Building Python 3.7.1 - SSL module failed

Question

Building Python 3.7 from source runs into following error:

Failed to build these modules:
_hashlib              _ssl                                     

Could not build the ssl module!
Python requires an OpenSSL 1.0.2 or 1.1 compatible libssl with X509_VERIFY_PARAM_set1_host().
LibreSSL 2.6.4 and earlier do not provide the necessary APIs, https://github.com/libressl-portable/portable/issues/381

I tried so many workarounds from other stackoverflow-questions, but it doesnt work. I build newest OpenSSL and LibreSSL from source. OpenSSL path is: "/usr/local/ssl" with version OpenSSL 1.0.2p.

./configure --with-openssl=/usr/local/ssl/
(./configure CPPFLAGS="-I/usr/local/ssl/include" LDFLAGS="-L/usr/local/ssl/lib")
make 
make altinstall

My system: Ubuntu 12.04.5 LTS

Any ideas?

Your Ubuntu version looks extremely old. Consider upgrading to 18.04 LTS, it will make many issues like this to simply disappear. — mvp, Mar 10 '19 at 05:11
Possible duplicate of [ImportError: No module named \_ssl](https://stackoverflow.com/questions/5128845/importerror-no-module-named-ssl) — Sunil Kumar, Aug 21 '19 at 09:03

score 43 · Answer 1 · answered Aug 21 '19 at 07:46

43

I solved it after 3 days only because of this blog. with python 3.7.4 openssl 1.1.0 centOS 6.

here is the summary :

First, some prerequisites:

sudo apt-get install build-essential checkinstall libreadline-gplv2-dev libncursesw5-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev

use yum instead of apt-get if using centos linux.

Install ssl 1.0.2 or higher.

    cd /usr/src
    curl https://www.openssl.org/source/openssl-1.0.2o.tar.gz | tar xz
    cd openssl-1.0.2o
    ./config shared --prefix=/usr/local/
    sudo make
    sudo make install

We will need to pass /usr/src/openssl-1.0.2o into the Python configure script.

mkdir lib
cp ./*.{so,so.1.0.0,a,pc} ./lib

Now proceed with installing Python:

    cd /usr/src
    sudo wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tgz
    sudo tar xzf Python-3.7.0.tgz
    cd Python-3.7.0
    ./configure --with-openssl=/usr/src/openssl-1.0.2o --enable-optimizations
    sudo make
    sudo make altinstall

To test it out, run python3.7 and input:

import ssl
ssl.OPENSSL_VERSION

Hope it helps!

answered Aug 21 '19 at 07:46

Sunil Kumar

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Very useful getting the openssl from source. I had to make one change, setting the export LD_LIBRARY_PATH=/usr/src/openssl-1.0.2o/lib before running the configure command. This was Ubuntu 14 with Python 3.8.2. Working, yay ! – blissweb May 09 '20 at 08:08
Only worked after export LD_LIBRARY as @blissweb mentioned above! Using Debian 8 – Xidh Jun 24 '21 at 14:33
Use `rpath` to bake the library path into the executable so that it is not necessary to set the library path each time a Python executable is needed; e.g., pip, virtualenv, etc. Here is an example: `LDFLAGS="${LDFLAGS} -Wl,-rpath=/usr/local/ssl/lib" CFLAGS="${CFLAGS} -I/usr/local/ssl/include" ./configure --prefix=/home/lawlist/opt/python_3_9_13 --with-openssl=/usr/local/ssl` The key ingredients to a successful Python build and to avoid a `_hashlib` failure when building same were to use the `shared` flag when building `openssl` and use the `--with-openssl` flag when building Python. – lawlist Oct 27 '22 at 23:33

nori · Answer 2 · 2022-04-06T21:44:48.553

Compiling openssl

Download your openssl tarball, unzip, and then ensure that the install directory is named openssl.

I placed mine in /usr/local/openssl, so I'll use that in my example.

sudo mv openssl-1.0.2u /usr/local/openssl && cd /usr/local/openssl
sudo make distclean
sudo ./config -fPIC -shared
sudo make && sudo install

Now, add the openssl shared library to your PATH.

vim ~/.profile Go export LD_LIBRARY_PATH="/usr/local/openssl/lib:$LD_LIBRARY_PATH" :wq

Compiling Python3

The key here is understanding that the path you define with --with-openssl= is where Python looks for /openssl/lib. You need to give Python the parent directory of the openssl directory.

