copy_buildsystem.py: Add a way to copy buildsystem to a directory.

This file provides a way to take bitbake and the layers in the
current build and copy them to a target specified.

Signed-off-by: Randy Witt <randy.e.witt@linux.intel.com>
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 70 insertions, 0 deletions

diff --git a/meta/lib/oe/copy_buildsystem.py b/meta/lib/oe/copy_buildsystem.py
new file mode 100644
index 0000000000..5a4d8c332e
--- /dev/null
+++ b/meta/lib/oe/copy_buildsystem.py
@@ -0,0 +1,70 @@
+# This class should provide easy access to the different aspects of the
+# buildsystem such as layers, bitbake location, etc.
+import stat
+import shutil
+
+def _smart_copy(src, dest):
+    # smart_copy will choose the correct function depending on whether the
+    # source is a file or a directory.
+    mode = os.stat(src).st_mode
+    if stat.S_ISDIR(mode):
+        shutil.copytree(src, dest, symlinks=True)
+    else:
+        shutil.copyfile(src, dest)
+        shutil.copymode(src, dest)
+
+class BuildSystem(object):
+    def __init__(self, d):
+        self.d = d
+        self.layerdirs = d.getVar('BBLAYERS', True).split()
+
+    def copy_bitbake_and_layers(self, destdir):
+        # Copy in all metadata layers + bitbake (as repositories)
+        layers_copied = []
+        bb.utils.mkdirhier(destdir)
+        layers = list(self.layerdirs)
+
+        corebase = self.d.getVar('COREBASE', True)
+        layers.append(corebase)
+
+        corebase_files = self.d.getVar('COREBASE_FILES', True).split()
+
+        # bitbake belongs in corebase so make sure it goes there
+        if "bitbake" not in corebase_files:
+            corebase_files.append("bitbake")
+        corebase_files = [corebase + '/' +x for x in corebase_files]
+
+        for layer in layers:
+            layerconf = os.path.join(layer, 'conf', 'layer.conf')
+            if os.path.exists(layerconf):
+                with open(layerconf, 'r') as f:
+                    if f.readline().startswith("# ### workspace layer auto-generated by devtool ###"):
+                        bb.warn("Skipping local workspace layer %s" % layer)
+                        continue
+
+            # If the layer was already under corebase, leave it there
+            # since layers such as meta have issues when moved.
+            layerdestpath = destdir
+            if corebase == os.path.dirname(layer):
+                layerdestpath += '/' + os.path.basename(corebase)
+            layerdestpath += '/' + os.path.basename(layer)
+
+            layer_relative = os.path.relpath(layerdestpath,
+                                             destdir)
+            layers_copied.append(layer_relative)
+
+            # Treat corebase as special since it typically will contain
+            # build directories or other custom items.
+            if corebase == layer:
+                bb.utils.mkdirhier(layerdestpath)
+                for f in corebase_files:
+                    f_basename = os.path.basename(f)
+                    destname = os.path.join(layerdestpath, f_basename)
+                    _smart_copy(f, destname)
+            else:
+                if os.path.exists(layerdestpath):
+                    bb.note("Skipping layer %s, already handled" % layer)
+                else:
+                    _smart_copy(layer, layerdestpath)
+
+        return layers_copied