system/rtkit: Added (Realtime Policy and Watchdog Daemon).

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

system/rtkit/README

@@ -0,0 +1,12 @@
+rtkit is a dbus service needed for pipewire to apply for a realtime
+priority.
+
+It needs a separate user to run.
+
+  groupadd -g 378 rtkit
+  useradd -u 378 -s /bin/false -d /var/lib/rtkit \
+    -g rtkit rtkit
+
+In principle, pipewire may function without this service, but it
+helps to placate some error messages present on Slackware 15.0
+default setup.

system/rtkit/rtkit.SlackBuild

@@ -0,0 +1,131 @@
+#!/bin/bash
+
+# Slackware build script for rtkit
+
+# Copyright 2023, Lockywolf
+# 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=rtkit
+VERSION=${VERSION:-0.13}
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+PKGTYPE=${PKGTYPE:-tgz}
+
+if [ -z "$ARCH" ]; then
+  case "$( uname -m )" in
+    i?86) ARCH=i586 ;;
+    arm*) ARCH=arm ;;
+       *) ARCH=$( uname -m ) ;;
+  esac
+fi
+
+if [ ! -z "${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}
+
+if [ "$ARCH" = "i586" ]; then
+  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "i686" ]; then
+  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "x86_64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+elif [ "$ARCH" = "aarch64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+else
+  SLKCFLAGS="-O2"
+  LIBDIRSUFFIX=""
+fi
+
+MUID=${MUID:-378}
+MGID=${MGID:-378}
+
+if ! getent group rtkit 2>&1 > /dev/null; then
+  echo "  You must have an rtkit group to run this script."
+  echo "    # groupadd -g $MGID rtkit"
+  exit 1
+elif ! getent passwd rtkit 2>&1 > /dev/null; then
+  echo "  You must have a rtkit user to run this script."
+  echo "    # useradd -u $MUID -g $MGID -d /var/lib/rtkit rtkit"
+  exit 1
+fi
+
+
+set -e
+
+rm -rf $PKG
+mkdir -p $TMP $PKG $OUTPUT
+cd $TMP
+rm -rf $PRGNAM-$VERSION
+tar xvf $CWD/$PRGNAM-$VERSION.tar.*z
+cd $PRGNAM-$VERSION
+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 {} +
+
+mkdir build
+cd build
+  CFLAGS="$SLKCFLAGS" \
+  CXXFLAGS="$SLKCFLAGS" \
+  meson .. \
+    --buildtype=release \
+    --infodir=/usr/info \
+    --libdir=/usr/lib${LIBDIRSUFFIX} \
+    --localstatedir=/var \
+    --mandir=/usr/man \
+    --prefix=/usr \
+    --sysconfdir=/etc \
+    -Dstrip=true
+  "${NINJA:=ninja}"
+  DESTDIR=$PKG $NINJA install
+cd ..
+
+rm -f $PKG/{,usr/}lib${LIBDIRSUFFIX}/*.la
+
+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
+
+find $PKG/usr/man -type f -exec gzip -9 {} \;
+for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
+
+mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a \
+  README    LICENSE      \
+  $PKG/usr/doc/$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
+
+cd $PKG
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE

system/rtkit/rtkit.info

@@ -0,0 +1,10 @@
+PRGNAM="rtkit"
+VERSION="0.13"
+HOMEPAGE="https://github.com/heftig/rtkit/"
+DOWNLOAD="https://github.com/heftig/rtkit/releases/download/v0.13/rtkit-0.13.tar.xz"
+MD5SUM="90939b9886d1998fa5b15f6109bfd1ae"
+DOWNLOAD_x86_64=""
+MD5SUM_x86_64=""
+REQUIRES=""
+MAINTAINER="Lockywolf"
+EMAIL="for_sbo.rtkit_2023-11-16@lockywolf.net"

system/rtkit/slack-desc

@@ -0,0 +1,19 @@
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.
+# Line up the first '|' above the ':' following the base package name, and
+# the '|' on the right side marks the last column you can put a character in.
+# You must make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':' except on otherwise blank lines.
+
+     |-----handy-ruler------------------------------------------------------|
+rtkit: rtkit (dbus service to assign realtime priority to processes)
+rtkit:
+rtkit: RealtimeKit is a D-Bus system service that changes the
+rtkit: scheduling policy of user processes/threads to SCHED_RR
+rtkit: (i.e. realtime scheduling mode) on request. It is intended to
+rtkit: be used as a secure mechanism to allow real-time scheduling to
+rtkit: be used by normal user processes.
+rtkit:
+rtkit:
+rtkit:
+rtkit: