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 '$CSSMIN' to enable CSS minifying]) 229 GIT_CONF_SUBST([CSSMIN]) 230]) 231 232## Site configuration (override autodetection) 233## --with-PACKAGE[=ARG] and --without-PACKAGE 234AC_MSG_NOTICE([CHECKS for site configuration]) 235# 236# Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability 237# tests. These tests take up a significant amount of the total test time 238# but are not needed unless you plan to talk to SVN repos. 239# 240# Define PPC_SHA1 environment variable when running make to make use of 241# a bundled SHA1 routine optimized for PowerPC. 242# 243# Define NO_OPENSSL environment variable if you do not have OpenSSL. 244# This also implies BLK_SHA1. 245# 246# Define OPENSSLDIR=/foo/bar if your openssl header and library files are in 247# /foo/bar/include and /foo/bar/lib directories. 248AC_ARG_WITH(openssl, 249AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)]) 250AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]), 251GIT_PARSE_WITH([openssl])) 252 253# Define USE_LIBPCRE if you have and want to use libpcre. git-grep will be 254# able to use Perl-compatible regular expressions. 255# 256# Define LIBPCREDIR=/foo/bar if your libpcre header and library files are in 257# /foo/bar/include and /foo/bar/lib directories. 258# 259AC_ARG_WITH(libpcre, 260AS_HELP_STRING([--with-libpcre],[support Perl-compatible regexes (default is NO)]) 261AS_HELP_STRING([], [ARG can be also prefix for libpcre library and headers]), 262 if test "$withval" = "no"; then 263 USE_LIBPCRE= 264 elif test "$withval" = "yes"; then 265 USE_LIBPCRE=YesPlease 266 else 267 USE_LIBPCRE=YesPlease 268 LIBPCREDIR=$withval 269 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR]) 270 dnl USE_LIBPCRE can still be modified below, so don't substitute 271 dnl it yet. 272 GIT_CONF_SUBST([LIBPCREDIR]) 273 fi) 274# 275# Define HAVE_ALLOCA_H if you have working alloca(3) defined in that header. 276AC_FUNC_ALLOCA 277case $ac_cv_working_alloca_h in 278 yes) HAVE_ALLOCA_H=YesPlease;; 279 *) HAVE_ALLOCA_H='';; 280esac 281GIT_CONF_SUBST([HAVE_ALLOCA_H]) 282# 283# Define NO_CURL if you do not have curl installed. git-http-pull and 284# git-http-push are not built, and you cannot use http:// and https:// 285# transports. 286# 287# Define CURLDIR=/foo/bar if your curl header and library files are in 288# /foo/bar/include and /foo/bar/lib directories. 289AC_ARG_WITH(curl, 290AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)]) 291AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]), 292GIT_PARSE_WITH(curl)) 293# 294# Define NO_EXPAT if you do not have expat installed. git-http-push is 295# not built, and you cannot push using http:// and https:// transports. 296# 297# Define EXPATDIR=/foo/bar if your expat header and library files are in 298# /foo/bar/include and /foo/bar/lib directories. 299AC_ARG_WITH(expat, 300AS_HELP_STRING([--with-expat], 301[support git-push using http:// and https:// transports via WebDAV (default is YES)]) 302AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]), 303GIT_PARSE_WITH(expat)) 304# 305# Define NO_FINK if you are building on Darwin/Mac OS X, have Fink 306# installed in /sw, but don't want GIT to link against any libraries 307# installed there. If defined you may specify your own (or Fink's) 308# include directories and library directories by defining CFLAGS 309# and LDFLAGS appropriately. 310# 311# Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X, 312# have DarwinPorts installed in /opt/local, but don't want GIT to 313# link against any libraries installed there. If defined you may 314# specify your own (or DarwinPort's) include directories and 315# library directories by defining CFLAGS and LDFLAGS appropriately. 