configure.acon commit Merge branch 'mo/hpux-dynpath' (069874c)
   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         AC_CACHE_CHECK([if linker supports -Wl,+b,], git_cv_ld_wl_b, [
 479            SAVE_LDFLAGS="${LDFLAGS}"
 480            LDFLAGS="${SAVE_LDFLAGS} -Wl,+b,/"
 481            AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_b=yes], [git_cv_ld_wl_b=no])
 482            LDFLAGS="${SAVE_LDFLAGS}"
 483         ])
 484         if test "$git_cv_ld_wl_b" = "yes"; then
 485            CC_LD_DYNPATH=-Wl,+b,
 486          else
 487             CC_LD_DYNPATH=
 488             AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
 489          fi
 490      fi
 491   fi
 492fi
 493GIT_CONF_SUBST([CC_LD_DYNPATH])
 494#AC_PROG_INSTALL                # needs install-sh or install.sh in sources
 495AC_CHECK_TOOLS(AR, [gar ar], :)
 496AC_CHECK_PROGS(TAR, [gtar tar])
 497AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff])
 498# TCLTK_PATH will be set to some value if we want Tcl/Tk
 499# or will be empty otherwise.
 500if test -n "$NO_TCLTK"; then
 501  TCLTK_PATH=
 502else
 503  if test "$with_tcltk" = ""; then
 504  # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
 505    TCLTK_PATH=wish
 506  elif test "$with_tcltk" = "yes"; then
 507  # Tcl/Tk check requested.
 508    AC_CHECK_PROGS(TCLTK_PATH, [wish], )
 509  else
 510    AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
 511    TCLTK_PATH="$with_tcltk"
 512  fi
 513fi
 514GIT_CONF_SUBST([TCLTK_PATH])
 515AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
 516if test -n "$ASCIIDOC"; then
 517        AC_MSG_CHECKING([for asciidoc version])
 518        asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
 519        case "${asciidoc_version}" in
 520        asciidoc' '8*)
 521                AC_MSG_RESULT([${asciidoc_version}])
 522                ;;
 523        *)
 524                AC_MSG_RESULT([${asciidoc_version} (unknown)])
 525                ;;
 526        esac
 527fi
 528
 529if grep -a ascii configure.ac >/dev/null; then
 530  AC_MSG_RESULT([Using 'grep -a' for sane_grep])
 531  SANE_TEXT_GREP=-a
 532else
 533  SANE_TEXT_GREP=
 534fi
 535GIT_CONF_SUBST([SANE_TEXT_GREP])
 536
 537## Checks for libraries.
 538AC_MSG_NOTICE([CHECKS for libraries])
 539#
 540# Define NO_OPENSSL environment variable if you do not have OpenSSL.
 541# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
 542
 543GIT_STASH_FLAGS($OPENSSLDIR)
 544
 545AC_CHECK_LIB([crypto], [SHA1_Init],
 546[NEEDS_SSL_WITH_CRYPTO=],
 547[AC_CHECK_LIB([ssl], [SHA1_Init],
 548 [NEEDS_SSL_WITH_CRYPTO=YesPlease NO_OPENSSL=],
 549 [NEEDS_SSL_WITH_CRYPTO=          NO_OPENSSL=YesPlease])])
 550
 551GIT_UNSTASH_FLAGS($OPENSSLDIR)
 552
 553GIT_CONF_SUBST([NEEDS_SSL_WITH_CRYPTO])
 554GIT_CONF_SUBST([NO_OPENSSL])
 555
 556#
 557# Handle the USE_LIBPCRE1 and USE_LIBPCRE2 options potentially set
 558# above.
 559#
 560
 561if test -n "$USE_LIBPCRE1"; then
 562
 563GIT_STASH_FLAGS($LIBPCREDIR)
 564
 565AC_CHECK_LIB([pcre], [pcre_version],
 566[USE_LIBPCRE1=YesPlease],
 567[USE_LIBPCRE1=])
 568
 569GIT_UNSTASH_FLAGS($LIBPCREDIR)
 570
 571GIT_CONF_SUBST([USE_LIBPCRE1])
 572
 573fi
 574
 575
 576if test -n "$USE_LIBPCRE2"; then
 577
 578GIT_STASH_FLAGS($LIBPCREDIR)
 579
 580AC_CHECK_LIB([pcre2-8], [pcre2_config_8],
 581[USE_LIBPCRE2=YesPlease],
 582[USE_LIBPCRE2=])
 583
 584GIT_UNSTASH_FLAGS($LIBPCREDIR)
 585
 586GIT_CONF_SUBST([USE_LIBPCRE2])
 587
 588fi
 589
 590#
 591# Define NO_CURL if you do not have libcurl installed.  git-http-pull and
 592# git-http-push are not built, and you cannot use http:// and https://
 593# transports.
