Andrew's git / gitweb.git / configure.ac
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configure.acon commit Merge branch 'jn/fast-import-doc' (b5d681b)
   1#                                               -*- Autoconf -*-
   2# Process this file with autoconf to produce a configure script.
   3
   4## Definitions of private macros.
   5
   6# GIT_CONF_APPEND_LINE(LINE)
   7# --------------------------
   8# Append LINE to file ${config_append}
   9AC_DEFUN([GIT_CONF_APPEND_LINE],
  10         [echo "$1" >> "${config_append}"])
  11
  12# GIT_ARG_SET_PATH(PROGRAM)
  13# -------------------------
  14# Provide --with-PROGRAM=PATH option to set PATH to PROGRAM
  15# Optional second argument allows setting NO_PROGRAM=YesPlease if
  16# --without-PROGRAM version used.
  17AC_DEFUN([GIT_ARG_SET_PATH],
  18    [AC_ARG_WITH([$1],
  19        [AS_HELP_STRING([--with-$1=PATH],
  20                        [provide PATH to $1])],
  21        [GIT_CONF_APPEND_PATH([$1], [$2])],
  22        [])])
  23
  24# GIT_CONF_APPEND_PATH(PROGRAM)
  25# -----------------------------
  26# Parse --with-PROGRAM=PATH option to set PROGRAM_PATH=PATH
  27# Used by GIT_ARG_SET_PATH(PROGRAM)
  28# Optional second argument allows setting NO_PROGRAM=YesPlease if
  29# --without-PROGRAM is used.
  30AC_DEFUN([GIT_CONF_APPEND_PATH],
  31    [m4_pushdef([GIT_UC_PROGRAM], m4_toupper([$1]))dnl
  32    PROGRAM=GIT_UC_PROGRAM
  33    if test "$withval" = "no"; then
  34        if test -n "$2"; then
  35                GIT_UC_PROGRAM[]_PATH=$withval
  36                AC_MSG_NOTICE([Disabling use of ${PROGRAM}])
  37                GIT_CONF_APPEND_LINE(NO_${PROGRAM}=YesPlease)
  38                GIT_CONF_APPEND_LINE(${PROGRAM}_PATH=)
  39        else
  40                AC_MSG_ERROR([You cannot use git without $1])
  41        fi
  42    else
  43        if test "$withval" = "yes"; then
  44                AC_MSG_WARN([You should provide path for --with-$1=PATH])
  45        else
  46                GIT_UC_PROGRAM[]_PATH=$withval
  47                AC_MSG_NOTICE([Setting GIT_UC_PROGRAM[]_PATH to $withval])
  48                GIT_CONF_APPEND_LINE(${PROGRAM}_PATH=$withval)
  49        fi
  50    fi
  51    m4_popdef([GIT_UC_PROGRAM])])
  52
  53# GIT_PARSE_WITH(PACKAGE)
  54# -----------------------
  55# For use in AC_ARG_WITH action-if-found, for packages default ON.
  56# * Set NO_PACKAGE=YesPlease for --without-PACKAGE
  57# * Set PACKAGEDIR=PATH for --with-PACKAGE=PATH
  58# * Unset NO_PACKAGE for --with-PACKAGE without ARG
  59AC_DEFUN([GIT_PARSE_WITH],
  60    [m4_pushdef([GIT_UC_PACKAGE], m4_toupper([$1]))dnl
  61    PACKAGE=GIT_UC_PACKAGE
  62    if test "$withval" = "no"; then
  63        NO_[]GIT_UC_PACKAGE=YesPlease
  64    elif test "$withval" = "yes"; then
  65        NO_[]GIT_UC_PACKAGE=
  66    else
  67        NO_[]GIT_UC_PACKAGE=
  68        GIT_UC_PACKAGE[]DIR=$withval
  69        AC_MSG_NOTICE([Setting GIT_UC_PACKAGE[]DIR to $withval])
  70        GIT_CONF_APPEND_LINE(${PACKAGE}DIR=$withval)
  71    fi
  72    m4_popdef([GIT_UC_PACKAGE])])
  73
  74# GIT_PARSE_WITH_SET_MAKE_VAR(WITHNAME, VAR, HELP_TEXT)
  75# -----------------------------------------------------
  76# Set VAR to the value specied by --with-WITHNAME.
  77# No verification of arguments is performed, but warnings are issued
  78# if either 'yes' or 'no' is specified.
  79# HELP_TEXT is presented when --help is called.
  80# This is a direct way to allow setting variables in the Makefile.
  81AC_DEFUN([GIT_PARSE_WITH_SET_MAKE_VAR],
  82[AC_ARG_WITH([$1],
  83 [AS_HELP_STRING([--with-$1=VALUE], $3)],
  84 if test -n "$withval"; then
  85  if test "$withval" = "yes" -o "$withval" = "no"; then
  86    AC_MSG_WARN([You likely do not want either 'yes' or 'no' as]
  87                     [a value for $1 ($2).  Maybe you do...?])
  88  fi
  89  AC_MSG_NOTICE([Setting $2 to $withval])
  90  GIT_CONF_APPEND_LINE($2=$withval)
  91 fi)])# GIT_PARSE_WITH_SET_MAKE_VAR
  92
  93#
  94# GIT_CHECK_FUNC(FUNCTION, IFTRUE, IFFALSE)
  95# -----------------------------------------
  96# Similar to AC_CHECK_FUNC, but on systems that do not generate
  97# warnings for missing prototypes (e.g. FreeBSD when compiling without
  98# -Wall), it does not work.  By looking for function definition in
  99# libraries, this problem can be worked around.
 100AC_DEFUN([GIT_CHECK_FUNC],[AC_CHECK_FUNC([$1],[
 101  AC_SEARCH_LIBS([$1],,
 102  [$2],[$3])
 103],[$3])])
 104
 105#
 106# GIT_STASH_FLAGS(BASEPATH_VAR)
 107# -----------------------------
 108# Allow for easy stashing of LDFLAGS and CPPFLAGS before running
 109# tests that may want to take user settings into account.
 110AC_DEFUN([GIT_STASH_FLAGS],[
 111if test -n "$1"; then
 112   old_CPPFLAGS="$CPPFLAGS"
 113   old_LDFLAGS="$LDFLAGS"
 114   CPPFLAGS="-I$1/include $CPPFLAGS"
 115   LDFLAGS="-L$1/$lib $LDFLAGS"
 116fi
 117])
 118
 119dnl
 120dnl GIT_UNSTASH_FLAGS(BASEPATH_VAR)
 121dnl -----------------------------
 122dnl Restore the stashed *FLAGS values.
 123AC_DEFUN([GIT_UNSTASH_FLAGS],[
 124if test -n "$1"; then
 125   CPPFLAGS="$old_CPPFLAGS"
 126   LDFLAGS="$old_LDFLAGS"
 127fi
 128])
 129
 130## Configure body starts here.
 131
 132AC_PREREQ(2.59)
 133AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org])
 134
 135AC_CONFIG_SRCDIR([git.c])
 136
 137config_file=config.mak.autogen
 138config_append=config.mak.append
 139config_in=config.mak.in
 140
 141echo "# ${config_append}.  Generated by configure." > "${config_append}"
 142
 143# Directories holding "saner" versions of common or POSIX binaries.
 144AC_ARG_WITH([sane-tool-path],
 145  [AS_HELP_STRING(
 146    [--with-sane-tool-path=DIR-1[[:DIR-2...:DIR-n]]],
 147    [Directories to prepend to PATH in build system and generated scripts])],
 148  [if test "$withval" = "no"; then
 149    withval=''
 150  else
 151    AC_MSG_NOTICE([Setting SANE_TOOL_PATH to '$withval'])
 152  fi
 153  GIT_CONF_APPEND_LINE([SANE_TOOL_PATH=$withval])],
 154  [# If the "--with-sane-tool-path" option was not given, don't touch
 155   # SANE_TOOL_PATH here, but let defaults in Makefile take care of it.
 156   # This should minimize spurious differences in the behaviour of the
 157   # Git build system when configure is used w.r.t. when it is not.
 158   :])
 159
 160## Site configuration related to programs (before tests)
 161## --with-PACKAGE[=ARG] and --without-PACKAGE
 162#
 163# Set lib to alternative name of lib directory (e.g. lib64)
 164AC_ARG_WITH([lib],
 165 [AS_HELP_STRING([--with-lib=ARG],
 166                 [ARG specifies alternative name for lib directory])],
 167 [if test "$withval" = "no" || test "$withval" = "yes"; then
 168        AC_MSG_WARN([You should provide name for --with-lib=ARG])
 169  else
 170        lib=$withval
 171        AC_MSG_NOTICE([Setting lib to '$lib'])
 172        GIT_CONF_APPEND_LINE(lib=$withval)
 173  fi])
 174
 175if test -z "$lib"; then
 176   AC_MSG_NOTICE([Setting lib to 'lib' (the default)])
 177   lib=lib
 178fi
 179
 180AC_ARG_ENABLE([pthreads],
 181 [AS_HELP_STRING([--enable-pthreads=FLAGS],
 182  [FLAGS is the value to pass to the compiler to enable POSIX Threads.]
 183  [The default if FLAGS is not specified is to try first -pthread]
 184  [and then -lpthread.]
 185  [--without-pthreads will disable threading.])],
 186[
 187if test "x$enableval" = "xyes"; then
 188   AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads])
 189elif test "x$enableval" != "xno"; then
 190   PTHREAD_CFLAGS=$enableval
 191   AC_MSG_NOTICE([Setting '$PTHREAD_CFLAGS' as the FLAGS to enable POSIX Threads])
 192else
 193   AC_MSG_NOTICE([POSIX Threads will be disabled.])
 194   NO_PTHREADS=YesPlease
 195   USER_NOPTHREAD=1
 196fi],
 197[
 198   AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads.])
 199])
 200
 201# Define option to enable JavaScript minification
 202AC_ARG_ENABLE([jsmin],
 203[AS_HELP_STRING([--enable-jsmin=PATH],
 204  [PATH is the name of a JavaScript minifier or the absolute path to one.])],
 205[
 206  JSMIN=$enableval;
 207  AC_MSG_NOTICE([Setting JSMIN to '$JSMIN' to enable JavaScript minifying])
 208  GIT_CONF_APPEND_LINE(JSMIN=$enableval);
 209])
 210
 211# Define option to enable CSS minification
 212AC_ARG_ENABLE([cssmin],
 213[AS_HELP_STRING([--enable-cssmin=PATH],
 214  [PATH is the name of a CSS minifier or the absolute path to one.])],
 215[
 216  CSSMIN=$enableval;
 217  AC_MSG_NOTICE([Setting CSSMIN to '$CSSMIN' to enable CSS minifying])
 218  GIT_CONF_APPEND_LINE(CSSMIN=$enableval);
 219])
 220
 221## Site configuration (override autodetection)
 222## --with-PACKAGE[=ARG] and --without-PACKAGE
 223AC_MSG_NOTICE([CHECKS for site configuration])
 224#
 225# Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
 226# tests.  These tests take up a significant amount of the total test time
 227# but are not needed unless you plan to talk to SVN repos.
 228#
 229# Define PPC_SHA1 environment variable when running make to make use of
 230# a bundled SHA1 routine optimized for PowerPC.
 231#
 232# Define NO_OPENSSL environment variable if you do not have OpenSSL.
 233# This also implies BLK_SHA1.
 234#
 235# Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
 236# /foo/bar/include and /foo/bar/lib directories.
 237AC_ARG_WITH(openssl,
 238AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
 239AS_HELP_STRING([],              [ARG can be prefix for openssl library and headers]),
 240GIT_PARSE_WITH([openssl]))
 241
 242# Define USE_LIBPCRE if you have and want to use libpcre. git-grep will be
 243# able to use Perl-compatible regular expressions.
 244#
 245# Define LIBPCREDIR=/foo/bar if your libpcre header and library files are in
 246# /foo/bar/include and /foo/bar/lib directories.
 247#
 248AC_ARG_WITH(libpcre,
 249AS_HELP_STRING([--with-libpcre],[support Perl-compatible regexes (default is NO)])
 250AS_HELP_STRING([],           [ARG can be also prefix for libpcre library and headers]),
 251    if test "$withval" = "no"; then
 252        USE_LIBPCRE=
 253    elif test "$withval" = "yes"; then
 254        USE_LIBPCRE=YesPlease
 255    else
 256        USE_LIBPCRE=YesPlease
 257        LIBPCREDIR=$withval
 258        AC_MSG_NOTICE([Setting LIBPCREDIR to $withval])
 259        GIT_CONF_APPEND_LINE(LIBPCREDIR=$withval)
 260    fi)
 261#
 262# Define NO_CURL if you do not have curl installed.  git-http-pull and
 263# git-http-push are not built, and you cannot use http:// and https://
 264# transports.
 265#
 266# Define CURLDIR=/foo/bar if your curl header and library files are in
 267# /foo/bar/include and /foo/bar/lib directories.
 268AC_ARG_WITH(curl,
 269AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
 270AS_HELP_STRING([],           [ARG can be also prefix for curl library and headers]),
 271GIT_PARSE_WITH(curl))
 272#
 273# Define NO_EXPAT if you do not have expat installed.  git-http-push is
 274# not built, and you cannot push using http:// and https:// transports.
 275#
 276# Define EXPATDIR=/foo/bar if your expat header and library files are in
 277# /foo/bar/include and /foo/bar/lib directories.
 278AC_ARG_WITH(expat,
 279AS_HELP_STRING([--with-expat],
 280[support git-push using http:// and https:// transports via WebDAV (default is YES)])
 281AS_HELP_STRING([],            [ARG can be also prefix for expat library and headers]),
 282GIT_PARSE_WITH(expat))
 283#
 284# Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
 285# installed in /sw, but don't want GIT to link against any libraries
 286# installed there.  If defined you may specify your own (or Fink's)
 287# include directories and library directories by defining CFLAGS
 288# and LDFLAGS appropriately.
 289#
 290# Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
 291# have DarwinPorts installed in /opt/local, but don't want GIT to
 292# link against any libraries installed there.  If defined you may
 293# specify your own (or DarwinPort's) include directories and
 294# library directories by defining CFLAGS and LDFLAGS appropriately.
 295#
 296# Define NO_MMAP if you want to avoid mmap.
 297#
 298# Define NO_ICONV if your libc does not properly support iconv.
 299AC_ARG_WITH(iconv,
 300AS_HELP_STRING([--without-iconv],
 301[if your architecture doesn't properly support iconv])
 302AS_HELP_STRING([--with-iconv=PATH],
 303[PATH is prefix for libiconv library and headers])
 304AS_HELP_STRING([],
 305[used only if you need linking with libiconv]),
 306GIT_PARSE_WITH(iconv))
 307
 308## --enable-FEATURE[=ARG] and --disable-FEATURE
 309#
 310# Define USE_NSEC below if you want git to care about sub-second file mtimes
 311# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
 312# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
 313# randomly break unless your underlying filesystem supports those sub-second
 314# times (my ext3 doesn't).
 315#
 316# Define USE_STDEV below if you want git to care about the underlying device
 317# change being considered an inode change from the update-index perspective.
 318
 319#
 320# Allow user to set ETC_GITCONFIG variable
 321GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG,
 322                        Use VALUE instead of /etc/gitconfig as the
 323                        global git configuration file.
 324                        If VALUE is not fully qualified it will be interpreted
 325                        as a path relative to the computed prefix at runtime.)
 326
 327#
 328# Allow user to set ETC_GITATTRIBUTES variable
 329GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES,
 330                        Use VALUE instead of /etc/gitattributes as the
 331                        global git attributes file.
 332                        If VALUE is not fully qualified it will be interpreted
 333                        as a path relative to the computed prefix at runtime.)
 334
 335#
 336# Allow user to set the default pager
 337GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER,
 338                        Use VALUE as the fall-back pager instead of 'less'.
 339                        This is used by things like 'git log' when the user
 340                        does not specify a pager to use through alternate
 341                        methods. eg: /usr/bin/pager)
 342#
 343# Allow user to set the default editor
 344GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR,
 345                        Use VALUE as the fall-back editor instead of 'vi'.
 346                        This is used by things like 'git commit' when the user
 347                        does not specify a preferred editor through other
 348                        methods. eg: /usr/bin/editor)
 349
 350#
 351# Define SHELL_PATH to provide path to shell.
 352GIT_ARG_SET_PATH(shell)
 353#
 354# Define PERL_PATH to provide path to Perl.
 355GIT_ARG_SET_PATH(perl)
 356#
 357# Define PYTHON_PATH to provide path to Python.
 358GIT_ARG_SET_PATH(python, allow-without)
 359#
 360# Define ZLIB_PATH to provide path to zlib.
 361GIT_ARG_SET_PATH(zlib)
 362#
 363# Declare the with-tcltk/without-tcltk options.
 364AC_ARG_WITH(tcltk,
 365AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
 366AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
 367AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
 368AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),
 369GIT_PARSE_WITH(tcltk))
 370#
 371
 372
 373## Checks for programs.
 374AC_MSG_NOTICE([CHECKS for programs])
 375#
 376AC_PROG_CC([cc gcc])
 377AC_C_INLINE
 378case $ac_cv_c_inline in
 379  inline | yes | no)    ;;
 380  *)                    AC_SUBST([INLINE], [$ac_cv_c_inline]) ;;
 381esac
 382
 383# which switch to pass runtime path to dynamic libraries to the linker
 384AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [
 385   SAVE_LDFLAGS="${LDFLAGS}"
 386   LDFLAGS="${SAVE_LDFLAGS} -R /"
 387   AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no])
 388   LDFLAGS="${SAVE_LDFLAGS}"
 389])
 390if test "$git_cv_ld_dashr" = "yes"; then
 391   AC_SUBST(CC_LD_DYNPATH, [-R])
 392else
 393   AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [
 394      SAVE_LDFLAGS="${LDFLAGS}"
 395      LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/"
 396      AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no])
 397      LDFLAGS="${SAVE_LDFLAGS}"
 398   ])
 399   if test "$git_cv_ld_wl_rpath" = "yes"; then
 400      AC_SUBST(CC_LD_DYNPATH, [-Wl,-rpath,])
 401   else
 402      AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [
 403         SAVE_LDFLAGS="${LDFLAGS}"
 404         LDFLAGS="${SAVE_LDFLAGS} -rpath /"
 405         AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no])
 406         LDFLAGS="${SAVE_LDFLAGS}"
 407      ])
 408      if test "$git_cv_ld_rpath" = "yes"; then
 409         AC_SUBST(CC_LD_DYNPATH, [-rpath])
 410      else
 411         AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
 412      fi
 413   fi
 414fi
 415#AC_PROG_INSTALL                # needs install-sh or install.sh in sources
 416AC_CHECK_TOOLS(AR, [gar ar], :)
 417AC_CHECK_PROGS(TAR, [gtar tar])
 418AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff])
 419# TCLTK_PATH will be set to some value if we want Tcl/Tk
 420# or will be empty otherwise.
 421if test -z "$NO_TCLTK"; then
 422  if test "$with_tcltk" = ""; then
 423  # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
 424    TCLTK_PATH=wish
 425    AC_SUBST(TCLTK_PATH)
 426  elif test "$with_tcltk" = "yes"; then
 427  # Tcl/Tk check requested.
 428    AC_CHECK_PROGS(TCLTK_PATH, [wish], )
 429  else
 430    AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
 431    TCLTK_PATH="$with_tcltk"
 432    AC_SUBST(TCLTK_PATH)
 433  fi
 434fi
 435AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
 436if test -n "$ASCIIDOC"; then
 437        AC_MSG_CHECKING([for asciidoc version])
 438        asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
 439        case "${asciidoc_version}" in
 440        asciidoc' '7*)
 441                ASCIIDOC7=YesPlease
 442                AC_MSG_RESULT([${asciidoc_version} > 7])
 443                ;;
 444        asciidoc' '8*)
 445                ASCIIDOC7=
 446                AC_MSG_RESULT([${asciidoc_version}])
 447                ;;
 448        *)
 449                ASCIIDOC7=
 450                AC_MSG_RESULT([${asciidoc_version} (unknown)])
 451                ;;
 452        esac
 453fi
 454AC_SUBST(ASCIIDOC7)
 455
 456
 457## Checks for libraries.
 458AC_MSG_NOTICE([CHECKS for libraries])
 459#
 460# Define NO_OPENSSL environment variable if you do not have OpenSSL.
 461# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
 462
 463GIT_STASH_FLAGS($OPENSSLDIR)
 464
 465AC_CHECK_LIB([crypto], [SHA1_Init],
 466[NEEDS_SSL_WITH_CRYPTO=],
 467[AC_CHECK_LIB([ssl], [SHA1_Init],
 468 [NEEDS_SSL_WITH_CRYPTO=YesPlease],
 469 [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])])
 470
 471GIT_UNSTASH_FLAGS($OPENSSLDIR)
 472
 473AC_SUBST(NEEDS_SSL_WITH_CRYPTO)
 474AC_SUBST(NO_OPENSSL)
 475
 476#
 477# Define USE_LIBPCRE if you have and want to use libpcre. git-grep will be
 478# able to use Perl-compatible regular expressions.
 479#
 480
 481if test -n "$USE_LIBPCRE"; then
 482
 483GIT_STASH_FLAGS($LIBPCREDIR)
 484
 485AC_CHECK_LIB([pcre], [pcre_version],
 486[USE_LIBPCRE=YesPlease],
 487[USE_LIBPCRE=])
 488
 489GIT_UNSTASH_FLAGS($LIBPCREDIR)
 490
 491AC_SUBST(USE_LIBPCRE)
 492
 493fi
 494
 495#
 496# Define NO_CURL if you do not have libcurl installed.  git-http-pull and
 497# git-http-push are not built, and you cannot use http:// and https://
 498# transports.
 499
 500GIT_STASH_FLAGS($CURLDIR)
 501
 502AC_CHECK_LIB([curl], [curl_global_init],
 503[NO_CURL=],
 504[NO_CURL=YesPlease])
 505
 506GIT_UNSTASH_FLAGS($CURLDIR)
 507
 508AC_SUBST(NO_CURL)
 509
 510#
 511# Define NO_EXPAT if you do not have expat installed.  git-http-push is
 512# not built, and you cannot push using http:// and https:// transports.
