1# -*- Autoconf -*- 2# Process this file with autoconf to produce a configure script. 3 4## Definitions of private macros. 5 6# GIT_CONF_SUBST(VAL, VAR) 7# ------------------------ 8# Cause the line "VAR=VAL" to be eventually appended to ${config_file}. 9AC_DEFUN([GIT_CONF_SUBST], 10[AC_REQUIRE([GIT_CONF_SUBST_INIT]) 11config_appended_defs="$config_appended_defs${newline}dnl 12$1=m4_if([$#],[1],[${$1}],[$2])"]) 13 14# GIT_CONF_SUBST_INIT 15# ------------------- 16# Prepare shell variables and autoconf machine required by later calls 17# to GIT_CONF_SUBST. 18AC_DEFUN([GIT_CONF_SUBST_INIT], 19 [config_appended_defs=; newline=' 20' 21 AC_CONFIG_COMMANDS([$config_file], 22 [echo "$config_appended_defs" >> "$config_file"], 23 [config_file=$config_file 24 config_appended_defs="$config_appended_defs"])]) 25 26# GIT_ARG_SET_PATH(PROGRAM) 27# ------------------------- 28# Provide --with-PROGRAM=PATH option to set PATH to PROGRAM 29# Optional second argument allows setting NO_PROGRAM=YesPlease if 30# --without-PROGRAM version used. 31AC_DEFUN([GIT_ARG_SET_PATH], 32 [AC_ARG_WITH([$1], 33 [AS_HELP_STRING([--with-$1=PATH], 34 [provide PATH to $1])], 35 [GIT_CONF_APPEND_PATH([$1], [$2])], 36 [])]) 37 38# GIT_CONF_APPEND_PATH(PROGRAM) 39# ----------------------------- 40# Parse --with-PROGRAM=PATH option to set PROGRAM_PATH=PATH 41# Used by GIT_ARG_SET_PATH(PROGRAM) 42# Optional second argument allows setting NO_PROGRAM=YesPlease if 43# --without-PROGRAM is used. 44AC_DEFUN([GIT_CONF_APPEND_PATH], 45 [m4_pushdef([GIT_UC_PROGRAM], m4_toupper([$1]))dnl 46 if test "$withval" = "no"; then 47 if test -n "$2"; then 48 GIT_UC_PROGRAM[]_PATH=$withval 49 AC_MSG_NOTICE([Disabling use of GIT_UC_PROGRAM]) 50 GIT_CONF_SUBST([NO_]GIT_UC_PROGRAM, [YesPlease]) 51 GIT_CONF_SUBST(GIT_UC_PROGRAM[]_PATH, []) 52 else 53 AC_MSG_ERROR([You cannot use git without $1]) 54 fi 55 else 56 if test "$withval" = "yes"; then 57 AC_MSG_WARN([You should provide path for --with-$1=PATH]) 58 else 59 GIT_UC_PROGRAM[]_PATH=$withval 60 AC_MSG_NOTICE([Setting GIT_UC_PROGRAM[]_PATH to $withval]) 61 GIT_CONF_SUBST(GIT_UC_PROGRAM[]_PATH, [$withval]) 62 fi 63 fi 64 m4_popdef([GIT_UC_PROGRAM])]) 65 66# GIT_PARSE_WITH(PACKAGE) 67# ----------------------- 68# For use in AC_ARG_WITH action-if-found, for packages default ON. 69# * Set NO_PACKAGE=YesPlease for --without-PACKAGE 70# * Set PACKAGEDIR=PATH for --with-PACKAGE=PATH 71# * Unset NO_PACKAGE for --with-PACKAGE without ARG 72AC_DEFUN([GIT_PARSE_WITH], 73 [m4_pushdef([GIT_UC_PACKAGE], m4_toupper([$1]))dnl 74 if test "$withval" = "no"; then 75 NO_[]GIT_UC_PACKAGE=YesPlease 76 elif test "$withval" = "yes"; then 77 NO_[]GIT_UC_PACKAGE= 78 else 79 NO_[]GIT_UC_PACKAGE= 80 GIT_UC_PACKAGE[]DIR=$withval 81 AC_MSG_NOTICE([Setting GIT_UC_PACKAGE[]DIR to $withval]) 82 GIT_CONF_SUBST(GIT_UC_PACKAGE[DIR], [$withval]) 83 fi 84 m4_popdef([GIT_UC_PACKAGE])]) 85 86# GIT_PARSE_WITH_SET_MAKE_VAR(WITHNAME, VAR, HELP_TEXT) 87# ----------------------------------------------------- 88# Set VAR to the value specied by --with-WITHNAME. 89# No verification of arguments is performed, but warnings are issued 90# if either 'yes' or 'no' is specified. 91# HELP_TEXT is presented when --help is called. 92# This is a direct way to allow setting variables in the Makefile. 93AC_DEFUN([GIT_PARSE_WITH_SET_MAKE_VAR], 94[AC_ARG_WITH([$1], 95 [AS_HELP_STRING([--with-$1=VALUE], $3)], 96 if test -n "$withval"; then 97 if test "$withval" = "yes" -o "$withval" = "no"; then 98 AC_MSG_WARN([You likely do not want either 'yes' or 'no' as] 99 [a value for $1 ($2). Maybe you do...?]) 100 fi 101 AC_MSG_NOTICE([Setting $2 to $withval]) 102 GIT_CONF_SUBST([$2], [$withval]) 103 fi)])# GIT_PARSE_WITH_SET_MAKE_VAR 104 105# 106# GIT_CHECK_FUNC(FUNCTION, IFTRUE, IFFALSE) 107# ----------------------------------------- 108# Similar to AC_CHECK_FUNC, but on systems that do not generate 109# warnings for missing prototypes (e.g. FreeBSD when compiling without 110# -Wall), it does not work. By looking for function definition in 111# libraries, this problem can be worked around. 112AC_DEFUN([GIT_CHECK_FUNC],[AC_CHECK_FUNC([$1],[ 113 AC_SEARCH_LIBS([$1],, 114 [$2],[$3]) 115],[$3])]) 116 117# 118# GIT_STASH_FLAGS(BASEPATH_VAR) 119# ----------------------------- 120# Allow for easy stashing of LDFLAGS and CPPFLAGS before running 121# tests that may want to take user settings into account. 122AC_DEFUN([GIT_STASH_FLAGS],[ 123if test -n "$1"; then 124 old_CPPFLAGS="$CPPFLAGS" 125 old_LDFLAGS="$LDFLAGS" 126 CPPFLAGS="-I$1/include $CPPFLAGS" 127 LDFLAGS="-L$1/$lib $LDFLAGS" 128fi 129]) 130 131dnl 132dnl GIT_UNSTASH_FLAGS(BASEPATH_VAR) 133dnl ----------------------------- 134dnl Restore the stashed *FLAGS values. 