 594
 595GIT_STASH_FLAGS($CURLDIR)
 596
 597AC_CHECK_LIB([curl], [curl_global_init],
 598[NO_CURL=],
 599[NO_CURL=YesPlease])
 600
 601GIT_UNSTASH_FLAGS($CURLDIR)
 602
 603GIT_CONF_SUBST([NO_CURL])
 604
 605if test -z "$NO_CURL"; then
 606
 607AC_CHECK_PROG([CURL_CONFIG], [curl-config],
 608[curl-config],
 609[no])
 610
 611if test $CURL_CONFIG != no; then
 612    GIT_CONF_SUBST([CURL_CONFIG])
 613
 614    if test -z "$CURL_CONFIG_OPTS"; then
 615        CURL_CONFIG_OPTS="--libs"
 616    fi
 617
 618    CURL_LDFLAGS=$($CURL_CONFIG $CURL_CONFIG_OPTS)
 619    AC_MSG_NOTICE([Setting CURL_LDFLAGS to '$CURL_LDFLAGS'])
 620    GIT_CONF_SUBST([CURL_LDFLAGS], [$CURL_LDFLAGS])
 621fi
 622
 623fi
 624
 625
 626#
 627# Define NO_EXPAT if you do not have expat installed.  git-http-push is
 628# not built, and you cannot push using http:// and https:// transports.
 629
 630GIT_STASH_FLAGS($EXPATDIR)
 631
 632AC_CHECK_LIB([expat], [XML_ParserCreate],
 633[NO_EXPAT=],
 634[NO_EXPAT=YesPlease])
 635
 636GIT_UNSTASH_FLAGS($EXPATDIR)
 637
 638GIT_CONF_SUBST([NO_EXPAT])
 639
 640#
 641# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
 642# some Solaris installations).
 643# Define NO_ICONV if neither libc nor libiconv support iconv.
 644
 645if test -z "$NO_ICONV"; then
 646
 647GIT_STASH_FLAGS($ICONVDIR)
 648
 649AC_DEFUN([ICONVTEST_SRC],
 650[AC_LANG_PROGRAM([#include <iconv.h>],
 651 [iconv_open("", "");])])
 652
 653if test -n "$ICONVDIR"; then
 654   lib_order="-liconv -lc"
 655else
 656   lib_order="-lc -liconv"
 657fi
 658
 659NO_ICONV=YesPlease
 660
 661for l in $lib_order; do
 662    if test "$l" = "-liconv"; then
 663       NEEDS_LIBICONV=YesPlease
 664    else
 665       NEEDS_LIBICONV=
 666    fi
 667
 668    old_LIBS="$LIBS"
 669    LIBS="$LIBS $l"
 670    AC_MSG_CHECKING([for iconv in $l])
 671    AC_LINK_IFELSE([ICONVTEST_SRC],
 672        [AC_MSG_RESULT([yes])
 673        NO_ICONV=
 674        break],
 675        [AC_MSG_RESULT([no])])
 676    LIBS="$old_LIBS"
 677done
 678
 679#in case of break
 680LIBS="$old_LIBS"
 681
 682GIT_UNSTASH_FLAGS($ICONVDIR)
 683
 684GIT_CONF_SUBST([NEEDS_LIBICONV])
 685GIT_CONF_SUBST([NO_ICONV])
 686
 687if test -n "$NO_ICONV"; then
 688    NEEDS_LIBICONV=
 689fi
 690
 691fi
 692
 693#
 694# Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
 695
 696GIT_STASH_FLAGS($ZLIB_PATH)
 697
 698AC_DEFUN([ZLIBTEST_SRC], [
 699AC_LANG_PROGRAM([#include <zlib.h>],
 700 [deflateBound(0, 0);])])
 701AC_MSG_CHECKING([for deflateBound in -lz])
 702old_LIBS="$LIBS"
 703LIBS="$LIBS -lz"
 704AC_LINK_IFELSE([ZLIBTEST_SRC],
 705        [AC_MSG_RESULT([yes])],
 706        [AC_MSG_RESULT([no])
 707        NO_DEFLATE_BOUND=yes])
 708LIBS="$old_LIBS"
 709
 710GIT_UNSTASH_FLAGS($ZLIB_PATH)
 711
 712GIT_CONF_SUBST([NO_DEFLATE_BOUND])
 713
 714#
 715# Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
 716# Patrick Mauritz).
 717AC_CHECK_LIB([c], [socket],
 718[NEEDS_SOCKET=],
 719[NEEDS_SOCKET=YesPlease])
 720GIT_CONF_SUBST([NEEDS_SOCKET])
 721test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
 722
 723#
 724# The next few tests will define NEEDS_RESOLV if linking with
 725# libresolv provides some of the functions we would normally get
 726# from libc.
 727NEEDS_RESOLV=
 728#
 729# Define NO_INET_NTOP if linking with -lresolv is not enough.
 730# Solaris 2.7 in particular hos inet_ntop in -lresolv.
 731NO_INET_NTOP=
 732AC_CHECK_FUNC([inet_ntop],
 733    [],
 734    [AC_CHECK_LIB([resolv], [inet_ntop],
 735        [NEEDS_RESOLV=YesPlease],
 736        [NO_INET_NTOP=YesPlease])
 737])
 738GIT_CONF_SUBST([NO_INET_NTOP])
 739#
 740# Define NO_INET_PTON if linking with -lresolv is not enough.
 741# Solaris 2.7 in particular hos inet_pton in -lresolv.
 742NO_INET_PTON=
 743AC_CHECK_FUNC([inet_pton],
 744    [],
 745    [AC_CHECK_LIB([resolv], [inet_pton],
 746        [NEEDS_RESOLV=YesPlease],
 747        [NO_INET_PTON=YesPlease])
 748])
 749GIT_CONF_SUBST([NO_INET_PTON])
 750#
 751# Define NO_HSTRERROR if linking with -lresolv is not enough.
 752# Solaris 2.6 in particular has no hstrerror, even in -lresolv.
 753NO_HSTRERROR=
 754AC_CHECK_FUNC([hstrerror],
 755    [],
 756    [AC_CHECK_LIB([resolv], [hstrerror],
 757        [NEEDS_RESOLV=YesPlease],
 758        [NO_HSTRERROR=YesPlease])
 759])
 760GIT_CONF_SUBST([NO_HSTRERROR])
 761
 762dnl This must go after all the possible places for its initialization,
 763dnl in the AC_CHECK_FUNC invocations above.
 764GIT_CONF_SUBST([NEEDS_RESOLV])
 765#
 766# If any of the above tests determined that -lresolv is needed at
 767# build-time, also set it here for remaining configure-time checks.
 768test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv"
 769
 770AC_CHECK_LIB([c], [basename],
 771[NEEDS_LIBGEN=],
 772[NEEDS_LIBGEN=YesPlease])
 773GIT_CONF_SUBST([NEEDS_LIBGEN])
 774test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen"
 775
 776AC_DEFUN([LIBINTL_SRC], [
 777AC_LANG_PROGRAM([[
 778#include <libintl.h>
 779]],[[
 780char *msg = gettext("test");
 781]])])
 782
 783AC_MSG_CHECKING([if libc contains libintl])
 784AC_LINK_IFELSE([LIBINTL_SRC],
 785        [AC_MSG_RESULT([yes])
 786        LIBC_CONTAINS_LIBINTL=YesPlease],
 787        [AC_MSG_RESULT([no])
 788        LIBC_CONTAINS_LIBINTL=])
 789GIT_CONF_SUBST([LIBC_CONTAINS_LIBINTL])
 790
 791#
 792# Define NO_GETTEXT if you don't want Git output to be translated.
 793# A translated Git requires GNU libintl or another gettext implementation
 794AC_CHECK_HEADER([libintl.h],
 795[NO_GETTEXT=],
 796[NO_GETTEXT=YesPlease])
 797GIT_CONF_SUBST([NO_GETTEXT])
 798
 799if test -z "$NO_GETTEXT"; then
 800    test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl"
 801fi
 802
 803## Checks for header files.
 804AC_MSG_NOTICE([CHECKS for header files])
 805#
 806# Define NO_SYS_SELECT_H if you don't have sys/select.h.
