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tags
Makefile
Makefile.in
.deps
.libs
*.lo
*.la
*.so*
aclocal.m4
config.guess
config.h.in
config.sub
configure
install-sh
ltmain.sh
missing
mkinstalldirs
stamp-h.in
stamp-h
config.cache
config.h
config.log
config.status
libtool
*.tar.gz
*.info

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Stow was written by Bob Glickstein <bobg+stow@zanshin.com>, Zanshin
Software, Inc.
Contributions from Gord Matzigkeit <gord@enci.ucalgary.ca>.
John Bazik wrote `fastcwd', the Perl subroutine for computing the
current working directory.

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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
675 Mass Ave, Cambridge, MA 02139, USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Library General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
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To protect your rights, we need to make restrictions that forbid
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These restrictions translate to certain responsibilities for you if you
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you have. You must make sure that they, too, receive or can get the
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rights.
We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
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Also, for each author's protection and ours, we want to make certain
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Finally, any free program is threatened constantly by software
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The precise terms and conditions for copying, distribution and
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GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License. The "Program", below,
refers to any such program or work, and a "work based on the Program"
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either verbatim or with modifications and/or translated into another
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the term "modification".) Each licensee is addressed as "you".
Activities other than copying, distribution and modification are not
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running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.
1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
along with the Program.
You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.
2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
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a) You must cause the modified files to carry prominent notices
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whole or in part contains or is derived from the Program or any
part thereof, to be licensed as a whole at no charge to all third
parties under the terms of this License.
c) If the modified program normally reads commands interactively
when run, you must cause it, when started running for such
interactive use in the most ordinary way, to print or display an
announcement including an appropriate copyright notice and a
notice that there is no warranty (or else, saying that you provide
a warranty) and that users may redistribute the program under
these conditions, and telling the user how to view a copy of this
License. (Exception: if the Program itself is interactive but
does not normally print such an announcement, your work based on
the Program is not required to print an announcement.)
These requirements apply to the modified work as a whole. If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
themselves, then this License, and its terms, do not apply to those
sections when you distribute them as separate works. But when you
distribute the same sections as part of a whole which is a work based
on the Program, the distribution of the whole must be on the terms of
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Thus, it is not the intent of this section to claim rights or contest
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exercise the right to control the distribution of derivative or
collective works based on the Program.
In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
a storage or distribution medium does not bring the other work under
the scope of this License.
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under Section 2) in object code or executable form under the terms of
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except as expressly provided under this License. Any attempt
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may not distribute the Program at all. For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
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implemented by public license practices. Many people have made
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This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.
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certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
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countries not thus excluded. In such case, this License incorporates
the limitation as if written in the body of this License.
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of the General Public License from time to time. Such new versions will
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Foundation.
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NO WARRANTY
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
Appendix: How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) 19yy <name of author>
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) 19yy name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.

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Fri Oct 11 22:09:45 1996 Bob Glickstein <bobg@hiro.zanshin.com>
* stow.html, configure.in: Version 1.3.2.
* README, stow.texi: Correct the URL again.
Fri Oct 11 18:20:42 1996 Bob Glickstein <bobg@hiro.zanshin.com>
* configure.in: Version 1.3.1.
* stow.html: Update Stow manual URL. Mention version 1.3.1.
* README: Update Stow URL.
* Makefile.am: stow-manual.html -> manual.html.
* stow.texi:
Add a reference to the Stow home page on the GNU web server. Change
several occurrences of "which" to "that" for grammatical superiority.
Wed Oct 9 00:34:07 1996 Bob Glickstein <bobg@hiro.zanshin.com>
* Makefile.am:
Add maintainer-only rules for stow-manual.html and stow-manual.texi.
Wed Oct 9 00:32:31 1996 Bob Glickstein <bobg@hiro.zanshin.com>
* README: Refer to the new location for the Stow home page.
* stow.html: Make it right for the GNU web server.
Tue Oct 8 21:54:09 1996 Bob Glickstein <bobg@hiro.zanshin.com>
* stow.texi: Document --restow
* stow.in: Add --restow (-R) option
* configure.in: Add "perl4" to search for Perl binary.
Bump version number to 1.3.
Mon Jun 24 23:23:03 1996 Bob Glickstein <bobg@hiro.zanshin.com>
* stow.texi: Delete trailing whitespace.
