diff --git a/bldpkg b/bldpkg
index b655f5b..91f6655 100755
--- a/bldpkg
+++ b/bldpkg
@@ -109,6 +109,13 @@ else
   exit 1
 fi
 
+# Error out if globalccache and globalsccache are set in the /etc/bldpkg.conf
+if [[ $globalccache = 1 ]] && [[ $globalsccache = 1 ]] ; then
+  echo "[ERROR] Please only enable either ccache or sccache in /etc/bldpkg.conf"
+  echo "[ERROR] at the same time, not both."
+  exit 1
+fi
+
 # Function to validate the build file.
 validatebldfile() {
   local buildfile
@@ -318,8 +325,7 @@ if [[ $genchecksum = 1 ]] ; then
 
   files=( *.tar.* *.zip *.t?z *.patch *.diff *.c *.h )
 
-  # For loop that searches for files matching the above extension 
-  # and prints them to the bottom of the build file
+  # For loop that searches for files matching the above extension and prints them to the bottom of the build file
   for file in "${files[@]}" ; do
     if [[ -f $file ]] ; then
       sha512sum "$file" >> "$buildfile"
@@ -477,13 +483,6 @@ fi
 # Discard the test file
 [[ -e "$parenttmp/.smlinuxwritetest" ]] && rm -f "$parenttmp/.smlinuxwritetest"
 
-# Determine if $tmpfsdir is listed inside $protecteddirectories array
-if inarray "${parenttmp}" "${protecteddirectories[@]}" ; then
-  echo "############ ATTENTION ############"
-  echo "[ERROR] parenttmp VARIABLE IS SET TO '$tmpfsdir' WHICH IS A PROTECTED DIRECTORY!! EXITING!!"
-  exit 1
-fi
-
 # If htmloutput is set to 1, echo $app, $version and $build as file names inside the parent build directory. 
 # This will output into an HTML file so that the basic status of the build process (whether started, stopped, 
 # interrupted or failed) can be viewed in the web browser. 
@@ -505,7 +504,7 @@ fi
 # Validate compressor and set extension
 validpkgextensions=( tgz tbz tlz txz )
 if ! inarray "${pkgext}" "${validpkgextensions[@]}" ; then
-  echo "[ERROR] '$pkgext' is not a valid package extension for an SMLinux installer file."
+  echo "[ERROR] '$pkgext' is not a valid pkg extension for an SMLinux installer file."
   exit 1
 fi
 
@@ -596,7 +595,6 @@ if [[ $usetmpfs = 1 ]] && [[ -n $tmpfsdir ]] && [[ -z $tmpfscheckfailed ]] ; the
 
     # In the absence of tmpfs, we use the normal directory 
     tmp="$nontmpfsdir/$app.src"
-    readonly pkg
     pkg="${pkg:-$nontmpfsdir/package-$app}"
   else
     # We compile inside tmpfsdir. Set the tmpfsenabledforthispackage variable here to inform build
@@ -622,6 +620,20 @@ else
   pkg=${pkg:-$nontmpfsdir/package-$app}
 fi
 
+
+if inarray "${pkg}" "${protecteddirectories[@]}" ; then
+  echo "############ ATTENTION ############"
+  echo "[ERROR] 'pkg' VARIABLE IS SET TO '$pkg' WHICH IS A PROTECTED DIRECTORY! EXITING!"
+  exit 1
+fi
+
+# Also check tmp directory in advance
+if inarray "${tmp}" "${protecteddirectories[@]}" ; then
+  echo "############ ATTENTION ############"
+  echo "[ERROR] 'tmp' VARIABLE IS SET TO '$tmp' WHICH IS A PROTECTED DIRECTORY! EXITING!"
+  exit 1
+fi
+
 # Validate and export $cputhreads as MAKEFLAGS variable 
 if [[ -n $cputhreads ]]; then
   # export the user-defined number
@@ -798,6 +810,7 @@ fi
 
 # Validate everything related to sccache if globalccache is set
 if [[ $globalsccache = 1 ]]; then
+   
   if [[ ! -x $sccachebinpath ]] ; then
     echo "[ERROR] Oops! sccache binary was not found but building with it" 
     echo "[ERROR] was requested! Either ensure sccache is in your "'$PATH'" or"
@@ -959,14 +972,8 @@ mkandenterbuilddir() {
   pkgdocs="$pkg/share/doc/$app-$version"
 
   # Remove any old pkg staging directory left by any previous build having same application name
-  if ! inarray "${pkg}" "${protecteddirectories[@]}" ; then
-    rm -rf "$pkg"
-  else
-    echo "############ ATTENTION ############"
-    echo "[ERROR] 'pkg' VARIABLE IS SET TO '$pkg' WHICH IS A PROTECTED DIRECTORY! EXITING!"
-    exit 1
-  fi
-     
+  rm -rf "$pkg"
+  
   # Now create all essential build-related directories
   mkdir -p "$tmp" "$pkg/install" "$pkgdocs" "$pkgdest" 
 
@@ -1228,6 +1235,12 @@ EOF
 
   # Terminate auditd daemon
   terminateauditd
+  
+  # Terminate sccache
+  if [[ $globalsccache = 1  ]] ; then
+    echo "[INFO] Terminating sccache"
+    /bin/sccache --stop-server
+  fi
 
   echo "[INFO] Leaving staging directory $pkg"
 
@@ -1271,24 +1284,12 @@ EOF
 
   # Delete the build directory if preservebuilddir is set to 0
   if [[ $preservebuilddir = 0 ]] ; then
-    if ! inarray "${tmp}" "${protecteddirectories[@]}" ; then
-      rm -rf "$tmp"
-    else
-      echo "############ ATTENTION ############"
-      echo "[ERROR] 'tmp' VARIABLE IS SET TO '$tmp' WHICH IS A PROTECTED DIRECTORY! EXITING!"
-      exit 1
-    fi
+    rm -rf "$tmp"
   fi
 
   # Delete the package staging directory if preservepackagedir is set to 0
   if [[ $preservepackagedir = 0 ]] ; then
-    if ! inarray "${pkg}" "${protecteddirectories[@]}" ; then
-      rm -rf "$pkg"
-    else
-      echo "############ ATTENTION ############"
-      echo "[ERROR] 'pkg' VARIABLE IS SET TO '$pkg' WHICH IS A PROTECTED DIRECTORY! EXITING!"
-      exit 1
-    fi
+    rm -rf "$pkg"
   fi
 }
 
@@ -1585,6 +1586,12 @@ interruptoutput() {
   # Terminate auditd daemon
   terminateauditd
 
+  # Terminate sccache
+  if [[ $globalsccache = 1 ]] ; then
+    echo "[INFO] Terminating sccache"
+    /bin/sccache --stop-server
+  fi
+
   # If installprompt and extractprompt are set and the prompt is invoked after a successful build, hitting
   # ctrl-C will only set the above sm variable repeatedly and won't return user to the shell because
   # of the interrupt (SIGINT) trap set way below. Putting exit 0 is a decent way to get out of that prompt