1# gc.m4 serial 13 2dnl Copyright (C) 2005-2021 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], 8[ 9 AC_ARG_WITH([libgcrypt], 10 AS_HELP_STRING([--with-libgcrypt], [use libgcrypt for low-level crypto]), 11 libgcrypt=$withval, libgcrypt=no) 12 if test "$libgcrypt" != no; then 13 # gc-libgcrypt.c will fail on startup if we don't have 14 # version 1.4.4 or later, so test for it early. */ 15 gl_good_gcrypt=no 16 AM_PATH_LIBGCRYPT([1.4.4], [gl_good_gcrypt=yes], 17 [AC_MSG_ERROR([libgcrypt is too old])]) 18 if test "x$gl_good_gcrypt" != xno; then 19 dnl Ignore the value of LIBGCRYPT_LIBS, because it does not include 20 dnl '-lgpg-error'. 21 AC_LIB_HAVE_LINKFLAGS([gcrypt], [gpg-error], [#include <gcrypt.h>]) 22 LIB_CRYPTO="$LIBGCRYPT" 23 else 24 AC_MSG_ERROR([libgcrypt not found]) 25 fi 26 fi 27 AC_SUBST([LIB_CRYPTO]) 28 29 AC_REQUIRE([AC_C_RESTRICT]) 30]) 31