a63fe77b825e0ebe0d6bd2ea7126318af5f1493c
   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 ${config_file}.
   9AC_DEFUN([GIT_CONF_SUBST],
  10   [AC_REQUIRE([GIT_CONF_SUBST_INIT])
  11   config_appended_defs="$config_appended_defs${newline}$1=$2"])
  12
  13# GIT_CONF_SUBST_INIT
  14# -------------------
  15# Prepare shell variables and autoconf machine required by later calls
  16# to GIT_CONF_SUBST.
  17AC_DEFUN([GIT_CONF_SUBST_INIT],
  18    [config_appended_defs=; newline='
  19'
  20    AC_CONFIG_COMMANDS([$config_file],
  21                       [echo "$config_appended_defs" >> "$config_file"],
  22                       [config_file=$config_file
  23                        config_appended_defs="$config_appended_defs"])])
  24
  25# GIT_ARG_SET_PATH(PROGRAM)
  26# -------------------------
  27# Provide --with-PROGRAM=PATH option to set PATH to PROGRAM
  28# Optional second argument allows setting NO_PROGRAM=YesPlease if
  29# --without-PROGRAM version used.
  30AC_DEFUN([GIT_ARG_SET_PATH],
  31    [AC_ARG_WITH([$1],
  32        [AS_HELP_STRING([--with-$1=PATH],
  33                        [provide PATH to $1])],
  34        [GIT_CONF_APPEND_PATH([$1], [$2])],
  35        [])])
  36
  37# GIT_CONF_APPEND_PATH(PROGRAM)
  38# -----------------------------
  39# Parse --with-PROGRAM=PATH option to set PROGRAM_PATH=PATH
  40# Used by GIT_ARG_SET_PATH(PROGRAM)
  41# Optional second argument allows setting NO_PROGRAM=YesPlease if
  42# --without-PROGRAM is used.
  43AC_DEFUN([GIT_CONF_APPEND_PATH],
  44    [m4_pushdef([GIT_UC_PROGRAM], m4_toupper([$1]))dnl
  45    if test "$withval" = "no"; then
  46        if test -n "$2"; then
  47                GIT_UC_PROGRAM[]_PATH=$withval
  48                AC_MSG_NOTICE([Disabling use of GIT_UC_PROGRAM])
  49                GIT_CONF_SUBST([NO_]GIT_UC_PROGRAM, [YesPlease])
  50                GIT_CONF_SUBST(GIT_UC_PROGRAM[]_PATH, [])
  51        else
  52                AC_MSG_ERROR([You cannot use git without $1])
  53        fi
  54    else
  55        if test "$withval" = "yes"; then
  56                AC_MSG_WARN([You should provide path for --with-$1=PATH])
  57        else
  58                GIT_UC_PROGRAM[]_PATH=$withval
  59                AC_MSG_NOTICE([Setting GIT_UC_PROGRAM[]_PATH to $withval])
  60                GIT_CONF_SUBST(GIT_UC_PROGRAM[]_PATH, [$withval])
  61        fi
  62    fi
  63    m4_popdef([GIT_UC_PROGRAM])])
  64
  65# GIT_PARSE_WITH(PACKAGE)
  66# -----------------------
  67# For use in AC_ARG_WITH action-if-found, for packages default ON.
  68# * Set NO_PACKAGE=YesPlease for --without-PACKAGE
  69# * Set PACKAGEDIR=PATH for --with-PACKAGE=PATH
  70# * Unset NO_PACKAGE for --with-PACKAGE without ARG
  71AC_DEFUN([GIT_PARSE_WITH],
  72    [m4_pushdef([GIT_UC_PACKAGE], m4_toupper([$1]))dnl
  73    if test "$withval" = "no"; then
  74        NO_[]GIT_UC_PACKAGE=YesPlease
  75    elif test "$withval" = "yes"; then
  76        NO_[]GIT_UC_PACKAGE=
  77    else
  78        NO_[]GIT_UC_PACKAGE=
  79        GIT_UC_PACKAGE[]DIR=$withval
  80        AC_MSG_NOTICE([Setting GIT_UC_PACKAGE[]DIR to $withval])
  81        GIT_CONF_SUBST(GIT_UC_PACKAGE[DIR], [$withval])
  82    fi
  83    m4_popdef([GIT_UC_PACKAGE])])
  84
  85# GIT_PARSE_WITH_SET_MAKE_VAR(WITHNAME, VAR, HELP_TEXT)
  86# -----------------------------------------------------
  87# Set VAR to the value specied by --with-WITHNAME.
  88# No verification of arguments is performed, but warnings are issued
  89# if either 'yes' or 'no' is specified.
  90# HELP_TEXT is presented when --help is called.
  91# This is a direct way to allow setting variables in the Makefile.
  92AC_DEFUN([GIT_PARSE_WITH_SET_MAKE_VAR],
  93[AC_ARG_WITH([$1],
  94 [AS_HELP_STRING([--with-$1=VALUE], $3)],
  95 if test -n "$withval"; then
  96  if test "$withval" = "yes" -o "$withval" = "no"; then
  97    AC_MSG_WARN([You likely do not want either 'yes' or 'no' as]
  98                     [a value for $1 ($2).  Maybe you do...?])
  99  fi
 100  AC_MSG_NOTICE([Setting $2 to $withval])
 101  GIT_CONF_SUBST([$2], [$withval])
 102 fi)])# GIT_PARSE_WITH_SET_MAKE_VAR
 103
 104#
 105# GIT_CHECK_FUNC(FUNCTION, IFTRUE, IFFALSE)
 106# -----------------------------------------
 107# Similar to AC_CHECK_FUNC, but on systems that do not generate
 108# warnings for missing prototypes (e.g. FreeBSD when compiling without
 109# -Wall), it does not work.  By looking for function definition in
 110# libraries, this problem can be worked around.
