#!/bin/bash
ulimit -s unlimited
shopt -s extglob

# python2.SlackBuild
# Heavily based on the original Slackware build script,
# Modified by Stuart Winter <mozes@slackware.com> for ARMedslack.
# 24-Jun-2004
#
# Copyright 2008, 2009, 2012, 2013, 2016, 2018, 2020  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.

# Record toolchain & other info for the build log:
slackbuildinfo

# Paths to skeleton port's source & real Slackware source tree:
slackset_var_cwds

# Temporary build locations:
export TMPBUILD=$TMP/build-$PKGNAM
export PKG=$TMP/package-$PKGNAM
mkpkgdirs # Delete & re-create temporary directories then cd into $TMPBUILD

# Determine the CFLAGS for the known architectures:
# Don't set any SLKCFLAGS here, or OPT="$SLKCFLAGS" before the ./configure.
# Python gets the compile options right without any help.
case $ARCH in
   arm|aarch64)
            export EXTRA_CFLAGS="$SLKCFLAGS" ## Take them from the slackdev config
esac

# Capitalised source archive name:
SRCNAM=Python

# 2.6, 2.7 etc:
BRANCH_VERSION=$(echo $VERSION | cut -f 1,2 -d . )

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

# Extract source:
tar xvvf $CWD/$SRCNAM-$VERSION.tar.!(*sign|*asc|*sig)
cd $SRCNAM-*/ || failextract
slackhousekeeping

# Enable built-in SQLite module to load extensions
sed -i "/SQLITE_OMIT_LOAD_EXTENSION/d" setup.py

# If there's no pip2 on the system, assume python2 is not installed and
# bootstrap from scratch:
if [ ! -x /usr/bin/pip2 ]; then
   # If system we're building on already has Python2 with pip in site-packages,
   # ignore it and install pip anyway.
   sed -i 's|\("install",\)|\1 "--ignore-installed",|' Lib/ensurepip/__init__.py
   ENSUREPIP="--with-ensurepip"
 else
   ENSUREPIP="--without-ensurepip"
fi

# Clean up after the patches:
find . -name "*.orig" -exec rm "{}" \;

zcat $CWD/python.readline.set_pre_input_hook.diff.gz | patch -p1 --verbose || exit 1
# We don't want a large libpython*.a:
zcat $CWD/python.no-static-library.diff.gz | patch -p1 --verbose || exit 1

# Install to lib64 instead of lib and
# Python must report /usr/lib64/python2.7/site-packages as python_lib_dir:
# This is the same patch as for x86_64
if [ "$SLKPORTARCH" = "aarch64" ]; then
   zcat $CWD/python.x86_64.diff.gz | patch -p1 --verbose || exit 1
fi

# Configure:
#OPT="$SLKCFLAGS" \
./configure \
   --prefix=/usr \
   --mandir=/usr/man \
   --libdir=/usr/lib${LIBDIRSUFFIX} \
   --docdir=/usr/doc/${PKGNAM}-$VERSION \
   --with-threads \
   --with-system-expat \
   --with-system-ffi \
   --enable-ipv6 \
   --enable-shared \
   --enable-unicode=ucs4 \
   $ENSUREPIP \
   --build=${SLK_ARCH_BUILD} || failconfig

# Build:
make $NUMJOBS || make || failmake

# Install into package:
make install DESTDIR=$PKG || failinstall

# Remove Windows garbage:
find $PKG -name "*.exe" -exec rm -f "{}" \;
find $PKG -name "*.dll" -exec rm -f "{}" \;

# This conflicts with python3. We'll assume the python3 version is more
# up-to-date and just get rid of it:
rm -f $PKG/usr/bin/2to3

# We don't want these now:
rm -f $PKG/usr/bin/python
rm -f $PKG/usr/bin/python-config

# Don't package this. We want /usr/bin/pip in the main python-pip package to be
# the python3 version:
rm -f $PKG/usr/bin/pip

