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 '$CSSMIN' to enable CSS minifying]) 229 GIT_CONF_SUBST([CSSMIN]) 230]) 231 232## Site configuration (override autodetection) 233## --with-PACKAGE[=ARG] and --without-PACKAGE 234AC_MSG_NOTICE([CHECKS for site configuration]) 235# 236# Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability 237# tests. These tests take up a significant amount of the total test time 238# but are not needed unless you plan to talk to SVN repos. 239# 240# Define PPC_SHA1 environment variable when running make to make use of 241# a bundled SHA1 routine optimized for PowerPC. 242# 243# Define NO_OPENSSL environment variable if you do not have OpenSSL. 244# This also implies BLK_SHA1. 245# 246# Define OPENSSLDIR=/foo/bar if your openssl header and library files are in 247# /foo/bar/include and /foo/bar/lib directories. 248AC_ARG_WITH(openssl, 249AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)]) 250AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]), 251GIT_PARSE_WITH([openssl])) 252 253# Define USE_LIBPCRE if you have and want to use libpcre. Various 254# commands such as log and grep offer runtime options to use 255# Perl-compatible regular expressions instead of standard or extended 256# POSIX regular expressions. 257# 258# Currently USE_LIBPCRE is a synonym for USE_LIBPCRE1, define 259# USE_LIBPCRE2 instead if you'd like to use version 2 of the PCRE 260# library. The USE_LIBPCRE flag will likely be changed to mean v2 by 261# default in future releases. 262# 263# Define LIBPCREDIR=/foo/bar if your PCRE header and library files are in 264# /foo/bar/include and /foo/bar/lib directories. 265# 266AC_ARG_WITH(libpcre, 267AS_HELP_STRING([--with-libpcre],[synonym for --with-libpcre1]), 268 if test "$withval" = "no"; then 269 USE_LIBPCRE1= 270 elif test "$withval" = "yes"; then 271 USE_LIBPCRE1=YesPlease 272 else 273 USE_LIBPCRE1=YesPlease 274 LIBPCREDIR=$withval 275 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR]) 276 dnl USE_LIBPCRE1 can still be modified below, so don't substitute 277 dnl it yet. 278 GIT_CONF_SUBST([LIBPCREDIR]) 279 fi) 280 281AC_ARG_WITH(libpcre1, 282AS_HELP_STRING([--with-libpcre1],[support Perl-compatible regexes via libpcre1 (default is NO)]) 283AS_HELP_STRING([], [ARG can be also prefix for libpcre library and headers]), 284 if test "$withval" = "no"; then 285 USE_LIBPCRE1= 286 elif test "$withval" = "yes"; then 287 USE_LIBPCRE1=YesPlease 288 else 289 USE_LIBPCRE1=YesPlease 290 LIBPCREDIR=$withval 291 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR]) 292 dnl USE_LIBPCRE1 can still be modified below, so don't substitute 293 dnl it yet. 294 GIT_CONF_SUBST([LIBPCREDIR]) 295 fi) 296 297AC_ARG_WITH(libpcre2, 298AS_HELP_STRING([--with-libpcre2],[support Perl-compatible regexes via libpcre2 (default is NO)]) 299AS_HELP_STRING([], [ARG can be also prefix for libpcre library and headers]), 300 if test -n "$USE_LIBPCRE1"; then 301 AC_MSG_ERROR([Only supply one of --with-libpcre1 or --with-libpcre2!]) 302 fi 303 304 if test "$withval" = "no"; then 305 USE_LIBPCRE2= 306 elif test "$withval" = "yes"; then 307 USE_LIBPCRE2=YesPlease 308 else 309 USE_LIBPCRE2=YesPlease 310 LIBPCREDIR=$withval 311 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR]) 312 dnl USE_LIBPCRE2 can still be modified below, so don't substitute 313 dnl it yet. 314 GIT_CONF_SUBST([LIBPCREDIR]) 315 fi) 316# 317# Define HAVE_ALLOCA_H if you have working alloca(3) defined in that header. 