450bbe7f1020711b4af2ad6ea52d717651c30b0b
   1#                                               -*- Autoconf -*-
   2# Process this file with autoconf to produce a configure script.
   3
   4## Definitions of private macros.
   5
   6# GIT_CONF_SUBST(VAL, VAR)
   7# ------------------------
   8# Cause the line "VAR=VAL" to be eventually appended to ${config_file}.
   9AC_DEFUN([GIT_CONF_SUBST],
  10[AC_REQUIRE([GIT_CONF_SUBST_INIT])
  11config_appended_defs="$config_appended_defs${newline}dnl
  12$1=m4_if([$#],[1],[${$1}],[$2])"])
  13
  14# GIT_CONF_SUBST_INIT
  15# -------------------
  16# Prepare shell variables and autoconf machine required by later calls
  17# to GIT_CONF_SUBST.
  18AC_DEFUN([GIT_CONF_SUBST_INIT],
  19    [config_appended_defs=; newline='
  20'
  21    AC_CONFIG_COMMANDS([$config_file],
  22                       [echo "$config_appended_defs" >> "$config_file"],
  23                       [config_file=$config_file
  24                        config_appended_defs="$config_appended_defs"])])
  25
  26# GIT_ARG_SET_PATH(PROGRAM)
  27# -------------------------
  28# Provide --with-PROGRAM=PATH option to set PATH to PROGRAM
  29# Optional second argument allows setting NO_PROGRAM=YesPlease if
  30# --without-PROGRAM version used.
  31AC_DEFUN([GIT_ARG_SET_PATH],
  32    [AC_ARG_WITH([$1],
  33        [AS_HELP_STRING([--with-$1=PATH],
  34                        [provide PATH to $1])],
  35        [GIT_CONF_APPEND_PATH([$1], [$2])],
  36        [])])
  37
  38# GIT_CONF_APPEND_PATH(PROGRAM)
  39# -----------------------------
  40# Parse --with-PROGRAM=PATH option to set PROGRAM_PATH=PATH
  41# Used by GIT_ARG_SET_PATH(PROGRAM)
  42# Optional second argument allows setting NO_PROGRAM=YesPlease if
  43# --without-PROGRAM is used.
  44AC_DEFUN([GIT_CONF_APPEND_PATH],
  45    [m4_pushdef([GIT_UC_PROGRAM], m4_toupper([$1]))dnl
  46    if test "$withval" = "no"; then
  47        if test -n "$2"; then
  48                GIT_UC_PROGRAM[]_PATH=$withval
  49                AC_MSG_NOTICE([Disabling use of GIT_UC_PROGRAM])
  50                GIT_CONF_SUBST([NO_]GIT_UC_PROGRAM, [YesPlease])
  51                GIT_CONF_SUBST(GIT_UC_PROGRAM[]_PATH, [])
  52        else
  53                AC_MSG_ERROR([You cannot use git without $1])
  54        fi
  55    else
  56        if test "$withval" = "yes"; then
  57                AC_MSG_WARN([You should provide path for --with-$1=PATH])
  58        else
  59                GIT_UC_PROGRAM[]_PATH=$withval
  60                AC_MSG_NOTICE([Setting GIT_UC_PROGRAM[]_PATH to $withval])
  61                GIT_CONF_SUBST(GIT_UC_PROGRAM[]_PATH, [$withval])
  62        fi
  63    fi
  64    m4_popdef([GIT_UC_PROGRAM])])
  65
  66# GIT_PARSE_WITH(PACKAGE)
  67# -----------------------
  68# For use in AC_ARG_WITH action-if-found, for packages default ON.
  69# * Set NO_PACKAGE=YesPlease for --without-PACKAGE
  70# * Set PACKAGEDIR=PATH for --with-PACKAGE=PATH
  71# * Unset NO_PACKAGE for --with-PACKAGE without ARG
  72AC_DEFUN([GIT_PARSE_WITH],
  73    [m4_pushdef([GIT_UC_PACKAGE], m4_toupper([$1]))dnl
  74    if test "$withval" = "no"; then
  75        NO_[]GIT_UC_PACKAGE=YesPlease
  76    elif test "$withval" = "yes"; then
  77        NO_[]GIT_UC_PACKAGE=
  78    else
  79        NO_[]GIT_UC_PACKAGE=
  80        GIT_UC_PACKAGE[]DIR=$withval
  81        AC_MSG_NOTICE([Setting GIT_UC_PACKAGE[]DIR to $withval])
  82        GIT_CONF_SUBST(GIT_UC_PACKAGE[DIR], [$withval])
  83    fi
  84    m4_popdef([GIT_UC_PACKAGE])])
  85
  86# GIT_PARSE_WITH_SET_MAKE_VAR(WITHNAME, VAR, HELP_TEXT)
  87# -----------------------------------------------------
  88# Set VAR to the value specied by --with-WITHNAME.
  89# No verification of arguments is performed, but warnings are issued
  90# if either 'yes' or 'no' is specified.
  91# HELP_TEXT is presented when --help is called.
  92# This is a direct way to allow setting variables in the Makefile.
  93AC_DEFUN([GIT_PARSE_WITH_SET_MAKE_VAR],
  94[AC_ARG_WITH([$1],
  95 [AS_HELP_STRING([--with-$1=VALUE], $3)],
  96 if test -n "$withval"; then
  97  if test "$withval" = "yes" -o "$withval" = "no"; then
  98    AC_MSG_WARN([You likely do not want either 'yes' or 'no' as]
  99                     [a value for $1 ($2).  Maybe you do...?])
