[PATCH 4/4] yocto-compat-layer.py: Fix the signature validation

[Mark Hatle <mark.hatle@windriver.com>]

The initial signatures need to be collected -after- the dependency layers have
been added to the system.  Otherwise changes that happen due to dependencies,
outside of the layer being scanned, will show up as signature problems.

The add_layer function was split into two pieces so that we can process
the dependencies first, and then add the layer itself for the comparison.

Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
---
 scripts/lib/compatlayer/__init__.py |  7 ++++---
 scripts/yocto-compat-layer.py       | 29 +++++++++++++++++++----------
 2 files changed, 23 insertions(+), 13 deletions(-)

diff --git a/scripts/lib/compatlayer/__init__.py b/scripts/lib/compatlayer/__init__.py
index 24edc88..06c84f4 100644
--- a/scripts/lib/compatlayer/__init__.py
+++ b/scripts/lib/compatlayer/__init__.py
@@ -139,9 +139,7 @@ def _find_layer_depends(depend, layers):
                 return layer
     return None
 
-def add_layer(bblayersconf, layer, layers, logger):
-    logger.info('Adding layer %s' % layer['name'])
-
+def add_layer_dependencies(bblayersconf, layer, layers, logger):
     def recurse_dependencies(depends, layer, layers, logger, ret = []):
         logger.debug('Processing dependencies %s for layer %s.' % \
                     (depends, layer['name']))
@@ -191,7 +189,10 @@ def add_layer(bblayersconf, layer, layers, logger):
             logger.info('Adding layer dependency %s' % layer_depend['name'])
             with open(bblayersconf, 'a+') as f:
                 f.write("\nBBLAYERS += \"%s\"\n" % layer_depend['path'])
+    return True
 
+def add_layer(bblayersconf, layer, layers, logger):
+    logger.info('Adding layer %s' % layer['name'])
     with open(bblayersconf, 'a+') as f:
         f.write("\nBBLAYERS += \"%s\"\n" % layer['path'])
 
diff --git a/scripts/yocto-compat-layer.py b/scripts/yocto-compat-layer.py
index f8a1ac7..22c0c2d 100755
--- a/scripts/yocto-compat-layer.py
+++ b/scripts/yocto-compat-layer.py
@@ -22,7 +22,7 @@ import scriptpath
 scriptpath.add_oe_lib_path()
 scriptpath.add_bitbake_lib_path()
 
-from compatlayer import LayerType, detect_layers, add_layer, get_signatures
+from compatlayer import LayerType, detect_layers, add_layer, add_layer_dependencies, get_signatures
 from oeqa.utils.commands import get_bb_vars
 
 PROGNAME = 'yocto-compat-layer'
@@ -116,29 +116,38 @@ def main():
     results = collections.OrderedDict()
     results_status = collections.OrderedDict()
 
-    logger.info('')
-    logger.info('Getting initial bitbake variables ...')
-    td['bbvars'] = get_bb_vars()
-    logger.info('Getting initial signatures ...')
-    td['builddir'] = builddir
-    td['sigs'] = get_signatures(td['builddir'])
-    logger.info('')
-
     layers_tested = 0
     for layer in layers:
         if layer['type'] == LayerType.ERROR_NO_LAYER_CONF or \
                 layer['type'] == LayerType.ERROR_BSP_DISTRO:
             continue
 
+        logger.info('')
+        logger.info("Setting up for %s(%s), %s" % (layer['name'], layer['type'],
+            layer['path']))
+
         shutil.copyfile(bblayersconf + '.backup', bblayersconf)
 
-        if not add_layer(bblayersconf, layer, dep_layers, logger):
+        if not add_layer_dependencies(bblayersconf, layer, dep_layers, logger):
             logger.info('Skipping %s due to missing dependencies.' % layer['name'])
             results[layer['name']] = None
             results_status[layer['name']] = 'SKIPPED (Missing dependencies)'
             layers_tested = layers_tested + 1
             continue
 
+        logger.info('Getting initial bitbake variables ...')
+        td['bbvars'] = get_bb_vars()
+        logger.info('Getting initial signatures ...')
+        td['builddir'] = builddir
+        td['sigs'] = get_signatures(td['builddir'])
+
+        if not add_layer(bblayersconf, layer, dep_layers, logger):
+            logger.info('Skipping %s ???.' % layer['name'])
+            results[layer['name']] = None
+            results_status[layer['name']] = 'SKIPPED (Unknown)'
+            layers_tested = layers_tested + 1
+            continue
+
         result = test_layer_compatibility(td, layer)
         results[layer['name']] = result
         results_status[layer['name']] = 'PASS' if results[layer['name']].wasSuccessful() else 'FAIL'
-- 
1.8.3.1