316# 317# Define NO_MMAP if you want to avoid mmap. 318# 319# Define NO_ICONV if your libc does not properly support iconv. 320AC_ARG_WITH(iconv, 321AS_HELP_STRING([--without-iconv], 322[if your architecture doesn't properly support iconv]) 323AS_HELP_STRING([--with-iconv=PATH], 324[PATH is prefix for libiconv library and headers]) 325AS_HELP_STRING([], 326[used only if you need linking with libiconv]), 327GIT_PARSE_WITH(iconv)) 328 329## --enable-FEATURE[=ARG] and --disable-FEATURE 330# 331# Define USE_NSEC below if you want git to care about sub-second file mtimes 332# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and 333# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely 334# randomly break unless your underlying filesystem supports those sub-second 335# times (my ext3 doesn't). 336# 337# Define USE_STDEV below if you want git to care about the underlying device 338# change being considered an inode change from the update-index perspective. 339 340# 341# Allow user to set ETC_GITCONFIG variable 342GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG, 343 Use VALUE instead of /etc/gitconfig as the 344 global git configuration file. 345 If VALUE is not fully qualified it will be interpreted 346 as a path relative to the computed prefix at runtime.) 347 348# 349# Allow user to set ETC_GITATTRIBUTES variable 350GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES, 351 Use VALUE instead of /etc/gitattributes as the 352 global git attributes file. 353 If VALUE is not fully qualified it will be interpreted 354 as a path relative to the computed prefix at runtime.) 355 356# 357# Allow user to set the default pager 358GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER, 359 Use VALUE as the fall-back pager instead of 'less'. 360 This is used by things like 'git log' when the user 361 does not specify a pager to use through alternate 362 methods. eg: /usr/bin/pager) 363# 364# Allow user to set the default editor 365GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR, 366 Use VALUE as the fall-back editor instead of 'vi'. 367 This is used by things like 'git commit' when the user 368 does not specify a preferred editor through other 369 methods. eg: /usr/bin/editor) 370 371# 372# Define SHELL_PATH to provide path to shell. 373GIT_ARG_SET_PATH(shell) 374# 375# Define PERL_PATH to provide path to Perl. 376GIT_ARG_SET_PATH(perl) 377# 378# Define PYTHON_PATH to provide path to Python. 379GIT_ARG_SET_PATH(python, allow-without) 380# 381# Define ZLIB_PATH to provide path to zlib. 382GIT_ARG_SET_PATH(zlib) 383# 384# Declare the with-tcltk/without-tcltk options. 385AC_ARG_WITH(tcltk, 386AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)]) 387AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.]) 388AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if]) 389AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]), 390GIT_PARSE_WITH(tcltk)) 391# 392 393 394## Checks for programs. 395AC_MSG_NOTICE([CHECKS for programs]) 396# 397AC_PROG_CC([cc gcc]) 398AC_C_INLINE 399case $ac_cv_c_inline in 400 inline | yes | no) INLINE='';; 401 *) INLINE=$ac_cv_c_inline ;; 402esac 403GIT_CONF_SUBST([INLINE]) 404 405# which switch to pass runtime path to dynamic libraries to the linker 406AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [ 407 SAVE_LDFLAGS="${LDFLAGS}" 408 LDFLAGS="${SAVE_LDFLAGS} -R /" 409 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no]) 410 LDFLAGS="${SAVE_LDFLAGS}" 411]) 412if test "$git_cv_ld_dashr" = "yes"; then 413 CC_LD_DYNPATH=-R 414else 415 AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [ 416 SAVE_LDFLAGS="${LDFLAGS}" 417 LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/" 418 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no]) 419 LDFLAGS="${SAVE_LDFLAGS}" 420 ]) 421 if test "$git_cv_ld_wl_rpath" = "yes"; then 422 CC_LD_DYNPATH=-Wl,-rpath, 423 else 424 AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [ 425 SAVE_LDFLAGS="${LDFLAGS}" 426 LDFLAGS="${SAVE_LDFLAGS} -rpath /" 427 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no]) 428 LDFLAGS="${SAVE_LDFLAGS}" 429 ]) 430 if test "$git_cv_ld_rpath" = "yes"; then 431 CC_LD_DYNPATH=-rpath 432 else 433 CC_LD_DYNPATH= 434 AC_MSG_WARN([linker does not support runtime path to dynamic libraries]) 435 fi 436 fi 437fi 438GIT_CONF_SUBST([CC_LD_DYNPATH]) 439#AC_PROG_INSTALL # needs install-sh or install.sh in sources 440AC_CHECK_TOOLS(AR, [gar ar], :) 441AC_CHECK_PROGS(TAR, [gtar tar]) 442AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff]) 443# TCLTK_PATH will be set to some value if we want Tcl/Tk 444# or will be empty otherwise. 445if test -n "$NO_TCLTK"; then 446 TCLTK_PATH= 447else 448 if test "$with_tcltk" = ""; then 449 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'. 450 TCLTK_PATH=wish 451 elif test "$with_tcltk" = "yes"; then 452 # Tcl/Tk check requested. 453 AC_CHECK_PROGS(TCLTK_PATH, [wish], ) 454 else 455 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk]) 456 TCLTK_PATH="$with_tcltk" 457 fi 458fi 459GIT_CONF_SUBST([TCLTK_PATH]) 460AC_CHECK_PROGS(ASCIIDOC, [asciidoc]) 461if test -n "$ASCIIDOC"; then 462 AC_MSG_CHECKING([for asciidoc version]) 463 asciidoc_version=`$ASCIIDOC --version 2>/dev/null` 464 case "${asciidoc_version}" in 465 asciidoc' '8*) 466 AC_MSG_RESULT([${asciidoc_version}]) 467 ;; 468 *) 469 AC_MSG_RESULT([${asciidoc_version} (unknown)]) 470 ;; 471 esac 472fi 473 474 475## Checks for libraries. 476AC_MSG_NOTICE([CHECKS for libraries]) 477# 478# Define NO_OPENSSL environment variable if you do not have OpenSSL. 479# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin). 480 481GIT_STASH_FLAGS($OPENSSLDIR) 482 483AC_CHECK_LIB([crypto], [SHA1_Init], 484[NEEDS_SSL_WITH_CRYPTO=], 485[AC_CHECK_LIB([ssl], [SHA1_Init], 486 [NEEDS_SSL_WITH_CRYPTO=YesPlease NO_OPENSSL=], 487 [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])]) 488 489GIT_UNSTASH_FLAGS($OPENSSLDIR) 490 491GIT_CONF_SUBST([NEEDS_SSL_WITH_CRYPTO]) 492GIT_CONF_SUBST([NO_OPENSSL]) 493 494# 495# Define USE_LIBPCRE if you have and want to use libpcre. git-grep will be 496# able to use Perl-compatible regular expressions. 497# 498 499if test -n "$USE_LIBPCRE"; then 500 501GIT_STASH_FLAGS($LIBPCREDIR) 502 503AC_CHECK_LIB([pcre], [pcre_version], 504[USE_LIBPCRE=YesPlease], 505[USE_LIBPCRE=]) 506 507GIT_UNSTASH_FLAGS($LIBPCREDIR) 508 509GIT_CONF_SUBST([USE_LIBPCRE]) 510 511fi 512 513# 514# Define NO_CURL if you do not have libcurl installed. git-http-pull and 515# git-http-push are not built, and you cannot use http:// and https:// 516# transports. 517 518GIT_STASH_FLAGS($CURLDIR) 519 520AC_CHECK_LIB([curl], [curl_global_init], 521[NO_CURL=], 522[NO_CURL=YesPlease]) 523 524if test -z "${NO_CURL}" && test -z "${NO_OPENSSL}"; then 525 526AC_CHECK_LIB([curl], [Curl_ssl_init], 527[NEEDS_SSL_WITH_CURL=YesPlease], 528[NEEDS_SSL_WITH_CURL=]) 529 530GIT_CONF_SUBST([NEEDS_SSL_WITH_CURL]) 531 532fi 533 534GIT_UNSTASH_FLAGS($CURLDIR) 535 536GIT_CONF_SUBST([NO_CURL]) 537 538if test -z "$NO_CURL"; then 539 540AC_CHECK_PROG([CURL_CONFIG], [curl-config], 541[curl-config], 542[no]) 543 544if test $CURL_CONFIG != no; then 545 GIT_CONF_SUBST([CURL_CONFIG]) 546fi 547 548fi 549 550 551# 552# Define NO_EXPAT if you do not have expat installed. git-http-push is 553# not built, and you cannot push using http:// and https:// transports. 554 555GIT_STASH_FLAGS($EXPATDIR) 556 557AC_CHECK_LIB([expat], [XML_ParserCreate], 558[NO_EXPAT=], 559[NO_EXPAT=YesPlease]) 560 561GIT_UNSTASH_FLAGS($EXPATDIR) 562 563GIT_CONF_SUBST([NO_EXPAT]) 564 565# 566# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and 567# some Solaris installations). 