135AC_DEFUN([GIT_UNSTASH_FLAGS],[ 136if test -n "$1"; then 137 CPPFLAGS="$old_CPPFLAGS" 138 LDFLAGS="$old_LDFLAGS" 139fi 140]) 141 142## Configure body starts here. 143 144AC_PREREQ(2.59) 145AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org]) 146 147AC_CONFIG_SRCDIR([git.c]) 148 149config_file=config.mak.autogen 150config_in=config.mak.in 151 152GIT_CONF_SUBST([AUTOCONFIGURED], [YesPlease]) 153 154# Directories holding "saner" versions of common or POSIX binaries. 155AC_ARG_WITH([sane-tool-path], 156 [AS_HELP_STRING( 157 [--with-sane-tool-path=DIR-1[[:DIR-2...:DIR-n]]], 158 [Directories to prepend to PATH in build system and generated scripts])], 159 [if test "$withval" = "no"; then 160 withval='' 161 else 162 AC_MSG_NOTICE([Setting SANE_TOOL_PATH to '$withval']) 163 fi 164 GIT_CONF_SUBST([SANE_TOOL_PATH], [$withval])], 165 [# If the "--with-sane-tool-path" option was not given, don't touch 166 # SANE_TOOL_PATH here, but let defaults in Makefile take care of it. 167 # This should minimize spurious differences in the behaviour of the 168 # Git build system when configure is used w.r.t. when it is not. 169 :]) 170 171## Site configuration related to programs (before tests) 172## --with-PACKAGE[=ARG] and --without-PACKAGE 173# 174# Set lib to alternative name of lib directory (e.g. lib64) 175AC_ARG_WITH([lib], 176 [AS_HELP_STRING([--with-lib=ARG], 177 [ARG specifies alternative name for lib directory])], 178 [if test "$withval" = "no" || test "$withval" = "yes"; then 179 AC_MSG_WARN([You should provide name for --with-lib=ARG]) 180 else 181 lib=$withval 182 AC_MSG_NOTICE([Setting lib to '$lib']) 183 GIT_CONF_SUBST([lib]) 184 fi]) 185 186if test -z "$lib"; then 187 AC_MSG_NOTICE([Setting lib to 'lib' (the default)]) 188 lib=lib 189fi 190 191AC_ARG_ENABLE([pthreads], 192 [AS_HELP_STRING([--enable-pthreads=FLAGS], 193 [FLAGS is the value to pass to the compiler to enable POSIX Threads.] 194 [The default if FLAGS is not specified is to try first -pthread] 195 [and then -lpthread.] 196 [--disable-pthreads will disable threading.])], 197[ 198if test "x$enableval" = "xyes"; then 199 AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads]) 200elif test "x$enableval" != "xno"; then 201 PTHREAD_CFLAGS=$enableval 202 AC_MSG_NOTICE([Setting '$PTHREAD_CFLAGS' as the FLAGS to enable POSIX Threads]) 203else 204 AC_MSG_NOTICE([POSIX Threads will be disabled.]) 205 NO_PTHREADS=YesPlease 206 USER_NOPTHREAD=1 207fi], 208[ 209 AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads.]) 210]) 211 212# Define option to enable JavaScript minification 213AC_ARG_ENABLE([jsmin], 214[AS_HELP_STRING([--enable-jsmin=PATH], 215 [PATH is the name of a JavaScript minifier or the absolute path to one.])], 216[ 217 JSMIN=$enableval; 218 AC_MSG_NOTICE([Setting JSMIN to '$JSMIN' to enable JavaScript minifying]) 219 GIT_CONF_SUBST([JSMIN]) 220]) 221 222# Define option to enable CSS minification 223AC_ARG_ENABLE([cssmin], 224[AS_HELP_STRING([--enable-cssmin=PATH], 225 [PATH is the name of a CSS minifier or the absolute path to one.])], 226[ 227 CSSMIN=$enableval; 228 AC_MSG_NOTICE([Setting CSSMIN to '$CSSMIN' to enable CSS minifying]) 229 GIT_CONF_SUBST([CSSMIN]) 230]) 231 232## Site configuration (override autodetection) 233## --with-PACKAGE[=ARG] and --without-PACKAGE 234AC_MSG_NOTICE([CHECKS for site configuration]) 235# 236# Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability 237# tests. These tests take up a significant amount of the total test time 238# but are not needed unless you plan to talk to SVN repos. 239# 240# Define PPC_SHA1 environment variable when running make to make use of 241# a bundled SHA1 routine optimized for PowerPC. 242# 243# Define NO_OPENSSL environment variable if you do not have OpenSSL. 244# 245# Define OPENSSLDIR=/foo/bar if your openssl header and library files are in 246# /foo/bar/include and /foo/bar/lib directories. 247AC_ARG_WITH(openssl, 248AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)]) 249AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]), 250GIT_PARSE_WITH([openssl])) 251 252# Define USE_LIBPCRE if you have and want to use libpcre. Various 253# commands such as log and grep offer runtime options to use 254# Perl-compatible regular expressions instead of standard or extended 255# POSIX regular expressions. 256# 257# USE_LIBPCRE is a synonym for USE_LIBPCRE2, define USE_LIBPCRE1 258# instead if you'd like to use the legacy version 1 of the PCRE 259# library. Support for version 1 will likely be removed in some future 260# release of Git, as upstream has all but abandoned it. 261# 262# Define LIBPCREDIR=/foo/bar if your PCRE header and library files are in 263# /foo/bar/include and /foo/bar/lib directories. 