configure.acon commit Merge branch 'jc/parseopt-expiry-errors' (3915f9a)
   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 "$lib"; then
 187   AC_MSG_NOTICE([Setting lib to 'lib' (the default)])
 188   lib=lib
 189fi
 190
 191AC_ARG_ENABLE([pthreads],
 192 [AS_HELP_STRING([--enable-pthreads=FLAGS],
 193  [FLAGS is the value to pass to the compiler to enable POSIX Threads.]
 194  [The default if FLAGS is not specified is to try first -pthread]
 195  [and then -lpthread.]
 196  [--disable-pthreads will disable threading.])],
 197[
 198if test "x$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 '$CSSMIN' to enable CSS minifying])
 229  GIT_CONF_SUBST([CSSMIN])
 230])
 231
 232## Site configuration (override autodetection)
 233## --with-PACKAGE[=ARG] and --without-PACKAGE
 234AC_MSG_NOTICE([CHECKS for site configuration])
 235#
 236# Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
 237# tests.  These tests take up a significant amount of the total test time
 238# but are not needed unless you plan to talk to SVN repos.
 239#
 240# Define PPC_SHA1 environment variable when running make to make use of
 241# a bundled SHA1 routine optimized for PowerPC.
 242#
 243# Define NO_OPENSSL environment variable if you do not have OpenSSL.
 244#
 245# Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
 246# /foo/bar/include and /foo/bar/lib directories.
 247AC_ARG_WITH(openssl,
 248AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
 249AS_HELP_STRING([],              [ARG can be prefix for openssl library and headers]),
 250GIT_PARSE_WITH([openssl]))
 251
 252# Define USE_LIBPCRE if you have and want to use libpcre. Various
 253# commands such as log and grep offer runtime options to use
 254# Perl-compatible regular expressions instead of standard or extended
 255# POSIX regular expressions.
 256#
 257# USE_LIBPCRE is a synonym for USE_LIBPCRE2, define USE_LIBPCRE1
 258# instead if you'd like to use the legacy version 1 of the PCRE
 259# library. Support for version 1 will likely be removed in some future
 260# release of Git, as upstream has all but abandoned it.
 261#
 262# Define LIBPCREDIR=/foo/bar if your PCRE header and library files are in
 263# /foo/bar/include and /foo/bar/lib directories.
 264#
 265AC_ARG_WITH(libpcre,
 266AS_HELP_STRING([--with-libpcre],[synonym for --with-libpcre2]),
 267    if test "$withval" = "no"; then
 268        USE_LIBPCRE2=
 269    elif test "$withval" = "yes"; then
 270        USE_LIBPCRE2=YesPlease
 271    else
 272        USE_LIBPCRE2=YesPlease
 273        LIBPCREDIR=$withval
 274        AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
 275        dnl USE_LIBPCRE2 can still be modified below, so don't substitute
 276        dnl it yet.
 277        GIT_CONF_SUBST([LIBPCREDIR])
 278    fi)
 279
 280AC_ARG_WITH(libpcre1,
 281AS_HELP_STRING([--with-libpcre1],[support Perl-compatible regexes via libpcre1 (default is NO)])
 282AS_HELP_STRING([],           [ARG can be also prefix for libpcre library and headers]),
 283    if test "$withval" = "no"; then
 284        USE_LIBPCRE1=
 285    elif test "$withval" = "yes"; then
 286        USE_LIBPCRE1=YesPlease
 287    else
 288        USE_LIBPCRE1=YesPlease
 289        LIBPCREDIR=$withval
 290        AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
 291        dnl USE_LIBPCRE1 can still be modified below, so don't substitute
 292        dnl it yet.
 293        GIT_CONF_SUBST([LIBPCREDIR])
 294    fi)
 295
 296AC_ARG_WITH(libpcre2,
 297AS_HELP_STRING([--with-libpcre2],[support Perl-compatible regexes via libpcre2 (default is NO)])
 298AS_HELP_STRING([],           [ARG can be also prefix for libpcre library and headers]),
 299    if test -n "$USE_LIBPCRE2"; then
 300        AC_MSG_ERROR([Only supply one of --with-libpcre or its synonym --with-libpcre2!])
 301    fi
 302
 303    if test -n "$USE_LIBPCRE1"; then
 304        AC_MSG_ERROR([Only supply one of --with-libpcre1 or --with-libpcre2!])
 305    fi
 306
 307    if test "$withval" = "no"; then
 308        USE_LIBPCRE2=
 309    elif test "$withval" = "yes"; then
 310        USE_LIBPCRE2=YesPlease
 311    else
 312        USE_LIBPCRE2=YesPlease
 313        LIBPCREDIR=$withval
 314        AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
 315        dnl USE_LIBPCRE2 can still be modified below, so don't substitute
 316        dnl it yet.
 317        GIT_CONF_SUBST([LIBPCREDIR])
 318    fi)
 319#
 320# Define HAVE_ALLOCA_H if you have working alloca(3) defined in that header.
 321AC_FUNC_ALLOCA
 322case $ac_cv_working_alloca_h in
 323    yes)    HAVE_ALLOCA_H=YesPlease;;
 324    *)      HAVE_ALLOCA_H='';;
 325esac
 326GIT_CONF_SUBST([HAVE_ALLOCA_H])
 327#
 328# Define NO_CURL if you do not have curl installed.  git-http-pull and
 329# git-http-push are not built, and you cannot use http:// and https://
 330# transports.
 331#
 332# Define CURLDIR=/foo/bar if your curl header and library files are in
 333# /foo/bar/include and /foo/bar/lib directories.
