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PK ~[5
AUTHORSnu W+A -----------------------------------
GNU make development up to version 3.75 by:
Roland McGrath
Development starting with GNU make 3.76 by:
Paul D. Smith
Additional development starting with GNU make 3.81 by:
Boris Kolpackov
GNU Make User's Manual
Written by:
Richard M. Stallman
Edited by:
Roland McGrath
Bob Chassell
Melissa Weisshaus
Paul D. Smith
-----------------------------------
GNU make porting efforts:
Port to VMS by:
Klaus Kaempf
Hartmut Becker
Archive support/Bug fixes by:
John W. Eaton
Martin Zinser
Port to Amiga by:
Aaron Digulla
Port to MS-DOS (DJGPP), OS/2, and MS-Windows (native/MinGW) by:
DJ Delorie
Rob Tulloh
Eli Zaretskii
Jonathan Grant
Andreas Beuning
Earnie Boyd
-----------------------------------
Other contributors:
Janet Carson
Howard Chu
Paul Eggert
Klaus Heinz
Michael Joosten
Jim Kelton
David Lubbren
Tim Magill
Markus Mauhart
Greg McGary
Thomas Riedl
Han-Wen Nienhuys
Andreas Schwab
Carl Staelin (Princeton University)
Ian Stewartson (Data Logic Limited)
With suggestions/comments/bug reports from a cast of ... well ...
hundreds, anyway :)
-------------------------------------------------------------------------------
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
Free Software Foundation, Inc.
This file is part of GNU Make.
GNU Make is free software; you can redistribute it and/or modify it under the
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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
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PK ~['- READMEnu W+A This directory contains the 3.81 release of GNU Make.
See the file NEWS for the user-visible changes from previous releases.
In addition, there have been bugs fixed.
Please check the system-specific notes below for any caveats related to
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It has been reported that the XLC 1.2 compiler on AIX 3.2 is buggy such
that if you compile make with `cc -O' on AIX 3.2, it will not work
correctly. It is said that using `cc' without `-O' does work.
The standard /bin/sh on SunOS 4.1.3_U1 and 4.1.4 is broken and cannot be
used to configure GNU make. Please install a different shell such as
bash or pdksh in order to run "configure". See this message for more
information:
http://mail.gnu.org/archive/html/bug-autoconf/2003-10/msg00190.html
One area that is often a problem in configuration and porting is the code
to check the system's current load average. To make it easier to test and
debug this code, you can do `make check-loadavg' to see if it works
properly on your system. (You must run `configure' beforehand, but you
need not build Make itself to run this test.)
Another potential source of porting problems is the support for large
files (LFS) in configure for those operating systems that provide it.
Please report any bugs that you find in this area. If you run into
difficulties, then as a workaround you should be able to disable LFS by
adding the `--disable-largefile' option to the `configure' script.
On systems that support micro- and nano-second timestamp values and
where stat(2) provides this information, GNU make will use it when
comparing timestamps to get the most accurate possible result. However,
note that many current implementations of tools that *set* timestamps do
not preserve micro- or nano-second granularity. This means that "cp -p"
and other similar tools (tar, etc.) may not exactly duplicate timestamps
with micro- and nano-second granularity on some systems. If your build
system contains rules that depend on proper behavior of tools like "cp
-p", you should consider using the .LOW_RESOLUTION_TIME pseudo-target to
force make to treat them properly. See the manual for details.
Ports
-----
- See README.customs for details on integrating GNU make with the
Customs distributed build environment from the Pmake distribution.
- See readme.vms for details about GNU Make on OpenVMS.
- See README.Amiga for details about GNU Make on AmigaDOS.
- See README.W32 for details about GNU Make on Windows NT, 95, or 98.
- See README.DOS for compilation instructions on MS-DOS and MS-Windows
using DJGPP tools.
A precompiled binary of the MSDOS port of GNU Make is available as part
of DJGPP; see the WWW page http://www.delorie.com/djgpp/ for more
information.
