[thirdparty/git.git] / configure.ac

#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

AC_PREREQ(2.59)
AC_INIT([git], [1.4.1], [git@vger.kernel.org])

AC_CONFIG_SRCDIR([git.c])

config_file=config.mak.autogen
config_append=config.mak.append
config_in=config.mak.in

echo "# ${config_append}.  Generated by configure." > "${config_append}"


## Definitions of macros
# GIT_CONF_APPEND_LINE(LINE)
# --------------------------
# Append LINE to file ${config_append}
AC_DEFUN([GIT_CONF_APPEND_LINE],
[echo "$1" >> "${config_append}"])# GIT_CONF_APPEND_LINE
#
# GIT_ARG_SET_PATH(PROGRAM)
# -------------------------
# Provide --with-PROGRAM=PATH option to set PATH to PROGRAM
AC_DEFUN([GIT_ARG_SET_PATH],
[AC_ARG_WITH([$1],
 [AS_HELP_STRING([--with-$1=PATH],
                 [provide PATH to $1])],
 [GIT_CONF_APPEND_PATH($1)],[])
])# GIT_ARG_SET_PATH
#
# GIT_CONF_APPEND_PATH(PROGRAM)
# ------------------------------
# Parse --with-PROGRAM=PATH option to set PROGRAM_PATH=PATH
# Used by GIT_ARG_SET_PATH(PROGRAM)
AC_DEFUN([GIT_CONF_APPEND_PATH],
[PROGRAM=m4_toupper($1); \
if test "$withval" = "no"; then \
	AC_MSG_WARN([You cannot use git without $1]); \
else \
	if test "$withval" = "yes"; then \
		AC_MSG_WARN([You should provide path for --with-$1=PATH]); \
	else \
		GIT_CONF_APPEND_LINE(${PROGRAM}_PATH=$withval); \
	fi; \
fi; \
]) # GIT_CONF_APPEND_PATH


## Site configuration
## --with-PACKAGE[=ARG] and --without-PACKAGE
#
# Define NO_SVN_TESTS if you want to skip time-consuming SVN interopability
# tests.  These tests take up a significant amount of the total test time
# but are not needed unless you plan to talk to SVN repos.
#
# Define MOZILLA_SHA1 environment variable when running make to make use of
# a bundled SHA1 routine coming from Mozilla. It is GPL'd and should be fast
# on non-x86 architectures (e.g. PowerPC), while the OpenSSL version (default
# choice) has very fast version optimized for i586.
#
# Define PPC_SHA1 environment variable when running make to make use of
# a bundled SHA1 routine optimized for PowerPC.
#
# Define ARM_SHA1 environment variable when running make to make use of
# a bundled SHA1 routine optimized for ARM.
#
# Define NO_OPENSSL environment variable if you do not have OpenSSL.
# This also implies MOZILLA_SHA1.
#
# Define NO_CURL if you do not have curl installed.  git-http-pull and
# git-http-push are not built, and you cannot use http:// and https://
# transports.
#
# Define CURLDIR=/foo/bar if your curl header and library files are in
# /foo/bar/include and /foo/bar/lib directories.
#
# Define NO_EXPAT if you do not have expat installed.  git-http-push is
# not built, and you cannot push using http:// and https:// transports.
#
# Define NO_MMAP if you want to avoid mmap.
#
# Define NO_PYTHON if you want to loose all benefits of the recursive merge.
#
## --enable-FEATURE[=ARG] and --disable-FEATURE
# Define COLLISION_CHECK below if you believe that SHA1's
# 1461501637330902918203684832716283019655932542976 hashes do not give you
# sufficient guarantee that no collisions between objects will ever happen.
#
# Define USE_NSEC below if you want git to care about sub-second file mtimes
# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
# randomly break unless your underlying filesystem supports those sub-second
# times (my ext3 doesn't).
#
# Define USE_STDEV below if you want git to care about the underlying device
# change being considered an inode change from the update-cache perspective.


