allarch: Force TARGET_*FLAGS variable values

TARGET_CPPFLAGS, TARGET_CFLAGS, TARGET_CPPFLAGS and TARGET_LDFLAGS may
differ between MACHINEs. Since they are exported they affect task hashes
even if unused which leads to multiple variants of allarch packages
existing in sstate and bouncing in the sysroot when switching between
MACHINEs.

allarch packages shouldn't be using these variables anyway, so let's
ensure they have a fixed value in order to avoid this problem.

(Compare with 05a70ac30b37cab0952f1b9df501993a9dec70da and
14f4d016fef9d660da1e7e91aec4a0e807de59ab.)

Signed-off-by: Mike Crowe <mac@mcrowe.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

diff --git a/meta/classes/allarch.bbclass b/meta/classes/allarch.bbclass
index 4bc99272c4972bd0f00684a8c5d439665e0c504c..6f63f9df282f232cc84c97d90f1d2ad16313c69b 100644 (file)
--- a/meta/classes/allarch.bbclass
+++ b/meta/classes/allarch.bbclass
@@ -27,6 +27,10 @@ python () {
         d.setVar("PACKAGE_EXTRA_ARCHS", "")
         d.setVar("SDK_ARCH", "none")
         d.setVar("SDK_CC_ARCH", "none")
+        d.setVar("TARGET_CPPFLAGS", "none")
+        d.setVar("TARGET_CFLAGS", "none")
+        d.setVar("TARGET_CXXFLAGS", "none")
+        d.setVar("TARGET_LDFLAGS", "none")
 
         # Avoid this being unnecessarily different due to nuances of
         # the target machine that aren't important for "all" arch