config-daemon.ac

   1 dnl -*- Autoconf -*- fragment for the C++ daemon.
   2
   3 AC_MSG_CHECKING([whether to build daemon])
   4 AC_MSG_RESULT([$guix_build_daemon])
   5
   6 dnl C++ environment.  This macro must be used unconditionnaly.
   7 AC_PROG_CXX
   8 AM_PROG_AR
   9 AC_LANG([C++])
  10
  11 if test "x$guix_build_daemon" = "xyes"; then
  12
  13   GUIX_ASSERT_CXX11
  14
  15   AC_PROG_RANLIB
  16   AC_CONFIG_HEADER([nix/config.h])
  17
  18   dnl Use 64-bit file system calls so that we can support files > 2 GiB.
  19   AC_SYS_LARGEFILE
  20
  21   dnl Look for libbz2, a required dependency.
  22   AC_CHECK_LIB([bz2], [BZ2_bzWriteOpen], [true],
  23     [AC_MSG_ERROR([Guix requires libbz2, which is part of bzip2.  See http://www.bzip.org/.])])
  24   AC_CHECK_HEADERS([bzlib.h], [true],
  25     [AC_MSG_ERROR([Guix requires libbz2, which is part of bzip2.  See http://www.bzip.org/.])])
  26
  27   dnl Look for SQLite, a required dependency.
  28   PKG_CHECK_MODULES([SQLITE3], [sqlite3 >= 3.6.19])
  29
  30   AC_DEFINE([NIX_VERSION], ["0.0.0"], [Fake Nix version number.])
  31   AC_DEFINE_UNQUOTED([SYSTEM], ["$guix_system"],
  32     [Guix host system type--i.e., platform and OS kernel tuple.])
  33
  34   case "$LIBGCRYPT_PREFIX" in
  35     no)
  36       LIBGCRYPT_CFLAGS=""
  37       ;;
  38     *)
  39       LIBGCRYPT_CFLAGS="-I$LIBGCRYPT_PREFIX/include"
  40       ;;
  41   esac
  42
  43   case "$LIBGCRYPT_LIBDIR" in
  44     no)
  45       LIBGCRYPT_LIBS="-lgcrypt"
  46       ;;
  47     *)
  48       LIBGCRYPT_LIBS="-L$LIBGCRYPT_LIBDIR -lgcrypt"
  49       ;;
  50   esac
  51
  52   AC_SUBST([LIBGCRYPT_CFLAGS])
  53   AC_SUBST([LIBGCRYPT_LIBS])
  54
  55   save_CFLAGS="$CFLAGS"
  56   save_LDFLAGS="$LDFLAGS"
  57   CFLAGS="$CFLAGS $LIBGCRYPT_CFLAGS"
  58   LDFLAGS="$LDFLAGS $LIBGCRYPT_LDFLAGS"
  59
  60   have_gcrypt=yes
  61   AC_CHECK_LIB([gcrypt], [gcry_md_open], [:], [have_gcrypt=no])
  62   AC_CHECK_HEADER([gcrypt.h], [:], [have_gcrypt=no])
  63   if test "x$have_gcrypt" != "xyes"; then
  64     AC_MSG_ERROR([GNU libgcrypt not found; please install it.])
  65   fi
  66
  67   CFLAGS="$save_CFLAGS"
  68   LDFLAGS="$save_LDFLAGS"
  69
  70   dnl Chroot support.
  71   AC_CHECK_FUNCS([chroot unshare])
  72   AC_CHECK_HEADERS([sched.h sys/param.h sys/mount.h sys/syscall.h])
  73
  74   if test "x$ac_cv_func_chroot" != "xyes"; then
  75     AC_MSG_ERROR(['chroot' function missing, bailing out])
  76   fi
  77
  78   dnl lutimes and lchown: used when canonicalizing store items.
  79   dnl posix_fallocate: used when extracting archives.
  80   dnl vfork: to speed up spawning of helper programs.
  81   dnl   `--> now disabled because of unpredictable behavior:
  82   dnl        see <http://lists.gnu.org/archive/html/guix-devel/2014-05/msg00036.html>
  83   dnl        and Nix commit f794465c (Nov. 2012).
  84   dnl sched_setaffinity: to improve RPC locality.
  85   dnl statvfs: to detect disk-full conditions.
  86   dnl strsignal: for error reporting.