318AC_FUNC_ALLOCA 319case $ac_cv_working_alloca_h in 320 yes) HAVE_ALLOCA_H=YesPlease;; 321 *) HAVE_ALLOCA_H='';; 322esac 323GIT_CONF_SUBST([HAVE_ALLOCA_H]) 324# 325# Define NO_CURL if you do not have curl installed. git-http-pull and 326# git-http-push are not built, and you cannot use http:// and https:// 327# transports. 328# 329# Define CURLDIR=/foo/bar if your curl header and library files are in 330# /foo/bar/include and /foo/bar/lib directories. 331AC_ARG_WITH(curl, 332AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)]) 333AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]), 334GIT_PARSE_WITH(curl)) 335# 336# Define NO_EXPAT if you do not have expat installed. git-http-push is 337# not built, and you cannot push using http:// and https:// transports. 338# 339# Define EXPATDIR=/foo/bar if your expat header and library files are in 340# /foo/bar/include and /foo/bar/lib directories. 341AC_ARG_WITH(expat, 342AS_HELP_STRING([--with-expat], 343[support git-push using http:// and https:// transports via WebDAV (default is YES)]) 344AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]), 345GIT_PARSE_WITH(expat)) 346# 347# Define NO_FINK if you are building on Darwin/Mac OS X, have Fink 348# installed in /sw, but don't want GIT to link against any libraries 349# installed there. If defined you may specify your own (or Fink's) 350# include directories and library directories by defining CFLAGS 351# and LDFLAGS appropriately. 352# 353# Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X, 354# have DarwinPorts installed in /opt/local, but don't want GIT to 355# link against any libraries installed there. If defined you may 356# specify your own (or DarwinPort's) include directories and 357# library directories by defining CFLAGS and LDFLAGS appropriately. 358# 359# Define NO_MMAP if you want to avoid mmap. 360# 361# Define NO_ICONV if your libc does not properly support iconv. 362AC_ARG_WITH(iconv, 363AS_HELP_STRING([--without-iconv], 364[if your architecture doesn't properly support iconv]) 365AS_HELP_STRING([--with-iconv=PATH], 366[PATH is prefix for libiconv library and headers]) 367AS_HELP_STRING([], 368[used only if you need linking with libiconv]), 369GIT_PARSE_WITH(iconv)) 370 371## --enable-FEATURE[=ARG] and --disable-FEATURE 372# 373# Define USE_NSEC below if you want git to care about sub-second file mtimes 374# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and 375# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely 376# randomly break unless your underlying filesystem supports those sub-second 377# times (my ext3 doesn't). 378# 379# Define USE_STDEV below if you want git to care about the underlying device 380# change being considered an inode change from the update-index perspective. 381 382# 383# Allow user to set ETC_GITCONFIG variable 384GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG, 385 Use VALUE instead of /etc/gitconfig as the 386 global git configuration file. 387 If VALUE is not fully qualified it will be interpreted 388 as a path relative to the computed prefix at runtime.) 389 390# 391# Allow user to set ETC_GITATTRIBUTES variable 392GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES, 393 Use VALUE instead of /etc/gitattributes as the 394 global git attributes file. 395 If VALUE is not fully qualified it will be interpreted 396 as a path relative to the computed prefix at runtime.) 397 398# 399# Allow user to set the default pager 400GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER, 401 Use VALUE as the fall-back pager instead of 'less'. 