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 '$CSSMIN' to enable CSS minifying]) 229 GIT_CONF_SUBST([CSSMIN]) 230]) 231 232## Site configuration (override autodetection) 233## --with-PACKAGE[=ARG] and --without-PACKAGE 234AC_MSG_NOTICE([CHECKS for site configuration]) 235# 236# Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability 237# tests. These tests take up a significant amount of the total test time 238# but are not needed unless you plan to talk to SVN repos. 239# 240# Define PPC_SHA1 environment variable when running make to make use of 241# a bundled SHA1 routine optimized for PowerPC. 242# 243# Define NO_OPENSSL environment variable if you do not have OpenSSL. 244# This also implies BLK_SHA1. 245# 246# Define OPENSSLDIR=/foo/bar if your openssl header and library files are in 247# /foo/bar/include and /foo/bar/lib directories. 248AC_ARG_WITH(openssl, 249AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)]) 250AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]), 251GIT_PARSE_WITH([openssl])) 252 253# Define USE_LIBPCRE if you have and want to use libpcre. Various 254# commands such as log and grep offer runtime options to use 255# Perl-compatible regular expressions instead of standard or extended 256# POSIX regular expressions. 257# 258# Define LIBPCREDIR=/foo/bar if your libpcre header and library files are in 259# /foo/bar/include and /foo/bar/lib directories. 260# 261AC_ARG_WITH(libpcre, 262AS_HELP_STRING([--with-libpcre],[support Perl-compatible regexes (default is NO)]) 263AS_HELP_STRING([], [ARG can be also prefix for libpcre library and headers]), 264 if test "$withval" = "no"; then 265 USE_LIBPCRE= 266 elif test "$withval" = "yes"; then 267 USE_LIBPCRE=YesPlease 268 else 269 USE_LIBPCRE=YesPlease 270 LIBPCREDIR=$withval 271 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR]) 272 dnl USE_LIBPCRE can still be modified below, so don't substitute 273 dnl it yet. 274 GIT_CONF_SUBST([LIBPCREDIR]) 275 fi) 276# 277# Define HAVE_ALLOCA_H if you have working alloca(3) defined in that header. 278AC_FUNC_ALLOCA 279case $ac_cv_working_alloca_h in 280 yes) HAVE_ALLOCA_H=YesPlease;; 281 *) HAVE_ALLOCA_H='';; 282esac 283GIT_CONF_SUBST([HAVE_ALLOCA_H]) 284# 285# Define NO_CURL if you do not have curl installed. git-http-pull and 286# git-http-push are not built, and you cannot use http:// and https:// 287# transports. 288# 289# Define CURLDIR=/foo/bar if your curl header and library files are in 290# /foo/bar/include and /foo/bar/lib directories. 291AC_ARG_WITH(curl, 292AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)]) 293AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]), 294GIT_PARSE_WITH(curl)) 295# 296# Define NO_EXPAT if you do not have expat installed. git-http-push is 297# not built, and you cannot push using http:// and https:// transports. 298# 299# Define EXPATDIR=/foo/bar if your expat header and library files are in 300# /foo/bar/include and /foo/bar/lib directories. 301AC_ARG_WITH(expat, 302AS_HELP_STRING([--with-expat], 303[support git-push using http:// and https:// transports via WebDAV (default is YES)]) 304AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]), 305GIT_PARSE_WITH(expat)) 306# 307# Define NO_FINK if you are building on Darwin/Mac OS X, have Fink 308# installed in /sw, but don't want GIT to link against any libraries 309# installed there. If defined you may specify your own (or Fink's) 310# include directories and library directories by defining CFLAGS 311# and LDFLAGS appropriately. 312# 313# Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X, 314# have DarwinPorts installed in /opt/local, but don't want GIT to 315# link against any libraries installed there. If defined you may 316# specify your own (or DarwinPort's) include directories and 317# library directories by defining CFLAGS and LDFLAGS appropriately. 