commit ccc54bd61c768b6a27f9305a0831b76a7b6d706f

Author: Noah Goldstein <goldstein.w.n@gmail.com>

Date:   Wed Jun 29 18:56:18 2022 -0700

    x86: Add missing IS_IN (libc) check to strncmp-sse4_2.S

    Was missing to for the multiarch build rtld-strncmp-sse4_2.os was

    being built and exporting symbols:

    build/glibc/string/rtld-strncmp-sse4_2.os:

    0000000000000000 T __strncmp_sse42

    Introduced in:

    commit 11ffcacb64a939c10cfc713746b8ec88837f5c4a

    Author: H.J. Lu <hjl.tools@gmail.com>

    Date:   Wed Jun 21 12:10:50 2017 -0700

        x86-64: Implement strcmp family IFUNC selectors in C

    (cherry picked from commit 96ac447d915ea5ecef3f9168cc13f4e731349a3b)

diff --git a/sysdeps/x86_64/multiarch/strncmp-sse4_2.S b/sysdeps/x86_64/multiarch/strncmp-sse4_2.S

index 22f51a0dfd2770c9..85dc363bf9d6273d 100644

--- a/sysdeps/x86_64/multiarch/strncmp-sse4_2.S

+++ b/sysdeps/x86_64/multiarch/strncmp-sse4_2.S

@@ -16,6 +16,8 @@

    License along with the GNU C Library; if not, see

    <https://www.gnu.org/licenses/>.  */

-#define STRCMP_SSE42 __strncmp_sse42

-#define USE_AS_STRNCMP

-#include "strcmp-sse42.S"

+#if IS_IN (libc)

+# define STRCMP_SSE42 __strncmp_sse42

+# define USE_AS_STRNCMP

+# include "strcmp-sse42.S"

+#endif