402 This is used by things like 'git log' when the user 403 does not specify a pager to use through alternate 404 methods. eg: /usr/bin/pager) 405# 406# Allow user to set the default editor 407GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR, 408 Use VALUE as the fall-back editor instead of 'vi'. 409 This is used by things like 'git commit' when the user 410 does not specify a preferred editor through other 411 methods. eg: /usr/bin/editor) 412 413# 414# Define SHELL_PATH to provide path to shell. 415GIT_ARG_SET_PATH(shell) 416# 417# Define PERL_PATH to provide path to Perl. 418GIT_ARG_SET_PATH(perl) 419# 420# Define PYTHON_PATH to provide path to Python. 421GIT_ARG_SET_PATH(python, allow-without) 422# 423# Define ZLIB_PATH to provide path to zlib. 424GIT_ARG_SET_PATH(zlib) 425# 426# Declare the with-tcltk/without-tcltk options. 427AC_ARG_WITH(tcltk, 428AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)]) 429AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.]) 430AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if]) 431AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]), 432GIT_PARSE_WITH(tcltk)) 433# 434 435 436## Checks for programs. 437AC_MSG_NOTICE([CHECKS for programs]) 438# 439AC_PROG_CC([cc gcc]) 440AC_C_INLINE 441case $ac_cv_c_inline in 442 inline | yes | no) INLINE='';; 443 *) INLINE=$ac_cv_c_inline ;; 444esac 445GIT_CONF_SUBST([INLINE]) 446 447# which switch to pass runtime path to dynamic libraries to the linker 448AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [ 449 SAVE_LDFLAGS="${LDFLAGS}" 450 LDFLAGS="${SAVE_LDFLAGS} -R /" 451 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no]) 452 LDFLAGS="${SAVE_LDFLAGS}" 453]) 454if test "$git_cv_ld_dashr" = "yes"; then 455 CC_LD_DYNPATH=-R 456else 457 AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [ 458 SAVE_LDFLAGS="${LDFLAGS}" 459 LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/" 460 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no]) 461 LDFLAGS="${SAVE_LDFLAGS}" 462 ]) 463 if test "$git_cv_ld_wl_rpath" = "yes"; then 464 CC_LD_DYNPATH=-Wl,-rpath, 465 else 466 AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [ 467 SAVE_LDFLAGS="${LDFLAGS}" 468 LDFLAGS="${SAVE_LDFLAGS} -rpath /" 469 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no]) 470 LDFLAGS="${SAVE_LDFLAGS}" 471 ]) 472 if test "$git_cv_ld_rpath" = "yes"; then 473 CC_LD_DYNPATH=-rpath 474 else 475 CC_LD_DYNPATH= 476 AC_MSG_WARN([linker does not support runtime path to dynamic libraries]) 477 fi 478 fi 479fi 480GIT_CONF_SUBST([CC_LD_DYNPATH]) 481#AC_PROG_INSTALL # needs install-sh or install.sh in sources 482AC_CHECK_TOOLS(AR, [gar ar], :) 483AC_CHECK_PROGS(TAR, [gtar tar]) 484AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff]) 485# TCLTK_PATH will be set to some value if we want Tcl/Tk 486# or will be empty otherwise. 487if test -n "$NO_TCLTK"; then 488 TCLTK_PATH= 489else 490 if test "$with_tcltk" = ""; then 491 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'. 492 TCLTK_PATH=wish 493 elif test "$with_tcltk" = "yes"; then 494 # Tcl/Tk check requested. 495 AC_CHECK_PROGS(TCLTK_PATH, [wish], ) 496 else 497 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk]) 498 TCLTK_PATH="$with_tcltk" 499 fi 500fi 501GIT_CONF_SUBST([TCLTK_PATH]) 502AC_CHECK_PROGS(ASCIIDOC, [asciidoc]) 503if test -n "$ASCIIDOC"; then 504 AC_MSG_CHECKING([for asciidoc version]) 505 asciidoc_version=`$ASCIIDOC --version 2>/dev/null` 506 case "${asciidoc_version}" in 507 asciidoc' '8*) 508 AC_MSG_RESULT([${asciidoc_version}]) 509 ;; 510 *) 511 AC_MSG_RESULT([${asciidoc_version} (unknown)]) 512 ;; 513 esac 514fi 515 516if grep -a ascii configure.ac >/dev/null; then 517 AC_MSG_RESULT([Using 'grep -a' for sane_grep]) 518 SANE_TEXT_GREP=-a 519else 520 SANE_TEXT_GREP= 521fi 522GIT_CONF_SUBST([SANE_TEXT_GREP]) 523 524## Checks for libraries. 