Provided by: makepatch_2.03-1.1_all 
NAME
makepatch - create script to update a source tree
SYNOPSIS
makepatch [ options ] old-src new-src
Introduction
Traditionally, source trees are updated with the patch program, processing patch information that is
generated by the diff program. Although diff and patch do a very good job at patching file contents,
most versions do not handle creating and deleting files and directories, and adjusting of file modes and
time stamps. Newer versions of diff and patch seem to be able to create files, and very new versions of
patch can remove files. But that's about it.
Another typical problem is that patch kits are typically downloaded from the Internet, or transmitted via
electronic mail. It is often desirable to verify the correctness of a patch kit before even attempting to
apply it.
The makepatch package is designed to overcome these limitations.
DESCRIPTION
The makepatch package contains two Perl programs: makepatch and applypatch.
makepatch will generate a patch kit from two source trees. It traverses the source directory and runs a
diff on each pair of corresponding files, accumulating the output into a patch kit. It knows about the
conventions for patch kits: if a file named "patchlevel.h" exists, it is handled first, so patch can
check the version of the source tree. Also, to deal with the non-perfect versions of patch that are in
use, it supplies ""Index:"" and ""Prereq:"" lines, so patch can correctly locate the files to patch, and
it relocates the patch to the current directory to avoid problems with creating new files.
The list of files can be specified in a so called MANIFEST file, but it can also be generated by
recursively traversing the source tree. Files can be excluded using shell style wildcards and Perl regex
patterns.
But that is not it! makepatch also inserts some additional information in the patch kit for use by the
applypatch program.
It is important to emphasize that the generated patch kit is still valid input for patch. When used with
patch, there are no verifications and problems may arise when new files need to be created. makepatch
prepends a small shell script in front of the patch kit that creates the necessary files and directories
for the patch process. If you can not run applypatch for some reason, you can run the patch kit as a
shell script to prepare the source directory for the patching process.
The applypatch program will do the following:
• It will extensively verify that the patch kit is complete and not corrupted during transfer.
• It will apply some heuristics to verify that the directory in which the patch will be applied does
indeed contain the expected sources.
• It creates files and directories as necessary.
• It applies the patch by running the patch program.
• Upon completion, obsolete files, directories and ".orig" files are removed, file modes of new files
are set, and the timestamps of all patched files are adjusted.
Note that applypatch only requires the patch program. It does not rely on a shell or shell tools. This
makes it possible to apply patches on non-Unix systems.
General usage
Suppose you have an archive `"pkg-1.6.tar.gz"' containing the sources for package `"pkg"' version 1.6,
and a directory tree `"pkg-1.7"' containing the sources for version 1.7. The following command will
generate a patch kit that updates the 1.6 sources into their 1.7 versions:
makepatch pkg-1.6.tar.gz pkg-1.7 > pkg-1.6-1.7.patch
To apply this script, go to the directory containing the 1.6 sources and feed the script to applypatch:
cd old/pkg-1.6
applypatch pkg-1.6-1.7.patch
applypatch will verify that it is executing in the right place and make all necessary updates.
By default, makepatch will provide a few lines of progress information, for example:
Extracting pkg-1.6.tar.gz to /tmp/mp21575.d/old...
Manifest MANIFEST for pkg-1.6 contains 1083 files.
Manifest MANIFEST for pkg-1.7 contains 1292 files.
Processing the filelists ...
Collecting patches ...
266 files need to be patched.
216 files and 8 directories need to be created.
7 files need to be removed.
applypatch will provide no feedback information by default.
Makepatch arguments
makepatch requires two arguments: old_src and new_src.
old-src
This is the name of either a single file or a directory that contains copies of the older version of
the target files; in other words, copies of the files prior to any modifications.
Alternatively, it may be the name of an archive that holds the files to be processed. Allowable
archive formats are gzipped tar (name ends in "".tar.gz"" or "".tgz""), bzipped tar (name ends in
"".tar.bz2""), plain tar (name ends in "".tar"" and zip (name ends in "".zip"").
new-src
This is the name of either a single file or a directory that contains copies of the newer version of
the target files; in other words, copies of the files after the modifications have been made.
Alternatively, it may be the name of an archive that holds the files to be processed.
The patch script generated by makepatch will take care of creating new files and directories, update
existing files, and remove files and directories that are no longer present in the new-src directory.
MANIFEST files
The purpose of a manifest file is to provide the list of files that constitute a package. Manifest files
are traditionally called ""MANIFEST"" and reside in the top level directory of the package.
Although there is no formal standard for the contents of manifest files, makepatch uses the following
rules:
• If the second line from the manifest file looks like a separator line (e.g. it is empty, or contains
only dashes), it is discarded and so is the first line.
