devtool: run kernel dependencies

The kernel package needs "kern-tools-native" in order for it's
do_kernel_metadata. Thus, devtool extract for kernel in a pristine
environment fails. With the current bb.tinfoil implementation it is not
possible to run arbitrary bitbake commands - e.g. run
"bitbake kern-tools-native -c populate_sysroot" in our case. This patch
implements an ugly workaround for that problem, basically by hardcoding
this dependency and running the required bitbake task(s) before tinfoil
is initialized.

[YOCTO #6658]

Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com>

1 files changed, 23 insertions, 3 deletions

diff --git a/scripts/lib/devtool/standard.py b/scripts/lib/devtool/standard.py
index f2621cdb91..e59fb5e567 100644
--- a/scripts/lib/devtool/standard.py
+++ b/scripts/lib/devtool/standard.py
@@ -170,7 +170,7 @@ def extract(args, config, basepath, workspace):
     """Entry point for the devtool 'extract' subcommand"""
     import bb
 
-    tinfoil = setup_tinfoil()
+    tinfoil = _prep_extract_operation(config, basepath, args.recipename)
 
     rd = parse_recipe(config, tinfoil, args.recipename, True)
     if not rd:
@@ -210,6 +210,24 @@ class BbTaskExecutor(object):
             self.executed.append(func)
 
 
+def _prep_extract_operation(config, basepath, recipename):
+    """HACK: Ugly workaround for making sure that requirements are met when
+       trying to extract a package. Returns the tinfoil instance to be used."""
+    tinfoil = setup_tinfoil()
+    rd = parse_recipe(config, tinfoil, recipename, True)
+
+    if bb.data.inherits_class('kernel-yocto', rd):
+        tinfoil.shutdown()
+        try:
+            stdout, _ = exec_build_env_command(config.init_path, basepath,
+                                               'bitbake kern-tools-native')
+            tinfoil = setup_tinfoil()
+        except bb.process.ExecutionError as err:
+            raise DevtoolError("Failed to build kern-tools-native:\n%s" %
+                               err.stdout)
+    return tinfoil
+
+
 def _extract_source(srctree, keep_temp, devbranch, d):
     """Extract sources of a recipe"""
     import bb.event
@@ -395,8 +413,10 @@ def modify(args, config, basepath, workspace):
         raise DevtoolError("directory %s does not exist or not a directory "
                            "(specify -x to extract source from recipe)" %
                            args.srctree)
-
-    tinfoil = setup_tinfoil()
+    if args.extract:
+        tinfoil = _prep_extract_operation(config, basepath, args.recipename)
+    else:
+        tinfoil = setup_tinfoil()
 
     rd = parse_recipe(config, tinfoil, args.recipename, True)
     if not rd: