configure.ac

   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 ${config_file}.
   9 AC_DEFUN([GIT_CONF_SUBST],
  10 [AC_REQUIRE([GIT_CONF_SUBST_INIT])
  11 config_appended_defs="$config_appended_defs${newline}dnl
  12 $1=m4_if([$#],[1],[${$1}],[$2])"])
  13
  14 # GIT_CONF_SUBST_INIT
  15 # -------------------
  16 # Prepare shell variables and autoconf machine required by later calls
  17 # to GIT_CONF_SUBST.
  18 AC_DEFUN([GIT_CONF_SUBST_INIT],
  19     [config_appended_defs=; newline='
  20 '
  21     AC_CONFIG_COMMANDS([$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.
  31 AC_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.
  44 AC_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
  72 AC_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.
  93 AC_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.
 112 AC_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.
 122 AC_DEFUN([GIT_STASH_FLAGS],[
 123 if test -n "$1"; then
 124    old_CPPFLAGS="$CPPFLAGS"
 125    old_LDFLAGS="$LDFLAGS"
 126    CPPFLAGS="-I$1/include $CPPFLAGS"
 127    LDFLAGS="-L$1/$lib $LDFLAGS"
 128 fi
 129 ])
 130
 131 dnl
 132 dnl GIT_UNSTASH_FLAGS(BASEPATH_VAR)
 133 dnl -----------------------------
 134 dnl Restore the stashed *FLAGS values.
 135 AC_DEFUN([GIT_UNSTASH_FLAGS],[
 136 if test -n "$1"; then
 137    CPPFLAGS="$old_CPPFLAGS"
 138    LDFLAGS="$old_LDFLAGS"
 139 fi
 140 ])
 141
 142 ## Configure body starts here.
 143
 144 AC_PREREQ(2.59)
 145 AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org])
 146
 147 AC_CONFIG_SRCDIR([git.c])
 148
 149 config_file=config.mak.autogen
 150 config_in=config.mak.in
 151
 152 GIT_CONF_SUBST([AUTOCONFIGURED], [YesPlease])
 153
 154 # Directories holding "saner" versions of common or POSIX binaries.
 155 AC_ARG_WITH([sane-tool-path],
 156   [AS_HELP_STRING(
 157     [--with-sane-tool-path=DIR-1[[:DIR-2...:DIR-n]]],
 158     [Directories to prepend to PATH in build system and generated scripts])],
 159   [if test "$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)
 175 AC_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
 186 if test -z "$lib"; then
 187    AC_MSG_NOTICE([Setting lib to 'lib' (the default)])
 188    lib=lib
 189 fi
 190
 191 AC_ARG_ENABLE([pthreads],
 192  [AS_HELP_STRING([--enable-pthreads=FLAGS],
 193   [FLAGS is the value to pass to the compiler to enable POSIX Threads.]
 194   [The default if FLAGS is not specified is to try first -pthread]
 195   [and then -lpthread.]
 196   [--disable-pthreads will disable threading.])],
 197 [
 198 if test "x$enableval" = "xyes"; then
 199    AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads])
 200 elif test "x$enableval" != "xno"; then
 201    PTHREAD_CFLAGS=$enableval
 202    AC_MSG_NOTICE([Setting '$PTHREAD_CFLAGS' as the FLAGS to enable POSIX Threads])
 203 else
 204    AC_MSG_NOTICE([POSIX Threads will be disabled.])
 205    NO_PTHREADS=YesPlease
 206    USER_NOPTHREAD=1
 207 fi],
 208 [
 209    AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads.])
 210 ])
 211
 212 # Define option to enable JavaScript minification
 213 AC_ARG_ENABLE([jsmin],
 214 [AS_HELP_STRING([--enable-jsmin=PATH],
 215   [PATH is the name of a JavaScript minifier or the absolute path to one.])],
 216 [
 217   JSMIN=$enableval;
 218   AC_MSG_NOTICE([Setting JSMIN to '$JSMIN' to enable JavaScript minifying])
 219   GIT_CONF_SUBST([JSMIN])
 220 ])
 221
 222 # Define option to enable CSS minification
 223 AC_ARG_ENABLE([cssmin],
 224 [AS_HELP_STRING([--enable-cssmin=PATH],
 225   [PATH is the name of a CSS minifier or the absolute path to one.])],
 226 [
 227   CSSMIN=$enableval;
 228   AC_MSG_NOTICE([Setting CSSMIN to '$CSSMIN' to enable CSS minifying])
 229   GIT_CONF_SUBST([CSSMIN])
 230 ])
 231
 232 ## Site configuration (override autodetection)
 233 ## --with-PACKAGE[=ARG] and --without-PACKAGE
 234 AC_MSG_NOTICE([CHECKS for site configuration])
 235 #
 236 # Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
 237 # tests.  These tests take up a significant amount of the total test time
 238 # but are not needed unless you plan to talk to SVN repos.
 239 #
 240 # Define PPC_SHA1 environment variable when running make to make use of
 241 # a bundled SHA1 routine optimized for PowerPC.
 242 #
 243 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
 244 # This also implies BLK_SHA1.
 245 #
 246 # Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
 247 # /foo/bar/include and /foo/bar/lib directories.
 248 AC_ARG_WITH(openssl,
 249 AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
 250 AS_HELP_STRING([],              [ARG can be prefix for openssl library and headers]),
 251 GIT_PARSE_WITH([openssl]))
 252
 253 # Define USE_LIBPCRE if you have and want to use libpcre. Various
 254 # commands such as log and grep offer runtime options to use
 255 # Perl-compatible regular expressions instead of standard or extended
 256 # POSIX regular expressions.
 257 #
 258 # Currently USE_LIBPCRE is a synonym for USE_LIBPCRE1, define
 259 # USE_LIBPCRE2 instead if you'd like to use version 2 of the PCRE
 260 # library. The USE_LIBPCRE flag will likely be changed to mean v2 by
 261 # default in future releases.
 262 #
 263 # Define LIBPCREDIR=/foo/bar if your PCRE header and library files are in
 264 # /foo/bar/include and /foo/bar/lib directories.
