UBUNTU: [Packaging] final-checks -- check for empty retpoline files

BugLink: http://bugs.launchpad.net/bugs/1751021Signed-off-by: Andy Whitcroft <apw@canonical.com>
Acked-by: Seth Forshee <seth.forshee@canonical.com>
Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>

debian/scripts/misc/final-checks

@@ -41,6 +41,11 @@ abi_check()
 	then
 		failure "$arch/$flavour ABI retpoline file missing"
 	fi
+
+	if [ -f "$abidir/$flavour.retpoline" -a \
+	     ! -s "$abidir/$flavour.retpoline" ]; then
+		failure "$arch/$flavour ABI retpoline file empty -- must regenerate or ignore"
+	fi
 }
 
 for arch in $archs