 111AC_DEFUN([GIT_CHECK_FUNC],[AC_CHECK_FUNC([$1],[
 112  AC_SEARCH_LIBS([$1],,
 113  [$2],[$3])
 114],[$3])])
 115
 116#
 117# GIT_STASH_FLAGS(BASEPATH_VAR)
 118# -----------------------------
 119# Allow for easy stashing of LDFLAGS and CPPFLAGS before running
 120# tests that may want to take user settings into account.
 121AC_DEFUN([GIT_STASH_FLAGS],[
 122if test -n "$1"; then
 123   old_CPPFLAGS="$CPPFLAGS"
 124   old_LDFLAGS="$LDFLAGS"
 125   CPPFLAGS="-I$1/include $CPPFLAGS"
 126   LDFLAGS="-L$1/$lib $LDFLAGS"
 127fi
 128])
 129
 130dnl
 131dnl GIT_UNSTASH_FLAGS(BASEPATH_VAR)
 132dnl -----------------------------
 133dnl Restore the stashed *FLAGS values.
 134AC_DEFUN([GIT_UNSTASH_FLAGS],[
 135if test -n "$1"; then
 136   CPPFLAGS="$old_CPPFLAGS"
 137   LDFLAGS="$old_LDFLAGS"
 138fi
 139])
 140
 141## Configure body starts here.
 142
 143AC_PREREQ(2.59)
 144AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org])
 145
 146AC_CONFIG_SRCDIR([git.c])
 147
 148config_file=config.mak.autogen
 149config_in=config.mak.in
 150
 151# Directories holding "saner" versions of common or POSIX binaries.
 152AC_ARG_WITH([sane-tool-path],
 153  [AS_HELP_STRING(
 154    [--with-sane-tool-path=DIR-1[[:DIR-2...:DIR-n]]],
 155    [Directories to prepend to PATH in build system and generated scripts])],
 156  [if test "$withval" = "no"; then
 157    withval=''
 158  else
 159    AC_MSG_NOTICE([Setting SANE_TOOL_PATH to '$withval'])
 160  fi
 161  GIT_CONF_SUBST([SANE_TOOL_PATH], [$withval])],
 162  [# If the "--with-sane-tool-path" option was not given, don't touch
 163   # SANE_TOOL_PATH here, but let defaults in Makefile take care of it.
 164   # This should minimize spurious differences in the behaviour of the
 165   # Git build system when configure is used w.r.t. when it is not.
 166   :])
 167
 168## Site configuration related to programs (before tests)
 169## --with-PACKAGE[=ARG] and --without-PACKAGE
 170#
 171# Set lib to alternative name of lib directory (e.g. lib64)
 172AC_ARG_WITH([lib],
 173 [AS_HELP_STRING([--with-lib=ARG],
 174                 [ARG specifies alternative name for lib directory])],
 175 [if test "$withval" = "no" || test "$withval" = "yes"; then
 176        AC_MSG_WARN([You should provide name for --with-lib=ARG])
 177  else
 178        lib=$withval
 179        AC_MSG_NOTICE([Setting lib to '$lib'])
 180        GIT_CONF_SUBST([lib], [$withval])
 181  fi])
 182
 183if test -z "$lib"; then
 184   AC_MSG_NOTICE([Setting lib to 'lib' (the default)])
 185   lib=lib
 186fi
 187
 188AC_ARG_ENABLE([pthreads],
 189 [AS_HELP_STRING([--enable-pthreads=FLAGS],
 190  [FLAGS is the value to pass to the compiler to enable POSIX Threads.]
 191  [The default if FLAGS is not specified is to try first -pthread]
 192  [and then -lpthread.]
 193  [--without-pthreads will disable threading.])],
 194[
 195if test "x$enableval" = "xyes"; then
 196   AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads])
 197elif test "x$enableval" != "xno"; then
 198   PTHREAD_CFLAGS=$enableval
 199   AC_MSG_NOTICE([Setting '$PTHREAD_CFLAGS' as the FLAGS to enable POSIX Threads])
 200else
 201   AC_MSG_NOTICE([POSIX Threads will be disabled.])
 202   NO_PTHREADS=YesPlease
 203   USER_NOPTHREAD=1
 204fi],
 205[
 206   AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads.])
 207])
 208
 209# Define option to enable JavaScript minification
 210AC_ARG_ENABLE([jsmin],
 211[AS_HELP_STRING([--enable-jsmin=PATH],
 212  [PATH is the name of a JavaScript minifier or the absolute path to one.])],
 213[
 214  JSMIN=$enableval;
 215  AC_MSG_NOTICE([Setting JSMIN to '$JSMIN' to enable JavaScript minifying])
 216  GIT_CONF_SUBST([JSMIN], [$enableval])
 217])
 218
 219# Define option to enable CSS minification
 220AC_ARG_ENABLE([cssmin],
 221[AS_HELP_STRING([--enable-cssmin=PATH],
 222  [PATH is the name of a CSS minifier or the absolute path to one.])],
 223[
 224  CSSMIN=$enableval;
 225  AC_MSG_NOTICE([Setting CSSMIN to '$CSSMIN' to enable CSS minifying])
 226  GIT_CONF_SUBST([CSSMIN], [$enableval])
 227])
 228
 229## Site configuration (override autodetection)
 230## --with-PACKAGE[=ARG] and --without-PACKAGE
 231AC_MSG_NOTICE([CHECKS for site configuration])
 232#
 233# Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
 234# tests.  These tests take up a significant amount of the total test time
 235# but are not needed unless you plan to talk to SVN repos.