525AC_MSG_NOTICE([CHECKS for libraries]) 526# 527# Define NO_OPENSSL environment variable if you do not have OpenSSL. 528# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin). 529 530GIT_STASH_FLAGS($OPENSSLDIR) 531 532AC_CHECK_LIB([crypto], [SHA1_Init], 533[NEEDS_SSL_WITH_CRYPTO=], 534[AC_CHECK_LIB([ssl], [SHA1_Init], 535 [NEEDS_SSL_WITH_CRYPTO=YesPlease NO_OPENSSL=], 536 [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])]) 537 538GIT_UNSTASH_FLAGS($OPENSSLDIR) 539 540GIT_CONF_SUBST([NEEDS_SSL_WITH_CRYPTO]) 541GIT_CONF_SUBST([NO_OPENSSL]) 542 543# 544# Handle the USE_LIBPCRE1 and USE_LIBPCRE2 options potentially set 545# above. 546# 547 548if test -n "$USE_LIBPCRE1"; then 549 550GIT_STASH_FLAGS($LIBPCREDIR) 551 552AC_CHECK_LIB([pcre], [pcre_version], 553[USE_LIBPCRE=YesPlease], 554[USE_LIBPCRE=]) 555 556GIT_UNSTASH_FLAGS($LIBPCREDIR) 557 558GIT_CONF_SUBST([USE_LIBPCRE1]) 559 560fi 561 562 563if test -n "$USE_LIBPCRE2"; then 564 565GIT_STASH_FLAGS($LIBPCREDIR) 566 567AC_CHECK_LIB([pcre2-8], [pcre2_config_8], 568[USE_LIBPCRE2=YesPlease], 569[USE_LIBPCRE2=]) 570 571GIT_UNSTASH_FLAGS($LIBPCREDIR) 572 573GIT_CONF_SUBST([USE_LIBPCRE2]) 574 575fi 576 577# 578# Define NO_CURL if you do not have libcurl installed. git-http-pull and 579# git-http-push are not built, and you cannot use http:// and https:// 580# transports. 581 582GIT_STASH_FLAGS($CURLDIR) 583 584AC_CHECK_LIB([curl], [curl_global_init], 585[NO_CURL=], 586[NO_CURL=YesPlease]) 587 588GIT_UNSTASH_FLAGS($CURLDIR) 589 590GIT_CONF_SUBST([NO_CURL]) 591 592if test -z "$NO_CURL"; then 593 594AC_CHECK_PROG([CURL_CONFIG], [curl-config], 595[curl-config], 596[no]) 597 598if test $CURL_CONFIG != no; then 599 GIT_CONF_SUBST([CURL_CONFIG]) 600 if test -z "${NO_OPENSSL}"; then 601 AC_MSG_CHECKING([if Curl supports SSL]) 602 if test $(curl-config --features|grep SSL) = SSL; then 603 NEEDS_SSL_WITH_CURL=YesPlease 604 AC_MSG_RESULT([yes]) 605 else 606 NEEDS_SSL_WITH_CURL= 607 AC_MSG_RESULT([no]) 608 fi 609 GIT_CONF_SUBST([NEEDS_SSL_WITH_CURL]) 610 fi 611fi 612 613fi 614 615 616# 617# Define NO_EXPAT if you do not have expat installed. git-http-push is 618# not built, and you cannot push using http:// and https:// transports. 619 620GIT_STASH_FLAGS($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_CHECK_LIB([c], [gettext], 767[LIBC_CONTAINS_LIBINTL=YesPlease], 768[LIBC_CONTAINS_LIBINTL=]) 769GIT_CONF_SUBST([LIBC_CONTAINS_LIBINTL]) 770 771# 772# Define NO_GETTEXT if you don't want Git output to be translated. 773# A translated Git requires GNU libintl or another gettext implementation 774AC_CHECK_HEADER([libintl.h], 775[NO_GETTEXT=], 776[NO_GETTEXT=YesPlease]) 777GIT_CONF_SUBST([NO_GETTEXT]) 778 779if test -z "$NO_GETTEXT"; then 780 test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl" 781fi 782 783## Checks for header files. 784AC_MSG_NOTICE([CHECKS for header files]) 785# 786# Define NO_SYS_SELECT_H if you don't have sys/select.h. 787AC_CHECK_HEADER([sys/select.h], 788[NO_SYS_SELECT_H=], 789[NO_SYS_SELECT_H=UnfortunatelyYes]) 790GIT_CONF_SUBST([NO_SYS_SELECT_H]) 791# 792# Define NO_SYS_POLL_H if you don't have sys/poll.h 793AC_CHECK_HEADER([sys/poll.h], 794[NO_SYS_POLL_H=], 795[NO_SYS_POLL_H=UnfortunatelyYes]) 796GIT_CONF_SUBST([NO_SYS_POLL_H]) 797# 798# Define NO_INTTYPES_H if you don't have inttypes.h 799AC_CHECK_HEADER([inttypes.h], 800[NO_INTTYPES_H=], 801[NO_INTTYPES_H=UnfortunatelyYes]) 802GIT_CONF_SUBST([NO_INTTYPES_H]) 803# 804# Define OLD_ICONV if your library has an old iconv(), where the second 805# (input buffer pointer) parameter is declared with type (const char **). 