b86e9a831d4ac22827a76772107d5bc2c215d825
[exim.git] / src / src / sha_ver.h
1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
4
5 /* Copyright (c) Jeremy Harris 2018 */
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 # include <openssl/ssl.h>
38 # if (OPENSSL_VERSION_NUMBER >= 0x10101000L) && !defined(LIBRESSL_VERSION_NUMBER)
39 # define EXIM_HAVE_SHA3
40 # endif
41 # endif
42
43 #else
44 # define SHA_NATIVE
45 #endif
46