SlackBuild for menulibre (https://bluesabre.org/projects/menulibre/). Tested in Slackware64 14.2. Slackware Linux

README

MenuLibre is an advanced menu editor that provides modern features
in a clean, easy-to-use interface and full quicklist support. All
without GNOME dependencies, so even lightweight systems can benefit
from the sanity that MenuLibre offers.  MenuLibre is your one-stop
shop for menus in Linux, whether you use Gnome, LXDE, XFCE, or Unity.

doinst.sh

if [ -x /usr/bin/update-desktop-database ]; then
  /usr/bin/update-desktop-database -q usr/share/applications >/dev/null 2>&1
fi

menulibre.info

PRGNAM="menulibre"
VERSION="2.1.4 "
HOMEPAGE="http://www.smdavis.us/projects/menulibre/"
DOWNLOAD="https://launchpad.net/menulibre/2.1/2.1.4/+download/menulibre-2.1.4.tar.gz"
MD5SUM="0e30f24f544f0929621046d17874ecf0"
DOWNLOAD_x86_64=""
MD5SUM_x86_64=""
REQUIRES="python3 python-distutils-extra psutil gtksourceview3 pygobject3 pyxdg"
MAINTAINER=""
EMAIL=""

menulibre.SlackBuild

#!/bin/sh

# Slackware build script for menulibre

# Copyright 2013 Roberto Neri, Palermo, Italy
# 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.

# New maintainer Edward W. Koenig <kingbeowulf@gmail.com>

PRGNAM=menulibre
VERSION=${VERSION:-2.1.4}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
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 .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \;

python3 setup.py install --root=$PKG

mv $PKG/usr/share/man $PKG/usr/
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 AUTHORS COPYING \
  $PKG/usr/doc/$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:-tgz}

slack-desc

# 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------------------------------------------------------|
menulibre: menulibre (Advanced menu editor with quicklist support)
menulibre:
menulibre: An advanced menu editor that provides modern features in a clean,
menulibre: easy-to-use interface and full quicklist support. All without GNOME
menulibre: dependencies, so even lightweight systems can benefit from the sanity
menulibre: that MenuLibre offers. MenuLibre is your one-stop shop for menus in
menulibre: Linux, whether you use Gnome, LXDE, XFCE, or Unity.
menulibre:
menulibre: Homepage: http://www.smdavis.us/projects/menulibre/
menulibre:
menulibre: