2 files changed, 40 insertions, 0 deletions

diff --git a/meta/lib/oeqa/selftest/devtool.py b/meta/lib/oeqa/selftest/devtool.py
index f147f248b3..932d6b9ec2 100644
--- a/meta/lib/oeqa/selftest/devtool.py
+++ b/meta/lib/oeqa/selftest/devtool.py
@@ -227,6 +227,39 @@ class DevtoolTests(oeSelfTest):
         matches = glob.glob(stampprefix + '*')
         self.assertFalse(matches, 'Stamp files exist for recipe mdadm that should have been cleaned')
 
+    def test_devtool_modify_git(self):
+        # Check preconditions
+        workspacedir = os.path.join(self.builddir, 'workspace')
+        self.assertTrue(not os.path.exists(workspacedir), 'This test cannot be run with a workspace directory under the build directory')
+        testrecipe = 'mkelfimage'
+        src_uri = get_bb_var('SRC_URI', testrecipe)
+        self.assertIn('git://', src_uri, 'This test expects the %s recipe to be a git recipe' % testrecipe)
+        # Clean up anything in the workdir/sysroot/sstate cache
+        bitbake('%s -c cleansstate' % testrecipe)
+        # Try modifying a recipe
+        tempdir = tempfile.mkdtemp(prefix='devtoolqa')
+        self.track_for_cleanup(tempdir)
+        self.track_for_cleanup(workspacedir)
+        self.add_command_to_tearDown('bitbake-layers remove-layer */workspace')
+        self.add_command_to_tearDown('bitbake -c clean %s' % testrecipe)
+        result = runCmd('devtool modify %s -x %s' % (testrecipe, tempdir))
+        self.assertTrue(os.path.exists(os.path.join(tempdir, 'Makefile')), 'Extracted source could not be found')
+        self.assertTrue(os.path.isdir(os.path.join(tempdir, '.git')), 'git repository for external source tree not found')
+        self.assertTrue(os.path.exists(os.path.join(workspacedir, 'conf', 'layer.conf')), 'Workspace directory not created')
+        matches = glob.glob(os.path.join(workspacedir, 'appends', 'mkelfimage_*.bbappend'))
+        self.assertTrue(matches, 'bbappend not created')
+        # Test devtool status
+        result = runCmd('devtool status')
+        self.assertIn(testrecipe, result.output)
+        self.assertIn(tempdir, result.output)
+        # Check git repo
+        result = runCmd('git status --porcelain', cwd=tempdir)
+        self.assertEqual(result.output.strip(), "", 'Created git repo is not clean')
+        result = runCmd('git symbolic-ref HEAD', cwd=tempdir)
+        self.assertEqual(result.output.strip(), "refs/heads/devtool", 'Wrong branch in git repo')
+        # Try building
+        bitbake(testrecipe)
+
     def test_devtool_update_recipe(self):
         # Check preconditions
         workspacedir = os.path.join(self.builddir, 'workspace')
diff --git a/scripts/lib/devtool/standard.py b/scripts/lib/devtool/standard.py
index bf18aae686..cabf3feaf3 100644
--- a/scripts/lib/devtool/standard.py
+++ b/scripts/lib/devtool/standard.py
@@ -202,6 +202,13 @@ def _extract_source(srctree, keep_temp, devbranch, d):
             # Handle if S is set to a subdirectory of the source
             srcsubdir = os.path.join(workdir, os.path.relpath(srcsubdir, workdir).split(os.sep)[0])
 
+        if os.path.exists(os.path.join(srcsubdir, '.git')):
+            alternatesfile = os.path.join(srcsubdir, '.git', 'objects', 'info', 'alternates')
+            if os.path.exists(alternatesfile):
+                # This will have been cloned with -s, so we need to convert it to a full clone
+                bb.process.run('git repack -a', cwd=srcsubdir)
+                os.remove(alternatesfile)
+
         patchdir = os.path.join(srcsubdir, 'patches')
         haspatches = False
         if os.path.exists(patchdir):