build: remove OSX deprecated warnings for openssl

cmake/Modules/DefineCompilerFlags.cmake

@@ -75,3 +75,10 @@ if (MSVC)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /D _CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES_COUNT=1")
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /D _CRT_NONSTDC_NO_WARNINGS=1 /D _CRT_SECURE_NO_WARNINGS=1")
 endif (MSVC)
+
+# This removes this annoying warning
+# "warning: 'BN_CTX_free' is deprecated: first deprecated in OS X 10.7 [-Wdeprecated-declarations]"
+if (OSX)
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-deprecated-declarations")
+endif (OSX)
+

include/libssh/priv.h

@@ -155,16 +155,6 @@ int gettimeofday(struct timeval *__p, void *__t);
 #include <sys/time.h>
 #endif
 
-/*
- * get rid of deprecacy warnings on OSX when using OpenSSL 
- */
-#if defined(__APPLE__)
-    #ifdef MAC_OS_X_VERSION_MIN_REQUIRED
-        #undef MAC_OS_X_VERSION_MIN_REQUIRED
-    #endif
-    #define MAC_OS_X_VERSION_MIN_REQUIRED MAC_OS_X_VERSION_10_6
-#endif
-
 /* forward declarations */
 struct ssh_common_struct;
 struct ssh_kex_struct;