806AC_DEFUN([OLDICONVTEST_SRC], [ 807AC_LANG_PROGRAM([[ 808#include <iconv.h> 809 810extern size_t iconv(iconv_t cd, 811 char **inbuf, size_t *inbytesleft, 812 char **outbuf, size_t *outbytesleft); 813]], [])]) 814 815GIT_STASH_FLAGS($ICONVDIR) 816 817AC_MSG_CHECKING([for old iconv()]) 818AC_COMPILE_IFELSE([OLDICONVTEST_SRC], 819 [AC_MSG_RESULT([no])], 820 [AC_MSG_RESULT([yes]) 821 OLD_ICONV=UnfortunatelyYes]) 822 823GIT_UNSTASH_FLAGS($ICONVDIR) 824 825GIT_CONF_SUBST([OLD_ICONV]) 826 827## Checks for typedefs, structures, and compiler characteristics. 828AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics]) 829# 830TYPE_SOCKLEN_T 831case $ac_cv_type_socklen_t in 832 yes) SOCKLEN_T='';; 833 *) SOCKLEN_T=$git_cv_socklen_t_equiv;; 834esac 835GIT_CONF_SUBST([SOCKLEN_T]) 836 837# 838# Define NO_STRUCT_ITIMERVAL if you don't have struct itimerval. 839AC_CHECK_TYPES([struct itimerval], 840[NO_STRUCT_ITIMERVAL=], 841[NO_STRUCT_ITIMERVAL=UnfortunatelyYes], 842[#include <sys/time.h>]) 843GIT_CONF_SUBST([NO_STRUCT_ITIMERVAL]) 844# 845# Define USE_ST_TIMESPEC=YesPlease when stat.st_mtimespec.tv_nsec exists. 846# Define NO_NSEC=YesPlease when neither stat.st_mtim.tv_nsec nor 847# stat.st_mtimespec.tv_nsec exists. 848AC_CHECK_MEMBER([struct stat.st_mtimespec.tv_nsec]) 849AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec]) 850if test x$ac_cv_member_struct_stat_st_mtimespec_tv_nsec = xyes; then 851 USE_ST_TIMESPEC=YesPlease 852 GIT_CONF_SUBST([USE_ST_TIMESPEC]) 853elif test x$ac_cv_member_struct_stat_st_mtim_tv_nsec != xyes; then 854 NO_NSEC=YesPlease 855 GIT_CONF_SUBST([NO_NSEC]) 856fi 857# 858# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks 859# d_type in struct dirent (latest Cygwin -- will be fixed soonish). 860AC_CHECK_MEMBER(struct dirent.d_type, 861[NO_D_TYPE_IN_DIRENT=], 862[NO_D_TYPE_IN_DIRENT=YesPlease], 863[#include <dirent.h>]) 864GIT_CONF_SUBST([NO_D_TYPE_IN_DIRENT]) 865# 866# Define NO_GECOS_IN_PWENT if you don't have pw_gecos in struct passwd 867# in the C library. 868AC_CHECK_MEMBER(struct passwd.pw_gecos, 869[NO_GECOS_IN_PWENT=], 870[NO_GECOS_IN_PWENT=YesPlease], 871[#include <pwd.h>]) 872GIT_CONF_SUBST([NO_GECOS_IN_PWENT]) 873# 874# Define NO_SOCKADDR_STORAGE if your platform does not have struct 875# sockaddr_storage. 876AC_CHECK_TYPE(struct sockaddr_storage, 877[NO_SOCKADDR_STORAGE=], 878[NO_SOCKADDR_STORAGE=YesPlease],[ 879#include <sys/types.h> 880#include <sys/socket.h> 881]) 882GIT_CONF_SUBST([NO_SOCKADDR_STORAGE]) 883# 884# Define NO_IPV6 if you lack IPv6 support and getaddrinfo(). 885AC_CHECK_TYPE([struct addrinfo],[ 886 GIT_CHECK_FUNC([getaddrinfo], 887 [NO_IPV6=], 888 [NO_IPV6=YesPlease]) 889],[NO_IPV6=YesPlease],[ 890#include <sys/types.h> 891#include <sys/socket.h> 892#include <netdb.h> 893]) 894GIT_CONF_SUBST([NO_IPV6]) 895# 896# Define NO_REGEX if your C library lacks regex support with REG_STARTEND 897# feature. 898AC_CACHE_CHECK([whether the platform regex supports REG_STARTEND], 899 [ac_cv_c_regex_with_reg_startend], [ 900AC_EGREP_CPP(yippeeyeswehaveit, 901 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT 902#include <regex.h> 903], 904[#ifdef REG_STARTEND 905yippeeyeswehaveit 906#endif 907]), 908 [ac_cv_c_regex_with_reg_startend=yes], 909 [ac_cv_c_regex_with_reg_startend=no]) 910]) 911if test $ac_cv_c_regex_with_reg_startend = yes; then 912 NO_REGEX= 913else 914 NO_REGEX=YesPlease 915fi 916GIT_CONF_SUBST([NO_REGEX]) 917# 918# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds 919# when attempting to read from an fopen'ed directory. 920AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory], 921 [ac_cv_fread_reads_directories], 922[ 923AC_RUN_IFELSE( 924 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], 925 [[ 926 FILE *f = fopen(".", "r"); 927 return f)]])], 928 [ac_cv_fread_reads_directories=no], 929 [ac_cv_fread_reads_directories=yes]) 930]) 931if test $ac_cv_fread_reads_directories = yes; then 932 FREAD_READS_DIRECTORIES=UnfortunatelyYes 933else 934 FREAD_READS_DIRECTORIES= 935fi 936GIT_CONF_SUBST([FREAD_READS_DIRECTORIES]) 937# 938# Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf() 939# or vsnprintf() return -1 instead of number of characters which would 940# have been written to the final string if enough space had been available. 941AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value], 942 [ac_cv_snprintf_returns_bogus], 943[ 944AC_RUN_IFELSE( 945 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT 946 #include "stdarg.h" 947 948 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...) 949 { 950 int ret; 951 va_list ap; 952 va_start(ap, format); 953 ret = vsnprintf(str, maxsize, format, ap); 954 va_end(ap); 955 return ret; 956 }], 957 [[char buf[6]; 958 if (test_vsnprintf(buf, 3, "%s", "12345") != 5 959 || strcmp(buf, "12")) return 1; 960 if (snprintf(buf, 3, "%s", "12345") != 5 961 || strcmp(buf, "12")) return 1]])], 962 [ac_cv_snprintf_returns_bogus=no], 963 [ac_cv_snprintf_returns_bogus=yes]) 964]) 965if test $ac_cv_snprintf_returns_bogus = yes; then 966 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes 967else 968 SNPRINTF_RETURNS_BOGUS= 969fi 970GIT_CONF_SUBST([SNPRINTF_RETURNS_BOGUS]) 971# 972# Define NEEDS_MODE_TRANSLATION if your OS strays from the typical file type 973# bits in mode values. 974AC_CACHE_CHECK([whether the platform uses typical file type bits], 975 [ac_cv_sane_mode_bits], [ 976AC_EGREP_CPP(yippeeyeswehaveit, 977 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], 978[#if S_IFMT == 0170000 && \ 979 S_IFREG == 0100000 && S_IFDIR == 0040000 && S_IFLNK == 0120000 && \ 980 S_IFBLK == 0060000 && S_IFCHR == 0020000 && \ 981 S_IFIFO == 0010000 && S_IFSOCK == 0140000 982yippeeyeswehaveit 983#endif 984]), 985 [ac_cv_sane_mode_bits=yes], 986 [ac_cv_sane_mode_bits=no]) 987]) 988if test $ac_cv_sane_mode_bits = yes; then 989 NEEDS_MODE_TRANSLATION= 990else 991 NEEDS_MODE_TRANSLATION=UnfortunatelyYes 992fi 993GIT_CONF_SUBST([NEEDS_MODE_TRANSLATION]) 994 995 996## Checks for library functions. 997## (in default C library and libraries checked by AC_CHECK_LIB) 998AC_MSG_NOTICE([CHECKS for library functions]) 999#1000# Define NO_LIBGEN_H if you don't have libgen.h.1001AC_CHECK_HEADER([libgen.h],1002[NO_LIBGEN_H=],1003[NO_LIBGEN_H=YesPlease])1004GIT_CONF_SUBST([NO_LIBGEN_H])1005#1006# Define HAVE_PATHS_H if you have paths.h.1007AC_CHECK_HEADER([paths.h],1008[HAVE_PATHS_H=YesPlease],1009[HAVE_PATHS_H=])1010GIT_CONF_SUBST([HAVE_PATHS_H])1011#1012# Define HAVE_LIBCHARSET_H if have libcharset.h1013AC_CHECK_HEADER([libcharset.h],1014[HAVE_LIBCHARSET_H=YesPlease],1015[HAVE_LIBCHARSET_H=])1016GIT_CONF_SUBST([HAVE_LIBCHARSET_H])1017#1018# Define HAVE_STRINGS_H if you have strings.h1019AC_CHECK_HEADER([strings.h],1020[HAVE_STRINGS_H=YesPlease],1021[HAVE_STRINGS_H=])1022GIT_CONF_SUBST([HAVE_STRINGS_H])1023# Define