Please note there are two _separate_ ports of GNU make for Microsoft
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and a DOS-based tool built with DJGPP. Please be sure you are looking
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-------------------------------------------------------------------------------
Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation,
Inc.
This file is part of GNU Make.
GNU Make 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.
GNU Make 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
GNU Make; see the file COPYING. If not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
PK ~[k䢁 NEWSnu W+A GNU make NEWS -*-indented-text-*-
History of user-visible changes.
1 April 2006
See the end of this file for copyrights and conditions.
All changes mentioned here are more fully described in the GNU make
manual, which is contained in this distribution as the file doc/make.texi.
See the README file and the GNU make manual for instructions for
reporting bugs.
Version 3.81
* GNU make is ported to OS/2.
* GNU make is ported to MinGW. The MinGW build is only supported by
the build_w32.bat batch file; see the file README.W32 for more
details.
* WARNING: Future backward-incompatibility!
Up to and including this release, the '$?' variable does not contain
any prerequisite that does not exist, even though that prerequisite
might have caused the target to rebuild. Starting with the _next_
release of GNU make, '$?' will contain all prerequisites that caused
the target to be considered out of date. See this Savannah bug:
http://savannah.gnu.org/bugs/index.php?func=detailitem&item_id=16051
* WARNING: Backward-incompatibility!
GNU make now implements a generic "second expansion" feature on the
prerequisites of both explicit and implicit (pattern) rules. In order
to enable this feature, the special target '.SECONDEXPANSION' must be
defined before the first target which takes advantage of it. If this
feature is enabled then after all rules have been parsed the
prerequisites are expanded again, this time with all the automatic
variables in scope. This means that in addition to using standard
SysV $$@ in prerequisites lists, you can also use complex functions
such as $$(notdir $$@) etc. This behavior applies to implicit rules,
as well, where the second expansion occurs when the rule is matched.
However, this means that when '.SECONDEXPANSION' is enabled you must
double-quote any "$" in your filenames; instead of "foo: boo$$bar" you
now must write "foo: foo$$$$bar". Note that the SysV $$@ etc. feature,
which used to be available by default, is now ONLY available when the
.SECONDEXPANSION target is defined. If your makefiles take advantage
of this SysV feature you will need to update them.
* WARNING: Backward-incompatibility!
In order to comply with POSIX, the way in which GNU make processes
backslash-newline sequences in command strings has changed. If your
makefiles use backslash-newline sequences inside of single-quoted
strings in command scripts you will be impacted by this change. See
the GNU make manual subsection "Splitting Command Lines" (node
"Splitting Lines"), in section "Command Syntax", chapter "Writing the
Commands in Rules", for details.
* WARNING: Backward-incompatibility!
Some previous versions of GNU make had a bug where "#" in a function
invocation such as $(shell ...) was treated as a make comment. A
workaround was to escape these with backslashes. This bug has been
fixed: if your makefile uses "\#" in a function invocation the
backslash is now preserved, so you'll need to remove it.
* New command-line option: -L (--check-symlink-times). On systems that
support symbolic links, if this option is given then GNU make will
use the most recent modification time of any symbolic links that are
used to resolve target files. The default behavior remains as it
always has: use the modification time of the actual target file only.
* The "else" conditional line can now be followed by any other valid
conditional on the same line: this does not increase the depth of the
conditional nesting, so only one "endif" is required to close the
conditional.
* All pattern-specific variables that match a given target are now used
(previously only the first match was used).
* Target-specific variables can be marked as exportable using the
"export" keyword.
* In a recursive $(call ...) context, any extra arguments from the outer
call are now masked in the context of the inner call.
* Implemented a solution for the "thundering herd" problem with "-j -l".
This version of GNU make uses an algorithm suggested by Thomas Riedl
to track the number of jobs started in the
last second and artificially adjust GNU make's view of the system's
load average accordingly.
* New special variables available in this release:
- .INCLUDE_DIRS: Expands to a list of directories that make searches
for included makefiles.
