From: Sam James sam@gentoo.org
[ Upstream commit 50c697215a8cc22f0e58c88f06f2716c05a26e85 ]
Add missing <linux/string.h> include for strcmp.
Clang 16 makes -Wimplicit-function-declaration an error by default. Unfortunately, out of tree modules may use this in configure scripts, which means failure might cause silent miscompilation or misconfiguration.
For more information, see LWN.net [0] or LLVM's Discourse [1], gentoo-dev@ [2], or the (new) c-std-porting mailing list [3].
[0] https://lwn.net/Articles/913505/ [1] https://discourse.llvm.org/t/configure-script-breakage-with-the-new-werror-i... [2] https://archives.gentoo.org/gentoo-dev/message/dd9f2d3082b8b6f8dfbccb0639e6e... [3] hosted at lists.linux.dev.
[akpm@linux-foundation.org: remember "linux/"] Link: https://lkml.kernel.org/r/20221116182634.2823136-1-sam@gentoo.org Signed-off-by: Sam James sam@gentoo.org Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- include/linux/license.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/include/linux/license.h b/include/linux/license.h index 7cce390f120b..ad937f57f2cb 100644 --- a/include/linux/license.h +++ b/include/linux/license.h @@ -2,6 +2,8 @@ #ifndef __LICENSE_H #define __LICENSE_H
+#include <linux/string.h> + static inline int license_is_gpl_compatible(const char *license) { return (strcmp(license, "GPL") == 0