CHARSET_LIB if libiconv does not export the locale_charset symbol1024# and libcharset does1025CHARSET_LIB=1026AC_CHECK_LIB([iconv], [locale_charset],1027 [CHARSET_LIB=-liconv],1028 [AC_CHECK_LIB([charset], [locale_charset],1029 [CHARSET_LIB=-lcharset])])1030GIT_CONF_SUBST([CHARSET_LIB])1031#1032# Define HAVE_CLOCK_GETTIME=YesPlease if clock_gettime is available.1033GIT_CHECK_FUNC(clock_gettime,1034 [HAVE_CLOCK_GETTIME=YesPlease],1035 [HAVE_CLOCK_GETTIME=])1036GIT_CONF_SUBST([HAVE_CLOCK_GETTIME])10371038AC_DEFUN([CLOCK_MONOTONIC_SRC], [1039AC_LANG_PROGRAM([[1040#include <time.h>1041clockid_t id = CLOCK_MONOTONIC;1042]])])10431044#1045# Define HAVE_CLOCK_MONOTONIC=YesPlease if CLOCK_MONOTONIC is available.1046AC_MSG_CHECKING([for CLOCK_MONOTONIC])1047AC_COMPILE_IFELSE([CLOCK_MONOTONIC_SRC],1048 [AC_MSG_RESULT([yes])1049 HAVE_CLOCK_MONOTONIC=YesPlease],1050 [AC_MSG_RESULT([no])1051 HAVE_CLOCK_MONOTONIC=])1052GIT_CONF_SUBST([HAVE_CLOCK_MONOTONIC])1053#1054# Define NO_SETITIMER if you don't have setitimer.1055GIT_CHECK_FUNC(setitimer,1056[NO_SETITIMER=],1057[NO_SETITIMER=YesPlease])1058GIT_CONF_SUBST([NO_SETITIMER])1059#1060# Define NO_STRCASESTR if you don't have strcasestr.1061GIT_CHECK_FUNC(strcasestr,1062[NO_STRCASESTR=],1063[NO_STRCASESTR=YesPlease])1064GIT_CONF_SUBST([NO_STRCASESTR])1065#1066# Define NO_MEMMEM if you don't have memmem.1067GIT_CHECK_FUNC(memmem,1068[NO_MEMMEM=],1069[NO_MEMMEM=YesPlease])1070GIT_CONF_SUBST([NO_MEMMEM])1071#1072# Define NO_STRLCPY if you don't have strlcpy.1073GIT_CHECK_FUNC(strlcpy,1074[NO_STRLCPY=],1075[NO_STRLCPY=YesPlease])1076GIT_CONF_SUBST([NO_STRLCPY])1077#1078# Define NO_UINTMAX_T if your platform does not have uintmax_t1079AC_CHECK_TYPE(uintmax_t,1080[NO_UINTMAX_T=],1081[NO_UINTMAX_T=YesPlease],[1082#include <inttypes.h>1083])1084GIT_CONF_SUBST([NO_UINTMAX_T])1085#1086# Define NO_STRTOUMAX if you don't have strtoumax in the C library.1087GIT_CHECK_FUNC(strtoumax,1088[NO_STRTOUMAX=],1089[NO_STRTOUMAX=YesPlease])1090GIT_CONF_SUBST([NO_STRTOUMAX])1091#1092# Define NO_SETENV if you don't have setenv in the C library.1093GIT_CHECK_FUNC(setenv,1094[NO_SETENV=],1095[NO_SETENV=YesPlease])1096GIT_CONF_SUBST([NO_SETENV])1097#1098# Define NO_UNSETENV if you don't have unsetenv in the C library.1099GIT_CHECK_FUNC(unsetenv,1100[NO_UNSETENV=],1101[NO_UNSETENV=YesPlease])1102GIT_CONF_SUBST([NO_UNSETENV])1103#1104# Define NO_MKDTEMP if you don't have mkdtemp in the C library.1105GIT_CHECK_FUNC(mkdtemp,1106[NO_MKDTEMP=],1107[NO_MKDTEMP=YesPlease])1108GIT_CONF_SUBST([NO_MKDTEMP])1109#1110# Define NO_INITGROUPS if you don't have initgroups in the C library.1111GIT_CHECK_FUNC(initgroups,1112[NO_INITGROUPS=],1113[NO_INITGROUPS=YesPlease])1114GIT_CONF_SUBST([NO_INITGROUPS])1115#1116# Define HAVE_GETDELIM if you have getdelim in the C library.1117GIT_CHECK_FUNC(getdelim,1118[HAVE_GETDELIM=YesPlease],1119[HAVE_GETDELIM=])1120GIT_CONF_SUBST([HAVE_GETDELIM])1121#1122#1123# Define NO_MMAP if you want to avoid mmap.1124#1125# Define NO_ICONV if your libc does not properly support iconv.11261127AC_DEFUN([BSD_SYSCTL_SRC], [1128AC_LANG_PROGRAM([[1129#include <stddef.h>1130#include <sys/types.h>1131#include <sys/sysctl.h>1132]],[[1133int val, mib[2];1134size_t len;1135mib[0] = CTL_HW;1136mib[1] = 1;1137len = sizeof(val);1138return sysctl(mib, 2, &val, &len, NULL, 0) ? 