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_HEADERS([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.
  PK</td></tr></table>
<table class='tabs'><tr><td>
<a class='active' href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=58974e7b1971c9795ab6365b8e80e5140ceba9e5'>refs</a><a href='/guix/log/'>log</a><a href='/guix/tree/?id=58974e7b1971c9795ab6365b8e80e5140ceba9e5'>tree</a><a href='/guix/commit/?id=58974e7b1971c9795ab6365b8e80e5140ceba9e5'>commit</a><a href='/guix/diff/?id=58974e7b1971c9795ab6365b8e80e5140ceba9e5'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/'>
<input type='hidden' name='id' value='58974e7b1971c9795ab6365b8e80e5140ceba9e5'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='content'><div id='summary'> dnl Chroot support.
  AC_CHECK_FUNCS([chroot unshare])
  AC_CHECK_HEADERS([sched.h sys/param.h sys/mount.h sys/syscall.h])

  if test "x$ac_cv_func_chroot" != "xyes"; then
    AC_MSG_ERROR(['chroot' function missing, bailing out])
  fi

  dnl lutimes and lchown: used when canonicalizing store items.
  dnl posix_fallocate: used when extracting archives.
  dnl vfork: to speed up spawning of helper programs.
  dnl   `--> now disabled because of unpredictable behavior:
  dnl        see <http://lists.gnu.org/archive/html/guix-devel/2014-05/msg00036.html>
  dnl        and Nix commit f794465c (Nov. 2012).
  dnl sched_setaffinity: to improve RPC locality.
  dnl statvfs: to detect disk-full conditions.
  dnl strsignal: for error reporting.
  dnl statx: fine-grain 'stat' call, new in glibc 2.28.
  AC_CHECK_FUNCS([lutimes lchown posix_fallocate sched_setaffinity \
     statvfs nanosleep strsignal statx])

  dnl Check for <locale>.
  AC_LANG_PUSH(C++)
  AC_CHECK_HEADERS([locale])
  AC_LANG_POP(C++)


  dnl Check whether we have the `personality' syscall, which allows us
  dnl to do i686-linux builds on x86_64-linux machines.
  AC_CHECK_HEADERS([sys/personality.h])

  dnl Determine the appropriate default list of substitute URLs (GnuTLS
  dnl is required so we can default to 'https'.)
  guix_substitute_urls="https://ci.guix.gnu.org https://bordeaux.guix.gnu.org"

  AC_MSG_CHECKING([for default substitute URLs])
  AC_MSG_RESULT([$guix_substitute_urls])

  AC_DEFINE_UNQUOTED([GUIX_SUBSTITUTE_URLS], ["$guix_substitute_urls"],
    [Default list of substitute URLs used by 'guix-daemon'.])

  dnl Check for Guile-SSH, which is required by 'guix offload'.
  GUIX_CHECK_GUILE_SSH

  case "x$guix_cv_have_recent_guile_ssh" in
    xyes)
      guix_build_daemon_offload="yes"
      AC_DEFINE([HAVE_DAEMON_OFFLOAD_HOOK], [1],
	[Define if the daemon's 'offload' build hook is being built (requires Guile-SSH).])
      ;;
    *)
      guix_build_daemon_offload="no"
      ;;
  esac

  dnl Temporary directory used to store the daemon's data.
  GUIX_TEST_ROOT_DIRECTORY
  GUIX_TEST_ROOT="$ac_cv_guix_test_root"
  AC_SUBST([GUIX_TEST_ROOT])

  GUIX_CHECK_LOCALSTATEDIR
fi

AM_CONDITIONAL([HAVE_LIBBZ2], [test "x$HAVE_LIBBZ2" = "xyes"])
AM_CONDITIONAL([BUILD_DAEMON], [test "x$guix_build_daemon" = "xyes"])
AM_CONDITIONAL([BUILD_DAEMON_OFFLOAD],			\
  [test "x$guix_build_daemon" = "xyes"			\
   && test "x$guix_build_daemon_offload" = "xyes"])