 265 #
 266 AC_ARG_WITH(libpcre,
 267 AS_HELP_STRING([--with-libpcre],[synonym for --with-libpcre1]),
 268     if test "$withval" = "no"; then
 269         USE_LIBPCRE1=
 270     elif test "$withval" = "yes"; then
 271         USE_LIBPCRE1=YesPlease
 272     else
 273         USE_LIBPCRE1=YesPlease
 274         LIBPCREDIR=$withval
 275         AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
 276         dnl USE_LIBPCRE1 can still be modified below, so don't substitute
 277         dnl it yet.
 278         GIT_CONF_SUBST([LIBPCREDIR])
 279     fi)
 280
 281 AC_ARG_WITH(libpcre1,
 282 AS_HELP_STRING([--with-libpcre1],[support Perl-compatible regexes via libpcre1 (default is NO)])
 283 AS_HELP_STRING([],           [ARG can be also prefix for libpcre library and headers]),
 284     if test "$withval" = "no"; then
 285         USE_LIBPCRE1=
 286     elif test "$withval" = "yes"; then
 287         USE_LIBPCRE1=YesPlease
 288     else
 289         USE_LIBPCRE1=YesPlease
 290         LIBPCREDIR=$withval
 291         AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
 292         dnl USE_LIBPCRE1 can still be modified below, so don't substitute
 293         dnl it yet.
 294         GIT_CONF_SUBST([LIBPCREDIR])
 295     fi)
 296
 297 AC_ARG_WITH(libpcre2,
 298 AS_HELP_STRING([--with-libpcre2],[support Perl-compatible regexes via libpcre2 (default is NO)])
 299 AS_HELP_STRING([],           [ARG can be also prefix for libpcre library and headers]),
 300     if test -n "$USE_LIBPCRE1"; then
 301         AC_MSG_ERROR([Only supply one of --with-libpcre1 or --with-libpcre2!])
 302     fi
 303
 304     if test "$withval" = "no"; then
 305         USE_LIBPCRE2=
 306     elif test "$withval" = "yes"; then
 307         USE_LIBPCRE2=YesPlease
 308     else
 309         USE_LIBPCRE2=YesPlease
 310         LIBPCREDIR=$withval
 311         AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
 312         dnl USE_LIBPCRE2 can still be modified below, so don't substitute
 313         dnl it yet.
 314         GIT_CONF_SUBST([LIBPCREDIR])
 315     fi)
 316 #
 317 # Define HAVE_ALLOCA_H if you have working alloca(3) defined in that header.
 318 AC_FUNC_ALLOCA
 319 case $ac_cv_working_alloca_h in
 320     yes)    HAVE_ALLOCA_H=YesPlease;;
 321     *)      HAVE_ALLOCA_H='';;
 322 esac
 323 GIT_CONF_SUBST([HAVE_ALLOCA_H])
 324 #
 325 # Define NO_CURL if you do not have curl installed.  git-http-pull and
 326 # git-http-push are not built, and you cannot use http:// and https://
 327 # transports.
 328 #
 329 # Define CURLDIR=/foo/bar if your curl header and library files are in
 330 # /foo/bar/include and /foo/bar/lib directories.
 331 AC_ARG_WITH(curl,
 332 AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
 333 AS_HELP_STRING([],           [ARG can be also prefix for curl library and headers]),
 334 GIT_PARSE_WITH(curl))
 335 #
 336 # Define NO_EXPAT if you do not have expat installed.  git-http-push is
 337 # not built, and you cannot push using http:// and https:// transports.
 338 #
 339 # Define EXPATDIR=/foo/bar if your expat header and library files are in
 340 # /foo/bar/include and /foo/bar/lib directories.
 341 AC_ARG_WITH(expat,
 342 AS_HELP_STRING([--with-expat],
 343 [support git-push using http:// and https:// transports via WebDAV (default is YES)])
 344 AS_HELP_STRING([],            [ARG can be also prefix for expat library and headers]),
 345 GIT_PARSE_WITH(expat))
 346 #
 347 # Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
 348 # installed in /sw, but don't want GIT to link against any libraries
 349 # installed there.  If defined you may specify your own (or Fink's)
 350 # include directories and library directories by defining CFLAGS
 351 # and LDFLAGS appropriately.
 352 #
 353 # Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
 354 # have DarwinPorts installed in /opt/local, but don't want GIT to
 355 # link against any libraries installed there.  If defined you may
 356 # specify your own (or DarwinPort's) include directories and
 357 # library directories by defining CFLAGS and LDFLAGS appropriately.
 358 #
 359 # Define NO_MMAP if you want to avoid mmap.
 360 #
 361 # Define NO_ICONV if your libc does not properly support iconv.
 362 AC_ARG_WITH(iconv,
 363 AS_HELP_STRING([--without-iconv],
 364 [if your architecture doesn't properly support iconv])
 365 AS_HELP_STRING([--with-iconv=PATH],
 366 [PATH is prefix for libiconv library and headers])
 367 AS_HELP_STRING([],
 368 [used only if you need linking with libiconv]),
 369 GIT_PARSE_WITH(iconv))
 370
 371 ## --enable-FEATURE[=ARG] and --disable-FEATURE
 372 #
 373 # Define USE_NSEC below if you want git to care about sub-second file mtimes
 374 # and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
 375 # it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
 376 # randomly break unless your underlying filesystem supports those sub-second
 377 # times (my ext3 doesn't).
 378 #
 379 # Define USE_STDEV below if you want git to care about the underlying device
 380 # change being considered an inode change from the update-index perspective.
 381
 382 #
 383 # Allow user to set ETC_GITCONFIG variable
 384 GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG,
 385                         Use VALUE instead of /etc/gitconfig as the
 386                         global git configuration file.
 387                         If VALUE is not fully qualified it will be interpreted
 388                         as a path relative to the computed prefix at runtime.)
 389
 390 #
 391 # Allow user to set ETC_GITATTRIBUTES variable
 392 GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES,
 393                         Use VALUE instead of /etc/gitattributes as the
 394                         global git attributes file.
 395                         If VALUE is not fully qualified it will be interpreted
 396                         as a path relative to the computed prefix at runtime.)
