[OE-core] [PATCH 2/2] externalsrc: Set STAMPCLEAN to match STAMP

[Ola x Nilsson]

Only the last stamp file should be kept, but unless STAMPCLEAN matches
files generated using STAMP old stamp files may linger.  This may
cause false positives for skipping tasks.
---
 meta/classes/externalsrc.bbclass | 1 +
 1 file changed, 1 insertion(+)

diff --git a/meta/classes/externalsrc.bbclass b/meta/classes/externalsrc.bbclass
index e115a47..eec5e61 100644
--- a/meta/classes/externalsrc.bbclass
+++ b/meta/classes/externalsrc.bbclass
@@ -116,6 +116,7 @@ python () {
             configstamp = '${TMPDIR}/work-shared/${PN}/${EXTENDPE}${PV}-${PR}/configure.sstate'
             d.setVar('CONFIGURESTAMPFILE', configstamp)
             d.setVar('STAMP', '${STAMPS_DIR}/work-shared/${PN}/${EXTENDPE}${PV}-${PR}')
+            d.setVar('STAMPCLEAN', '${STAMPS_DIR}/work-shared/${PN}/*-*')
 }
 
 python externalsrc_configure_prefunc() {
-- 
2.1.4