 513
 514GIT_STASH_FLAGS($EXPATDIR)
 515
 516AC_CHECK_LIB([expat], [XML_ParserCreate],
 517[NO_EXPAT=],
 518[NO_EXPAT=YesPlease])
 519
 520GIT_UNSTASH_FLAGS($EXPATDIR)
 521
 522AC_SUBST(NO_EXPAT)
 523
 524#
 525# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
 526# some Solaris installations).
 527# Define NO_ICONV if neither libc nor libiconv support iconv.
 528
 529if test -z "$NO_ICONV"; then
 530
 531GIT_STASH_FLAGS($ICONVDIR)
 532
 533AC_DEFUN([ICONVTEST_SRC],
 534[AC_LANG_PROGRAM([#include <iconv.h>],
 535 [iconv_open("", "");])])
 536
 537if test -n "$ICONVDIR"; then
 538   lib_order="-liconv -lc"
 539else
 540   lib_order="-lc -liconv"
 541fi
 542
 543NO_ICONV=YesPlease
 544
 545for l in $lib_order; do
 546    if test "$l" = "-liconv"; then
 547       NEEDS_LIBICONV=YesPlease
 548    else
 549       NEEDS_LIBICONV=
 550    fi
 551
 552    old_LIBS="$LIBS"
 553    LIBS="$LIBS $l"
 554    AC_MSG_CHECKING([for iconv in $l])
 555    AC_LINK_IFELSE([ICONVTEST_SRC],
 556        [AC_MSG_RESULT([yes])
 557        NO_ICONV=
 558        break],
 559        [AC_MSG_RESULT([no])])
 560    LIBS="$old_LIBS"
 561done
 562
 563#in case of break
 564LIBS="$old_LIBS"
 565
 566GIT_UNSTASH_FLAGS($ICONVDIR)
 567
 568AC_SUBST(NEEDS_LIBICONV)
 569AC_SUBST(NO_ICONV)
 570
 571if test -n "$NO_ICONV"; then
 572    NEEDS_LIBICONV=
 573fi
 574
 575fi
 576
 577#
 578# Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
 579
 580GIT_STASH_FLAGS($ZLIB_PATH)
 581
 582AC_DEFUN([ZLIBTEST_SRC], [
 583AC_LANG_PROGRAM([#include <zlib.h>],
 584 [deflateBound(0, 0);])])
 585AC_MSG_CHECKING([for deflateBound in -lz])
 586old_LIBS="$LIBS"
 587LIBS="$LIBS -lz"
 588AC_LINK_IFELSE([ZLIBTEST_SRC],
 589        [AC_MSG_RESULT([yes])],
 590        [AC_MSG_RESULT([no])
 591        NO_DEFLATE_BOUND=yes])
 592LIBS="$old_LIBS"
 593
 594GIT_UNSTASH_FLAGS($ZLIB_PATH)
 595
 596AC_SUBST(NO_DEFLATE_BOUND)
 597
 598#
 599# Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
 600# Patrick Mauritz).
 601AC_CHECK_LIB([c], [socket],
 602[NEEDS_SOCKET=],
 603[NEEDS_SOCKET=YesPlease])
 604AC_SUBST(NEEDS_SOCKET)
 605test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
 606
 607#
 608# The next few tests will define NEEDS_RESOLV if linking with
 609# libresolv provides some of the functions we would normally get
 610# from libc.
 611NEEDS_RESOLV=
 612AC_SUBST(NEEDS_RESOLV)
 613#
 614# Define NO_INET_NTOP if linking with -lresolv is not enough.
 615# Solaris 2.7 in particular hos inet_ntop in -lresolv.
 616NO_INET_NTOP=
 617AC_SUBST(NO_INET_NTOP)
 618AC_CHECK_FUNC([inet_ntop],
 619        [],
 620    [AC_CHECK_LIB([resolv], [inet_ntop],
 621            [NEEDS_RESOLV=YesPlease],
 622        [NO_INET_NTOP=YesPlease])
 623])
 624#
 625# Define NO_INET_PTON if linking with -lresolv is not enough.
 626# Solaris 2.7 in particular hos inet_pton in -lresolv.
 627NO_INET_PTON=
 628AC_SUBST(NO_INET_PTON)
 629AC_CHECK_FUNC([inet_pton],
 630        [],
 631    [AC_CHECK_LIB([resolv], [inet_pton],
 632            [NEEDS_RESOLV=YesPlease],
 633        [NO_INET_PTON=YesPlease])
 634])
 635#
 636# Define NO_HSTRERROR if linking with -lresolv is not enough.
 637# Solaris 2.6 in particular has no hstrerror, even in -lresolv.
 638NO_HSTRERROR=
 639AC_CHECK_FUNC([hstrerror],
 640        [],
 641    [AC_CHECK_LIB([resolv], [hstrerror],
 642            [NEEDS_RESOLV=YesPlease],
 643        [NO_HSTRERROR=YesPlease])
 644])
 645AC_SUBST(NO_HSTRERROR)
 646#
 647# If any of the above tests determined that -lresolv is needed at
 648# build-time, also set it here for remaining configure-time checks.
 649test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv"
 650
 651AC_CHECK_LIB([c], [basename],
 652[NEEDS_LIBGEN=],
 653[NEEDS_LIBGEN=YesPlease])
 654AC_SUBST(NEEDS_LIBGEN)
 655test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen"
 656
 657AC_CHECK_LIB([c], [gettext],
 658[LIBC_CONTAINS_LIBINTL=YesPlease],
 659[LIBC_CONTAINS_LIBINTL=])
 660AC_SUBST(LIBC_CONTAINS_LIBINTL)
 661
 662#
 663# Define NO_GETTEXT if you don't want Git output to be translated.