Fri Jun 21 19:44:26 1996 Bob Glickstein <bobg@hiro.zanshin.com>
* Makefile.am:
Don't explicitly mention version.texi. Automake now does it
automagically, by noticing the `@include version.texi' in
stow.texi. Awesome.
* stow.texi:
Use @include instead of @input. This is more Texinfoid, plus
allows Automake to automatically deduce the need for
version.texi.
* stow.in:
Elide trailing slashes from package names, then complain if
package names have slashes in them.
Tue Jun 18 23:19:04 1996 Bob Glickstein <bobg@hiro.zanshin.com>
* README: Call it "Gnu Stow".
Tue Jun 18 22:15:45 1996 Bob Glickstein <bobg@hiro.zanshin.com>
* configure.in:
Bump version number to 1.2.
Look for Perl under the names `perl' and `perl5'. If not found,
print a warning.
* stow.texi:
Add a section about bootstrapping. Add text about hacking Gnu
Make output.
* INSTALL:
Describe what happens when Perl isn't found during `configure'.
Mon Jun 17 19:43:25 1996 Bob Glickstein <bobg@hiro.zanshin.com>
* THANKS: Thank Fritz.
Fri Jun 14 19:18:50 1996 Bob Glickstein <bobg@hiro.zanshin.com>
* AUTHORS: Credit John Bazik and Gord Matzigkeit.
* stow.texi: Remove a "known bug" -- the pwd dependency is gone.
* stow.in:
Use fastcwd, from fastcwd.pl (which is GPL'd), to remove
dependency on an external pwd binary. Suggested by Gord
Matzigkeit.
* stow.in: Add a missing comma.
Thu Jun 13 21:52:10 1996 Bob Glickstein <bobg@hiro.zanshin.com>
* stow.in:
Change three occurrences of `my' to `local' for Perl 4
compatibility.
Thu Jun 13 18:07:37 1996 Bob Glickstein <bobg@hiro.zanshin.com>
* configure.in: Bump version number to 1.1.
* Makefile.am:
Add `stow' to the list of clean targets. Don't redirect output
directly into a make target.
* AUTHORS, README:
Use <bobg+stow@zanshin.com> as the contact address.
* TODO: New file.
* stow.in:
Refer to "Gnu Stow" in a few places. Use <bobg+stow@zanshin.com>
as the contact address. Handle long and short options. Handle
`version' and `help' options. Refer to "packages," not
"collections," for consistency with the manual.
* stow.texi:
Refer to "Gnu Stow" in a few places. Use <bobg+stow@zanshin.com>
as the contact address. Add sections on Reporting bugs and Known
bugs. Create a master menu. Minor rewording. Remove the period
from a node name.
* TODO, THANKS: New files.
Mon Jun 10 14:44:13 1996 Bob Glickstein <bobg@hiro.zanshin.com>
* NEWS: Create NEWS file for release. 1.0 now ready.
* stow.texi: Big revisions in preparation for release.
Sun Jun 9 15:47:19 1996 Bob Glickstein <bobg@zoger.ipost.com>
* stow.in: Enhance argument parsing, losing Perl 4 support in the
process.
(later) Perl 4 support restored.
Fri Jun 7 12:13:33 1996 Bob Glickstein <bobg@hiro.zanshin.com>
* Created stow, formerly "depot."

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Basic Installation
==================
Stow is a Perl script. You must have Perl 4 or Perl 5 in order for it
to run.
The steps in building stow are:
1. `cd' to the directory containing the source code (and this file)
and type `./configure' to configure stow for your system. This
step will attempt to locate your copy of perl and use its location
to create `stow' from `stow.in'. If perl can't be found, you'll
have to edit line 1 of `stow' from `#!false' to `#!/path/to/perl'
(where /path/to/perl is wherever perl will be found when stow
runs).
2. Type `make' to create stow.info from stow.texi.
3. Type `make install' to install `stow' and `stow.info'.
4. You can remove the generated files from the source code directory
by typing `make clean'. To also remove the files that `configure'
created (so you can compile the package for a different computer),
type `make distclean'. There is also a `make maintainer-clean'
target, but that is intended mainly for stow's developers. If you
use it, you may have to get all sorts of other programs in order
to regenerate files that came with the distribution.
Installation Names
==================
By default, `make install' will install the package's files in
`/usr/local/bin' and `/usr/local/info'. You can specify an
installation prefix other than `/usr/local' by giving `configure' the
option `--prefix=PATH'.