 236#
 237# Define PPC_SHA1 environment variable when running make to make use of
 238# a bundled SHA1 routine optimized for PowerPC.
 239#
 240# Define NO_OPENSSL environment variable if you do not have OpenSSL.
 241# This also implies BLK_SHA1.
 242#
 243# Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
 244# /foo/bar/include and /foo/bar/lib directories.
 245AC_ARG_WITH(openssl,
 246AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
 247AS_HELP_STRING([],              [ARG can be prefix for openssl library and headers]),
 248GIT_PARSE_WITH([openssl]))
 249
 250# Define USE_LIBPCRE if you have and want to use libpcre. git-grep will be
 251# able to use Perl-compatible regular expressions.
 252#
 253# Define LIBPCREDIR=/foo/bar if your libpcre header and library files are in
 254# /foo/bar/include and /foo/bar/lib directories.
 255#
 256AC_ARG_WITH(libpcre,
 257AS_HELP_STRING([--with-libpcre],[support Perl-compatible regexes (default is NO)])
 258AS_HELP_STRING([],           [ARG can be also prefix for libpcre library and headers]),
 259    if test "$withval" = "no"; then
 260        USE_LIBPCRE=
 261    elif test "$withval" = "yes"; then
 262        USE_LIBPCRE=YesPlease
 263    else
 264        USE_LIBPCRE=YesPlease
 265        LIBPCREDIR=$withval
 266        AC_MSG_NOTICE([Setting LIBPCREDIR to $withval])
 267        GIT_CONF_SUBST([LIBPCREDIR], [$withval])
 268    fi)
 269#
 270# Define NO_CURL if you do not have curl installed.  git-http-pull and
 271# git-http-push are not built, and you cannot use http:// and https://
 272# transports.
 273#
 274# Define CURLDIR=/foo/bar if your curl header and library files are in
 275# /foo/bar/include and /foo/bar/lib directories.
 276AC_ARG_WITH(curl,
 277AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
 278AS_HELP_STRING([],           [ARG can be also prefix for curl library and headers]),
 279GIT_PARSE_WITH(curl))
 280#
 281# Define NO_EXPAT if you do not have expat installed.  git-http-push is
 282# not built, and you cannot push using http:// and https:// transports.
 283#
 284# Define EXPATDIR=/foo/bar if your expat header and library files are in
 285# /foo/bar/include and /foo/bar/lib directories.
 286AC_ARG_WITH(expat,
 287AS_HELP_STRING([--with-expat],
 288[support git-push using http:// and https:// transports via WebDAV (default is YES)])
 289AS_HELP_STRING([],            [ARG can be also prefix for expat library and headers]),
 290GIT_PARSE_WITH(expat))
 291#
 292# Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
 293# installed in /sw, but don't want GIT to link against any libraries
 294# installed there.  If defined you may specify your own (or Fink's)
 295# include directories and library directories by defining CFLAGS
 296# and LDFLAGS appropriately.
 297#
 298# Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
 299# have DarwinPorts installed in /opt/local, but don't want GIT to
 300# link against any libraries installed there.  If defined you may
 301# specify your own (or DarwinPort's) include directories and
 302# library directories by defining CFLAGS and LDFLAGS appropriately.
 303#
 304# Define NO_MMAP if you want to avoid mmap.
 305#
 306# Define NO_ICONV if your libc does not properly support iconv.
 307AC_ARG_WITH(iconv,
 308AS_HELP_STRING([--without-iconv],
 309[if your architecture doesn't properly support iconv])
 310AS_HELP_STRING([--with-iconv=PATH],
 311[PATH is prefix for libiconv library and headers])
 312AS_HELP_STRING([],
 313[used only if you need linking with libiconv]),
 314GIT_PARSE_WITH(iconv))
 315
 316## --enable-FEATURE[=ARG] and --disable-FEATURE
 317#
 318# Define USE_NSEC below if you want git to care about sub-second file mtimes
 319# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
 320# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
 321# randomly break unless your underlying filesystem supports those sub-second
 322# times (my ext3 doesn't).
 323#
 324# Define USE_STDEV below if you want git to care about the underlying device
 325# change being considered an inode change from the update-index perspective.
 326
 327#
 328# Allow user to set ETC_GITCONFIG variable
 329GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG,
 330                        Use VALUE instead of /etc/gitconfig as the
 331                        global git configuration file.
 332                        If VALUE is not fully qualified it will be interpreted
 333                        as a path relative to the computed prefix at runtime.)
 334
 335#
 336# Allow user to set ETC_GITATTRIBUTES variable
 337GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES,
 338                        Use VALUE instead of /etc/gitattributes as the
 339                        global git attributes file.
 340                        If VALUE is not fully qualified it will be interpreted
 341                        as a path relative to the computed prefix at runtime.)
 342
 343#
 344# Allow user to set the default pager
 345GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER,
 346                        Use VALUE as the fall-back pager instead of 'less'.
 347                        This is used by things like 'git log' when the user
 348                        does not specify a pager to use through alternate
 349                        methods. eg: /usr/bin/pager)
 350#
 351# Allow user to set the default editor
 352GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR,
 353                        Use VALUE as the fall-back editor instead of 'vi'.
 354                        This is used by things like 'git commit' when the user
 355                        does not specify a preferred editor through other
 356                        methods. eg: /usr/bin/editor)
 357
 358#
 359# Define SHELL_PATH to provide path to shell.
 360GIT_ARG_SET_PATH(shell)
 361#
 362# Define PERL_PATH to provide path to Perl.