 334AC_ARG_WITH(curl,
 335AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
 336AS_HELP_STRING([],           [ARG can be also prefix for curl library and headers]),
 337GIT_PARSE_WITH(curl))
 338#
 339# Define NO_EXPAT if you do not have expat installed.  git-http-push is
 340# not built, and you cannot push using http:// and https:// transports.
 341#
 342# Define EXPATDIR=/foo/bar if your expat header and library files are in
 343# /foo/bar/include and /foo/bar/lib directories.
 344AC_ARG_WITH(expat,
 345AS_HELP_STRING([--with-expat],
 346[support git-push using http:// and https:// transports via WebDAV (default is YES)])
 347AS_HELP_STRING([],            [ARG can be also prefix for expat library and headers]),
 348GIT_PARSE_WITH(expat))
 349#
 350# Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
 351# installed in /sw, but don't want GIT to link against any libraries
 352# installed there.  If defined you may specify your own (or Fink's)
 353# include directories and library directories by defining CFLAGS
 354# and LDFLAGS appropriately.
 355#
 356# Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
 357# have DarwinPorts installed in /opt/local, but don't want GIT to
 358# link against any libraries installed there.  If defined you may
 359# specify your own (or DarwinPort's) include directories and
 360# library directories by defining CFLAGS and LDFLAGS appropriately.
 361#
 362# Define NO_MMAP if you want to avoid mmap.
 363#
 364# Define NO_ICONV if your libc does not properly support iconv.
 365AC_ARG_WITH(iconv,
 366AS_HELP_STRING([--without-iconv],
 367[if your architecture doesn't properly support iconv])
 368AS_HELP_STRING([--with-iconv=PATH],
 369[PATH is prefix for libiconv library and headers])
 370AS_HELP_STRING([],
 371[used only if you need linking with libiconv]),
 372GIT_PARSE_WITH(iconv))
 373
 374## --enable-FEATURE[=ARG] and --disable-FEATURE
 375#
 376# Define USE_NSEC below if you want git to care about sub-second file mtimes
 377# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
 378# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
 379# randomly break unless your underlying filesystem supports those sub-second
 380# times (my ext3 doesn't).
 381#
 382# Define USE_STDEV below if you want git to care about the underlying device
 383# change being considered an inode change from the update-index perspective.
 384
 385#
 386# Allow user to set ETC_GITCONFIG variable
 387GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG,
 388                        Use VALUE instead of /etc/gitconfig as the
 389                        global git configuration file.
 390                        If VALUE is not fully qualified it will be interpreted
 391                        as a path relative to the computed prefix at runtime.)
 392
 393#
 394# Allow user to set ETC_GITATTRIBUTES variable
 395GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES,
 396                        Use VALUE instead of /etc/gitattributes as the
 397                        global git attributes file.
 398                        If VALUE is not fully qualified it will be interpreted
 399                        as a path relative to the computed prefix at runtime.)
 400
 401#
 402# Allow user to set the default pager
 403GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER,
 404                        Use VALUE as the fall-back pager instead of 'less'.
 405                        This is used by things like 'git log' when the user
 406                        does not specify a pager to use through alternate
 407                        methods. eg: /usr/bin/pager)
 408#
 409# Allow user to set the default editor
 410GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR,
 411                        Use VALUE as the fall-back editor instead of 'vi'.
 412                        This is used by things like 'git commit' when the user
 413                        does not specify a preferred editor through other
 414                        methods. eg: /usr/bin/editor)
 415
 416#
 417# Define SHELL_PATH to provide path to shell.
 418GIT_ARG_SET_PATH(shell)
 419#
 420# Define PERL_PATH to provide path to Perl.
 421GIT_ARG_SET_PATH(perl)
 422#
 423# Define PYTHON_PATH to provide path to Python.
 424GIT_ARG_SET_PATH(python, allow-without)
 425#
 426# Define ZLIB_PATH to provide path to zlib.
 427GIT_ARG_SET_PATH(zlib)
 428#
 429# Declare the with-tcltk/without-tcltk options.
 430AC_ARG_WITH(tcltk,
 431AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
 432AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
 433AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
 434AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),
 435GIT_PARSE_WITH(tcltk))
 436#
 437
 438
 439## Checks for programs.
 440AC_MSG_NOTICE([CHECKS for programs])
 441#
 442AC_PROG_CC([cc gcc])
 443AC_C_INLINE
 444case $ac_cv_c_inline in
 445  inline | yes | no) INLINE='';;
 446  *)                 INLINE=$ac_cv_c_inline ;;
 447esac
 448GIT_CONF_SUBST([INLINE])
 449
 450# which switch to pass runtime path to dynamic libraries to the linker
 451AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [
 452   SAVE_LDFLAGS="${LDFLAGS}"
 453   LDFLAGS="${SAVE_LDFLAGS} -R /"
 454   AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no])
 455   LDFLAGS="${SAVE_LDFLAGS}"
 456])
 457if test "$git_cv_ld_dashr" = "yes"; then
 458   CC_LD_DYNPATH=-R
 459else
 460   AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [
 461      SAVE_LDFLAGS="${LDFLAGS}"
 462      LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/"
 463      AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no])
 464      LDFLAGS="${SAVE_LDFLAGS}"
 465   ])
 466   if test "$git_cv_ld_wl_rpath" = "yes"; then
 467      CC_LD_DYNPATH=-Wl,-rpath,
 468   else
 469      AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [
 470         SAVE_LDFLAGS="${LDFLAGS}"
 471         LDFLAGS="${SAVE_LDFLAGS} -rpath /"
 472         AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no])
 473         LDFLAGS="${SAVE_LDFLAGS}"
 474      ])
 475      if test "$git_cv_ld_rpath" = "yes"; then
 476         CC_LD_DYNPATH=-rpath
 477      else
 478         CC_LD_DYNPATH=
 479         AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
 480      fi
 481   fi
 482fi
 483GIT_CONF_SUBST([CC_LD_DYNPATH])
 484#AC_PROG_INSTALL                # needs install-sh or install.sh in sources
 485AC_CHECK_TOOLS(AR, [gar ar], :)
 486AC_CHECK_PROGS(TAR, [gtar tar])
 487AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff])
 488# TCLTK_PATH will be set to some value if we want Tcl/Tk
 489# or will be empty otherwise.
