Commit Graph

98 Commits

Author SHA1 Message Date
Junio C Hamano
7e74a73e6b Merge branch 'cw/maint-exec-defpath' into maint
* cw/maint-exec-defpath:
  autoconf: Check if <paths.h> exists and set HAVE_PATHS_H
  exec_cmd.c: replace hard-coded path list with one from <paths.h>
2010-06-16 16:33:47 -07:00
Jakub Narebski
bb15e38281 autoconf: Check if <paths.h> exists and set HAVE_PATHS_H
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-04-15 12:15:17 -07:00
Mark Rada
bb4bbf7582 Gitweb: add autoconfigure support for minifiers
This will allow users to set a JavaScript/CSS minifier when/if they run
the autoconfigure script while building git.

Signed-off-by: Mark Rada <marada@uwaterloo.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-04-02 21:23:38 -07:00
Junio C Hamano
347d04d0e2 Merge branch 'bw/no-python-autoconf'
* bw/no-python-autoconf:
  configure: Allow --without-python
  configure: Allow GIT_ARG_SET_PATH to handle --without-PROGRAM
2010-02-02 21:48:13 -08:00
Ben Walton
dc78250f15 configure: Allow --without-python
This patch allows someone to use configure to build git while at the
same time disabling the python remote helper code.  It leverages the
ability of GIT_ARG_SET_PATH to accept an optional second argument
indicating that --without-$PROGRAM is acceptable.

Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-01 13:03:55 -08:00
Ben Walton
f22cd7fcc5 configure: Allow GIT_ARG_SET_PATH to handle --without-PROGRAM
Add an optional second argument to both GIT_ARG_SET_PATH and
GIT_CONF_APPEND_PATH such that any value of the second argument will
enable configure to set NO_$PROGRAM in addition to an empty
$PROGRAM_PATH.  This is initially useful for allowing configure to
disable the use of python, as the remote helper code has nothing
leveraging it yet.

The Makefile already recognizes NO_PYTHON, but configure provided no
way to set it appropriately.

Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-02-01 13:03:54 -08:00
Dan McGee
7eb151d6e2 Make NO_PTHREADS the sole thread configuration variable
When the first piece of threaded code was introduced in commit 8ecce684, it
came with its own THREADED_DELTA_SEARCH Makefile option. Since this time,
more threaded code has come into the codebase and a NO_PTHREADS option has
also been added. Get rid of the original option as the newer, more generic
option covers everything we need.

Signed-off-by: Dan McGee <dpmcgee@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-31 11:50:50 -08:00
Junio C Hamano
e74f43f9b7 Merge branch 'sr/vcs-helper'
* sr/vcs-helper:
  tests: handle NO_PYTHON setting
  builtin-push: don't access freed transport->url
  Add Python support library for remote helpers
  Basic build infrastructure for Python scripts
  Allow helpers to report in "list" command that the ref is unchanged
  Fix various memory leaks in transport-helper.c
  Allow helper to map private ref names into normal names
  Add support for "import" helper command
  Allow specifying the remote helper in the url
  Add a config option for remotes to specify a foreign vcs
  Allow fetch to modify refs
  Use a function to determine whether a remote is valid
  Allow programs to not depend on remotes having urls
  Fix memory leak in helper method for disconnect

Conflicts:
	Documentation/git-remote-helpers.txt
	Makefile
	builtin-ls-remote.c
	builtin-push.c
	transport-helper.c
2009-12-26 14:03:16 -08:00
Johan Herland
d4e1b47a92 Basic build infrastructure for Python scripts
This patch adds basic boilerplate support (based on corresponding Perl
sections) for enabling the building and installation Python scripts.

There are currently no Python scripts being built, and when Python
scripts are added in future patches, their building and installation
can be disabled by defining NO_PYTHON.

Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-11-17 21:45:45 -08:00
Ben Walton
5ca5377da0 configure: add settings for gitconfig, editor and pager
Use the new GIT_PARSE_WITH_SET_MAKE_VAR macro to allow configuration
settings for ETC_GITCONFIG, DEFAULT_PAGER and DEFAULT_EDITOR.

Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-11-04 11:29:46 -08:00
Ben Walton
d79d9e1337 configure: add macro to set arbitrary make variables
Add macro GIT_PARSE_WITH_SET_MAKE_VAR to configure.ac to allow --with
style options that set values for variables used during the make
process.

Arguments are the $name part of --with-$name, the name of
the variable to set in the Makefile (config.mak.autogen) and
the help text for the option.

Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-11-04 11:29:46 -08:00
Nicolas Pitre
30ae47b4cc remove ARM and Mozilla SHA1 implementations
They are both slower than the new BLK_SHA1 implementation, so it is
pointless to keep them around.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-08-18 14:19:40 -07:00
Brandon Casey
0ad8ff2cd1 configure.ac: properly unset NEEDS_SSL_WITH_CRYPTO when sha1 func is missing
The empty assignment NEEDS_SSL_WITH_CRYPTO= was mistakenly paired with the
assignment NEEDS_SSL_WITH_CRYPTO=YesPlease in the "action-if-found"
parameter of the AC_CHECK_LIB macro.  The empty assignment was intended for
the "action-if-not-found" section, since in that case, the necessary sha1
hash function was not found and the internal sha1 implementation will be
used instead.

Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-22 21:57:41 -07:00
Brandon Casey
a1142892fd configure.ac: rework/fix the NEEDS_RESOLV and NEEDS_LIBGEN tests
The "action" parameters for these two tests were supplied incorrectly for
the way the tests were implemented.  The tests check whether a program
which calls hstrerror() or basename() successfully links when -lresolv or
-lgen are used, respectively.  A successful linking would result in
NEEDS_RESOLV or NEEDS_LIBGEN being unset, and failure would result in
setting the respective variable.

Aside from that issue, the tests did not handle the case where neither
library was necessary for accessing the functions in question.  So solve
both of these issues by re-working the two tests so that their form is like
the NEEDS_SOCKET test which attempts to link with just the c library, and
if it fails then assumes that the additional library is necessary and sets
the appropriate variable.

Also an entry in the config.mak.in file is necessary for the NEEDS_LIBGEN
variable to appear in the config.mak.autogen file with the value assigned
by the configure script.  Without it, the generated shell script would
contain a snippet like this:

   for ac_lib in ; do
      ...

which is incorrect.

Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-22 21:56:51 -07:00
Brandon Casey
ecc395c112 Makefile: add NEEDS_LIBGEN to optionally add -lgen to compile arguments
Commit 003b33a8 recently added a call to basename().  On IRIX 6.5, this
function resides in libgen and -lgen is required for the linker.

Update configure.ac too.

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-10 23:50:29 -07:00
Junio C Hamano
974e6e42f7 Merge branch 'mn/maint-iconv-autoconf'
* mn/maint-iconv-autoconf:
  fix handling of iconv configuration options
2009-06-20 21:47:22 -07:00
Junio C Hamano
436f66b7e9 Merge branch 'bc/solaris'
* bc/solaris:
  configure: test whether -lresolv is needed
  Makefile: insert SANE_TOOL_PATH to PATH before /bin or /usr/bin
  git-compat-util.h: avoid using c99 flex array feature with Sun compiler 5.8
  Makefile: add section for SunOS 5.7
  Makefile: introduce SANE_TOOL_PATH for prepending required elements to PATH
  Makefile: define __sun__ on SunOS
  git-compat-util.h: tweak the way _XOPEN_SOURCE is set on Solaris
  On Solaris choose the OLD_ICONV iconv() declaration based on the UNIX spec
  Makefile: add NEEDS_RESOLV to optionally add -lresolv to compile arguments
  Makefile: use /usr/ucb/install on SunOS platforms rather than ginstall

Conflicts:
	Makefile
2009-06-13 12:48:34 -07:00
Ralf Wildenhues
8fccb009fa configure: test whether -lresolv is needed
Check if -lresolv is needed for hstrerror; set NEEDS_RESOLV
accordingly, and substitute in config.mak.in.

Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-10 00:08:07 -07:00
Marco Nelissen
934f82a7d4 fix handling of iconv configuration options
Fix the way in which the configure script handles --without-iconv
(and --with-iconv=no), which it  used to essentially ignore.
Also fix the way the configure script determines the value of
NEEDS_LIBICONV, which would be incorrectly set to 'YesPlease' on
systems that lack iconv entirely.

Signed-off-by: Marco Nelissen <marcone@xs4all.nl>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-08 21:18:02 -07:00
David Aguilar
e1c0688692 compat: add a basename() compatibility function
Some systems such as Windows lack libgen.h so provide a
basename() implementation for cross-platform use.

This introduces the NO_LIBGEN_H construct to the Makefile
and autoconf scripts.

Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-31 17:57:59 -07:00
David Aguilar
0620b39b3b compat: add a mkstemps() compatibility function
mkstemps() is a BSD extension so provide an implementation
for cross-platform use.

Signed-off-by: David Aguilar <davvid@gmail.com>
Tested-by: Johannes Sixt <j6t@kdbg.org> (Windows)
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-31 17:56:44 -07:00
Ben Walton
1973b0d790 configure: rework pthread handling to allow for user defined flags
The tests for POSIX threads can now be controlled by the user with the
--enable-pthreads=FLAGS option.  If this is set (to some value other
than yes or no), the value is passed to the compiler.  Thread support
is based solely on the outcome of this test.  The user may specify not
to use threading at all or to use the default tests (first -pthread
then -lpthread) by not specifying FLAGS when passing --enable-pthreads.

Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-12 23:23:39 -07:00
Ben Walton
a8304f7a70 configure: make iconv tests aware of user arguments
--with-iconv is now taken into account when doing the tests for iconv.
If the user requests alternate handling for libiconv, the -liconv test
is run before the -lc test.

Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-12 23:23:39 -07:00
Ben Walton
29adc8baf9 configure: asciidoc version test cleanup
Redirect stderr to /dev/null instead of stdout.  This discards warnings
generated by python 2.6 related to the reorganization of functions within
modules.  The warnings were causing the version detection to break.

Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-12 23:23:39 -07:00
Ben Walton
310386f07b configure: wrap some library tests with GIT_STASH_FLAGS
Libraries that can have user specificed base paths are wrapped with
GIT_STASH_FLAGS/GIT_UNSTASH_FLAGS to ensure that the proper versions
on the system are tested.  This ensures, for example, that the zlib
tests for deflateUnbound are done with the version of zlib requested
by the user.  This is most useful in the absence of good settings for
CPPFLAGS and/or LDFLAGS.

Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-12 23:23:38 -07:00
Ben Walton
918c812017 configure: add macros to stash FLAG variables
Allow for quick stash/unstash of CPPFLAGS and LDFLAGS.  Library tests
can now be easily bracketted with these macros to allow for values
set in user/site arguments.

Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-12 23:23:38 -07:00
Ben Walton
08df6a3086 configure: reorganize flow of argument checks
Move the argument tests from the 'site overrides' so that they are
ahead of any library tests.  This allows for library tests to take
user specified paths into account.  The intent here is to avoid things
like NO_DEFLATE_BOUND being set due to finding old zlib when the user
has specified an alternate location for zlib.  (Ignore the fact that
properly set *FLAGS can avoid solve this issue.)

Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-12 23:23:38 -07:00
Ben Walton
e068f4f53b configure: ensure settings from user are also usable in the script
Allow things set by the user (--with-lib, --with-iconv, etc) to set
variables for use by other parts of the script.  Display values as
they're set.

Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-12 23:23:38 -07:00
Ralf Wildenhues
a1a587ef72 Fix naming scheme for configure cache variables.
In order to be cached, configure variables need to contain the
string '_cv_', and they should begin with a package-specific
prefix in order to avoid interfering with third-party macros.
Rename ld_dashr, ld_wl_rpath, ld_rpath to git_cv_ld_dashr etc.

Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-21 00:12:25 -08:00
Junio C Hamano
8b75d31c94 Merge branch 'ds/uintmax-config'
* ds/uintmax-config:
  autoconf: Enable threaded delta search when pthreads are supported
2009-01-17 23:08:53 -08:00
Paul Jarc
50a4b35245 configure clobbers LDFLAGS
In a couple of tests, configure clobbers the LDFLAGS value set by the
caller.  This patch fixes it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-05 19:46:19 -08:00
David M. Syzdek
d937c374cc autoconf: Enable threaded delta search when pthreads are supported
Automatically set THREADED_DELTA_SEARCH when autoconf test detects
support for pthreads on the platform.  This will change the default for
some platforms that did not enable threaded delta search previously.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-02 22:48:58 -08:00
Junio C Hamano
46059cc632 Makefile: introduce NO_PTHREADS
This introduces make variable NO_PTHREADS for platforms that lack the
support for pthreads library or people who do not want to use it for
whatever reason.  When defined, it makes the multi-threaded index
preloading into a no-op, and also disables threaded delta searching by
pack-objects.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Mike Ralphson <mike@abacus.co.uk>
Tested-by: Johannes Sixt <j6t@kdbg.org> (AIX 4.3.x)
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-02 15:29:12 -08:00
Junio C Hamano
3e9f158c80 Merge branch 'ds/uintmax-config' (early part)
* 'ds/uintmax-config' (early part):
  Add autoconf tests for pthreads
  Make Pthread link flags configurable
  Add Makefile check for FreeBSD 4.9-SECURITY
  Build: add NO_UINTMAX_T to support ancient systems

Conflicts:
	Makefile
2008-11-12 22:27:33 -08:00
David M. Syzdek
20f7a39825 Add autoconf tests for pthreads
Set the value of PTHREAD_LIBS to the correct flags for linking pthreads on
the current environment.

Signed-off-by: David M. Syzdek <david.syzdek@acsalaska.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-09 11:26:54 -08:00
David M. Syzdek
1689c5de87 autoconf: Add link tests to each AC_CHECK_FUNC() test
Update configure.ac to test libraries for getaddrinfo, strcasestr, memmem,
strlcpy, strtoumax, setenv, unsetenv, and mkdtemp.  The default compilers
on FreeBSD 4.9-SECURITY and FreeBSD 6.2-RELEASE-p4 do not generate warnings
for missing prototypes unless `-Wall' is used. This behavior renders the
results of AC_CHECK_FUNC() void on these platforms. The test AC_SEARCH_LIBS()
verifies a function is valid by linking to symbol within the system libraries.

Since this pattern needs to be repeated for many functions that are
checked with AC_CHECK_FUNC(), we add GIT_CHECK_FUNC() to drive the two
autoconf macros together.

Signed-off-by: David M. Syzdek <david.syzdek@acsalaska.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-02 15:39:54 -08:00
David M. Syzdek
0bc3e781de Build: add NO_UINTMAX_T to support ancient systems
This adds NO_UINTMAX_T for ancient systems, such as FreeBSD 4.9-SECURITY.
If NO_UINTMAX_T is defined, then uintmax_t is defined as uint32_t.

Signed-off-by: David M. Syzdek <david.syzdek@acsalaska.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-02 01:09:34 -07:00
Giovanni Funchal
798a945002 configure: auto detect dynamic library path switches
Most systems (e.g. Linux gcc) use "-Wl,-rpath," to pass to the linker the
runtime dynamic library paths. Some other systems (e.g. Sun, some BSD) use
"-R" etc. This patch adds tests in configure for the three most common
switches (to my best knowledge) which should cover all current platforms
where Git is used.

Signed-Off-By: Giovanni Funchal <gafunchal@gmail.com>

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-08-17 17:42:02 -07:00
Johan Herland
8da1e21231 Consistency: Use "libcurl" instead of "cURL library" and "curl"
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-06-15 13:35:10 -07:00
Michal Rokos
8ce1f243e5 autoconf: Test FREAD_READS_DIRECTORIES
Add test for FREAD_READS_DIRECTORIES to detect when fread() reads fopen'ed
directory.