If the package supports it, you can cause programs to be installed
with an extra prefix or suffix on their names by giving `configure'
the option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
Since `stow' is concerned with separating a package's installation
tree from its run-time tree, you might want to install `stow' into a
directory such as `/usr/local/stow/stow' but have it run out of
`/usr/local'. Do this by giving the run-time prefix (e.g.,
/usr/local) to configure as described above; then run `make'; then run
`make install prefix=/usr/local/stow/stow'. For more information on
this technique, see the Stow manual.
The configuration system
========================
The `configure' shell script attempts to guess correct values for
various system-dependent variables used during compilation. It uses
those values to create a `Makefile' and to create the `stow' script
itself, using Makefile.in and stow.in as templates. Finally, it
creates a shell script `config.status' that you can run in the future
to recreate the current configuration, a file `config.cache' that
saves the results of its tests to speed up reconfiguring, and a file
`config.log' containing other output.
The file `configure.in' is used to create `configure' by a program
called `autoconf'. You only need `configure.in' if you want to change
it or regenerate `configure' using a newer version of `autoconf'.
The file `Makefile.am' is used to create `Makefile.in' by a program
called `automake'. You only need `Makefile.am' if you want to change
it or regenerate `Makefile.in' using a newer version of `automake'.
Sharing Defaults
================
If you want to set default values for `configure' scripts to share,
you can create a site shell script called `config.site' that gives
default values for variables like `CC', `cache_file', and `prefix'.
`configure' looks for `PREFIX/share/config.site' if it exists, then
`PREFIX/etc/config.site' if it exists. Or, you can set the
`CONFIG_SITE' environment variable to the location of the site script.
A warning: not all `configure' scripts look for a site script.
Operation Controls
==================
`configure' recognizes the following options to control how it
operates.
`--cache-file=FILE'
Use and save the results of the tests in FILE instead of
`./config.cache'. Set FILE to `/dev/null' to disable caching, for
debugging `configure'.
`--help'
Print a summary of the options to `configure', and exit.
`--quiet'
`--silent'
`-q'
Do not print messages saying which checks are being made.
`--srcdir=DIR'
Look for the package's source code in directory DIR. Usually
`configure' can determine that directory automatically.
`--version'
Print the version of Autoconf used to generate the `configure'
script, and exit.
`configure' also accepts some other, not widely useful, options.

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## Process this file with Automake to produce Makefile.in
AUTOMAKE_OPTIONS = dist-shar
bin_SCRIPTS = stow
info_TEXINFOS = stow.texi
CLEANFILES = stow manual.html manual.texi
# The rules for manual.html and manual.texi are only used by
# the developer
manual.html: manual.texi
-rm -f $@
texi2html -expandinfo -menu -monolithic -verbose $<
manual.texi: stow.texi
-rm -f $@
cp $< $@

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News file for Stow.
* Changes in version 1.3:
** Added --restow option.
** Fixed handling of slashes in package names.
** Expanded configure-time search for Perl binary.
* Changes in version 1.2:
** Dependency on `pwd' removed.
** Perl 4 compatibility fixes.
** Manual expanded even more.
* Changes in version 1.1:
** Long and short options now accepted.
** Manual expanded.
** `make clean' removes stow (which is generated from stow.in).
* Initial public release (v1.0) of Stow.
Local variables:
mode: outline
End:

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This is GNU Stow, a program for managing the installation of software
packages, keeping them separate (/usr/local/stow/emacs
vs. /usr/local/stow/perl, for example) while making them appear to be
installed in the same place (/usr/local).
Stow is a Perl script which should run correctly under Perl 4 and Perl
5. You must install Perl before running Stow. For more information
about Perl, see http://www.perl.com/perl/.
You can get the latest information about Stow from
http://www.gnu.ai.mit.edu/software/stow/stow.html.
Stow was inspired by Carnegie Mellon's "Depot" program, but is
substantially simpler. Whereas Depot requires database files to keep
things in sync, Stow stores no extra state between runs, so there's no
danger (as there is in Depot) of mangling directories when file
hierarchies don't match the database. Also unlike Depot, Stow will
never delete any files, directories, or links that appear in a Stow
directory (e.g., /usr/local/stow/emacs), so it's always possible to
rebuild the target tree (e.g., /usr/local).