 807AC_CHECK_HEADER([sys/select.h],
 808[NO_SYS_SELECT_H=],
 809[NO_SYS_SELECT_H=UnfortunatelyYes])
 810GIT_CONF_SUBST([NO_SYS_SELECT_H])
 811#
 812# Define NO_POLL_H if you don't have poll.h
 813AC_CHECK_HEADER([poll.h],
 814[NO_POLL_H=],
 815[NO_POLL_H=UnfortunatelyYes])
 816GIT_CONF_SUBST([NO_POLL_H])
 817#
 818# Define NO_SYS_POLL_H if you don't have sys/poll.h
 819AC_CHECK_HEADER([sys/poll.h],
 820[NO_SYS_POLL_H=],
 821[NO_SYS_POLL_H=UnfortunatelyYes])
 822GIT_CONF_SUBST([NO_SYS_POLL_H])
 823#
 824# Define NO_INTTYPES_H if you don't have inttypes.h
 825AC_CHECK_HEADER([inttypes.h],
 826[NO_INTTYPES_H=],
 827[NO_INTTYPES_H=UnfortunatelyYes])
 828GIT_CONF_SUBST([NO_INTTYPES_H])
 829#
 830# Define OLD_ICONV if your library has an old iconv(), where the second
 831# (input buffer pointer) parameter is declared with type (const char **).
 832AC_DEFUN([OLDICONVTEST_SRC], [
 833AC_LANG_PROGRAM([[
 834#include <iconv.h>
 835
 836extern size_t iconv(iconv_t cd,
 837                    char **inbuf, size_t *inbytesleft,
 838                    char **outbuf, size_t *outbytesleft);
 839]], [])])
 840
 841GIT_STASH_FLAGS($ICONVDIR)
 842
 843AC_MSG_CHECKING([for old iconv()])
 844AC_COMPILE_IFELSE([OLDICONVTEST_SRC],
 845        [AC_MSG_RESULT([no])],
 846        [AC_MSG_RESULT([yes])
 847        OLD_ICONV=UnfortunatelyYes])
 848
 849GIT_UNSTASH_FLAGS($ICONVDIR)
 850
 851GIT_CONF_SUBST([OLD_ICONV])
 852
 853## Checks for typedefs, structures, and compiler characteristics.
 854AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
 855#
 856TYPE_SOCKLEN_T
 857case $ac_cv_type_socklen_t in
 858  yes)  SOCKLEN_T='';;
 859  *)    SOCKLEN_T=$git_cv_socklen_t_equiv;;
 860esac
 861GIT_CONF_SUBST([SOCKLEN_T])
 862
 863#
 864# Define NO_STRUCT_ITIMERVAL if you don't have struct itimerval.
 865AC_CHECK_TYPES([struct itimerval],
 866[NO_STRUCT_ITIMERVAL=],
 867[NO_STRUCT_ITIMERVAL=UnfortunatelyYes],
 868[#include <sys/time.h>])
 869GIT_CONF_SUBST([NO_STRUCT_ITIMERVAL])
 870#
 871# Define USE_ST_TIMESPEC=YesPlease when stat.st_mtimespec.tv_nsec exists.
 872# Define NO_NSEC=YesPlease when neither stat.st_mtim.tv_nsec nor
 873# stat.st_mtimespec.tv_nsec exists.
 874AC_CHECK_MEMBER([struct stat.st_mtimespec.tv_nsec])
 875AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec])
 876if test x$ac_cv_member_struct_stat_st_mtimespec_tv_nsec = xyes; then
 877        USE_ST_TIMESPEC=YesPlease
 878        GIT_CONF_SUBST([USE_ST_TIMESPEC])
 879elif test x$ac_cv_member_struct_stat_st_mtim_tv_nsec != xyes; then
 880        NO_NSEC=YesPlease
 881        GIT_CONF_SUBST([NO_NSEC])
 882fi
 883#
 884# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
 885# d_type in struct dirent (latest Cygwin -- will be fixed soonish).
 886AC_CHECK_MEMBER(struct dirent.d_type,
 887[NO_D_TYPE_IN_DIRENT=],
 888[NO_D_TYPE_IN_DIRENT=YesPlease],
 889[#include <dirent.h>])
 890GIT_CONF_SUBST([NO_D_TYPE_IN_DIRENT])
 891#
 892# Define NO_GECOS_IN_PWENT if you don't have pw_gecos in struct passwd
 893# in the C library.