 664# A translated Git requires GNU libintl or another gettext implementation
 665AC_CHECK_HEADER([libintl.h],
 666[NO_GETTEXT=],
 667[NO_GETTEXT=YesPlease])
 668AC_SUBST(NO_GETTEXT)
 669
 670if test -z "$NO_GETTEXT"; then
 671    test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl"
 672fi
 673
 674## Checks for header files.
 675AC_MSG_NOTICE([CHECKS for header files])
 676#
 677# Define NO_SYS_SELECT_H if you don't have sys/select.h.
 678AC_CHECK_HEADER([sys/select.h],
 679[NO_SYS_SELECT_H=],
 680[NO_SYS_SELECT_H=UnfortunatelyYes])
 681AC_SUBST(NO_SYS_SELECT_H)
 682#
 683# Define NO_SYS_POLL_H if you don't have sys/poll.h
 684AC_CHECK_HEADER([sys/poll.h],
 685[NO_SYS_POLL_H=],
 686[NO_SYS_POLL_H=UnfortunatelyYes])
 687AC_SUBST(NO_SYS_POLL_H)
 688#
 689# Define NO_INTTYPES_H if you don't have inttypes.h
 690AC_CHECK_HEADER([inttypes.h],
 691[NO_INTTYPES_H=],
 692[NO_INTTYPES_H=UnfortunatelyYes])
 693AC_SUBST(NO_INTTYPES_H)
 694#
 695# Define OLD_ICONV if your library has an old iconv(), where the second
 696# (input buffer pointer) parameter is declared with type (const char **).
 697AC_DEFUN([OLDICONVTEST_SRC], [
 698AC_LANG_PROGRAM([[
 699#include <iconv.h>
 700
 701extern size_t iconv(iconv_t cd,
 702                    char **inbuf, size_t *inbytesleft,
 703                    char **outbuf, size_t *outbytesleft);
 704]], [])])
 705
 706GIT_STASH_FLAGS($ICONVDIR)
 707
 708AC_MSG_CHECKING([for old iconv()])
 709AC_COMPILE_IFELSE([OLDICONVTEST_SRC],
 710        [AC_MSG_RESULT([no])],
 711        [AC_MSG_RESULT([yes])
 712        OLD_ICONV=UnfortunatelyYes])
 713
 714GIT_UNSTASH_FLAGS($ICONVDIR)
 715
 716AC_SUBST(OLD_ICONV)
 717
 718## Checks for typedefs, structures, and compiler characteristics.
 719AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
 720#
 721TYPE_SOCKLEN_T
 722case $ac_cv_type_socklen_t in
 723  yes)  ;;
 724  *)    AC_SUBST([SOCKLEN_T], [$git_cv_socklen_t_equiv]) ;;
 725esac
 726
 727# Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
 728AC_CHECK_MEMBER(struct dirent.d_ino,
 729[NO_D_INO_IN_DIRENT=],
 730[NO_D_INO_IN_DIRENT=YesPlease],
 731[#include <dirent.h>])
 732AC_SUBST(NO_D_INO_IN_DIRENT)
 733#
 734# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
 735# d_type in struct dirent (latest Cygwin -- will be fixed soonish).
 736AC_CHECK_MEMBER(struct dirent.d_type,
 737[NO_D_TYPE_IN_DIRENT=],
 738[NO_D_TYPE_IN_DIRENT=YesPlease],
 739[#include <dirent.h>])
 740AC_SUBST(NO_D_TYPE_IN_DIRENT)
 741#
 742# Define NO_SOCKADDR_STORAGE if your platform does not have struct
 743# sockaddr_storage.
 744AC_CHECK_TYPE(struct sockaddr_storage,
 745[NO_SOCKADDR_STORAGE=],
 746[NO_SOCKADDR_STORAGE=YesPlease],[
 747#include <sys/types.h>
 748#include <sys/socket.h>
 749])
 750AC_SUBST(NO_SOCKADDR_STORAGE)
 751#
 752# Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
 753AC_CHECK_TYPE([struct addrinfo],[
 754 GIT_CHECK_FUNC([getaddrinfo],
 755  [NO_IPV6=],
 756  [NO_IPV6=YesPlease])
 757],[NO_IPV6=YesPlease],[
 758#include <sys/types.h>
 759#include <sys/socket.h>
 760#include <netdb.h>
 761])
 762AC_SUBST(NO_IPV6)
 763#
 764# Define NO_REGEX if you have no or inferior regex support in your C library.
 765AC_CACHE_CHECK([whether the platform regex can handle null bytes],
 766 [ac_cv_c_excellent_regex], [
 767AC_EGREP_CPP(yippeeyeswehaveit,
 768        AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
 769#include <regex.h>
 770],
 771[#ifdef REG_STARTEND
 772yippeeyeswehaveit
 773#endif
 774]),
 775        [ac_cv_c_excellent_regex=yes],
 776        [ac_cv_c_excellent_regex=no])
 777])
 778if test $ac_cv_c_excellent_regex = yes; then
 779        NO_REGEX=
 780else
 781        NO_REGEX=YesPlease
 782fi
 783AC_SUBST(NO_REGEX)
 784#
 785# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
 786# when attempting to read from an fopen'ed directory.