568# Define NO_ICONV if neither libc nor libiconv support iconv. 569 570if test -z "$NO_ICONV"; then 571 572GIT_STASH_FLAGS($ICONVDIR) 573 574AC_DEFUN([ICONVTEST_SRC], 575[AC_LANG_PROGRAM([#include <iconv.h>], 576 [iconv_open("", "");])]) 577 578if test -n "$ICONVDIR"; then 579 lib_order="-liconv -lc" 580else 581 lib_order="-lc -liconv" 582fi 583 584NO_ICONV=YesPlease 585 586for l in $lib_order; do 587 if test "$l" = "-liconv"; then 588 NEEDS_LIBICONV=YesPlease 589 else 590 NEEDS_LIBICONV= 591 fi 592 593 old_LIBS="$LIBS" 594 LIBS="$LIBS $l" 595 AC_MSG_CHECKING([for iconv in $l]) 596 AC_LINK_IFELSE([ICONVTEST_SRC], 597 [AC_MSG_RESULT([yes]) 598 NO_ICONV= 599 break], 600 [AC_MSG_RESULT([no])]) 601 LIBS="$old_LIBS" 602done 603 604#in case of break 605LIBS="$old_LIBS" 606 607GIT_UNSTASH_FLAGS($ICONVDIR) 608 609GIT_CONF_SUBST([NEEDS_LIBICONV]) 610GIT_CONF_SUBST([NO_ICONV]) 611 612if test -n "$NO_ICONV"; then 613 NEEDS_LIBICONV= 614fi 615 616fi 617 618# 619# Define NO_DEFLATE_BOUND if deflateBound is missing from zlib. 620 621GIT_STASH_FLAGS($ZLIB_PATH) 622 623AC_DEFUN([ZLIBTEST_SRC], [ 624AC_LANG_PROGRAM([#include <zlib.h>], 625 [deflateBound(0, 0);])]) 626AC_MSG_CHECKING([for deflateBound in -lz]) 627old_LIBS="$LIBS" 628LIBS="$LIBS -lz" 629AC_LINK_IFELSE([ZLIBTEST_SRC], 630 [AC_MSG_RESULT([yes])], 631 [AC_MSG_RESULT([no]) 632 NO_DEFLATE_BOUND=yes]) 633LIBS="$old_LIBS" 634 635GIT_UNSTASH_FLAGS($ZLIB_PATH) 636 637GIT_CONF_SUBST([NO_DEFLATE_BOUND]) 638 639# 640# Define NEEDS_SOCKET if linking with libc is not enough (SunOS, 641# Patrick Mauritz). 642AC_CHECK_LIB([c], [socket], 643[NEEDS_SOCKET=], 644[NEEDS_SOCKET=YesPlease]) 645GIT_CONF_SUBST([NEEDS_SOCKET]) 646test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket" 647 648# 649# The next few tests will define NEEDS_RESOLV if linking with 650# libresolv provides some of the functions we would normally get 651# from libc. 652NEEDS_RESOLV= 653# 654# Define NO_INET_NTOP if linking with -lresolv is not enough. 655# Solaris 2.7 in particular hos inet_ntop in -lresolv. 656NO_INET_NTOP= 657AC_CHECK_FUNC([inet_ntop], 658 [], 659 [AC_CHECK_LIB([resolv], [inet_ntop], 660 [NEEDS_RESOLV=YesPlease], 661 [NO_INET_NTOP=YesPlease]) 662]) 663GIT_CONF_SUBST([NO_INET_NTOP]) 664# 665# Define NO_INET_PTON if linking with -lresolv is not enough. 666# Solaris 2.7 in particular hos inet_pton in -lresolv. 667NO_INET_PTON= 668AC_CHECK_FUNC([inet_pton], 669 [], 670 [AC_CHECK_LIB([resolv], [inet_pton], 671 [NEEDS_RESOLV=YesPlease], 672 [NO_INET_PTON=YesPlease]) 673]) 674GIT_CONF_SUBST([NO_INET_PTON]) 675# 676# Define NO_HSTRERROR if linking with -lresolv is not enough. 677# Solaris 2.6 in particular has no hstrerror, even in -lresolv. 678NO_HSTRERROR= 679AC_CHECK_FUNC([hstrerror], 680 [], 681 [AC_CHECK_LIB([resolv], [hstrerror], 682 [NEEDS_RESOLV=YesPlease], 683 [NO_HSTRERROR=YesPlease]) 684]) 685GIT_CONF_SUBST([NO_HSTRERROR]) 686 687dnl This must go after all the possible places for its initialization, 688dnl in the AC_CHECK_FUNC invocations above. 689GIT_CONF_SUBST([NEEDS_RESOLV]) 690# 691# If any of the above tests determined that -lresolv is needed at 692# build-time, also set it here for remaining configure-time checks. 693test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv" 694 695AC_CHECK_LIB([c], [basename], 696[NEEDS_LIBGEN=], 697[NEEDS_LIBGEN=YesPlease]) 698GIT_CONF_SUBST([NEEDS_LIBGEN]) 699test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen" 700 701AC_CHECK_LIB([c], [gettext], 702[LIBC_CONTAINS_LIBINTL=YesPlease], 703[LIBC_CONTAINS_LIBINTL=]) 704GIT_CONF_SUBST([LIBC_CONTAINS_LIBINTL]) 705 706# 707# Define NO_GETTEXT if you don't want Git output to be translated. 