318# 319# Define NO_MMAP if you want to avoid mmap. 320# 321# Define NO_ICONV if your libc does not properly support iconv. 322AC_ARG_WITH(iconv, 323AS_HELP_STRING([--without-iconv], 324[if your architecture doesn't properly support iconv]) 325AS_HELP_STRING([--with-iconv=PATH], 326[PATH is prefix for libiconv library and headers]) 327AS_HELP_STRING([], 328[used only if you need linking with libiconv]), 329GIT_PARSE_WITH(iconv)) 330 331## --enable-FEATURE[=ARG] and --disable-FEATURE 332# 333# Define USE_NSEC below if you want git to care about sub-second file mtimes 334# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and 335# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely 336# randomly break unless your underlying filesystem supports those sub-second 337# times (my ext3 doesn't). 338# 339# Define USE_STDEV below if you want git to care about the underlying device 340# change being considered an inode change from the update-index perspective. 341 342# 343# Allow user to set ETC_GITCONFIG variable 344GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG, 345 Use VALUE instead of /etc/gitconfig as the 346 global git configuration file. 347 If VALUE is not fully qualified it will be interpreted 348 as a path relative to the computed prefix at runtime.) 349 350# 351# Allow user to set ETC_GITATTRIBUTES variable 352GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES, 353 Use VALUE instead of /etc/gitattributes as the 354 global git attributes file. 355 If VALUE is not fully qualified it will be interpreted 356 as a path relative to the computed prefix at runtime.) 357 358# 359# Allow user to set the default pager 360GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER, 361 Use VALUE as the fall-back pager instead of 'less'. 362 This is used by things like 'git log' when the user 363 does not specify a pager to use through alternate 364 methods. eg: /usr/bin/pager) 365# 366# Allow user to set the default editor 367GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR, 368 Use VALUE as the fall-back editor instead of 'vi'. 369 This is used by things like 'git commit' when the user 370 does not specify a preferred editor through other 371 methods. eg: /usr/bin/editor) 372 373# 374# Define SHELL_PATH to provide path to shell. 375GIT_ARG_SET_PATH(shell) 376# 377# Define PERL_PATH to provide path to Perl. 378GIT_ARG_SET_PATH(perl) 379# 380# Define PYTHON_PATH to provide path to Python. 381GIT_ARG_SET_PATH(python, allow-without) 382# 383# Define ZLIB_PATH to provide path to zlib. 384GIT_ARG_SET_PATH(zlib) 385# 386# Declare the with-tcltk/without-tcltk options. 387AC_ARG_WITH(tcltk, 388AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)]) 389AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.]) 390AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if]) 391AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]), 392GIT_PARSE_WITH(tcltk)) 393# 394 395 396## Checks for programs. 397AC_MSG_NOTICE([CHECKS for programs]) 398# 399AC_PROG_CC([cc gcc]) 400AC_C_INLINE 401case $ac_cv_c_inline in 402 inline | yes | no) INLINE='';; 403 *) INLINE=$ac_cv_c_inline ;; 404esac 405GIT_CONF_SUBST([INLINE]) 406 407# which switch to pass runtime path to dynamic libraries to the linker 408AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [ 409 SAVE_LDFLAGS="${LDFLAGS}" 410 LDFLAGS="${SAVE_LDFLAGS} -R /" 411 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no]) 412 LDFLAGS="${SAVE_LDFLAGS}" 413]) 414if test "$git_cv_ld_dashr" = "yes"; then 415 CC_LD_DYNPATH=-R 