 397
 398 #
 399 # Allow user to set the default pager
 400 GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER,
 401                         Use VALUE as the fall-back pager instead of 'less'.
 402                         This is used by things like 'git log' when the user
 403                         does not specify a pager to use through alternate
 404                         methods. eg: /usr/bin/pager)
 405 #
 406 # Allow user to set the default editor
 407 GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR,
 408                         Use VALUE as the fall-back editor instead of 'vi'.
 409                         This is used by things like 'git commit' when the user
 410                         does not specify a preferred editor through other
 411                         methods. eg: /usr/bin/editor)
 412
 413 #
 414 # Define SHELL_PATH to provide path to shell.
 415 GIT_ARG_SET_PATH(shell)
 416 #
 417 # Define PERL_PATH to provide path to Perl.
 418 GIT_ARG_SET_PATH(perl)
 419 #
 420 # Define PYTHON_PATH to provide path to Python.
 421 GIT_ARG_SET_PATH(python, allow-without)
 422 #
 423 # Define ZLIB_PATH to provide path to zlib.
 424 GIT_ARG_SET_PATH(zlib)
 425 #
 426 # Declare the with-tcltk/without-tcltk options.
 427 AC_ARG_WITH(tcltk,
 428 AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
 429 AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
 430 AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
 431 AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),
 432 GIT_PARSE_WITH(tcltk))
 433 #
 434
 435
 436 ## Checks for programs.
 437 AC_MSG_NOTICE([CHECKS for programs])
 438 #
 439 AC_PROG_CC([cc gcc])
 440 AC_C_INLINE
 441 case $ac_cv_c_inline in
 442   inline | yes | no) INLINE='';;
 443   *)                 INLINE=$ac_cv_c_inline ;;
 444 esac
 445 GIT_CONF_SUBST([INLINE])
 446
 447 # which switch to pass runtime path to dynamic libraries to the linker
 448 AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [
 449    SAVE_LDFLAGS="${LDFLAGS}"
 450    LDFLAGS="${SAVE_LDFLAGS} -R /"
 451    AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no])
 452    LDFLAGS="${SAVE_LDFLAGS}"
 453 ])
 454 if test "$git_cv_ld_dashr" = "yes"; then
 455    CC_LD_DYNPATH=-R
 456 else
 457    AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [
 458       SAVE_LDFLAGS="${LDFLAGS}"
 459       LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/"
 460       AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no])
 461       LDFLAGS="${SAVE_LDFLAGS}"
 462    ])
 463    if test "$git_cv_ld_wl_rpath" = "yes"; then
 464       CC_LD_DYNPATH=-Wl,-rpath,
 465    else
 466       AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [
 467          SAVE_LDFLAGS="${LDFLAGS}"
 468          LDFLAGS="${SAVE_LDFLAGS} -rpath /"
 469          AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no])
 470          LDFLAGS="${SAVE_LDFLAGS}"
 471       ])
 472       if test "$git_cv_ld_rpath" = "yes"; then
 473          CC_LD_DYNPATH=-rpath
 474       else
 475          CC_LD_DYNPATH=
 476          AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
 477       fi
 478    fi
 479 fi
 480 GIT_CONF_SUBST([CC_LD_DYNPATH])
 481 #AC_PROG_INSTALL                # needs install-sh or install.sh in sources
 482 AC_CHECK_TOOLS(AR, [gar ar], :)
 483 AC_CHECK_PROGS(TAR, [gtar tar])
 484 AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff])
 485 # TCLTK_PATH will be set to some value if we want Tcl/Tk
 486 # or will be empty otherwise.
 487 if test -n "$NO_TCLTK"; then
 488   TCLTK_PATH=
 489 else
 490   if test "$with_tcltk" = ""; then
 491   # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
 492     TCLTK_PATH=wish
 493   elif test "$with_tcltk" = "yes"; then
 494   # Tcl/Tk check requested.
 495     AC_CHECK_PROGS(TCLTK_PATH, [wish], )
 496   else
 497     AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
 498     TCLTK_PATH="$with_tcltk"
 499   fi
 500 fi
 501 GIT_CONF_SUBST([TCLTK_PATH])
 502 AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
 503 if test -n "$ASCIIDOC"; then
 504         AC_MSG_CHECKING([for asciidoc version])
 505         asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
 506         case "${asciidoc_version}" in
 507         asciidoc' '8*)
 508                 AC_MSG_RESULT([${asciidoc_version}])
 509                 ;;
 510         *)
 511                 AC_MSG_RESULT([${asciidoc_version} (unknown)])
 512                 ;;
 513         esac
 514 fi
 515
 516 if grep -a ascii configure.ac >/dev/null; then
 517   AC_MSG_RESULT([Using 'grep -a' for sane_grep])
 518   SANE_TEXT_GREP=-a
 519 else
 520   SANE_TEXT_GREP=
 521 fi
 522 GIT_CONF_SUBST([SANE_TEXT_GREP])
 523
 524 ## Checks for libraries.
 525 AC_MSG_NOTICE([CHECKS for libraries])
 526 #
 527 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
 528 # Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
 529
 530 GIT_STASH_FLAGS($OPENSSLDIR)
 531
 532 AC_CHECK_LIB([crypto], [SHA1_Init],
 533 [NEEDS_SSL_WITH_CRYPTO=],
 534 [AC_CHECK_LIB([ssl], [SHA1_Init],
 535  [NEEDS_SSL_WITH_CRYPTO=YesPlease NO_OPENSSL=],
 536  [NEEDS_SSL_WITH_CRYPTO=          NO_OPENSSL=YesPlease])])
 537
 538 GIT_UNSTASH_FLAGS($OPENSSLDIR)
 539
 540 GIT_CONF_SUBST([NEEDS_SSL_WITH_CRYPTO])
 541 GIT_CONF_SUBST([NO_OPENSSL])
 542
 543 #
 544 # Handle the USE_LIBPCRE1 and USE_LIBPCRE2 options potentially set
 545 # above.
