diff --git a/lib/builder-targets.sh b/lib/builder-targets.sh
index 3ef979f..54e2efb 100644
--- a/lib/builder-targets.sh
+++ b/lib/builder-targets.sh
@@ -16,6 +16,7 @@ builder_config() {
     CMD_unrar="`which unrar`"           ; builder_check_error "Command 'unrar' not installed"
     CMD_zip="`which zip`"               ; builder_check_error "Command 'zip' not installed"
     CMD_lha="`which lha`"               ; builder_check_error "Command 'lha' not installed"
+    CMD_tar="`which tar`"               ; builder_check_error "Command 'tar' not installed"
     CMD_unix2dos="`which unix2dos`"     ; builder_check_error "Command 'unix2dos' not installed"
     CMD_identify="`which identify`"     ; builder_check_error "Command 'identify' (ImageMagick) not installed"
     CMD_zsyncmake="`which zsyncmake`"   ; builder_check_error "Command 'zsyncmake' not installed"
diff --git a/lib/builder-utils.sh b/lib/builder-utils.sh
index 6ac35ea..a0dc093 100644
--- a/lib/builder-utils.sh
+++ b/lib/builder-utils.sh
@@ -64,6 +64,10 @@ function  process_file() {
 	$CMD_unrar x $src $dst
     elif [ "$format" = "lha" ]; then
 	$CMD_lha x -w=$dst $src
+    elif [ "$format" = "targz" ]; then
+	$CMD_tar xzvf $src -C $dst
+    elif [ "$format" = "tarbz2" ]; then
+	$CMD_tar xjvf $src -C $dst
     else
 	fatal_error "Unknown compression format: $format"
     fi