sanity.bbclass: Implement initial toolchain sanity checks

This introduces a sanity check for the toolchain, which verifies
each tuning (including any multilibs), producing meaningful diagnostics
for problems, and also provides some higher-level tuning features.

The TUNEVALID and TUNECONFLICT/TUNECONFLICTS settings were not
implemented.  Listed one or two missing features in TUNEVALID,
also (in a previous patch) fixed the references to
features which didn't exist.

This patch also provides a whitelisting mechanism (which is completely
unused) to allow vendors providing prebuilt toolchain components to
restrict tunings to those based on or compatible with a particular ABI.

Signed-off-by: Peter Seebach <peter.seebach@windriver.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/meta/conf/documentation.conf b/meta/conf/documentation.conf
index 3e40a77a4..004a16c6a 100644
--- a/meta/conf/documentation.conf
+++ b/meta/conf/documentation.conf
@@ -36,6 +36,12 @@ for hardware floating point instructions."
 
 TUNEVALID[doc] = "Descriptions of valid tuning features, stored as flags."
 TUNECONFLICTS[doc] = "List of conflicting features for a given feature."
+TUNEABI[doc] = "An underlying ABI used by a particular tuning in a given \
+toolchain layer.  This feature allows providers using prebuilt \
+libraries to check compatibility of a tuning against their selection \
+of libraries."
+TUNEABI_WHITELIST[doc] = "A whitelist of permissible TUNEABI values; if unset, all are allowed."
+TUNEABI_OVERRIDE[doc] = "If set, ignores TUNEABI_WHITELIST."
 
 ASSUME_PROVIDED[doc] = "List of packages (recipes actually) which are assumed to be implicitly available.\
  These packages won't be built by bitbake."