 546 #
 547
 548 if test -n "$USE_LIBPCRE1"; then
 549
 550 GIT_STASH_FLAGS($LIBPCREDIR)
 551
 552 AC_CHECK_LIB([pcre], [pcre_version],
 553 [USE_LIBPCRE=YesPlease],
 554 [USE_LIBPCRE=])
 555
 556 GIT_UNSTASH_FLAGS($LIBPCREDIR)
 557
 558 GIT_CONF_SUBST([USE_LIBPCRE1])
 559
 560 fi
 561
 562
 563 if test -n "$USE_LIBPCRE2"; then
 564
 565 GIT_STASH_FLAGS($LIBPCREDIR)
 566
 567 AC_CHECK_LIB([pcre2-8], [pcre2_config_8],
 568 [USE_LIBPCRE2=YesPlease],
 569 [USE_LIBPCRE2=])
 570
 571 GIT_UNSTASH_FLAGS($LIBPCREDIR)
 572
 573 GIT_CONF_SUBST([USE_LIBPCRE2])
 574
 575 fi
 576
 577 #
 578 # Define NO_CURL if you do not have libcurl installed.  git-http-pull and
 579 # git-http-push are not built, and you cannot use http:// and https://
 580 # transports.
 581
 582 GIT_STASH_FLAGS($CURLDIR)
 583
 584 AC_CHECK_LIB([curl], [curl_global_init],
 585 [NO_CURL=],
 586 [NO_CURL=YesPlease])
 587
 588 GIT_UNSTASH_FLAGS($CURLDIR)
 589
 590 GIT_CONF_SUBST([NO_CURL])
 591
 592 if test -z "$NO_CURL"; then
 593
 594 AC_CHECK_PROG([CURL_CONFIG], [curl-config],
 595 [curl-config],
 596 [no])
 597
 598 if test $CURL_CONFIG != no; then
 599     GIT_CONF_SUBST([CURL_CONFIG])
 600     if test -z "${NO_OPENSSL}"; then
 601       AC_MSG_CHECKING([if Curl supports SSL])
 602       if test $(curl-config --features|grep SSL) = SSL; then
 603          NEEDS_SSL_WITH_CURL=YesPlease
 604          AC_MSG_RESULT([yes])
 605       else
 606          NEEDS_SSL_WITH_CURL=
 607          AC_MSG_RESULT([no])
 608       fi
 609       GIT_CONF_SUBST([NEEDS_SSL_WITH_CURL])
 610     fi
 611 fi
 612
 613 fi
 614
 615
 616 #
 617 # Define NO_EXPAT if you do not have expat installed.  git-http-push is
 618 # not built, and you cannot push using http:// and https:// transports.
 619
 620 GIT_STASH_FLAGS($EXPATDIR)
 621
 622 AC_CHECK_LIB([expat], [XML_ParserCreate],
 623 [NO_EXPAT=],
 624 [NO_EXPAT=YesPlease])
 625
 626 GIT_UNSTASH_FLAGS($EXPATDIR)
 627
 628 GIT_CONF_SUBST([NO_EXPAT])
 629
 630 #
 631 # Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
 632 # some Solaris installations).
 633 # Define NO_ICONV if neither libc nor libiconv support iconv.
 634
 635 if test -z "$NO_ICONV"; then
 636
 637 GIT_STASH_FLAGS($ICONVDIR)
 638
 639 AC_DEFUN([ICONVTEST_SRC],
 640 [AC_LANG_PROGRAM([#include <iconv.h>],
 641  [iconv_open("", "");])])
 642
 643 if test -n "$ICONVDIR"; then
 644    lib_order="-liconv -lc"
 645 else
 646    lib_order="-lc -liconv"
 647 fi
 648
 649 NO_ICONV=YesPlease
 650
 651 for l in $lib_order; do
 652     if test "$l" = "-liconv"; then
 653        NEEDS_LIBICONV=YesPlease
 654     else
 655        NEEDS_LIBICONV=
 656     fi
 657
 658     old_LIBS="$LIBS"
 659     LIBS="$LIBS $l"
 660     AC_MSG_CHECKING([for iconv in $l])
 661     AC_LINK_IFELSE([ICONVTEST_SRC],
 662         [AC_MSG_RESULT([yes])
 663         NO_ICONV=
 664         break],
 665         [AC_MSG_RESULT([no])])
 666     LIBS="$old_LIBS"
 667 done
 668
 669 #in case of break
 670 LIBS="$old_LIBS"
 671
 672 GIT_UNSTASH_FLAGS($ICONVDIR)
 673
 674 GIT_CONF_SUBST([NEEDS_LIBICONV])
 675 GIT_CONF_SUBST([NO_ICONV])
 676
 677 if test -n "$NO_ICONV"; then
 678     NEEDS_LIBICONV=
 679 fi
 680
 681 fi
 682
 683 #
 684 # Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
 685
 686 GIT_STASH_FLAGS($ZLIB_PATH)
 687
 688 AC_DEFUN([ZLIBTEST_SRC], [
 689 AC_LANG_PROGRAM([#include <zlib.h>],
 690  [deflateBound(0, 0);])])
 691 AC_MSG_CHECKING([for deflateBound in -lz])
 692 old_LIBS="$LIBS"
 693 LIBS="$LIBS -lz"
 694 AC_LINK_IFELSE([ZLIBTEST_SRC],
 695         [AC_MSG_RESULT([yes])],
 696         [AC_MSG_RESULT([no])
 697         NO_DEFLATE_BOUND=yes])
 698 LIBS="$old_LIBS"
 699
 700 GIT_UNSTASH_FLAGS($ZLIB_PATH)
 701
 702 GIT_CONF_SUBST([NO_DEFLATE_BOUND])
 703
 704 #
 705 # Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
 706 # Patrick Mauritz).
 707 AC_CHECK_LIB([c], [socket],
 708 [NEEDS_SOCKET=],
 709 [NEEDS_SOCKET=YesPlease])
 710 GIT_CONF_SUBST([NEEDS_SOCKET])
 711 test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
 712
 713 #
 714 # The next few tests will define NEEDS_RESOLV if linking with
 715 # libresolv provides some of the functions we would normally get
 716 # from libc.
 717 NEEDS_RESOLV=
 718 #
 719 # Define NO_INET_NTOP if linking with -lresolv is not enough.
 720 # Solaris 2.7 in particular hos inet_ntop in -lresolv.
 721 NO_INET_NTOP=
 722 AC_CHECK_FUNC([inet_ntop],
 723     [],
 724     [AC_CHECK_LIB([resolv], [inet_ntop],
 725         [NEEDS_RESOLV=YesPlease],
 726         [NO_INET_NTOP=YesPlease])
 727 ])
 728 GIT_CONF_SUBST([NO_INET_NTOP])
 729 #
 730 # Define NO_INET_PTON if linking with -lresolv is not enough.