 787AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
 788 [ac_cv_fread_reads_directories],
 789[
 790AC_RUN_IFELSE(
 791        [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
 792                [[char c;
 793                FILE *f = fopen(".", "r");
 794                return f && fread(&c, 1, 1, f)]])],
 795        [ac_cv_fread_reads_directories=no],
 796        [ac_cv_fread_reads_directories=yes])
 797])
 798if test $ac_cv_fread_reads_directories = yes; then
 799        FREAD_READS_DIRECTORIES=UnfortunatelyYes
 800else
 801        FREAD_READS_DIRECTORIES=
 802fi
 803AC_SUBST(FREAD_READS_DIRECTORIES)
 804#
 805# Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
 806# or vsnprintf() return -1 instead of number of characters which would
 807# have been written to the final string if enough space had been available.
 808AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
 809 [ac_cv_snprintf_returns_bogus],
 810[
 811AC_RUN_IFELSE(
 812        [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
 813                #include "stdarg.h"
 814
 815                int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
 816                {
 817                  int ret;
 818                  va_list ap;
 819                  va_start(ap, format);
 820                  ret = vsnprintf(str, maxsize, format, ap);
 821                  va_end(ap);
 822                  return ret;
 823                }],
 824                [[char buf[6];
 825                  if (test_vsnprintf(buf, 3, "%s", "12345") != 5
 826                      || strcmp(buf, "12")) return 1;
 827                  if (snprintf(buf, 3, "%s", "12345") != 5
 828                      || strcmp(buf, "12")) return 1]])],
 829        [ac_cv_snprintf_returns_bogus=no],
 830        [ac_cv_snprintf_returns_bogus=yes])
 831])
 832if test $ac_cv_snprintf_returns_bogus = yes; then
 833        SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
 834else
 835        SNPRINTF_RETURNS_BOGUS=
 836fi
 837AC_SUBST(SNPRINTF_RETURNS_BOGUS)
 838
 839
 840## Checks for library functions.
 841## (in default C library and libraries checked by AC_CHECK_LIB)
 842AC_MSG_NOTICE([CHECKS for library functions])
 843#
 844# Define NO_LIBGEN_H if you don't have libgen.h.
 845AC_CHECK_HEADER([libgen.h],
 846[NO_LIBGEN_H=],
 847[NO_LIBGEN_H=YesPlease])
 848AC_SUBST(NO_LIBGEN_H)
 849#
 850# Define HAVE_PATHS_H if you have paths.h.
 851AC_CHECK_HEADER([paths.h],
 852[HAVE_PATHS_H=YesPlease],
 853[HAVE_PATHS_H=])
 854AC_SUBST(HAVE_PATHS_H)
 855#
 856# Define HAVE_LIBCHARSET_H if have libcharset.h
 857AC_CHECK_HEADER([libcharset.h],
 858[HAVE_LIBCHARSET_H=YesPlease],
 859[HAVE_LIBCHARSET_H=])
 860AC_SUBST(HAVE_LIBCHARSET_H)
 861# Define CHARSET_LIB if libiconv does not export the locale_charset symbol
 862# and libcharset does
 863CHARSET_LIB=
 864AC_CHECK_LIB([iconv], [locale_charset],
 865       [],
 866       [AC_CHECK_LIB([charset], [locale_charset],
 867                     [CHARSET_LIB=-lcharset])
 868       ]
 869)
 870AC_SUBST(CHARSET_LIB)
 871#
 872# Define NO_STRCASESTR if you don't have strcasestr.
 873GIT_CHECK_FUNC(strcasestr,
 874[NO_STRCASESTR=],
 875[NO_STRCASESTR=YesPlease])
 876AC_SUBST(NO_STRCASESTR)
 877#
 878# Define NO_STRTOK_R if you don't have strtok_r
 879GIT_CHECK_FUNC(strtok_r,
 880[NO_STRTOK_R=],
 881[NO_STRTOK_R=YesPlease])
 882AC_SUBST(NO_STRTOK_R)
 883#
 884# Define NO_FNMATCH if you don't have fnmatch
 885GIT_CHECK_FUNC(fnmatch,
 886[NO_FNMATCH=],
 887[NO_FNMATCH=YesPlease])
 888AC_SUBST(NO_FNMATCH)
 889#
 890# Define NO_FNMATCH_CASEFOLD if your fnmatch function doesn't have the
 891# FNM_CASEFOLD GNU extension.
 892AC_CACHE_CHECK([whether the fnmatch function supports the FNMATCH_CASEFOLD GNU extension],
 893 [ac_cv_c_excellent_fnmatch], [
 894AC_EGREP_CPP(yippeeyeswehaveit,
 895        AC_LANG_PROGRAM([
 896#include <fnmatch.h>
 897],
 898[#ifdef FNM_CASEFOLD
 899yippeeyeswehaveit
 900#endif
 901]),
 902        [ac_cv_c_excellent_fnmatch=yes],
 903        [ac_cv_c_excellent_fnmatch=no])
 904])
 905if test $ac_cv_c_excellent_fnmatch = yes; then
 906        NO_FNMATCH_CASEFOLD=
 907else
 908        NO_FNMATCH_CASEFOLD=YesPlease
 909fi
 910AC_SUBST(NO_FNMATCH_CASEFOLD)
 911#
 912# Define NO_MEMMEM if you don't have memmem.
 913GIT_CHECK_FUNC(memmem,
 914[NO_MEMMEM=],
 915[NO_MEMMEM=YesPlease])
 916AC_SUBST(NO_MEMMEM)
 917#
 918# Define NO_STRLCPY if you don't have strlcpy.
 919GIT_CHECK_FUNC(strlcpy,
 920[NO_STRLCPY=],
 921[NO_STRLCPY=YesPlease])
 922AC_SUBST(NO_STRLCPY)
 923#
 924# Define NO_UINTMAX_T if your platform does not have uintmax_t
 925AC_CHECK_TYPE(uintmax_t,
 926[NO_UINTMAX_T=],
 927[NO_UINTMAX_T=YesPlease],[
 928#include <inttypes.h>
 929])
 930AC_SUBST(NO_UINTMAX_T)
 931#
 932# Define NO_STRTOUMAX if you don't have strtoumax in the C library.