## Checks for programs.
AC_MSG_NOTICE([CHECKS for programs])
#
GIT_ARG_SET_PATH(shell)
GIT_ARG_SET_PATH(perl)
AC_ARG_WITH(python,[AS_HELP_STRING([--with-python=PATH], [provide PATH to python])
AS_HELP_STRING([--no-python], [don't use python scripts])],
 [if test "$withval" = "no"; then \
    NO_PYTHON=YesPlease; \
  elif test "$withval" != "yes"; then \
    PYTHON_PATH=$withval; \
  fi; \
 ])
AC_SUBST(NO_PYTHON)
AC_SUBST(PYTHON_PATH)


#
# Define NO_PYTHON if you want to lose all benefits of the recursive merge.
# Define PYTHON_PATH to provide path to Python.
AC_PROG_CC
#AC_PROG_INSTALL		# needs install-sh or install.sh in sources
AC_CHECK_TOOL(AR, ar, :)
AC_CHECK_PROGS(TAR, [gtar tar])
if test -z "$NO_PYTHON"; then
	AC_PATH_PROGS(PYTHON_PATH, [python2.4 python2.3 python2 python])
	if test -n "$PYTHON_PATH"; then
		GIT_CONF_APPEND_LINE([PYTHON_PATH=@PYTHON_PATH@])
	else
		GIT_CONF_APPEND_LINE([NO_PYTHON=@NO_PYTHON@])
	fi
else
	GIT_CONF_APPEND_LINE([NO_PYTHON=@NO_PYTHON@])
fi


## Checks for libraries.
AC_MSG_NOTICE([CHECKS for libraries])
#
# Define NO_OPENSSL environment variable if you do not have OpenSSL.
# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
AC_CHECK_LIB([ssl], [SHA1_Init],[],
[AC_CHECK_LIB([crypto], [SHA1_INIT],
 [GIT_CONF_APPEND_LINE(NEEDS_SSL_WITH_CRYPTO=YesPlease)],
 [GIT_CONF_APPEND_LINE(NO_OPENSSL=YesPlease)])])
#
# Define NO_CURL if you do not have curl installed.  git-http-pull and
# git-http-push are not built, and you cannot use http:// and https://
# transports.
AC_CHECK_LIB([curl], [curl_global_init],[],
[GIT_CONF_APPEND_LINE(NO_CURL=YesPlease)])
#
# Define NO_EXPAT if you do not have expat installed.  git-http-push is
# not built, and you cannot push using http:// and https:// transports.
AC_CHECK_LIB([expat], [XML_ParserCreate],[],
[GIT_CONF_APPEND_LINE(NO_EXPAT=YesPlease)])
#
# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin).
AC_CHECK_LIB([c], [iconv],[],
[AC_CHECK_LIB([iconv],[iconv],
 [GIT_CONF_APPEND_LINE(NEEDS_LIBICONV=YesPlease)],[])])
#
# Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
# Patrick Mauritz).
AC_CHECK_LIB([c], [socket],[],
[AC_CHECK_LIB([socket],[socket],
 [GIT_CONF_APPEND_LINE(NEEDS_SOCKET=YesPlease)],[])])


## Checks for header files.


## Checks for typedefs, structures, and compiler characteristics.
AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
#
# Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
AC_CHECK_MEMBER(struct dirent.d_ino,[],
[GIT_CONF_APPEND_LINE(NO_D_INO_IN_DIRENT=YesPlease)],
[#include <dirent.h>])
#
# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
# d_type in struct dirent (latest Cygwin -- will be fixed soonish).
AC_CHECK_MEMBER(struct dirent.d_type,[],
[GIT_CONF_APPEND_LINE(NO_D_TYPE_IN_DIRENT=YesPlease)],
[#include <dirent.h>])
#
# Define NO_SOCKADDR_STORAGE if your platform does not have struct
# sockaddr_storage.
AC_CHECK_TYPE(struct sockaddr_storage,[],
[GIT_CONF_APPEND_LINE(NO_SOCKADDR_STORAGE=YesPlease)],
[#include <netinet/in.h>])
#
# Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.)
# do not support the 'size specifiers' introduced by C99, namely ll, hh,
# j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t).
# some C compilers supported these specifiers prior to C99 as an extension.
AC_CACHE_CHECK(whether IO functions support %ll %hh %j %z %t size specifiers,
 ac_cv_c_c99_format,
[# Actually git uses only %z (%zu) in alloc.c, and %t (%td) in mktag.c
AC_RUN_IFELSE(
	[AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
		[[char buf[64];
		if (sprintf(buf, "%lld%hhd%jd%zd%td", (long long int)1, (char)2, (intmax_t)3, (size_t)4, (ptrdiff_t)5) != 5)
		  exit(1);
		else if (strcmp(buf, "12345"))
		  exit(2);]])],
	[ac_cv_c_c99_format=yes],
	[ac_cv_c_c99_format=no])
])
if test $ac_cv_c_c99_format = no; then
	GIT_CONF_APPEND_LINE(NO_C99_FORMAT=YesPlease)
fi