 731 # Solaris 2.7 in particular hos inet_pton in -lresolv.
 732 NO_INET_PTON=
 733 AC_CHECK_FUNC([inet_pton],
 734     [],
 735     [AC_CHECK_LIB([resolv], [inet_pton],
 736         [NEEDS_RESOLV=YesPlease],
 737         [NO_INET_PTON=YesPlease])
 738 ])
 739 GIT_CONF_SUBST([NO_INET_PTON])
 740 #
 741 # Define NO_HSTRERROR if linking with -lresolv is not enough.
 742 # Solaris 2.6 in particular has no hstrerror, even in -lresolv.
 743 NO_HSTRERROR=
 744 AC_CHECK_FUNC([hstrerror],
 745     [],
 746     [AC_CHECK_LIB([resolv], [hstrerror],
 747         [NEEDS_RESOLV=YesPlease],
 748         [NO_HSTRERROR=YesPlease])
 749 ])
 750 GIT_CONF_SUBST([NO_HSTRERROR])
 751
 752 dnl This must go after all the possible places for its initialization,
 753 dnl in the AC_CHECK_FUNC invocations above.
 754 GIT_CONF_SUBST([NEEDS_RESOLV])
 755 #
 756 # If any of the above tests determined that -lresolv is needed at
 757 # build-time, also set it here for remaining configure-time checks.
 758 test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv"
 759
 760 AC_CHECK_LIB([c], [basename],
 761 [NEEDS_LIBGEN=],
 762 [NEEDS_LIBGEN=YesPlease])
 763 GIT_CONF_SUBST([NEEDS_LIBGEN])
 764 test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen"
 765
 766 AC_CHECK_LIB([c], [gettext],
 767 [LIBC_CONTAINS_LIBINTL=YesPlease],
 768 [LIBC_CONTAINS_LIBINTL=])
 769 GIT_CONF_SUBST([LIBC_CONTAINS_LIBINTL])
 770
 771 #
 772 # Define NO_GETTEXT if you don't want Git output to be translated.
 773 # A translated Git requires GNU libintl or another gettext implementation
 774 AC_CHECK_HEADER([libintl.h],
 775 [NO_GETTEXT=],
 776 [NO_GETTEXT=YesPlease])
 777 GIT_CONF_SUBST([NO_GETTEXT])
 778
 779 if test -z "$NO_GETTEXT"; then
 780     test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl"
 781 fi
 782
 783 ## Checks for header files.
 784 AC_MSG_NOTICE([CHECKS for header files])
 785 #
 786 # Define NO_SYS_SELECT_H if you don't have sys/select.h.
 787 AC_CHECK_HEADER([sys/select.h],
 788 [NO_SYS_SELECT_H=],
 789 [NO_SYS_SELECT_H=UnfortunatelyYes])
 790 GIT_CONF_SUBST([NO_SYS_SELECT_H])
 791 #
 792 # Define NO_SYS_POLL_H if you don't have sys/poll.h
 793 AC_CHECK_HEADER([sys/poll.h],
 794 [NO_SYS_POLL_H=],
 795 [NO_SYS_POLL_H=UnfortunatelyYes])
 796 GIT_CONF_SUBST([NO_SYS_POLL_H])
 797 #
 798 # Define NO_INTTYPES_H if you don't have inttypes.h
 799 AC_CHECK_HEADER([inttypes.h],
 800 [NO_INTTYPES_H=],
 801 [NO_INTTYPES_H=UnfortunatelyYes])
 802 GIT_CONF_SUBST([NO_INTTYPES_H])
 803 #
 804 # Define OLD_ICONV if your library has an old iconv(), where the second
 805 # (input buffer pointer) parameter is declared with type (const char **).
 806 AC_DEFUN([OLDICONVTEST_SRC], [
 807 AC_LANG_PROGRAM([[
 808 #include <iconv.h>
 809
 810 extern size_t iconv(iconv_t cd,
 811                     char **inbuf, size_t *inbytesleft,
 812                     char **outbuf, size_t *outbytesleft);
 813 ]], [])])
 814
 815 GIT_STASH_FLAGS($ICONVDIR)
 816
 817 AC_MSG_CHECKING([for old iconv()])
 818 AC_COMPILE_IFELSE([OLDICONVTEST_SRC],
 819         [AC_MSG_RESULT([no])],
 820         [AC_MSG_RESULT([yes])
 821         OLD_ICONV=UnfortunatelyYes])
 822
 823 GIT_UNSTASH_FLAGS($ICONVDIR)
 824
 825 GIT_CONF_SUBST([OLD_ICONV])
 826
 827 ## Checks for typedefs, structures, and compiler characteristics.
 828 AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
 829 #
 830 TYPE_SOCKLEN_T
 831 case $ac_cv_type_socklen_t in
 832   yes)  SOCKLEN_T='';;
 833   *)    SOCKLEN_T=$git_cv_socklen_t_equiv;;
 834 esac
 835 GIT_CONF_SUBST([SOCKLEN_T])
 836
 837 #
 838 # Define NO_STRUCT_ITIMERVAL if you don't have struct itimerval.
 839 AC_CHECK_TYPES([struct itimerval],
 840 [NO_STRUCT_ITIMERVAL=],
 841 [NO_STRUCT_ITIMERVAL=UnfortunatelyYes],
 842 [#include <sys/time.h>])
 843 GIT_CONF_SUBST([NO_STRUCT_ITIMERVAL])
 844 #
 845 # Define USE_ST_TIMESPEC=YesPlease when stat.st_mtimespec.tv_nsec exists.
 846 # Define NO_NSEC=YesPlease when neither stat.st_mtim.tv_nsec nor
 847 # stat.st_mtimespec.tv_nsec exists.
 848 AC_CHECK_MEMBER([struct stat.st_mtimespec.tv_nsec])
 849 AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec])
 850 if test x$ac_cv_member_struct_stat_st_mtimespec_tv_nsec = xyes; then
 851         USE_ST_TIMESPEC=YesPlease
 852         GIT_CONF_SUBST([USE_ST_TIMESPEC])
 853 elif test x$ac_cv_member_struct_stat_st_mtim_tv_nsec != xyes; then
 854         NO_NSEC=YesPlease
 855         GIT_CONF_SUBST([NO_NSEC])
 856 fi
 857 #
 858 # Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
 859 # d_type in struct dirent (latest Cygwin -- will be fixed soonish).