 100  fi
 101  AC_MSG_NOTICE([Setting $2 to $withval])
 102  GIT_CONF_SUBST([$2], [$withval])
 103 fi)])# GIT_PARSE_WITH_SET_MAKE_VAR
 104
 105#
 106# GIT_CHECK_FUNC(FUNCTION, IFTRUE, IFFALSE)
 107# -----------------------------------------
 108# Similar to AC_CHECK_FUNC, but on systems that do not generate
 109# warnings for missing prototypes (e.g. FreeBSD when compiling without
 110# -Wall), it does not work.  By looking for function definition in
 111# libraries, this problem can be worked around.
 112AC_DEFUN([GIT_CHECK_FUNC],[AC_CHECK_FUNC([$1],[
 113  AC_SEARCH_LIBS([$1],,
 114  [$2],[$3])
 115],[$3])])
 116
 117#
 118# GIT_STASH_FLAGS(BASEPATH_VAR)
 119# -----------------------------
 120# Allow for easy stashing of LDFLAGS and CPPFLAGS before running
 121# tests that may want to take user settings into account.
 122AC_DEFUN([GIT_STASH_FLAGS],[
 123if test -n "$1"; then
 124   old_CPPFLAGS="$CPPFLAGS"
 125   old_LDFLAGS="$LDFLAGS"
 126   CPPFLAGS="-I$1/include $CPPFLAGS"
 127   LDFLAGS="-L$1/$lib $LDFLAGS"
 128fi
 129])
 130
 131dnl
 132dnl GIT_UNSTASH_FLAGS(BASEPATH_VAR)
 133dnl -----------------------------
 134dnl Restore the stashed *FLAGS values.
 135AC_DEFUN([GIT_UNSTASH_FLAGS],[
 136if test -n "$1"; then
 137   CPPFLAGS="$old_CPPFLAGS"
 138   LDFLAGS="$old_LDFLAGS"
 139fi
 140])
 141
 142## Configure body starts here.
 143
 144AC_PREREQ(2.59)
 145AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org])
 146
 147AC_CONFIG_SRCDIR([git.c])
 148
 149config_file=config.mak.autogen
 150config_in=config.mak.in
 151
 152GIT_CONF_SUBST([AUTOCONFIGURED], [YesPlease])
 153
 154# Directories holding "saner" versions of common or POSIX binaries.
 155AC_ARG_WITH([sane-tool-path],
 156  [AS_HELP_STRING(
 157    [--with-sane-tool-path=DIR-1[[:DIR-2...:DIR-n]]],
 158    [Directories to prepend to PATH in build system and generated scripts])],
 159  [if test "$withval" = "no"; then
 160    withval=''
 161  else
 162    AC_MSG_NOTICE([Setting SANE_TOOL_PATH to '$withval'])
 163  fi
 164  GIT_CONF_SUBST([SANE_TOOL_PATH], [$withval])],
 165  [# If the "--with-sane-tool-path" option was not given, don't touch
 166   # SANE_TOOL_PATH here, but let defaults in Makefile take care of it.
 167   # This should minimize spurious differences in the behaviour of the
 168   # Git build system when configure is used w.r.t. when it is not.
 169   :])
 170
 171## Site configuration related to programs (before tests)
 172## --with-PACKAGE[=ARG] and --without-PACKAGE
 173#
 174# Set lib to alternative name of lib directory (e.g. lib64)
 175AC_ARG_WITH([lib],
 176 [AS_HELP_STRING([--with-lib=ARG],
 177                 [ARG specifies alternative name for lib directory])],
 178 [if test "$withval" = "no" || test "$withval" = "yes"; then
 179        AC_MSG_WARN([You should provide name for --with-lib=ARG])
 180  else
 181        lib=$withval
 182        AC_MSG_NOTICE([Setting lib to '$lib'])
 183        GIT_CONF_SUBST([lib])
 184  fi])
 185
 186if test -z "$lib"; then
 187   AC_MSG_NOTICE([Setting lib to 'lib' (the default)])
 188   lib=lib
 189fi
 190
 191AC_ARG_ENABLE([pthreads],
 192 [AS_HELP_STRING([--enable-pthreads=FLAGS],
 193  [FLAGS is the value to pass to the compiler to enable POSIX Threads.]
 194  [The default if FLAGS is not specified is to try first -pthread]
 195  [and then -lpthread.]
 196  [--without-pthreads will disable threading.])],
 197[
 198if test "x$enableval" = "xyes"; then
 199   AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads])
 200elif test "x$enableval" != "xno"; then
 201   PTHREAD_CFLAGS=$enableval
 202   AC_MSG_NOTICE([Setting '$PTHREAD_CFLAGS' as the FLAGS to enable POSIX Threads])
 203else
 204   AC_MSG_NOTICE([POSIX Threads will be disabled.])
 205   NO_PTHREADS=YesPlease
 206   USER_NOPTHREAD=1
 207fi],
 208[
 209   AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads.])
 210])
 211
 212# Define option to enable JavaScript minification
 213AC_ARG_ENABLE([jsmin],
 214[AS_HELP_STRING([--enable-jsmin=PATH],
 215  [PATH is the name of a JavaScript minifier or the absolute path to one.])],
 216[
 217  JSMIN=$enableval;
 218  AC_MSG_NOTICE([Setting JSMIN to '$JSMIN' to enable JavaScript minifying])
 219  GIT_CONF_SUBST([JSMIN])
 220])
 221
 222# Define option to enable CSS minification
 223AC_ARG_ENABLE([cssmin],
 224[AS_HELP_STRING([--enable-cssmin=PATH],
 225  [PATH is the name of a CSS minifier or the absolute path to one.])],
 226[
 227  CSSMIN=$enableval;
 228  AC_MSG_NOTICE([Setting CSSMIN to '$CSSMIN' to enable CSS minifying])
 229  GIT_CONF_SUBST([CSSMIN])
 230])
 231
 232## Site configuration (override autodetection)
 233## --with-PACKAGE[=ARG] and --without-PACKAGE
 234AC_MSG_NOTICE([CHECKS for site configuration])
 235#
 236# Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
 237# tests.  These tests take up a significant amount of the total test time
 238# but are not needed unless you plan to talk to SVN repos.