416else 417 AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [ 418 SAVE_LDFLAGS="${LDFLAGS}" 419 LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/" 420 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no]) 421 LDFLAGS="${SAVE_LDFLAGS}" 422 ]) 423 if test "$git_cv_ld_wl_rpath" = "yes"; then 424 CC_LD_DYNPATH=-Wl,-rpath, 425 else 426 AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [ 427 SAVE_LDFLAGS="${LDFLAGS}" 428 LDFLAGS="${SAVE_LDFLAGS} -rpath /" 429 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no]) 430 LDFLAGS="${SAVE_LDFLAGS}" 431 ]) 432 if test "$git_cv_ld_rpath" = "yes"; then 433 CC_LD_DYNPATH=-rpath 434 else 435 CC_LD_DYNPATH= 436 AC_MSG_WARN([linker does not support runtime path to dynamic libraries]) 437 fi 438 fi 439fi 440GIT_CONF_SUBST([CC_LD_DYNPATH]) 441#AC_PROG_INSTALL # needs install-sh or install.sh in sources 442AC_CHECK_TOOLS(AR, [gar ar], :) 443AC_CHECK_PROGS(TAR, [gtar tar]) 444AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff]) 445# TCLTK_PATH will be set to some value if we want Tcl/Tk 446# or will be empty otherwise. 447if test -n "$NO_TCLTK"; then 448 TCLTK_PATH= 449else 450 if test "$with_tcltk" = ""; then 451 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'. 452 TCLTK_PATH=wish 453 elif test "$with_tcltk" = "yes"; then 454 # Tcl/Tk check requested. 455 AC_CHECK_PROGS(TCLTK_PATH, [wish], ) 456 else 457 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk]) 458 TCLTK_PATH="$with_tcltk" 459 fi 460fi 461GIT_CONF_SUBST([TCLTK_PATH]) 462AC_CHECK_PROGS(ASCIIDOC, [asciidoc]) 463if test -n "$ASCIIDOC"; then 464 AC_MSG_CHECKING([for asciidoc version]) 465 asciidoc_version=`$ASCIIDOC --version 2>/dev/null` 466 case "${asciidoc_version}" in 467 asciidoc' '8*) 468 AC_MSG_RESULT([${asciidoc_version}]) 469 ;; 470 *) 471 AC_MSG_RESULT([${asciidoc_version} (unknown)]) 472 ;; 473 esac 474fi 475 476if grep -a ascii configure.ac >/dev/null; then 477 AC_MSG_RESULT([Using 'grep -a' for sane_grep]) 478 SANE_TEXT_GREP=-a 479else 480 SANE_TEXT_GREP= 481fi 482GIT_CONF_SUBST([SANE_TEXT_GREP]) 483 484## Checks for libraries. 485AC_MSG_NOTICE([CHECKS for libraries]) 486# 487# Define NO_OPENSSL environment variable if you do not have OpenSSL. 488# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin). 489 490GIT_STASH_FLAGS($OPENSSLDIR) 491 492AC_CHECK_LIB([crypto], [SHA1_Init], 493[NEEDS_SSL_WITH_CRYPTO=], 494[AC_CHECK_LIB([ssl], [SHA1_Init], 495 [NEEDS_SSL_WITH_CRYPTO=YesPlease NO_OPENSSL=], 496 [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])]) 497 498GIT_UNSTASH_FLAGS($OPENSSLDIR) 499 500GIT_CONF_SUBST([NEEDS_SSL_WITH_CRYPTO]) 501GIT_CONF_SUBST([NO_OPENSSL]) 502 503# 504# Define USE_LIBPCRE if you have and want to use libpcre. Various 505# commands such as log and grep offer runtime options to use 506# Perl-compatible regular expressions instead of standard or extended 507# POSIX regular expressions. 508# 509 510if test -n "$USE_LIBPCRE"; then 511 512GIT_STASH_FLAGS($LIBPCREDIR) 513 514AC_CHECK_LIB([pcre], [pcre_version], 515[USE_LIBPCRE=YesPlease], 516[USE_LIBPCRE=]) 517 518GIT_UNSTASH_FLAGS($LIBPCREDIR) 519 520GIT_CONF_SUBST([USE_LIBPCRE]) 521 522fi 523 524# 525# Define NO_CURL if you do not have libcurl installed. git-http-pull and 526# git-http-push are not built, and you cannot use http:// and https:// 527# transports. 