That means that if you set --with-openssl=/usr/local/openssl your make install will fail even though the make logs show that openssl is fine!

--enable-optimizations is irrelevant but recommended - longer make for 10% faster Python code is a good tradeoff.

--prefix= is merely where I'd like python3 to install, if you didn't know.

sudo make distclean

Edit your python setup file

vim /{yourpythonsource}/Modules/Setup

Uncomment out the following lines and ensure that your SSL variable points to your openssl directory. In mine, it was looking for the directory 'ssl' instead of 'openssl.'

<pre><code># Socket module helper for SSL support; you must comment out the other </code> 

<pre><code># socket line above, and possibly edit the SSL variable: </code>

<code>SSL=/usr/local/openssl
_ssl _ssl.c \
-DUSE_SSL -I$(SSL)/include -I$(SSL)/include/openssl \
-L$(SSL)/lib -lssl -lcrypto</code>

sudo ./configure --with-openssl=/usr/local --prefix=/opt/python-3.7.1
sudo make && sudo make install

Thank you. Without edit `vim /{yourpythonsource}/Modules/Setup` as you advised i could'nt build python3.8 for raspberry pi 3 "Raspbian GNU/Linux 8 (jessie)" — dmgl, May 26 '20 at 22:53
Why do you need to add ssl shared library to PATH? Did you mean to add it to LD_LIBRARY_PATH? — Pavel Chernikov, Jun 10 '20 at 18:49
For me the build step for `openssl` was `yum install -y tcl tcl-devel tk tk-devel` `git clone git://git.openssl.org/openssl.git` `cd openssl/` `./config --prefix=/usr --openssldir=/etc/ssl --libdir=lib shared zlib-dynamic -Wl,-rpath=/usr/local/ssl -Wl,--enable-new-dtags` as recommended in [wiki.openssl Compilation and Installation ↪ Using RPATHs](https://wiki.openssl.org/index.php/Compilation_and_Installation#Using_RPATHs). — Mavaddat Javid, Nov 08 '21 at 22:14
Very late response, but you're right, I shouldn't have added a ../lib to the $PATH. — nori, Apr 06 '22 at 21:42

score 11 · Answer 3 · answered Mar 03 '19 at 20:26

While this might not be the best answer, I will share how I solved this problem.

First of all, in my case, OpenSSL did not build correctly, as make test did return errors (and consequently Python gave this error). This was solved by installing a newer version of Perl and then installing OpenSSL again (configure, make, etc).
Use this command before using ./configure

export LD_LIBRARY_PATH=/path/to/openssl/lib:$LD_LIBRARY_PATH
At the configure command, include the library:

LDFLAGS="-L/path/to/openssl/lib" ./configure (all your preferred options) --with-openssl=/path/to/openssl

as apparently the option for configure does not convey the message to the C compiler which needs it.

Am not sure whether option 2 and 3 are needed simultaneously, but I did so and it worked.

Work for me after tried a few other answers. I just didn't use the lib folder in openssl (e.g. just LDFLAGS="-L/path/to/openssl") — Soid, Sep 09 '21 at 04:35
I have tried everything I found on line, and nothing worked until I tried your "LDFLAGS=-L/path/to/openssl/lib" suggestion during ./configure. I already did everything with LD_LIBRARY_PATH and all other suggestions, and none worked until this. Thank you for finally being the one to save my day! — HippoMan, Oct 15 '22 at 01:06

lvii · Answer 4 · 2023-08-08T03:55:25.750

There was NO need to edit Modules/Setup file built python with customed openssl.

I have built python 3.11.0-rc2 under Debian 9 stretch follow the official document:

https://docs.python.org/3/using/unix.html?highlight=openssl#custom-openssl

To use your vendor’s OpenSSL configuration and system trust store, locate the directory with openssl.cnf file or symlink in /etc. On most distribution the file is either in /etc/ssl or /etc/pki/tls. The directory should also contain a cert.pem file and/or a certs directory.
$ find /etc/ -name openssl.cnf -printf "%h\n"
/etc/ssl
Download, build, and install OpenSSL. Make sure you use install_sw and NOT install. The install_sw target does NOT override openssl.cnf.
$ curl -O https://www.openssl.org/source/openssl-VERSION.tar.gz
$ tar xzf openssl-VERSION
$ pushd openssl-VERSION
$ ./config \
--prefix=/usr/local/custom-openssl \
--libdir=lib \
--openssldir=/etc/ssl
$ make -j1 depend
$ make -j8
$ make install_sw
$ popd
Build Python with custom OpenSSL (see the configure --with-openssl and --with-openssl-rpath options)
$ pushd python-3.x.x
$ ./configure -C \
--with-openssl=/usr/local/custom-openssl \
--with-openssl-rpath=auto \
--prefix=/usr/local/python-3.x.x
$ make -j8
$ make altinstall

ssl module check OK after installed :

# /usr/local/python-3.11.0-rc2/bin/python3.11 -c 'import ssl; print(ssl.OPENSSL_VERSION)'
OpenSSL 1.1.1q  5 Jul 2022

score 2 · Answer 5 · answered Apr 01 '22 at 02:58

2

I ran into this problem with LMDE 5 (running Debian Bullseye) compiling Python 3.10.4. It was fixed by doing:

sudo apt-get install libssl-dev

answered Apr 01 '22 at 02:58

DanDevost

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veganaiZe · Answer 6 · 2019-09-05T21:29:37.540

1

Edit setup.py

Find the following lines:

        system_lib_dirs = ['/lib64', '/usr/lib64', '/lib', '/usr/lib']
    system_include_dirs = ['/usr/include']

...and place each folder at the beginning of its respective list.

In my case I had to add: /usr/local/lib and /usr/local/include:

        system_lib_dirs = ['/usr/local/lib', '/lib64', '/usr/lib64', '/lib', '/usr/lib']
    system_include_dirs = ['/usr/local/include', '/usr/include']

Finally: make distclean && ./configure

You may want to ensure that export LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH (or what have you) is added to the very end of /etc/profile and reboot, as well.

edited Sep 05 '19 at 21:29

answered Sep 04 '19 at 18:39

veganaiZe

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5
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Yes. I had to combine this `make distclean && ./configure` advice with that of @adam-winter above. Otherwise, gcc warns about "`coverage_mismatch`". – Mavaddat Javid Nov 08 '21 at 03:47
Didn't solve it for me. OpenSSL 1.1.1n 15 Mar 2022 (Library: OpenSSL 1.1.1k FIPS 25 Mar 2021) Could not build the ssl module! Python requires a OpenSSL 1.1.1 or newer – pfa Mar 29 '22 at 22:50

Adam Winter · Answer 7 · 2020-06-30T17:14:31.240

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On CentOS / Linux 2 if you install openssl using

sudo yum install -y openssl-devel

then the library is installed to /usr/local/lib64, and you can configure Python as follows:

./configure --enable-shared --with-openssl=/usr/local/lib64

there are step-by-step instructions here: How to Install Latest (2020) Django to AWS EC2 Linux 2 Instance and Serve w/ Apache Hello World

edited Jun 30 '20 at 17:14

answered Jun 30 '20 at 17:04

Adam Winter

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Nice one. Your advice solved my SSL problem on `library/amazonlinux:latest` Docker image. `yum install -y openssl-devel` `./configure --enable-shared --with-openssl=/usr/local/lib64 --enable-optimizations` – Mavaddat Javid Nov 08 '21 at 03:40
7

Now there is also this one: `yum install -y openssl11-devel` - `Python 3.10` requires `OpenSSL 1.1.1` or newer. – Tomasz Hławiczka Dec 28 '21 at 15:08
@TomaszHławiczka https://stackoverflow.com/questions/71951779/python-3-10-building-with-ssl-enabled-with-open-ssl-1-1-1 I could not manage to have it built from 3.10 Can you please let me know, where I am going wrong – anshuk_pal Apr 21 '22 at 09:12

score 0 · Answer 8 · edited Oct 22 '21 at 06:20

0

Met same issue, looks configure of Python3 can't work well.