264# 265AC_ARG_WITH(libpcre, 266AS_HELP_STRING([--with-libpcre],[synonym for --with-libpcre2]), 267 if test "$withval" = "no"; then 268 USE_LIBPCRE2= 269 elif test "$withval" = "yes"; then 270 USE_LIBPCRE2=YesPlease 271 else 272 USE_LIBPCRE2=YesPlease 273 LIBPCREDIR=$withval 274 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR]) 275 dnl USE_LIBPCRE2 can still be modified below, so don't substitute 276 dnl it yet. 277 GIT_CONF_SUBST([LIBPCREDIR]) 278 fi) 279 280AC_ARG_WITH(libpcre1, 281AS_HELP_STRING([--with-libpcre1],[support Perl-compatible regexes via libpcre1 (default is NO)]) 282AS_HELP_STRING([], [ARG can be also prefix for libpcre library and headers]), 283 if test "$withval" = "no"; then 284 USE_LIBPCRE1= 285 elif test "$withval" = "yes"; then 286 USE_LIBPCRE1=YesPlease 287 else 288 USE_LIBPCRE1=YesPlease 289 LIBPCREDIR=$withval 290 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR]) 291 dnl USE_LIBPCRE1 can still be modified below, so don't substitute 292 dnl it yet. 293 GIT_CONF_SUBST([LIBPCREDIR]) 294 fi) 295 296AC_ARG_WITH(libpcre2, 297AS_HELP_STRING([--with-libpcre2],[support Perl-compatible regexes via libpcre2 (default is NO)]) 298AS_HELP_STRING([], [ARG can be also prefix for libpcre library and headers]), 299 if test -n "$USE_LIBPCRE2"; then 300 AC_MSG_ERROR([Only supply one of --with-libpcre or its synonym --with-libpcre2!]) 301 fi 302 303 if test -n "$USE_LIBPCRE1"; then 304 AC_MSG_ERROR([Only supply one of --with-libpcre1 or --with-libpcre2!]) 305 fi 306 307 if test "$withval" = "no"; then 308 USE_LIBPCRE2= 309 elif test "$withval" = "yes"; then 310 USE_LIBPCRE2=YesPlease 311 else 312 USE_LIBPCRE2=YesPlease 313 LIBPCREDIR=$withval 314 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR]) 315 dnl USE_LIBPCRE2 can still be modified below, so don't substitute 316 dnl it yet. 317 GIT_CONF_SUBST([LIBPCREDIR]) 318 fi) 319# 320# Define HAVE_ALLOCA_H if you have working alloca(3) defined in that header. 321AC_FUNC_ALLOCA 322case $ac_cv_working_alloca_h in 323 yes) HAVE_ALLOCA_H=YesPlease;; 324 *) HAVE_ALLOCA_H='';; 325esac 326GIT_CONF_SUBST([HAVE_ALLOCA_H]) 327# 328# Define NO_CURL if you do not have curl installed. git-http-pull and 329# git-http-push are not built, and you cannot use http:// and https:// 330# transports. 331# 332# Define CURLDIR=/foo/bar if your curl header and library files are in 333# /foo/bar/include and /foo/bar/lib directories. 334AC_ARG_WITH(curl, 335AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)]) 336AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]), 337GIT_PARSE_WITH(curl)) 338# 339# Define NO_EXPAT if you do not have expat installed. git-http-push is 340# not built, and you cannot push using http:// and https:// transports. 341# 342# Define EXPATDIR=/foo/bar if your expat header and library files are in 343# /foo/bar/include and /foo/bar/lib directories. 344AC_ARG_WITH(expat, 345AS_HELP_STRING([--with-expat], 346[support git-push using http:// and https:// transports via WebDAV (default is YES)]) 347AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]), 348GIT_PARSE_WITH(expat)) 349# 350# Define NO_FINK if you are building on Darwin/Mac OS X, have Fink 351# installed in /sw, but don't want GIT to link against any libraries 352# installed there. If defined you may specify your own (or Fink's) 353# include directories and library directories by defining CFLAGS 354# and LDFLAGS appropriately. 355# 356# Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X, 357# have DarwinPorts installed in /opt/local, but don't want GIT to 358# link against any libraries installed there. If defined you may 359# specify your own (or DarwinPort's) include directories and 360# library directories by defining CFLAGS and LDFLAGS appropriately. 361# 362# Define NO_MMAP if you want to avoid mmap. 363# 364# Define NO_ICONV if your libc does not properly support iconv. 365AC_ARG_WITH(iconv, 366AS_HELP_STRING([--without-iconv], 367[if your architecture doesn't properly support iconv]) 368AS_HELP_STRING([--with-iconv=PATH], 369[PATH is prefix for libiconv library and headers]) 370AS_HELP_STRING([], 371[used only if you need linking with libiconv]), 372GIT_PARSE_WITH(iconv)) 373 374## --enable-FEATURE[=ARG] and --disable-FEATURE 375# 376# Define USE_NSEC below if you want git to care about sub-second file mtimes 377# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and 378# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely 379# randomly break unless your underlying filesystem supports those sub-second 380# times (my ext3 doesn't). 381# 382# Define USE_STDEV below if you want git to care about the underlying device 383# change being considered an inode change from the update-index perspective. 384 385# 386# Allow user to set ETC_GITCONFIG variable 387GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG, 388 Use VALUE instead of /etc/gitconfig as the 389 global git configuration file. 390 If VALUE is not fully qualified it will be interpreted 391 as a path relative to the computed prefix at runtime.) 392 393# 394# Allow user to set ETC_GITATTRIBUTES variable 395GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES, 396 Use VALUE instead of /etc/gitattributes as the 397 global git attributes file. 398 If VALUE is not fully qualified it will be interpreted 399 as a path relative to the computed prefix at runtime.) 