From: Sam James <sam@xxxxxxxxxx> commit 50c697215a8cc22f0e58c88f06f2716c05a26e85 upstream. 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-implicit-function-declaration/65213 [2] https://archives.gentoo.org/gentoo-dev/message/dd9f2d3082b8b6f8dfbccb0639e6e240 [3] hosted at lists.linux.dev. [akpm@xxxxxxxxxxxxxxxxxxxx: remember "linux/"] Link: https://lkml.kernel.org/r/20221116182634.2823136-1-sam@xxxxxxxxxx Signed-off-by: Sam James <sam@xxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- include/linux/license.h | 2 ++ 1 file changed, 2 insertions(+) --- 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
