Convert to automake and use a git submodule for gnulib

* configure.ac: Add automake and gnulib macros, replace several
obsolete macros.
* Makefile.am, lib/Makefile.am, src/Makefile.am, tests/Makefile.am:
Add for automake.
* autogen.sh, INSTALL, Makefile.in, mkinstalldirs, update-version.sh:
Obsolete; remove.
* README-hacking: Import from diffutils, replace cvs with git.
* build-aux: Move gnulib auxiliary files here from the top-level
directory.
* gnulib: Add gnulib git submodule.
* bootstrap, bootstrap.conf: Import from gnulib and adjust.
* gl/lib: Remove gnulib files from the repository; they are now
imported into lib/ from gnulib as needed.
* tests/test-lib.sh: Use $abs_top_builddir exported from
tests/Makefile.am here instead of $PWD.
* m4/utimbuf.m4: This macro has been removed from gnulib. Add it here
for now; this will be replaced by gnulib's utimens module soon.

1 files changed, 66 insertions, 0 deletions

diff --git a/README-hacking b/README-hacking
new file mode 100644
index 0000000..8928ab0
--- /dev/null
+++ b/README-hacking
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+-*- outline -*-
+
+These notes intend to help people working on the checked-out sources.
+These requirements do not apply when building from a distribution tarball.
+
+* Requirements
+
+We've opted to keep only the highest-level sources in the GIT repository.
+This eases our maintenance burden, (fewer merges etc.), but imposes more
+requirements on anyone wishing to build from the just-checked-out sources.
+For example, you have to use the latest stable versions of the maintainer
+tools we depend upon, including:
+
+- Automake <http://www.gnu.org/software/automake/>
+- Autoconf <http://www.gnu.org/software/autoconf/>
+- Gettext <http://www.gnu.org/software/gettext/>
+- Gzip <http://www.gnu.org/software/gzip/>
+- M4 <http://www.gnu.org/software/m4/>
+- Tar <http://www.gnu.org/software/tar/>
+- Wget <http://www.gnu.org/software/wget/>
+
+Valgrind <http://valgrind.org/> is also highly recommended, if
+Valgrind supports your architecture.
+
+Only building the initial full source tree will be a bit painful.
+Later, a plain `git pull && make' should be sufficient.
+
+* First checkout
+
+Obviously, if you are reading these notes, you did manage to check out
+this package from CVS.  The next step is to get other files needed to
+build, which are extracted from other source packages:
+
+	$ ./bootstrap
+
+And there you are!  Just
+
+	$ ./configure
+	$ make
+	$ make check
+
+At this point, there should be no difference between your local copy,
+and the master:
+
+	$ git status
+
+should show no difference.
+
+Enjoy!
+
+-----
+
+Copyright (C) 2002-2007, 2009-2010 Free Software Foundation, Inc.
+
+This program 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.
+
+This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.