708# A translated Git requires GNU libintl or another gettext implementation 709AC_CHECK_HEADER([libintl.h], 710[NO_GETTEXT=], 711[NO_GETTEXT=YesPlease]) 712GIT_CONF_SUBST([NO_GETTEXT]) 713 714if test -z "$NO_GETTEXT"; then 715 test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl" 716fi 717 718## Checks for header files. 719AC_MSG_NOTICE([CHECKS for header files]) 720# 721# Define NO_SYS_SELECT_H if you don't have sys/select.h. 722AC_CHECK_HEADER([sys/select.h], 723[NO_SYS_SELECT_H=], 724[NO_SYS_SELECT_H=UnfortunatelyYes]) 725GIT_CONF_SUBST([NO_SYS_SELECT_H]) 726# 727# Define NO_SYS_POLL_H if you don't have sys/poll.h 728AC_CHECK_HEADER([sys/poll.h], 729[NO_SYS_POLL_H=], 730[NO_SYS_POLL_H=UnfortunatelyYes]) 731GIT_CONF_SUBST([NO_SYS_POLL_H]) 732# 733# Define NO_INTTYPES_H if you don't have inttypes.h 734AC_CHECK_HEADER([inttypes.h], 735[NO_INTTYPES_H=], 736[NO_INTTYPES_H=UnfortunatelyYes]) 737GIT_CONF_SUBST([NO_INTTYPES_H]) 738# 739# Define OLD_ICONV if your library has an old iconv(), where the second 740# (input buffer pointer) parameter is declared with type (const char **). 741AC_DEFUN([OLDICONVTEST_SRC], [ 742AC_LANG_PROGRAM([[ 743#include <iconv.h> 744 745extern size_t iconv(iconv_t cd, 746 char **inbuf, size_t *inbytesleft, 747 char **outbuf, size_t *outbytesleft); 748]], [])]) 749 750GIT_STASH_FLAGS($ICONVDIR) 751 752AC_MSG_CHECKING([for old iconv()]) 753AC_COMPILE_IFELSE([OLDICONVTEST_SRC], 754 [AC_MSG_RESULT([no])], 755 [AC_MSG_RESULT([yes]) 756 OLD_ICONV=UnfortunatelyYes]) 757 758GIT_UNSTASH_FLAGS($ICONVDIR) 759 760GIT_CONF_SUBST([OLD_ICONV]) 761 762## Checks for typedefs, structures, and compiler characteristics. 763AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics]) 764# 765TYPE_SOCKLEN_T 766case $ac_cv_type_socklen_t in 767 yes) SOCKLEN_T='';; 768 *) SOCKLEN_T=$git_cv_socklen_t_equiv;; 769esac 770GIT_CONF_SUBST([SOCKLEN_T]) 771 772# 773# Define NO_STRUCT_ITIMERVAL if you don't have struct itimerval. 774AC_CHECK_TYPES([struct itimerval], 775[NO_STRUCT_ITIMERVAL=], 776[NO_STRUCT_ITIMERVAL=UnfortunatelyYes], 777[#include <sys/time.h>]) 778GIT_CONF_SUBST([NO_STRUCT_ITIMERVAL]) 779# 780# Define USE_ST_TIMESPEC=YesPlease when stat.st_mtimespec.tv_nsec exists. 781# Define NO_NSEC=YesPlease when neither stat.st_mtim.tv_nsec nor 782# stat.st_mtimespec.tv_nsec exists. 783AC_CHECK_MEMBER([struct stat.st_mtimespec.tv_nsec]) 784AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec]) 785if test x$ac_cv_member_struct_stat_st_mtimespec_tv_nsec = xyes; then 786 USE_ST_TIMESPEC=YesPlease 787 GIT_CONF_SUBST([USE_ST_TIMESPEC]) 788elif test x$ac_cv_member_struct_stat_st_mtim_tv_nsec != xyes; then 789 NO_NSEC=YesPlease 790 GIT_CONF_SUBST([NO_NSEC]) 791fi 792# 793# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks 794# d_type in struct dirent (latest Cygwin -- will be fixed soonish). 795AC_CHECK_MEMBER(struct dirent.d_type, 796[NO_D_TYPE_IN_DIRENT=], 797[NO_D_TYPE_IN_DIRENT=YesPlease], 798[#include <dirent.h>]) 799GIT_CONF_SUBST([NO_D_TYPE_IN_DIRENT]) 800# 801# Define NO_GECOS_IN_PWENT if you don't have pw_gecos in struct passwd 802# in the C library. 803AC_CHECK_MEMBER(struct passwd.pw_gecos, 804[NO_GECOS_IN_PWENT=], 805[NO_GECOS_IN_PWENT=YesPlease], 806[#include <pwd.h>]) 807GIT_CONF_SUBST([NO_GECOS_IN_PWENT]) 808# 809# Define NO_SOCKADDR_STORAGE if your platform does not have struct 810# sockaddr_storage. 811AC_CHECK_TYPE(struct sockaddr_storage, 812[NO_SOCKADDR_STORAGE=], 813[NO_SOCKADDR_STORAGE=YesPlease],[ 814#include <sys/types.h> 815#include <sys/socket.h> 816]) 817GIT_CONF_SUBST([NO_SOCKADDR_STORAGE]) 818# 819# Define NO_IPV6 if you lack IPv6 support and getaddrinfo(). 820AC_CHECK_TYPE([struct addrinfo],[ 821 GIT_CHECK_FUNC([getaddrinfo], 822 [NO_IPV6=], 823 [NO_IPV6=YesPlease]) 824],[NO_IPV6=YesPlease],[ 825#include <sys/types.h> 826#include <sys/socket.h> 827#include <netdb.h> 828]) 829GIT_CONF_SUBST([NO_IPV6]) 830# 831# Define NO_REGEX if you have no or inferior regex support in your C library. 