 239#
 240# Define PPC_SHA1 environment variable when running make to make use of
 241# a bundled SHA1 routine optimized for PowerPC.
 242#
 243# Define NO_OPENSSL environment variable if you do not have OpenSSL.
 244# This also implies BLK_SHA1.
 245#
 246# Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
 247# /foo/bar/include and /foo/bar/lib directories.
 248AC_ARG_WITH(openssl,
 249AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
 250AS_HELP_STRING([],              [ARG can be prefix for openssl library and headers]),
 251GIT_PARSE_WITH([openssl]))
 252
 253# Define USE_LIBPCRE if you have and want to use libpcre. git-grep will be
 254# able to use Perl-compatible regular expressions.
 255#
 256# Define LIBPCREDIR=/foo/bar if your libpcre header and library files are in
 257# /foo/bar/include and /foo/bar/lib directories.
 258#
 259AC_ARG_WITH(libpcre,
 260AS_HELP_STRING([--with-libpcre],[support Perl-compatible regexes (default is NO)])
 261AS_HELP_STRING([],           [ARG can be also prefix for libpcre library and headers]),
 262    if test "$withval" = "no"; then
 263        USE_LIBPCRE=
 264    elif test "$withval" = "yes"; then
 265        USE_LIBPCRE=YesPlease
 266    else
 267        USE_LIBPCRE=YesPlease
 268        LIBPCREDIR=$withval
 269        AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
 270        GIT_CONF_SUBST([LIBPCREDIR])
 271    fi)
 272#
 273# Define NO_CURL if you do not have curl installed.  git-http-pull and
 274# git-http-push are not built, and you cannot use http:// and https://
 275# transports.
 276#
 277# Define CURLDIR=/foo/bar if your curl header and library files are in
 278# /foo/bar/include and /foo/bar/lib directories.
 279AC_ARG_WITH(curl,
 280AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
 281AS_HELP_STRING([],           [ARG can be also prefix for curl library and headers]),
 282GIT_PARSE_WITH(curl))
 283#
 284# Define NO_EXPAT if you do not have expat installed.  git-http-push is
 285# not built, and you cannot push using http:// and https:// transports.
 286#
 287# Define EXPATDIR=/foo/bar if your expat header and library files are in
 288# /foo/bar/include and /foo/bar/lib directories.
 289AC_ARG_WITH(expat,
 290AS_HELP_STRING([--with-expat],
 291[support git-push using http:// and https:// transports via WebDAV (default is YES)])
 292AS_HELP_STRING([],            [ARG can be also prefix for expat library and headers]),
 293GIT_PARSE_WITH(expat))
 294#
 295# Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
 296# installed in /sw, but don't want GIT to link against any libraries
 297# installed there.  If defined you may specify your own (or Fink's)
 298# include directories and library directories by defining CFLAGS
 299# and LDFLAGS appropriately.
 300#
 301# Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
 302# have DarwinPorts installed in /opt/local, but don't want GIT to
 303# link against any libraries installed there.  If defined you may
 304# specify your own (or DarwinPort's) include directories and
 305# library directories by defining CFLAGS and LDFLAGS appropriately.
 306#
 307# Define NO_MMAP if you want to avoid mmap.
 308#
 309# Define NO_ICONV if your libc does not properly support iconv.
 310AC_ARG_WITH(iconv,
 311AS_HELP_STRING([--without-iconv],
 312[if your architecture doesn't properly support iconv])
 313AS_HELP_STRING([--with-iconv=PATH],
 314[PATH is prefix for libiconv library and headers])
 315AS_HELP_STRING([],
 316[used only if you need linking with libiconv]),
 317GIT_PARSE_WITH(iconv))
 318
 319## --enable-FEATURE[=ARG] and --disable-FEATURE
 320#
 321# Define USE_NSEC below if you want git to care about sub-second file mtimes
 322# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
 323# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
 324# randomly break unless your underlying filesystem supports those sub-second
 325# times (my ext3 doesn't).
 326#
 327# Define USE_STDEV below if you want git to care about the underlying device
 328# change being considered an inode change from the update-index perspective.
 329
 330#
 331# Allow user to set ETC_GITCONFIG variable
 332GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG,
 333                        Use VALUE instead of /etc/gitconfig as the
 334                        global git configuration file.
 335                        If VALUE is not fully qualified it will be interpreted
 336                        as a path relative to the computed prefix at runtime.)
 337
 338#
 339# Allow user to set ETC_GITATTRIBUTES variable
 340GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES,
 341                        Use VALUE instead of /etc/gitattributes as the
 342                        global git attributes file.
 343                        If VALUE is not fully qualified it will be interpreted
 344                        as a path relative to the computed prefix at runtime.)
 345
 346#
 347# Allow user to set the default pager
 348GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER,
 349                        Use VALUE as the fall-back pager instead of 'less'.
 350                        This is used by things like 'git log' when the user
 351                        does not specify a pager to use through alternate
 352                        methods. eg: /usr/bin/pager)
 353#
 354# Allow user to set the default editor
 355GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR,
 356                        Use VALUE as the fall-back editor instead of 'vi'.
 357                        This is used by things like 'git commit' when the user
 358                        does not specify a preferred editor through other
 359                        methods. eg: /usr/bin/editor)
 360
 361#
 362# Define SHELL_PATH to provide path to shell.
