#                                               -*- 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 interoperability
# 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 SHELL_PATH to provide path to shell.
GIT_ARG_SET_PATH(shell)
#
# Define PERL_PATH to provide path to Perl.
GIT_ARG_SET_PATH(perl)
#
# Define NO_PYTHON if you want to lose all benefits of the recursive merge.
# Define PYTHON_PATH to provide path to Python.
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)
#
## --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])
#
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])
#
# Define NO_PYTHON if you want to lose all benefits of the recursive merge.
# Define PYTHON_PATH to provide path to Python.
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 formatted IO functions support C99 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}"