  87   AC_CHECK_FUNCS([lutimes lchown posix_fallocate sched_setaffinity \
  88      statvfs nanosleep strsignal])
  89
  90   dnl Check whether the store optimiser can optimise symlinks.
  91   AC_MSG_CHECKING([whether it is possible to create a link to a symlink])
  92   ln -s bla tmp_link
  93   if ln tmp_link tmp_link2 2> /dev/null; then
  94       AC_MSG_RESULT(yes)
  95       AC_DEFINE(CAN_LINK_SYMLINK, 1, [Whether link() works on symlinks.])
  96   else
  97       AC_MSG_RESULT(no)
  98   fi
  99   rm -f tmp_link tmp_link2
 100
 101   dnl Check for <locale>.
 102   AC_LANG_PUSH(C++)
 103   AC_CHECK_HEADERS([locale])
 104   AC_LANG_POP(C++)
 105
 106
 107   dnl Check whether we have the `personality' syscall, which allows us
 108   dnl to do i686-linux builds on x86_64-linux machines.
 109   AC_CHECK_HEADERS([sys/personality.h])
 110
 111   dnl Check for <linux/fs.h> (for immutable file support).
 112   AC_CHECK_HEADERS([linux/fs.h])
 113
 114   dnl Determine the appropriate default list of substitute URLs.
 115   GUILE_MODULE_AVAILABLE([have_gnutls], [(gnutls)])
 116   if test "x$have_gnutls" = "xyes"; then
 117     guix_substitute_urls="https://mirror.hydra.gnu.org"
 118   else
 119     AC_MSG_WARN([GnuTLS is missing, substitutes will be downloaded in the clear])
 120     guix_substitute_urls="http://mirror.hydra.gnu.org"
 121   fi
 122   AC_MSG_CHECKING([for default substitute URLs])
 123   AC_MSG_RESULT([$guix_substitute_urls])
 124
 125   AC_DEFINE_UNQUOTED([GUIX_SUBSTITUTE_URLS], ["$guix_substitute_urls"],
 126     [Default list of substitute URLs used by 'guix-daemon'.])
 127
 128   dnl Check whether the 'offload' build hook can be built (uses
 129   dnl 'restore-file-set', which requires unbuffered custom binary input
 130   dnl ports from Guile >= 2.0.10.)
 131   GUIX_CHECK_UNBUFFERED_CBIP
 132
 133   dnl Check for Guile-SSH, which is required by 'guix offload'.
 134   GUIX_CHECK_GUILE_SSH
 135
 136   case "x$ac_cv_guix_cbips_support_setvbuf$guix_cv_have_recent_guile_ssh" in
 137     xyesyes)
 138       guix_build_daemon_offload="yes"
 139       AC_DEFINE([HAVE_DAEMON_OFFLOAD_HOOK], [1],
 140         [Define if the daemon's 'offload' build hook is being built (requires Guile-SSH).])
 141       ;;
 142     *)
 143       guix_build_daemon_offload="no"
 144       ;;
 145   esac
 146
 147   dnl Temporary directory used to store the daemon's data.
 148   GUIX_TEST_ROOT_DIRECTORY
 149   GUIX_TEST_ROOT="$ac_cv_guix_test_root"
 150   AC_SUBST([GUIX_TEST_ROOT])
 151
 152   GUIX_CHECK_LOCALSTATEDIR
 153
 154   AC_CONFIG_FILES([nix/scripts/list-runtime-roots],
 155     [chmod +x nix/scripts/list-runtime-roots])
 156   AC_CONFIG_FILES([nix/scripts/download],
 157     [chmod +x nix/scripts/download])
 158   AC_CONFIG_FILES([nix/scripts/substitute],
 159     [chmod +x nix/scripts/substitute])
 160   AC_CONFIG_FILES([nix/scripts/guix-authenticate],
 161     [chmod +x nix/scripts/guix-authenticate])
 162   AC_CONFIG_FILES([nix/scripts/offload],
 163     [chmod +x nix/scripts/offload])
 164 fi
 165
 166 AM_CONDITIONAL([BUILD_DAEMON], [test "x$guix_build_daemon" = "xyes"])
 167 AM_CONDITIONAL([BUILD_DAEMON_OFFLOAD],                  \
 168   [test "x$guix_build_daemon" = "xyes"                  \
 169    && test "x$guix_build_daemon_offload" = "xyes"])