--- crypto/sleep.orig
+++ crypto/sleep.c
@@ -10,6 +10,8 @@
 #include <openssl/crypto.h>
 #include "internal/e_os.h"

+#define OPENSSL_USE_USLEEP
+
 /* system-specific variants defining OSSL_sleep() */
 #if defined(OPENSSL_SYS_UNIX) || defined(__DJGPP__)

--- providers/implementations/rands/seeding/rand_unix.c.orig
+++ providers/implementations/rands/seeding/rand_unix.c
@@ -84,8 +84,6 @@
 #     define OSSL_POSIX_TIMER_OKAY
 #    endif
 #   endif
-#  else
-#   define OSSL_POSIX_TIMER_OKAY
 #  endif
 # endif
 #endif /* (defined(OPENSSL_SYS_UNIX) && !defined(OPENSSL_SYS_VXWORKS))