#!/bin/bash

# Slackware build script for python3

# Copyright 2012-2017 Audrius Kažukauskas <audrius@neutrino.lt>
# Copyright 2017, 2018, 2019  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)

PKGNAM=python3
SRCNAM=Python
VERSION=$(echo $SRCNAM-*.tar.xz | rev | cut -f 3- -d . | cut -f 1 -d - | rev)
BRANCH_VERSION=$(echo $VERSION | cut -f 1,2 -d . )
BUILD=${BUILD:-1}

NUMJOBS=${NUMJOBS:-" -j$(expr $(nproc) + 1) "}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i586 ;;
    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 "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PKGNAM-$VERSION-$ARCH-$BUILD.txz"
  exit 0
fi

TMP=${TMP:-/tmp}
PKG=$TMP/package-$PKGNAM
rm -rf $PKG
mkdir -p $TMP $PKG

# Don't set any SLKCFLAGS here, or OPT="$SLKCFLAGS" before the ./configure.
# Python gets the compile options right without any help.
if [ "$ARCH" = "i586" ]; then
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "s390" ]; then
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  LIBDIRSUFFIX="64"
elif [ "$ARCH" = "arm" ]; then
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "armel" ]; then
  LIBDIRSUFFIX=""
fi

# 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

cd $TMP
rm -rf $SRCNAM-$VERSION
tar xf $CWD/$SRCNAM-$VERSION.tar.xz || exit 1
cd $SRCNAM-$VERSION || exit 1

zcat $CWD/python3.readline.set_pre_input_hook.diff.gz | patch -p1 --verbose || exit 1
# We don't want a large libpython*.a.
zcat $CWD/python3.no-static-library.diff.gz | patch -p1 --verbose || exit 1

if [ "$ARCH" = "x86_64" ]; then
  # Install to lib64 instead of lib.
  zcat $CWD/python3.x86_64.diff.gz | patch -p1 --verbose || exit 1
fi

# Fix python3 path in cgi.py.
sed -i '1s|^#.*/usr/local/bin/python|#!/usr/bin/python3|' Lib/cgi.py

# If system we're building on already has Python3 with pip in site-packages,
# ignore it and install pip anyway.
sed -i 's|\("install",\)|\1 "--ignore-installed",|' Lib/ensurepip/__init__.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=/tmp/mozilla-thunderbird-build-deps/usr \
  --libdir=/tmp/mozilla-thunderbird-build-deps/usr/lib${LIBDIRSUFFIX} \
  --mandir=/tmp/mozilla-thunderbird-build-deps/usr/man \
  --docdir=/tmp/mozilla-thunderbird-build-deps/usr/doc/$PKGNAM-$VERSION \
  --with-threads \
  --enable-ipv6 \
  --enable-shared \
  --with-system-expat \
  --with-system-ffi \
  --enable-loadable-sqlite-extensions \
  --without-ensurepip \
  --build=$ARCH-slackware-linux || exit 1

make $NUMJOBS || make || exit 1
make install || exit 1