dnl -*- Autoconf -*- fragment for the C++ daemon.

AC_MSG_CHECKING([whether to build daemon])
AC_MSG_RESULT([$guix_build_daemon])

dnl C++ environment.  This macro must be used unconditionnaly.
AC_PROG_CXX
AM_PROG_AR
AC_LANG([C++])

if test "x$guix_build_daemon" = "xyes"; then

  GUIX_ASSERT_CXX11

  AC_PROG_RANLIB
  AC_CONFIG_HEADER([nix/config.h])

  dnl Use 64-bit file system calls so that we can support files > 2 GiB.
  AC_SYS_LARGEFILE

  dnl Look for zlib, a required dependency.
  AC_CHECK_LIB([z], [gzdopen], [true],
    [AC_MSG_ERROR([Guix requires zlib.  See http://www.zlib.net/.])])
  AC_CHECK_HEADERS([zlib.h], [true],
    [AC_MSG_ERROR([Guix requires zlib.  See http://www.zlib.net/.])])

  dnl Look for libbz2, an optional dependency.
  AC_CHECK_LIB([bz2], [BZ2_bzWriteOpen], [HAVE_LIBBZ2=yes], [HAVE_LIBBZ2=no])
  if test "x$HAVE_LIBBZ2" = xyes; then
    AC_CHECK_HEADERS([bzlib.h])
    HAVE_LIBBZ2="$ac_cv_header_bzlib_h"
  fi

  dnl Look for SQLite, a required dependency.
  PKG_CHECK_MODULES([SQLITE3], [sqlite3 >= 3.6.19])

  AC_DEFINE([NIX_VERSION], ["0.0.0"], [Fake Nix version number.])
  AC_DEFINE_UNQUOTED([SYSTEM], ["$guix_system"],
    [Guix host system type--i.e., platform and OS kernel tuple.])

  case "$LIBGCRYPT_PREFIX" in
    no)
      LIBGCRYPT_CFLAGS=""
      ;;
    *)
      LIBGCRYPT_CFLAGS="-I$LIBGCRYPT_PREFIX/include"
      ;;
  esac

  case "$LIBGCRYPT_LIBDIR" in
    no)
      LIBGCRYPT_LIBS="-lgcrypt"
      ;;
    *)
      LIBGCRYPT_LIBS="-L$LIBGCRYPT_LIBDIR -lgcrypt"
      ;;
  esac

  AC_SUBST([LIBGCRYPT_CFLAGS])
  AC_SUBST([LIBGCRYPT_LIBS])

  save_CFLAGS="$CFLAGS"
  save_LDFLAGS="$LDFLAGS"
  CFLAGS="$CFLAGS $LIBGCRYPT_CFLAGS"
  LDFLAGS="$LDFLAGS $LIBGCRYPT_LDFLAGS"

  have_gcrypt=yes
  AC_CHECK_LIB([gcrypt], [gcry_md_open], [:], [have_gcrypt=no])
  AC_CHECK_HEADER([gcrypt.h], [:], [have_gcrypt=no])
  if test "x$have_gcrypt" != "xyes"; then
    AC_MSG_ERROR([GNU libgcrypt not found; please install it.])
<pre>
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014 John Darrington &lt;jmd@gnu.org&gt;
;;; Copyright © 2014, 2015, 2018 Mark H Weaver &lt;mhw@netris.org&gt;
;;; Copyright © 2015 Andreas Enge &lt;andreas@enge.fr&gt;
;;; Copyright © 2016 Eric Bavier &lt;bavier@member.fsf.org&gt;
;;; Copyright © 2015, 2019, 2020, 2021 Ludovic Courtès &lt;ludo@gnu.org&gt;
;;; Copyright © 2017 Thomas Danckaert &lt;post@thomasdanckaert.be&gt;
;;; Copyright © 2018 Tobias Geerinckx-Rice &lt;me@tobias.gr&gt;
;;; Copyright © 2018 Arun Isaac &lt;arunisaac@systemreboot.net&gt;
;;; Copyright © 2018, 2019, 2021 Ricardo Wurmus &lt;rekado@elephly.net&gt;
;;; Copyright © 2018, 2020, 2023 Maxim Cournoyer &lt;maxim.cournoyer@gmail.com&gt;
;;; Copyright © 2018, 2020 Efraim Flashner &lt;efraim@flashner.co.il&gt;
;;; Copyright © 2019 Mathieu Othacehe &lt;m.othacehe@gmail.com&gt;
;;; Copyright © 2019, 2020 Giacomo Leidi &lt;goodoldpaul@autistici.org&gt;
;;; Copyright © 2020, 2022 Marius Bakke &lt;marius@gnu.org&gt;
;;; Copyright © 2020 Jonathan Brielmaier &lt;jonathan.brielmaier@web.de&gt;
;;; Copyright © 2020 Jan (janneke) Nieuwenhuizen &lt;janneke@gnu.org&gt;
;;; Copyright © 2021, 2022 Greg Hogan &lt;code@greghogan.com&gt;
;;; Copyright © 2021 Franck Pérignon &lt;franck.perignon@univ-grenoble-alpes.fr&gt;
;;; Copyright © 2021 Aleksandr Vityazev &lt;avityazev@posteo.org&gt;
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see &lt;http://www.gnu.org/licenses/&gt;.

(define-module (gnu packages boost)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix utils)
  #:use-module (guix gexp)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system trivial)
  #:use-module (gnu packages)
  #:use-module (gnu packages autotools)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages icu4c)
  #:use-module (gnu packages llvm)
  #:use-module (gnu packages perl)
  #:use-module (gnu packages python)
  #:use-module (gnu packages shells)
  #:use-module (gnu packages mpi))

(define (version-with-underscores version)
  (string-map (lambda (x) (if (eq? x #\.) #\_ x)) version))

(define (boost-patch name version hash)
  (origin
    (method url-fetch)
    (uri (string-append &quot;https://www.boost.org/patches/&quot;
                        (version-with-underscores version) &quot;/&quot; name))
    (file-name (string-append &quot;boost-&quot; name))
    (sha256 (base32 hash))))

(define-public boost
  (package
    (name &quot;boost&quot;)
    (version &quot;1.83.0&quot;)
    (source (origin
              (method url-fetch)
              (uri (string-append &quot;https://boostorg.jfrog.io/artifactory/main/release/&quot;
                                  version &quot;/source/boost_&quot;