 363GIT_ARG_SET_PATH(perl)
 364#
 365# Define PYTHON_PATH to provide path to Python.
 366GIT_ARG_SET_PATH(python, allow-without)
 367#
 368# Define ZLIB_PATH to provide path to zlib.
 369GIT_ARG_SET_PATH(zlib)
 370#
 371# Declare the with-tcltk/without-tcltk options.
 372AC_ARG_WITH(tcltk,
 373AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
 374AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
 375AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
 376AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),
 377GIT_PARSE_WITH(tcltk))
 378#
 379
 380
 381## Checks for programs.
 382AC_MSG_NOTICE([CHECKS for programs])
 383#
 384AC_PROG_CC([cc gcc])
 385AC_C_INLINE
 386case $ac_cv_c_inline in
 387  inline | yes | no)    ;;
 388  *)                    AC_SUBST([INLINE], [$ac_cv_c_inline]) ;;
 389esac
 390
 391# which switch to pass runtime path to dynamic libraries to the linker
 392AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [
 393   SAVE_LDFLAGS="${LDFLAGS}"
 394   LDFLAGS="${SAVE_LDFLAGS} -R /"
 395   AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no])
 396   LDFLAGS="${SAVE_LDFLAGS}"
 397])
 398if test "$git_cv_ld_dashr" = "yes"; then
 399   AC_SUBST(CC_LD_DYNPATH, [-R])
 400else
 401   AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [
 402      SAVE_LDFLAGS="${LDFLAGS}"
 403      LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/"
 404      AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no])
 405      LDFLAGS="${SAVE_LDFLAGS}"
 406   ])
 407   if test "$git_cv_ld_wl_rpath" = "yes"; then
 408      AC_SUBST(CC_LD_DYNPATH, [-Wl,-rpath,])
 409   else
 410      AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [
 411         SAVE_LDFLAGS="${LDFLAGS}"
 412         LDFLAGS="${SAVE_LDFLAGS} -rpath /"
 413         AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no])
 414         LDFLAGS="${SAVE_LDFLAGS}"
 415      ])
 416      if test "$git_cv_ld_rpath" = "yes"; then
 417         AC_SUBST(CC_LD_DYNPATH, [-rpath])
 418      else
 419         AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
 420      fi
 421   fi
 422fi
 423#AC_PROG_INSTALL                # needs install-sh or install.sh in sources
 424AC_CHECK_TOOLS(AR, [gar ar], :)
 425AC_CHECK_PROGS(TAR, [gtar tar])
 426AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff])
 427# TCLTK_PATH will be set to some value if we want Tcl/Tk
 428# or will be empty otherwise.
 429if test -z "$NO_TCLTK"; then
 430  if test "$with_tcltk" = ""; then
 431  # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
 432    TCLTK_PATH=wish
 433    AC_SUBST(TCLTK_PATH)
 434  elif test "$with_tcltk" = "yes"; then
 435  # Tcl/Tk check requested.
 436    AC_CHECK_PROGS(TCLTK_PATH, [wish], )
 437  else
 438    AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
 439    TCLTK_PATH="$with_tcltk"
 440    AC_SUBST(TCLTK_PATH)
 441  fi
 442fi
 443AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
 444if test -n "$ASCIIDOC"; then
 445        AC_MSG_CHECKING([for asciidoc version])
 446        asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
 447        case "${asciidoc_version}" in
 448        asciidoc' '8*)
 449                AC_MSG_RESULT([${asciidoc_version}])
 450                ;;
 451        *)
 452                AC_MSG_RESULT([${asciidoc_version} (unknown)])
 453                ;;
 454        esac
 455fi
 456
 457
 458## Checks for libraries.
 459AC_MSG_NOTICE([CHECKS for libraries])
 460#
 461# Define NO_OPENSSL environment variable if you do not have OpenSSL.
 462# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
 463
 464GIT_STASH_FLAGS($OPENSSLDIR)
 465
 466AC_CHECK_LIB([crypto], [SHA1_Init],
 467[NEEDS_SSL_WITH_CRYPTO=],
 468[AC_CHECK_LIB([ssl], [SHA1_Init],
 469 [NEEDS_SSL_WITH_CRYPTO=YesPlease],
 470 [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])])
 471
 472GIT_UNSTASH_FLAGS($OPENSSLDIR)
 473
 474AC_SUBST(NEEDS_SSL_WITH_CRYPTO)
 475AC_SUBST(NO_OPENSSL)
 476
 477#
 478# Define USE_LIBPCRE if you have and want to use libpcre. git-grep will be
 479# able to use Perl-compatible regular expressions.
 480#
 481
 482if test -n "$USE_LIBPCRE"; then
 483
 484GIT_STASH_FLAGS($LIBPCREDIR)
 485
 486AC_CHECK_LIB([pcre], [pcre_version],
 487[USE_LIBPCRE=YesPlease],
 488[USE_LIBPCRE=])
 489
 490GIT_UNSTASH_FLAGS($LIBPCREDIR)
 491
 492AC_SUBST(USE_LIBPCRE)
 493
 494fi
 495
 496#
 497# Define NO_CURL if you do not have libcurl installed.  git-http-pull and
 498# git-http-push are not built, and you cannot use http:// and https://
 499# transports.
 500
 501GIT_STASH_FLAGS($CURLDIR)
 502
 503AC_CHECK_LIB([curl], [curl_global_init],
 504[NO_CURL=],
 505[NO_CURL=YesPlease])
 506
 507GIT_UNSTASH_FLAGS($CURLDIR)
 508
 509AC_SUBST(NO_CURL)
 510
 511#
 512# Define NO_EXPAT if you do not have expat installed.  git-http-push is
 513# not built, and you cannot push using http:// and https:// transports.
