+# We filter out -Werror from SRC_CC_OPTS, because when configure tests
+# for a feature it may not generate warning-free C code, and thus may
+# think that the feature doesn't exist if -Werror is on.
+$1_$2_CONFIGURE_OPTS += --configure-option=CFLAGS="$$(filter-out -Werror,$$(SRC_CC_OPTS)) $$($1_CC_OPTS) $$($1_$2_CC_OPTS)"
+$1_$2_CONFIGURE_OPTS += --configure-option=LDFLAGS="$$(SRC_LD_OPTS) $$($1_LD_OPTS) $$($1_$2_LD_OPTS)"
+