Stow is free software, licensed under the GNU General Public License,
which can be found in the file COPYING.
See INSTALL for installation instructions.
Please mail comments, questions, and criticisms to the author, Bob
Glickstein, <bobg+stow@zanshin.com>.

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Thanks to the following people for testing, using, commenting on, and
otherwise aiding the creation of Stow:
Miles Bader <miles@gnu.ai.mit.edu>
Greg Fox <fox@zanshin.com>
David Hartmann <davidh@zanshin.com>
Ben Liblit <liblit@well.com>
Gord Matzigkeit <gord@enci.ucalgary.ca>
Roland McGrath <roland@gnu.ai.mit.edu>
Jim Meyering <meyering@asic.sc.ti.com>
Fritz Mueller <fritzm@netcom.com>
Bart Schaefer <schaefer@nbn.com>
Richard Stallman <rms@gnu.ai.mit.edu>
Spencer Sun <zorak@netcom.com>
Tom Tromey <tromey@cygnus.com>
Steve Webster <srw@zanshin.com>

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-*- outline -*-
* Autodetect "foreign" stow directories
* Fix empty-dir problem (see "Known bugs" in the manual)
* Continue after conflicts.
When detecting a conflict, affected subparts of the Stow traversal can
be skipped while continuing with other subparts.
* Traverse links in the target tree?
From e-mail with meyering@na-net.ornl.gov:
> My /usr/local/info equivalent is a symlink to /share/info
> because I want installs on all systems to put info files in that
> directory. With that set-up, stow chokes on fact that
> /usr/local/info is a symlink.
[...] Stow is designed to be paranoid about modifying anything it
doesn't "own." If it finds a symlink in the target tree (e.g.,
/usr/local/info) which doesn't point into the stow tree, its
paranoid response is to leave it the hell alone. But I can see in
this case how traversing the link and populating the directory on
the far end would be OK. Question: is that a special
circumstance, or would it always be OK to populate the far end of
a symlink in the target tree (when the symlink points to a
directory in a context where a directory is needed)? And: if it's
a special circumstance requiring a command-line option, should the
option be a mere boolean (such as, "--traverse-target-links") or
should it be an enumeration of which links are OK to traverse
(such as, "--traversable='info man doc'")?
* Develop a mechanism for sharing files between packages.
This would solve the problem of maintaining N platform-specific copies
of a package, all of which have many platform-*independent* files
which could be shared, such as man pages, info files, etc.
* Option to ignore certain files in the stow tree.
For example, --ignore='*~ .#*' (skip Emacs and CVS backup files).
* Option to ignore links in the stow tree to certain places.
For example, --ignore-link='/*' (skip absolute links).

5
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automake --add-missing --copy --gnu
libtoolize --copy
aclocal
autoheader
autoconf

21
configure.in Normal file
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dnl Process this file with Autoconf to produce configure
AC_INIT(stow.in)
PACKAGE=stow
VERSION=1.3.2
AC_SUBST(PACKAGE)
AC_SUBST(VERSION)
AC_ARG_PROGRAM
fp_PROG_INSTALL
AC_PATH_PROGS(PERL, perl perl5 perl4, false)
if test "x$PERL" = xfalse
then
echo 'WARNING: Perl not found; you must edit line 1 of `stow'"'"
fi
AC_OUTPUT(Makefile stow)

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#!/bin/sh
# mdate-sh - get modification time of a file and pretty-print it
# Copyright (C) 1995 Software Foundation, Inc.
# Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, June 1995
#
# 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 2, 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# Prevent date giving response in another language.