 363GIT_ARG_SET_PATH(shell)
 364#
 365# Define PERL_PATH to provide path to Perl.
 366GIT_ARG_SET_PATH(perl)
 367#
 368# Define PYTHON_PATH to provide path to Python.
 369GIT_ARG_SET_PATH(python, allow-without)
 370#
 371# Define ZLIB_PATH to provide path to zlib.
 372GIT_ARG_SET_PATH(zlib)
 373#
 374# Declare the with-tcltk/without-tcltk options.
 375AC_ARG_WITH(tcltk,
 376AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
 377AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
 378AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
 379AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),
 380GIT_PARSE_WITH(tcltk))
 381#
 382
 383
 384## Checks for programs.
 385AC_MSG_NOTICE([CHECKS for programs])
 386#
 387AC_PROG_CC([cc gcc])
 388AC_C_INLINE
 389case $ac_cv_c_inline in
 390  inline | yes | no)    ;;
 391  *)                    AC_SUBST([INLINE], [$ac_cv_c_inline]) ;;
 392esac
 393
 394# which switch to pass runtime path to dynamic libraries to the linker
 395AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [
 396   SAVE_LDFLAGS="${LDFLAGS}"
 397   LDFLAGS="${SAVE_LDFLAGS} -R /"
 398   AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no])
 399   LDFLAGS="${SAVE_LDFLAGS}"
 400])
 401if test "$git_cv_ld_dashr" = "yes"; then
 402   AC_SUBST(CC_LD_DYNPATH, [-R])
 403else
 404   AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [
 405      SAVE_LDFLAGS="${LDFLAGS}"
 406      LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/"
 407      AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no])
 408      LDFLAGS="${SAVE_LDFLAGS}"
 409   ])
 410   if test "$git_cv_ld_wl_rpath" = "yes"; then
 411      AC_SUBST(CC_LD_DYNPATH, [-Wl,-rpath,])
 412   else
 413      AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [
 414         SAVE_LDFLAGS="${LDFLAGS}"
 415         LDFLAGS="${SAVE_LDFLAGS} -rpath /"
 416         AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no])
 417         LDFLAGS="${SAVE_LDFLAGS}"
 418      ])
 419      if test "$git_cv_ld_rpath" = "yes"; then
 420         AC_SUBST(CC_LD_DYNPATH, [-rpath])
 421      else
 422         AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
 423      fi
 424   fi
 425fi
 426#AC_PROG_INSTALL                # needs install-sh or install.sh in sources
 427AC_CHECK_TOOLS(AR, [gar ar], :)
 428AC_CHECK_PROGS(TAR, [gtar tar])
 429AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff])
 430# TCLTK_PATH will be set to some value if we want Tcl/Tk
 431# or will be empty otherwise.
 432if test -z "$NO_TCLTK"; then
 433  if test "$with_tcltk" = ""; then
 434  # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
 435    TCLTK_PATH=wish
 436    AC_SUBST(TCLTK_PATH)
 437  elif test "$with_tcltk" = "yes"; then
 438  # Tcl/Tk check requested.
 439    AC_CHECK_PROGS(TCLTK_PATH, [wish], )
 440  else
 441    AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
 442    TCLTK_PATH="$with_tcltk"
 443    AC_SUBST(TCLTK_PATH)
 444  fi
 445fi
 446AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
 447if test -n "$ASCIIDOC"; then
 448        AC_MSG_CHECKING([for asciidoc version])
 449        asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
 450        case "${asciidoc_version}" in
 451        asciidoc' '8*)
 452                AC_MSG_RESULT([${asciidoc_version}])
 453                ;;
 454        *)
 455                AC_MSG_RESULT([${asciidoc_version} (unknown)])
 456                ;;
 457        esac
 458fi
 459
 460
 461## Checks for libraries.
 462AC_MSG_NOTICE([CHECKS for libraries])
 463#
 464# Define NO_OPENSSL environment variable if you do not have OpenSSL.
 465# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
 466
 467GIT_STASH_FLAGS($OPENSSLDIR)
 468
 469AC_CHECK_LIB([crypto], [SHA1_Init],
 470[NEEDS_SSL_WITH_CRYPTO=],
 471[AC_CHECK_LIB([ssl], [SHA1_Init],
 472 [NEEDS_SSL_WITH_CRYPTO=YesPlease],
 473 [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])])
 474
 475GIT_UNSTASH_FLAGS($OPENSSLDIR)
 476
 477AC_SUBST(NEEDS_SSL_WITH_CRYPTO)
 478AC_SUBST(NO_OPENSSL)
 479
 480#
 481# Define USE_LIBPCRE if you have and want to use libpcre. git-grep will be
 482# able to use Perl-compatible regular expressions.
 483#
 484
 485if test -n "$USE_LIBPCRE"; then
 486
 487GIT_STASH_FLAGS($LIBPCREDIR)
 488
 489AC_CHECK_LIB([pcre], [pcre_version],
 490[USE_LIBPCRE=YesPlease],
 491[USE_LIBPCRE=])
 492
 493GIT_UNSTASH_FLAGS($LIBPCREDIR)
 494
 495AC_SUBST(USE_LIBPCRE)
 496
 497fi
 498
 499#
 500# Define NO_CURL if you do not have libcurl installed.  git-http-pull and
 501# git-http-push are not built, and you cannot use http:// and https://
 502# transports.
 503
 504GIT_STASH_FLAGS($CURLDIR)
 505
 506AC_CHECK_LIB([curl], [curl_global_init],
 507[NO_CURL=],
 508[NO_CURL=YesPlease])
 509
 510GIT_UNSTASH_FLAGS($CURLDIR)
 511
 512AC_SUBST(NO_CURL)
 513
 514#
 515# Define NO_EXPAT if you do not have expat installed.  git-http-push is
 516# not built, and you cannot push using http:// and https:// transports.
