src/src/sha_ver.h

   1 /*************************************************
   2 *     Exim - an Internet mail transport agent    *
   3 *************************************************/
   4
   5 /* Copyright (c) Jeremy Harris 2016 */
   6 /* See the file NOTICE for conditions of use and distribution. */
   7
   8 /* SHA routine selection */
   9
  10 #include "exim.h"
  11
  12 /* Please be aware that pulling in extra headers which are not in the system
  13  * includes may require careful juggling of CFLAGS in
  14  * scripts/Configure-Makefile -- that logic should be kept in sync with this.
  15  * In particular, building with just something like USE_OPENSSL_PC=openssl
  16  * and not massaging CFLAGS in Local/Makefile is fully supported.
  17  */
  18
  19 #ifdef SUPPORT_TLS
  20
  21 # define EXIM_HAVE_SHA2
  22
  23 # ifdef USE_GNUTLS
  24 #  include <gnutls/gnutls.h>
  25
  26 #  if GNUTLS_VERSION_NUMBER >= 0x020a00
  27 #   define SHA_GNUTLS
  28 #   if GNUTLS_VERSION_NUMBER >= 0x030500
  29 #    define EXIM_HAVE_SHA3
  30 #   endif
  31 #  else
  32 #   define SHA_GCRYPT
  33 #  endif
  34
  35 # else
  36 #  define SHA_OPENSSL
  37 # endif
  38
  39 #else
  40 # define SHA_NATIVE
  41 #endif
  42