[PATCH 2/4] lib/recipeutils: add a function to determine recipes with shared include files

[Alexander Kanavin <alex.kanavin@gmail.com>]

From: Alexander Kanavin <alex@linutronix.de>

This functionality is needed for 'lockstep version upgrades' where several
recipes need to be upgraded at the same time to produce a buildable
outcome.

The function itself obtains BBINCLUDED for each recipe and then massages
the data until it takes the form of a list of sets:

[{'cmake','cmake-native'},
 {'qemu','qemu-native','qemu-system-native'},
... ]

There's also a selftest that checks for the above.

Unfortunately this won't detect mutually exclusive recipes like mesa and mesa-gl
as they're chosen with PREFERRED_PROVIDER and can't be enabled in the same build
at the same time. ('devtool upgrade' will also accept just one of them but not the other)

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
---
 meta/lib/oe/recipeutils.py                 | 37 ++++++++++++++++++++++
 meta/lib/oeqa/selftest/cases/distrodata.py | 12 +++++++
 2 files changed, 49 insertions(+)

diff --git a/meta/lib/oe/recipeutils.py b/meta/lib/oe/recipeutils.py
index f9d7dfe253a..7586332fe0c 100644
--- a/meta/lib/oe/recipeutils.py
+++ b/meta/lib/oe/recipeutils.py
@@ -1183,3 +1183,40 @@ def get_recipe_upgrade_status(recipes=None):
         pkgs_list = executor.map(_get_recipe_upgrade_status, data_copy_list)
 
     return pkgs_list
+
+def get_common_include_recipes():
+    with bb.tinfoil.Tinfoil() as tinfoil:
+        tinfoil.prepare(config_only=False)
+
+        recipes = tinfoil.all_recipe_files(variants=False)
+
+        recipeincludes = {}
+        for fn in recipes:
+            data = tinfoil.parse_recipe_file(fn)
+            recipeincludes[fn] = {'bbincluded':data.getVar('BBINCLUDED').split(),'pn':data.getVar('PN')}
+        return _get_common_include_recipes(recipeincludes)
+
+def _get_common_include_recipes(recipeincludes_all):
+        recipeincludes = {}
+        for fn,data in recipeincludes_all.items():
+            bbincluded_filtered = [i for i in data['bbincluded'] if os.path.dirname(i) == os.path.dirname(fn) and i != fn]
+            if bbincluded_filtered:
+                recipeincludes[data['pn']] = bbincluded_filtered
+
+        recipeincludes_inverted = {}
+        for k,v in recipeincludes.items():
+            for i in v:
+                recipeincludes_inverted.setdefault(i,set()).add(k)
+
+        recipeincludes_inverted_filtered = {k:v for k,v in recipeincludes_inverted.items() if len(v) > 1}
+
+        recipes_with_shared_includes = list()
+        for v in recipeincludes_inverted_filtered.values():
+            recipeset = v
+            for v1 in recipeincludes_inverted_filtered.values():
+                if recipeset.intersection(v1):
+                    recipeset.update(v1)
+            if recipeset not in recipes_with_shared_includes:
+                recipes_with_shared_includes.append(recipeset)
+
+        return recipes_with_shared_includes
diff --git a/meta/lib/oeqa/selftest/cases/distrodata.py b/meta/lib/oeqa/selftest/cases/distrodata.py
index b60913dbca4..bc561605220 100644
--- a/meta/lib/oeqa/selftest/cases/distrodata.py
+++ b/meta/lib/oeqa/selftest/cases/distrodata.py
@@ -115,3 +115,15 @@ The list of oe-core recipes with maintainers is empty. This may indicate that th
                 self.fail("""
 Unable to find recipes for the following entries in maintainers.inc:
 """ + "\n".join(['%s' % i for i in missing_recipes]))
+
+    def test_common_include_recipes(self):
+        """
+        Summary:     Test that obtaining recipes that share includes between them returns a sane result
+        Expected:    At least cmake and qemu entries are present in the output
+        Product:     oe-core
+        Author:      Alexander Kanavin <alex.kanavin@gmail.com>
+        """
+        recipes = oe.recipeutils.get_common_include_recipes()
+
+        self.assertIn({'qemu-system-native', 'qemu', 'qemu-native'}, recipes)
+        self.assertIn({'cmake-native', 'cmake'}, recipes)
-- 
2.39.2