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($CURLDIR) 519 520AC_CHECK_LIB([curl], [curl_global_init], 521[NO_CURL=], 522[NO_CURL=YesPlease]) 523 524GIT_UNSTASH_FLAGS($CURLDIR) 525 526GIT_CONF_SUBST([NO_CURL]) 527 528# 529# Define NO_EXPAT if you do not have expat installed. git-http-push is 530# not built, and you cannot push using http:// and https:// transports. 531 532GIT_STASH_FLAGS($EXPATDIR) 533 534AC_CHECK_LIB([expat], [XML_ParserCreate], 535[NO_EXPAT=], 536[NO_EXPAT=YesPlease]) 537 538GIT_UNSTASH_FLAGS($EXPATDIR) 539 540GIT_CONF_SUBST([NO_EXPAT]) 541 542# 543# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and 544# some Solaris installations). 545# Define NO_ICONV if neither libc nor libiconv support iconv. 546 547if test -z "$NO_ICONV"; then 548 549GIT_STASH_FLAGS($ICONVDIR) 550 551AC_DEFUN([ICONVTEST_SRC], 552[AC_LANG_PROGRAM([#include <iconv.h>], 553 [iconv_open("", "");])]) 554 555if test -n "$ICONVDIR"; then 556 lib_order="-liconv -lc" 557else 558 lib_order="-lc -liconv" 559fi 560 561NO_ICONV=YesPlease 562 563for l in $lib_order; do 564 if test "$l" = "-liconv"; then 565 NEEDS_LIBICONV=YesPlease 566 else 567 NEEDS_LIBICONV= 568 fi 569 570 old_LIBS="$LIBS" 571 LIBS="$LIBS $l" 572 AC_MSG_CHECKING([for iconv in $l]) 573 AC_LINK_IFELSE([ICONVTEST_SRC], 574 [AC_MSG_RESULT([yes]) 575 NO_ICONV= 576 break], 577 [AC_MSG_RESULT([no])]) 578 LIBS="$old_LIBS" 579done 580 581#in case of break 582LIBS="$old_LIBS" 583 584GIT_UNSTASH_FLAGS($ICONVDIR) 585 586GIT_CONF_SUBST([NEEDS_LIBICONV]) 587GIT_CONF_SUBST([NO_ICONV]) 588 589if test -n "$NO_ICONV"; then 590 NEEDS_LIBICONV= 591fi 592 593fi 594 595# 596# Define NO_DEFLATE_BOUND if deflateBound is missing from zlib. 597 598GIT_STASH_FLAGS($ZLIB_PATH) 599 600AC_DEFUN([ZLIBTEST_SRC], [ 601AC_LANG_PROGRAM([#include <zlib.h>], 602 [deflateBound(0, 0);])]) 603AC_MSG_CHECKING([for deflateBound in -lz]) 604old_LIBS="$LIBS" 605LIBS="$LIBS -lz" 606AC_LINK_IFELSE([ZLIBTEST_SRC], 607 [AC_MSG_RESULT([yes])], 608 [AC_MSG_RESULT([no]) 609 NO_DEFLATE_BOUND=yes]) 610LIBS="$old_LIBS" 611 612GIT_UNSTASH_FLAGS($ZLIB_PATH) 613 614GIT_CONF_SUBST([NO_DEFLATE_BOUND]) 615 616# 617# Define NEEDS_SOCKET if linking with libc is not enough (SunOS, 618# Patrick Mauritz). 619AC_CHECK_LIB([c], [socket], 620[NEEDS_SOCKET=], 621[NEEDS_SOCKET=YesPlease]) 622GIT_CONF_SUBST([NEEDS_SOCKET]) 623test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket" 624 625# 626# The next few tests will define NEEDS_RESOLV if linking with 627# libresolv provides some of the functions we would normally get 628# from libc. 629NEEDS_RESOLV= 630# 631# Define NO_INET_NTOP if linking with -lresolv is not enough. 632# Solaris 2.7 in particular hos inet_ntop in -lresolv. 