Hi Looks like hkdf.c does not need assert.h so remove it.
Best, Martin Index: hkdf/hkdf.c =================================================================== RCS file: /cvs/src/lib/libcrypto/hkdf/hkdf.c,v retrieving revision 1.4 diff -u -p -r1.4 hkdf.c --- hkdf/hkdf.c 21 Nov 2019 20:02:20 -0000 1.4 +++ hkdf/hkdf.c 25 Aug 2021 09:52:21 -0000 @@ -16,7 +16,6 @@ #include <openssl/hkdf.h> -#include <assert.h> #include <string.h> #include <openssl/err.h>