 490if test -n "$NO_TCLTK"; then
 491  TCLTK_PATH=
 492else
 493  if test "$with_tcltk" = ""; then
 494  # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
 495    TCLTK_PATH=wish
 496  elif test "$with_tcltk" = "yes"; then
 497  # Tcl/Tk check requested.
 498    AC_CHECK_PROGS(TCLTK_PATH, [wish], )
 499  else
 500    AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
 501    TCLTK_PATH="$with_tcltk"
 502  fi
 503fi
 504GIT_CONF_SUBST([TCLTK_PATH])
 505AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
 506if test -n "$ASCIIDOC"; then
 507        AC_MSG_CHECKING([for asciidoc version])
 508        asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
 509        case "${asciidoc_version}" in
 510        asciidoc' '8*)
 511                AC_MSG_RESULT([${asciidoc_version}])
 512                ;;
 513        *)
 514                AC_MSG_RESULT([${asciidoc_version} (unknown)])
 515                ;;
 516        esac
 517fi
 518
 519if grep -a ascii configure.ac >/dev/null; then
 520  AC_MSG_RESULT([Using 'grep -a' for sane_grep])
 521  SANE_TEXT_GREP=-a
 522else
 523  SANE_TEXT_GREP=
 524fi
 525GIT_CONF_SUBST([SANE_TEXT_GREP])
 526
 527## Checks for libraries.
 528AC_MSG_NOTICE([CHECKS for libraries])
 529#
 530# Define NO_OPENSSL environment variable if you do not have OpenSSL.
 531# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
 532
 533GIT_STASH_FLAGS($OPENSSLDIR)
 534
 535AC_CHECK_LIB([crypto], [SHA1_Init],
 536[NEEDS_SSL_WITH_CRYPTO=],
 537[AC_CHECK_LIB([ssl], [SHA1_Init],
 538 [NEEDS_SSL_WITH_CRYPTO=YesPlease NO_OPENSSL=],
 539 [NEEDS_SSL_WITH_CRYPTO=          NO_OPENSSL=YesPlease])])
 540
 541GIT_UNSTASH_FLAGS($OPENSSLDIR)
 542
 543GIT_CONF_SUBST([NEEDS_SSL_WITH_CRYPTO])
 544GIT_CONF_SUBST([NO_OPENSSL])
 545
 546#
 547# Handle the USE_LIBPCRE1 and USE_LIBPCRE2 options potentially set
 548# above.
 549#
 550
 551if test -n "$USE_LIBPCRE1"; then
 552
 553GIT_STASH_FLAGS($LIBPCREDIR)
 554
 555AC_CHECK_LIB([pcre], [pcre_version],
 556[USE_LIBPCRE1=YesPlease],
 557[USE_LIBPCRE1=])
 558
 559GIT_UNSTASH_FLAGS($LIBPCREDIR)
 560
 561GIT_CONF_SUBST([USE_LIBPCRE1])
 562
 563fi
 564
 565
 566if test -n "$USE_LIBPCRE2"; then
 567
 568GIT_STASH_FLAGS($LIBPCREDIR)
 569
 570AC_CHECK_LIB([pcre2-8], [pcre2_config_8],
 571[USE_LIBPCRE2=YesPlease],
 572[USE_LIBPCRE2=])
 573
 574GIT_UNSTASH_FLAGS($LIBPCREDIR)
 575
 576GIT_CONF_SUBST([USE_LIBPCRE2])
 577
 578fi
 579
 580#
 581# Define NO_CURL if you do not have libcurl installed.  git-http-pull and
 582# git-http-push are not built, and you cannot use http:// and https://
 583# transports.
 584
 585GIT_STASH_FLAGS($CURLDIR)
 586
 587AC_CHECK_LIB([curl], [curl_global_init],
 588[NO_CURL=],
 589[NO_CURL=YesPlease])
 590
 591GIT_UNSTASH_FLAGS($CURLDIR)
 592
 593GIT_CONF_SUBST([NO_CURL])
 594
 595if test -z "$NO_CURL"; then
 596
 597AC_CHECK_PROG([CURL_CONFIG], [curl-config],
 598[curl-config],
 599[no])
 600
 601if test $CURL_CONFIG != no; then
 602    GIT_CONF_SUBST([CURL_CONFIG])
 603    if test -z "${NO_OPENSSL}"; then
 604      AC_MSG_CHECKING([if Curl supports SSL])
 605      if test $(curl-config --features|grep SSL) = SSL; then
 606         NEEDS_SSL_WITH_CURL=YesPlease
 607         AC_MSG_RESULT([yes])
 608      else
 609         NEEDS_SSL_WITH_CURL=
 610         AC_MSG_RESULT([no])
 611      fi
 612      GIT_CONF_SUBST([NEEDS_SSL_WITH_CURL])
 613    fi
 614fi
 615
 616fi
 617
 618
 619#
 620# Define NO_EXPAT if you do not have expat installed.  git-http-push is
 621# not built, and you cannot push using http:// and https:// transports.