633NO_INET_NTOP= 634AC_CHECK_FUNC([inet_ntop], 635 [], 636 [AC_CHECK_LIB([resolv], [inet_ntop], 637 [NEEDS_RESOLV=YesPlease], 638 [NO_INET_NTOP=YesPlease]) 639]) 640GIT_CONF_SUBST([NO_INET_NTOP]) 641# 642# Define NO_INET_PTON if linking with -lresolv is not enough. 643# Solaris 2.7 in particular hos inet_pton in -lresolv. 644NO_INET_PTON= 645AC_CHECK_FUNC([inet_pton], 646 [], 647 [AC_CHECK_LIB([resolv], [inet_pton], 648 [NEEDS_RESOLV=YesPlease], 649 [NO_INET_PTON=YesPlease]) 650]) 651GIT_CONF_SUBST([NO_INET_PTON]) 652# 653# Define NO_HSTRERROR if linking with -lresolv is not enough. 654# Solaris 2.6 in particular has no hstrerror, even in -lresolv. 655NO_HSTRERROR= 656AC_CHECK_FUNC([hstrerror], 657 [], 658 [AC_CHECK_LIB([resolv], [hstrerror], 659 [NEEDS_RESOLV=YesPlease], 660 [NO_HSTRERROR=YesPlease]) 661]) 662GIT_CONF_SUBST([NO_HSTRERROR]) 663 664dnl This must go after all the possible places for its initialization, 665dnl in the AC_CHECK_FUNC invocations above. 666GIT_CONF_SUBST([NEEDS_RESOLV]) 667# 668# If any of the above tests determined that -lresolv is needed at 669# build-time, also set it here for remaining configure-time checks. 670test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv" 671 672AC_CHECK_LIB([c], [basename], 673[NEEDS_LIBGEN=], 674[NEEDS_LIBGEN=YesPlease]) 675GIT_CONF_SUBST([NEEDS_LIBGEN]) 676test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen" 677 678AC_CHECK_LIB([c], [gettext], 679[LIBC_CONTAINS_LIBINTL=YesPlease], 680[LIBC_CONTAINS_LIBINTL=]) 681GIT_CONF_SUBST([LIBC_CONTAINS_LIBINTL]) 682 683# 684# Define NO_GETTEXT if you don't want Git output to be translated. 685# A translated Git requires GNU libintl or another gettext implementation 686AC_CHECK_HEADER([libintl.h], 687[NO_GETTEXT=], 688[NO_GETTEXT=YesPlease]) 689GIT_CONF_SUBST([NO_GETTEXT]) 690 691if test -z "$NO_GETTEXT"; then 692 test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl" 693fi 694 695## Checks for header files. 696AC_MSG_NOTICE([CHECKS for header files]) 697# 698# Define NO_SYS_SELECT_H if you don't have sys/select.h. 699AC_CHECK_HEADER([sys/select.h], 700[NO_SYS_SELECT_H=], 701[NO_SYS_SELECT_H=UnfortunatelyYes]) 702GIT_CONF_SUBST([NO_SYS_SELECT_H]) 703# 704# Define NO_SYS_POLL_H if you don't have sys/poll.h 705AC_CHECK_HEADER([sys/poll.h], 706[NO_SYS_POLL_H=], 707[NO_SYS_POLL_H=UnfortunatelyYes]) 708GIT_CONF_SUBST([NO_SYS_POLL_H]) 709# 710# Define NO_INTTYPES_H if you don't have inttypes.h 711AC_CHECK_HEADER([inttypes.h], 712[NO_INTTYPES_H=], 713[NO_INTTYPES_H=UnfortunatelyYes]) 714GIT_CONF_SUBST([NO_INTTYPES_H]) 715# 716# Define OLD_ICONV if your library has an old iconv(), where the second 717# (input buffer pointer) parameter is declared with type (const char **). 