 517
 518GIT_STASH_FLAGS($EXPATDIR)
 519
 520AC_CHECK_LIB([expat], [XML_ParserCreate],
 521[NO_EXPAT=],
 522[NO_EXPAT=YesPlease])
 523
 524GIT_UNSTASH_FLAGS($EXPATDIR)
 525
 526AC_SUBST(NO_EXPAT)
 527
 528#
 529# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
 530# some Solaris installations).
 531# Define NO_ICONV if neither libc nor libiconv support iconv.
 532
 533if test -z "$NO_ICONV"; then
 534
 535GIT_STASH_FLAGS($ICONVDIR)
 536
 537AC_DEFUN([ICONVTEST_SRC],
 538[AC_LANG_PROGRAM([#include <iconv.h>],
 539 [iconv_open("", "");])])
 540
 541if test -n "$ICONVDIR"; then
 542   lib_order="-liconv -lc"
 543else
 544   lib_order="-lc -liconv"
 545fi
 546
 547NO_ICONV=YesPlease
 548
 549for l in $lib_order; do
 550    if test "$l" = "-liconv"; then
 551       NEEDS_LIBICONV=YesPlease
 552    else
 553       NEEDS_LIBICONV=
 554    fi
 555
 556    old_LIBS="$LIBS"
 557    LIBS="$LIBS $l"
 558    AC_MSG_CHECKING([for iconv in $l])
 559    AC_LINK_IFELSE([ICONVTEST_SRC],
 560        [AC_MSG_RESULT([yes])
 561        NO_ICONV=
 562        break],
 563        [AC_MSG_RESULT([no])])
 564    LIBS="$old_LIBS"
 565done
 566
 567#in case of break
 568LIBS="$old_LIBS"
 569
 570GIT_UNSTASH_FLAGS($ICONVDIR)
 571
 572AC_SUBST(NEEDS_LIBICONV)
 573AC_SUBST(NO_ICONV)
 574
 575if test -n "$NO_ICONV"; then
 576    NEEDS_LIBICONV=
 577fi
 578
 579fi
 580
 581#
 582# Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
 583
 584GIT_STASH_FLAGS($ZLIB_PATH)
 585
 586AC_DEFUN([ZLIBTEST_SRC], [
 587AC_LANG_PROGRAM([#include <zlib.h>],
 588 [deflateBound(0, 0);])])
 589AC_MSG_CHECKING([for deflateBound in -lz])
 590old_LIBS="$LIBS"
 591LIBS="$LIBS -lz"
 592AC_LINK_IFELSE([ZLIBTEST_SRC],
 593        [AC_MSG_RESULT([yes])],
 594        [AC_MSG_RESULT([no])
 595        NO_DEFLATE_BOUND=yes])
 596LIBS="$old_LIBS"
 597
 598GIT_UNSTASH_FLAGS($ZLIB_PATH)
 599
 600AC_SUBST(NO_DEFLATE_BOUND)
 601
 602#
 603# Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
 604# Patrick Mauritz).
 605AC_CHECK_LIB([c], [socket],
 606[NEEDS_SOCKET=],
 607[NEEDS_SOCKET=YesPlease])
 608AC_SUBST(NEEDS_SOCKET)
 609test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
 610
 611#
 612# The next few tests will define NEEDS_RESOLV if linking with
 613# libresolv provides some of the functions we would normally get
 614# from libc.
 615NEEDS_RESOLV=
 616AC_SUBST(NEEDS_RESOLV)
 617#
 618# Define NO_INET_NTOP if linking with -lresolv is not enough.
 619# Solaris 2.7 in particular hos inet_ntop in -lresolv.
 620NO_INET_NTOP=
 621AC_SUBST(NO_INET_NTOP)
 622AC_CHECK_FUNC([inet_ntop],
 623        [],
 624    [AC_CHECK_LIB([resolv], [inet_ntop],
 625            [NEEDS_RESOLV=YesPlease],
 626        [NO_INET_NTOP=YesPlease])
 627])
 628#
 629# Define NO_INET_PTON if linking with -lresolv is not enough.
 630# Solaris 2.7 in particular hos inet_pton in -lresolv.
 631NO_INET_PTON=
 632AC_SUBST(NO_INET_PTON)
 633AC_CHECK_FUNC([inet_pton],
 634        [],
 635    [AC_CHECK_LIB([resolv], [inet_pton],
 636            [NEEDS_RESOLV=YesPlease],
 637        [NO_INET_PTON=YesPlease])
 638])
 639#
 640# Define NO_HSTRERROR if linking with -lresolv is not enough.
 641# Solaris 2.6 in particular has no hstrerror, even in -lresolv.
 642NO_HSTRERROR=
 643AC_CHECK_FUNC([hstrerror],
 644        [],
 645    [AC_CHECK_LIB([resolv], [hstrerror],
 646            [NEEDS_RESOLV=YesPlease],
 647        [NO_HSTRERROR=YesPlease])
 648])
 649AC_SUBST(NO_HSTRERROR)
 650#
 651# If any of the above tests determined that -lresolv is needed at
 652# build-time, also set it here for remaining configure-time checks.
 653test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv"
 654
 655AC_CHECK_LIB([c], [basename],
 656[NEEDS_LIBGEN=],
 657[NEEDS_LIBGEN=YesPlease])
 658AC_SUBST(NEEDS_LIBGEN)
 659test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen"
 660
 661AC_CHECK_LIB([c], [gettext],
 662[LIBC_CONTAINS_LIBINTL=YesPlease],
 663[LIBC_CONTAINS_LIBINTL=])
 664AC_SUBST(LIBC_CONTAINS_LIBINTL)
 665
 666#
 667# Define NO_GETTEXT if you don't want Git output to be translated.
