sstate/bitbake.conf: Use pigz if available

Currently the compression of sstate objects is single threaded. In the case
of ltp, this takes around 33s. If we add pigz into the list of non-fatal
HOSTTOOLS and then use if it available when building the sstate object,
this time drops to around 6s.

Since pigz is now widely available this is an optimisation we should
utilise.

(From OE-Core rev: 2de56aa0792ec93445130d801936a8ea643fad27)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 9 insertions, 2 deletions

diff --git a/meta/classes/sstate.bbclass b/meta/classes/sstate.bbclass
index 5a0722567a..350d3107f5 100644
--- a/meta/classes/sstate.bbclass
+++ b/meta/classes/sstate.bbclass
@@ -715,17 +715,24 @@ sstate_task_postfunc[dirs] = "${WORKDIR}"
 #
 sstate_create_package () {
         TFILE=`mktemp ${SSTATE_PKG}.XXXXXXXX`
+
+        # Use pigz if available
+        OPT="-cz"
+        if [ -x "$(command -v pigz)" ]; then
+            OPT="-I pigz -c"
+        fi
+
         # Need to handle empty directories
         if [ "$(ls -A)" ]; then
                 set +e
-                tar -czf $TFILE *
+                tar $OPT -f $TFILE *
                 ret=$?
                 if [ $ret -ne 0 ] && [ $ret -ne 1 ]; then
                         exit 1
                 fi
                 set -e
         else
-                tar -cz --file=$TFILE --files-from=/dev/null
+                tar $OPT --file=$TFILE --files-from=/dev/null
         fi
         chmod 0664 $TFILE
         mv -f $TFILE ${SSTATE_PKG}