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dnl Guix --- Nix package management from Guile. -*- coding: utf-8 -*-
dnl Copyright (C) 2012 Ludovic Courtès <ludo@gnu.org>
dnl
dnl This file is part of Guix.
dnl
dnl Guix is free software; you can redistribute it and/or modify it
dnl under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 3 of the License, or (at
dnl your option) any later version.
dnl
dnl Guix is distributed in the hope that it will be useful, but
dnl WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with Guix. If not, see <http://www.gnu.org/licenses/>.
dnl GUIX_ASSERT_LIBGCRYPT_USABLE
dnl
dnl Assert that GNU libgcrypt is usable from Guile.
AC_DEFUN([GUIX_ASSERT_LIBGCRYPT_USABLE],
[AC_CACHE_CHECK([whether $LIBGCRYPT can be dynamically loaded],
[guix_cv_libgcrypt_usable_p],
[GUILE_CHECK([retval],
[(dynamic-func \"gcry_md_hash_buffer\" (dynamic-link \"$LIBGCRYPT\"))])
if test "$retval" = 0; then
guix_cv_libgcrypt_usable_p="yes"
else
guix_cv_libgcrypt_usable_p="no"
fi])
if test "x$guix_cv_libgcrypt_usable_p" != "xyes"; then
AC_MSG_ERROR([GNU libgcrypt does not appear to be usable; see `--with-libgcrypt-prefix' and `README'.])
fi])
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