1 : 0;1139]])])11401141#1142# Define HAVE_BSD_SYSCTL=YesPlease if a BSD-compatible sysctl function is available.1143AC_MSG_CHECKING([for BSD sysctl])1144AC_COMPILE_IFELSE([BSD_SYSCTL_SRC],1145 [AC_MSG_RESULT([yes])1146 HAVE_BSD_SYSCTL=YesPlease],1147 [AC_MSG_RESULT([no])1148 HAVE_BSD_SYSCTL=])1149GIT_CONF_SUBST([HAVE_BSD_SYSCTL])11501151## Other checks.1152# Define USE_PIC if you need the main git objects to be built with -fPIC1153# in order to build and link perl/Git.so. x86-64 seems to need this.1154#1155# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.1156# Enable it on Windows. By default, symrefs are still used.1157#1158# Define NO_PTHREADS if we do not have pthreads.1159#1160# Define PTHREAD_LIBS to the linker flag used for Pthread support.1161AC_DEFUN([PTHREADTEST_SRC], [1162AC_LANG_PROGRAM([[1163#include <pthread.h>1164static void *noop(void *ignore) { return ignore; }1165]], [[1166 pthread_mutex_t test_mutex;1167 pthread_key_t test_key;1168 pthread_t th;1169 int retcode = 0;1170 void *ret = (void *)0;1171 retcode |= pthread_key_create(&test_key, (void *)0);1172 retcode |= pthread_mutex_init(&test_mutex,(void *)0);1173 retcode |= pthread_mutex_lock(&test_mutex);1174 retcode |= pthread_mutex_unlock(&test_mutex);1175 retcode |= pthread_create(&th, ret, noop, ret);1176 retcode |= pthread_join(th, &ret);1177 return retcode;1178]])])11791180dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(1181dnl [[#include <pthread.h>]],1182dnl [[pthread_mutex_t test_mutex;]]1183dnl )])11841185NO_PTHREADS=UnfortunatelyYes1186PTHREAD_LIBS=11871188if test -n "$USER_NOPTHREAD"; then1189 AC_MSG_NOTICE([Skipping POSIX Threads at user request.])1190# handle these separately since PTHREAD_CFLAGS could be '-lpthreads1191# -D_REENTRANT' or some such.1192elif test -z "$PTHREAD_CFLAGS"; then1193 threads_found=no1194 # Attempt to compile and link some code using pthreads to determine1195 # required linker flags. The order is somewhat important here: We1196 # first try it without any extra flags, to catch systems where1197 # pthreads are part of the C library, then go on testing various other1198 # flags. We do so to avoid false positives. For example, on Mac OS X1199 # pthreads are part of the C library; moreover, the compiler allows us1200 # to add "-mt" to the CFLAGS (although it will do nothing except1201 # trigger a warning about an unused flag). Hence if we checked for1202 # "-mt" before "" we would end up picking it. But unfortunately this1203 # would then trigger compiler warnings on every single file we compile.1204 for opt in "" -mt -pthread -lpthread; do1205 old_CFLAGS="$CFLAGS"1206 old_LIBS="$LIBS"1207 case "$opt" in1208 -l*) LIBS="$opt $LIBS" ;;1209 *) CFLAGS="$opt $CFLAGS" ;;1210 esac12111212 AC_MSG_CHECKING([for POSIX Threads with '$opt'])1213 AC_LINK_IFELSE([PTHREADTEST_SRC],1214 [AC_MSG_RESULT([yes])1215 NO_PTHREADS=1216 PTHREAD_LIBS="$opt"1217 PTHREAD_CFLAGS="$opt"1218 threads_found=yes1219 break1220 ],1221 [AC_MSG_RESULT([no])])1222 CFLAGS="$old_CFLAGS"1223 LIBS="$old_LIBS"1224 done1225 if test $threads_found != yes; then1226 AC_CHECK_LIB([pthread], [pthread_create],1227 [PTHREAD_LIBS="-lpthread"],1228 [NO_PTHREADS=UnfortunatelyYes])1229 fi1230else1231 old_CFLAGS="$CFLAGS"1232 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"1233 AC_MSG_CHECKING([for POSIX Threads with '$PTHREAD_CFLAGS'])1234 AC_LINK_IFELSE([PTHREADTEST_SRC],1235 [AC_MSG_RESULT([yes])1236 NO_PTHREADS=1237 PTHREAD_LIBS="$PTHREAD_CFLAGS"1238 ],1239 [AC_MSG_RESULT([no])])12401241 CFLAGS="$old_CFLAGS"1242fi12431244CFLAGS="$old_CFLAGS"12451246GIT_CONF_SUBST([PTHREAD_CFLAGS])1247GIT_CONF_SUBST([PTHREAD_LIBS])1248GIT_CONF_SUBST([NO_PTHREADS])12491250## Output files1251AC_CONFIG_FILES(["${config_file}":"${config_in}"])1252AC_OUTPUT