718AC_DEFUN([OLDICONVTEST_SRC], [ 719AC_LANG_PROGRAM([[ 720#include <iconv.h> 721 722extern size_t iconv(iconv_t cd, 723 char **inbuf, size_t *inbytesleft, 724 char **outbuf, size_t *outbytesleft); 725]], [])]) 726 727GIT_STASH_FLAGS($ICONVDIR) 728 729AC_MSG_CHECKING([for old iconv()]) 730AC_COMPILE_IFELSE([OLDICONVTEST_SRC], 731 [AC_MSG_RESULT([no])], 732 [AC_MSG_RESULT([yes]) 733 OLD_ICONV=UnfortunatelyYes]) 734 735GIT_UNSTASH_FLAGS($ICONVDIR) 736 737GIT_CONF_SUBST([OLD_ICONV]) 738 739## Checks for typedefs, structures, and compiler characteristics. 740AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics]) 741# 742TYPE_SOCKLEN_T 743case $ac_cv_type_socklen_t in 744 yes) SOCKLEN_T='';; 745 *) SOCKLEN_T=$git_cv_socklen_t_equiv;; 746esac 747GIT_CONF_SUBST([SOCKLEN_T]) 748 749# 750# Define NO_STRUCT_ITIMERVAL if you don't have struct itimerval. 751AC_CHECK_TYPES([struct itimerval], 752[NO_STRUCT_ITIMERVAL=], 753[NO_STRUCT_ITIMERVAL=UnfortunatelyYes], 754[#include <sys/time.h>]) 755GIT_CONF_SUBST([NO_STRUCT_ITIMERVAL]) 756# 757# Define USE_ST_TIMESPEC=YesPlease when stat.st_mtimespec.tv_nsec exists. 758# Define NO_NSEC=YesPlease when neither stat.st_mtim.tv_nsec nor 759# stat.st_mtimespec.tv_nsec exists. 760AC_CHECK_MEMBER([struct stat.st_mtimespec.tv_nsec]) 761AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec]) 762if test x$ac_cv_member_struct_stat_st_mtimespec_tv_nsec = xyes; then 763 USE_ST_TIMESPEC=YesPlease 764 GIT_CONF_SUBST([USE_ST_TIMESPEC]) 765elif test x$ac_cv_member_struct_stat_st_mtim_tv_nsec != xyes; then 766 NO_NSEC=YesPlease 767 GIT_CONF_SUBST([NO_NSEC]) 768fi 769# 770# Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent. 771AC_CHECK_MEMBER(struct dirent.d_ino, 772[NO_D_INO_IN_DIRENT=], 773[NO_D_INO_IN_DIRENT=YesPlease], 774[#include <dirent.h>]) 775GIT_CONF_SUBST([NO_D_INO_IN_DIRENT]) 776# 777# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks 778# d_type in struct dirent (latest Cygwin -- will be fixed soonish). 779AC_CHECK_MEMBER(struct dirent.d_type, 780[NO_D_TYPE_IN_DIRENT=], 781[NO_D_TYPE_IN_DIRENT=YesPlease], 782[#include <dirent.h>]) 783GIT_CONF_SUBST([NO_D_TYPE_IN_DIRENT]) 784# 785# Define NO_GECOS_IN_PWENT if you don't have pw_gecos in struct passwd 786# in the C library. 787AC_CHECK_MEMBER(struct passwd.pw_gecos, 788[NO_GECOS_IN_PWENT=], 789[NO_GECOS_IN_PWENT=YesPlease], 790[#include <pwd.h>]) 791GIT_CONF_SUBST([NO_GECOS_IN_PWENT]) 792# 793# Define NO_SOCKADDR_STORAGE if your platform does not have struct 794# sockaddr_storage. 795AC_CHECK_TYPE(struct sockaddr_storage, 796[NO_SOCKADDR_STORAGE=], 797[NO_SOCKADDR_STORAGE=YesPlease],[ 798#include <sys/types.h> 799#include <sys/socket.h> 800]) 801GIT_CONF_SUBST([NO_SOCKADDR_STORAGE]) 802# 803# Define NO_IPV6 if you lack IPv6 support and getaddrinfo(). 