configure.ac

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