[OE-core] [PATCH 2/4] classes/populate_sdk_ext: support auto.conf

[Paul Eggleton]

If auto.conf exists in the user's configuration we need to also run it
through the same filter and write the result into the ext SDK, or we
risk missing configuration applied on an autobuilder.

Fixes [YOCTO #8904].

Signed-off-by: Paul Eggleton <paul.eggleton at linux.intel.com>
---
 meta/classes/populate_sdk_ext.bbclass | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/meta/classes/populate_sdk_ext.bbclass b/meta/classes/populate_sdk_ext.bbclass
index 984f538..69e13ab 100644
--- a/meta/classes/populate_sdk_ext.bbclass
+++ b/meta/classes/populate_sdk_ext.bbclass
@@ -169,6 +169,19 @@ python copy_buildsystem () {
 
         f.write('require conf/locked-sigs.inc\n')
 
+    if os.path.exists(builddir + '/conf/auto.conf'):
+        with open(builddir + '/conf/auto.conf', 'r') as f:
+            oldlines = f.readlines()
+        (updated, newlines) = bb.utils.edit_metadata(oldlines, varlist, handle_var)
+        with open(baseoutpath + '/conf/auto.conf', 'w') as f:
+            f.write('# WARNING: this configuration has been automatically generated and in\n')
+            f.write('# most cases should not be edited. If you need more flexibility than\n')
+            f.write('# this configuration provides, it is strongly suggested that you set\n')
+            f.write('# up a proper instance of the full build system and use that instead.\n\n')
+            for line in newlines:
+                if line.strip() and not line.startswith('#'):
+                    f.write(line)
+
     sigfile = d.getVar('WORKDIR', True) + '/locked-sigs.inc'
     oe.copy_buildsystem.generate_locked_sigs(sigfile, d)
 
-- 
2.5.0