 622
 623GIT_STASH_FLAGS($EXPATDIR)
 624
 625AC_CHECK_LIB([expat], [XML_ParserCreate],
 626[NO_EXPAT=],
 627[NO_EXPAT=YesPlease])
 628
 629GIT_UNSTASH_FLAGS($EXPATDIR)
 630
 631GIT_CONF_SUBST([NO_EXPAT])
 632
 633#
 634# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
 635# some Solaris installations).
 636# Define NO_ICONV if neither libc nor libiconv support iconv.
 637
 638if test -z "$NO_ICONV"; then
 639
 640GIT_STASH_FLAGS($ICONVDIR)
 641
 642AC_DEFUN([ICONVTEST_SRC],
 643[AC_LANG_PROGRAM([#include <iconv.h>],
 644 [iconv_open("", "");])])
 645
 646if test -n "$ICONVDIR"; then
 647   lib_order="-liconv -lc"
 648else
 649   lib_order="-lc -liconv"
 650fi
 651
 652NO_ICONV=YesPlease
 653
 654for l in $lib_order; do
 655    if test "$l" = "-liconv"; then
 656       NEEDS_LIBICONV=YesPlease
 657    else
 658       NEEDS_LIBICONV=
 659    fi
 660
 661    old_LIBS="$LIBS"
 662    LIBS="$LIBS $l"
 663    AC_MSG_CHECKING([for iconv in $l])
 664    AC_LINK_IFELSE([ICONVTEST_SRC],
 665        [AC_MSG_RESULT([yes])
 666        NO_ICONV=
 667        break],
 668        [AC_MSG_RESULT([no])])
 669    LIBS="$old_LIBS"
 670done
 671
 672#in case of break
 673LIBS="$old_LIBS"
 674
 675GIT_UNSTASH_FLAGS($ICONVDIR)
 676
 677GIT_CONF_SUBST([NEEDS_LIBICONV])
 678GIT_CONF_SUBST([NO_ICONV])
 679
 680if test -n "$NO_ICONV"; then
 681    NEEDS_LIBICONV=
 682fi
 683
 684fi
 685
 686#
 687# Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
 688
 689GIT_STASH_FLAGS($ZLIB_PATH)
 690
 691AC_DEFUN([ZLIBTEST_SRC], [
 692AC_LANG_PROGRAM([#include <zlib.h>],
 693 [deflateBound(0, 0);])])
 694AC_MSG_CHECKING([for deflateBound in -lz])
 695old_LIBS="$LIBS"
 696LIBS="$LIBS -lz"
 697AC_LINK_IFELSE([ZLIBTEST_SRC],
 698        [AC_MSG_RESULT([yes])],
 699        [AC_MSG_RESULT([no])
 700        NO_DEFLATE_BOUND=yes])
 701LIBS="$old_LIBS"
 702
 703GIT_UNSTASH_FLAGS($ZLIB_PATH)
 704
 705GIT_CONF_SUBST([NO_DEFLATE_BOUND])
 706
 707#
 708# Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
 709# Patrick Mauritz).
 710AC_CHECK_LIB([c], [socket],
 711[NEEDS_SOCKET=],
 712[NEEDS_SOCKET=YesPlease])
 713GIT_CONF_SUBST([NEEDS_SOCKET])
 714test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
 715
 716#
 717# The next few tests will define NEEDS_RESOLV if linking with
 718# libresolv provides some of the functions we would normally get
 719# from libc.
 720NEEDS_RESOLV=
 721#
 722# Define NO_INET_NTOP if linking with -lresolv is not enough.
 723# Solaris 2.7 in particular hos inet_ntop in -lresolv.
 724NO_INET_NTOP=
 725AC_CHECK_FUNC([inet_ntop],
 726    [],
 727    [AC_CHECK_LIB([resolv], [inet_ntop],
 728        [NEEDS_RESOLV=YesPlease],
 729        [NO_INET_NTOP=YesPlease])
 730])
 731GIT_CONF_SUBST([NO_INET_NTOP])
 732#
 733# Define NO_INET_PTON if linking with -lresolv is not enough.
 734# Solaris 2.7 in particular hos inet_pton in -lresolv.
 735NO_INET_PTON=
 736AC_CHECK_FUNC([inet_pton],
 737    [],
 738    [AC_CHECK_LIB([resolv], [inet_pton],
 739        [NEEDS_RESOLV=YesPlease],
 740        [NO_INET_PTON=YesPlease])
 741])
 742GIT_CONF_SUBST([NO_INET_PTON])
 743#
 744# Define NO_HSTRERROR if linking with -lresolv is not enough.
 745# Solaris 2.6 in particular has no hstrerror, even in -lresolv.
 746NO_HSTRERROR=
 747AC_CHECK_FUNC([hstrerror],
 748    [],
 749    [AC_CHECK_LIB([resolv], [hstrerror],
 750        [NEEDS_RESOLV=YesPlease],
 751        [NO_HSTRERROR=YesPlease])
 752])
 753GIT_CONF_SUBST([NO_HSTRERROR])
 754
 755dnl This must go after all the possible places for its initialization,
 756dnl in the AC_CHECK_FUNC invocations above.
 757GIT_CONF_SUBST([NEEDS_RESOLV])
 758#
 759# If any of the above tests determined that -lresolv is needed at
 760# build-time, also set it here for remaining configure-time checks.
