diff --git a/bldpkg b/bldpkg
index f25871d..3eb3da7 100755
--- a/bldpkg
+++ b/bldpkg
@@ -56,8 +56,7 @@ sourcebuildfile() {
     source "$buildfile"
   else
   # We expect a filename as part of -f argument
-    echo "[ERROR] No build file to source from! If you used -f argument, make sure it is"
-    echo "[ERROR] the first argument pointing to a build file before any other argument."
+    echo "[ERROR] No build file to source from!"
     exit 1
   fi
 }
@@ -73,7 +72,7 @@ setbuildfile() {
 
 # Function to invoke bash shell's -x mode for troubleshooting
 tracemode() {
-  set -x
+  set -xv
 }
 
 # Function to enable building of packages with debug symbols using -g3 argument
@@ -94,13 +93,12 @@ displaysummary() {
 
 # Function to set number of make jobs, overrides those in bldpkg.conf
 setcputhreads() {
-  cputhreads0="$OPTARG"
+  cputhreads="$OPTARG"
   # Validate if the argument is a number. If not, throw an error and exit.
-  if ! echo "$cputhreads0" | egrep -q '^[0-9]+$' ; then
+  if ! echo "$cputhreads" | egrep -q '^[0-9]+$' ; then
     echo "[ERROR] Invalid CPU job number. Please try again."
     exit 1
   fi
-  cputhreads="$cputhreads0"
 }
 
 # Generate sha512sums in the build file
@@ -802,7 +800,7 @@ mkandenterbuilddir() {
   rm -rf "$pkg"
      
   # Now create all essential build-related directories
-  mkdir -p "$tmp" "$pkg" "$pkgdocs" "$pkgdest" 
+  mkdir -p "$tmp" "$pkg/install" "$pkgdocs" "$pkgdest" 
 
   echo "[INFO] Leaving source directory $srcdir"
   echo "[INFO] Entering build directory $tmp"
@@ -926,7 +924,6 @@ mkfinalpkg() {
   done
 
   echo "[INFO] Copying post-install files..."
-  mkdir -p "$pkg/install"
 
   [[ -e $srcdir/doinst.sh ]] && cp "$srcdir/doinst.sh" "$pkg/install/"
 
@@ -1011,10 +1008,10 @@ EOF
   SECONDS=0
 
   # Store package location inside this variable:
-  packlocation="$pkgdest/$app-$version-$arch-$build.$pkgext"
+  newpkglocation="$pkgdest/$app-$version-$arch-$build.$pkgext"
   
   # Finally create the package
-  /bin/makepkg -l y -c n "$packlocation"
+  /bin/makepkg -l y -c n "$newpkglocation"
   pkgstatus=$?
 
   echo "[INFO] Leaving staging directory $pkg"
@@ -1191,7 +1188,7 @@ prepbuildoutput() {
       bldstatus="$(echo -e "$colourg"'Successful! :-D' "$colourd")"
 
       # Determine the compressed size
-      packsize="$(du -bk "$packlocation" | awk '{print $1}')"
+      packsize="$(du -bk "$newpkglocation" | awk '{print $1}')"
 
