Failed to install Python 3.10.6 with user installed OpenSSL

gelu

I am trying to install Python 3.10.6 to upgrade the environments for my applications. Unfortunately it looks like I am unsuccessful. Here's what I tried:

Installed openssl-3.0.5.tar.gz from source in ~/opt/ssl

Configured Python using:

./configure --prefix=$HOME/opt/python-3.10.6 --with-openssl=$HOME/opt/ssl --with-openssl-rpath=auto

Then run make, with the message below:

Following modules built successfully but were removed because they could not be imported:
_hashlib              _ssl

Could not build the ssl module!
Python requires a OpenSSL 1.1.1 or newer
Custom linker flags may require --with-openssl-rpath=auto

The compiled and installed Python cannot use the ssl module to install packages.

I tried to clean everything and reinstall, both OpenSSL and Python 3.10.6. The installation instructions on both the Python website and in a different post on this forum do not specify any other settings or requirements.

The result is the same.

Can someone suggest a possible cause for this behavior and potential solution?

Thank you!

sean

gelu we've recently installed Python 3.10.6 globally on our servers so there's no need to build your own.

Newly-installed Django and uwsgi apps will use Python 3.10 by default. If you have an existing app that you'd like to update to use the new version then you can do so by creating a new Python 3.10 virtualenv in your app directory and then install your project requirements into that, eg:

cd ~/apps/appname
mv env env.old
/usr/local/bin/python3.10 -m venv env
source env/bin/activate
pip install uwsgi
# then pip install your other requirements

If you'd like to build and maintain your own Python anyway, then please give the following steps a try:

PYDIR=$HOME/opt/python-3.10.6
export PATH=$PYDIR/bin:$PATH
export CPPFLAGS="-I$PYDIR/include $CPPFLAGS"

mkdir -p $PYDIR/src
cd $PYDIR/src

# openssl
wget https://www.openssl.org/source/openssl-1.1.1l.tar.gz
tar zxf openssl-1.1.1l.tar.gz
cd openssl-1.1.1l
./config --prefix=$PYDIR
make
make install

# python
wget https://www.python.org/ftp/python/3.10.6/Python-3.10.6.tar.xz
tar xf Python-3.10.6.tar.xz
cd Python-3.10.6
./configure --prefix=$PYDIR
make
make install

johnchriso

gelu I am trying to install Python 3.10.6 to upgrade the environments for my applications. Unfortunately it looks like I am unsuccessful. Here's what I tried:

Installed openssl-3.0.5.tar.gz from source in ~/opt/ssl

Configured Python using:

./configure --prefix=$HOME/opt/python-3.10.6 --with-openssl=$HOME/opt/ssl --with-openssl-rpath=auto

Then run make, with the message below:

Following modules built successfully but were removed because they could not be imported:
_hashlib _ssl

Could not build the ssl module!
Python requires a OpenSSL 1.1.1 or newer
Custom linker flags may require --with-openssl-rpath=auto
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The compiled and installed Python cannot use the ssl module to install packages.

I tried to clean everything and reinstall, both OpenSSL and Python 3.10.6. The installation instructions on both the Python website and in a different post on this forum do not specify any other settings or requirements.

The result is the same.

Can someone suggest a possible cause for this behavior and potential solution?

Thank you!

The issue you're encountering with the Python 3.10.6 installation failing to build the _ssl and _hashlib modules is due to the OpenSSL version. Python 3.10.6 requires OpenSSL 1.1.1 or newer, but you installed OpenSSL 3.0.5. Despite OpenSSL 3.0.x being a newer release, Python's build process might not fully support it without specific configuration adjustments due to differences in API or other compatibility issues.

Here are some potential solutions:

Use a Supported Version of OpenSSL: Downgrade OpenSSL to a version directly supported by Python 3.10.6, such as OpenSSL 1.1.1. This version is known to work with Python 3.10.x without issues. You can download it from the official OpenSSL website or use a package manager if available on your system.
Check for Installation Errors: Ensure that OpenSSL was correctly installed and that Python's ./configure script can find it. Double-check the paths and environment variables.
Specify LDFLAGS and CPPFLAGS: When configuring Python, you may need to explicitly set LDFLAGS and CPPFLAGS to include the directories where OpenSSL libraries and header files are located, respectively. This helps the Python build process find and correctly link against the OpenSSL library.

export LDFLAGS="-L$HOME/opt/ssl/lib"
export CPPFLAGS="-I$HOME/opt/ssl/include"
./configure --prefix=$HOME/opt/python-3.10.6 --with-openssl=$HOME/opt/ssl --with-openssl-rpath=auto

Consult the Python and OpenSSL Documentation: Both Python and OpenSSL have extensive documentation that might offer additional configuration options or troubleshooting steps for building Python with custom OpenSSL versions check it here.
Use a Package Manager: If possible, consider installing Python 3.10.6 through a package manager (like apt on Ubuntu, brew on macOS, or conda for cross-platform). Package managers often handle dependencies like OpenSSL automatically.
Reach Out to the Community: If you continue facing issues, consider asking for help on platforms like Stack Overflow, Python's mailing list, or forums dedicated to your operating system. Provide details about your configuration, steps you've taken, and the exact error messages you're receiving check it here.

Upgrading OpenSSL to a compatible version directly supported by Python 3.10.6 and ensuring the build process can properly locate and link against it should resolve the issue check here.

gelu

sean Thank you! Was not aware of that and running python3 --version returned Python 3.6.8 and I didn't think of trying to run python3.10. The installed Python would do just fine. Thanks again!

Addynext

The error you're facing with the ssl module might be related to the OpenSSL version. Python seems to be looking for 1.1.1 or newer, and there could be a mismatch.

Make sure your OpenSSL installation is solid and correctly configured. Double-check the paths during Python configuration to ensure they align with your installation. Also, verify that your OpenSSL version is indeed 1.1.1 or later.

If the problem persists, try explicitly stating the OpenSSL version during Python configuration. This might help Python recognize the correct OpenSSL version.

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