install-qa-checks.d: suppress some gnulib implicit configure declarat…

…ions

These happen in tons of GNU packages because of using gnulib, which
pulls in macros that check for some functionality and spit out an
implicit function declaration error if they aren't supported, which is
*expected*.

Bug: https://bugs.gentoo.org/906027
Signed-off-by: Eli Schwartz <[email protected]>

bin/install-qa-check.d/90config-impl-decl

@@ -49,6 +49,15 @@ add_default_skips() {
 		res_ndestroy
 		statacl
 	)
+
+	QA_CONFIG_IMPL_DECL_SKIP+=(
+		# Available in c23, these gnulib checks are expected to fail
+		alignof
+		static_assert
+		unreachable
+		# also gnulib, but checks both linux/non-linux headers
+		MIN
+	)
 }
 
 find_log_targets() {