- .FEATURES: Contains a list of special features available in this
version of GNU make.
- .DEFAULT_GOAL: Set the name of the default goal make will
use if no goals are provided on the command line.
- MAKE_RESTARTS: If set, then this is the number of times this
instance of make has been restarted (see "How Makefiles Are Remade"
in the manual).
- New automatic variable: $| (added in 3.80, actually): contains all
the order-only prerequisites defined for the target.
* New functions available in this release:
- $(lastword ...) returns the last word in the list. This gives
identical results as $(word $(words ...) ...), but is much faster.
- $(abspath ...) returns the absolute path (all "." and ".."
directories resolved, and any duplicate "/" characters removed) for
each path provided.
- $(realpath ...) returns the canonical pathname for each path
provided. The canonical pathname is the absolute pathname, with
all symbolic links resolved as well.
- $(info ...) prints its arguments to stdout. No makefile name or
line number info, etc. is printed.
- $(flavor ...) returns the flavor of a variable.
- $(or ...) provides a short-circuiting OR conditional: each argument
is expanded. The first true (non-empty) argument is returned; no
further arguments are expanded. Expands to empty if there are no
true arguments.
- $(and ...) provides a short-circuiting AND conditional: each
argument is expanded. The first false (empty) argument is
returned; no further arguments are expanded. Expands to the last
argument if all arguments are true.
* Changes made for POSIX compatibility:
- Only touch targets (under -t) if they have at least one command.
- Setting the SHELL make variable does NOT change the value of the
SHELL environment variable given to programs invoked by make. As
an enhancement to POSIX, if you export the make variable SHELL then
it will be set in the environment, just as before.
* On MS Windows systems, explicitly setting SHELL to a pathname ending
in "cmd" or "cmd.exe" (case-insensitive) will force GNU make to use
the DOS command interpreter in batch mode even if a UNIX-like shell
could be found on the system.
* On VMS there is now support for case-sensitive filesystems such as ODS5.
See the readme.vms file for information.
* Parallel builds (-jN) no longer require a working Bourne shell on
Windows platforms. They work even with the stock Windows shells, such
as cmd.exe and command.com.
* Updated to autoconf 2.59, automake 1.9.5, and gettext 0.14.1. Users
should not be impacted.
* New translations for Swedish, Chinese (simplified), Ukrainian,
Belarusian, Finnish, Kinyarwandan, and Irish. Many updated
translations.
A complete list of bugs fixed in this version is available here:
http://savannah.gnu.org/bugs/index.php?group=make&report_id=111&fix_release_id=103
Version 3.80
* A new feature exists: order-only prerequisites. These prerequisites
affect the order in which targets are built, but they do not impact
the rebuild/no-rebuild decision of their dependents. That is to say,
they allow you to require target B be built before target A, without
requiring that target A will always be rebuilt if target B is updated.
Patch for this feature provided by Greg McGary .
* For compatibility with SysV make, GNU make now supports the peculiar
syntax $$@, $$(@D), and $$(@F) in the prerequisites list of a rule.
This syntax is only valid within explicit and static pattern rules: it
cannot be used in implicit (suffix or pattern) rules. Edouard G. Parmelan
provided a patch implementing this feature; however, I
decided to implement it in a different way.
* The argument to the "ifdef" conditional is now expanded before it's
tested, so it can be a constructed variable name.
Similarly, the arguments to "export" (when not used in a variable
definition context) and "unexport" are also now expanded.
* A new function is defined: $(value ...). The argument to this
function is the _name_ of a variable. The result of the function is
the value of the variable, without having been expanded.
* A new function is defined: $(eval ...). The arguments to this
function should expand to makefile commands, which will then be
evaluated as if they had appeared in the makefile. In combination
with define/endef multiline variable definitions this is an extremely
powerful capability. The $(value ...) function is also sometimes
useful here.
* A new built-in variable is defined, $(MAKEFILE_LIST). It contains a
list of each makefile GNU make has read, or started to read, in the
order in which they were encountered. So, the last filename in the
list when a makefile is just being read (before any includes) is the
name of the current makefile.