 761test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv"
 762
 763AC_CHECK_LIB([c], [basename],
 764[NEEDS_LIBGEN=],
 765[NEEDS_LIBGEN=YesPlease])
 766GIT_CONF_SUBST([NEEDS_LIBGEN])
 767test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen"
 768
 769AC_CHECK_LIB([c], [gettext],
 770[LIBC_CONTAINS_LIBINTL=YesPlease],
 771[LIBC_CONTAINS_LIBINTL=])
 772GIT_CONF_SUBST([LIBC_CONTAINS_LIBINTL])
 773
 774#
 775# Define NO_GETTEXT if you don't want Git output to be translated.
 776# A translated Git requires GNU libintl or another gettext implementation
 777AC_CHECK_HEADER([libintl.h],
 778[NO_GETTEXT=],
 779[NO_GETTEXT=YesPlease])
 780GIT_CONF_SUBST([NO_GETTEXT])
 781
 782if test -z "$NO_GETTEXT"; then
 783    test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl"
 784fi
 785
 786## Checks for header files.
 787AC_MSG_NOTICE([CHECKS for header files])
 788#
 789# Define NO_SYS_SELECT_H if you don't have sys/select.h.
 790AC_CHECK_HEADER([sys/select.h],
 791[NO_SYS_SELECT_H=],
 792[NO_SYS_SELECT_H=UnfortunatelyYes])
 793GIT_CONF_SUBST([NO_SYS_SELECT_H])
 794#
 795# Define NO_SYS_POLL_H if you don't have sys/poll.h
 796AC_CHECK_HEADER([sys/poll.h],
 797[NO_SYS_POLL_H=],
 798[NO_SYS_POLL_H=UnfortunatelyYes])
 799GIT_CONF_SUBST([NO_SYS_POLL_H])
 800#
 801# Define NO_INTTYPES_H if you don't have inttypes.h
 802AC_CHECK_HEADER([inttypes.h],
 803[NO_INTTYPES_H=],
 804[NO_INTTYPES_H=UnfortunatelyYes])
 805GIT_CONF_SUBST([NO_INTTYPES_H])
 806#
 807# Define OLD_ICONV if your library has an old iconv(), where the second
 808# (input buffer pointer) parameter is declared with type (const char **).
 809AC_DEFUN([OLDICONVTEST_SRC], [
 810AC_LANG_PROGRAM([[
 811#include <iconv.h>
 812
 813extern size_t iconv(iconv_t cd,
 814                    char **inbuf, size_t *inbytesleft,
 815                    char **outbuf, size_t *outbytesleft);
 816]], [])])
 817
 818GIT_STASH_FLAGS($ICONVDIR)
 819
 820AC_MSG_CHECKING([for old iconv()])
 821AC_COMPILE_IFELSE([OLDICONVTEST_SRC],
 822        [AC_MSG_RESULT([no])],
 823        [AC_MSG_RESULT([yes])
 824        OLD_ICONV=UnfortunatelyYes])
 825
 826GIT_UNSTASH_FLAGS($ICONVDIR)
 827
 828GIT_CONF_SUBST([OLD_ICONV])
 829
 830## Checks for typedefs, structures, and compiler characteristics.
 831AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
 832#
 833TYPE_SOCKLEN_T
 834case $ac_cv_type_socklen_t in
 835  yes)  SOCKLEN_T='';;
 836  *)    SOCKLEN_T=$git_cv_socklen_t_equiv;;
 837esac
 838GIT_CONF_SUBST([SOCKLEN_T])
 839
 840#
 841# Define NO_STRUCT_ITIMERVAL if you don't have struct itimerval.
 842AC_CHECK_TYPES([struct itimerval],
 843[NO_STRUCT_ITIMERVAL=],
 844[NO_STRUCT_ITIMERVAL=UnfortunatelyYes],
 845[#include <sys/time.h>])
 846GIT_CONF_SUBST([NO_STRUCT_ITIMERVAL])
 847#
 848# Define USE_ST_TIMESPEC=YesPlease when stat.st_mtimespec.tv_nsec exists.
 849# Define NO_NSEC=YesPlease when neither stat.st_mtim.tv_nsec nor
 850# stat.st_mtimespec.tv_nsec exists.
 851AC_CHECK_MEMBER([struct stat.st_mtimespec.tv_nsec])
 852AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec])
 853if test x$ac_cv_member_struct_stat_st_mtimespec_tv_nsec = xyes; then
 854        USE_ST_TIMESPEC=YesPlease
 855        GIT_CONF_SUBST([USE_ST_TIMESPEC])
 856elif test x$ac_cv_member_struct_stat_st_mtim_tv_nsec != xyes; then
 857        NO_NSEC=YesPlease
 858        GIT_CONF_SUBST([NO_NSEC])
 859fi
 860#
 861# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
 862# d_type in struct dirent (latest Cygwin -- will be fixed soonish).
 863AC_CHECK_MEMBER(struct dirent.d_type,
 864[NO_D_TYPE_IN_DIRENT=],
 865[NO_D_TYPE_IN_DIRENT=YesPlease],
 866[#include <dirent.h>])
 867GIT_CONF_SUBST([NO_D_TYPE_IN_DIRENT])
 868#
 869# Define NO_GECOS_IN_PWENT if you don't have pw_gecos in struct passwd
 870# in the C library.
 871AC_CHECK_MEMBER(struct passwd.pw_gecos,
 872[NO_GECOS_IN_PWENT=],
 873[NO_GECOS_IN_PWENT=YesPlease],
 874[#include <pwd.h>])
 875GIT_CONF_SUBST([NO_GECOS_IN_PWENT])
 876#
 877# Define NO_SOCKADDR_STORAGE if your platform does not have struct
 878# sockaddr_storage.