       # Determine the uncompressed size
       packusize="$(echo $packusize1)"
@@ -1326,10 +1323,10 @@ EOF
 promptuser() {
   
   # Extract package at the end of a build if autoextract is set to 1
-  if [[ $autoextract = 1 ]] && [[ -z $autobuild ]] && [[ -n $packlocation ]] ; then
+  if [[ $autoextract = 1 ]] && [[ -z $autobuild ]] && [[ -n $newpkglocation ]] ; then
     echo "[INFO] Extracting package installer inside $srcdir/test..."
     mkdir -p "$srcdir/test"
-    tar xvf "$packlocation" -C "$srcdir/test"
+    tar xvf "$newpkglocation" -C "$srcdir/test"
     echo ""
     echo "[INFO] '"$app"' package installer file successfully extracted"
   fi
@@ -1337,7 +1334,7 @@ promptuser() {
   # Prompt the user at the end of a build whether to extract contents of a newly-built installer into a subdirectory
   # called "test" inside the package source directory the build was manually initiated from. Has no effect on
   # autobuilds since they are simply installed right away.
-  if [[ $extractprompt = 1 ]] && [[ -z $autobuild ]] && [[ -n $packlocation ]] ; then
+  if [[ $extractprompt = 1 ]] && [[ -z $autobuild ]] && [[ -n $newpkglocation ]] ; then
     while true ; do
       echo
       echo "[NOTIFY] '"$app"' has been built and extractprompt is enabled in"
@@ -1351,7 +1348,7 @@ promptuser() {
       case $yn in
         [Yy]* ) echo "[INFO] Wise choice :-) ";
                mkdir -p "$srcdir/test"
-               tar xvf "$packlocation" -C "$srcdir/test"
+               tar xvf "$newpkglocation" -C "$srcdir/test"
                echo ""
                echo "[INFO] '"$app"' package installer file successfully extracted"
                break;;
@@ -1362,7 +1359,7 @@ promptuser() {
 