* A new built-in variable is defined: $(.VARIABLES). When it is
expanded it returns a complete list of variable names defined by all
makefiles at that moment.
* A new command-line option is defined, -B or --always-make. If
specified GNU make will consider all targets out-of-date even if they
would otherwise not be.
* The arguments to $(call ...) functions were being stored in $1, $2,
etc. as recursive variables, even though they are fully expanded
before assignment. This means that escaped dollar signs ($$ etc.)
were not behaving properly. Now the arguments are stored as simple
variables. This may mean that if you added extra escaping to your
$(call ...) function arguments you will need to undo it now.
* The variable invoked by $(call ...) can now be recursive: unlike other
variables it can reference itself and this will not produce an error
when it is used as the first argument to $(call ...) (but only then).
* New pseudo-target .LOW_RESOLUTION_TIME, superseding the configure
option --disable-nsec-timestamps. You might need this if your build
process depends on tools like "cp -p" preserving time stamps, since
"cp -p" (right now) doesn't preserve the subsecond portion of a time
stamp.
* Updated translations for French, Galician, German, Japanese, Korean,
and Russian. New translations for Croatian, Danish, Hebrew, and
Turkish.
* Updated internationalization support to Gettext 0.11.5.
GNU make now uses Gettext's "external" feature, and does not include
any internationalization code itself. Configure will search your
system for an existing implementation of GNU Gettext (only GNU Gettext
is acceptable) and use it if it exists. If not, NLS will be disabled.
See ABOUT-NLS for more information.
* Updated to autoconf 2.54 and automake 1.7. Users should not be impacted.
A complete list of bugs fixed in this version is available here:
http://savannah.gnu.org/bugs/index.php?group=make&report_id=111&fix_release_id=102
Version 3.79.1
* .SECONDARY with no prerequisites now prevents any target from being
removed because make thinks it's an intermediate file, not just those
listed in the makefile.
* New configure option --disable-nsec-timestamps, but this was
superseded in later versions by the .LOW_RESOLUTION_TIME pseudo-target.
Version 3.79
* GNU make optionally supports internationalization and locales via the
GNU gettext (or local gettext if suitable) package. See the ABOUT-NLS
file for more information on configuring GNU make for NLS.
* Previously, GNU make quoted variables such as MAKEFLAGS and
MAKEOVERRIDES for proper parsing by the shell. This allowed them to
be used within make build scripts. However, using them there is not
proper behavior: they are meant to be passed to subshells via the
environment. Unfortunately the values were not quoted properly to be
passed through the environment. This meant that make didn't properly
pass some types of command line values to submakes.
With this version we change that behavior: now these variables are
quoted properly for passing through the environment, which is the
correct way to do it. If you previously used these variables
explicitly within a make rule you may need to re-examine your use for
correctness given this change.
* A new pseudo-target .NOTPARALLEL is available. If defined, the
current makefile is run serially regardless of the value of -j.
However, submakes are still eligible for parallel execution.
* The --debug option has changed: it now allows optional flags
controlling the amount and type of debugging output. By default only
a minimal amount information is generated, displaying the names of
"normal" targets (not makefiles) that were deemed out of date and in
need of being rebuilt.
Note that the -d option behaves as before: it takes no arguments and
all debugging information is generated.
* The `-p' (print database) output now includes filename and linenumber
information for variable definitions, to aid debugging.
* The wordlist function no longer reverses its arguments if the "start"
value is greater than the "end" value. If that's true, nothing is
returned.
* Hartmut Becker provided many updates for the VMS port of GNU make.
See the readme.vms file for more details.
Version 3.78
* Two new functions, $(error ...) and $(warning ...) are available. The
former will cause make to fail and exit immediately upon expansion of
the function, with the text provided as the error message. The latter
causes the text provided to be printed as a warning message, but make
proceeds normally.
* A new function $(call ...) is available. This allows users to create
their own parameterized macros and invoke them later. Original
implementation of this function was provided by Han-Wen Nienhuys
.
