SCRIPTS: publish-release: pass -n to gzip to remove timestamp

It just appeared that the tar.gz we put online are not reproducible
because a timestamp is put by default into the archive. Passing "-n"
to gzip is sufficient to remove this timestamp, so let's do it, and
also make the gzip command configurable for more flexibility. Now
issuing the commands multiple times finally results in the same
archives being produced.

This should be backported to supported stable branches.

diff --git a/scripts/publish-release b/scripts/publish-release
index 5a9a5cead049906aa8ac7d87c169a81511c27e5c..4938049a3ed3641c1751038b46bbd05deb71490c 100755 (executable)
--- a/scripts/publish-release
+++ b/scripts/publish-release
@@ -9,6 +9,7 @@
 #   - shows a listing of the final file
 
 USAGE="Usage: ${0##*/} [-a] [-q] [-y] [-b branch] [-n newver] DIR"
+CMD_GZIP="${CMD_GZIP:-gzip -nc9}"
 TARGET_DIR=
 OUTPUT=
 SAYYES=
@@ -161,7 +162,7 @@ fi
 echo "Archiving sources for version $NEW ..."
 rm -f "${TARGET_DIR}/src${DEVEL}/haproxy-${NEW}.tar.gz"{,.md5,.sha256}
 if ! git archive --format=tar --prefix="haproxy-${NEW}/" "v$NEW" | \
-     gzip -9 > "${TARGET_DIR}/src${DEVEL}/haproxy-${NEW}.tar.gz"; then
+     $CMD_GZIP > "${TARGET_DIR}/src${DEVEL}/haproxy-${NEW}.tar.gz"; then
        die "Failed to produce the tar.gz archive"
 fi
 
@@ -174,7 +175,7 @@ git show "v$NEW:CHANGELOG" > "$TARGET_DIR/src/CHANGELOG"
 
 for i in "${DOC[@]}"; do
        git show "v$NEW:$i" > "$TARGET_DIR/doc/${i#doc/}"
-       gzip -c9 < "$TARGET_DIR/doc/${i#doc/}" > "$TARGET_DIR/doc/${i#doc/}.gz"
+       $CMD_GZIP < "$TARGET_DIR/doc/${i#doc/}" > "$TARGET_DIR/doc/${i#doc/}.gz"
 done
 
 echo "Done : ls -l ${TARGET_DIR}"