804AC_CHECK_TYPE([struct addrinfo],[ 805 GIT_CHECK_FUNC([getaddrinfo], 806 [NO_IPV6=], 807 [NO_IPV6=YesPlease]) 808],[NO_IPV6=YesPlease],[ 809#include <sys/types.h> 810#include <sys/socket.h> 811#include <netdb.h> 812]) 813GIT_CONF_SUBST([NO_IPV6]) 814# 815# Define NO_REGEX if you have no or inferior regex support in your C library. 816AC_CACHE_CHECK([whether the platform regex can handle null bytes], 817 [ac_cv_c_excellent_regex], [ 818AC_EGREP_CPP(yippeeyeswehaveit, 819 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT 820#include <regex.h> 821], 822[#ifdef REG_STARTEND 823yippeeyeswehaveit 824#endif 825]), 826 [ac_cv_c_excellent_regex=yes], 827 [ac_cv_c_excellent_regex=no]) 828]) 829if test $ac_cv_c_excellent_regex = yes; then 830 NO_REGEX= 831else 832 NO_REGEX=YesPlease 833fi 834GIT_CONF_SUBST([NO_REGEX]) 835# 836# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds 837# when attempting to read from an fopen'ed directory. 838AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory], 839 [ac_cv_fread_reads_directories], 840[ 841AC_RUN_IFELSE( 842 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], 843 [[char c; 844 FILE *f = fopen(".", "r"); 845 return f && fread(&c, 1, 1, f)]])], 846 [ac_cv_fread_reads_directories=no], 847 [ac_cv_fread_reads_directories=yes]) 848]) 849if test $ac_cv_fread_reads_directories = yes; then 850 FREAD_READS_DIRECTORIES=UnfortunatelyYes 851else 852 FREAD_READS_DIRECTORIES= 853fi 854GIT_CONF_SUBST([FREAD_READS_DIRECTORIES]) 855# 856# Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf() 857# or vsnprintf() return -1 instead of number of characters which would 858# have been written to the final string if enough space had been available. 859AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value], 860 [ac_cv_snprintf_returns_bogus], 861[ 862AC_RUN_IFELSE( 863 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT 864 #include "stdarg.h" 865 866 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...) 867 { 868 int ret; 869 va_list ap; 870 va_start(ap, format); 871 ret = vsnprintf(str, maxsize, format, ap); 872 va_end(ap); 873 return ret; 874 }], 875 [[char buf[6]; 876 if (test_vsnprintf(buf, 3, "%s", "12345") != 5 877 || strcmp(buf, "12")) return 1; 878 if (snprintf(buf, 3, "%s", "12345") != 5 879 || strcmp(buf, "12")) return 1]])], 880 [ac_cv_snprintf_returns_bogus=no], 881 [ac_cv_snprintf_returns_bogus=yes]) 882]) 883if test $ac_cv_snprintf_returns_bogus = yes; then 884 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes 885else 886 SNPRINTF_RETURNS_BOGUS= 887fi 888GIT_CONF_SUBST([SNPRINTF_RETURNS_BOGUS]) 889# 890# Define NEEDS_MODE_TRANSLATION if your OS strays from the typical file type 891# bits in mode values. 