Use SecRandom only on 10.7+

Author: barracuda156

src/sqlite3mc_amalgamation.c

@@ -279979,6 +279979,8 @@ static size_t entropy(void* buf, size_t n)
 #ifndef RNDGETENTCNT
 #define RNDGETENTCNT _IOR('R', 0x00, int)
 #endif
+#elif defined(__APPLE__)
+#include <AvailabilityMacros.h>
 #endif
 
 /* Returns the number of urandom bytes read (either 0 or n) */
@@ -280041,13 +280043,13 @@ static size_t read_urandom(void* buf, size_t n)
   return 0;
 }
 
-#if defined(__APPLE__)
+#if defined(__APPLE__) && MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
 #include <Security/SecRandom.h>
 #endif
 
 static size_t entropy(void* buf, size_t n)
 {
-#if defined(__APPLE__)
+#if defined(__APPLE__) && MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
   if (SecRandomCopyBytes(kSecRandomDefault, n, (uint8_t*) buf) == 0)
     return n;
 #elif defined(__linux__) && defined(SYS_getrandom)