 933GIT_CHECK_FUNC(strtoumax,
 934[NO_STRTOUMAX=],
 935[NO_STRTOUMAX=YesPlease])
 936AC_SUBST(NO_STRTOUMAX)
 937#
 938# Define NO_SETENV if you don't have setenv in the C library.
 939GIT_CHECK_FUNC(setenv,
 940[NO_SETENV=],
 941[NO_SETENV=YesPlease])
 942AC_SUBST(NO_SETENV)
 943#
 944# Define NO_UNSETENV if you don't have unsetenv in the C library.
 945GIT_CHECK_FUNC(unsetenv,
 946[NO_UNSETENV=],
 947[NO_UNSETENV=YesPlease])
 948AC_SUBST(NO_UNSETENV)
 949#
 950# Define NO_MKDTEMP if you don't have mkdtemp in the C library.
 951GIT_CHECK_FUNC(mkdtemp,
 952[NO_MKDTEMP=],
 953[NO_MKDTEMP=YesPlease])
 954AC_SUBST(NO_MKDTEMP)
 955#
 956# Define NO_MKSTEMPS if you don't have mkstemps in the C library.
 957GIT_CHECK_FUNC(mkstemps,
 958[NO_MKSTEMPS=],
 959[NO_MKSTEMPS=YesPlease])
 960AC_SUBST(NO_MKSTEMPS)
 961#
 962# Define NO_INITGROUPS if you don't have initgroups in the C library.
 963GIT_CHECK_FUNC(initgroups,
 964[NO_INITGROUPS=],
 965[NO_INITGROUPS=YesPlease])
 966AC_SUBST(NO_INITGROUPS)
 967#
 968#
 969# Define NO_MMAP if you want to avoid mmap.
 970#
 971# Define NO_ICONV if your libc does not properly support iconv.
 972
 973
 974## Other checks.
 975# Define USE_PIC if you need the main git objects to be built with -fPIC
 976# in order to build and link perl/Git.so.  x86-64 seems to need this.
 977#
 978# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
 979# Enable it on Windows.  By default, symrefs are still used.
 980#
 981# Define NO_PTHREADS if we do not have pthreads.
 982#
 983# Define PTHREAD_LIBS to the linker flag used for Pthread support.
 984AC_DEFUN([PTHREADTEST_SRC], [
 985AC_LANG_PROGRAM([[
 986#include <pthread.h>
 987]], [[
 988        pthread_mutex_t test_mutex;
 989        pthread_key_t test_key;
 990        int retcode = 0;
 991        retcode |= pthread_key_create(&test_key, (void *)0);
 992        retcode |= pthread_mutex_init(&test_mutex,(void *)0);
 993        retcode |= pthread_mutex_lock(&test_mutex);
 994        retcode |= pthread_mutex_unlock(&test_mutex);
 995        return retcode;
 996]])])
 997
 998dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(
 999dnl   [[#include <pthread.h>]],
1000dnl   [[pthread_mutex_t test_mutex;]]
1001dnl )])
1002
1003NO_PTHREADS=UnfortunatelyYes
1004PTHREAD_LIBS=
1005
1006if test -n "$USER_NOPTHREAD"; then
1007   AC_MSG_NOTICE([Skipping POSIX Threads at user request.])
1008# handle these separately since PTHREAD_CFLAGS could be '-lpthreads
1009# -D_REENTRANT' or some such.
1010elif test -z "$PTHREAD_CFLAGS"; then
1011  threads_found=no
1012  for opt in -mt -pthread -lpthread; do
1013     old_CFLAGS="$CFLAGS"
1014     CFLAGS="$opt $CFLAGS"
1015     AC_MSG_CHECKING([Checking for POSIX Threads with '$opt'])
1016     AC_LINK_IFELSE([PTHREADTEST_SRC],
1017        [AC_MSG_RESULT([yes])
1018                NO_PTHREADS=
1019                PTHREAD_LIBS="$opt"
1020                PTHREAD_CFLAGS="$opt"
1021                threads_found=yes
1022                break
1023        ],
1024        [AC_MSG_RESULT([no])])
1025      CFLAGS="$old_CFLAGS"
1026  done
1027  if test $threads_found != yes; then
1028    AC_CHECK_LIB([pthread], [pthread_create],
1029        [PTHREAD_LIBS="-lpthread"],
1030        [NO_PTHREADS=UnfortunatelyYes])
1031  fi
1032else
1033  old_CFLAGS="$CFLAGS"
1034  CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
1035  AC_MSG_CHECKING([Checking for POSIX Threads with '$PTHREAD_CFLAGS'])
1036  AC_LINK_IFELSE([PTHREADTEST_SRC],
1037        [AC_MSG_RESULT([yes])
1038                NO_PTHREADS=
1039                PTHREAD_LIBS="$PTHREAD_CFLAGS"
1040        ],
1041        [AC_MSG_RESULT([no])])
1042
1043  CFLAGS="$old_CFLAGS"
1044fi
1045
1046CFLAGS="$old_CFLAGS"
1047
1048AC_SUBST(PTHREAD_CFLAGS)
1049AC_SUBST(PTHREAD_LIBS)
1050AC_SUBST(NO_PTHREADS)
1051
1052## Output files
1053AC_CONFIG_FILES(["${config_file}":"${config_in}":"${config_append}"])
1054AC_OUTPUT
1055
1056
1057## Cleanup
1058rm -f "${config_append}"