Add a build system.

* configure.ac, Makefile.am: New files.

.gitignore

@@ -4,3 +4,11 @@
 *.go
 tmp
 *.log
+/build-aux
+/configure
+Makefile.in
+Makefile
+/autom4te.cache
+config.cache
+/aclocal.m4
+/config.status

Makefile.am

@@ -0,0 +1,62 @@
+# Guix --- Nix package management from Guile.         -*- coding: utf-8 -*-
+# Copyright (C) 2012 Ludovic Courtès <ludo@gnu.org>
+#
+# This file is part of Guix.
+#
+# 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.
+#
+# 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 Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+MODULES =					\
+  guix.scm					\
+  guix/derivations.scm				\
+  guix/gnu-build-system.scm			\
+  guix/http.scm					\
+  guix/store.scm				\
+  guix/utils.scm				\
+  guix/build/gnu-build-system.scm		\
+  guix/build/http.scm				\
+  guix/build/utils.scm
+
+GOBJECTS = $(MODULES:%.scm=%.go)
+
+nobase_dist_guilemodule_DATA = $(MODULES)
+nobase_nodist_guilemodule_DATA = $(GOBJECTS)
+
+TESTS =						\
+  tests/builders.scm				\
+  tests/derivations.scm				\
+  tests/utils.scm
+
+TESTS_ENVIRONMENT =							\
+  NIXPKGS="$(NIXPKGS)"							\
+  GUILE_LOAD_COMPILED_PATH="$(top_builddir):$$GUILE_LOAD_COMPILED_PATH"	\
+  $(GUILE) -L "$(top_srcdir)"
+
+CLEANFILES = $(GOBJECTS) *.log
+
+.scm.go:
+	$(MKDIR_P) `dirname "$@"`
+	GUILE_AUTO_COMPILE=0							\
+	GUILE_LOAD_COMPILED_PATH="$(top_builddir):$$GUILE_LOAD_COMPILED_PATH"	\
+	$(GUILD) compile -Wformat -Wunbound-variable -Warity-mismatch		\
+	  -o "$@" "$<"
+
+SUFFIXES = .go
+
+# Make sure source files are installed first, so that the mtime of
+# installed compiled files is greater than that of installed source
+# files.  See
+# <http://lists.gnu.org/archive/html/guile-devel/2010-07/msg00125.html>
+# for details.
+guix_install_go_files = install-nobase_nodist_guilemoduleDATA
+$(guix_install_go_files): install-nobase_dist_guilemoduleDATA

configure.ac

@@ -0,0 +1,54 @@
+#                                               -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+AC_PREREQ(2.68)
+AC_INIT([guix], [0.0], [guile-user@gnu.org])
+AC_CONFIG_AUX_DIR([build-aux])
+
+AM_INIT_AUTOMAKE([1.11 foreign silent-rules subdir-objects \
+ color-tests parallel-tests])
+
+AC_CONFIG_SRCDIR([guix.scm])
+AC_CONFIG_MACRO_DIR([m4])
+
+guilemoduledir="${datarootdir}/guile/site/2.0"
+AC_SUBST([guilemoduledir])
+
+PKG_CHECK_MODULES([GUILE], [guile-2.0])
+AC_PATH_PROG([GUILE], [guile])
+AC_PATH_PROG([GUILD], [guild])
+
+AC_ARG_WITH([nix-prefix],
+  [AS_HELP_STRING([--with-nix-prefix=DIR], [search for Nix in DIR])],
+  [case "$withval" in
+    yes|no) ;;
+    *)      PATH="$withval/bin:$PATH"; export PATH;;
+   esac],
+  [])
+
+AC_PATH_PROG([NIX_INSTANTIATE], [nix-instantiate])
+AC_PATH_PROG([NIX_HASH], [nix-hash])
+if test "x$NIX_INSTANTIATE$NIX_HASH" = "x"; then
+   AC_MSG_ERROR([Nix programs not found; please install Nix or use `--with-nix-prefix'.])
+fi
+
+AC_ARG_WITH([nixpkgs],
+  [AS_HELP_STRING([--with-nixpkgs=DIR], [search for Nixpkgs in DIR])],
+  [case "$withval" in
+    yes|no) AC_MSG_ERROR([Please use `--with-nixpkgs=DIR'.]);;
+    *)      NIXPKGS="$withval";;
+   esac],
+  [])
+
+if test -f "$NIXPKGS/default.nix"; then
+   AC_MSG_CHECKING([for Nixpkgs source tree])
+   AC_MSG_RESULT([$NIXPKGS])
+   AC_SUBST([NIXPKGS])
+else
+   AC_MSG_WARN([Nixpkgs not found; this will prevent most tests from running.])
+   AC_MSG_WARN([Please use `--with-nixpkgs'.])
+fi
+
+AC_CONFIG_FILES([Makefile])
+
+AC_OUTPUT