sbin/make.cross: fix cflags test for older GCCs

GCC 9 has "unrecognized command line option" message instead of "unrecognized command-line option" (note the space instead of the hyphen), which makes it pass all the cflags tests and append unsupported flags to KCFLAGS. Use '.' pattern when grepping the output to match both ' ' and '-'. Fixes: 5ee4b22 ("sbin/make.cross: append extra kcflags when feasible") Signed-off-by: Alexander Lobakin <[email protected]> Signed-off-by: Philip Li <[email protected]>
intel · Nov 8, 2023 · 0cb1dc1 · 0cb1dc1
1 parent fc48edb
commit 0cb1dc1
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/sbin/make.cross b/sbin/make.cross
@@ -518,7 +518,7 @@ is_supported_compiler_option()
 	# $ clang-15 -Winvalid-option -xc /dev/null
 	# warning: unknown warning option '-Winvalid-option' [-Wunknown-warning-option]
 
-	$compiler $option -xc /dev/null 2>&1 | grep -q -e "unrecognized command-line option" -e "unknown warning option" && return 1
+	$compiler $option -xc /dev/null 2>&1 | grep -q -e "unrecognized command.line option" -e "unknown warning option" && return 1
 
 	return 0
 }