400 401# 402# Allow user to set the default pager 403GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER, 404 Use VALUE as the fall-back pager instead of 'less'. 405 This is used by things like 'git log' when the user 406 does not specify a pager to use through alternate 407 methods. eg: /usr/bin/pager) 408# 409# Allow user to set the default editor 410GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR, 411 Use VALUE as the fall-back editor instead of 'vi'. 412 This is used by things like 'git commit' when the user 413 does not specify a preferred editor through other 414 methods. eg: /usr/bin/editor) 415 416# 417# Define SHELL_PATH to provide path to shell. 418GIT_ARG_SET_PATH(shell) 419# 420# Define PERL_PATH to provide path to Perl. 421GIT_ARG_SET_PATH(perl) 422# 423# Define PYTHON_PATH to provide path to Python. 424GIT_ARG_SET_PATH(python, allow-without) 425# 426# Define ZLIB_PATH to provide path to zlib. 427GIT_ARG_SET_PATH(zlib) 428# 429# Declare the with-tcltk/without-tcltk options. 430AC_ARG_WITH(tcltk, 431AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)]) 432AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.]) 433AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if]) 434AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]), 435GIT_PARSE_WITH(tcltk)) 436# 437 438 439## Checks for programs. 440AC_MSG_NOTICE([CHECKS for programs]) 441# 442AC_PROG_CC([cc gcc]) 443AC_C_INLINE 444case $ac_cv_c_inline in 445 inline | yes | no) INLINE='';; 446 *) INLINE=$ac_cv_c_inline ;; 447esac 448GIT_CONF_SUBST([INLINE]) 449 450# which switch to pass runtime path to dynamic libraries to the linker 451AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [ 452 SAVE_LDFLAGS="${LDFLAGS}" 453 LDFLAGS="${SAVE_LDFLAGS} -R /" 454 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no]) 455 LDFLAGS="${SAVE_LDFLAGS}" 456]) 457if test "$git_cv_ld_dashr" = "yes"; then 458 CC_LD_DYNPATH=-R 459else 460 AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [ 461 SAVE_LDFLAGS="${LDFLAGS}" 462 LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/" 463 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no]) 464 LDFLAGS="${SAVE_LDFLAGS}" 465 ]) 466 if test "$git_cv_ld_wl_rpath" = "yes"; then 467 CC_LD_DYNPATH=-Wl,-rpath, 468 else 469 AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [ 470 SAVE_LDFLAGS="${LDFLAGS}" 471 LDFLAGS="${SAVE_LDFLAGS} -rpath /" 472 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no]) 473 LDFLAGS="${SAVE_LDFLAGS}" 474 ]) 475 if test "$git_cv_ld_rpath" = "yes"; then 476 CC_LD_DYNPATH=-rpath 477 else 478 CC_LD_DYNPATH= 479 AC_MSG_WARN([linker does not support runtime path to dynamic libraries]) 480 fi 481 fi 482fi 483GIT_CONF_SUBST([CC_LD_DYNPATH]) 484#AC_PROG_INSTALL # needs install-sh or install.sh in sources 485AC_CHECK_TOOLS(AR, [gar ar], :) 486AC_CHECK_PROGS(TAR, [gtar tar]) 487AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff]) 488# TCLTK_PATH will be set to some value if we want Tcl/Tk 489# or will be empty otherwise. 490if test -n "$NO_TCLTK"; then 491 TCLTK_PATH= 492else 493 if test "$with_tcltk" = ""; then 494 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'. 495 TCLTK_PATH=wish 496 elif test "$with_tcltk" = "yes"; then 497 # Tcl/Tk check requested. 498 AC_CHECK_PROGS(TCLTK_PATH, [wish], ) 499 else 500 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk]) 501 TCLTK_PATH="$with_tcltk" 502 fi 503fi 504GIT_CONF_SUBST([TCLTK_PATH]) 505AC_CHECK_PROGS(ASCIIDOC, [asciidoc]) 506if test -n "$ASCIIDOC"; then 507 AC_MSG_CHECKING([for asciidoc version]) 508 asciidoc_version=`$ASCIIDOC --version 2>/dev/null` 509 case "${asciidoc_version}" in 510 asciidoc' '8*) 511 AC_MSG_RESULT([${asciidoc_version}]) 512 ;; 513 *) 514 AC_MSG_RESULT([${asciidoc_version} (unknown)]) 515 ;; 516 esac 517fi 518 519if grep -a ascii configure.ac >/dev/null; then 520 AC_MSG_RESULT([Using 'grep -a' for sane_grep]) 521 SANE_TEXT_GREP=-a 522else 523 SANE_TEXT_GREP= 524fi 525GIT_CONF_SUBST([SANE_TEXT_GREP]) 526 527## Checks for libraries. 528AC_MSG_NOTICE([CHECKS for libraries]) 529# 530# Define NO_OPENSSL environment variable if you do not have OpenSSL. 531# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin). 532 533GIT_STASH_FLAGS($OPENSSLDIR) 534 535AC_CHECK_LIB([crypto], [SHA1_Init], 536[NEEDS_SSL_WITH_CRYPTO=], 537[AC_CHECK_LIB([ssl], [SHA1_Init], 538 [NEEDS_SSL_WITH_CRYPTO=YesPlease NO_OPENSSL=], 539 [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])]) 540 541GIT_UNSTASH_FLAGS($OPENSSLDIR) 542 543GIT_CONF_SUBST([NEEDS_SSL_WITH_CRYPTO]) 544GIT_CONF_SUBST([NO_OPENSSL]) 545 546# 547# Handle the USE_LIBPCRE1 and USE_LIBPCRE2 options potentially set 548# above. 