 860 AC_CHECK_MEMBER(struct dirent.d_type,
 861 [NO_D_TYPE_IN_DIRENT=],
 862 [NO_D_TYPE_IN_DIRENT=YesPlease],
 863 [#include <dirent.h>])
 864 GIT_CONF_SUBST([NO_D_TYPE_IN_DIRENT])
 865 #
 866 # Define NO_GECOS_IN_PWENT if you don't have pw_gecos in struct passwd
 867 # in the C library.
 868 AC_CHECK_MEMBER(struct passwd.pw_gecos,
 869 [NO_GECOS_IN_PWENT=],
 870 [NO_GECOS_IN_PWENT=YesPlease],
 871 [#include <pwd.h>])
 872 GIT_CONF_SUBST([NO_GECOS_IN_PWENT])
 873 #
 874 # Define NO_SOCKADDR_STORAGE if your platform does not have struct
 875 # sockaddr_storage.
 876 AC_CHECK_TYPE(struct sockaddr_storage,
 877 [NO_SOCKADDR_STORAGE=],
 878 [NO_SOCKADDR_STORAGE=YesPlease],[
 879 #include <sys/types.h>
 880 #include <sys/socket.h>
 881 ])
 882 GIT_CONF_SUBST([NO_SOCKADDR_STORAGE])
 883 #
 884 # Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
 885 AC_CHECK_TYPE([struct addrinfo],[
 886  GIT_CHECK_FUNC([getaddrinfo],
 887   [NO_IPV6=],
 888   [NO_IPV6=YesPlease])
 889 ],[NO_IPV6=YesPlease],[
 890 #include <sys/types.h>
 891 #include <sys/socket.h>
 892 #include <netdb.h>
 893 ])
 894 GIT_CONF_SUBST([NO_IPV6])
 895 #
 896 # Define NO_REGEX if your C library lacks regex support with REG_STARTEND
 897 # feature.
 898 AC_CACHE_CHECK([whether the platform regex supports REG_STARTEND],
 899  [ac_cv_c_regex_with_reg_startend], [
 900 AC_EGREP_CPP(yippeeyeswehaveit,
 901         AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
 902 #include <regex.h>
 903 ],
 904 [#ifdef REG_STARTEND
 905 yippeeyeswehaveit
 906 #endif
 907 ]),
 908         [ac_cv_c_regex_with_reg_startend=yes],
 909         [ac_cv_c_regex_with_reg_startend=no])
 910 ])
 911 if test $ac_cv_c_regex_with_reg_startend = yes; then
 912         NO_REGEX=
 913 else
 914         NO_REGEX=YesPlease
 915 fi
 916 GIT_CONF_SUBST([NO_REGEX])
 917 #
 918 # Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
 919 # when attempting to read from an fopen'ed directory.
 920 AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
 921  [ac_cv_fread_reads_directories],
 922 [
 923 AC_RUN_IFELSE(
 924         [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
 925                 [[
 926                 FILE *f = fopen(".", "r");
 927                 return f)]])],
 928         [ac_cv_fread_reads_directories=no],
 929         [ac_cv_fread_reads_directories=yes])
 930 ])
 931 if test $ac_cv_fread_reads_directories = yes; then
 932         FREAD_READS_DIRECTORIES=UnfortunatelyYes
 933 else
 934         FREAD_READS_DIRECTORIES=
 935 fi
 936 GIT_CONF_SUBST([FREAD_READS_DIRECTORIES])
 937 #
 938 # Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
 939 # or vsnprintf() return -1 instead of number of characters which would
 940 # have been written to the final string if enough space had been available.
 941 AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
 942  [ac_cv_snprintf_returns_bogus],
 943 [
 944 AC_RUN_IFELSE(
 945         [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
 946                 #include "stdarg.h"
 947
 948                 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
 949                 {
 950                   int ret;
 951                   va_list ap;
 952                   va_start(ap, format);
 953                   ret = vsnprintf(str, maxsize, format, ap);
 954                   va_end(ap);
 955                   return ret;
 956                 }],
 957                 [[char buf[6];
 958                   if (test_vsnprintf(buf, 3, "%s", "12345") != 5
 959                       || strcmp(buf, "12")) return 1;
 960                   if (snprintf(buf, 3, "%s", "12345") != 5
 961                       || strcmp(buf, "12")) return 1]])],
 962         [ac_cv_snprintf_returns_bogus=no],
 963         [ac_cv_snprintf_returns_bogus=yes])
 964 ])
 965 if test $ac_cv_snprintf_returns_bogus = yes; then
 966         SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
 967 else
 968         SNPRINTF_RETURNS_BOGUS=
 969 fi
 970 GIT_CONF_SUBST([SNPRINTF_RETURNS_BOGUS])
 971 #
 972 # Define NEEDS_MODE_TRANSLATION if your OS strays from the typical file type
 973 # bits in mode values.
 974 AC_CACHE_CHECK([whether the platform uses typical file type bits],
 975  [ac_cv_sane_mode_bits], [
 976 AC_EGREP_CPP(yippeeyeswehaveit,
 977         AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
 978 [#if S_IFMT == 0170000 && \
 979         S_IFREG == 0100000 && S_IFDIR == 0040000 && S_IFLNK == 0120000 && \
 980         S_IFBLK == 0060000 && S_IFCHR == 0020000 && \
 981         S_IFIFO == 0010000 && S_IFSOCK == 0140000
 982 yippeeyeswehaveit
 983 #endif
 984 ]),
 985         [ac_cv_sane_mode_bits=yes],
 986         [ac_cv_sane_mode_bits=no])
 987 ])
 988 if test $ac_cv_sane_mode_bits = yes; then
 989         NEEDS_MODE_TRANSLATION=
 990 else
 991         NEEDS_MODE_TRANSLATION=UnfortunatelyYes
 992 fi
 993 GIT_CONF_SUBST([NEEDS_MODE_TRANSLATION])
 994
 995
 996 ## Checks for library functions.