 894AC_CHECK_MEMBER(struct passwd.pw_gecos,
 895[NO_GECOS_IN_PWENT=],
 896[NO_GECOS_IN_PWENT=YesPlease],
 897[#include <pwd.h>])
 898GIT_CONF_SUBST([NO_GECOS_IN_PWENT])
 899#
 900# Define NO_SOCKADDR_STORAGE if your platform does not have struct
 901# sockaddr_storage.
 902AC_CHECK_TYPE(struct sockaddr_storage,
 903[NO_SOCKADDR_STORAGE=],
 904[NO_SOCKADDR_STORAGE=YesPlease],[
 905#include <sys/types.h>
 906#include <sys/socket.h>
 907])
 908GIT_CONF_SUBST([NO_SOCKADDR_STORAGE])
 909#
 910# Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
 911AC_CHECK_TYPE([struct addrinfo],[
 912 GIT_CHECK_FUNC([getaddrinfo],
 913  [NO_IPV6=],
 914  [NO_IPV6=YesPlease])
 915],[NO_IPV6=YesPlease],[
 916#include <sys/types.h>
 917#include <sys/socket.h>
 918#include <netdb.h>
 919])
 920GIT_CONF_SUBST([NO_IPV6])
 921#
 922# Define NO_REGEX if your C library lacks regex support with REG_STARTEND
 923# feature.
 924AC_CACHE_CHECK([whether the platform regex supports REG_STARTEND],
 925 [ac_cv_c_regex_with_reg_startend], [
 926AC_EGREP_CPP(yippeeyeswehaveit,
 927        AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
 928#include <regex.h>
 929],
 930[#ifdef REG_STARTEND
 931yippeeyeswehaveit
 932#endif
 933]),
 934        [ac_cv_c_regex_with_reg_startend=yes],
 935        [ac_cv_c_regex_with_reg_startend=no])
 936])
 937if test $ac_cv_c_regex_with_reg_startend = yes; then
 938        NO_REGEX=
 939else
 940        NO_REGEX=YesPlease
 941fi
 942GIT_CONF_SUBST([NO_REGEX])
 943#
 944# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
 945# when attempting to read from an fopen'ed directory.
 946AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
 947 [ac_cv_fread_reads_directories],
 948[
 949AC_RUN_IFELSE(
 950        [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
 951                [[
 952                FILE *f = fopen(".", "r");
 953                return f != NULL;]])],
 954        [ac_cv_fread_reads_directories=no],
 955        [ac_cv_fread_reads_directories=yes])
 956])
 957if test $ac_cv_fread_reads_directories = yes; then
 958        FREAD_READS_DIRECTORIES=UnfortunatelyYes
 959else
 960        FREAD_READS_DIRECTORIES=
 961fi
 962GIT_CONF_SUBST([FREAD_READS_DIRECTORIES])
 963#
 964# Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
 965# or vsnprintf() return -1 instead of number of characters which would
 966# have been written to the final string if enough space had been available.
 967AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
 968 [ac_cv_snprintf_returns_bogus],
 969[
 970AC_RUN_IFELSE(
 971        [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
 972                #include "stdarg.h"
 973
 974                int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
 975                {
 976                  int ret;
 977                  va_list ap;
 978                  va_start(ap, format);
 979                  ret = vsnprintf(str, maxsize, format, ap);
 980                  va_end(ap);
 981                  return ret;
 982                }],
 983                [[char buf[6];
 984                  if (test_vsnprintf(buf, 3, "%s", "12345") != 5
 985                      || strcmp(buf, "12")) return 1;
 986                  if (snprintf(buf, 3, "%s", "12345") != 5
 987                      || strcmp(buf, "12")) return 1]])],
 988        [ac_cv_snprintf_returns_bogus=no],
 989        [ac_cv_snprintf_returns_bogus=yes])
 990])
 991if test $ac_cv_snprintf_returns_bogus = yes; then
 992        SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
 993else
 994        SNPRINTF_RETURNS_BOGUS=
 995fi
 996GIT_CONF_SUBST([SNPRINTF_RETURNS_BOGUS])
 997#
 998# Define NEEDS_MODE_TRANSLATION if your OS strays from the typical file type
 999# bits in mode values.