892AC_CACHE_CHECK([whether the platform uses typical file type bits], 893 [ac_cv_sane_mode_bits], [ 894AC_EGREP_CPP(yippeeyeswehaveit, 895 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], 896[#if S_IFMT == 0170000 && \ 897 S_IFREG == 0100000 && S_IFDIR == 0040000 && S_IFLNK == 0120000 && \ 898 S_IFBLK == 0060000 && S_IFCHR == 0020000 && \ 899 S_IFIFO == 0010000 && S_IFSOCK == 0140000 900yippeeyeswehaveit 901#endif 902]), 903 [ac_cv_sane_mode_bits=yes], 904 [ac_cv_sane_mode_bits=no]) 905]) 906if test $ac_cv_sane_mode_bits = yes; then 907 NEEDS_MODE_TRANSLATION= 908else 909 NEEDS_MODE_TRANSLATION=UnfortunatelyYes 910fi 911GIT_CONF_SUBST([NEEDS_MODE_TRANSLATION]) 912 913 914## Checks for library functions. 915## (in default C library and libraries checked by AC_CHECK_LIB) 916AC_MSG_NOTICE([CHECKS for library functions]) 917# 918# Define NO_LIBGEN_H if you don't have libgen.h. 919AC_CHECK_HEADER([libgen.h], 920[NO_LIBGEN_H=], 921[NO_LIBGEN_H=YesPlease]) 922GIT_CONF_SUBST([NO_LIBGEN_H]) 923# 924# Define HAVE_PATHS_H if you have paths.h. 925AC_CHECK_HEADER([paths.h], 926[HAVE_PATHS_H=YesPlease], 927[HAVE_PATHS_H=]) 928GIT_CONF_SUBST([HAVE_PATHS_H]) 929# 930# Define HAVE_LIBCHARSET_H if have libcharset.h 931AC_CHECK_HEADER([libcharset.h], 932[HAVE_LIBCHARSET_H=YesPlease], 933[HAVE_LIBCHARSET_H=]) 934GIT_CONF_SUBST([HAVE_LIBCHARSET_H]) 935# 936# Define HAVE_STRINGS_H if you have strings.h 937AC_CHECK_HEADER([strings.h], 938[HAVE_STRINGS_H=YesPlease], 939[HAVE_STRINGS_H=]) 940GIT_CONF_SUBST([HAVE_STRINGS_H]) 941# Define CHARSET_LIB if libiconv does not export the locale_charset symbol 942# and libcharset does 943CHARSET_LIB= 944AC_CHECK_LIB([iconv], [locale_charset], 945 [CHARSET_LIB=-liconv], 946 [AC_CHECK_LIB([charset], [locale_charset], 947 [CHARSET_LIB=-lcharset])]) 948GIT_CONF_SUBST([CHARSET_LIB]) 949# 950# Define NO_HMAC_CTX_CLEANUP=YesPlease if HMAC_CTX_cleanup is missing. 951AC_CHECK_LIB([crypto], [HMAC_CTX_cleanup], 952 [], [GIT_CONF_SUBST([NO_HMAC_CTX_CLEANUP], [YesPlease])]) 953# 954# Define HAVE_CLOCK_GETTIME=YesPlease if clock_gettime is available. 955GIT_CHECK_FUNC(clock_gettime, 956 [HAVE_CLOCK_GETTIME=YesPlease], 957 [HAVE_CLOCK_GETTIME=]) 958GIT_CONF_SUBST([HAVE_CLOCK_GETTIME]) 959 960AC_DEFUN([CLOCK_MONOTONIC_SRC], [ 961AC_LANG_PROGRAM([[ 962#include <time.h> 963clockid_t id = CLOCK_MONOTONIC; 964]])]) 965 966# 967# Define HAVE_CLOCK_MONOTONIC=YesPlease if CLOCK_MONOTONIC is available. 968AC_MSG_CHECKING([for CLOCK_MONOTONIC]) 969AC_COMPILE_IFELSE([CLOCK_MONOTONIC_SRC], 970 [AC_MSG_RESULT([yes]) 971 HAVE_CLOCK_MONOTONIC=YesPlease], 972 [AC_MSG_RESULT([no]) 973 HAVE_CLOCK_MONOTONIC=]) 974GIT_CONF_SUBST([HAVE_CLOCK_MONOTONIC]) 975# 976# Define NO_SETITIMER if you don't have setitimer. 977GIT_CHECK_FUNC(setitimer, 978[NO_SETITIMER=], 979[NO_SETITIMER=YesPlease]) 980GIT_CONF_SUBST([NO_SETITIMER]) 981# 982# Define NO_STRCASESTR if you don't have strcasestr. 