#!/bin/bash

# Slackware build script for sndio

# Copyright 2023 Ivan Kovmir <i@kovmir.eu>
# 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=sndio
VERSION=${VERSION:-1.9.0}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}
NAMVER=$PRGNAM-$VERSION
SNDIO_GID='17'  # Slackware's 'audio' group.
SNDIO_UID='377' # A chosen ID for sndiod user.

if [ -z "$ARCH" ]; then
	case "$(uname -m)" in
		i?86) ARCH=i586 ;;
		arm*) ARCH=arm ;;
		*) ARCH=$(uname -m) ;;
	esac
fi

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

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

# Bail out if user or group isn't valid on your system
# For slackbuilds.org, assigned postgres uid/gid are 377/377
# See http://slackbuilds.org/uid_gid.txt
if ! grep ^sndiod: /etc/passwd 2>&1 > /dev/null; then
  echo "  You must have 'sndiod' user to run this script."
  echo "    # mkdir /var/run/sndiod"
  echo "    # useradd -u $SNDIO_UID -g $SNDIO_GID -d /var/run/sndiod sndiod"
  exit 1
fi

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

set -e

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

INSTPREFIX='/usr'
BINDIR="$INSTPREFIX/bin"         # Binaries
LIBDIR="$INSTPREFIX/lib64"       # Libraries
PKGCONFDIR="$LIBDIR/pkgconfig"   # pkg-config(1) files
INCLUDEDIR="$INSTPREFIX/include" # Headers
MANDIR="$INSTPREFIX/man"         # Man pages

./configure \
	--bindir="$BINDIR" \
	--libdir="$LIBDIR" \
	--pkgconfdir="$PKGCONFDIR" \
	--includedir="$INCLUDEDIR" \
	--mandir="$MANDIR"
make
make DESTDIR="$PKG" PREFIX="$INSTPREFIX" install

# Strip symbols.
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

# Compress man pages.
find "$PKG$INSTPREFIX/man" -type f -exec gzip {} +;

# Some of the sndio's man pages are symlinks to other pages. Copressing man
# pages gives them '.gz' extension, thus, breaking symlinks. The following loop
# creates additional symlinks that redirect the exising links to compressed man
# pages.
linked_mans=('mio_open.3 sio_open.3 sioctl_open.3')
for man in $linked_mans
do
	ln -s "$man.gz" "$PKG/usr/man/man3/$man"
done

mkdir -p "$PKG/install"
mkdir -p "$PKG/usr/doc/$NAMVER"
mkdir -p "$PKG/etc/rc.d"
cat "$CWD/$PRGNAM.SlackBuild" > "$PKG/usr/doc/$NAMVER/$PRGNAM.SlackBuild"
cat "$CWD/README"             > "$PKG/usr/doc/$NAMVER/README"
cat "$CWD/README.SBo"         > "$PKG/usr/doc/$NAMVER/README.SBo"
cat "$CWD/slack-desc"         > "$PKG/install/slack-desc"

# rc script.
cat "$CWD/rc.sndiod" > "$PKG/etc/rc.d/rc.sndiod"
chmod 0755 "$PKG/etc/rc.d/rc.sndiod"

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