 997 ## (in default C library and libraries checked by AC_CHECK_LIB)
 998 AC_MSG_NOTICE([CHECKS for library functions])
 999 #
1000 # Define NO_LIBGEN_H if you don't have libgen.h.
1001 AC_CHECK_HEADER([libgen.h],
1002 [NO_LIBGEN_H=],
1003 [NO_LIBGEN_H=YesPlease])
1004 GIT_CONF_SUBST([NO_LIBGEN_H])
1005 #
1006 # Define HAVE_PATHS_H if you have paths.h.
1007 AC_CHECK_HEADER([paths.h],
1008 [HAVE_PATHS_H=YesPlease],
1009 [HAVE_PATHS_H=])
1010 GIT_CONF_SUBST([HAVE_PATHS_H])
1011 #
1012 # Define HAVE_LIBCHARSET_H if have libcharset.h
1013 AC_CHECK_HEADER([libcharset.h],
1014 [HAVE_LIBCHARSET_H=YesPlease],
1015 [HAVE_LIBCHARSET_H=])
1016 GIT_CONF_SUBST([HAVE_LIBCHARSET_H])
1017 #
1018 # Define HAVE_STRINGS_H if you have strings.h
1019 AC_CHECK_HEADER([strings.h],
1020 [HAVE_STRINGS_H=YesPlease],
1021 [HAVE_STRINGS_H=])
1022 GIT_CONF_SUBST([HAVE_STRINGS_H])
1023 # Define CHARSET_LIB if libiconv does not export the locale_charset symbol
1024 # and libcharset does
1025 CHARSET_LIB=
1026 AC_CHECK_LIB([iconv], [locale_charset],
1027        [CHARSET_LIB=-liconv],
1028        [AC_CHECK_LIB([charset], [locale_charset],
1029                      [CHARSET_LIB=-lcharset])])
1030 GIT_CONF_SUBST([CHARSET_LIB])
1031 #
1032 # Define HAVE_CLOCK_GETTIME=YesPlease if clock_gettime is available.
1033 GIT_CHECK_FUNC(clock_gettime,
1034         [HAVE_CLOCK_GETTIME=YesPlease],
1035         [HAVE_CLOCK_GETTIME=])
1036 GIT_CONF_SUBST([HAVE_CLOCK_GETTIME])
1037
1038 AC_DEFUN([CLOCK_MONOTONIC_SRC], [
1039 AC_LANG_PROGRAM([[
1040 #include <time.h>
1041 clockid_t id = CLOCK_MONOTONIC;
1042 ]])])
1043
1044 #
1045 # Define HAVE_CLOCK_MONOTONIC=YesPlease if CLOCK_MONOTONIC is available.
1046 AC_MSG_CHECKING([for CLOCK_MONOTONIC])
1047 AC_COMPILE_IFELSE([CLOCK_MONOTONIC_SRC],
1048         [AC_MSG_RESULT([yes])
1049         HAVE_CLOCK_MONOTONIC=YesPlease],
1050         [AC_MSG_RESULT([no])
1051         HAVE_CLOCK_MONOTONIC=])
1052 GIT_CONF_SUBST([HAVE_CLOCK_MONOTONIC])
1053 #
1054 # Define NO_SETITIMER if you don't have setitimer.
1055 GIT_CHECK_FUNC(setitimer,
1056 [NO_SETITIMER=],
1057 [NO_SETITIMER=YesPlease])
1058 GIT_CONF_SUBST([NO_SETITIMER])
1059 #
1060 # Define NO_STRCASESTR if you don't have strcasestr.
1061 GIT_CHECK_FUNC(strcasestr,
1062 [NO_STRCASESTR=],
1063 [NO_STRCASESTR=YesPlease])
1064 GIT_CONF_SUBST([NO_STRCASESTR])
1065 #
1066 # Define NO_MEMMEM if you don't have memmem.
1067 GIT_CHECK_FUNC(memmem,
1068 [NO_MEMMEM=],
1069 [NO_MEMMEM=YesPlease])
1070 GIT_CONF_SUBST([NO_MEMMEM])
1071 #
1072 # Define NO_STRLCPY if you don't have strlcpy.
1073 GIT_CHECK_FUNC(strlcpy,
1074 [NO_STRLCPY=],
1075 [NO_STRLCPY=YesPlease])
1076 GIT_CONF_SUBST([NO_STRLCPY])
1077 #
1078 # Define NO_UINTMAX_T if your platform does not have uintmax_t
1079 AC_CHECK_TYPE(uintmax_t,
1080 [NO_UINTMAX_T=],
1081 [NO_UINTMAX_T=YesPlease],[
1082 #include <inttypes.h>
1083 ])
1084 GIT_CONF_SUBST([NO_UINTMAX_T])
1085 #
1086 # Define NO_STRTOUMAX if you don't have strtoumax in the C library.
1087 GIT_CHECK_FUNC(strtoumax,
1088 [NO_STRTOUMAX=],
1089 [NO_STRTOUMAX=YesPlease])
1090 GIT_CONF_SUBST([NO_STRTOUMAX])
1091 #
1092 # Define NO_SETENV if you don't have setenv in the C library.
1093 GIT_CHECK_FUNC(setenv,
1094 [NO_SETENV=],
1095 [NO_SETENV=YesPlease])
1096 GIT_CONF_SUBST([NO_SETENV])
1097 #
1098 # Define NO_UNSETENV if you don't have unsetenv in the C library.
1099 GIT_CHECK_FUNC(unsetenv,
1100 [NO_UNSETENV=],
1101 [NO_UNSETENV=YesPlease])
1102 GIT_CONF_SUBST([NO_UNSETENV])
1103 #
1104 # Define NO_MKDTEMP if you don't have mkdtemp in the C library.
1105 GIT_CHECK_FUNC(mkdtemp,
1106 [NO_MKDTEMP=],
1107 [NO_MKDTEMP=YesPlease])
1108 GIT_CONF_SUBST([NO_MKDTEMP])
1109 #
1110 # Define NO_INITGROUPS if you don't have initgroups in the C library.
1111 GIT_CHECK_FUNC(initgroups,
1112 [NO_INITGROUPS=],
1113 [NO_INITGROUPS=YesPlease])
1114 GIT_CONF_SUBST([NO_INITGROUPS])
1115 #
1116 # Define HAVE_GETDELIM if you have getdelim in the C library.
