archiver: Configurable tarball compression

In order to be more efficient, we use xz as compression method
to create GPL sources archives.

Signed-off-by: Fabien Lahoudere <fabien.lahoudere@collabora.com>
[V1 was https://patchwork.openembedded.org/patch/155985/]
[Rebased]
Signed-off-by: Ian Ray <ian.ray@ge.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/meta/classes/archiver.bbclass b/meta/classes/archiver.bbclass
index dd31dc0cd8b0714fac90ff4c41bdd1f043b600c9..411d459ed020584b973ab687e3f2d61e37892d4e 100644 (file)
--- a/meta/classes/archiver.bbclass
+++ b/meta/classes/archiver.bbclass
@@ -51,6 +51,7 @@ ARCHIVER_MODE[diff-exclude] ?= ".pc autom4te.cache patches"
 ARCHIVER_MODE[dumpdata] ?= "0"
 ARCHIVER_MODE[recipe] ?= "0"
 ARCHIVER_MODE[mirror] ?= "split"
+ARCHIVER_MODE[compression] ?= "gz"
 
 DEPLOY_DIR_SRC ?= "${DEPLOY_DIR}/sources"
 ARCHIVER_TOPDIR ?= "${WORKDIR}/archiver-sources"
@@ -409,15 +410,16 @@ def create_tarball(d, srcdir, suffix, ar_outdir):
     # that we archive the actual directory and not just the link.
     srcdir = os.path.realpath(srcdir)
 
+    compression_method = d.getVarFlag('ARCHIVER_MODE', 'compression')
     bb.utils.mkdirhier(ar_outdir)
     if suffix:
-        filename = '%s-%s.tar.gz' % (d.getVar('PF'), suffix)
+        filename = '%s-%s.tar.%s' % (d.getVar('PF'), suffix, compression_method)
     else:
-        filename = '%s.tar.gz' % d.getVar('PF')
+        filename = '%s.tar.%s' % (d.getVar('PF'), compression_method)
     tarname = os.path.join(ar_outdir, filename)
 
     bb.note('Creating %s' % tarname)
-    tar = tarfile.open(tarname, 'w:gz')
+    tar = tarfile.open(tarname, 'w:%s' % compression_method)
     tar.add(srcdir, arcname=os.path.basename(srcdir), filter=exclude_useless_paths)
     tar.close()