• Empty lines and lines that start with a "#" are ignored.
• If there are multiple space-separated "words" on a line, the first word is considered to be the
filename.
Default treatment
By default, makepatch looks for files named ""MANIFEST"" in the top level directories of the old and the
new source trees. If these files (or one of them) are found, they are used. If no manifest file could be
found, the package is assumed to consist of all files in the directory.
The default name of the default manifest file can be modified with the command line option
""-automanifest"", see Section "Command line options".
Explicitly naming of manifest files
Command line options ""-oldmanifest"" and ""-newmanifest"" can be used to explicitly designate old and
new manifest files. Option ""-manifest"" is a short way to set one manifest file for both the old and new
source trees.
Suppress manifest file processing
Command line option ""-nomanifest"" can be used to suppress all manifest file processing. The package is
assumed to consist of all files in the source directories.
Makepatch options
makepatch takes several options to control its behaviour. Options are usually specified on the command
line, but makepatch can take options from three sources in the following order:
• Environment variable MAKEPATCHINIT.
When this environment variable is set its contents are considered to be command line options that are
processed upon startup. All normal options are allowed, plus one: -rcfile filename. Option -rcfile
can be used to specify an alternate option file, see below.
• Options files.
makepatch first tries to process a file named /etc/makepatchrc. (This is a Unix-ism.) It is okay if
this file is missing.
Next, makepatch will process a file named .makepatchrc in the user's home directory, if it exists.
After processing this file, makepatch will process a file named .makepatchrc in the current
directory, if it exists. An alternative name for this file can be specified with option -rcfile in
environment variable MAKEPATCHINIT. This is the only way to specify an alternative options file name.
In all option files, empty lines and lines starting with ";" or "#" are ignored. All other lines are
considered to contain options exactly as if they had been supplied on the command line.
• The command line.
Command line options
Options are matched case insensitive, and may be abbreviated to uniqueness.
-description text
Provide a descriptive text for this patch. Multiple -description options may be supplied.
If no description is provided, the program try to guess one. This is usually possible if both
directories are simple names, e.g. '"pkg-1.16"'. If no description can be determined, the program
will ask for one.
-diff cmd
If specified, cmd is the command to be used to generate the differences between the two versions of
the files. If not specified, this command defaults to ""diff -c"".
For best results, only use ""diff -c"" or ""diff -u"". In any case, it must produce either context
or unified diff output.
-patchlevel pfile
If specified, pfile indicates an alternate file that is to be used in lieu of "patchlevel.h".
-automanifest mfile
makepatch will automatically use manifest files of the given name if they appear in the directories.
The default name is "MANIFEST".
-nomanifest
Suppress using manifest files.
-manifest mfile
If specified, mfile indicates the name of the manifest file which consists of a list of the files
contained in both the old and the new directories.
-oldmanifest omfile
If specified, omfile indicates the name of the manifest file which consists of a list of the files
contained in the old directory. This option is designed to be used in conjunction with the
-newmanifest option. Note that the old and new directories must still be indicated.
-newmanifest nmfile
If specified, nmfile indicates the name of the manifest file which consists of a list of the files
contained in the new directory. This option is designed to be used in conjunction with the
-oldmanifest option. Note that the old and new directories must still be indicated.
-[no]recurse
makepatch recurses through directories by default. Option -norecurse prevents recursion beyond the
initial directories.
-[no]follow
If set, symbolic links to directories are traversed as if they were real directories.
-infocmd command
If specified, the output of running command will be added before each patch chunk. command will
undergo the following substitutions first: %oP will be replaced by the name of the old file, %nP will
be replaced by the name of the new file. "%%" will be replaced by a single "%"; other "%" sequences
may be added in future versions. When a new file is being created, the name of the new file will be
supplied for both %oP and %nP.
Note that %oP and %nP are modeled after the "%" sequences of find -printf.
-exclude pattern
If specified, files that match the shell pattern pattern will be excluded. Only wildcard characters
"*" and "?", and character classes "[...]" are handled. Multiple -exclude options may be supplied.
-exclude-regex pattern
If specified, files and directories that match the Perl regular expression pattern pattern will be
excluded. Multiple -exclude-regex options may be supplied.
-[no]exclude-standard
Set by default. If set, a common set of files and directories are ignored.
See also section "Standard Exclude Patterns".
-[no]exclude-cvs
If set, files and directories that are usually part of version control system CVS are excluded.
Also, ".cvsignore" files are honoured just like CVS does it.
See also section "Standard Exclude Patterns".
-[no]exclude-rcs
If set, files and directories that are usually part of version control system RCS are excluded.
See also section "Standard Exclude Patterns".
-[no]exclude-sccs
If set, files and directories that are usually part of version control system SCCS are excluded.