832AC_CACHE_CHECK([whether the platform regex can handle null bytes], 833 [ac_cv_c_excellent_regex], [ 834AC_EGREP_CPP(yippeeyeswehaveit, 835 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT 836#include <regex.h> 837], 838[#ifdef REG_STARTEND 839yippeeyeswehaveit 840#endif 841]), 842 [ac_cv_c_excellent_regex=yes], 843 [ac_cv_c_excellent_regex=no]) 844]) 845if test $ac_cv_c_excellent_regex = yes; then 846 NO_REGEX= 847else 848 NO_REGEX=YesPlease 849fi 850GIT_CONF_SUBST([NO_REGEX]) 851# 852# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds 853# when attempting to read from an fopen'ed directory. 854AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory], 855 [ac_cv_fread_reads_directories], 856[ 857AC_RUN_IFELSE( 858 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], 859 [[char c; 860 FILE *f = fopen(".", "r"); 861 return f && fread(&c, 1, 1, f)]])], 862 [ac_cv_fread_reads_directories=no], 863 [ac_cv_fread_reads_directories=yes]) 864]) 865if test $ac_cv_fread_reads_directories = yes; then 866 FREAD_READS_DIRECTORIES=UnfortunatelyYes 867else 868 FREAD_READS_DIRECTORIES= 869fi 870GIT_CONF_SUBST([FREAD_READS_DIRECTORIES]) 871# 872# Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf() 873# or vsnprintf() return -1 instead of number of characters which would 874# have been written to the final string if enough space had been available. 875AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value], 876 [ac_cv_snprintf_returns_bogus], 877[ 878AC_RUN_IFELSE( 879 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT 880 #include "stdarg.h" 881 882 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...) 883 { 884 int ret; 885 va_list ap; 886 va_start(ap, format); 887 ret = vsnprintf(str, maxsize, format, ap); 888 va_end(ap); 889 return ret; 890 }], 891 [[char buf[6]; 892 if (test_vsnprintf(buf, 3, "%s", "12345") != 5 893 || strcmp(buf, "12")) return 1; 894 if (snprintf(buf, 3, "%s", "12345") != 5 895 || strcmp(buf, "12")) return 1]])], 896 [ac_cv_snprintf_returns_bogus=no], 897 [ac_cv_snprintf_returns_bogus=yes]) 898]) 899if test $ac_cv_snprintf_returns_bogus = yes; then 900 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes 901else 902 SNPRINTF_RETURNS_BOGUS= 903fi 904GIT_CONF_SUBST([SNPRINTF_RETURNS_BOGUS]) 905# 906# Define NEEDS_MODE_TRANSLATION if your OS strays from the typical file type 907# bits in mode values. 908AC_CACHE_CHECK([whether the platform uses typical file type bits], 909 [ac_cv_sane_mode_bits], [ 910AC_EGREP_CPP(yippeeyeswehaveit, 911 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], 912[#if S_IFMT == 0170000 && \ 913 S_IFREG == 0100000 && S_IFDIR == 0040000 && S_IFLNK == 0120000 && \ 914 S_IFBLK == 0060000 && S_IFCHR == 0020000 && \ 915 S_IFIFO == 0010000 && S_IFSOCK == 0140000 916yippeeyeswehaveit 917#endif 918]), 919 [ac_cv_sane_mode_bits=yes], 920 [ac_cv_sane_mode_bits=no]) 921]) 922if test $ac_cv_sane_mode_bits = yes; then 923 NEEDS_MODE_TRANSLATION= 924else 925 NEEDS_MODE_TRANSLATION=UnfortunatelyYes 926fi 927GIT_CONF_SUBST([NEEDS_MODE_TRANSLATION]) 928 929 930## Checks for library functions. 