 668# A translated Git requires GNU libintl or another gettext implementation
 669AC_CHECK_HEADER([libintl.h],
 670[NO_GETTEXT=],
 671[NO_GETTEXT=YesPlease])
 672AC_SUBST(NO_GETTEXT)
 673
 674if test -z "$NO_GETTEXT"; then
 675    test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl"
 676fi
 677
 678## Checks for header files.
 679AC_MSG_NOTICE([CHECKS for header files])
 680#
 681# Define NO_SYS_SELECT_H if you don't have sys/select.h.
 682AC_CHECK_HEADER([sys/select.h],
 683[NO_SYS_SELECT_H=],
 684[NO_SYS_SELECT_H=UnfortunatelyYes])
 685AC_SUBST(NO_SYS_SELECT_H)
 686#
 687# Define NO_SYS_POLL_H if you don't have sys/poll.h
 688AC_CHECK_HEADER([sys/poll.h],
 689[NO_SYS_POLL_H=],
 690[NO_SYS_POLL_H=UnfortunatelyYes])
 691AC_SUBST(NO_SYS_POLL_H)
 692#
 693# Define NO_INTTYPES_H if you don't have inttypes.h
 694AC_CHECK_HEADER([inttypes.h],
 695[NO_INTTYPES_H=],
 696[NO_INTTYPES_H=UnfortunatelyYes])
 697AC_SUBST(NO_INTTYPES_H)
 698#
 699# Define OLD_ICONV if your library has an old iconv(), where the second
 700# (input buffer pointer) parameter is declared with type (const char **).
 701AC_DEFUN([OLDICONVTEST_SRC], [
 702AC_LANG_PROGRAM([[
 703#include <iconv.h>
 704
 705extern size_t iconv(iconv_t cd,
 706                    char **inbuf, size_t *inbytesleft,
 707                    char **outbuf, size_t *outbytesleft);
 708]], [])])
 709
 710GIT_STASH_FLAGS($ICONVDIR)
 711
 712AC_MSG_CHECKING([for old iconv()])
 713AC_COMPILE_IFELSE([OLDICONVTEST_SRC],
 714        [AC_MSG_RESULT([no])],
 715        [AC_MSG_RESULT([yes])
 716        OLD_ICONV=UnfortunatelyYes])
 717
 718GIT_UNSTASH_FLAGS($ICONVDIR)
 719
 720AC_SUBST(OLD_ICONV)
 721
 722## Checks for typedefs, structures, and compiler characteristics.
 723AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
 724#
 725TYPE_SOCKLEN_T
 726case $ac_cv_type_socklen_t in
 727  yes)  ;;
 728  *)    AC_SUBST([SOCKLEN_T], [$git_cv_socklen_t_equiv]) ;;
 729esac
 730
 731# Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
 732AC_CHECK_MEMBER(struct dirent.d_ino,
 733[NO_D_INO_IN_DIRENT=],
 734[NO_D_INO_IN_DIRENT=YesPlease],
 735[#include <dirent.h>])
 736AC_SUBST(NO_D_INO_IN_DIRENT)
 737#
 738# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
 739# d_type in struct dirent (latest Cygwin -- will be fixed soonish).
 740AC_CHECK_MEMBER(struct dirent.d_type,
 741[NO_D_TYPE_IN_DIRENT=],
 742[NO_D_TYPE_IN_DIRENT=YesPlease],
 743[#include <dirent.h>])
 744AC_SUBST(NO_D_TYPE_IN_DIRENT)
 745#
 746# Define NO_SOCKADDR_STORAGE if your platform does not have struct
 747# sockaddr_storage.
 748AC_CHECK_TYPE(struct sockaddr_storage,
 749[NO_SOCKADDR_STORAGE=],
 750[NO_SOCKADDR_STORAGE=YesPlease],[
 751#include <sys/types.h>
 752#include <sys/socket.h>
 753])
 754AC_SUBST(NO_SOCKADDR_STORAGE)
 755#
 756# Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
 757AC_CHECK_TYPE([struct addrinfo],[
 758 GIT_CHECK_FUNC([getaddrinfo],
 759  [NO_IPV6=],
 760  [NO_IPV6=YesPlease])
 761],[NO_IPV6=YesPlease],[
 762#include <sys/types.h>
 763#include <sys/socket.h>
 764#include <netdb.h>
 765])
 766AC_SUBST(NO_IPV6)
 767#
 768# Define NO_REGEX if you have no or inferior regex support in your C library.
 769AC_CACHE_CHECK([whether the platform regex can handle null bytes],
 770 [ac_cv_c_excellent_regex], [
 771AC_EGREP_CPP(yippeeyeswehaveit,
 772        AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
 773#include <regex.h>
 774],
 775[#ifdef REG_STARTEND
 776yippeeyeswehaveit
 777#endif
 778]),
 779        [ac_cv_c_excellent_regex=yes],
 780        [ac_cv_c_excellent_regex=no])
 781])
 782if test $ac_cv_c_excellent_regex = yes; then
 783        NO_REGEX=
 784else
 785        NO_REGEX=YesPlease
 786fi
 787AC_SUBST(NO_REGEX)
 788#
 789# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
 790# when attempting to read from an fopen'ed directory.
