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dnl GNU Guix --- Functional package management for GNU
dnl Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
dnl
dnl This file is part of GNU Guix.
dnl
dnl GNU 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 GNU 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 GNU 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])
dnl GUIX_SYSTEM_TYPE
dnl
dnl Determine the Guix host system type, and store it in the
dnl `guix_system' variable.
AC_DEFUN([GUIX_SYSTEM_TYPE], [
AC_REQUIRE([AC_CANONICAL_HOST])
AC_PATH_PROG([SED], [sed])
AC_ARG_WITH(system, AC_HELP_STRING([--with-system=SYSTEM],
[Platform identifier (e.g., `i686-linux').]),
[guix_system="$withval"],
[case "$host_cpu" in
i*86)
machine_name="i686";;
amd64)
machine_name="x86_64";;
*)
machine_name="$host_cpu";;
esac
case "$host_os" in
linux-gnu*)
# For backward compatibility, strip the `-gnu' part.
guix_system="$machine_name-linux";;
*)
# Strip the version number from names such as `gnu0.3',
# `darwin10.2.0', etc.
guix_system="$machine_name-`echo $host_os | "$SED" -e's/[0-9.]*$//g'`";;
esac])
AC_MSG_CHECKING([for the Guix system type])
AC_MSG_RESULT([$guix_system])
AC_SUBST([guix_system])
])
dnl GUIX_ASSERT_SUPPORTED_SYSTEM
dnl
dnl Assert that this is a system to which the distro is ported.
AC_DEFUN([GUIX_ASSERT_SUPPORTED_SYSTEM], [
AC_REQUIRE([GUIX_SYSTEM_TYPE])
AC_ARG_WITH([courage], [AC_HELP_STRING([--with-courage],
[Assert that even if this platform is unsupported, you will be
courageous and port the GNU System distribution to it (see
"GNU Distribution" in the manual.)])],
[guix_courageous="$withval"],
[guix_courageous="no"])
# Currently only Linux-based systems are supported, and only on some
# platforms.
case "$guix_system" in
x86_64-linux|i686-linux)
;;
*)
if test "x$guix_courageous" = "xyes"; then
AC_MSG_WARN([building Guix on `$guix_system', which is not supported])
else
AC_MSG_ERROR([`$guix_system' is not a supported platform.
See "GNU Distribution" in the manual, or try `--with-courage'.])
fi
;;
esac
])
dnl GUIX_ASSERT_GUILE_FEATURES FEATURES
dnl
dnl Assert that FEATURES are provided by $GUILE.
AC_DEFUN([GUIX_ASSERT_GUILE_FEATURES], [
for guix_guile_feature in $1
do
AC_MSG_CHECKING([whether $GUILE provides feature '$guix_guile_feature'])
if "$GUILE" -c "(exit (provided? '$guix_guile_feature))"
then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
AC_MSG_ERROR([$GUILE does not support feature '$guix_guile_feature', which is required.])
fi
done
])
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