549# 550 551if test -n "$USE_LIBPCRE1"; then 552 553GIT_STASH_FLAGS($LIBPCREDIR) 554 555AC_CHECK_LIB([pcre], [pcre_version], 556[USE_LIBPCRE1=YesPlease], 557[USE_LIBPCRE1=]) 558 559GIT_UNSTASH_FLAGS($LIBPCREDIR) 560 561GIT_CONF_SUBST([USE_LIBPCRE1]) 562 563fi 564 565 566if test -n "$USE_LIBPCRE2"; then 567 568GIT_STASH_FLAGS($LIBPCREDIR) 569 570AC_CHECK_LIB([pcre2-8], [pcre2_config_8], 571[USE_LIBPCRE2=YesPlease], 572[USE_LIBPCRE2=]) 573 574GIT_UNSTASH_FLAGS($LIBPCREDIR) 575 576GIT_CONF_SUBST([USE_LIBPCRE2]) 577 578fi 579 580# 581# Define NO_CURL if you do not have libcurl installed. git-http-pull and 582# git-http-push are not built, and you cannot use http:// and https:// 583# transports. 584 585GIT_STASH_FLAGS($CURLDIR) 586 587AC_CHECK_LIB([curl], [curl_global_init], 588[NO_CURL=], 589[NO_CURL=YesPlease]) 590 591GIT_UNSTASH_FLAGS($CURLDIR) 592 593GIT_CONF_SUBST([NO_CURL]) 594 595if test -z "$NO_CURL"; then 596 597AC_CHECK_PROG([CURL_CONFIG], [curl-config], 598[curl-config], 599[no]) 600 601if test $CURL_CONFIG != no; then 602 GIT_CONF_SUBST([CURL_CONFIG]) 603 604 if test -z "$CURL_CONFIG_OPTS"; then 605 CURL_CONFIG_OPTS="--libs" 606 fi 607 608 CURL_LDFLAGS=$($CURL_CONFIG $CURL_CONFIG_OPTS) 609 AC_MSG_NOTICE([Setting CURL_LDFLAGS to '$CURL_LDFLAGS']) 610 GIT_CONF_SUBST([CURL_LDFLAGS], [$CURL_LDFLAGS]) 611fi 612 613fi 614 615 616# 617# Define NO_EXPAT if you do not have expat installed. git-http-push is 618# not built, and you cannot push using http:// and https:// transports. 619 620GIT_STASH_FLAGS($EXPATDIR) 621 622AC_CHECK_LIB([expat], [XML_ParserCreate], 623[NO_EXPAT=], 624[NO_EXPAT=YesPlease]) 625 626GIT_UNSTASH_FLAGS($EXPATDIR) 627 628GIT_CONF_SUBST([NO_EXPAT]) 629 630# 631# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and 632# some Solaris installations). 633# Define NO_ICONV if neither libc nor libiconv support iconv. 634 635if test -z "$NO_ICONV"; then 636 637GIT_STASH_FLAGS($ICONVDIR) 638 639AC_DEFUN([ICONVTEST_SRC], 640[AC_LANG_PROGRAM([#include <iconv.h>], 641 [iconv_open("", "");])]) 642 643if test -n "$ICONVDIR"; then 644 lib_order="-liconv -lc" 645else 646 lib_order="-lc -liconv" 647fi 648 649NO_ICONV=YesPlease 650 651for 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" 667done 668 669#in case of break 670LIBS="$old_LIBS" 671 672GIT_UNSTASH_FLAGS($ICONVDIR) 673 674GIT_CONF_SUBST([NEEDS_LIBICONV]) 675GIT_CONF_SUBST([NO_ICONV]) 676 677if test -n "$NO_ICONV"; then 678 NEEDS_LIBICONV= 679fi 680 681fi 682 683# 684# Define NO_DEFLATE_BOUND if deflateBound is missing from zlib. 685 686GIT_STASH_FLAGS($ZLIB_PATH) 687 688AC_DEFUN([ZLIBTEST_SRC], [ 689AC_LANG_PROGRAM([#include <zlib.h>], 690 [deflateBound(0, 0);])]) 691AC_MSG_CHECKING([for deflateBound in -lz]) 692old_LIBS="$LIBS" 693LIBS="$LIBS -lz" 694AC_LINK_IFELSE([ZLIBTEST_SRC], 695 [AC_MSG_RESULT([yes])], 696 [AC_MSG_RESULT([no]) 697 NO_DEFLATE_BOUND=yes]) 698LIBS="$old_LIBS" 699 700GIT_UNSTASH_FLAGS($ZLIB_PATH) 701 702GIT_CONF_SUBST([NO_DEFLATE_BOUND]) 703 704# 705# Define NEEDS_SOCKET if linking with libc is not enough (SunOS, 706# Patrick Mauritz). 707AC_CHECK_LIB([c], [socket], 708[NEEDS_SOCKET=], 709[NEEDS_SOCKET=YesPlease]) 710GIT_CONF_SUBST([NEEDS_SOCKET]) 711test -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. 717NEEDS_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. 721NO_INET_NTOP= 722AC_CHECK_FUNC([inet_ntop], 723 [], 724 [AC_CHECK_LIB([resolv], [inet_ntop], 725 [NEEDS_RESOLV=YesPlease], 726 [NO_INET_NTOP=YesPlease]) 727]) 728GIT_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. 732NO_INET_PTON= 733AC_CHECK_FUNC([inet_pton], 734 [], 735 [AC_CHECK_LIB([resolv], [inet_pton], 736 [NEEDS_RESOLV=YesPlease], 737 [NO_INET_PTON=YesPlease]) 738]) 739GIT_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. 743NO_HSTRERROR= 744AC_CHECK_FUNC([hstrerror], 745 [], 746 [AC_CHECK_LIB([resolv], [hstrerror], 747 [NEEDS_RESOLV=YesPlease], 748 [NO_HSTRERROR=YesPlease]) 749]) 750GIT_CONF_SUBST([NO_HSTRERROR]) 751 752dnl This must go after all the possible places for its initialization, 753dnl in the AC_CHECK_FUNC invocations above. 754GIT_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. 758test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv" 759 760AC_CHECK_LIB([c], [basename], 761[NEEDS_LIBGEN=], 762[NEEDS_LIBGEN=YesPlease]) 763GIT_CONF_SUBST([NEEDS_LIBGEN]) 764test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen" 765 766AC_DEFUN([LIBINTL_SRC], [ 767AC_LANG_PROGRAM([[ 768#include <libintl.h> 769]],[[ 770char *msg = gettext("test"); 771]])]) 772 773AC_MSG_CHECKING([if libc contains libintl]) 774AC_LINK_IFELSE([LIBINTL_SRC], 775 [AC_MSG_RESULT([yes]) 776 LIBC_CONTAINS_LIBINTL=YesPlease], 777 [AC_MSG_RESULT([no]) 778 LIBC_CONTAINS_LIBINTL=]) 779GIT_CONF_SUBST([LIBC_CONTAINS_LIBINTL]) 780 781# 782# Define NO_GETTEXT if you don't want Git output to be translated. 783# A translated Git requires GNU libintl or another gettext implementation 784AC_CHECK_HEADER([libintl.h], 785[NO_GETTEXT=], 786[NO_GETTEXT=YesPlease]) 787GIT_CONF_SUBST([NO_GETTEXT]) 788 789if test -z "$NO_GETTEXT"; then 790 test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl" 791fi 792 793## Checks for header files. 