cmake-time detection for EVP_aes_128_ctr()

because old openssl versions (e.g. on labrador) don't have it

cmake/ssl.cmake

@@ -55,6 +55,7 @@ MACRO (MYSQL_USE_BUNDLED_SSL)
   SET(SSL_INCLUDE_DIRS ${INC_DIRS})
   SET(SSL_INTERNAL_INCLUDE_DIRS ${CMAKE_SOURCE_DIR}/extra/yassl/taocrypt/mySTL)
   SET(SSL_DEFINES "-DHAVE_YASSL -DYASSL_PREFIX -DHAVE_OPENSSL -DMULTI_THREADED")
+  SET(HAVE_EncryptAes128Ctr OFF CACHE INTERNAL "yassl doesn't have EncryptAes128Ctr")
   CHANGE_SSL_SETTINGS("bundled")
   ADD_SUBDIRECTORY(extra/yassl)
   ADD_SUBDIRECTORY(extra/yassl/taocrypt)
@@ -193,6 +194,10 @@ MACRO (MYSQL_CHECK_SSL)
       SET(SSL_INCLUDE_DIRS ${OPENSSL_INCLUDE_DIR})
       SET(SSL_INTERNAL_INCLUDE_DIRS "")
       SET(SSL_DEFINES "-DHAVE_OPENSSL")
+
+      SET(CMAKE_REQUIRED_LIBRARIES ${SSL_LIBRARIES})
+      CHECK_SYMBOL_EXISTS(EVP_aes_128_ctr "openssl/evp.h"
+                          HAVE_EncryptAes128Ctr)
     ELSE()
       IF(WITH_SSL STREQUAL "system")
         MESSAGE(SEND_ERROR "Cannot find appropriate system libraries for SSL. Use  WITH_SSL=bundled to enable SSL support")

config.h.cmake

@@ -589,6 +589,7 @@
 #cmakedefine HAVE_CHARSET_utf32 1
 #cmakedefine HAVE_UCA_COLLATIONS 1
 #cmakedefine HAVE_COMPRESS 1
+#cmakedefine HAVE_EncryptAes128Ctr 1
 
 
 /*

include/my_crypt.h

@@ -7,8 +7,6 @@
 
 #if !defined(HAVE_YASSL) && defined(HAVE_OPENSSL)
 
-#define HAVE_EncryptAes128Ctr
-
 C_MODE_START
 Crypt_result my_aes_encrypt_ctr(const uchar* source, uint32 source_length,
                                 uchar* dest, uint32* dest_length,

mysys_ssl/my_crypt.cc

@@ -11,7 +11,6 @@
 #include "mysql.h"
 #include <openssl/evp.h>
 #include <openssl/aes.h>
-#include <openssl/rand.h>
 
 static const int CRYPT_ENCRYPT = 1;
 static const int CRYPT_DECRYPT = 0;
@@ -350,6 +349,8 @@ C_MODE_END
 
 #else  /* OpenSSL */
 
+#include <openssl/rand.h>
+
 C_MODE_START
 
 Crypt_result my_random_bytes(uchar* buf, int num)