## Checks for library functions.
## (in default C library and libraries checked by AC_CHECK_LIB)
AC_MSG_NOTICE([CHECKS for library functions])
#
# Define NO_STRCASESTR if you don't have strcasestr.
AC_CHECK_FUNC(strcasestr,[],
[GIT_CONF_APPEND_LINE(NO_STRCASESTR=YesPlease)])
#
# Define NO_STRLCPY if you don't have strlcpy.
AC_CHECK_FUNC(strlcpy,[],
[GIT_CONF_APPEND_LINE(NO_STRLCPY=YesPlease)])
#
# Define NO_SETENV if you don't have setenv in the C library.
AC_CHECK_FUNC(setenv,[],
[GIT_CONF_APPEND_LINE(NO_SETENV=YesPlease)])
#
# Define NO_MMAP if you want to avoid mmap.
#
# Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
#
# Define NO_ICONV if your libc does not properly support iconv.


## Other checks.
# Define USE_PIC if you need the main git objects to be built with -fPIC
# in order to build and link perl/Git.so.  x86-64 seems to need this.
#
# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
# Enable it on Windows.  By default, symrefs are still used.
#
# Define WITH_OWN_SUBPROCESS_PY if you want to use with python 2.3.
#
# Define NO_ACCURATE_DIFF if your diff program at least sometimes misses
# a missing newline at the end of the file.