If you have installed the latest openssl, make sure the path of OPENSSL_LDFLAGS is correct in Makefile, below is my env case

OPENSSL_LDFLAGS=-L/usr/local/lib64

edited Oct 22 '21 at 06:20

Yu Hao

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answered Oct 22 '21 at 03:33

joeyyu

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score 0 · Answer 9 · edited Apr 30 '22 at 15:17

Execute till download python (3.10.4 is what i tried) from the link below https://computingforgeeks.com/install-latest-python-on-centos-linux/

Upgrade openssl as documented in https://cloudwafer.com/blog/installing-openssl-on-centos-7/

modify $python_home/Modules/Setup
Update the OPENSSL location and uncomment the below lines
--------------------------------------------
OPENSSL=/usr/local/ssl
_ssl _ssl.c \
    -I$(OPENSSL)/include -L$(OPENSSL)/lib \
    -lssl -lcrypto

--------------------------------------------

Continue the installation steps from https://computingforgeeks.com/install-latest-python-on-centos-linux/

Hope it helps somebody.. fyi: I was installing this on a centos7 ec2 instance as a part of installing ansible.

score 0 · Answer 10 · answered Jun 26 '23 at 08:53

0

after make and make install openssl, as you can justopenssl version, edit python configure sudo ./configure --with-openssl-rpath=auto --enable-optimizations, and then make and make install python

answered Jun 26 '23 at 08:53

sky

1

score 0 · Answer 11 · answered Jul 09 '23 at 09:53

how i managed to fix it for python 3.11.4: Centos7

first install openssl:

sudo yum -y groupinstall "Development Tools"
wget https://www.openssl.org/source/openssl-3.0.9.tar.gz
tar xvf openssl-3.0.9.tar.gz
cd openssl-3.0.9/
./config --prefix=/usr/local/openssl --openssldir=/usr/local/openssl
make -j $(nproc)
sudo make install
sudo ldconfig
sudo tee /etc/profile.d/openssl.sh<<EOF
export PATH=/usr/local/openssl/bin:\$PATH
export LD_LIBRARY_PATH=/usr/local/openssl/lib:\$LD_LIBRARY_PATH
EOF
source /etc/profile.d/openssl.sh

next install python:

wget https://www.python.org/ftp/python/3.11.4/Python-3.11.4.tgz
tar xvf Python-3.11.4.tgz
cd Python-3.11*/
LDFLAGS="${LDFLAGS} -Wl,-rpath=/usr/local/openssl/lib" ./configure --with-openssl=/usr/local/openssl 
make
sudo make altinstall

score -1 · Answer 12 · edited Jan 27 '20 at 01:13

-1

Here is a solution on Mac OS X / Homebrew:

brew reinstall openssl
brew unlink openssl && brew link openssl --force  # careful!
export LDFLAGS="-L/usr/local/opt/openssl/lib"
export CPPFLAGS="-I/usr/local/opt/openssl/include"
echo 'export PATH="/usr/local/opt/openssl/bin:$PATH"' >> ~/.bash_profile

Then download your python tarball and do this:

tar xvf Python-3.7.2.tar
cd Python-3.7.2
  ./configure CPPFLAGS="-I/usr/local/opt/openssl/include" LDFLAGS="-L/usr/local/opt/openssl/lib" --prefix=$PWD/Python-3.7.2/mybuild --enable-optimizations

More detai:

https://devguide.python.org/setup/#macos-and-os-x

edited Jan 27 '20 at 01:13

Brad Solomon

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answered Mar 10 '19 at 05:04

Jagat

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The brew reinstall was the only thing that worked in my context, thank you! – w08r Jan 10 '20 at 10:21
2

You should **not** need `brew link openssl --force`. It is dangerous and Brew does not symlink openssl for a good reason: "openssl@1.1 is keg-only, which means it was not symlinked into /usr/local, because openssl/libressl is provided by macOS so don't link an incompatible version." – Brad Solomon Jan 27 '20 at 01:13

Building Python 3.7.1 - SSL module failed

12 Answers12

Compiling openssl

Compiling Python3

Linked