9: Error: Unable to find 'openssl/opensslconf.h'
        SWIG/_ec.i:7: Error: Unable to find 'openssl/opensslconf.h'
        error: command 'swig' failed with exit status 1
        Complete output from command /vagrant/venv/bin/python2.6 -c "import setuptools, tokenize;__file__='/vagrant/venv/build/M2Crypto/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-3vnOUl-record/install-record.txt --single-version-externally-managed --compile --install-headers /vagrant/venv/include/site/python2.6:
        running install
    
    running build
    
    running build_py
    
    creating build
    
    creating build/lib.linux-x86_64-2.6
    
    creating build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/RC4.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/BIO.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/callback.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/DSA.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/ftpslib.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/Engine.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/EVP.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/BN.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/DH.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/util.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/EC.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/httpslib.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/Rand.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/__init__.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/m2.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/m2xmlrpclib.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/RSA.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/threading.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/ASN1.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/SMIME.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/m2urllib2.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/Err.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/X509.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/AuthCookie.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    copying M2Crypto/m2urllib.py -> build/lib.linux-x86_64-2.6/M2Crypto
    
    creating build/lib.linux-x86_64-2.6/M2Crypto/SSL
    
    copying M2Crypto/SSL/Session.py -> build/lib.linux-x86_64-2.6/M2Crypto/SSL
    
    copying M2Crypto/SSL/Cipher.py -> build/lib.linux-x86_64-2.6/M2Crypto/SSL
    
    copying M2Crypto/SSL/Connection.py -> build/lib.linux-x86_64-2.6/M2Crypto/SSL
    
    copying M2Crypto/SSL/Checker.py -> build/lib.linux-x86_64-2.6/M2Crypto/SSL
    
    copying M2Crypto/SSL/__init__.py -> build/lib.linux-x86_64-2.6/M2Crypto/SSL
    
    copying M2Crypto/SSL/TwistedProtocolWrapper.py -> build/lib.linux-x86_64-2.6/M2Crypto/SSL
    
    copying M2Crypto/SSL/SSLServer.py -> build/lib.linux-x86_64-2.6/M2Crypto/SSL
    
    copying M2Crypto/SSL/Context.py -> build/lib.linux-x86_64-2.6/M2Crypto/SSL
    
    copying M2Crypto/SSL/timeout.py -> build/lib.linux-x86_64-2.6/M2Crypto/SSL
    
    copying M2Crypto/SSL/cb.py -> build/lib.linux-x86_64-2.6/M2Crypto/SSL
    
    copying M2Crypto/SSL/ssl_dispatcher.py -> build/lib.linux-x86_64-2.6/M2Crypto/SSL
    
    creating build/lib.linux-x86_64-2.6/M2Crypto/PGP
    
    copying M2Crypto/PGP/PublicKey.py -> build/lib.linux-x86_64-2.6/M2Crypto/PGP
    
    copying M2Crypto/PGP/__init__.py -> build/lib.linux-x86_64-2.6/M2Crypto/PGP
    
    copying M2Crypto/PGP/RSA.py -> build/lib.linux-x86_64-2.6/M2Crypto/PGP
    
    copying M2Crypto/PGP/PublicKeyRing.py -> build/lib.linux-x86_64-2.6/M2Crypto/PGP
    
    copying M2Crypto/PGP/packet.py -> build/lib.linux-x86_64-2.6/M2Crypto/PGP
    
    copying M2Crypto/PGP/constants.py -> build/lib.linux-x86_64-2.6/M2Crypto/PGP
    
    running build_ext
    
    building 'M2Crypto.__m2crypto' extension
    
    swigging SWIG/_m2crypto.i to SWIG/_m2crypto_wrap.c
    
    swig -python -I/usr/include/python2.6 -I/usr/include -includeall -o SWIG/_m2crypto_wrap.c SWIG/_m2crypto.i
    
    SWIG/_evp.i:9: Error: Unable to find 'openssl/opensslconf.h'
    
    SWIG/_ec.i:7: Error: Unable to find 'openssl/opensslconf.h'
    
    error: command 'swig' failed with exit status 1
    
    ----------------------------------------
    Cleaning up...
    Command /vagrant/venv/bin/python2.6 -c "import setuptools, tokenize;__file__='/vagrant/venv/build/M2Crypto/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-3vnOUl-record/install-record.txt --single-version-externally-managed --compile --install-headers /vagrant/venv/include/site/python2.6 failed with error code 1 in /vagrant/venv/build/M2Crypto
    Traceback (most recent call last):
      File "/vagrant/venv/bin/pip", line 11, in <module>
        sys.exit(main())
      File "/vagrant/venv/lib/python2.6/site-packages/pip/__init__.py", line 185, in main
        return command.main(cmd_args)
      File "/vagrant/venv/lib/python2.6/site-packages/pip/basecommand.py", line 161, in main
        text = '\n'.join(complete_log)
    UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 39: ordinal not in range(128)
    

What could I be missing?


Answer: The path is wrong. Try to do this:

    
    
    cd /usr/include/openssl/
    ln -s ../x86_64-linux-gnu/openssl/opensslconf.h .
    