 879AC_CHECK_TYPE(struct sockaddr_storage,
 880[NO_SOCKADDR_STORAGE=],
 881[NO_SOCKADDR_STORAGE=YesPlease],[
 882#include <sys/types.h>
 883#include <sys/socket.h>
 884])
 885GIT_CONF_SUBST([NO_SOCKADDR_STORAGE])
 886#
 887# Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
 888AC_CHECK_TYPE([struct addrinfo],[
 889 GIT_CHECK_FUNC([getaddrinfo],
 890  [NO_IPV6=],
 891  [NO_IPV6=YesPlease])
 892],[NO_IPV6=YesPlease],[
 893#include <sys/types.h>
 894#include <sys/socket.h>
 895#include <netdb.h>
 896])
 897GIT_CONF_SUBST([NO_IPV6])
 898#
 899# Define NO_REGEX if your C library lacks regex support with REG_STARTEND
 900# feature.
 901AC_CACHE_CHECK([whether the platform regex supports REG_STARTEND],
 902 [ac_cv_c_regex_with_reg_startend], [
 903AC_EGREP_CPP(yippeeyeswehaveit,
 904        AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
 905#include <regex.h>
 906],
 907[#ifdef REG_STARTEND
 908yippeeyeswehaveit
 909#endif
 910]),
 911        [ac_cv_c_regex_with_reg_startend=yes],
 912        [ac_cv_c_regex_with_reg_startend=no])
 913])
 914if test $ac_cv_c_regex_with_reg_startend = yes; then
 915        NO_REGEX=
 916else
 917        NO_REGEX=YesPlease
 918fi
 919GIT_CONF_SUBST([NO_REGEX])
 920#
 921# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
 922# when attempting to read from an fopen'ed directory.
 923AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
 924 [ac_cv_fread_reads_directories],
 925[
 926AC_RUN_IFELSE(
 927        [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
 928                [[
 929                FILE *f = fopen(".", "r");
 930                return f != NULL;]])],
 931        [ac_cv_fread_reads_directories=no],
 932        [ac_cv_fread_reads_directories=yes])
 933])
 934if test $ac_cv_fread_reads_directories = yes; then
 935        FREAD_READS_DIRECTORIES=UnfortunatelyYes
 936else
 937        FREAD_READS_DIRECTORIES=
 938fi
 939GIT_CONF_SUBST([FREAD_READS_DIRECTORIES])
 940#
 941# Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
 942# or vsnprintf() return -1 instead of number of characters which would
 943# have been written to the final string if enough space had been available.
 944AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
 945 [ac_cv_snprintf_returns_bogus],
 946[
 947AC_RUN_IFELSE(
 948        [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
 949                #include "stdarg.h"
 950
 951                int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
 952                {
 953                  int ret;
 954                  va_list ap;
 955                  va_start(ap, format);
 956                  ret = vsnprintf(str, maxsize, format, ap);
 957                  va_end(ap);
 958                  return ret;
 959                }],
 960                [[char buf[6];
 961                  if (test_vsnprintf(buf, 3, "%s", "12345") != 5
 962                      || strcmp(buf, "12")) return 1;
 963                  if (snprintf(buf, 3, "%s", "12345") != 5
 964                      || strcmp(buf, "12")) return 1]])],
 965        [ac_cv_snprintf_returns_bogus=no],
 966        [ac_cv_snprintf_returns_bogus=yes])
 967])
 968if test $ac_cv_snprintf_returns_bogus = yes; then
 969        SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
 970else
 971        SNPRINTF_RETURNS_BOGUS=
 972fi
 973GIT_CONF_SUBST([SNPRINTF_RETURNS_BOGUS])
 974#
 975# Define NEEDS_MODE_TRANSLATION if your OS strays from the typical file type
 976# bits in mode values.
 977AC_CACHE_CHECK([whether the platform uses typical file type bits],
 978 [ac_cv_sane_mode_bits], [
 979AC_EGREP_CPP(yippeeyeswehaveit,
 980        AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
 981[#if S_IFMT == 0170000 && \
 982        S_IFREG == 0100000 && S_IFDIR == 0040000 && S_IFLNK == 0120000 && \
 983        S_IFBLK == 0060000 && S_IFCHR == 0020000 && \
 984        S_IFIFO == 0010000 && S_IFSOCK == 0140000
 985yippeeyeswehaveit
 986#endif
 987]),
 988        [ac_cv_sane_mode_bits=yes],
 989        [ac_cv_sane_mode_bits=no])
 990])
 991if test $ac_cv_sane_mode_bits = yes; then
 992        NEEDS_MODE_TRANSLATION=
 993else
 994        NEEDS_MODE_TRANSLATION=UnfortunatelyYes
 995fi
 996GIT_CONF_SUBST([NEEDS_MODE_TRANSLATION])
 997
 998
 999## Checks for library functions.
1000## (in default C library and libraries checked by AC_CHECK_LIB)
1001AC_MSG_NOTICE([CHECKS for library functions])
1002#
1003# Define NO_LIBGEN_H if you don't have libgen.h.
1004AC_CHECK_HEADER([libgen.h],
1005[NO_LIBGEN_H=],
1006[NO_LIBGEN_H=YesPlease])
1007GIT_CONF_SUBST([NO_LIBGEN_H])
1008#
1009# Define HAVE_PATHS_H if you have paths.h.
