#!/bin/bash

# © Copyright IBM Corporation 2025.

# LICENSE: Apache License, Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0)

#

#Instructions

#Get Build script : wget https://raw.githubusercontent.com/linux-on-ibm-z/scripts/master/Python3/3.14.2/build_python3.sh

#Execute build script: bash build_python3.sh

set -e -o pipefail

PACKAGE_NAME="python"

PACKAGE_VERSION="3.14.2"

TESTS="false"

FORCE="false"

CURDIR="$(pwd)"

LOG_FILE="${CURDIR}/logs/${PACKAGE_NAME}-${PACKAGE_VERSION}-$(date +"%F-%T").log"

BUILD_ENV="${CURDIR}/setenv.sh"

trap "" 1 ERR

if [ ! -d "${CURDIR}/logs/" ]; then

mkdir -p "${CURDIR}/logs/"

fi

source "/etc/os-release"

function prepare() {

printf -- 'Preparing installation \n' |& tee -a "${LOG_FILE}"

if command -v "sudo" >/dev/null; then

printf -- 'Sudo : Yes\n'

else

printf -- 'Sudo : No \n'

printf -- 'Install sudo from repository using apt, yum or zypper based on your distro. \n'

exit 1

fi

printf -- "Preparing the installation for Python ${PACKAGE_VERSION}\n"

if [[ "$FORCE" == "true" ]]; then

printf -- 'Force attribute provided hence continuing with install without confirmation message \n' |& tee -a "${LOG_FILE}"

else

# Ask user for prerequisite installation

printf -- "\n\nAs part of the installation some dependencies might be installed, \n"

while true; do

read -r -p "Do you want to continue (y/n) ? : " yn

case $yn in

[Yy]*)

printf -- 'User responded with Yes. \n' |& tee -a "${LOG_FILE}"

break

;;

[Nn]*) exit ;;

*) echo "Please provide confirmation to proceed." ;;

esac

done

fi

}

function cleanup() {

rm "$CURDIR/Python-${PACKAGE_VERSION}.tgz"

printf -- 'Cleaned up the artifacts\n' >>"${LOG_FILE}"

}

function configureAndInstall() {

printf -- 'Configuration and Installation started \n' |& tee -a "${LOG_FILE}"

#Download Source code

cd "${CURDIR}"

wget "https://www.python.org/ftp/${PACKAGE_NAME}/${PACKAGE_VERSION}/Python-${PACKAGE_VERSION}.tgz"

tar -xzf "Python-${PACKAGE_VERSION}.tgz"

#Configure and build and install Python3

cd "$CURDIR/Python-${PACKAGE_VERSION}"

./configure

make

sudo make install

printf -- '\nInstalled python successfully \n' >>"${LOG_FILE}"

#Run tests

runTest

#Cleanup

cleanup

#Verify python installation

if command -V "$PACKAGE_NAME"${PACKAGE_VERSION:0:1} >/dev/null; then

printf -- "%s installation completed. Please check the Usage to start the service.\n" "$PACKAGE_NAME" |& tee -a "$LOG_FILE"

else

printf -- "Error while installing %s, exiting with 127 \n" "$PACKAGE_NAME"

exit 127

fi

}

function runTest() {

set +e

if [[ "$TESTS" == "true" ]]; then

printf -- "TEST Flag is set, continue with running test \n" >> "$LOG_FILE"

cd "$CURDIR/Python-${PACKAGE_VERSION}"

sudo make test 2>&1| tee -a test_results.log

grep "Tests result: SUCCESS\|Tests result: FAILURE then SUCCESS" test_results.log

if [[ $? != 0 ]]; then

printf -- "Tests execution failed. \n"

else

printf -- "Tests completed successfully. \n"

fi

fi

set -e

}

function logDetails() {

printf -- '**************************** SYSTEM DETAILS *************************************************************\n' >"$LOG_FILE"

if [ -f "/etc/os-release" ]; then

cat "/etc/os-release" >>"$LOG_FILE"

fi

cat /proc/version >>"$LOG_FILE"

printf -- '*********************************************************************************************************\n' >>"$LOG_FILE"

printf -- "Detected %s \n" "$PRETTY_NAME"

printf -- "Request details : PACKAGE NAME= %s , VERSION= %s \n" "$PACKAGE_NAME" "$PACKAGE_VERSION" |& tee -a "$LOG_FILE"

}

# Print the usage message

function printHelp() {

echo

echo "Usage: "

echo " bash build_python3.sh [-d <debug>] [-v package-version] [-y install-without-confirmation] [-t install-with-tests] "

echo " default: If no -v specified, latest version will be installed "

echo "This script supports Python version $PACKAGE_VERSION"

echo

}

while getopts "h?dytv:" opt; do

case "$opt" in

h | \?)

printHelp

exit 0

;;

d)

set -x

;;

v)

PACKAGE_VERSION="$OPTARG"

LOG_FILE="${CURDIR}/logs/${PACKAGE_NAME}-${PACKAGE_VERSION}-$(date +"%F-%T").log"

;;

y)

FORCE="true"

;;

t)

TESTS="true"

;;

esac

done

function printSummary() {

printf -- '\n***************************************************************************************\n'

printf -- "Run python: \n"

printf -- " python3 -V (To check the version) \n\n"

printf -- '***************************************************************************************\n'

printf -- '\n'

}

###############################################################################################################

logDetails

prepare

DISTRO="$ID-$VERSION_ID"

case "$DISTRO" in

"rhel-8.10" | "rhel-9.4" | "rhel-9.6" | "rhel-9.7" | "rhel-10.0" | "rhel-10.1")

printf -- "Installing %s %s for %s \n" "$PACKAGE_NAME" "$PACKAGE_VERSION" "$DISTRO" |& tee -a "${LOG_FILE}"

sudo yum install -y bzip2-devel gcc gcc-c++ gdbm-devel libdb-devel libffi-devel libuuid-devel make ncurses-devel openssl-devel tar tk-devel wget xz zlib-devel diffutils xz-devel patch

configureAndInstall |& tee -a "${LOG_FILE}"

;;

"sles-15.7" | "sles-16.0")

printf -- "Installing %s %s for %s \n" "$PACKAGE_NAME" "$PACKAGE_VERSION" "$DISTRO" |& tee -a "${LOG_FILE}"

sudo zypper ref -s

sudo zypper install -y gawk gcc gcc-c++ gdbm-devel libbz2-devel libffi-devel libopenssl-devel libuuid-devel make ncurses-devel tar tk-devel wget xz-devel zlib-devel gzip libtirpc-devel

configureAndInstall |& tee -a "${LOG_FILE}"

;;

"ubuntu-22.04" | "ubuntu-24.04" | "ubuntu-25.10")

printf -- "Installing %s %s for %s \n" "$PACKAGE_NAME" "$PACKAGE_VERSION" "$DISTRO" |& tee -a "${LOG_FILE}"

sudo apt-get update

sudo DEBIAN_FRONTEND=noninteractive apt-get install -y gcc g++ libbz2-dev libdb-dev libffi-dev libgdbm-dev liblzma-dev libncurses-dev libreadline-dev libsqlite3-dev libssl-dev make tar tk-dev uuid-dev wget xz-utils zlib1g-dev patch

configureAndInstall |& tee -a "${LOG_FILE}"

;;

*)

printf -- "%s not supported \n" "$DISTRO" |& tee -a "${LOG_FILE}"

exit 1

;;

esac

printSummary |& tee -a "${LOG_FILE}"