528 529GIT_STASH_FLAGS($CURLDIR) 530 531AC_CHECK_LIB([curl], [curl_global_init], 532[NO_CURL=], 533[NO_CURL=YesPlease]) 534 535GIT_UNSTASH_FLAGS($CURLDIR) 536 537GIT_CONF_SUBST([NO_CURL]) 538 539if test -z "$NO_CURL"; then 540 541AC_CHECK_PROG([CURL_CONFIG], [curl-config], 542[curl-config], 543[no]) 544 545if test $CURL_CONFIG != no; then 546 GIT_CONF_SUBST([CURL_CONFIG]) 547 if test -z "${NO_OPENSSL}"; then 548 AC_MSG_CHECKING([if Curl supports SSL]) 549 if test $(curl-config --features|grep SSL) = SSL; then 550 NEEDS_SSL_WITH_CURL=YesPlease 551 AC_MSG_RESULT([yes]) 552 else 553 NEEDS_SSL_WITH_CURL= 554 AC_MSG_RESULT([no]) 555 fi 556 GIT_CONF_SUBST([NEEDS_SSL_WITH_CURL]) 557 fi 558fi 559 560fi 561 562 563# 564# Define NO_EXPAT if you do not have expat installed. git-http-push is 565# not built, and you cannot push using http:// and https:// transports. 566 567GIT_STASH_FLAGS($EXPATDIR) 568 569AC_CHECK_LIB([expat], [XML_ParserCreate], 570[NO_EXPAT=], 571[NO_EXPAT=YesPlease]) 572 573GIT_UNSTASH_FLAGS($EXPATDIR) 574 575GIT_CONF_SUBST([NO_EXPAT]) 576 577# 578# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and 579# some Solaris installations). 580# Define NO_ICONV if neither libc nor libiconv support iconv. 581 582if test -z "$NO_ICONV"; then 583 584GIT_STASH_FLAGS($ICONVDIR) 585 586AC_DEFUN([ICONVTEST_SRC], 587[AC_LANG_PROGRAM([#include <iconv.h>], 588 [iconv_open("", "");])]) 589 590if test -n "$ICONVDIR"; then 591 lib_order="-liconv -lc" 592else 593 lib_order="-lc -liconv" 594fi 595 596NO_ICONV=YesPlease 597 598for l in $lib_order; do 599 if test "$l" = "-liconv"; then 600 NEEDS_LIBICONV=YesPlease 601 else 602 NEEDS_LIBICONV= 603 fi 604 605 old_LIBS="$LIBS" 606 LIBS="$LIBS $l" 607 AC_MSG_CHECKING([for iconv in $l]) 608 AC_LINK_IFELSE([ICONVTEST_SRC], 609 [AC_MSG_RESULT([yes]) 610 NO_ICONV= 611 break], 612 [AC_MSG_RESULT([no])]) 613 LIBS="$old_LIBS" 614done 615 616#in case of break 617LIBS="$old_LIBS" 618 619GIT_UNSTASH_FLAGS($ICONVDIR) 620 621GIT_CONF_SUBST([NEEDS_LIBICONV]) 622GIT_CONF_SUBST([NO_ICONV]) 623 624if test -n "$NO_ICONV"; then 625 NEEDS_LIBICONV= 626fi 627 628fi 629 630# 631# Define NO_DEFLATE_BOUND if deflateBound is missing from zlib. 632 633GIT_STASH_FLAGS($ZLIB_PATH) 634 635AC_DEFUN([ZLIBTEST_SRC], [ 636AC_LANG_PROGRAM([#include <zlib.h>], 637 [deflateBound(0, 0);])]) 638AC_MSG_CHECKING([for deflateBound in -lz]) 639old_LIBS="$LIBS" 640LIBS="$LIBS -lz" 641AC_LINK_IFELSE([ZLIBTEST_SRC], 642 [AC_MSG_RESULT([yes])], 643 [AC_MSG_RESULT([no]) 644 NO_DEFLATE_BOUND=yes]) 645LIBS="$old_LIBS" 646 647GIT_UNSTASH_FLAGS($ZLIB_PATH) 648 649GIT_CONF_SUBST([NO_DEFLATE_BOUND]) 650 651# 652# Define NEEDS_SOCKET if linking with libc is not enough (SunOS, 653# Patrick Mauritz). 654AC_CHECK_LIB([c], [socket], 655[NEEDS_SOCKET=], 656[NEEDS_SOCKET=YesPlease]) 657GIT_CONF_SUBST([NEEDS_SOCKET]) 658test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket" 659 660# 661# The next few tests will define NEEDS_RESOLV if linking with 662# libresolv provides some of the functions we would normally get 663# from libc. 664NEEDS_RESOLV= 665# 666# Define NO_INET_NTOP if linking with -lresolv is not enough. 667# Solaris 2.7 in particular hos inet_ntop in -lresolv. 668NO_INET_NTOP= 669AC_CHECK_FUNC([inet_ntop], 670 [], 671 [AC_CHECK_LIB([resolv], [inet_ntop], 672 [NEEDS_RESOLV=YesPlease], 673 [NO_INET_NTOP=YesPlease]) 674]) 675GIT_CONF_SUBST([NO_INET_NTOP]) 676# 677# Define NO_INET_PTON if linking with -lresolv is not enough. 678# Solaris 2.7 in particular hos inet_pton in -lresolv. 679NO_INET_PTON= 680AC_CHECK_FUNC([inet_pton], 681 [], 682 [AC_CHECK_LIB([resolv], [inet_pton], 683 [NEEDS_RESOLV=YesPlease], 684 [NO_INET_PTON=YesPlease]) 685]) 686GIT_CONF_SUBST([NO_INET_PTON]) 687# 688# Define NO_HSTRERROR if linking with -lresolv is not enough. 689# Solaris 2.6 in particular has no hstrerror, even in -lresolv. 690NO_HSTRERROR= 691AC_CHECK_FUNC([hstrerror], 692 [], 693 [AC_CHECK_LIB([resolv], [hstrerror], 694 [NEEDS_RESOLV=YesPlease], 695 [NO_HSTRERROR=YesPlease]) 696]) 697GIT_CONF_SUBST([NO_HSTRERROR]) 698 699dnl This must go after all the possible places for its initialization, 700dnl in the AC_CHECK_FUNC invocations above. 