* A new function $(if ...) is available. It provides if-then-else
capabilities in a builtin function. Original implementation of this
function was provided by Han-Wen Nienhuys .
* Make defines a new variable, .LIBPATTERNS. This variable controls how
library dependency expansion (dependencies like ``-lfoo'') is performed.
* Make accepts CRLF sequences as well as traditional LF, for
compatibility with makefiles created on other operating systems.
* Make accepts a new option: -R, or --no-builtin-variables. This option
disables the definition of the rule-specific builtin variables (CC,
LD, AR, etc.). Specifying this option forces -r (--no-builtin-rules)
as well.
* A "job server" feature, suggested by Howard Chu .
On systems that support POSIX pipe(2) semantics, GNU make can now pass
-jN options to submakes rather than forcing them all to use -j1. The
top make and all its sub-make processes use a pipe to communicate with
each other to ensure that no more than N jobs are started across all
makes. To get the old behavior of -j back, you can configure make
with the --disable-job-server option.
* The confusing term "dependency" has been replaced by the more accurate
and standard term "prerequisite", both in the manual and in all GNU make
output.
* GNU make supports the "big archive" library format introduced in AIX 4.3.
* GNU make supports large files on AIX, HP-UX, and IRIX. These changes
were provided by Paul Eggert . (Large file
support for Solaris and Linux was introduced in 3.77, but the
configuration had issues: these have also been resolved).
* The Windows 95/98/NT (W32) version of GNU make now has native support
for the Cygnus Cygwin release B20.1 shell (bash).
* The GNU make regression test suite, long available separately "under
the table", has been integrated into the release. You can invoke it
by running "make check" in the distribution. Note that it requires
Perl (either Perl 4 or Perl 5) to run.
Version 3.77
* Implement BSD make's "?=" variable assignment operator. The variable
is assigned the specified value only if that variable is not already
defined.
* Make defines a new variable, "CURDIR", to contain the current working
directory (after the -C option, if any, has been processed).
Modifying this variable has no effect on the operation of make.
* Make defines a new default RCS rule, for new-style master file
storage: ``% :: RCS/%'' (note no ``,v'' suffix).
Make defines new default rules for DOS-style C++ file naming
conventions, with ``.cpp'' suffixes. All the same rules as for
``.cc'' and ``.C'' suffixes are provided, along with LINK.cpp and
COMPILE.cpp macros (which default to the same value as LINK.cc and
COMPILE.cc). Note CPPFLAGS is still C preprocessor flags! You should
use CXXFLAGS to change C++ compiler flags.
* A new feature, "target-specific variable values", has been added.
This is a large change so please see the appropriate sections of the
manual for full details. Briefly, syntax like this:
TARGET: VARIABLE = VALUE
defines VARIABLE as VALUE within the context of TARGET. This is
similar to SunOS make's "TARGET := VARIABLE = VALUE" feature. Note
that the assignment may be of any type, not just recursive, and that
the override keyword is available.
COMPATIBILITY: This new syntax means that if you have any rules where
the first or second dependency has an equal sign (=) in its name,
you'll have to escape them with a backslash: "foo : bar\=baz".
Further, if you have any dependencies which already contain "\=",
you'll have to escape both of them: "foo : bar\\\=baz".
* A new appendix listing the most common error and warning messages
generated by GNU make, with some explanation, has been added to the
GNU make User's Manual.
* Updates to the GNU make Customs library support (see README.customs).
* Updates to the Windows 95/NT port from Rob Tulloh (see README.W32),
and to the DOS port from Eli Zaretski (see README.DOS).
Version 3.76.1
* Small (but serious) bug fix. Quick rollout to get into the GNU source CD.
Version 3.76
* GNU make now uses automake to control Makefile.in generation. This
should make it more consistent with the GNU standards.
* VPATH functionality has been changed to incorporate the VPATH+ patch,
previously maintained by Paul Smith . See the
manual.