1117 GIT_CHECK_FUNC(getdelim,
1118 [HAVE_GETDELIM=YesPlease],
1119 [HAVE_GETDELIM=])
1120 GIT_CONF_SUBST([HAVE_GETDELIM])
1121 #
1122 #
1123 # Define NO_MMAP if you want to avoid mmap.
1124 #
1125 # Define NO_ICONV if your libc does not properly support iconv.
1126
1127 AC_DEFUN([BSD_SYSCTL_SRC], [
1128 AC_LANG_PROGRAM([[
1129 #include <stddef.h>
1130 #include <sys/types.h>
1131 #include <sys/sysctl.h>
1132 ]],[[
1133 int val, mib[2];
1134 size_t len;
1135 mib[0] = CTL_HW;
1136 mib[1] = 1;
1137 len = sizeof(val);
1138 return sysctl(mib, 2, &val, &len, NULL, 0) ? 1 : 0;
1139 ]])])
1140
1141 #
1142 # Define HAVE_BSD_SYSCTL=YesPlease if a BSD-compatible sysctl function is available.
1143 AC_MSG_CHECKING([for BSD sysctl])
1144 AC_COMPILE_IFELSE([BSD_SYSCTL_SRC],
1145         [AC_MSG_RESULT([yes])
1146         HAVE_BSD_SYSCTL=YesPlease],
1147         [AC_MSG_RESULT([no])
1148         HAVE_BSD_SYSCTL=])
1149 GIT_CONF_SUBST([HAVE_BSD_SYSCTL])
1150
1151 ## Other checks.
1152 # Define USE_PIC if you need the main git objects to be built with -fPIC
1153 # in order to build and link perl/Git.so.  x86-64 seems to need this.
1154 #
1155 # Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
1156 # Enable it on Windows.  By default, symrefs are still used.
1157 #
1158 # Define NO_PTHREADS if we do not have pthreads.
1159 #
1160 # Define PTHREAD_LIBS to the linker flag used for Pthread support.
1161 AC_DEFUN([PTHREADTEST_SRC], [
1162 AC_LANG_PROGRAM([[
1163 #include <pthread.h>
1164 static void *noop(void *ignore) { return ignore; }
1165 ]], [[
1166         pthread_mutex_t test_mutex;
1167         pthread_key_t test_key;
1168         pthread_t th;
1169         int retcode = 0;
1170         void *ret = (void *)0;
1171         retcode |= pthread_key_create(&test_key, (void *)0);
1172         retcode |= pthread_mutex_init(&test_mutex,(void *)0);
1173         retcode |= pthread_mutex_lock(&test_mutex);
1174         retcode |= pthread_mutex_unlock(&test_mutex);
1175         retcode |= pthread_create(&th, ret, noop, ret);
1176         retcode |= pthread_join(th, &ret);
1177         return retcode;
1178 ]])])
1179
1180 dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(
1181 dnl   [[#include <pthread.h>]],
1182 dnl   [[pthread_mutex_t test_mutex;]]
1183 dnl )])
1184
1185 NO_PTHREADS=UnfortunatelyYes
1186 PTHREAD_LIBS=
1187
1188 if test -n "$USER_NOPTHREAD"; then
1189    AC_MSG_NOTICE([Skipping POSIX Threads at user request.])
1190 # handle these separately since PTHREAD_CFLAGS could be '-lpthreads
1191 # -D_REENTRANT' or some such.
1192 elif test -z "$PTHREAD_CFLAGS"; then
1193   threads_found=no
1194   # Attempt to compile and link some code using pthreads to determine
1195   # required linker flags. The order is somewhat important here: We
1196   # first try it without any extra flags, to catch systems where
1197   # pthreads are part of the C library, then go on testing various other
1198   # flags. We do so to avoid false positives. For example, on Mac OS X
1199   # pthreads are part of the C library; moreover, the compiler allows us
1200   # to add "-mt" to the CFLAGS (although it will do nothing except
1201   # trigger a warning about an unused flag). Hence if we checked for
1202   # "-mt" before "" we would end up picking it. But unfortunately this
1203   # would then trigger compiler warnings on every single file we compile.
1204   for opt in "" -mt -pthread -lpthread; do
1205      old_CFLAGS="$CFLAGS"
1206      old_LIBS="$LIBS"
1207      case "$opt" in
1208         -l*)  LIBS="$opt $LIBS" ;;
1209         *)    CFLAGS="$opt $CFLAGS" ;;
1210      esac
1211
1212      AC_MSG_CHECKING([for POSIX Threads with '$opt'])
1213      AC_LINK_IFELSE([PTHREADTEST_SRC],
1214         [AC_MSG_RESULT([yes])
1215                 NO_PTHREADS=
1216                 PTHREAD_LIBS="$opt"
1217                 PTHREAD_CFLAGS="$opt"
1218                 threads_found=yes
1219                 break
1220         ],
1221         [AC_MSG_RESULT([no])])
1222       CFLAGS="$old_CFLAGS"
1223       LIBS="$old_LIBS"
1224   done
1225   if test $threads_found != yes; then
1226     AC_CHECK_LIB([pthread], [pthread_create],
1227         [PTHREAD_LIBS="-lpthread"],
1228         [NO_PTHREADS=UnfortunatelyYes])
1229   fi
1230 else
1231   old_CFLAGS="$CFLAGS"
1232   CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
1233   AC_MSG_CHECKING([for POSIX Threads with '$PTHREAD_CFLAGS'])
1234   AC_LINK_IFELSE([PTHREADTEST_SRC],
1235         [AC_MSG_RESULT([yes])
1236                 NO_PTHREADS=
1237                 PTHREAD_LIBS="$PTHREAD_CFLAGS"
1238         ],
1239         [AC_MSG_RESULT([no])])
1240
1241   CFLAGS="$old_CFLAGS"
1242 fi
1243
1244 CFLAGS="$old_CFLAGS"
1245
1246 GIT_CONF_SUBST([PTHREAD_CFLAGS])
1247 GIT_CONF_SUBST([PTHREAD_LIBS])
1248 GIT_CONF_SUBST([NO_PTHREADS])
1249
1250 ## Output files
1251 AC_CONFIG_FILES(["${config_file}":"${config_in}"])
1252 AC_OUTPUT