## Output files
AC_CONFIG_FILES(["${config_file}":"${config_in}":"${config_append}"])
AC_OUTPUT


## Cleanup
rm -f "${config_append}"
Commit	Line	Data
55667714 JN	1	# -- Autoconf --
	2	# Process this file with autoconf to produce a configure script.
	3
	4	AC_PREREQ(2.59)
	5	AC_INIT([git], [1.4.1], [git@vger.kernel.org])
	6
	7	AC_CONFIG_SRCDIR([git.c])
	8
	9	config_file=config.mak.autogen
d3a6db98	10	config_append=config.mak.append
55667714 JN	11	config_in=config.mak.in
55667714 JN	12
d3a6db98 JN	13	echo "# ${config_append}. Generated by configure." > "${config_append}"
	14
	15
	16	## Definitions of macros
	17	# GIT_CONF_APPEND_LINE(LINE)
	18	# --------------------------
	19	# Append LINE to file ${config_append}
	20	AC_DEFUN([GIT_CONF_APPEND_LINE],
	21	[echo "$1" >> "${config_append}"])# GIT_CONF_APPEND_LINE
657b062d JN	22	#
	23	# GIT_ARG_SET_PATH(PROGRAM)
	24	# -------------------------
	25	# Provide --with-PROGRAM=PATH option to set PATH to PROGRAM
	26	AC_DEFUN([GIT_ARG_SET_PATH],
	27	[AC_ARG_WITH([$1],
	28	[AS_HELP_STRING([--with-$1=PATH],
	29	[provide PATH to $1])],
	30	[GIT_CONF_APPEND_PATH($1)],[])
	31	])# GIT_ARG_SET_PATH
	32	#
	33	# GIT_CONF_APPEND_PATH(PROGRAM)
	34	# ------------------------------
	35	# Parse --with-PROGRAM=PATH option to set PROGRAM_PATH=PATH
	36	# Used by GIT_ARG_SET_PATH(PROGRAM)
	37	AC_DEFUN([GIT_CONF_APPEND_PATH],
	38	[PROGRAM=m4_toupper($1); \
	39	if test "$withval" = "no"; then \
	40	AC_MSG_WARN([You cannot use git without $1]); \
	41	else \
	42	if test "$withval" = "yes"; then \
	43	AC_MSG_WARN([You should provide path for --with-$1=PATH]); \
	44	else \
	45	GIT_CONF_APPEND_LINE(${PROGRAM}_PATH=$withval); \
	46	fi; \
	47	fi; \
	48	]) # GIT_CONF_APPEND_PATH
d3a6db98	49
633b4239	50
c4b1b140 JN	51	## Site configuration
	52	## --with-PACKAGE[=ARG] and --without-PACKAGE
	53	#
	54	# Define NO_SVN_TESTS if you want to skip time-consuming SVN interopability
	55	# tests. These tests take up a significant amount of the total test time
	56	# but are not needed unless you plan to talk to SVN repos.
	57	#
	58	# Define MOZILLA_SHA1 environment variable when running make to make use of
	59	# a bundled SHA1 routine coming from Mozilla. It is GPL'd and should be fast
	60	# on non-x86 architectures (e.g. PowerPC), while the OpenSSL version (default
	61	# choice) has very fast version optimized for i586.
	62	#
	63	# Define PPC_SHA1 environment variable when running make to make use of
	64	# a bundled SHA1 routine optimized for PowerPC.
	65	#
	66	# Define ARM_SHA1 environment variable when running make to make use of
	67	# a bundled SHA1 routine optimized for ARM.
	68	#
	69	# Define NO_OPENSSL environment variable if you do not have OpenSSL.
	70	# This also implies MOZILLA_SHA1.
	71	#
	72	# Define NO_CURL if you do not have curl installed. git-http-pull and
	73	# git-http-push are not built, and you cannot use http:// and https://
	74	# transports.
	75	#
	76	# Define CURLDIR=/foo/bar if your curl header and library files are in
	77	# /foo/bar/include and /foo/bar/lib directories.
	78	#
	79	# Define NO_EXPAT if you do not have expat installed. git-http-push is
	80	# not built, and you cannot push using http:// and https:// transports.
	81	#
	82	# Define NO_MMAP if you want to avoid mmap.
	83	#
	84	# Define NO_PYTHON if you want to loose all benefits of the recursive merge.
	85	#
	86	## --enable-FEATURE[=ARG] and --disable-FEATURE
	87	# Define COLLISION_CHECK below if you believe that SHA1's
	88	# 1461501637330902918203684832716283019655932542976 hashes do not give you