LANG=C
export LANG
LC_ALL=C
export LC_ALL
LC_TIME=C
export LC_TIME
# Get the extended ls output of the file.
if ls -L /dev/null 1>/dev/null 2>&1; then
set - `ls -L -l $1`
else
set - `ls -l $1`
fi
# The month is at least the fourth argument.
# (3 shifts here, the next inside the loop)
shift
shift
shift
# Find the month. Next argument is day, followed by the year or time.
month=
until test $month
do
shift
case $1 in
Jan) month=January; nummonth=1;;
Feb) month=February; nummonth=2;;
Mar) month=March; nummonth=3;;
Apr) month=April; nummonth=4;;
May) month=May; nummonth=5;;
Jun) month=June; nummonth=6;;
Jul) month=July; nummonth=7;;
Aug) month=August; nummonth=8;;
Sep) month=September; nummonth=9;;
Oct) month=October; nummonth=10;;
Nov) month=November; nummonth=11;;
Dec) month=December; nummonth=12;;
esac
done
day=$2
# Here we have to deal with the problem that the ls output gives either
# the time of day or the year.
case $3 in
*:*) set `date`; eval year=\$$#
case $2 in
Jan) nummonthtod=1;;
Feb) nummonthtod=2;;
Mar) nummonthtod=3;;
Apr) nummonthtod=4;;
May) nummonthtod=5;;
Jun) nummonthtod=6;;
Jul) nummonthtod=7;;
Aug) nummonthtod=8;;
Sep) nummonthtod=9;;
Oct) nummonthtod=10;;
Nov) nummonthtod=11;;
Dec) nummonthtod=12;;
esac
# For the first six month of the year the time notation can also
# be used for files modified in the last year.
if (expr $nummonth \> $nummonthtod) > /dev/null;
then
year=`expr $year - 1`
fi;;
*) year=$3;;
esac
# The result.
echo $day $month $year

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#!@PERL@
# GNU Stow - manage the installation of multiple software packages
# Copyright 1993, 1994, 1995, 1996 by Bob Glickstein
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$ProgramName = $0;
$ProgramName =~ s,.*/,,;
$Version = '@VERSION@';
$Conflicts = 0;
$Delete = 0;
$NotReally = 0;
$Verbose = 0;
$ReportHelp = 0;
$Stow = &fastcwd;
$Target = undef;
$Restow = 0;
while (@ARGV && ($_ = $ARGV[0]) && /^-/) {
$opt = $';
shift;
last if /^--$/;
if ($opt =~ /^-/) {
$opt = $';
if ($opt =~ /^no?$/i) {
$NotReally = 1;
} elsif ($opt =~ /^c(o(n(f(l(i(c(ts?)?)?)?)?)?)?)?$/i) {
$Conflicts = 1;
$NotReally = 1;
} elsif ($opt =~ /^dir?/i) {
$remainder = $';
if ($remainder =~ /^=/) {
$Stow = $'; # the stuff after the =
} else {
$Stow = shift;
}
} elsif ($opt =~ /^t(a(r(g(et?)?)?)?)?/i) {
$remainder = $';
if ($remainder =~ /^=/) {
$Target = $'; # the stuff after the =
} else {
$Target = shift;
}
} elsif ($opt =~ /^verb(o(se?)?)?/i) {
$remainder = $';
if ($remainder =~ /^=(\d+)/) {
$Verbose = $1;
} else {
++$Verbose;
}
} elsif ($opt =~ /^de(l(e(te?)?)?)?$/i) {
$Delete = 1;
} elsif ($opt =~ /^r(e(s(t(o(w?)?)?)?)?)?$/i) {
$Restow = 1;
} elsif ($opt =~ /^vers(i(on?)?)?$/i) {
&version();
} else {
&usage(($opt =~ /^h(e(lp?)?)?$/) ? undef :
"unknown or ambiguous option: $opt");
}
} else {
@opts = split(//, $opt);
while ($_ = shift(@opts)) {
if ($_ eq 'n') {
$NotReally = 1;
} elsif ($_ eq 'c') {
$Conflicts = 1;
$NotReally = 1;
} elsif ($_ eq 'd') {
$Stow = (join('', @opts) || shift);
@opts = ();
} elsif ($_ eq 't') {
$Target = (join('', @opts) || shift);
@opts = ();
} elsif ($_ eq 'v') {
++$Verbose;
} elsif ($_ eq 'D') {
$Delete = 1;
} elsif ($_ eq 'R') {
$Restow = 1;
} elsif ($_ eq 'V') {
&version();
} else {
&usage(($_ eq 'h') ? undef : "unknown option: $_");
}
}
}
}
&usage("No packages named") unless @ARGV;