 514
 515GIT_STASH_FLAGS($EXPATDIR)
 516
 517AC_CHECK_LIB([expat], [XML_ParserCreate],
 518[NO_EXPAT=],
 519[NO_EXPAT=YesPlease])
 520
 521GIT_UNSTASH_FLAGS($EXPATDIR)
 522
 523AC_SUBST(NO_EXPAT)
 524
 525#
 526# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
 527# some Solaris installations).
 528# Define NO_ICONV if neither libc nor libiconv support iconv.
 529
 530if test -z "$NO_ICONV"; then
 531
 532GIT_STASH_FLAGS($ICONVDIR)
 533
 534AC_DEFUN([ICONVTEST_SRC],
 535[AC_LANG_PROGRAM([#include <iconv.h>],
 536 [iconv_open("", "");])])
 537
 538if test -n "$ICONVDIR"; then
 539   lib_order="-liconv -lc"
 540else
 541   lib_order="-lc -liconv"
 542fi
 543
 544NO_ICONV=YesPlease
 545
 546for l in $lib_order; do
 547    if test "$l" = "-liconv"; then
 548       NEEDS_LIBICONV=YesPlease
 549    else
 550       NEEDS_LIBICONV=
 551    fi
 552
 553    old_LIBS="$LIBS"
 554    LIBS="$LIBS $l"
 555    AC_MSG_CHECKING([for iconv in $l])
 556    AC_LINK_IFELSE([ICONVTEST_SRC],
 557        [AC_MSG_RESULT([yes])
 558        NO_ICONV=
 559        break],
 560        [AC_MSG_RESULT([no])])
 561    LIBS="$old_LIBS"
 562done
 563
 564#in case of break
 565LIBS="$old_LIBS"
 566
 567GIT_UNSTASH_FLAGS($ICONVDIR)
 568
 569AC_SUBST(NEEDS_LIBICONV)
 570AC_SUBST(NO_ICONV)
 571
 572if test -n "$NO_ICONV"; then
 573    NEEDS_LIBICONV=
 574fi
 575
 576fi
 577
 578#
 579# Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
 580
 581GIT_STASH_FLAGS($ZLIB_PATH)
 582
 583AC_DEFUN([ZLIBTEST_SRC], [
 584AC_LANG_PROGRAM([#include <zlib.h>],
 585 [deflateBound(0, 0);])])
 586AC_MSG_CHECKING([for deflateBound in -lz])
 587old_LIBS="$LIBS"
 588LIBS="$LIBS -lz"
 589AC_LINK_IFELSE([ZLIBTEST_SRC],
 590        [AC_MSG_RESULT([yes])],
 591        [AC_MSG_RESULT([no])
 592        NO_DEFLATE_BOUND=yes])
 593LIBS="$old_LIBS"
 594
 595GIT_UNSTASH_FLAGS($ZLIB_PATH)
 596
 597AC_SUBST(NO_DEFLATE_BOUND)
 598
 599#
 600# Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
 601# Patrick Mauritz).
 602AC_CHECK_LIB([c], [socket],
 603[NEEDS_SOCKET=],
 604[NEEDS_SOCKET=YesPlease])
 605AC_SUBST(NEEDS_SOCKET)
 606test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
 607
 608#
 609# The next few tests will define NEEDS_RESOLV if linking with
 610# libresolv provides some of the functions we would normally get
 611# from libc.
 612NEEDS_RESOLV=
 613AC_SUBST(NEEDS_RESOLV)
 614#
 615# Define NO_INET_NTOP if linking with -lresolv is not enough.
 616# Solaris 2.7 in particular hos inet_ntop in -lresolv.
 617NO_INET_NTOP=
 618AC_SUBST(NO_INET_NTOP)
 619AC_CHECK_FUNC([inet_ntop],
 620        [],
 621    [AC_CHECK_LIB([resolv], [inet_ntop],
 622            [NEEDS_RESOLV=YesPlease],
 623        [NO_INET_NTOP=YesPlease])
 624])
 625#
 626# Define NO_INET_PTON if linking with -lresolv is not enough.
 627# Solaris 2.7 in particular hos inet_pton in -lresolv.
 628NO_INET_PTON=
 629AC_SUBST(NO_INET_PTON)
 630AC_CHECK_FUNC([inet_pton],
 631        [],
 632    [AC_CHECK_LIB([resolv], [inet_pton],
 633            [NEEDS_RESOLV=YesPlease],
 634        [NO_INET_PTON=YesPlease])
 635])
 636#
 637# Define NO_HSTRERROR if linking with -lresolv is not enough.
 638# Solaris 2.6 in particular has no hstrerror, even in -lresolv.
 639NO_HSTRERROR=
 640AC_CHECK_FUNC([hstrerror],
 641        [],
 642    [AC_CHECK_LIB([resolv], [hstrerror],
 643            [NEEDS_RESOLV=YesPlease],
 644        [NO_HSTRERROR=YesPlease])
 645])
 646AC_SUBST(NO_HSTRERROR)
 647#
 648# If any of the above tests determined that -lresolv is needed at
 649# build-time, also set it here for remaining configure-time checks.
 650test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv"
 651
 652AC_CHECK_LIB([c], [basename],
 653[NEEDS_LIBGEN=],
 654[NEEDS_LIBGEN=YesPlease])
 655AC_SUBST(NEEDS_LIBGEN)
 656test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen"
 657
 658AC_CHECK_LIB([c], [gettext],
 659[LIBC_CONTAINS_LIBINTL=YesPlease],
 660[LIBC_CONTAINS_LIBINTL=])
 661AC_SUBST(LIBC_CONTAINS_LIBINTL)
 662
 663#
 664# Define NO_GETTEXT if you don't want Git output to be translated.