1010AC_CHECK_HEADER([paths.h],
1011[HAVE_PATHS_H=YesPlease],
1012[HAVE_PATHS_H=])
1013GIT_CONF_SUBST([HAVE_PATHS_H])
1014#
1015# Define HAVE_LIBCHARSET_H if have libcharset.h
1016AC_CHECK_HEADER([libcharset.h],
1017[HAVE_LIBCHARSET_H=YesPlease],
1018[HAVE_LIBCHARSET_H=])
1019GIT_CONF_SUBST([HAVE_LIBCHARSET_H])
1020#
1021# Define HAVE_STRINGS_H if you have strings.h
1022AC_CHECK_HEADER([strings.h],
1023[HAVE_STRINGS_H=YesPlease],
1024[HAVE_STRINGS_H=])
1025GIT_CONF_SUBST([HAVE_STRINGS_H])
1026# Define CHARSET_LIB if libiconv does not export the locale_charset symbol
1027# and libcharset does
1028CHARSET_LIB=
1029AC_CHECK_LIB([iconv], [locale_charset],
1030       [CHARSET_LIB=-liconv],
1031       [AC_CHECK_LIB([charset], [locale_charset],
1032                     [CHARSET_LIB=-lcharset])])
1033GIT_CONF_SUBST([CHARSET_LIB])
1034#
1035# Define HAVE_CLOCK_GETTIME=YesPlease if clock_gettime is available.
1036GIT_CHECK_FUNC(clock_gettime,
1037        [HAVE_CLOCK_GETTIME=YesPlease],
1038        [HAVE_CLOCK_GETTIME=])
1039GIT_CONF_SUBST([HAVE_CLOCK_GETTIME])
1040
1041AC_DEFUN([CLOCK_MONOTONIC_SRC], [
1042AC_LANG_PROGRAM([[
1043#include <time.h>
1044clockid_t id = CLOCK_MONOTONIC;
1045]])])
1046
1047#
1048# Define HAVE_CLOCK_MONOTONIC=YesPlease if CLOCK_MONOTONIC is available.
1049AC_MSG_CHECKING([for CLOCK_MONOTONIC])
1050AC_COMPILE_IFELSE([CLOCK_MONOTONIC_SRC],
1051        [AC_MSG_RESULT([yes])
1052        HAVE_CLOCK_MONOTONIC=YesPlease],
1053        [AC_MSG_RESULT([no])
1054        HAVE_CLOCK_MONOTONIC=])
1055GIT_CONF_SUBST([HAVE_CLOCK_MONOTONIC])
1056#
1057# Define NO_SETITIMER if you don't have setitimer.
1058GIT_CHECK_FUNC(setitimer,
1059[NO_SETITIMER=],
1060[NO_SETITIMER=YesPlease])
1061GIT_CONF_SUBST([NO_SETITIMER])
1062#
1063# Define NO_STRCASESTR if you don't have strcasestr.
1064GIT_CHECK_FUNC(strcasestr,
1065[NO_STRCASESTR=],
1066[NO_STRCASESTR=YesPlease])
1067GIT_CONF_SUBST([NO_STRCASESTR])
1068#
1069# Define NO_MEMMEM if you don't have memmem.
1070GIT_CHECK_FUNC(memmem,
1071[NO_MEMMEM=],
1072[NO_MEMMEM=YesPlease])
1073GIT_CONF_SUBST([NO_MEMMEM])
1074#
1075# Define NO_STRLCPY if you don't have strlcpy.
1076GIT_CHECK_FUNC(strlcpy,
1077[NO_STRLCPY=],
1078[NO_STRLCPY=YesPlease])
1079GIT_CONF_SUBST([NO_STRLCPY])
1080#
1081# Define NO_UINTMAX_T if your platform does not have uintmax_t
1082AC_CHECK_TYPE(uintmax_t,
1083[NO_UINTMAX_T=],
1084[NO_UINTMAX_T=YesPlease],[
1085#include <inttypes.h>
1086])
1087GIT_CONF_SUBST([NO_UINTMAX_T])
1088#
1089# Define NO_STRTOUMAX if you don't have strtoumax in the C library.
1090GIT_CHECK_FUNC(strtoumax,
1091[NO_STRTOUMAX=],
1092[NO_STRTOUMAX=YesPlease])
1093GIT_CONF_SUBST([NO_STRTOUMAX])
1094#
1095# Define NO_SETENV if you don't have setenv in the C library.
1096GIT_CHECK_FUNC(setenv,
1097[NO_SETENV=],
1098[NO_SETENV=YesPlease])
1099GIT_CONF_SUBST([NO_SETENV])
1100#
1101# Define NO_UNSETENV if you don't have unsetenv in the C library.
1102GIT_CHECK_FUNC(unsetenv,
1103[NO_UNSETENV=],
1104[NO_UNSETENV=YesPlease])
1105GIT_CONF_SUBST([NO_UNSETENV])
1106#
1107# Define NO_MKDTEMP if you don't have mkdtemp in the C library.
1108GIT_CHECK_FUNC(mkdtemp,
1109[NO_MKDTEMP=],
1110[NO_MKDTEMP=YesPlease])
1111GIT_CONF_SUBST([NO_MKDTEMP])
1112#
1113# Define NO_INITGROUPS if you don't have initgroups in the C library.
1114GIT_CHECK_FUNC(initgroups,
1115[NO_INITGROUPS=],
1116[NO_INITGROUPS=YesPlease])
1117GIT_CONF_SUBST([NO_INITGROUPS])
1118#
1119# Define HAVE_GETDELIM if you have getdelim in the C library.
1120GIT_CHECK_FUNC(getdelim,
1121[HAVE_GETDELIM=YesPlease],
1122[HAVE_GETDELIM=])
1123GIT_CONF_SUBST([HAVE_GETDELIM])
1124#
1125#
1126# Define NO_MMAP if you want to avoid mmap.
1127#
1128# Define NO_ICONV if your libc does not properly support iconv.