# It's tempting to get rid of this entirely, but we'll leave the -2.7 versioned
# binary:
rm -f $PKG/usr/bin/easy_install

# Install some python-demo files:
mkdir -p $PKG/usr/doc/python2-$VERSION
cp -a Demo $PKG/usr/doc/python2-$VERSION

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

mkdir -p $PKG/usr/doc/python2-$VERSION
mv -fv $SITEPK/README $PKG/usr/doc/python2-$VERSION/README.python-tools
( cd $PKG/usr/doc/python2-$VERSION
  ln -sf $TOOLSDIR Tools
)

# Install docs:
mkdir -p $PKG/usr/doc/python2-$VERSION/Documentation
cp -a README LICENSE $PKG/usr/doc/python2-$VERSION
cp -a Misc $PKG/usr/doc/python2-$VERSION
tar xf $CWD/python-$VERSION-docs-text.tar.!(*sign|*asc|*sig)
mv -fv python-${VERSION}-docs-text/* $PKG/usr/doc/python2-$VERSION/Documentation

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

( cd $PKG/usr/man
  if [ -r python${BRANCH_VERSION}.1.gz ] ; then
         ln -vfs python${BRANCH_VERSION}.1.gz python.1.gz
  fi
)

# If python2 isn't already installed, we need to bootstrap it to the system now:
if [ ! -x /usr/bin/pip2 ]; then
  ( cd $PKG
    echo "Bootstrapping..."
    tar cf - . | ( cd / ; tar xf - )
  )
fi

# Bundle the very last pip for python2:
tar xf $CWD/pip-20.3.tar.lz || failextract
cd pip-20.3
fix_perms
python2 setup.py install --root=$PKG || failinstall
# Don't package this. We want /usr/bin/pip in the main python-pip package to be
# the python3 version:
rm -f $PKG/usr/bin/pip
mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION/pip-20.3
cp -a *.txt PKG-INFO README.rst \
  $PKG/usr/doc/$PKGNAM-$VERSION/pip-20.3
cd ..

# Bundle the very last setuptools for python2:
tar xf $CWD/setuptools-44.1.1.tar.lz || failextract
cd setuptools-44.1.1
fix_perms
# Install setuptools to the system if it's not there:
if [ ! -d /usr/lib${LIBDIRSUFFIX}/python2.7/site-packages/setuptools/version.py ]; then
  python2 setup.py install --root=/ || failinstall
fi
python2 setup.py install --root=$PKG || failinstall
# It's tempting to get rid of this entirely, but we'll leave the -2.7 versioned
# binary:
rm -f $PKG/usr/bin/easy_install
mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION/setuptools-44.1.1
cp -a CHANGES.rst PKG-INFO README.rst docs/*.txt \
  $PKG/usr/doc/$PKGNAM-$VERSION/setuptools-44.1.1
# If there's a CHANGES.rst, installing at least part of the recent history
# is useful, but don't let it get totally out of control:
if [ -r CHANGES.rst ]; then
  DOCSDIR=$(echo $PKG/usr/doc/${PKGNAM}-$VERSION/setuptools-44.1.1)
  cat CHANGES.rst | head -n 1000 > $DOCSDIR/CHANGES.rst
  touch -r CHANGES.rst $DOCSDIR/CHANGES.rst
fi
cd ..

# Apply generic Slackware packaging policies:
cd $PKG
slackstripall   # strip all .a archives and all ELFs
slack_delete_lafiles # delete usr/lib{,64}/*.la
#slackstriprpaths     # strip rpaths
slackgzpages -i # compress man & info pages and delete usr/info/dir
slackslack      # chown -R root:root, chmod -R og-w, slackchown, slack644docs
slackdesc       # install slack-desc and doinst.sh
slackmp         # run makepkg -l y -c n

# Perform any final checks on the package:
cd $PKG
slackhlinks     # search for any hard links