1# gc-sm3.m4 serial 2
2dnl Copyright (C) 2017-2021 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7AC_DEFUN([gl_GC_SM3],
8[
9  AC_REQUIRE([gl_GC])
10  AC_CACHE_CHECK([whether libgcrypt supports SM3],
11    [gl_cv_libcrypt_md_sm3],
12    [AC_COMPILE_IFELSE(
13       [AC_LANG_PROGRAM([[
14          #include <gcrypt.h>
15          int a = GCRY_MD_SM3;
16          ]], [[]])
17       ],
18       [gl_cv_libcrypt_md_sm3=yes],
19       [gl_cv_libcrypt_md_sm3=no])
20    ])
21  if test $gl_cv_libcrypt_md_sm3 = yes; then
22    AC_DEFINE([LIBGCRYPT_HAS_MD_SM3], [1],
23      [Define if libgcrypt supports the MD algorithm SM3.])
24  fi
25])
26