$Target = &parent($Stow) unless $Target;
chdir($Target) || die "Cannot chdir to target tree $Target ($!)\n";
$Target = &fastcwd;
foreach $package (@ARGV) {
$package =~ s,/+$,,; # delete trailing slashes
if ($package =~ m,/,) {
die "$ProgramName: slashes not permitted in package names\n";
}
}
if ($Delete || $Restow) {
@Collections = @ARGV;
&Unstow('', &RelativePath($Target, $Stow));
}
if (!$Delete || $Restow) {
foreach $Collection (@ARGV) {
warn "Stowing package $Collection...\n" if $Verbose;
&StowContents($Collection, &RelativePath($Target, $Stow));
}
}
sub CommonParent {
local($dir1, $dir2) = @_;
local($result, $x);
local(@d1) = split(/\/+/, $dir1);
local(@d2) = split(/\/+/, $dir2);
while (@d1 && @d2 && (($x = shift(@d1)) eq shift(@d2))) {
$result .= "$x/";
}
chop($result);
$result;
}
sub RelativePath {
local($a, $b) = @_;
local($c) = &CommonParent($a, $b);
local(@a) = split(/\/+/, $a);
local(@b) = split(/\/+/, $b);
local(@c) = split(/\/+/, $c);
splice(@a, 0, @c + 0);
splice(@b, 0, @c + 0);
unshift(@b, (('..') x (@a + 0)));
&JoinPaths(@b);
}
sub JoinPaths {
local(@paths, @parts);
local ($x, $y);
local($result) = '';
$result = '/' if ($_[0] =~ /^\//);
foreach $x (@_) {
@parts = split(/\/+/, $x);
foreach $y (@parts) {
push(@paths, $y) if $y;
}
}
$result .= join('/', @paths);
}
sub Unstow {
local($targetdir, $stow) = @_;
local(@contents);
local($content);
local($linktarget, $stowmember, $collection);
local(@stowmember);
local($pure, $othercollection) = (1, '');
local($subpure, $subother);
local(@puresubdirs);
return (0, '') if (&JoinPaths($Target, $targetdir) eq $Stow);
return (0, '') if (-e &JoinPaths($Target, $targetdir, '.stow'));
warn sprintf("Unstowing in %s\n", &JoinPaths($Target, $targetdir))
if ($Verbose > 1);
opendir(DIR, &JoinPaths($Target, $targetdir)) ||
die "$ProgramName: Cannot read directory \"$dir\" ($!)\n";
@contents = readdir(DIR);
closedir(DIR);
foreach $content (@contents) {
next if (($content eq '.') || ($content eq '..'));
if (-l &JoinPaths($Target, $targetdir, $content)) {
($linktarget = readlink(&JoinPaths($Target,
$targetdir,
$content)))
|| die sprintf("%s: Cannot read link %s (%s)\n",
$ProgramName,
&JoinPaths($Target, $targetdir, $content),
$!);
if ($stowmember = &FindStowMember(&JoinPaths($Target,
$targetdir),
$linktarget)) {
@stowmember = split(/\/+/, $stowmember);
$collection = shift(@stowmember);
if (grep(($collection eq $_), @Collections)) {
&DoUnlink(&JoinPaths($Target, $targetdir, $content));
} elsif ($pure) {
if ($othercollection) {
$pure = 0 if ($collection ne $othercollection);
} else {
$othercollection = $collection;
}
}
} else {
$pure = 0;
}
} elsif (-d &JoinPaths($Target, $targetdir, $content)) {
($subpure, $subother) = &Unstow(&JoinPaths($targetdir, $content),
&JoinPaths('..', $stow));
if ($subpure) {
push(@puresubdirs, "$content/$subother");
}
if ($pure) {
if ($subpure) {
if ($othercollection) {
if ($subother) {
if ($othercollection ne $subother) {
$pure = 0;
}
}
} elsif ($subother) {
$othercollection = $subother;
}
} else {
$pure = 0;
}
}
} else {
$pure = 0;
}
}
if ((!$pure || !$targetdir) && @puresubdirs) {
&CoalesceTrees($targetdir, $stow, @puresubdirs);
}
($pure, $othercollection);
}
sub CoalesceTrees {
local($parent, $stow, @trees) = @_;
local($tree, $collection, $x);
foreach $x (@trees) {
($tree, $collection) = ($x =~ /^(.*)\/(.*)/);
&EmptyTree(&JoinPaths($Target, $parent, $tree));