794AC_MSG_NOTICE([CHECKS for header files]) 795# 796# Define NO_SYS_SELECT_H if you don't have sys/select.h. 797AC_CHECK_HEADER([sys/select.h], 798[NO_SYS_SELECT_H=], 799[NO_SYS_SELECT_H=UnfortunatelyYes]) 800GIT_CONF_SUBST([NO_SYS_SELECT_H]) 801# 802# Define NO_POLL_H if you don't have poll.h 803AC_CHECK_HEADER([poll.h], 804[NO_POLL_H=], 805[NO_POLL_H=UnfortunatelyYes]) 806GIT_CONF_SUBST([NO_POLL_H]) 807# 808# Define NO_SYS_POLL_H if you don't have sys/poll.h 809AC_CHECK_HEADER([sys/poll.h], 810[NO_SYS_POLL_H=], 811[NO_SYS_POLL_H=UnfortunatelyYes]) 812GIT_CONF_SUBST([NO_SYS_POLL_H]) 813# 814# Define NO_INTTYPES_H if you don't have inttypes.h 815AC_CHECK_HEADER([inttypes.h], 816[NO_INTTYPES_H=], 817[NO_INTTYPES_H=UnfortunatelyYes]) 818GIT_CONF_SUBST([NO_INTTYPES_H]) 819# 820# Define OLD_ICONV if your library has an old iconv(), where the second 821# (input buffer pointer) parameter is declared with type (const char **). 822AC_DEFUN([OLDICONVTEST_SRC], [ 823AC_LANG_PROGRAM([[ 824#include <iconv.h> 825 826extern size_t iconv(iconv_t cd, 827 char **inbuf, size_t *inbytesleft, 828 char **outbuf, size_t *outbytesleft); 829]], [])]) 830 831GIT_STASH_FLAGS($ICONVDIR) 832 833AC_MSG_CHECKING([for old iconv()]) 834AC_COMPILE_IFELSE([OLDICONVTEST_SRC], 835 [AC_MSG_RESULT([no])], 836 [AC_MSG_RESULT([yes]) 837 OLD_ICONV=UnfortunatelyYes]) 838 839GIT_UNSTASH_FLAGS($ICONVDIR) 840 841GIT_CONF_SUBST([OLD_ICONV]) 842 843## Checks for typedefs, structures, and compiler characteristics. 844AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics]) 845# 846TYPE_SOCKLEN_T 847case $ac_cv_type_socklen_t in 848 yes) SOCKLEN_T='';; 849 *) SOCKLEN_T=$git_cv_socklen_t_equiv;; 850esac 851GIT_CONF_SUBST([SOCKLEN_T]) 852 853# 854# Define NO_STRUCT_ITIMERVAL if you don't have struct itimerval. 855AC_CHECK_TYPES([struct itimerval], 856[NO_STRUCT_ITIMERVAL=], 857[NO_STRUCT_ITIMERVAL=UnfortunatelyYes], 858[#include <sys/time.h>]) 859GIT_CONF_SUBST([NO_STRUCT_ITIMERVAL]) 860# 861# Define USE_ST_TIMESPEC=YesPlease when stat.st_mtimespec.tv_nsec exists. 862# Define NO_NSEC=YesPlease when neither stat.st_mtim.tv_nsec nor 863# stat.st_mtimespec.tv_nsec exists. 864AC_CHECK_MEMBER([struct stat.st_mtimespec.tv_nsec]) 865AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec]) 866if test x$ac_cv_member_struct_stat_st_mtimespec_tv_nsec = xyes; then 867 USE_ST_TIMESPEC=YesPlease 868 GIT_CONF_SUBST([USE_ST_TIMESPEC]) 869elif test x$ac_cv_member_struct_stat_st_mtim_tv_nsec != xyes; then 870 NO_NSEC=YesPlease 871 GIT_CONF_SUBST([NO_NSEC]) 872fi 873# 874# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks 875# d_type in struct dirent (latest Cygwin -- will be fixed soonish). 876AC_CHECK_MEMBER(struct dirent.d_type, 877[NO_D_TYPE_IN_DIRENT=], 878[NO_D_TYPE_IN_DIRENT=YesPlease], 879[#include <dirent.h>]) 880GIT_CONF_SUBST([NO_D_TYPE_IN_DIRENT]) 881# 882# Define NO_GECOS_IN_PWENT if you don't have pw_gecos in struct passwd 883# in the C library. 884AC_CHECK_MEMBER(struct passwd.pw_gecos, 885[NO_GECOS_IN_PWENT=], 886[NO_GECOS_IN_PWENT=YesPlease], 887[#include <pwd.h>]) 888GIT_CONF_SUBST([NO_GECOS_IN_PWENT]) 889# 890# Define NO_SOCKADDR_STORAGE if your platform does not have struct 891# sockaddr_storage. 892AC_CHECK_TYPE(struct sockaddr_storage, 893[NO_SOCKADDR_STORAGE=], 894[NO_SOCKADDR_STORAGE=YesPlease],[ 895#include <sys/types.h> 896#include <sys/socket.h> 897]) 898GIT_CONF_SUBST([NO_SOCKADDR_STORAGE]) 899# 900# Define NO_IPV6 if you lack IPv6 support and getaddrinfo(). 901AC_CHECK_TYPE([struct addrinfo],[ 902 GIT_CHECK_FUNC([getaddrinfo], 903 [NO_IPV6=], 904 [NO_IPV6=YesPlease]) 905],[NO_IPV6=YesPlease],[ 906#include <sys/types.h> 907#include <sys/socket.h> 908#include <netdb.h> 909]) 910GIT_CONF_SUBST([NO_IPV6]) 911# 912# Define NO_REGEX if your C library lacks regex support with REG_STARTEND 913# feature. 914AC_CACHE_CHECK([whether the platform regex supports REG_STARTEND], 915 [ac_cv_c_regex_with_reg_startend], [ 916AC_EGREP_CPP(yippeeyeswehaveit, 917 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT 918#include <regex.h> 919], 920[#ifdef REG_STARTEND 921yippeeyeswehaveit 922#endif 923]), 924 [ac_cv_c_regex_with_reg_startend=yes], 925 [ac_cv_c_regex_with_reg_startend=no]) 926]) 927if test $ac_cv_c_regex_with_reg_startend = yes; then 928 NO_REGEX= 929else 930 NO_REGEX=YesPlease 931fi 932GIT_CONF_SUBST([NO_REGEX]) 933# 934# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds 935# when attempting to read from an fopen'ed directory. 936AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory], 937 [ac_cv_fread_reads_directories], 938[ 939AC_RUN_IFELSE( 940 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], 941 [[ 942 FILE *f = fopen(".", "r"); 943 return f != NULL;]])], 944 [ac_cv_fread_reads_directories=no], 945 [ac_cv_fread_reads_directories=yes]) 946]) 947if test $ac_cv_fread_reads_directories = yes; then 948 FREAD_READS_DIRECTORIES=UnfortunatelyYes 949else 950 FREAD_READS_DIRECTORIES= 951fi 952GIT_CONF_SUBST([FREAD_READS_DIRECTORIES]) 953# 954# Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf() 955# or vsnprintf() return -1 instead of number of characters which would 956# have been written to the final string if enough space had been available. 957AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value], 958 [ac_cv_snprintf_returns_bogus], 959[ 960AC_RUN_IFELSE( 961 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT 962 #include "stdarg.h" 963 964 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...) 965 { 966 int ret; 967 va_list ap; 968 va_start(ap, format); 969 ret = vsnprintf(str, maxsize, format, ap); 970 va_end(ap); 971 return ret; 972 }], 973 [[char buf[6]; 974 if (test_vsnprintf(buf, 3, "%s", "12345") != 5 975 || strcmp(buf, "12")) return 1; 976 if (snprintf(buf, 3, "%s", "12345") != 5 977 || strcmp(buf, "12")) return 1]])], 978 [ac_cv_snprintf_returns_bogus=no], 979 [ac_cv_snprintf_returns_bogus=yes]) 980]) 981if test $ac_cv_snprintf_returns_bogus = yes; then 982 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes 983else 984 SNPRINTF_RETURNS_BOGUS= 985fi 986GIT_CONF_SUBST([SNPRINTF_RETURNS_BOGUS]) 987# 988# Define NEEDS_MODE_TRANSLATION if your OS strays from the typical file type 989# bits in mode values. 990AC_CACHE_CHECK([whether the platform uses typical file type bits], 991 [ac_cv_sane_mode_bits], [ 992AC_EGREP_CPP(yippeeyeswehaveit, 993 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], 994[#if S_IFMT == 0170000 && \ 995 S_IFREG == 0100000 && S_IFDIR == 0040000 && S_IFLNK == 0120000 && \ 996 S_IFBLK == 0060000 && S_IFCHR == 0020000 && \ 997 S_IFIFO == 0010000 && S_IFSOCK == 0140000 998yippeeyeswehaveit 999#endif1000]),1001 [ac_cv_sane_mode_bits=yes],1002 [ac_cv_sane_mode_bits=no])1003])1004if test $ac_cv_sane_mode_bits = yes; then1005 NEEDS_MODE_TRANSLATION=1006else1007 NEEDS_MODE_TRANSLATION=UnfortunatelyYes1008fi1009GIT_CONF_SUBST([NEEDS_MODE_TRANSLATION])101010111012## Checks for library functions.1013## (in default C library and libraries checked by AC_CHECK_LIB)1014AC_MSG_NOTICE([CHECKS for library functions])1015#1016# Define NO_LIBGEN_H if you don't have libgen.h.1017AC_CHECK_HEADER([libgen.h],1018[NO_LIBGEN_H=],1019[NO_LIBGEN_H=YesPlease])1020GIT_CONF_SUBST([NO_LIBGEN_H])1021#1022# Define HAVE_PATHS_H if you have paths.h.1023AC_CHECK_HEADER([paths.h],1024[HAVE_PATHS_H=YesPlease],1025[HAVE_PATHS_H=])1026GIT_CONF_SUBST([HAVE_PATHS_H])1027#1028# Define HAVE_LIBCHARSET_H if have libcharset.h1029AC_CHECK_HEADER([libcharset.h],1030[HAVE_LIBCHARSET_H=YesPlease],1031[HAVE_LIBCHARSET_H=])1032GIT_CONF_SUBST([HAVE_LIBCHARSET_H])1033#1034# Define HAVE_STRINGS_H if you have strings.h1035AC_CHECK_HEADER([strings.h],1036[HAVE_STRINGS_H=YesPlease],1037[HAVE_STRINGS_H=])1038GIT_CONF_SUBST([HAVE_STRINGS_H])1039# Define CHARSET_LIB if libiconv does not export the locale_charset symbol1040# and libcharset does1041CHARSET_LIB=1042AC_CHECK_LIB([iconv], [locale_charset],1043 [CHARSET_LIB=-liconv],1044 [AC_CHECK_LIB([charset], [locale_charset],1045 [CHARSET_LIB=-lcharset])])1046GIT_CONF_SUBST([CHARSET_LIB])1047#1048# Define HAVE_CLOCK_GETTIME=YesPlease if clock_gettime is available.1049GIT_CHECK_FUNC(clock_gettime,1050 [HAVE_CLOCK_GETTIME=YesPlease],1051 [HAVE_CLOCK_GETTIME=])1052GIT_CONF_SUBST([HAVE_CLOCK_GETTIME])10531054AC_DEFUN([CLOCK_MONOTONIC_SRC], [1055AC_LANG_PROGRAM([[1056#include <time.h>1057clockid_t id = CLOCK_MONOTONIC;1058]])])10591060#1061# Define HAVE_CLOCK_MONOTONIC=YesPlease if CLOCK_MONOTONIC is available.1062AC_MSG_CHECKING([for CLOCK_MONOTONIC])1063AC_COMPILE_IFELSE([CLOCK_MONOTONIC_SRC],1064 [AC_MSG_RESULT([yes])1065 HAVE_CLOCK_MONOTONIC=YesPlease],1066 [AC_MSG_RESULT([no])1067 HAVE_CLOCK_MONOTONIC=])1068GIT_CONF_SUBST([HAVE_CLOCK_MONOTONIC])1069#1070# Define NO_SETITIMER if you don't have setitimer.1071GIT_CHECK_FUNC(setitimer,1072[NO_SETITIMER=],1073[NO_SETITIMER=YesPlease])1074GIT_CONF_SUBST([NO_SETITIMER])1075#1076# Define NO_STRCASESTR if you don't have strcasestr.1077GIT_CHECK_FUNC(strcasestr,1078[NO_STRCASESTR=],1079[NO_STRCASESTR=YesPlease])1080GIT_CONF_SUBST([NO_STRCASESTR])1081#1082# Define NO_MEMMEM if you don't have memmem.1083GIT_CHECK_FUNC(memmem,1084[NO_MEMMEM=],1085[NO_MEMMEM=YesPlease])1086GIT_CONF_SUBST([NO_MEMMEM])1087#1088# Define NO_STRLCPY if you don't have strlcpy.1089GIT_CHECK_FUNC(strlcpy,1090[NO_STRLCPY=],1091[NO_STRLCPY=YesPlease])1092GIT_CONF_SUBST([NO_STRLCPY])1093#1094# Define NO_UINTMAX_T if your platform does not have uintmax_t1095AC_CHECK_TYPE(uintmax_t,1096[NO_UINTMAX_T=],1097[NO_UINTMAX_T=YesPlease],[1098#include <inttypes.h>1099])1100GIT_CONF_SUBST([NO_UINTMAX_T])1101#1102# Define NO_STRTOUMAX if you don't have strtoumax in the C library.1103GIT_CHECK_FUNC(strtoumax,1104[NO_STRTOUMAX=],1105[NO_STRTOUMAX=YesPlease])1106GIT_CONF_SUBST([NO_STRTOUMAX])1107#1108# Define NO_SETENV if you don't have setenv in the C library.1109GIT_CHECK_FUNC(setenv,1110[NO_SETENV=],1111[NO_SETENV=YesPlease])1112GIT_CONF_SUBST([NO_SETENV])1113#1114# Define