#!/bin/bash

# Slackware build script for memtest86

# Copyright 2012-2022 Kyle Guinn <elyk03@gmail.com>
# 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.

# 20230515 bkw: Modified by SlackBuilds.org, BUILD=4:
# - create a proper top-level source directory (to avoid
#   surprising anyone who expects to find one).
# - hardcode ARCH=i586, since we no longer allow i486. this
#   is strictly a cosmetic change (it only affects the name
#   of the package file, not the contents).

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

PRGNAM=memtest86
VERSION=${VERSION:-4.3.7}
BUILD=${BUILD:-4}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

ARCH=${ARCH:-$(uname -m)}
case $ARCH in
  i?86)   ;; # OK
  x86_64) ;; # OK
  *)      echo "$ARCH is not supported." >&2; exit 1 ;;
esac

# 20230515 bkw: Hardcode this. Even if the package contains code that
# would work on i486, this is the minimum *Slackware supported* CPU it
# will run on.
ARCH=i586

if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

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

DOCS="README*"

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
mkdir -p $PRGNAM-$VERSION
cd $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION-src.tar.gz
chown -R root:root .
chmod -R u+w,go-w,a+rX-st .
cd src

# Permissions and line endings need to be sanitized.
# Required so that memtest86+ backported patches will apply cleanly.
find . -type f -exec chmod -x {} +
find . -name precomp.bin -prune -o \
       -type f -exec sed -i 's/\x0d$//' {} \;

# https://gitweb.gentoo.org/repo/gentoo.git/tree/sys-apps/memtest86+/files
patch -p1 < $CWD/patches/memtest86+-5.01-io-extern-inline.patch
patch -p1 < $CWD/patches/memtest86+-5.01-reboot-def.patch

# The following patches from Gentoo don't apply cleanly and/or have a few
# unnecessary additions or omissions.  This combines and fixes them.
#patch -p1 < $CWD/patches/memtest86+-5.01-hardcoded_cc.patch
#patch -p1 < $CWD/patches/memtest86+-5.01-no-clean.patch
#patch -p1 < $CWD/patches/memtest86+-5.01-test-random-cflags.patch
patch -p1 < $CWD/patches/makefile.diff

# https://bugs.debian.org/779504 -> https://bugs.debian.org/629506
patch -p1 < $CWD/patches/bug_629506_message_15.mbox

# https://bugzilla.opensuse.org/show_bug.cgi?id=1185272
patch -p1 < $CWD/patches/discard-note_gnu_property.patch

# TBD whether these memtest86+ patches should be backported:
# https://sources.debian.org/patches/memtest86+/5.01-3/
# https://bugs.debian.org/250864 suggests that it could be backported.
#patch -p1 < $CWD/patches/multiboot
# https://bugs.debian.org/795421
#patch -p1 < $CWD/patches/memtest86+-test-7-smp.patch

make
install -D -m 0755 memtest $PKG/boot/$PRGNAM-$VERSION
install -D -m 0644 memtest.bin $PKG/boot/$PRGNAM-$VERSION.bin
ln -s $PRGNAM-$VERSION $PKG/boot/$PRGNAM
ln -s $PRGNAM-$VERSION.bin $PKG/boot/$PRGNAM.bin

install -D -m 0755 $CWD/20_memtest86 $PKG/etc/grub.d/20_memtest86.new

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a $DOCS $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

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

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