--- /dev/null
+# Copyright (C) 2009 Chris Larson <clarson@kergoth.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+#
+# gitver.bbclass provides a GITVER variable which is a (fairly) sane version,
+# for use in ${PV}, extracted from the ${S} git checkout, assuming it is one.
+# This is most useful in concert with srctree.bbclass.
+
+
+GITVER = "${@get_git_pv('${S}', d)}"
+
+def gitver_mark_dependency(d):
+ from bb.data import expand
+ from bb.parse import mark_dependency
+ from os.path import abspath
+
+ fn = abspath(expand("${S}/.git/HEAD", d))
+ mark_dependency(d, fn)
+
+def get_git_pv(path, d, tagadjust=None):
+ from subprocess import Popen, PIPE
+ from os.path import join
+ from bb import error
+
+ env = {"GIT_DIR": join(d.getVar("S", True), ".git")}
+
+ def popen(cmd, **kwargs):
+ kwargs["stderr"] = PIPE
+ kwargs["stdout"] = PIPE
+ kwargs["env"] = env
+ try:
+ pipe = Popen(cmd, **kwargs)
+ except OSError, e:
+ #error("Execution of %s failed: %s" % (cmd, e))
+ return
+
+ (stdout, stderr) = pipe.communicate(None)
+ if pipe.returncode != 0:
+ #error("Execution of %s failed: %s" % (cmd, stderr))
+ return
+ return stdout.rstrip()
+
+ gitver_mark_dependency(d)
+
+ ver = popen(["git", "describe", "--tags"], cwd=path)
+ if not ver:
+ ver = popen(["git", "rev-parse", "--short", "HEAD"], cwd=path)
+ if ver:
+ return "0.0-%s" % ver
+ else:
+ return "0.0"
+ else:
+ if tagadjust:
+ ver = tagadjust(ver)
+ return ver