Changes to bldpkg:

-> Replaced basename and dirname with bash's built-in pattern matching
-> Added code to prompt for resuming an existing build in the presence of .$app.extraction.complete
-> Fixed some comments relating to $resumepkgbuild
Changes to bldpkg.conf:
-> Updated pkg names in tmpfsexceptionlist and packagesrequiringswap array
-> Added validatecompilers, compilerverbosity and autoresumepkgbuild variables

bldpkg

@@ -181,7 +181,7 @@ srcdir="$PWD"
 
 # Presume that the build file name will match the name of the parent directory
 # unless otherwise overridden using -f <buildfile>
-buildfile="$(basename $srcdir).SMBuild"
+buildfile="${srcdir##*/}.SMBuild"
 
 # Find all required files. If either of them don't exist, abort.
 rqfiles=( installpkg upgradepkg sha512sum patch find findmnt patch tput bc tar )
@@ -398,7 +398,7 @@ applypatch() {
   fi
 
   # Get relative path of the patch file
-  relativepath=$(basename $patchfile)
+  relativepath=${patchfile##*/}
   info "Applying patch '$relativepath'.."
   # We use if/else to determine if the patch applied successfully
   if ! patch -p1 < "$patchfile" ; then
@@ -896,7 +896,13 @@ fixbuilddirpermissions() {
   chown -R root.root .
   find -L .  -perm /111 -a \! -perm 755 -a -exec chmod 755 {} \+ -o \
    \! -perm /111 -a \! -perm 644 -a -exec chmod 644 {} \+ || true
-  touch ".$app.extraction.complete" 
+
+  # Only put $app.extraction.complete file if $extractioncomplete is unset.
+  # This ensures that the file is only set once.
+  if [[ -z $extractioncomplete ]] ; then
+    touch ".$app.extraction.complete" 
+    extractioncomplete=1
+  fi
 }
 
 # Function to calculate elapsed build time. runtime takes the $SECONDS variable as an argument. $SECONDS is an
@@ -1520,25 +1526,40 @@ interruptoutput() {
 trap "prepbuildoutput" EXIT
 trap "interruptoutput" INT
 
+# Prompt the user to resume the current build if $app.extraction.complete is found inside $tmp
+# and if $resumepkgbuild from getopts is unset.
+buildresumepath="$(find $tmp -type f -name .$app.extraction.complete)"
+if [[ -f $buildresumepath ]] && [[ -z $resumepkgbuild ]] && [[ $autoresumepkgbuild = 1 ]] ; then
+  echo "[NOTIFY] Found $buildresumepath."
+  echo "[NOTIFY] Hit 'Y' to resume building from current src,"
+  echo "[NOTIFY] Hit 'N' to start building from scratch by removing old src."
+  read -r -p "[NOTIFY] Would you like to resume building? " yn
+  case "$yn" in 
+    N|n|No|no) info "Nope? Alright." ; 
+               unset resumepkgbuild ;;
+            *) info "Wise choice :-) "
+               resumepkgbuild=1 ;;
+  esac
+fi
+
 # If $resumepkgbuild variable is not set in getopts, only then execute prepbuilddir variable
 if [[ -z $resumepkgbuild ]] ; then
   prepbuilddir
 fi
 
-# If $resumepkgbuild is set, execute mkandenterbuilddir function to enter the build directory
-# This is being done because mkandenterbuilddir is part of prepbuilddir function in the build
-# file and ignoring prepbuilddir will not cause mkandenterbuilddir to be invoked separately unless the build
-# system is told to.
+# If $resumepkgbuild is set either in getopts or from the user prompt above, execute mkandenterbuilddir 
+# function to enter the build directory. This is being done because mkandenterbuilddir is part of prepbuilddir 
+# function in the build file and ignoring prepbuilddir will not cause mkandenterbuilddir to be invoked 
+# separately unless the build system is told to.
 if [[ -n $resumepkgbuild ]] ; then
   mkandenterbuilddir
-  buildresumepath="$(find $tmp -type f -name .$app.extraction.complete)"
 
   # fixbuilddirpermissions places a file ".$app.extraction.complete". Get the directory name that houses that file
   # and cd into it
   if [[ ! -f $buildresumepath ]] ; then
     err "Can't resume build of '"$app"'! Are you certain the source was extracted completely?" 
   else
-    cd $(dirname $buildresumepath)
+    cd ${buildresumepath%/*}
   fi
 fi
 build

bldpkg.conf

@@ -162,15 +162,15 @@ checkdependencies=0
 # This array lists the packages whose sources will not be extracted and 
 # compiled inside tmpfs, if tmpfs is <= 2GB. If your tmpfs is >= 2GB, empty
 # out this entire list.
-tmpfsexceptionlist=( mozjs nodejs firefox wxwidgets palemoon qemu dovecot gdb gimp gnumeric \
+tmpfsexceptionlist=( mozjs nodejs firefox wxwidgets palemoon qemu dovecot gdb gnumeric \
 gtk+2 gtk+3 guile llvm mariadb mesa mesa-demos mupdf perl postfix python2 \
 python3 rtorrent spice python-lxml kernel libreoffice mono \
-qtwebengine kernel-source rust webkitgtk )
+qtwebengine kernel-source rust webkitgtk boost go llvm-runtimes )
 
 # This array lists the packages which require additional swap for
 # compilation to prevent the system from becoming completely unresponsive 
 # for want of more memory.
-packagesrequiringswap=( mozjs nodejs firefox palemoon qemu gdb gimp gnumeric gtk+2 \
+packagesrequiringswap=( mozjs nodejs firefox palemoon qemu gdb gnumeric gtk+2 \
 gtk+3 guile llvm mariadb mesa mupdf libtorrent rtorrent \
 qtwebengine )
 
@@ -190,3 +190,14 @@ htmloutput=1
 # Invoke the audit daemon for logging write accesses to system directories
 # outside the build and staging directory
 useauditd=0
+
+# Validate distcc, ccache and sccache depending on which compiler is enabled 
+# globally above
+validatecompilers=0
+
+# Be verbose about compiler output. Make and Cmake currently supported.
+compilerverbosity=0
+
+# Whether to prompt a user to resume a build if 
+# $tmp/src/.$app.extraction.complete is found or to build the package from scratch
+autoresumepkgbuild=0