983GIT_CHECK_FUNC(strcasestr, 984[NO_STRCASESTR=], 985[NO_STRCASESTR=YesPlease]) 986GIT_CONF_SUBST([NO_STRCASESTR]) 987# 988# Define NO_MEMMEM if you don't have memmem. 989GIT_CHECK_FUNC(memmem, 990[NO_MEMMEM=], 991[NO_MEMMEM=YesPlease]) 992GIT_CONF_SUBST([NO_MEMMEM]) 993# 994# Define NO_STRLCPY if you don't have strlcpy. 995GIT_CHECK_FUNC(strlcpy, 996[NO_STRLCPY=], 997[NO_STRLCPY=YesPlease]) 998GIT_CONF_SUBST([NO_STRLCPY]) 999#1000# Define NO_UINTMAX_T if your platform does not have uintmax_t1001AC_CHECK_TYPE(uintmax_t,1002[NO_UINTMAX_T=],1003[NO_UINTMAX_T=YesPlease],[1004#include <inttypes.h>1005])1006GIT_CONF_SUBST([NO_UINTMAX_T])1007#1008# Define NO_STRTOUMAX if you don't have strtoumax in the C library.1009GIT_CHECK_FUNC(strtoumax,1010[NO_STRTOUMAX=],1011[NO_STRTOUMAX=YesPlease])1012GIT_CONF_SUBST([NO_STRTOUMAX])1013#1014# Define NO_SETENV if you don't have setenv in the C library.1015GIT_CHECK_FUNC(setenv,1016[NO_SETENV=],1017[NO_SETENV=YesPlease])1018GIT_CONF_SUBST([NO_SETENV])1019#1020# Define NO_UNSETENV if you don't have unsetenv in the C library.1021GIT_CHECK_FUNC(unsetenv,1022[NO_UNSETENV=],1023[NO_UNSETENV=YesPlease])1024GIT_CONF_SUBST([NO_UNSETENV])1025#1026# Define NO_MKDTEMP if you don't have mkdtemp in the C library.1027GIT_CHECK_FUNC(mkdtemp,1028[NO_MKDTEMP=],1029[NO_MKDTEMP=YesPlease])1030GIT_CONF_SUBST([NO_MKDTEMP])1031#1032# Define NO_MKSTEMPS if you don't have mkstemps in the C library.1033GIT_CHECK_FUNC(mkstemps,1034[NO_MKSTEMPS=],1035[NO_MKSTEMPS=YesPlease])1036GIT_CONF_SUBST([NO_MKSTEMPS])1037#1038# Define NO_INITGROUPS if you don't have initgroups in the C library.1039GIT_CHECK_FUNC(initgroups,1040[NO_INITGROUPS=],1041[NO_INITGROUPS=YesPlease])1042GIT_CONF_SUBST([NO_INITGROUPS])1043#1044#1045# Define NO_MMAP if you want to avoid mmap.1046#1047# Define NO_ICONV if your libc does not properly support iconv.10481049AC_DEFUN([BSD_SYSCTL_SRC], [1050AC_LANG_PROGRAM([[1051#include <stddef.h>1052#include <sys/types.h>1053#include <sys/sysctl.h>1054]],[[1055int val, mib[2];1056size_t len;1057mib[0] = CTL_HW;1058mib[1] = 1;1059len = sizeof(val);1060return sysctl(mib, 2, &val, &len, NULL, 0) ? 1 : 0;1061]])])10621063#1064# Define HAVE_BSD_SYSCTL=YesPlease if a BSD-compatible sysctl function is available.1065AC_MSG_CHECKING([for BSD sysctl])1066AC_COMPILE_IFELSE([BSD_SYSCTL_SRC],1067 [AC_MSG_RESULT([yes])1068 HAVE_BSD_SYSCTL=YesPlease],1069 [AC_MSG_RESULT([no])1070 HAVE_BSD_SYSCTL=])1071GIT_CONF_SUBST([HAVE_BSD_SYSCTL])10721073## Other checks.1074# Define USE_PIC if you need the main git objects to be built with -fPIC1075# in order to build and link perl/Git.so. x86-64 seems to need this.1076#1077# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.1078# Enable it on Windows. By default, symrefs are still used.1079#1080# Define NO_PTHREADS if we do not have