	89	# sufficient guarantee that no collisions between objects will ever happen.
	90	#
	91	# Define USE_NSEC below if you want git to care about sub-second file mtimes
	92	# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
	93	# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
	94	# randomly break unless your underlying filesystem supports those sub-second
	95	# times (my ext3 doesn't).
	96	#
	97	# Define USE_STDEV below if you want git to care about the underlying device
	98	# change being considered an inode change from the update-cache perspective.
	99
	100
633b4239	101	## Checks for programs.
fd22c027	102	AC_MSG_NOTICE([CHECKS for programs])
f6719572	103	#
657b062d JN	104	GIT_ARG_SET_PATH(shell)
657b062d JN	105	GIT_ARG_SET_PATH(perl)
eb858c56 JN	106	AC_ARG_WITH(python,[AS_HELP_STRING([--with-python=PATH], [provide PATH to python])
	107	AS_HELP_STRING([--no-python], [don't use python scripts])],
	108	[if test "$withval" = "no"; then \
	109	NO_PYTHON=YesPlease; \
	110	elif test "$withval" != "yes"; then \
	111	PYTHON_PATH=$withval; \
	112	fi; \
	113	])
	114	AC_SUBST(NO_PYTHON)
	115	AC_SUBST(PYTHON_PATH)
	116
	117
657b062d JN	118	#
	119	# Define NO_PYTHON if you want to lose all benefits of the recursive merge.
	120	# Define PYTHON_PATH to provide path to Python.
fd22c027 JN	121	AC_PROG_CC
	122	#AC_PROG_INSTALL # needs install-sh or install.sh in sources
	123	AC_CHECK_TOOL(AR, ar, :)
	124	AC_CHECK_PROGS(TAR, [gtar tar])
eb858c56 JN	125	if test -z "$NO_PYTHON"; then
	126	AC_PATH_PROGS(PYTHON_PATH, [python2.4 python2.3 python2 python])
	127	if test -n "$PYTHON_PATH"; then
	128	GIT_CONF_APPEND_LINE([PYTHON_PATH=@PYTHON_PATH@])
	129	else
	130	GIT_CONF_APPEND_LINE([NO_PYTHON=@NO_PYTHON@])
	131	fi
	132	else
	133	GIT_CONF_APPEND_LINE([NO_PYTHON=@NO_PYTHON@])
	134	fi
633b4239 JN	135
	136
	137	## Checks for libraries.
ebdf5321	138	AC_MSG_NOTICE([CHECKS for libraries])
f6719572	139	#
633b4239	140	# Define NO_OPENSSL environment variable if you do not have OpenSSL.
ebdf5321 JN	141	# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
	142	AC_CHECK_LIB([ssl], [SHA1_Init],[],
	143	[AC_CHECK_LIB([crypto], [SHA1_INIT],
66142aa1 PR	144	[GIT_CONF_APPEND_LINE(NEEDS_SSL_WITH_CRYPTO=YesPlease)],
66142aa1 PR	145	[GIT_CONF_APPEND_LINE(NO_OPENSSL=YesPlease)])])
f6719572	146	#
633b4239 JN	147	# Define NO_CURL if you do not have curl installed. git-http-pull and
	148	# git-http-push are not built, and you cannot use http:// and https://
	149	# transports.
ebdf5321	150	AC_CHECK_LIB([curl], [curl_global_init],[],
66142aa1	151	[GIT_CONF_APPEND_LINE(NO_CURL=YesPlease)])
f6719572	152	#
633b4239 JN	153	# Define NO_EXPAT if you do not have expat installed. git-http-push is
633b4239 JN	154	# not built, and you cannot push using http:// and https:// transports.
ebdf5321	155	AC_CHECK_LIB([expat], [XML_ParserCreate],[],
66142aa1	156	[GIT_CONF_APPEND_LINE(NO_EXPAT=YesPlease)])
f6719572	157	#
633b4239	158	# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin).
ebdf5321 JN	159	AC_CHECK_LIB([c], [iconv],[],
ebdf5321 JN	160	[AC_CHECK_LIB([iconv],[iconv],
66142aa1	161	[GIT_CONF_APPEND_LINE(NEEDS_LIBICONV=YesPlease)],[])])
f6719572	162	#
633b4239 JN	163	# Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
633b4239 JN	164	# Patrick Mauritz).
ebdf5321 JN	165	AC_CHECK_LIB([c], [socket],[],
ebdf5321 JN	166	[AC_CHECK_LIB([socket],[socket],
66142aa1	167	[GIT_CONF_APPEND_LINE(NEEDS_SOCKET=YesPlease)],[])])
633b4239 JN	168
	169
	170	## Checks for header files.
	171
	172
	173	## Checks for typedefs, structures, and compiler characteristics.