931## (in default C library and libraries checked by AC_CHECK_LIB) 932AC_MSG_NOTICE([CHECKS for library functions]) 933# 934# Define NO_LIBGEN_H if you don't have libgen.h. 935AC_CHECK_HEADER([libgen.h], 936[NO_LIBGEN_H=], 937[NO_LIBGEN_H=YesPlease]) 938GIT_CONF_SUBST([NO_LIBGEN_H]) 939# 940# Define HAVE_PATHS_H if you have paths.h. 941AC_CHECK_HEADER([paths.h], 942[HAVE_PATHS_H=YesPlease], 943[HAVE_PATHS_H=]) 944GIT_CONF_SUBST([HAVE_PATHS_H]) 945# 946# Define HAVE_LIBCHARSET_H if have libcharset.h 947AC_CHECK_HEADER([libcharset.h], 948[HAVE_LIBCHARSET_H=YesPlease], 949[HAVE_LIBCHARSET_H=]) 950GIT_CONF_SUBST([HAVE_LIBCHARSET_H]) 951# 952# Define HAVE_STRINGS_H if you have strings.h 953AC_CHECK_HEADER([strings.h], 954[HAVE_STRINGS_H=YesPlease], 955[HAVE_STRINGS_H=]) 956GIT_CONF_SUBST([HAVE_STRINGS_H]) 957# Define CHARSET_LIB if libiconv does not export the locale_charset symbol 958# and libcharset does 959CHARSET_LIB= 960AC_CHECK_LIB([iconv], [locale_charset], 961 [CHARSET_LIB=-liconv], 962 [AC_CHECK_LIB([charset], [locale_charset], 963 [CHARSET_LIB=-lcharset])]) 964GIT_CONF_SUBST([CHARSET_LIB]) 965# 966# Define NO_HMAC_CTX_CLEANUP=YesPlease if HMAC_CTX_cleanup is missing. 967AC_CHECK_LIB([crypto], [HMAC_CTX_cleanup], 968 [], [GIT_CONF_SUBST([NO_HMAC_CTX_CLEANUP], [YesPlease])]) 969# 970# Define HAVE_CLOCK_GETTIME=YesPlease if clock_gettime is available. 971GIT_CHECK_FUNC(clock_gettime, 972 [HAVE_CLOCK_GETTIME=YesPlease], 973 [HAVE_CLOCK_GETTIME=]) 974GIT_CONF_SUBST([HAVE_CLOCK_GETTIME]) 975 976AC_DEFUN([CLOCK_MONOTONIC_SRC], [ 977AC_LANG_PROGRAM([[ 978#include <time.h> 979clockid_t id = CLOCK_MONOTONIC; 980]])]) 981 982# 983# Define HAVE_CLOCK_MONOTONIC=YesPlease if CLOCK_MONOTONIC is available. 984AC_MSG_CHECKING([for CLOCK_MONOTONIC]) 985AC_COMPILE_IFELSE([CLOCK_MONOTONIC_SRC], 986 [AC_MSG_RESULT([yes]) 987 HAVE_CLOCK_MONOTONIC=YesPlease], 988 [AC_MSG_RESULT([no]) 989 HAVE_CLOCK_MONOTONIC=]) 990GIT_CONF_SUBST([HAVE_CLOCK_MONOTONIC]) 991# 992# Define NO_SETITIMER if you don't have setitimer. 993GIT_CHECK_FUNC(setitimer, 994[NO_SETITIMER=], 995[NO_SETITIMER=YesPlease]) 996GIT_CONF_SUBST([NO_SETITIMER]) 997# 998# Define NO_STRCASESTR if you don't have strcasestr. 999GIT_CHECK_FUNC(strcasestr,1000[NO_STRCASESTR=],1001[NO_STRCASESTR=YesPlease])1002GIT_CONF_SUBST([NO_STRCASESTR])1003#1004# Define NO_MEMMEM if you don't have memmem.1005GIT_CHECK_FUNC(memmem,1006[NO_MEMMEM=],1007[NO_MEMMEM=YesPlease])1008GIT_CONF_SUBST([NO_MEMMEM])1009#1010# Define NO_STRLCPY if you don't have strlcpy.1011GIT_CHECK_FUNC(strlcpy,1012[NO_STRLCPY=],1013[NO_STRLCPY=YesPlease])1014GIT_CONF_SUBST([NO_STRLCPY])1015#1016# Define NO_UINTMAX_T if your platform does not have uintmax_t1017AC_CHECK_TYPE(uintmax_t,1018[NO_UINTMAX_T=],1019[NO_UINTMAX_T=YesPlease],[1020#include <inttypes.h>1021])1022GIT_CONF_SUBST([NO_UINTMAX_T])1023#1024# Define NO_STRTOUMAX if you don't have strtoumax in the C library.1025GIT_CHECK_FUNC(strtoumax,1026[NO_STRTOUMAX=],1027[NO_STRTOUMAX=YesPlease])1028GIT_CONF_SUBST([NO_STRTOUMAX])1029#1030# Define NO_SETENV if you don't have setenv in the C library.1031GIT_CHECK_FUNC(setenv,1032[NO_SETENV=],1033[NO_SETENV=YesPlease])1034GIT_CONF_SUBST([NO_SETENV])1035#1036# Define NO_UNSETENV if you don't have unsetenv in the C library.1037GIT_CHECK_FUNC(unsetenv,1038[NO_UNSETENV=],1039[NO_UNSETENV=YesPlease])1040GIT_CONF_SUBST([NO_UNSETENV])1041#1042# Define NO_MKDTEMP if you don't have mkdtemp in the C library.1043GIT_CHECK_FUNC(mkdtemp,1044[NO_MKDTEMP=],1045[NO_MKDTEMP=YesPlease])1046GIT_CONF_SUBST([NO_MKDTEMP])1047#1048# Define NO_MKSTEMPS if you don't have mkstemps in the C library.1049GIT_CHECK_FUNC(mkstemps,1050[NO_MKSTEMPS=],1051[NO_MKSTEMPS=YesPlease])1052GIT_CONF_SUBST([NO_MKSTEMPS])1053#1054# Define NO_INITGROUPS if you don't have initgroups in the C library.1055GIT_CHECK_FUNC(initgroups,1056[NO_INITGROUPS=],1057[NO_INITGROUPS=YesPlease])1058GIT_CONF_SUBST([NO_INITGROUPS])1059#1060# Define HAVE_GETDELIM if you have getdelim in the C library.1061GIT_CHECK_FUNC(getdelim,1062[HAVE_GETDELIM=YesPlease],1063[HAVE_GETDELIM=])1064GIT_CONF_SUBST([HAVE_GETDELIM])1065#1066#1067# Define NO_MMAP if you want to avoid mmap.1068#1069# Define NO_ICONV if your libc does not properly support iconv.10701071AC_DEFUN([BSD_SYSCTL_SRC], [1072AC_LANG_PROGRAM([[1073#include <stddef.h>1074#include <sys/types.h>1075#include <sys/sysctl.h>1076]],[[1077int val, mib[2];1078size_t len;1079mib[0] = CTL_HW;1080mib[1] = 1;1081len = sizeof(val);1082return sysctl(mib, 2, &val, &len, NULL, 0) ? 