EXTRA_OECONF_append = " ${PACKAGECONFIG_CONFARGS}"
+def waflock_hash(d):
+ # Calculates the hash used for the waf lock file. This should include
+ # all of the user controllable inputs passed to waf configure. Note
+ # that the full paths for ${B} and ${S} are used; this is OK and desired
+ # because a change to either of these should create a unique lock file
+ # to prevent collisions.
+ import hashlib
+ h = hashlib.sha512()
+ def update(name):
+ val = d.getVar(name)
+ if val is not None:
+ h.update(val.encode('utf-8'))
+ update('S')
+ update('B')
+ update('prefix')
+ update('EXTRA_OECONF')
+ return h.hexdigest()
+
+# Use WAFLOCK to specify a separate lock file. The build is already
+# sufficiently isolated by setting the output directory, this ensures that
+# bitbake won't step on toes of any other configured context in the source
+# directory (e.g. if the source is coming from externalsrc and was previously
+# configured elsewhere).
+export WAFLOCK = ".lock-waf_oe_${@waflock_hash(d)}_build"
+BB_HASHBASE_WHITELIST += "WAFLOCK"
+
python waf_preconfigure() {
import subprocess
from distutils.version import StrictVersion