1000AC_CACHE_CHECK([whether the platform uses typical file type bits],
1001 [ac_cv_sane_mode_bits], [
1002AC_EGREP_CPP(yippeeyeswehaveit,
1003        AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
1004[#if S_IFMT == 0170000 && \
1005        S_IFREG == 0100000 && S_IFDIR == 0040000 && S_IFLNK == 0120000 && \
1006        S_IFBLK == 0060000 && S_IFCHR == 0020000 && \
1007        S_IFIFO == 0010000 && S_IFSOCK == 0140000
1008yippeeyeswehaveit
1009#endif
1010]),
1011        [ac_cv_sane_mode_bits=yes],
1012        [ac_cv_sane_mode_bits=no])
1013])
1014if test $ac_cv_sane_mode_bits = yes; then
1015        NEEDS_MODE_TRANSLATION=
1016else
1017        NEEDS_MODE_TRANSLATION=UnfortunatelyYes
1018fi
1019GIT_CONF_SUBST([NEEDS_MODE_TRANSLATION])
1020
1021
1022## Checks for library functions.
1023## (in default C library and libraries checked by AC_CHECK_LIB)
1024AC_MSG_NOTICE([CHECKS for library functions])
1025#
1026# Define NO_LIBGEN_H if you don't have libgen.h.
1027AC_CHECK_HEADER([libgen.h],
1028[NO_LIBGEN_H=],
1029[NO_LIBGEN_H=YesPlease])
1030GIT_CONF_SUBST([NO_LIBGEN_H])
1031#
1032# Define HAVE_PATHS_H if you have paths.h.
1033AC_CHECK_HEADER([paths.h],
1034[HAVE_PATHS_H=YesPlease],
1035[HAVE_PATHS_H=])
1036GIT_CONF_SUBST([HAVE_PATHS_H])
1037#
1038# Define HAVE_LIBCHARSET_H if have libcharset.h
1039AC_CHECK_HEADER([libcharset.h],
1040[HAVE_LIBCHARSET_H=YesPlease],
1041[HAVE_LIBCHARSET_H=])
1042GIT_CONF_SUBST([HAVE_LIBCHARSET_H])
1043#
1044# Define HAVE_STRINGS_H if you have strings.h
1045AC_CHECK_HEADER([strings.h],
1046[HAVE_STRINGS_H=YesPlease],
1047[HAVE_STRINGS_H=])
1048GIT_CONF_SUBST([HAVE_STRINGS_H])
1049# Define CHARSET_LIB if libiconv does not export the locale_charset symbol
1050# and libcharset does
1051CHARSET_LIB=
1052AC_CHECK_LIB([iconv], [locale_charset],
1053       [CHARSET_LIB=-liconv],
1054       [AC_CHECK_LIB([charset], [locale_charset],
1055                     [CHARSET_LIB=-lcharset])])
1056GIT_CONF_SUBST([CHARSET_LIB])
1057#
1058# Define HAVE_CLOCK_GETTIME=YesPlease if clock_gettime is available.
1059GIT_CHECK_FUNC(clock_gettime,
1060        [HAVE_CLOCK_GETTIME=YesPlease],
1061        [HAVE_CLOCK_GETTIME=])
1062GIT_CONF_SUBST([HAVE_CLOCK_GETTIME])
1063
1064AC_DEFUN([CLOCK_MONOTONIC_SRC], [
1065AC_LANG_PROGRAM([[
1066#include <time.h>
1067clockid_t id = CLOCK_MONOTONIC;
1068]])])
1069
1070#
1071# Define HAVE_CLOCK_MONOTONIC=YesPlease if CLOCK_MONOTONIC is available.
1072AC_MSG_CHECKING([for CLOCK_MONOTONIC])
1073AC_COMPILE_IFELSE([CLOCK_MONOTONIC_SRC],
1074        [AC_MSG_RESULT([yes])
1075        HAVE_CLOCK_MONOTONIC=YesPlease],
1076        [AC_MSG_RESULT([no])
1077        HAVE_CLOCK_MONOTONIC=])
1078GIT_CONF_SUBST([HAVE_CLOCK_MONOTONIC])
1079#
1080# Define NO_SETITIMER if you don't have setitimer.
1081GIT_CHECK_FUNC(setitimer,
1082[NO_SETITIMER=],
1083[NO_SETITIMER=YesPlease])
1084GIT_CONF_SUBST([NO_SETITIMER])
1085#
1086# Define NO_STRCASESTR if you don't have strcasestr.
