bitbake: build/siggen: Add support for stamp 'clean' masks

Currently when we execute a task, we don't remove other potentially stale
stamps. This can mean if you switch between two different versions of a
recipe without a clean, the build can get very confused.

This patch adds in functionality to allow a wildcard expression of stamp
files to be removed when creating a new stamp file. This patch adds in
the core of the code to enable this but it also requires metadata support
to enable it.

When writing this improvement I went through several different options but
this was the only way I could find to allow things like noexec tasks to
function correctly (where stamps need to be created without the data store).

[YOCTO #2961]

(Bitbake rev: e026469b307522e5b6a680e0ae5587749d33dcae)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/bitbake/lib/bb/cache.py b/bitbake/lib/bb/cache.py
index dea2a80616..619b9eec24 100644
--- a/bitbake/lib/bb/cache.py
+++ b/bitbake/lib/bb/cache.py
@@ -43,7 +43,7 @@ except ImportError:
     logger.info("Importing cPickle failed. "
                 "Falling back to a very slow implementation.")
 
-__cache_version__ = "144"
+__cache_version__ = "145"
 
 def getCacheFile(path, filename, data_hash):
     return os.path.join(path, filename + "." + data_hash)
@@ -130,7 +130,9 @@ class CoreRecipeInfo(RecipeInfoCommon):
         self.broken = self.getvar('BROKEN', metadata)
         self.not_world = self.getvar('EXCLUDE_FROM_WORLD', metadata)
         self.stamp = self.getvar('STAMP', metadata)
+        self.stampclean = self.getvar('STAMPCLEAN', metadata)        
         self.stamp_base = self.flaglist('stamp-base', self.tasks, metadata)
+        self.stamp_base_clean = self.flaglist('stamp-base-clean', self.tasks, metadata)
         self.stamp_extrainfo = self.flaglist('stamp-extra-info', self.tasks, metadata)
         self.file_checksums = self.flaglist('file-checksums', self.tasks, metadata, True)
         self.packages_dynamic = self.listvar('PACKAGES_DYNAMIC', metadata)
@@ -157,7 +159,9 @@ class CoreRecipeInfo(RecipeInfoCommon):
         cachedata.pkg_dp = {}
 
         cachedata.stamp = {}
+        cachedata.stampclean = {}
         cachedata.stamp_base = {}
+        cachedata.stamp_base_clean = {}
         cachedata.stamp_extrainfo = {}
         cachedata.file_checksums = {}
         cachedata.fn_provides = {}
@@ -189,7 +193,9 @@ class CoreRecipeInfo(RecipeInfoCommon):
         cachedata.pkg_pepvpr[fn] = (self.pe, self.pv, self.pr)
         cachedata.pkg_dp[fn] = self.defaultpref
         cachedata.stamp[fn] = self.stamp
+        cachedata.stampclean[fn] = self.stampclean
         cachedata.stamp_base[fn] = self.stamp_base
+        cachedata.stamp_base_clean[fn] = self.stamp_base_clean
         cachedata.stamp_extrainfo[fn] = self.stamp_extrainfo
         cachedata.file_checksums[fn] = self.file_checksums