&DoRmdir(&JoinPaths($Target, $parent, $tree));
if ($collection) {
&DoLink(&JoinPaths($stow, $collection, $parent, $tree),
&JoinPaths($Target, $parent, $tree));
}
}
}
sub EmptyTree {
local($dir) = @_;
local(@contents);
local($content);
opendir(DIR, $dir)
|| die "$ProgramName: Cannot read directory \"$dir\" ($!)\n";
@contents = readdir(DIR);
closedir(DIR);
foreach $content (@contents) {
next if (($content eq '.') || ($content eq '..'));
if (-l &JoinPaths($dir, $content)) {
&DoUnlink(&JoinPaths($dir, $content));
} elsif (-d &JoinPaths($dir, $content)) {
&EmptyTree(&JoinPaths($dir, $content));
&DoRmdir(&JoinPaths($dir, $content));
} else {
&DoUnlink(&JoinPaths($dir, $content));
}
}
}
sub StowContents {
local($dir, $stow) = @_;
local(@contents);
local($content);
warn "Stowing contents of $dir\n" if ($Verbose > 1);
opendir(DIR, &JoinPaths($Stow, $dir))
|| die "$ProgramName: Cannot read directory \"$dir\" ($!)\n";
@contents = readdir(DIR);
closedir(DIR);
foreach $content (@contents) {
next if (($content eq '.') || ($content eq '..'));
if (-d &JoinPaths($Stow, $dir, $content)) {
&StowDir(&JoinPaths($dir, $content), $stow);
} else {
&StowNondir(&JoinPaths($dir, $content), $stow);
}
}
}
sub StowDir {
local($dir, $stow) = @_;
local(@dir) = split(/\/+/, $dir);
local($collection) = shift(@dir);
local($subdir) = join('/', @dir);
local($linktarget, $stowsubdir);
warn "Stowing directory $dir\n" if ($Verbose > 1);
if (-l &JoinPaths($Target, $subdir)) {
($linktarget = readlink(&JoinPaths($Target, $subdir)))
|| die sprintf("%s: Could not read link %s (%s)\n",
$ProgramName,
&JoinPaths($Target, $subdir),
$!);
($stowsubdir =
&FindStowMember(sprintf('%s/%s', $Target,
join('/', @dir[0..($#dir - 1)])),
$linktarget))
|| (&Conflict($dir, $subdir), return);
if (-e &JoinPaths($Stow, $stowsubdir)) {
if ($stowsubdir eq $dir) {
warn sprintf("%s already points to %s\n",
&JoinPaths($Target, $subdir),
&JoinPaths($Stow, $dir))
if ($Verbose > 2);
return;
}
if (-d &JoinPaths($Stow, $stowsubdir)) {
&DoUnlink(&JoinPaths($Target, $subdir));
&DoMkdir(&JoinPaths($Target, $subdir));
&StowContents($stowsubdir, &JoinPaths('..', $stow));
&StowContents($dir, &JoinPaths('..', $stow));
} else {
(&Conflict($dir, $subdir), return);
}
} else {
&DoUnlink(&JoinPaths($Target, $subdir));
&DoLink(&JoinPaths($stow, $dir),
&JoinPaths($Target, $subdir));
}
} elsif (-e &JoinPaths($Target, $subdir)) {
if (-d &JoinPaths($Target, $subdir)) {
&StowContents($dir, &JoinPaths('..', $stow));
} else {
&Conflict($dir, $subdir);
}
} else {
&DoLink(&JoinPaths($stow, $dir),
&JoinPaths($Target, $subdir));
}
}
sub StowNondir {
local($file, $stow) = @_;
local(@file) = split(/\/+/, $file);
local($collection) = shift(@file);
local($subfile) = join('/', @file);
local($linktarget, $stowsubfile);
if (-l &JoinPaths($Target, $subfile)) {
($linktarget = readlink(&JoinPaths($Target, $subfile)))
|| die sprintf("%s: Could not read link %s (%s)\n",
$ProgramName,
&JoinPaths($Target, $subfile),
$!);
($stowsubfile =
&FindStowMember(sprintf('%s/%s', $Target,
join('/', @file[0..($#file - 1)])),
$linktarget))
|| (&Conflict($file, $subfile), return);
if (-e &JoinPaths($Stow, $stowsubfile)) {
(&Conflict($file, $subfile), return)
unless ($stowsubfile eq $file);
warn sprintf("%s already points to %s\n",
&JoinPaths($Target, $subfile),
&JoinPaths($Stow, $file))
if ($Verbose > 2);
} else {