1087GIT_CHECK_FUNC(strcasestr,
1088[NO_STRCASESTR=],
1089[NO_STRCASESTR=YesPlease])
1090GIT_CONF_SUBST([NO_STRCASESTR])
1091#
1092# Define NO_MEMMEM if you don't have memmem.
1093GIT_CHECK_FUNC(memmem,
1094[NO_MEMMEM=],
1095[NO_MEMMEM=YesPlease])
1096GIT_CONF_SUBST([NO_MEMMEM])
1097#
1098# Define NO_STRLCPY if you don't have strlcpy.
1099GIT_CHECK_FUNC(strlcpy,
1100[NO_STRLCPY=],
1101[NO_STRLCPY=YesPlease])
1102GIT_CONF_SUBST([NO_STRLCPY])
1103#
1104# Define NO_UINTMAX_T if your platform does not have uintmax_t
1105AC_CHECK_TYPE(uintmax_t,
1106[NO_UINTMAX_T=],
1107[NO_UINTMAX_T=YesPlease],[
1108#include <inttypes.h>
1109])
1110GIT_CONF_SUBST([NO_UINTMAX_T])
1111#
1112# Define NO_STRTOUMAX if you don't have strtoumax in the C library.
1113GIT_CHECK_FUNC(strtoumax,
1114[NO_STRTOUMAX=],
1115[NO_STRTOUMAX=YesPlease])
1116GIT_CONF_SUBST([NO_STRTOUMAX])
1117#
1118# Define NO_SETENV if you don't have setenv in the C library.
1119GIT_CHECK_FUNC(setenv,
1120[NO_SETENV=],
1121[NO_SETENV=YesPlease])
1122GIT_CONF_SUBST([NO_SETENV])
1123#
1124# Define NO_UNSETENV if you don't have unsetenv in the C library.
1125GIT_CHECK_FUNC(unsetenv,
1126[NO_UNSETENV=],
1127[NO_UNSETENV=YesPlease])
1128GIT_CONF_SUBST([NO_UNSETENV])
1129#
1130# Define NO_MKDTEMP if you don't have mkdtemp in the C library.
1131GIT_CHECK_FUNC(mkdtemp,
1132[NO_MKDTEMP=],
1133[NO_MKDTEMP=YesPlease])
1134GIT_CONF_SUBST([NO_MKDTEMP])
1135#
1136# Define NO_INITGROUPS if you don't have initgroups in the C library.
1137GIT_CHECK_FUNC(initgroups,
1138[NO_INITGROUPS=],
1139[NO_INITGROUPS=YesPlease])
1140GIT_CONF_SUBST([NO_INITGROUPS])
1141#
1142# Define HAVE_GETDELIM if you have getdelim in the C library.
1143GIT_CHECK_FUNC(getdelim,
1144[HAVE_GETDELIM=YesPlease],
1145[HAVE_GETDELIM=])
1146GIT_CONF_SUBST([HAVE_GETDELIM])
1147#
1148#
1149# Define NO_MMAP if you want to avoid mmap.
1150#
1151# Define NO_ICONV if your libc does not properly support iconv.
1152
1153AC_DEFUN([BSD_SYSCTL_SRC], [
1154AC_LANG_PROGRAM([[
1155#include <stddef.h>
1156#include <sys/types.h>
1157#include <sys/sysctl.h>
1158]],[[
1159int val, mib[2];
1160size_t len;
1161mib[0] = CTL_HW;
1162mib[1] = 1;
1163len = sizeof(val);
1164return sysctl(mib, 2, &val, &len, NULL, 0) ? 1 : 0;
1165]])])
1166
1167#
1168# Define HAVE_BSD_SYSCTL=YesPlease if a BSD-compatible sysctl function is available.
1169AC_MSG_CHECKING([for BSD sysctl])
1170AC_COMPILE_IFELSE([BSD_SYSCTL_SRC],
1171        [AC_MSG_RESULT([yes])
1172        HAVE_BSD_SYSCTL=YesPlease],
1173        [AC_MSG_RESULT([no])
1174        HAVE_BSD_SYSCTL=])
1175GIT_CONF_SUBST([HAVE_BSD_SYSCTL])
1176
1177## Other checks.
1178# Define USE_PIC if you need the main git objects to be built with -fPIC
1179# in order to build and link perl/Git.so.  x86-64 seems to need this.
1180#
1181# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
1182# Enable it on Windows.  By default, symrefs are still used.