 665# A translated Git requires GNU libintl or another gettext implementation
 666AC_CHECK_HEADER([libintl.h],
 667[NO_GETTEXT=],
 668[NO_GETTEXT=YesPlease])
 669AC_SUBST(NO_GETTEXT)
 670
 671if test -z "$NO_GETTEXT"; then
 672    test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl"
 673fi
 674
 675## Checks for header files.
 676AC_MSG_NOTICE([CHECKS for header files])
 677#
 678# Define NO_SYS_SELECT_H if you don't have sys/select.h.
 679AC_CHECK_HEADER([sys/select.h],
 680[NO_SYS_SELECT_H=],
 681[NO_SYS_SELECT_H=UnfortunatelyYes])
 682AC_SUBST(NO_SYS_SELECT_H)
 683#
 684# Define NO_SYS_POLL_H if you don't have sys/poll.h
 685AC_CHECK_HEADER([sys/poll.h],
 686[NO_SYS_POLL_H=],
 687[NO_SYS_POLL_H=UnfortunatelyYes])
 688AC_SUBST(NO_SYS_POLL_H)
 689#
 690# Define NO_INTTYPES_H if you don't have inttypes.h
 691AC_CHECK_HEADER([inttypes.h],
 692[NO_INTTYPES_H=],
 693[NO_INTTYPES_H=UnfortunatelyYes])
 694AC_SUBST(NO_INTTYPES_H)
 695#
 696# Define OLD_ICONV if your library has an old iconv(), where the second
 697# (input buffer pointer) parameter is declared with type (const char **).
 698AC_DEFUN([OLDICONVTEST_SRC], [
 699AC_LANG_PROGRAM([[
 700#include <iconv.h>
 701
 702extern size_t iconv(iconv_t cd,
 703                    char **inbuf, size_t *inbytesleft,
 704                    char **outbuf, size_t *outbytesleft);
 705]], [])])
 706
 707GIT_STASH_FLAGS($ICONVDIR)
 708
 709AC_MSG_CHECKING([for old iconv()])
 710AC_COMPILE_IFELSE([OLDICONVTEST_SRC],
 711        [AC_MSG_RESULT([no])],
 712        [AC_MSG_RESULT([yes])
 713        OLD_ICONV=UnfortunatelyYes])
 714
 715GIT_UNSTASH_FLAGS($ICONVDIR)
 716
 717AC_SUBST(OLD_ICONV)
 718
 719## Checks for typedefs, structures, and compiler characteristics.
 720AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
 721#
 722TYPE_SOCKLEN_T
 723case $ac_cv_type_socklen_t in
 724  yes)  ;;
 725  *)    AC_SUBST([SOCKLEN_T], [$git_cv_socklen_t_equiv]) ;;
 726esac
 727
 728# Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
 729AC_CHECK_MEMBER(struct dirent.d_ino,
 730[NO_D_INO_IN_DIRENT=],
 731[NO_D_INO_IN_DIRENT=YesPlease],
 732[#include <dirent.h>])
 733AC_SUBST(NO_D_INO_IN_DIRENT)
 734#
 735# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
 736# d_type in struct dirent (latest Cygwin -- will be fixed soonish).
 737AC_CHECK_MEMBER(struct dirent.d_type,
 738[NO_D_TYPE_IN_DIRENT=],
 739[NO_D_TYPE_IN_DIRENT=YesPlease],
 740[#include <dirent.h>])
 741AC_SUBST(NO_D_TYPE_IN_DIRENT)
 742#
 743# Define NO_SOCKADDR_STORAGE if your platform does not have struct
 744# sockaddr_storage.
 745AC_CHECK_TYPE(struct sockaddr_storage,
 746[NO_SOCKADDR_STORAGE=],
 747[NO_SOCKADDR_STORAGE=YesPlease],[
 748#include <sys/types.h>
 749#include <sys/socket.h>
 750])
 751AC_SUBST(NO_SOCKADDR_STORAGE)
 752#
 753# Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
 754AC_CHECK_TYPE([struct addrinfo],[
 755 GIT_CHECK_FUNC([getaddrinfo],
 756  [NO_IPV6=],
 757  [NO_IPV6=YesPlease])
 758],[NO_IPV6=YesPlease],[
 759#include <sys/types.h>
 760#include <sys/socket.h>
 761#include <netdb.h>
 762])
 763AC_SUBST(NO_IPV6)
 764#
 765# Define NO_REGEX if you have no or inferior regex support in your C library.
 766AC_CACHE_CHECK([whether the platform regex can handle null bytes],
 767 [ac_cv_c_excellent_regex], [
 768AC_EGREP_CPP(yippeeyeswehaveit,
 769        AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
 770#include <regex.h>
 771],
 772[#ifdef REG_STARTEND
 773yippeeyeswehaveit
 774#endif
 775]),
 776        [ac_cv_c_excellent_regex=yes],
 777        [ac_cv_c_excellent_regex=no])
 778])
 779if test $ac_cv_c_excellent_regex = yes; then
 780        NO_REGEX=
 781else
 782        NO_REGEX=YesPlease
 783fi
 784AC_SUBST(NO_REGEX)
 785#
 786# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
 787# when attempting to read from an fopen'ed directory.