   # Prompt the user at the end of a successful build whether to install the newly created package. Has no effect on
   # autobuilds because packages there are installed automatically.
-  if [[ $installprompt = 1 ]] && [[ -z $autobuild ]] && [[ -n $packlocation ]] ; then
+  if [[ $installprompt = 1 ]] && [[ -z $autobuild ]] && [[ -n $newpkglocation ]] ; then
     while true ; do 
       echo
       echo "[NOTIFY] '"$app"' successfully built and installprompt is enabled in the bldpkg.conf file."
@@ -1370,7 +1367,7 @@ promptuser() {
       read -r -p "[NOTIFY] Would you like to install/upgrade it? (y/N) " yn
       case $yn in 
         [Yy]* ) echo "[INFO] Wise choice :-) "
-               upgradepkg --install-new "$packlocation"
+               upgradepkg --install-new "$newpkglocation"
                break;;
              *) echo "[INFO] Nope? Alright." ; exit 0 ;;
       esac
diff --git a/genpackagelist b/genpackagelist
new file mode 100755
index 0000000..93a8302
--- /dev/null
+++ b/genpackagelist
@@ -0,0 +1,125 @@
+#!/bin/sh
+# Originally written by Jason Woodward, https://software.jaos.org/
+# Modified for use in SMLinux
+# 
+# This script creates PACKAGES.TXT, CHECKSUMS.md5 and .meta files for use with slapt-get
+# Typical usage: put all the final packages inside a directory. copy genpackagelist to
+# that directory and then run 
+# "./genpackagelist all"
+# 
+# This will create PACKAGES.TXT{.gz},
+# CHECKSUMS.md5{.gz} and all the .meta files. Copy those files to a suitable directory
+# which will be queried by slapt-get.
+
+function gen_packages_txt {
+ echo '' > PACKAGES.TXT
+ find . -type f -name '*.meta' -exec cat {} \; >> PACKAGES.TXT
+  cat PACKAGES.TXT | gzip -9 -c - > PACKAGES.TXT.gz
+}
+
+function gen_md5_checksums {
+  echo '' > CHECKSUMS.md5
+  find . -type f -regextype posix-egrep -regex '.*\.[tgblzikx]+$' -exec md5sum {} \; >> CHECKSUMS.md5
+  cat CHECKSUMS.md5 | gzip -9 -c - > CHECKSUMS.md5.gz
+}
+
+function gen_meta {
+  if [ ! -f $1 ]; then
+    echo "File not found: $1"
+    exit 1;
+  fi
+
+  if [ "`echo $1|grep -E '(.*{1,})\-(.*[\.\-].*[\.\-].*).[tgblzikx]{2,}[ ]{0,}$'`" == "" ]; then
+	  return;
+  fi
+
+  PKGEXT=${1##*.}
+  case $PKGEXT in
+    tgz) DECOMPRESS=gzip ;;
+    tbz) DECOMPRESS=bzip2 ;;
+    tlz) DECOMPRESS=lzip ;;
+    txz) DECOMPRESS=xz ;;
+  esac
+ 
+  echo "Generating meta files, package lists and md5sum files for $1..."
+
+  # Create a unique temporary directory and untar the package inside it
+  TEMPDIR=$(mktemp -d $1.XXXXXX)
+  tar -xf $1 -C"$TEMPDIR"
+
+  NAME=$(echo $1 | sed -re "s/(.*\/)(.*.$PKGEXT)$/\2/")
+  LOCATION=$(echo $1 | sed -re "s/(.*)\/(.*.$PKGEXT)$/\1/")
+  SIZE=$(du -bk $1 | awk '{print $1}')
+  USIZE=$(expr $( $DECOMPRESS -dc $1 | wc -c) / 1024)
+
+  if [ ! -f "$TEMPDIR/install/slack-required" ]; then
+    echo "WARNING: slack-required was not found inside $1"
+  else
+    REQUIRED="$(cat "$TEMPDIR/install/slack-required" | xargs -r -iZ echo -n "Z," | sed -e "s/,$//")"
+  fi
+
+  if [ -f "$TEMPDIR/install/slack-conflicts" ]; then
+    CONFLICTS="$(cat "$TEMPDIR/install/slack-conflicts" | xargs -r -iZ echo -n "Z," | sed -e "s/,$//")"
+  fi
+
+  if [ -f "$TEMPDIR/install/slack-conflicts" ]; then
+    SUGGESTS=$(cat "$TEMPDIR/install/slack-suggests" | xargs -r)
+  fi
+ 
+  METAFILE=${NAME%$PKGEXT}meta
+  echo "PACKAGE NAME:  $NAME" > $LOCATION/$METAFILE
+  if [ -n "$DL_URL" ]; then
+ 	 echo "PACKAGE MIRROR:  $DL_URL" >> $LOCATION/$METAFILE
+  fi
+  echo "PACKAGE LOCATION:  $LOCATION" >> $LOCATION/$METAFILE
+  echo "PACKAGE SIZE (compressed):  $SIZE K" >> $LOCATION/$METAFILE
+  echo "PACKAGE SIZE (uncompressed):  $USIZE K" >> $LOCATION/$METAFILE
+  echo "PACKAGE REQUIRED:  $REQUIRED" >> $LOCATION/$METAFILE
+  echo "PACKAGE CONFLICTS:  $CONFLICTS" >> $LOCATION/$METAFILE
+  echo "PACKAGE SUGGESTS:  $SUGGESTS" >> $LOCATION/$METAFILE
+
+  echo "PACKAGE DESCRIPTION:" >> $LOCATION/$METAFILE
+  if [ ! -f "$TEMPDIR/install/slack-desc" ]; then
+    echo "WARNING: slack-desc was not found inside $1. "
+  else
+    cat "$TEMPDIR/install/slack-desc" | grep -E '\w+\:'| grep -v '^#' >> $LOCATION/$METAFILE
+  fi
+  echo "" >> $LOCATION/$METAFILE
+  echo "Done!"
+  rm -rf $TEMPDIR
+}
+
+case "$1" in
+ pkg)
+  if [ -n "$2" ]; then
+    gen_meta $2
+  else
+    echo "$0 [pkg [file]|all|new|PACKAGESTXT|MD5]"
+  fi
+ ;;
+ all)
+  for pkg in `find . -type f -regex '.*\.[tgblzikx]+$' -print`
+  do
+    gen_meta $pkg
+  done
+  $0 PACKAGESTXT
+  $0 MD5
+ ;;
+ new)
+  for pkg in `find . -type f -regex '.*\.[tgblzikx]+$' -print`
+  do
+   if [ ! -f ${pkg%${pkg##*.}}meta ]; then
+     gen_meta $pkg
+   fi
+  done
+ ;;
+ PACKAGESTXT)
+  gen_packages_txt
+ ;;
+ MD5)
+  gen_md5_checksums
+ ;;
+ *)
+  echo "$0 [pkg [file]|all|new|PACKAGESTXT|MD5]"
+ ;;
+esac