Tested on these platforms:

  AIX 5.3 - FREAD_READS_DIRECTORIES=UnfortunatelyYes
  HP-UX B.11.11 - FREAD_READS_DIRECTORIES=UnfortunatelyYes
  HP-UX B.11.23 - FREAD_READS_DIRECTORIES=UnfortunatelyYes
  Linux 2.6.25-rc4 - FREAD_READS_DIRECTORIES=
  Tru64 V5.1 - FREAD_READS_DIRECTORIES=UnfortunatelyYes
  Windows - FREAD_READS_DIRECTORIES=

Signed-off-by: Michal Rokos <michal.rokos@nextsoft.cz>
Tested-by: Mike Ralphson <mike@abacus.co.uk>
Tested-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-03-11 02:10:43 -07:00
Michal Rokos
c4582f93a2 Add compat/snprintf.c for systems that return bogus
Some systems (namely HPUX and Windows) return -1 when maxsize in snprintf()
and in vsnprintf() is reached. So replace snprintf() and vsnprintf()
functions with our own ones that return correct value upon overflow.

[jc: verified that review comments by J6t have been incorporated, and
 tightened the check to verify the resulting buffer contents, suggested
 by Wayne Davison]

Signed-off-by: Michal Rokos <michal.rokos@nextsoft.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-03-05 13:12:07 -08:00
Jakub Narebski
3cf3237400 autoconf: define NO_SYS_SELECT_H on systems without <sys/select.h>.
Pre-POSIX.1-2001 systems don't have <sys/select.h>, but select(2)
is declared in <sys/time.h>, which git-compat-util.h includes.

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-25 22:26:08 -08:00
Jakub Narebski
bfa8fccf47 autoconf: Add checking for unsetenv function
Update configure.ac (and config.mak.in) by adding test for unsetenv
(NO_UNSETENV).  Add comment about NO_UNSETENV to Makefile header, as
original commit 731043fd adding compat/unsetenv.c didn't do that.

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-17 23:35:36 -08:00
Jakub Narebski
923db42eea autoconf: Check asciidoc version to automatically set ASCIIDOC8
Check for asciidoc, and if it exists check asciidoc version, setting
ASCIIDOC8 when needed.  Currently it just runs asciidoc in asciidoc7
compatibility mode (see: Documentation/Makefile).

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-11 00:38:38 -08:00
Jakub Narebski
0f7a9c9b7b autoconf: Add test for OLD_ICONV (squelching compiler warning)
Update configure.ac (and config.mak.in) to keep up with git
development by adding [compile] test whether your library has an old
iconv(), where the second (input buffer pointer) parameter is declared
with type (const char **) (OLD_ICONV).

Test-proposed-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-06 23:23:42 -08:00
Junio C Hamano
65c6a4696a Merge branch 'maint'
* maint:
  Replace the word 'update-cache' by 'update-index' everywhere
  cvsimport: fix usage of cvsimport.module
  t7003-filter-branch: Fix test of a failing --msg-filter.
  cvsimport: miscellaneous packed-ref fixes
  cvsimport: use rev-parse to support packed refs
  Add basic cvsimport tests
2007-11-30 16:21:33 -08:00
Johannes Schindelin
10455d2a95 Replace the word 'update-cache' by 'update-index' everywhere
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-30 15:09:40 -08:00
Jakub Narebski
2439755630 autoconf: Add tests for memmem, strtoumax and mkdtemp functions
Update configure.ac (and config.mak.in) to keep up with git
development by adding tests for memmem (NO_MEMMEM), strtoumax
(NO_STRTOUMAX) and mkdtemp (NO_MKDTEMP) functions.

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-20 13:16:15 -08:00
Junio C Hamano
0380074315 Merge branch 'ds/maint-deflatebound'
* ds/maint-deflatebound:
  Improve accuracy of check for presence of deflateBound.
2007-11-07 18:17:20 -08:00
Ralf Wildenhues
3c307bfbe8 Fix minor nits in configure.ac
Avoid "test -o" as it is only XSI not POSIX, and not portable.
Avoid exit(3) in test programs in favor of return, to accommodate
for newer Autoconf not providing a declaration for exit.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-07 17:21:41 -08:00