Install Python from Source in Ubuntu

export OPSSL_VER=3.0.8
export OPSSL_INSTALL_DIR=/opt/OpenSSL/$OPSSL_VER

wget https://www.openssl.org/source/openssl-$OPSSL_VER.tar.gz
wget https://www.openssl.org/source/openssl-$OPSSL_VER.tar.gz.sha256
sha256sum openssl-$OPSSL_VER.tar.gz
cat openssl-$OPSSL_VER.tar.gz.sha256
rm openssl-$OPSSL_VER.tar.gz.sha256

tar -xzvf openssl-$OPSSL_VER.tar.gz
cd openssl-$OPSSL_VER/
./config --prefix=$OPSSL_INSTALL_DIR --openssldir=$OPSSL_INSTALL_DIR shared zlib 2>&1 | tee config.log
make -j 2>&1 | tee make.log
make test 2>&1 | tee make-test.log

sudo mkdir -p $OPSSL_INSTALL_DIR
sudo chown -R $USER $OPSSL_INSTALL_DIR

make install 2>&1 | tee make-install.log

sudo chown -R root:root $OPSSL_INSTALL_DIR

sudo apt-get install libbz2-dev libncurses5-dev libncursesw5-dev libgdbm-dev  liblzma-dev libsqlite3-dev tk-dev uuid-dev libreadline-dev libffi-dev


export OPSSL_VER=3.0.8
export OPSSL_INSTALL_DIR=/opt/OpenSSL/$OPSSL_VER

export LDFLAGS=-L$OPSSL_INSTALL_DIR/lib64
export LD_LIBRARY_PATH=$OPSSL_INSTALL_DIR/lib64

# ensure you export these env vars before configure!!!

# Go to python.org download corresponding versino of .xz format
# usually you should check which version is the newest

export PY_VER=3.8.12
export PY_VER=3.10.13
export PY_VER=3.12.2

export PY_INSTALL_DIR=/opt/Python/$PY_VER

wget https://www.python.org/ftp/python/$PY_VER/Python-$PY_VER.tar.xz --no-check-certificate



tar -xvf Python-$PY_VER.tar.xz && cd Python-$PY_VER
LDFLAGS="${LDFLAGS} -Wl,-rpath=$OPSSL_INSTALL_DIR/lib64" ./configure \
    --enable-optimizations --enable-loadable-sqlite-extensions \
    --enable-ipv6 --enable-big-digits \
    --with-lto --with-pymalloc \
    --with-doc-strings --with-openssl=$OPSSL_INSTALL_DIR \
    --enable-shared \
    --prefix=$PY_INSTALL_DIR 2>&1 | tee configure.log

# check configure.log
# check if configure log shows that ssl support is correctly installed! (check the last part of the log to see if any module is not correctly installed)
grep SSL configure.log

make -j 2>&1 | tee make.log


# check make.log
# make sure no module fails to build! except _dbm only
tail -n 25 make.log



sudo mkdir -p $PY_INSTALL_DIR
sudo chown -R $USER $PY_INSTALL_DIR

make install 2>&1 | tee make-install.log

sudo chown -R root:root $PY_INSTALL_DIR


# Copy or create modulefiles
# sudo cp -r modulefiles/Python /etc/modulefiles

# optional
sudo ln -s $PY_INSTALL_DIR/bin/python3 $PY_INSTALL_DIR/bin/python
sudo ln -s $PY_INSTALL_DIR/bin/pip3 $PY_INSTALL_DIR/bin/pip

sudo $PY_INSTALL_DIR/bin/python3 -m pip install --upgrade pip

# install frequently used packages
sudo $PY_INSTALL_DIR/bin/python3 -m pip install pandas polars scikit-learn numpy matplotlib requests