1 files changed, 80 insertions, 0 deletions

diff --git a/meta-oe/classes/gitver.bbclass b/meta-oe/classes/gitver.bbclass
new file mode 100644
index 000000000..ee8323d6f
--- /dev/null
+++ b/meta-oe/classes/gitver.bbclass
@@ -0,0 +1,80 @@
+# 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 ${S} git checkout, assuming it is one.
+# This is most useful in concert with srctree.bbclass.
+
+def git_drop_tag_prefix(version):
+    import re
+    if re.match("v\d", version):
+        return version[1:]
+    else:
+        return version
+
+GIT_TAGADJUST = "git_drop_tag_prefix(version)"
+GITVER = "${@get_git_pv('${S}', d, tagadjust=lambda version:${GIT_TAGADJUST})}"
+GITSHA = "${@get_git_hash('${S}', d)}"
+
+def get_git_hash(path, d):
+    return oe_run(d, ["git", "rev-parse", "--short", "HEAD"], cwd=path).rstrip()
+
+def get_git_pv(path, d, tagadjust=None):
+    import os
+    import oe.process
+
+    gitdir = os.path.abspath(os.path.join(d.getVar("S", True), ".git"))
+    def git(cmd):
+        try:
+            return oe_run(d, ["git"] + cmd, cwd=gitdir).rstrip()
+        except oe.process.CmdError, exc:
+            bb.fatal(str(exc))
+
+    try:
+        ver = oe_run(d, ["git", "describe", "--tags"], cwd=gitdir).rstrip()
+    except Exception, exc:
+        bb.fatal(str(exc))
+
+    if not ver:
+        try:
+            ver = get_git_hash(gitdir, d)
+        except Exception, exc:
+            bb.fatal(str(exc))
+
+        if ver:
+            return "0.0+%s" % ver
+        else:
+            return "0.0"
+    else:
+        if tagadjust:
+            ver = tagadjust(ver)
+        return ver
+
+def mark_recipe_dependencies(path, d):
+    from bb.parse import mark_dependency
+
+    gitdir = os.path.join(path, ".git")
+
+    # Force the recipe to be reparsed so the version gets bumped
+    # if the active branch is switched, or if the branch changes.
+    mark_dependency(d, os.path.join(gitdir, "HEAD"))
+
+    # Force a reparse if anything in the index changes.
+    mark_dependency(d, os.path.join(gitdir, "index"))
+
+    try:
+        ref = oe_run(d, ["git", "symbolic-ref", "-q", "HEAD"], cwd=gitdir).rstrip()
+    except oe.process.CmdError:
+        pass
+    else:
+        if ref:
+            mark_dependency(d, os.path.join(gitdir, ref))
+
+    # Catch new tags.
+    tagdir = os.path.join(gitdir, "refs", "tags")
+    if os.path.exists(tagdir):
+        mark_dependency(d, tagdir)
+
+python () {
+    mark_recipe_dependencies(d.getVar("S", True), d)
+}