NO_UNSETENV if you don't have unsetenv in the C library.1115GIT_CHECK_FUNC(unsetenv,1116[NO_UNSETENV=],1117[NO_UNSETENV=YesPlease])1118GIT_CONF_SUBST([NO_UNSETENV])1119#1120# Define NO_MKDTEMP if you don't have mkdtemp in the C library.1121GIT_CHECK_FUNC(mkdtemp,1122[NO_MKDTEMP=],1123[NO_MKDTEMP=YesPlease])1124GIT_CONF_SUBST([NO_MKDTEMP])1125#1126# Define NO_INITGROUPS if you don't have initgroups in the C library.1127GIT_CHECK_FUNC(initgroups,1128[NO_INITGROUPS=],1129[NO_INITGROUPS=YesPlease])1130GIT_CONF_SUBST([NO_INITGROUPS])1131#1132# Define HAVE_GETDELIM if you have getdelim in the C library.1133GIT_CHECK_FUNC(getdelim,1134[HAVE_GETDELIM=YesPlease],1135[HAVE_GETDELIM=])1136GIT_CONF_SUBST([HAVE_GETDELIM])1137#1138#1139# Define NO_MMAP if you want to avoid mmap.1140#1141# Define NO_ICONV if your libc does not properly support iconv.11421143AC_DEFUN([BSD_SYSCTL_SRC], [1144AC_LANG_PROGRAM([[1145#include <stddef.h>1146#include <sys/types.h>1147#include <sys/sysctl.h>1148]],[[1149int val, mib[2];1150size_t len;1151mib[0] = CTL_HW;1152mib[1] = 1;1153len = sizeof(val);1154return sysctl(mib, 2, &val, &len, NULL, 0) ? 1 : 0;1155]])])11561157#1158# Define HAVE_BSD_SYSCTL=YesPlease if a BSD-compatible sysctl function is available.1159AC_MSG_CHECKING([for BSD sysctl])1160AC_COMPILE_IFELSE([BSD_SYSCTL_SRC],1161 [AC_MSG_RESULT([yes])1162 HAVE_BSD_SYSCTL=YesPlease],1163 [AC_MSG_RESULT([no])1164 HAVE_BSD_SYSCTL=])1165GIT_CONF_SUBST([HAVE_BSD_SYSCTL])11661167## Other checks.1168# Define USE_PIC if you need the main git objects to be built with -fPIC1169# in order to build and link perl/Git.so. x86-64 seems to need this.1170#1171# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.1172# Enable it on Windows. By default, symrefs are still used.1173#1174# Define NO_PTHREADS if we do not have pthreads.1175#1176# Define PTHREAD_LIBS to the linker flag used for Pthread support.1177AC_DEFUN([PTHREADTEST_SRC], [1178AC_LANG_PROGRAM([[1179#include <pthread.h>1180static void *noop(void *ignore) { return ignore; }1181]], [[1182 pthread_mutex_t test_mutex;1183 pthread_key_t test_key;1184 pthread_t th;1185 int retcode = 0;1186 void *ret = (void *)0;1187 retcode |= pthread_key_create(&test_key, (void *)0);1188 retcode |= pthread_mutex_init(&test_mutex,(void *)0);1189 retcode |= pthread_mutex_lock(&test_mutex);1190 retcode |= pthread_mutex_unlock(&test_mutex);1191 retcode |= pthread_create(&th, ret, noop, ret);1192 retcode |= pthread_join(th, &ret);1193 return retcode;1194]])])11951196dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(1197dnl [[#include <pthread.h>]],1198dnl [[pthread_mutex_t test_mutex;]]1199dnl )])12001201NO_PTHREADS=UnfortunatelyYes1202PTHREAD_LIBS=12031204if test -n "$USER_NOPTHREAD"; then1205 AC_MSG_NOTICE([Skipping POSIX Threads at user request.])1206# handle these separately since PTHREAD_CFLAGS could be '-lpthreads1207# -D_REENTRANT' or some such.1208elif test -z "$PTHREAD_CFLAGS"; then1209 threads_found=no1210 # Attempt to compile and link some code using pthreads to determine1211 # required linker flags. The order is somewhat important here: We1212 # first try it without any extra flags, to catch systems where1213 # pthreads are part of the C library, then go on testing various other1214 # flags. We do so to avoid false positives. For example, on Mac OS X1215 # pthreads are part of the C library; moreover, the compiler allows us1216 # to add "-mt" to the CFLAGS (although it will do nothing except1217 # trigger a warning about an unused flag). Hence if we checked for1218 # "-mt" before "" we would end up picking it. But unfortunately this1219 # would then trigger compiler warnings on every single file we compile.1220 for opt in "" -mt -pthread -lpthread; do1221 old_CFLAGS="$CFLAGS"1222 old_LIBS="$LIBS"1223 case "$opt" in1224 -l*) LIBS="$opt $LIBS" ;;1225 *) CFLAGS="$opt $CFLAGS" ;;1226 esac12271228 AC_MSG_CHECKING([for POSIX Threads with '$opt'])1229 AC_LINK_IFELSE([PTHREADTEST_SRC],1230 [AC_MSG_RESULT([yes])1231 NO_PTHREADS=1232 PTHREAD_LIBS="$opt"1233 PTHREAD_CFLAGS="$opt"1234 threads_found=yes1235 break1236 ],1237 [AC_MSG_RESULT([no])])1238 CFLAGS="$old_CFLAGS"1239 LIBS="$old_LIBS"1240 done1241 if test $threads_found != yes; then1242 AC_CHECK_LIB([pthread], [pthread_create],1243 [PTHREAD_LIBS="-lpthread"],1244 [NO_PTHREADS=UnfortunatelyYes])1245 fi1246else1247 old_CFLAGS="$CFLAGS"1248 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"1249 AC_MSG_CHECKING([for POSIX Threads with '$PTHREAD_CFLAGS'])1250 AC_LINK_IFELSE([PTHREADTEST_SRC],1251 [AC_MSG_RESULT([yes])1252 NO_PTHREADS=1253 PTHREAD_LIBS="$PTHREAD_CFLAGS"1254 ],1255 [AC_MSG_RESULT([no])])12561257 CFLAGS="$old_CFLAGS"1258fi12591260CFLAGS="$old_CFLAGS"12611262GIT_CONF_SUBST([PTHREAD_CFLAGS])1263GIT_CONF_SUBST([PTHREAD_LIBS])1264GIT_CONF_SUBST([NO_PTHREADS])12651266## Output files1267AC_CONFIG_FILES(["${config_file}":"${config_in}"])1268AC_OUTPUT