eb0f255d	174	AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
f6719572	175	#
633b4239	176	# Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
eb0f255d	177	AC_CHECK_MEMBER(struct dirent.d_ino,[],
66142aa1	178	[GIT_CONF_APPEND_LINE(NO_D_INO_IN_DIRENT=YesPlease)],
eb0f255d	179	[#include <dirent.h>])
f6719572	180	#
633b4239 JN	181	# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
633b4239 JN	182	# d_type in struct dirent (latest Cygwin -- will be fixed soonish).
eb0f255d	183	AC_CHECK_MEMBER(struct dirent.d_type,[],
66142aa1	184	[GIT_CONF_APPEND_LINE(NO_D_TYPE_IN_DIRENT=YesPlease)],
eb0f255d	185	[#include <dirent.h>])
f6719572	186	#
633b4239 JN	187	# Define NO_SOCKADDR_STORAGE if your platform does not have struct
633b4239 JN	188	# sockaddr_storage.
eb0f255d	189	AC_CHECK_TYPE(struct sockaddr_storage,[],
66142aa1	190	[GIT_CONF_APPEND_LINE(NO_SOCKADDR_STORAGE=YesPlease)],
eb0f255d	191	[#include <netinet/in.h>])
656517b9 JN	192	#
	193	# Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.)
	194	# do not support the 'size specifiers' introduced by C99, namely ll, hh,
	195	# j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t).
	196	# some C compilers supported these specifiers prior to C99 as an extension.
	197	AC_CACHE_CHECK(whether IO functions support %ll %hh %j %z %t size specifiers,
	198	ac_cv_c_c99_format,
	199	[# Actually git uses only %z (%zu) in alloc.c, and %t (%td) in mktag.c
	200	AC_RUN_IFELSE(
	201	[AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
	202	[[char buf[64];
	203	if (sprintf(buf, "%lld%hhd%jd%zd%td", (long long int)1, (char)2, (intmax_t)3, (size_t)4, (ptrdiff_t)5) != 5)
	204	exit(1);
	205	else if (strcmp(buf, "12345"))
	206	exit(2);]])],
	207	[ac_cv_c_c99_format=yes],
	208	[ac_cv_c_c99_format=no])
	209	])
	210	if test $ac_cv_c_c99_format = no; then
	211	GIT_CONF_APPEND_LINE(NO_C99_FORMAT=YesPlease)
	212	fi
633b4239 JN	213
	214
	215	## Checks for library functions.
1bbbadbc JN	216	## (in default C library and libraries checked by AC_CHECK_LIB)
1bbbadbc JN	217	AC_MSG_NOTICE([CHECKS for library functions])
f6719572	218	#
633b4239	219	# Define NO_STRCASESTR if you don't have strcasestr.
1bbbadbc	220	AC_CHECK_FUNC(strcasestr,[],
66142aa1	221	[GIT_CONF_APPEND_LINE(NO_STRCASESTR=YesPlease)])
f6719572	222	#
633b4239	223	# Define NO_STRLCPY if you don't have strlcpy.
1bbbadbc	224	AC_CHECK_FUNC(strlcpy,[],
66142aa1	225	[GIT_CONF_APPEND_LINE(NO_STRLCPY=YesPlease)])
f6719572	226	#
633b4239	227	# Define NO_SETENV if you don't have setenv in the C library.
1bbbadbc	228	AC_CHECK_FUNC(setenv,[],
66142aa1	229	[GIT_CONF_APPEND_LINE(NO_SETENV=YesPlease)])
f6719572	230	#
633b4239 JN	231	# Define NO_MMAP if you want to avoid mmap.
	232	#
	233	# Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
	234	#
	235	# Define NO_ICONV if your libc does not properly support iconv.
	236
	237
	238	## Other checks.
	239	# Define USE_PIC if you need the main git objects to be built with -fPIC
	240	# in order to build and link perl/Git.so. x86-64 seems to need this.
	241	#
	242	# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
	243	# Enable it on Windows. By default, symrefs are still used.
	244	#
	245	# Define WITH_OWN_SUBPROCESS_PY if you want to use with python 2.3.
	246	#
	247	# Define NO_ACCURATE_DIFF if your diff program at least sometimes misses
	248	# a missing newline at the end of the file.
	249
	250
633b4239	251	## Output files
d3a6db98	252	AC_CONFIG_FILES(["${config_file}":"${config_in}":"${config_append}"])
55667714	253	AC_OUTPUT
d3a6db98	254
f6719572	255
d3a6db98 JN	256	## Cleanup
d3a6db98 JN	257	rm -f "${config_append}"