&DoUnlink(&JoinPaths($Target, $subfile));
&DoLink(&JoinPaths($stow, $file),
&JoinPaths($Target, $subfile));
}
} elsif (-e &JoinPaths($Target, $subfile)) {
&Conflict($file, $subfile);
} else {
&DoLink(&JoinPaths($stow, $file),
&JoinPaths($Target, $subfile));
}
}
sub DoUnlink {
local($file) = @_;
warn "UNLINK $file\n" if $Verbose;
(unlink($file) || die "$ProgramName: Could not unlink $file ($!)\n")
unless $NotReally;
}
sub DoRmdir {
local($dir) = @_;
warn "RMDIR $dir\n" if $Verbose;
(rmdir($dir) || die "$ProgramName: Could not rmdir $dir ($!)\n")
unless $NotReally;
}
sub DoLink {
local($target, $name) = @_;
warn "LINK $name to $target\n" if $Verbose;
(symlink($target, $name) ||
die "$ProgramName: Could not symlink $name to $target ($!)\n")
unless $NotReally;
}
sub DoMkdir {
local($dir) = @_;
warn "MKDIR $dir\n" if $Verbose;
(mkdir($dir, 0777)
|| die "$ProgramName: Could not make directory $dir ($!)\n")
unless $NotReally;
}
sub Conflict {
local($a, $b) = @_;
if ($Conflicts) {
warn sprintf("CONFLICT: %s vs. %s\n", &JoinPaths($Stow, $a),
&JoinPaths($Target, $b));
} else {
die sprintf("%s: CONFLICT: %s vs. %s\n",
$ProgramName,
&JoinPaths($Stow, $a),
&JoinPaths($Target, $b));
}
}
sub FindStowMember {
local($start, $path) = @_;
local(@x) = split(/\/+/, $start);
local(@path) = split(/\/+/, $path);
local($x);
local(@d) = split(/\/+/, $Stow);
while (@path) {
$x = shift(@path);
if ($x eq '..') {
pop(@x);
return '' unless @x;
} elsif ($x) {
push(@x, $x);
}
}
while (@x && @d) {
if (($x = shift(@x)) ne shift(@d)) {
return '';
}
}
return '' if @d;
join('/', @x);
}
sub parent {
local($path) = join('/', @_);
local(@elts) = split(/\/+/, $path);
pop(@elts);
join('/', @elts);
}
sub usage {
local($msg) = shift;
if ($msg) {
print "$ProgramName: $msg\n";
}
print "$ProgramName (GNU Stow) version $Version\n\n";
print "Usage: $ProgramName [OPTION ...] PACKAGE ...\n";
print <<EOT;
-n, --no Do not actually make changes
-c, --conflicts Scan for conflicts, implies -n
-d DIR, --dir=DIR Set stow dir to DIR (default is current dir)
-t DIR, --target=DIR Set target to DIR (default is parent of stow dir)
-v, --verbose[=N] Increase verboseness (levels are 0,1,2,3;
-v or --verbose adds 1; --verbose=N sets level)
-D, --delete Unstow instead of stow
-R, --restow Restow (like stow -D followed by stow)
-V, --version Show Stow version number
-h, --help Show this help
EOT
exit($msg ? 1 : 0);
}
sub version {
print "$ProgramName (GNU Stow) version $Version\n";
exit(0);
}
# This is from Perl 4's fastcwd.pl, by John Bazik.
#
# Usage: $cwd = &fastcwd;
#
# This is a faster version of getcwd. It's also more dangerous
# because you might chdir out of a directory that you can't chdir back
# into.
sub fastcwd {
local($odev, $oino, $cdev, $cino, $tdev, $tino);
local(@path, $path);
local(*DIR);
($cdev, $cino) = stat('.');
for (;;) {
($odev, $oino) = ($cdev, $cino);
chdir('..');
($cdev, $cino) = stat('.');
last if $odev == $cdev && $oino == $cino;
opendir(DIR, '.');
for (;;) {
$_ = readdir(DIR);
next if $_ eq '.';
next if $_ eq '..';
last unless $_;
($tdev, $tino) = lstat($_);
last unless $tdev != $odev || $tino != $oino;
}
closedir(DIR);
unshift(@path, $_);
}
chdir($path = '/' . join('/', @path));
$path;
}
# Local variables:
# mode: perl
# End:

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@set UPDATED 11 October 1996
@set EDITION 1.3.2
@set VERSION 1.3.2