1183#
1184# Define NO_PTHREADS if we do not have pthreads.
1185#
1186# Define PTHREAD_LIBS to the linker flag used for Pthread support.
1187AC_DEFUN([PTHREADTEST_SRC], [
1188AC_LANG_PROGRAM([[
1189#include <pthread.h>
1190static void *noop(void *ignore) { return ignore; }
1191]], [[
1192        pthread_mutex_t test_mutex;
1193        pthread_key_t test_key;
1194        pthread_t th;
1195        int retcode = 0;
1196        void *ret = (void *)0;
1197        retcode |= pthread_key_create(&test_key, (void *)0);
1198        retcode |= pthread_mutex_init(&test_mutex,(void *)0);
1199        retcode |= pthread_mutex_lock(&test_mutex);
1200        retcode |= pthread_mutex_unlock(&test_mutex);
1201        retcode |= pthread_create(&th, ret, noop, ret);
1202        retcode |= pthread_join(th, &ret);
1203        return retcode;
1204]])])
1205
1206dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(
1207dnl   [[#include <pthread.h>]],
1208dnl   [[pthread_mutex_t test_mutex;]]
1209dnl )])
1210
1211NO_PTHREADS=UnfortunatelyYes
1212PTHREAD_LIBS=
1213
1214if test -n "$USER_NOPTHREAD"; then
1215   AC_MSG_NOTICE([Skipping POSIX Threads at user request.])
1216# handle these separately since PTHREAD_CFLAGS could be '-lpthreads
1217# -D_REENTRANT' or some such.
1218elif test -z "$PTHREAD_CFLAGS"; then
1219  threads_found=no
1220  # Attempt to compile and link some code using pthreads to determine
1221  # required linker flags. The order is somewhat important here: We
1222  # first try it without any extra flags, to catch systems where
1223  # pthreads are part of the C library, then go on testing various other
1224  # flags. We do so to avoid false positives. For example, on Mac OS X
1225  # pthreads are part of the C library; moreover, the compiler allows us
1226  # to add "-mt" to the CFLAGS (although it will do nothing except
1227  # trigger a warning about an unused flag). Hence if we checked for
1228  # "-mt" before "" we would end up picking it. But unfortunately this
1229  # would then trigger compiler warnings on every single file we compile.
1230  for opt in "" -mt -pthread -lpthread; do
1231     old_CFLAGS="$CFLAGS"
1232     old_LIBS="$LIBS"
1233     case "$opt" in
1234        -l*)  LIBS="$opt $LIBS" ;;
1235        *)    CFLAGS="$opt $CFLAGS" ;;
1236     esac
1237
1238     AC_MSG_CHECKING([for POSIX Threads with '$opt'])
1239     AC_LINK_IFELSE([PTHREADTEST_SRC],
1240        [AC_MSG_RESULT([yes])
1241                NO_PTHREADS=
1242                PTHREAD_LIBS="$opt"
1243                PTHREAD_CFLAGS="$opt"
1244                threads_found=yes
1245                break
1246        ],
1247        [AC_MSG_RESULT([no])])
1248      CFLAGS="$old_CFLAGS"
1249      LIBS="$old_LIBS"
1250  done
1251  if test $threads_found != yes; then
1252    AC_CHECK_LIB([pthread], [pthread_create],
1253        [PTHREAD_LIBS="-lpthread"],
1254        [NO_PTHREADS=UnfortunatelyYes])
1255  fi
1256else
1257  old_CFLAGS="$CFLAGS"
1258  CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
1259  AC_MSG_CHECKING([for POSIX Threads with '$PTHREAD_CFLAGS'])
1260  AC_LINK_IFELSE([PTHREADTEST_SRC],
1261        [AC_MSG_RESULT([yes])
1262                NO_PTHREADS=
1263                PTHREAD_LIBS="$PTHREAD_CFLAGS"
1264        ],
1265        [AC_MSG_RESULT([no])])
1266
1267  CFLAGS="$old_CFLAGS"
1268fi
1269
1270CFLAGS="$old_CFLAGS"
1271
1272GIT_CONF_SUBST([PTHREAD_CFLAGS])
1273GIT_CONF_SUBST([PTHREAD_LIBS])
1274GIT_CONF_SUBST([NO_PTHREADS])
1275
1276## Output files
1277AC_CONFIG_FILES(["${config_file}":"${config_in}"])
1278AC_OUTPUT