 791AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
 792 [ac_cv_fread_reads_directories],
 793[
 794AC_RUN_IFELSE(
 795        [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
 796                [[char c;
 797                FILE *f = fopen(".", "r");
 798                return f && fread(&c, 1, 1, f)]])],
 799        [ac_cv_fread_reads_directories=no],
 800        [ac_cv_fread_reads_directories=yes])
 801])
 802if test $ac_cv_fread_reads_directories = yes; then
 803        FREAD_READS_DIRECTORIES=UnfortunatelyYes
 804else
 805        FREAD_READS_DIRECTORIES=
 806fi
 807AC_SUBST(FREAD_READS_DIRECTORIES)
 808#
 809# Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
 810# or vsnprintf() return -1 instead of number of characters which would
 811# have been written to the final string if enough space had been available.
 812AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
 813 [ac_cv_snprintf_returns_bogus],
 814[
 815AC_RUN_IFELSE(
 816        [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
 817                #include "stdarg.h"
 818
 819                int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
 820                {
 821                  int ret;
 822                  va_list ap;
 823                  va_start(ap, format);
 824                  ret = vsnprintf(str, maxsize, format, ap);
 825                  va_end(ap);
 826                  return ret;
 827                }],
 828                [[char buf[6];
 829                  if (test_vsnprintf(buf, 3, "%s", "12345") != 5
 830                      || strcmp(buf, "12")) return 1;
 831                  if (snprintf(buf, 3, "%s", "12345") != 5
 832                      || strcmp(buf, "12")) return 1]])],
 833        [ac_cv_snprintf_returns_bogus=no],
 834        [ac_cv_snprintf_returns_bogus=yes])
 835])
 836if test $ac_cv_snprintf_returns_bogus = yes; then
 837        SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
 838else
 839        SNPRINTF_RETURNS_BOGUS=
 840fi
 841AC_SUBST(SNPRINTF_RETURNS_BOGUS)
 842
 843
 844## Checks for library functions.
 845## (in default C library and libraries checked by AC_CHECK_LIB)
 846AC_MSG_NOTICE([CHECKS for library functions])
 847#
 848# Define NO_LIBGEN_H if you don't have libgen.h.
 849AC_CHECK_HEADER([libgen.h],
 850[NO_LIBGEN_H=],
 851[NO_LIBGEN_H=YesPlease])
 852AC_SUBST(NO_LIBGEN_H)
 853#
 854# Define HAVE_PATHS_H if you have paths.h.
 855AC_CHECK_HEADER([paths.h],
 856[HAVE_PATHS_H=YesPlease],
 857[HAVE_PATHS_H=])
 858AC_SUBST(HAVE_PATHS_H)
 859#
 860# Define HAVE_LIBCHARSET_H if have libcharset.h
 861AC_CHECK_HEADER([libcharset.h],
 862[HAVE_LIBCHARSET_H=YesPlease],
 863[HAVE_LIBCHARSET_H=])
 864AC_SUBST(HAVE_LIBCHARSET_H)
 865# Define CHARSET_LIB if libiconv does not export the locale_charset symbol
 866# and libcharset does
 867CHARSET_LIB=
 868AC_CHECK_LIB([iconv], [locale_charset],
 869       [],
 870       [AC_CHECK_LIB([charset], [locale_charset],
 871                     [CHARSET_LIB=-lcharset])
 872       ]
 873)
 874AC_SUBST(CHARSET_LIB)
 875#
 876# Define NO_STRCASESTR if you don't have strcasestr.
 877GIT_CHECK_FUNC(strcasestr,
 878[NO_STRCASESTR=],
 879[NO_STRCASESTR=YesPlease])
 880AC_SUBST(NO_STRCASESTR)
 881#
 882# Define NO_STRTOK_R if you don't have strtok_r
 883GIT_CHECK_FUNC(strtok_r,
 884[NO_STRTOK_R=],
 885[NO_STRTOK_R=YesPlease])
 886AC_SUBST(NO_STRTOK_R)
 887#
 888# Define NO_FNMATCH if you don't have fnmatch
 889GIT_CHECK_FUNC(fnmatch,
 890[NO_FNMATCH=],
 891[NO_FNMATCH=YesPlease])
 892AC_SUBST(NO_FNMATCH)
 893#
 894# Define NO_FNMATCH_CASEFOLD if your fnmatch function doesn't have the
 895# FNM_CASEFOLD GNU extension.
 896AC_CACHE_CHECK([whether the fnmatch function supports the FNMATCH_CASEFOLD GNU extension],
 897 [ac_cv_c_excellent_fnmatch], [
 898AC_EGREP_CPP(yippeeyeswehaveit,
 899        AC_LANG_PROGRAM([
 900#include <fnmatch.h>
 901],
 902[#ifdef FNM_CASEFOLD
 903yippeeyeswehaveit
 904#endif
 905]),
 906        [ac_cv_c_excellent_fnmatch=yes],
 907        [ac_cv_c_excellent_fnmatch=no])
 908])
 909if test $ac_cv_c_excellent_fnmatch = yes; then
 910        NO_FNMATCH_CASEFOLD=
 911else
 912        NO_FNMATCH_CASEFOLD=YesPlease
 913fi
 914AC_SUBST(NO_FNMATCH_CASEFOLD)
 915#
 916# Define NO_MEMMEM if you don't have memmem.
 917GIT_CHECK_FUNC(memmem,
 918[NO_MEMMEM=],
 919[NO_MEMMEM=YesPlease])
 920AC_SUBST(NO_MEMMEM)
 921#
 922# Define NO_STRLCPY if you don't have strlcpy.
