#!/bin/bash

# Copyright 2006, 2007, 2008, 2009, 2010, 2015, 2018, 2021  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=svgalib
VERSION=${VERSION:-$(echo $PKGNAM-*.tar.?z | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
BUILD=${BUILD:-7}

# 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

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

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

cd $TMP
rm -rf ${PKGNAM}-${VERSION}
tar xvf $CWD/${PKGNAM}-$VERSION.tar.?z || exit 1
cd ${PKGNAM}-$VERSION || exit 1

# Make sure ownerships and permissions are sane:
chown -R root:root .
find . -perm 666 -exec chmod 644 {} \+
find . -perm 664 -exec chmod 644 {} \+
find . -perm 600 -exec chmod 644 {} \+
find . -perm 444 -exec chmod 644 {} \+
find . -perm 400 -exec chmod 644 {} \+
find . -perm 440 -exec chmod 644 {} \+
find . -perm 777 -exec chmod 755 {} \+
find . -perm 775 -exec chmod 755 {} \+
find . -perm 511 -exec chmod 755 {} \+
find . -perm 711 -exec chmod 755 {} \+
find . -perm 555 -exec chmod 755 {} \+
find . -name "*.h" -exec chmod 644 {} \+

zcat $CWD/svgalib.prefix.diff.gz | patch -p1 --verbose || exit 1
zcat $CWD/svgalib-1.9.25-kernel-2.6.26.diff.gz | patch -p1 --verbose || exit 1
zcat $CWD/svgalib.nohelper.diff.gz | patch -p1 --verbose || exit 1
zcat $CWD/svgalib-1.9.25-round_gtf_gtfcalc_c.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/svgalib-1.9.25-vga_getmodenumber.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/svgalib-1.9.25-quickmath-h-redefinitions.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/svgalib-1.9.21-demos.patch.gz | patch -p1 --verbose || exit 1
zcat $CWD/svgalib-1.9.25.no_asm.patch.gz | patch -p1 --verbose || exit 1

# Build and install - spamming your partition first...:
make install NO_HELPER=y || exit 1
make install \
 TOPDIR=$PKG \
  prefix=$PKG/usr \
  mandir=$PKG/usr/man \
  sharedlibdir=$PKG/usr/lib${LIBDIRSUFFIX} \
  MANFORMAT=compressed \
  NO_HELPER=y \
  || exit 1

# Build demos:
make demoprogs || exit 1

# Install demos:
mkdir -p $PKG/usr/share/svgalib-demos
( cd demos
  # this will produce a harmless error... hey, some of these demos might come back, right?
  cp fun testgl speedtest mousetest vgatest scrolltest testlinear keytest testaccel accel forktest eventtest spin bg_test printftest joytest mjoytest bankspeed lineart linearspeed addmodetest svidtune linearfork cursor vgatweak buildcsr rwpage \
  linuxlogo.bitmap \
  $PKG/usr/share/svgalib-demos
  chmod 755 $PKG/usr/share/svgalib-demos/*
)

# Add a documentation directory:
mkdir -p $PKG/usr/doc/${PKGNAM}-$VERSION
cp -a \
  0-README LICENSE README svgalib.lsm \
  $PKG/usr/doc/${PKGNAM}-$VERSION
( cd doc
  cp -a \
  0-INSTALL CHANGES DESIGN Driver-programming-HOWTO README.joystick \
  README.keymap README.multi-monitor README.patching README.vesa TODO dual-head-howto \
  $PKG/usr/doc/${PKGNAM}-$VERSION
)

# Make sure the package contains all library symlinks:
( cd $PKG/usr/lib${LIBDIRSUFFIX}
  ldconfig -l *
)

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

cd $PKG
/sbin/makepkg -l y -c n $TMP/$PKGNAM-$VERSION-$ARCH-$BUILD.txz