* Make defines a new variable, `MAKECMDGOALS', to contain the goals that
were specified on the command line, if any. Modifying this variable
has no effect on the operation of make.
* A new function, `$(wordlist S,E,TEXT)', is available: it returns a
list of words from number S to number E (inclusive) of TEXT.
* Instead of an error, detection of future modification times gives a
warning and continues. The warning is repeated just before GNU make
exits, so it is less likely to be lost.
* Fix the $(basename) and $(suffix) functions so they only operate on
the last filename, not the entire string:
Command Old Result New Result
------- ---------- ----------
$(basename a.b) a a
$(basename a.b/c) a a.b/c
$(suffix a.b) b b
$(suffix a.b/c) b/c
* The $(strip) function now removes newlines as well as TABs and spaces.
* The $(shell) function now changes CRLF (\r\n) pairs to a space as well
as newlines (\n).
* Updates to the Windows 95/NT port from Rob Tulloh (see README.W32).
* Eli Zaretskii has updated the port to 32-bit protected mode on MSDOS
and MS-Windows, building with the DJGPP v2 port of GNU C/C++ compiler
and utilities. See README.DOS for details, and direct all questions
concerning this port to Eli Zaretskii or DJ
Delorie .
* John W. Eaton has updated the VMS port to support libraries and VPATH.
Version 3.75
* The directory messages printed by `-w' and implicitly in sub-makes,
are now omitted if Make runs no commands and has no other messages to print.
* Make now detects files that for whatever reason have modification times
in the future and gives an error. Files with such impossible timestamps
can result from unsynchronized clocks, or archived distributions
containing bogus timestamps; they confuse Make's dependency engine
thoroughly.
* The new directive `sinclude' is now recognized as another name for
`-include', for compatibility with some other Makes.
* Aaron Digulla has contributed a port to AmigaDOS. See README.Amiga for
details, and direct all Amiga-related questions to .
* Rob Tulloh of Tivoli Systems has contributed a port to Windows NT or 95.
See README.W32 for details, and direct all Windows-related questions to
.
Version 3.73
* Converted to use Autoconf version 2, so `configure' has some new options.
See INSTALL for details.
* You can now send a SIGUSR1 signal to Make to toggle printing of debugging
output enabled by -d, at any time during the run.
Version 3.72
* DJ Delorie has ported Make to MS-DOS using the GO32 extender.
He is maintaining the DOS port, not the GNU Make maintainer;
please direct bugs and questions for DOS to .
MS-DOS binaries are available for FTP from ftp.simtel.net in
/pub/simtelnet/gnu/djgpp/.
* The `MAKEFLAGS' variable (in the environment or in a makefile) can now
contain variable definitions itself; these are treated just like
command-line variable definitions. Make will automatically insert any
variable definitions from the environment value of `MAKEFLAGS' or from
the command line, into the `MAKEFLAGS' value exported to children. The
`MAKEOVERRIDES' variable previously included in the value of `$(MAKE)'
for sub-makes is now included in `MAKEFLAGS' instead. As before, you can
reset `MAKEOVERRIDES' in your makefile to avoid putting all the variables
in the environment when its size is limited.
* If `.DELETE_ON_ERROR' appears as a target, Make will delete the target of
a rule if it has changed when its commands exit with a nonzero status,
just as when the commands get a signal.
* The automatic variable `$+' is new. It lists all the dependencies like
`$^', but preserves duplicates listed in the makefile. This is useful
for linking rules, where library files sometimes need to be listed twice
in the link order.
* You can now specify the `.IGNORE' and `.SILENT' special targets with
dependencies to limit their effects to those files. If a file appears as
a dependency of `.IGNORE', then errors will be ignored while running the
commands to update that file. Likewise if a file appears as a dependency
of `.SILENT', then the commands to update that file will not be printed
before they are run. (This change was made to conform to POSIX.2.)
Version 3.71
* The automatic variables `$(@D)', `$(%D)', `$(*D)', `$(
Copyright (C) 19yy
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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.
, 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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