1 : 0;1083]])])10841085#1086# Define HAVE_BSD_SYSCTL=YesPlease if a BSD-compatible sysctl function is available.1087AC_MSG_CHECKING([for BSD sysctl])1088AC_COMPILE_IFELSE([BSD_SYSCTL_SRC],1089 [AC_MSG_RESULT([yes])1090 HAVE_BSD_SYSCTL=YesPlease],1091 [AC_MSG_RESULT([no])1092 HAVE_BSD_SYSCTL=])1093GIT_CONF_SUBST([HAVE_BSD_SYSCTL])10941095## Other checks.1096# Define USE_PIC if you need the main git objects to be built with -fPIC1097# in order to build and link perl/Git.so. x86-64 seems to need this.1098#1099# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.1100# Enable it on Windows. By default, symrefs are still used.1101#1102# Define NO_PTHREADS if we do not have pthreads.1103#1104# Define PTHREAD_LIBS to the linker flag used for Pthread support.1105AC_DEFUN([PTHREADTEST_SRC], [1106AC_LANG_PROGRAM([[1107#include <pthread.h>1108]], [[1109 pthread_mutex_t test_mutex;1110 pthread_key_t test_key;1111 int retcode = 0;1112 retcode |= pthread_key_create(&test_key, (void *)0);1113 retcode |= pthread_mutex_init(&test_mutex,(void *)0);1114 retcode |= pthread_mutex_lock(&test_mutex);1115 retcode |= pthread_mutex_unlock(&test_mutex);1116 return retcode;1117]])])11181119dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(1120dnl [[#include <pthread.h>]],1121dnl [[pthread_mutex_t test_mutex;]]1122dnl )])11231124NO_PTHREADS=UnfortunatelyYes1125PTHREAD_LIBS=11261127if test -n "$USER_NOPTHREAD"; then1128 AC_MSG_NOTICE([Skipping POSIX Threads at user request.])1129# handle these separately since PTHREAD_CFLAGS could be '-lpthreads1130# -D_REENTRANT' or some such.1131elif test -z "$PTHREAD_CFLAGS"; then1132 threads_found=no1133 # Attempt to compile and link some code using pthreads to determine1134 # required linker flags. The order is somewhat important here: We1135 # first try it without any extra flags, to catch systems where1136 # pthreads are part of the C library, then go on testing various other1137 # flags. We do so to avoid false positives. For example, on Mac OS X1138 # pthreads are part of the C library; moreover, the compiler allows us1139 # to add "-mt" to the CFLAGS (although it will do nothing except1140 # trigger a warning about an unused flag). Hence if we checked for1141 # "-mt" before "" we would end up picking it. But unfortunately this1142 # would then trigger compiler warnings on every single file we compile.1143 for opt in "" -mt -pthread -lpthread; do1144 old_CFLAGS="$CFLAGS"1145 old_LIBS="$LIBS"1146 case "$opt" in1147 -l*) LIBS="$opt $LIBS" ;;1148 *) CFLAGS="$opt $CFLAGS" ;;1149 esac11501151 AC_MSG_CHECKING([for POSIX Threads with '$opt'])1152 AC_LINK_IFELSE([PTHREADTEST_SRC],1153 [AC_MSG_RESULT([yes])1154 NO_PTHREADS=1155 PTHREAD_LIBS="$opt"1156 PTHREAD_CFLAGS="$opt"1157 threads_found=yes1158 break1159 ],1160 [AC_MSG_RESULT([no])])1161 CFLAGS="$old_CFLAGS"1162 LIBS="$old_LIBS"1163 done1164 if test $threads_found != yes; then1165 AC_CHECK_LIB([pthread], [pthread_create],1166 [PTHREAD_LIBS="-lpthread"],1167 [NO_PTHREADS=UnfortunatelyYes])1168 fi1169else1170 old_CFLAGS="$CFLAGS"1171 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"1172 AC_MSG_CHECKING([for POSIX Threads with '$PTHREAD_CFLAGS'])1173 AC_LINK_IFELSE([PTHREADTEST_SRC],1174 [AC_MSG_RESULT([yes])1175 NO_PTHREADS=1176 PTHREAD_LIBS="$PTHREAD_CFLAGS"1177 ],1178 [AC_MSG_RESULT([no])])11791180 CFLAGS="$old_CFLAGS"1181fi11821183CFLAGS="$old_CFLAGS"11841185GIT_CONF_SUBST([PTHREAD_CFLAGS])1186GIT_CONF_SUBST([PTHREAD_LIBS])1187GIT_CONF_SUBST([NO_PTHREADS])11881189## Output files1190AC_CONFIG_FILES(["${config_file}":"${config_in}"])1191AC_OUTPUT