1129
1130AC_DEFUN([BSD_SYSCTL_SRC], [
1131AC_LANG_PROGRAM([[
1132#include <stddef.h>
1133#include <sys/types.h>
1134#include <sys/sysctl.h>
1135]],[[
1136int val, mib[2];
1137size_t len;
1138mib[0] = CTL_HW;
1139mib[1] = 1;
1140len = sizeof(val);
1141return sysctl(mib, 2, &val, &len, NULL, 0) ? 1 : 0;
1142]])])
1143
1144#
1145# Define HAVE_BSD_SYSCTL=YesPlease if a BSD-compatible sysctl function is available.
1146AC_MSG_CHECKING([for BSD sysctl])
1147AC_COMPILE_IFELSE([BSD_SYSCTL_SRC],
1148        [AC_MSG_RESULT([yes])
1149        HAVE_BSD_SYSCTL=YesPlease],
1150        [AC_MSG_RESULT([no])
1151        HAVE_BSD_SYSCTL=])
1152GIT_CONF_SUBST([HAVE_BSD_SYSCTL])
1153
1154## Other checks.
1155# Define USE_PIC if you need the main git objects to be built with -fPIC
1156# in order to build and link perl/Git.so.  x86-64 seems to need this.
1157#
1158# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
1159# Enable it on Windows.  By default, symrefs are still used.
1160#
1161# Define NO_PTHREADS if we do not have pthreads.
1162#
1163# Define PTHREAD_LIBS to the linker flag used for Pthread support.
1164AC_DEFUN([PTHREADTEST_SRC], [
1165AC_LANG_PROGRAM([[
1166#include <pthread.h>
1167static void *noop(void *ignore) { return ignore; }
1168]], [[
1169        pthread_mutex_t test_mutex;
1170        pthread_key_t test_key;
1171        pthread_t th;
1172        int retcode = 0;
1173        void *ret = (void *)0;
1174        retcode |= pthread_key_create(&test_key, (void *)0);
1175        retcode |= pthread_mutex_init(&test_mutex,(void *)0);
1176        retcode |= pthread_mutex_lock(&test_mutex);
1177        retcode |= pthread_mutex_unlock(&test_mutex);
1178        retcode |= pthread_create(&th, ret, noop, ret);
1179        retcode |= pthread_join(th, &ret);
1180        return retcode;
1181]])])
1182
1183dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(
1184dnl   [[#include <pthread.h>]],
1185dnl   [[pthread_mutex_t test_mutex;]]
1186dnl )])
1187
1188NO_PTHREADS=UnfortunatelyYes
1189PTHREAD_LIBS=
1190
1191if test -n "$USER_NOPTHREAD"; then
1192   AC_MSG_NOTICE([Skipping POSIX Threads at user request.])
1193# handle these separately since PTHREAD_CFLAGS could be '-lpthreads
1194# -D_REENTRANT' or some such.
1195elif test -z "$PTHREAD_CFLAGS"; then
1196  threads_found=no
1197  # Attempt to compile and link some code using pthreads to determine
1198  # required linker flags. The order is somewhat important here: We
1199  # first try it without any extra flags, to catch systems where
1200  # pthreads are part of the C library, then go on testing various other
1201  # flags. We do so to avoid false positives. For example, on Mac OS X
1202  # pthreads are part of the C library; moreover, the compiler allows us
1203  # to add "-mt" to the CFLAGS (although it will do nothing except
1204  # trigger a warning about an unused flag). Hence if we checked for
1205  # "-mt" before "" we would end up picking it. But unfortunately this
1206  # would then trigger compiler warnings on every single file we compile.
1207  for opt in "" -mt -pthread -lpthread; do
1208     old_CFLAGS="$CFLAGS"
1209     old_LIBS="$LIBS"
1210     case "$opt" in
1211        -l*)  LIBS="$opt $LIBS" ;;
1212        *)    CFLAGS="$opt $CFLAGS" ;;
1213     esac
1214
1215     AC_MSG_CHECKING([for POSIX Threads with '$opt'])
1216     AC_LINK_IFELSE([PTHREADTEST_SRC],
1217        [AC_MSG_RESULT([yes])
1218                NO_PTHREADS=
1219                PTHREAD_LIBS="$opt"
1220                PTHREAD_CFLAGS="$opt"
1221                threads_found=yes
1222                break
1223        ],
1224        [AC_MSG_RESULT([no])])
1225      CFLAGS="$old_CFLAGS"
1226      LIBS="$old_LIBS"
1227  done
1228  if test $threads_found != yes; then
1229    AC_CHECK_LIB([pthread], [pthread_create],
1230        [PTHREAD_LIBS="-lpthread"],
1231        [NO_PTHREADS=UnfortunatelyYes])
1232  fi
1233else
1234  old_CFLAGS="$CFLAGS"
1235  CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
1236  AC_MSG_CHECKING([for POSIX Threads with '$PTHREAD_CFLAGS'])
1237  AC_LINK_IFELSE([PTHREADTEST_SRC],
1238        [AC_MSG_RESULT([yes])
1239                NO_PTHREADS=
1240                PTHREAD_LIBS="$PTHREAD_CFLAGS"
1241        ],
1242        [AC_MSG_RESULT([no])])
1243
1244  CFLAGS="$old_CFLAGS"
1245fi
1246
1247CFLAGS="$old_CFLAGS"
1248
1249GIT_CONF_SUBST([PTHREAD_CFLAGS])
1250GIT_CONF_SUBST([PTHREAD_LIBS])
1251GIT_CONF_SUBST([NO_PTHREADS])
1252
1253## Output files
1254AC_CONFIG_FILES(["${config_file}":"${config_in}"])
1255AC_OUTPUT