#!/bin/bash

# Copyright 2012-2017 Audrius Kažukauskas <audrius@neutrino.lt>
# Copyright 2017, 2018, 2019, 2023, 2024  Patrick J. Volkerding, Sebeka, MN, USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=python3.12
SRCNAM=Python
VERSION=${VERSION:-3.12.11}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i686 ;;
    arm*) export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) export ARCH=$( uname -m ) ;;
  esac
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD.txz"
  exit 0
fi

TMP=${TMP:-/tmp}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

# Don't set any SLKCFLAGS here, or OPT="$SLKCFLAGS" before the ./configure.
# Python gets the compile options right without any help.
if [ "$ARCH" = "i686" ]; then
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  LIBDIRSUFFIX="64"
elif [ "$ARCH" = "arm" ]; then
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "armel" ]; then
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "aarch64" ]; then
  LIBDIRSUFFIX="64"
else
  LIBDIRSUFFIX=""
fi

set -e

# Location for Python site-packages:
SITEPK=$PKG/usr/lib${LIBDIRSUFFIX}/${PRGNAM}/site-packages
# same as above without $PKG
TOOLSDIR=/usr/lib${LIBDIRSUFFIX}/${PRGNAM}/site-packages

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $SRCNAM-$VERSION
tar xf $CWD/$SRCNAM-$VERSION.tar.xz
cd $SRCNAM-$VERSION

# Fix python3 path in cgi.py.
sed -i "1s|^#.*/usr/local/bin/python|#!/usr/bin/${PRGNAM}|" Lib/cgi.py

chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \+ -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \+

./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --with-platlibdir=lib${LIBDIRSUFFIX} \
  --mandir=/usr/man \
  --docdir=/usr/doc/$PRGNAM-$VERSION \
  --enable-ipv6 \
  --enable-shared \
  --with-computed-gotos \
  --enable-optimizations \
  --with-dbmliborder=gdbm:ndbm \
  --with-system-expat \
  --with-system-ffi \
  --enable-loadable-sqlite-extensions \
  --without-ensurepip \
  --with-tzpath=/usr/share/zoneinfo \
  --build=$ARCH-slackware-linux

make
make install DESTDIR=$PKG

find $PKG/usr/bin $PKG/usr/lib${LIBDIRSUFFIX}/pkgconfig -type l -delete

# We don't want a large libpython*.a.
find $PKG -name "libpython*.a" -exec rm --verbose "{}" \;

# Make sure we have a non-platform-specific site-packages directory:
mkdir -p $PKG/usr/lib/${PRGNAM}/site-packages

# We'll install the python-tools under site-packages.
mkdir -p $SITEPK
cp -a Tools/* $SITEPK

# Remove DOS batch/exe files.
find $PKG \( -name '*.exe' -o -name '*.bat' \) -exec rm -f '{}' \+

# Fix permissions on dynamic libraries.
find $PKG -type f -perm 555 -exec chmod 755 '{}' \+

# Install docs.
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a README.rst LICENSE Misc $PKG/usr/doc/$PRGNAM-$VERSION
# Delete stuff that we don't need to package:
rm -f $PKG/usr/doc/$PRGNAM-$VERSION/Misc/{HISTORY,*.in,*.wpr,python.man,svnmap.txt}
mv $SITEPK/README $PKG/usr/doc/$PRGNAM-$VERSION/README.python-tools
( cd $PKG/usr/doc/$PRGNAM-$VERSION ; ln -sf $TOOLSDIR Tools )

# Fix possible incorrect permissions.
( cd $PKG
  find . -type d -exec chmod 755 "{}" \+
  find . -perm 640 -exec chmod 644 "{}" \+
  find . -perm 750 -exec chmod 755 "{}" \+
)

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

find $PKG/usr/man -type f -exec gzip -9 {} \+
find $PKG/usr/man -type l -delete

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE