bitbake: lib/bb: Add BB_SIGNATURE_LOCAL_DIRS_EXCLUDE to speed-up taskhash on directories

The new BB_SIGNATURE_LOCAL_DIRS_EXCLUDE allows you to specify a list
of directories to exclude when making taskhash, our specific case
is using SRC_URI that points local VCS directory.

Use bb.fetch.module to set default to: "CVS .bzr .git .hg .osc .p4 .repo .svn"

(Bitbake rev: 4c7d689341f471efdf8ab7c2a7c6a19d2d370f5c)

Signed-off-by: Aníbal Limón <anibal.limon@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 923aff060d8aba8456979c35b16d300ba7c13ff9)
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/bitbake/lib/bb/siggen.py b/bitbake/lib/bb/siggen.py
index e484e5e37d..f982bf22bc 100644
--- a/bitbake/lib/bb/siggen.py
+++ b/bitbake/lib/bb/siggen.py
@@ -126,6 +126,7 @@ class SignatureGeneratorBasic(SignatureGenerator):
 
         self.unihash_cache = bb.cache.SimpleCache("1")
         self.unitaskhashes = self.unihash_cache.init_cache(data, "bb_unihashes.dat", {})
+        self.localdirsexclude = (data.getVar("BB_SIGNATURE_LOCAL_DIRS_EXCLUDE") or "CVS .bzr .git .hg .osc .p4 .repo .svn").split()
 
     def init_rundepcheck(self, data):
         self.taskwhitelist = data.getVar("BB_HASHTASK_WHITELIST") or None
@@ -222,9 +223,9 @@ class SignatureGeneratorBasic(SignatureGenerator):
 
         if task in dataCache.file_checksums[fn]:
             if self.checksum_cache:
-                checksums = self.checksum_cache.get_checksums(dataCache.file_checksums[fn][task], recipename)
+                checksums = self.checksum_cache.get_checksums(dataCache.file_checksums[fn][task], recipename, self.localdirsexclude)
             else:
-                checksums = bb.fetch2.get_file_checksums(dataCache.file_checksums[fn][task], recipename)
+                checksums = bb.fetch2.get_file_checksums(dataCache.file_checksums[fn][task], recipename, self.localdirsexclude)
             for (f,cs) in checksums:
                 self.file_checksum_values[tid].append((f,cs))