From 96ac8f13f4d0ee96baf5724d9f96c44c34b8606c Mon Sep 17 00:00:00 2001
From: David Carlier <devnexen@gmail.com>
Date: Tue, 24 Aug 2021 22:40:14 +0100
Subject: [PATCH] Darwin platform allows to build on releases before
 Yosemite/ios 8.

issue #16407 #16408

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/16409)
---
 crypto/rand/rand_unix.c |  5 +----
 include/crypto/rand.h   | 10 ++++++++++
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/crypto/rand/rand_unix.c b/crypto/rand/rand_unix.c
index 43f1069d151d..0f4525106af7 100644
--- a/crypto/rand/rand_unix.c
+++ b/crypto/rand/rand_unix.c
@@ -34,9 +34,6 @@
 #if defined(__OpenBSD__)
 # include <sys/param.h>
 #endif
-#if defined(__APPLE__)
-# include <CommonCrypto/CommonRandom.h>
-#endif
 
 #if defined(OPENSSL_SYS_UNIX) || defined(__DJGPP__)
 # include <sys/types.h>
@@ -381,7 +378,7 @@ static ssize_t syscall_random(void *buf, size_t buflen)
         if (errno != ENOSYS)
             return -1;
     }
-#  elif defined(__APPLE__)
+#  elif defined(OPENSSL_APPLE_CRYPTO_RANDOM)
     if (CCRandomGenerateBytes(buf, buflen) == kCCSuccess)
 	    return (ssize_t)buflen;
 
diff --git a/include/crypto/rand.h b/include/crypto/rand.h
index 5350d3a93119..674f840fd13c 100644
--- a/include/crypto/rand.h
+++ b/include/crypto/rand.h
@@ -20,6 +20,16 @@
 
 # include <openssl/rand.h>
 
+# if defined(__APPLE__) && !defined(OPENSSL_NO_APPLE_CRYPTO_RANDOM)
+#  include <Availability.h>
+#  if (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 101000) || \
+     (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED >= 80000)
+#   define OPENSSL_APPLE_CRYPTO_RANDOM 1
+#   include <CommonCrypto/CommonCryptoError.h>
+#   include <CommonCrypto/CommonRandom.h>
+#  endif
+# endif
+
 /* forward declaration */
 typedef struct rand_pool_st RAND_POOL;