pthreads.1081#1082# Define PTHREAD_LIBS to the linker flag used for Pthread support.1083AC_DEFUN([PTHREADTEST_SRC], [1084AC_LANG_PROGRAM([[1085#include <pthread.h>1086]], [[1087 pthread_mutex_t test_mutex;1088 pthread_key_t test_key;1089 int retcode = 0;1090 retcode |= pthread_key_create(&test_key, (void *)0);1091 retcode |= pthread_mutex_init(&test_mutex,(void *)0);1092 retcode |= pthread_mutex_lock(&test_mutex);1093 retcode |= pthread_mutex_unlock(&test_mutex);1094 return retcode;1095]])])10961097dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(1098dnl [[#include <pthread.h>]],1099dnl [[pthread_mutex_t test_mutex;]]1100dnl )])11011102NO_PTHREADS=UnfortunatelyYes1103PTHREAD_LIBS=11041105if test -n "$USER_NOPTHREAD"; then1106 AC_MSG_NOTICE([Skipping POSIX Threads at user request.])1107# handle these separately since PTHREAD_CFLAGS could be '-lpthreads1108# -D_REENTRANT' or some such.1109elif test -z "$PTHREAD_CFLAGS"; then1110 threads_found=no1111 # Attempt to compile and link some code using pthreads to determine1112 # required linker flags. The order is somewhat important here: We1113 # first try it without any extra flags, to catch systems where1114 # pthreads are part of the C library, then go on testing various other1115 # flags. We do so to avoid false positives. For example, on Mac OS X1116 # pthreads are part of the C library; moreover, the compiler allows us1117 # to add "-mt" to the CFLAGS (although it will do nothing except1118 # trigger a warning about an unused flag). Hence if we checked for1119 # "-mt" before "" we would end up picking it. But unfortunately this1120 # would then trigger compiler warnings on every single file we compile.1121 for opt in "" -mt -pthread -lpthread; do1122 old_CFLAGS="$CFLAGS"1123 CFLAGS="$opt $CFLAGS"1124 AC_MSG_CHECKING([for POSIX Threads with '$opt'])1125 AC_LINK_IFELSE([PTHREADTEST_SRC],1126 [AC_MSG_RESULT([yes])1127 NO_PTHREADS=1128 PTHREAD_LIBS="$opt"1129 PTHREAD_CFLAGS="$opt"1130 threads_found=yes1131 break1132 ],1133 [AC_MSG_RESULT([no])])1134 CFLAGS="$old_CFLAGS"1135 done1136 if test $threads_found != yes; then1137 AC_CHECK_LIB([pthread], [pthread_create],1138 [PTHREAD_LIBS="-lpthread"],1139 [NO_PTHREADS=UnfortunatelyYes])1140 fi1141else1142 old_CFLAGS="$CFLAGS"1143 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"1144 AC_MSG_CHECKING([for POSIX Threads with '$PTHREAD_CFLAGS'])1145 AC_LINK_IFELSE([PTHREADTEST_SRC],1146 [AC_MSG_RESULT([yes])1147 NO_PTHREADS=1148 PTHREAD_LIBS="$PTHREAD_CFLAGS"1149 ],1150 [AC_MSG_RESULT([no])])11511152 CFLAGS="$old_CFLAGS"1153fi11541155CFLAGS="$old_CFLAGS"11561157GIT_CONF_SUBST([PTHREAD_CFLAGS])1158GIT_CONF_SUBST([PTHREAD_LIBS])1159GIT_CONF_SUBST([NO_PTHREADS])11601161## Output files1162AC_CONFIG_FILES(["${config_file}":"${config_in}"])1163AC_OUTPUT