[PATCH 1/2] meta/icecc.bbclass: Move system blacklist to variables

[Joshua Watt <jpewhacker@gmail.com>]

The system blacklists are moved to variables which are ignore when
hashing. This prevents changes to the blacklists from causing all
taskhashes to change (and thus rebuild).

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
---
 meta/classes/icecc.bbclass | 31 ++++++++++++++++++++-----------
 1 file changed, 20 insertions(+), 11 deletions(-)

diff --git a/meta/classes/icecc.bbclass b/meta/classes/icecc.bbclass
index 7597e4c0c93..037cce1e964 100644
--- a/meta/classes/icecc.bbclass
+++ b/meta/classes/icecc.bbclass
@@ -33,7 +33,7 @@ BB_HASHBASE_WHITELIST += "ICECC_PARALLEL_MAKE ICECC_DISABLED ICECC_USER_PACKAGE_
     ICECC_CARET_WORKAROUND ICECC_CFLAGS ICECC_ENV_VERSION \
     ICECC_DEBUG ICECC_LOGFILE ICECC_REPEAT_RATE ICECC_PREFERRED_HOST \
     ICECC_CLANG_REMOTE_CPP ICECC_IGNORE_UNVERIFIED ICECC_TEST_SOCKET \
-    ICECC_ENV_DEBUG \
+    ICECC_ENV_DEBUG ICECC_SYSTEM_PACKAGE_BL ICECC_SYSTEM_CLASS_BL \
     "
 
 ICECC_ENV_EXEC ?= "${STAGING_BINDIR_NATIVE}/icecc-create-env"
@@ -61,6 +61,23 @@ CXXFLAGS += "${ICECC_CFLAGS}"
 # Debug flags when generating environments
 ICECC_ENV_DEBUG ??= ""
 
+# "system" recipe blacklist contains a list of packages that can not distribute
+# compile tasks for one reason or the other. When adding new entry, please
+# document why (how it failed) so that we can re-evaluate it later e.g. when
+# there is new version
+#
+# libgcc-initial - fails with CPP sanity check error if host sysroot contains
+#                  cross gcc built for another target tune/variant
+ICECC_SYSTEM_PACKAGE_BL += "\
+    libgcc-initial \
+    "
+
+# "system" classes that should be blacklisted. When adding new entry, please
+# document why (how it failed) so that we can re-evaluate it later
+#
+ICECC_SYSTEM_CLASS_BL += "\
+    "
+
 def icecc_dep_prepend(d):
     # INHIBIT_DEFAULT_DEPS doesn't apply to the patch command.  Whether or  not
     # we need that built is the responsibility of the patch function / class, not
@@ -134,7 +151,7 @@ def use_icecc(bb,d):
 
     pn = d.getVar('PN')
 
-    system_class_blacklist = []
+    system_class_blacklist = (d.getVar('ICECC_SYSTEM_CLASS_BL') or "").split()
     user_class_blacklist = (d.getVar('ICECC_USER_CLASS_BL') or "none").split()
     package_class_blacklist = system_class_blacklist + user_class_blacklist
 
@@ -143,15 +160,7 @@ def use_icecc(bb,d):
             bb.debug(1, "%s: class %s found in blacklist, disable icecc" % (pn, black))
             return "no"
 
-    # "system" recipe blacklist contains a list of packages that can not distribute compile tasks
-    # for one reason or the other
-    # this is the old list (which doesn't seem to be valid anymore, because I was able to build
-    # all these with icecc enabled)
-    # system_package_blacklist = [ "glibc", "gcc", "bind", "u-boot", "dhcp-forwarder", "enchant", "connman", "orbit2" ]
-    # when adding new entry, please document why (how it failed) so that we can re-evaluate it later
-    # e.g. when there is new version
-    # building libgcc-initial with icecc fails with CPP sanity check error if host sysroot contains cross gcc built for another target tune/variant
-    system_package_blacklist = ["libgcc-initial"]
+    system_package_blacklist = (d.getVar('ICECC_SYSTEM_PACKAGE_BL') or "").split()
     user_package_blacklist = (d.getVar('ICECC_USER_PACKAGE_BL') or "").split()
     user_package_whitelist = (d.getVar('ICECC_USER_PACKAGE_WL') or "").split()
     package_blacklist = system_package_blacklist + user_package_blacklist
-- 
2.19.1