 788AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
 789 [ac_cv_fread_reads_directories],
 790[
 791AC_RUN_IFELSE(
 792        [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
 793                [[char c;
 794                FILE *f = fopen(".", "r");
 795                return f && fread(&c, 1, 1, f)]])],
 796        [ac_cv_fread_reads_directories=no],
 797        [ac_cv_fread_reads_directories=yes])
 798])
 799if test $ac_cv_fread_reads_directories = yes; then
 800        FREAD_READS_DIRECTORIES=UnfortunatelyYes
 801else
 802        FREAD_READS_DIRECTORIES=
 803fi
 804AC_SUBST(FREAD_READS_DIRECTORIES)
 805#
 806# Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
 807# or vsnprintf() return -1 instead of number of characters which would
 808# have been written to the final string if enough space had been available.
 809AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
 810 [ac_cv_snprintf_returns_bogus],
 811[
 812AC_RUN_IFELSE(
 813        [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
 814                #include "stdarg.h"
 815
 816                int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
 817                {
 818                  int ret;
 819                  va_list ap;
 820                  va_start(ap, format);
 821                  ret = vsnprintf(str, maxsize, format, ap);
 822                  va_end(ap);
 823                  return ret;
 824                }],
 825                [[char buf[6];
 826                  if (test_vsnprintf(buf, 3, "%s", "12345") != 5
 827                      || strcmp(buf, "12")) return 1;
 828                  if (snprintf(buf, 3, "%s", "12345") != 5
 829                      || strcmp(buf, "12")) return 1]])],
 830        [ac_cv_snprintf_returns_bogus=no],
 831        [ac_cv_snprintf_returns_bogus=yes])
 832])
 833if test $ac_cv_snprintf_returns_bogus = yes; then
 834        SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
 835else
 836        SNPRINTF_RETURNS_BOGUS=
 837fi
 838AC_SUBST(SNPRINTF_RETURNS_BOGUS)
 839
 840
 841## Checks for library functions.
 842## (in default C library and libraries checked by AC_CHECK_LIB)
 843AC_MSG_NOTICE([CHECKS for library functions])
 844#
 845# Define NO_LIBGEN_H if you don't have libgen.h.
 846AC_CHECK_HEADER([libgen.h],
 847[NO_LIBGEN_H=],
 848[NO_LIBGEN_H=YesPlease])
 849AC_SUBST(NO_LIBGEN_H)
 850#
 851# Define HAVE_PATHS_H if you have paths.h.
 852AC_CHECK_HEADER([paths.h],
 853[HAVE_PATHS_H=YesPlease],
 854[HAVE_PATHS_H=])
 855AC_SUBST(HAVE_PATHS_H)
 856#
 857# Define HAVE_LIBCHARSET_H if have libcharset.h
 858AC_CHECK_HEADER([libcharset.h],
 859[HAVE_LIBCHARSET_H=YesPlease],
 860[HAVE_LIBCHARSET_H=])
 861AC_SUBST(HAVE_LIBCHARSET_H)
 862# Define CHARSET_LIB if libiconv does not export the locale_charset symbol
 863# and libcharset does
 864CHARSET_LIB=
 865AC_CHECK_LIB([iconv], [locale_charset],
 866       [],
 867       [AC_CHECK_LIB([charset], [locale_charset],
 868                     [CHARSET_LIB=-lcharset])
 869       ]
 870)
 871AC_SUBST(CHARSET_LIB)
 872#
 873# Define NO_STRCASESTR if you don't have strcasestr.
 874GIT_CHECK_FUNC(strcasestr,
 875[NO_STRCASESTR=],
 876[NO_STRCASESTR=YesPlease])
 877AC_SUBST(NO_STRCASESTR)
 878#
 879# Define NO_STRTOK_R if you don't have strtok_r
 880GIT_CHECK_FUNC(strtok_r,
 881[NO_STRTOK_R=],
 882[NO_STRTOK_R=YesPlease])
 883AC_SUBST(NO_STRTOK_R)
 884#
 885# Define NO_FNMATCH if you don't have fnmatch
 886GIT_CHECK_FUNC(fnmatch,
 887[NO_FNMATCH=],
 888[NO_FNMATCH=YesPlease])
 889AC_SUBST(NO_FNMATCH)
 890#
 891# Define NO_FNMATCH_CASEFOLD if your fnmatch function doesn't have the
 892# FNM_CASEFOLD GNU extension.
 893AC_CACHE_CHECK([whether the fnmatch function supports the FNMATCH_CASEFOLD GNU extension],
 894 [ac_cv_c_excellent_fnmatch], [
 895AC_EGREP_CPP(yippeeyeswehaveit,
 896        AC_LANG_PROGRAM([
 897#include <fnmatch.h>
 898],
 899[#ifdef FNM_CASEFOLD
 900yippeeyeswehaveit
 901#endif
 902]),
 903        [ac_cv_c_excellent_fnmatch=yes],
 904        [ac_cv_c_excellent_fnmatch=no])
 905])
 906if test $ac_cv_c_excellent_fnmatch = yes; then
 907        NO_FNMATCH_CASEFOLD=
 908else
 909        NO_FNMATCH_CASEFOLD=YesPlease
 910fi
 911AC_SUBST(NO_FNMATCH_CASEFOLD)
 912#
 913# Define NO_MEMMEM if you don't have memmem.
 914GIT_CHECK_FUNC(memmem,
 915[NO_MEMMEM=],
 916[NO_MEMMEM=YesPlease])
 917AC_SUBST(NO_MEMMEM)
 918#
 919# Define NO_STRLCPY if you don't have strlcpy.