 923GIT_CHECK_FUNC(strlcpy,
 924[NO_STRLCPY=],
 925[NO_STRLCPY=YesPlease])
 926AC_SUBST(NO_STRLCPY)
 927#
 928# Define NO_UINTMAX_T if your platform does not have uintmax_t
 929AC_CHECK_TYPE(uintmax_t,
 930[NO_UINTMAX_T=],
 931[NO_UINTMAX_T=YesPlease],[
 932#include <inttypes.h>
 933])
 934AC_SUBST(NO_UINTMAX_T)
 935#
 936# Define NO_STRTOUMAX if you don't have strtoumax in the C library.
 937GIT_CHECK_FUNC(strtoumax,
 938[NO_STRTOUMAX=],
 939[NO_STRTOUMAX=YesPlease])
 940AC_SUBST(NO_STRTOUMAX)
 941#
 942# Define NO_SETENV if you don't have setenv in the C library.
 943GIT_CHECK_FUNC(setenv,
 944[NO_SETENV=],
 945[NO_SETENV=YesPlease])
 946AC_SUBST(NO_SETENV)
 947#
 948# Define NO_UNSETENV if you don't have unsetenv in the C library.
 949GIT_CHECK_FUNC(unsetenv,
 950[NO_UNSETENV=],
 951[NO_UNSETENV=YesPlease])
 952AC_SUBST(NO_UNSETENV)
 953#
 954# Define NO_MKDTEMP if you don't have mkdtemp in the C library.
 955GIT_CHECK_FUNC(mkdtemp,
 956[NO_MKDTEMP=],
 957[NO_MKDTEMP=YesPlease])
 958AC_SUBST(NO_MKDTEMP)
 959#
 960# Define NO_MKSTEMPS if you don't have mkstemps in the C library.
 961GIT_CHECK_FUNC(mkstemps,
 962[NO_MKSTEMPS=],
 963[NO_MKSTEMPS=YesPlease])
 964AC_SUBST(NO_MKSTEMPS)
 965#
 966# Define NO_INITGROUPS if you don't have initgroups in the C library.
 967GIT_CHECK_FUNC(initgroups,
 968[NO_INITGROUPS=],
 969[NO_INITGROUPS=YesPlease])
 970AC_SUBST(NO_INITGROUPS)
 971#
 972#
 973# Define NO_MMAP if you want to avoid mmap.
 974#
 975# Define NO_ICONV if your libc does not properly support iconv.
 976
 977
 978## Other checks.
 979# Define USE_PIC if you need the main git objects to be built with -fPIC
 980# in order to build and link perl/Git.so.  x86-64 seems to need this.
 981#
 982# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
 983# Enable it on Windows.  By default, symrefs are still used.
 984#
 985# Define NO_PTHREADS if we do not have pthreads.
 986#
 987# Define PTHREAD_LIBS to the linker flag used for Pthread support.
 988AC_DEFUN([PTHREADTEST_SRC], [
 989AC_LANG_PROGRAM([[
 990#include <pthread.h>
 991]], [[
 992        pthread_mutex_t test_mutex;
 993        pthread_key_t test_key;
 994        int retcode = 0;
 995        retcode |= pthread_key_create(&test_key, (void *)0);
 996        retcode |= pthread_mutex_init(&test_mutex,(void *)0);
 997        retcode |= pthread_mutex_lock(&test_mutex);
 998        retcode |= pthread_mutex_unlock(&test_mutex);
 999        return retcode;
1000]])])
1001
1002dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(
1003dnl   [[#include <pthread.h>]],
1004dnl   [[pthread_mutex_t test_mutex;]]
1005dnl )])
1006
1007NO_PTHREADS=UnfortunatelyYes
1008PTHREAD_LIBS=
1009
1010if test -n "$USER_NOPTHREAD"; then
1011   AC_MSG_NOTICE([Skipping POSIX Threads at user request.])
1012# handle these separately since PTHREAD_CFLAGS could be '-lpthreads
1013# -D_REENTRANT' or some such.
1014elif test -z "$PTHREAD_CFLAGS"; then
1015  threads_found=no
1016  for opt in -mt -pthread -lpthread; do
1017     old_CFLAGS="$CFLAGS"
1018     CFLAGS="$opt $CFLAGS"
1019     AC_MSG_CHECKING([Checking for POSIX Threads with '$opt'])
1020     AC_LINK_IFELSE([PTHREADTEST_SRC],
1021        [AC_MSG_RESULT([yes])
1022                NO_PTHREADS=
1023                PTHREAD_LIBS="$opt"
1024                PTHREAD_CFLAGS="$opt"
1025                threads_found=yes
1026                break
1027        ],
1028        [AC_MSG_RESULT([no])])
1029      CFLAGS="$old_CFLAGS"
1030  done
1031  if test $threads_found != yes; then
1032    AC_CHECK_LIB([pthread], [pthread_create],
1033        [PTHREAD_LIBS="-lpthread"],
1034        [NO_PTHREADS=UnfortunatelyYes])
1035  fi
1036else
1037  old_CFLAGS="$CFLAGS"
1038  CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
1039  AC_MSG_CHECKING([Checking for POSIX Threads with '$PTHREAD_CFLAGS'])
1040  AC_LINK_IFELSE([PTHREADTEST_SRC],
1041        [AC_MSG_RESULT([yes])
1042                NO_PTHREADS=
1043                PTHREAD_LIBS="$PTHREAD_CFLAGS"
1044        ],
1045        [AC_MSG_RESULT([no])])
1046
1047  CFLAGS="$old_CFLAGS"
1048fi
1049
1050CFLAGS="$old_CFLAGS"
1051
1052AC_SUBST(PTHREAD_CFLAGS)
1053AC_SUBST(PTHREAD_LIBS)
1054AC_SUBST(NO_PTHREADS)
1055
1056## Output files
1057AC_CONFIG_FILES(["${config_file}":"${config_in}"])
1058AC_OUTPUT