See also section "Standard Exclude Patterns".
-[no]exclude-vc
Short for (re)setting -exclude-rcs, -exclude-cvs, and -exclude-sccs.
-[no]ignore-cvs-keywords
Differences in CVS keyword data (e.g. "Id", "Header", "Revision") are ignored, provided there are no
other differences in the same hunk. This option passes a very hairy regex to the
--ignore-matching-lines option of the diff program, and hence requires GNU diff. This restriction may
be lifted in a future version.
-[no]ignore-rcs-keywords
Same as -[no]ignore-cvs-keywords.
-extract pattern=command
Define additional extraction rules for archives. If the name of the source or destination matches the
Perl pattern, the command is executed with the archive on standard input and the current directory
set to the location where the files must be extracted. Multiple -extract options may be supplied.
User defined rules override built-in rules.
Builtin rules are:
.+\.(tar\.gz|tgz) => "gzip -d | tar xpf -"
.+\.(tar\.bz2) => "bzip2 -d | tar xpf -"
.+\.tar => "tar xf -"
.+\.zip => "unzip -"
The patterns are implicitly anchored to the begin and end of the filename.
-[no]ident
If set, the program name and version is reported.
-[no]verbose
This is set by default, making makepatch display information concerning its activity to stderr.
-[no]quiet
The opposite of -verbose. If set, this instructs makepatch to suppress the display of activity
information.
-[no]help
If set, this causes a short help message to be displayed, after which the program immediately exits.
Standard Exclude Patterns
The following file patterns are always excluded:
*~ *.a *.bak *.BAK *.elc *.exe *.gz *.ln *.o *.obj
*.olb *.old *.orig *.rej *.so *.Z
.del-* .make.state .nse_depinfo core
tags TAGS
Option -exclude-sccs adds:
p.* s.* SCCS
Option -exclude-rcs adds:
,* *,v RCS RCSLOG
Option -exclude-cvs adds ".cvsignore" patterns, and:
.#* #* _$* *$ CVS CVS.adm cvslog.*
Please let me know if I missed some.
Environment variables
MAKEPATCHINIT
When this environment variable is set its contents is considered to be command line options that are
processed upon startup. All normal options are allowed, plus one: -rcfile filename. If -rcfile is
specified, the file is read and all lines of it are considered to contain option settings as
described in section "Makepatch options".
TMPDIR
"TMPDIR" can be used to designate the area where temporary files are placed. It defaults to "/tmp".
TEMP
"TEMP" can be used as an alternative to "TMPDIR".
Examples
Suppose you have a directory tree `"pkg-1.6"' containing the sources for package `"pkg"' version 1.6, and
a directory tree `"pkg-1.7"' containing the sources for version 1.7. The following command will generate
a patch kit that updates the 1.6 sources into their 1.7 versions:
makepatch pkg-1.6 pkg-1.7 > pkg-1.6-1.7.patch
To apply this script, go to the pkg-1.6 directory and feed the script to applypatch:
cd old/pkg-1.6
applypatch pkg-1.6-1.7.patch
applypatch will verify that it is executing in the right place and make all necessary updates.
This is one way to generate and use manifest files:
(cd pkg-1.6; find . -type f -print > OLDMANIFEST)
(cd pkg-1.7; find . -type f -print > NEWMANIFEST)
makepatch \
-oldmanifest pkg-1.6/OLDMANIFEST \
-newmanifest pkg-1.7/NEWMANIFEST \
pkg-1.6 pkg-1.7 > pkg-1.6-1.7.diff
Bugs and restrictions
Much of the job of makepatch is processing file names. makepatch has been tested extensively on Unix
systems, but it is not guaranteed to work on other systems.
applypatch is repeatedly reported to correctly process makepatch generated patch kits on modern 32-bit
Windows systems as well.
makepatch does not know about symbolic links. These will be treated like plain files.
Wrong results can be generated if the file lists that are used or generated use different path
separators.
SEE ALSO
applypatch(1), diff(1), patch(1), perl(1), rm(1).
AUTHOR AND CREDITS
Johan Vromans (jvromans@squirrel.nl) wrote the program, with a little help and inspiration from: Jeffery Small, Ulrich Pfeifer, Nigel Metheringham, Julian Yip, Tim Bunce, Gurusamy Sarathy, Hugo van der Sanden, Rob Browning, Joshua Pritikin, and others.
COPYRIGHT AND DISCLAIMER
This program is Copyright 1992,2004,2006 by Squirrel Consultancy. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the terms of either: a) the
GNU General Public License as published by the Free Software Foundation; either version 1, or (at your
option) any later version, or b) the "Artistic License" which comes with Perl.
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 either the GNU General
Public License or the Artistic License for more details.