 920GIT_CHECK_FUNC(strlcpy,
 921[NO_STRLCPY=],
 922[NO_STRLCPY=YesPlease])
 923AC_SUBST(NO_STRLCPY)
 924#
 925# Define NO_UINTMAX_T if your platform does not have uintmax_t
 926AC_CHECK_TYPE(uintmax_t,
 927[NO_UINTMAX_T=],
 928[NO_UINTMAX_T=YesPlease],[
 929#include <inttypes.h>
 930])
 931AC_SUBST(NO_UINTMAX_T)
 932#
 933# Define NO_STRTOUMAX if you don't have strtoumax in the C library.
 934GIT_CHECK_FUNC(strtoumax,
 935[NO_STRTOUMAX=],
 936[NO_STRTOUMAX=YesPlease])
 937AC_SUBST(NO_STRTOUMAX)
 938#
 939# Define NO_SETENV if you don't have setenv in the C library.
 940GIT_CHECK_FUNC(setenv,
 941[NO_SETENV=],
 942[NO_SETENV=YesPlease])
 943AC_SUBST(NO_SETENV)
 944#
 945# Define NO_UNSETENV if you don't have unsetenv in the C library.
 946GIT_CHECK_FUNC(unsetenv,
 947[NO_UNSETENV=],
 948[NO_UNSETENV=YesPlease])
 949AC_SUBST(NO_UNSETENV)
 950#
 951# Define NO_MKDTEMP if you don't have mkdtemp in the C library.
 952GIT_CHECK_FUNC(mkdtemp,
 953[NO_MKDTEMP=],
 954[NO_MKDTEMP=YesPlease])
 955AC_SUBST(NO_MKDTEMP)
 956#
 957# Define NO_MKSTEMPS if you don't have mkstemps in the C library.
 958GIT_CHECK_FUNC(mkstemps,
 959[NO_MKSTEMPS=],
 960[NO_MKSTEMPS=YesPlease])
 961AC_SUBST(NO_MKSTEMPS)
 962#
 963# Define NO_INITGROUPS if you don't have initgroups in the C library.
 964GIT_CHECK_FUNC(initgroups,
 965[NO_INITGROUPS=],
 966[NO_INITGROUPS=YesPlease])
 967AC_SUBST(NO_INITGROUPS)
 968#
 969#
 970# Define NO_MMAP if you want to avoid mmap.
 971#
 972# Define NO_ICONV if your libc does not properly support iconv.
 973
 974
 975## Other checks.
 976# Define USE_PIC if you need the main git objects to be built with -fPIC
 977# in order to build and link perl/Git.so.  x86-64 seems to need this.
 978#
 979# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
 980# Enable it on Windows.  By default, symrefs are still used.
 981#
 982# Define NO_PTHREADS if we do not have pthreads.
 983#
 984# Define PTHREAD_LIBS to the linker flag used for Pthread support.
 985AC_DEFUN([PTHREADTEST_SRC], [
 986AC_LANG_PROGRAM([[
 987#include <pthread.h>
 988]], [[
 989        pthread_mutex_t test_mutex;
 990        pthread_key_t test_key;
 991        int retcode = 0;
 992        retcode |= pthread_key_create(&test_key, (void *)0);
 993        retcode |= pthread_mutex_init(&test_mutex,(void *)0);
 994        retcode |= pthread_mutex_lock(&test_mutex);
 995        retcode |= pthread_mutex_unlock(&test_mutex);
 996        return retcode;
 997]])])
 998
 999dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(
1000dnl   [[#include <pthread.h>]],
1001dnl   [[pthread_mutex_t test_mutex;]]
1002dnl )])
1003
1004NO_PTHREADS=UnfortunatelyYes
1005PTHREAD_LIBS=
1006
1007if test -n "$USER_NOPTHREAD"; then
1008   AC_MSG_NOTICE([Skipping POSIX Threads at user request.])
1009# handle these separately since PTHREAD_CFLAGS could be '-lpthreads
1010# -D_REENTRANT' or some such.
1011elif test -z "$PTHREAD_CFLAGS"; then
1012  threads_found=no
1013  for opt in -mt -pthread -lpthread; do
1014     old_CFLAGS="$CFLAGS"
1015     CFLAGS="$opt $CFLAGS"
1016     AC_MSG_CHECKING([Checking for POSIX Threads with '$opt'])
1017     AC_LINK_IFELSE([PTHREADTEST_SRC],
1018        [AC_MSG_RESULT([yes])
1019                NO_PTHREADS=
1020                PTHREAD_LIBS="$opt"
1021                PTHREAD_CFLAGS="$opt"
1022                threads_found=yes
1023                break
1024        ],
1025        [AC_MSG_RESULT([no])])
1026      CFLAGS="$old_CFLAGS"
1027  done
1028  if test $threads_found != yes; then
1029    AC_CHECK_LIB([pthread], [pthread_create],
1030        [PTHREAD_LIBS="-lpthread"],
1031        [NO_PTHREADS=UnfortunatelyYes])
1032  fi
1033else
1034  old_CFLAGS="$CFLAGS"
1035  CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
1036  AC_MSG_CHECKING([Checking for POSIX Threads with '$PTHREAD_CFLAGS'])
1037  AC_LINK_IFELSE([PTHREADTEST_SRC],
1038        [AC_MSG_RESULT([yes])
1039                NO_PTHREADS=
1040                PTHREAD_LIBS="$PTHREAD_CFLAGS"
1041        ],
1042        [AC_MSG_RESULT([no])])
1043
1044  CFLAGS="$old_CFLAGS"
1045fi
1046
1047CFLAGS="$old_CFLAGS"
1048
1049AC_SUBST(PTHREAD_CFLAGS)
1050AC_SUBST(PTHREAD_LIBS)
1051AC_SUBST(NO_PTHREADS)
1052
1053## Output files
1054AC_CONFIG_FILES(["${config_file}":"${config_in}"])
1055AC_OUTPUT