701GIT_CONF_SUBST([NEEDS_RESOLV]) 702# 703# If any of the above tests determined that -lresolv is needed at 704# build-time, also set it here for remaining configure-time checks. 705test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv" 706 707AC_CHECK_LIB([c], [basename], 708[NEEDS_LIBGEN=], 709[NEEDS_LIBGEN=YesPlease]) 710GIT_CONF_SUBST([NEEDS_LIBGEN]) 711test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen" 712 713AC_CHECK_LIB([c], [gettext], 714[LIBC_CONTAINS_LIBINTL=YesPlease], 715[LIBC_CONTAINS_LIBINTL=]) 716GIT_CONF_SUBST([LIBC_CONTAINS_LIBINTL]) 717 718# 719# Define NO_GETTEXT if you don't want Git output to be translated. 720# A translated Git requires GNU libintl or another gettext implementation 721AC_CHECK_HEADER([libintl.h], 722[NO_GETTEXT=], 723[NO_GETTEXT=YesPlease]) 724GIT_CONF_SUBST([NO_GETTEXT]) 725 726if test -z "$NO_GETTEXT"; then 727 test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl" 728fi 729 730## Checks for header files. 731AC_MSG_NOTICE([CHECKS for header files]) 732# 733# Define NO_SYS_SELECT_H if you don't have sys/select.h. 734AC_CHECK_HEADER([sys/select.h], 735[NO_SYS_SELECT_H=], 736[NO_SYS_SELECT_H=UnfortunatelyYes]) 737GIT_CONF_SUBST([NO_SYS_SELECT_H]) 738# 739# Define NO_SYS_POLL_H if you don't have sys/poll.h 740AC_CHECK_HEADER([sys/poll.h], 741[NO_SYS_POLL_H=], 742[NO_SYS_POLL_H=UnfortunatelyYes]) 743GIT_CONF_SUBST([NO_SYS_POLL_H]) 744# 745# Define NO_INTTYPES_H if you don't have inttypes.h 746AC_CHECK_HEADER([inttypes.h], 747[NO_INTTYPES_H=], 748[NO_INTTYPES_H=UnfortunatelyYes]) 749GIT_CONF_SUBST([NO_INTTYPES_H]) 750# 751# Define OLD_ICONV if your library has an old iconv(), where the second 752# (input buffer pointer) parameter is declared with type (const char **). 753AC_DEFUN([OLDICONVTEST_SRC], [ 754AC_LANG_PROGRAM([[ 755#include <iconv.h> 756 757extern size_t iconv(iconv_t cd, 758 char **inbuf, size_t *inbytesleft, 759 char **outbuf, size_t *outbytesleft); 760]], [])]) 761 762GIT_STASH_FLAGS($ICONVDIR) 763 764AC_MSG_CHECKING([for old iconv()]) 765AC_COMPILE_IFELSE([OLDICONVTEST_SRC], 766 [AC_MSG_RESULT([no])], 767 [AC_MSG_RESULT([yes]) 768 OLD_ICONV=UnfortunatelyYes]) 769 770GIT_UNSTASH_FLAGS($ICONVDIR) 771 772GIT_CONF_SUBST([OLD_ICONV]) 773 774## Checks for typedefs, structures, and compiler characteristics. 775AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics]) 776# 777TYPE_SOCKLEN_T 778case $ac_cv_type_socklen_t in 779 yes) SOCKLEN_T='';; 780 *) SOCKLEN_T=$git_cv_socklen_t_equiv;; 781esac 782GIT_CONF_SUBST([SOCKLEN_T]) 783 784# 785# Define NO_STRUCT_ITIMERVAL if you don't have struct itimerval. 786AC_CHECK_TYPES([struct itimerval], 787[NO_STRUCT_ITIMERVAL=], 788[NO_STRUCT_ITIMERVAL=UnfortunatelyYes], 789[#include <sys/time.h>]) 790GIT_CONF_SUBST([NO_STRUCT_ITIMERVAL]) 791# 792# Define USE_ST_TIMESPEC=YesPlease when stat.st_mtimespec.tv_nsec exists. 793# Define NO_NSEC=YesPlease when neither stat.st_mtim.tv_nsec nor 794# stat.st_mtimespec.tv_nsec exists. 795AC_CHECK_MEMBER([struct stat.st_mtimespec.tv_nsec]) 796AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec]) 797if test x$ac_cv_member_struct_stat_st_mtimespec_tv_nsec = xyes; then 798 USE_ST_TIMESPEC=YesPlease 799 GIT_CONF_SUBST([USE_ST_TIMESPEC]) 800elif test x$ac_cv_member_struct_stat_st_mtim_tv_nsec != xyes; then 801 NO_NSEC=YesPlease 802 GIT_CONF_SUBST([NO_NSEC]) 803fi 804# 805# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks 806# d_type in struct dirent (latest Cygwin -- will be fixed soonish). 807AC_CHECK_MEMBER(struct dirent.d_type, 808[NO_D_TYPE_IN_DIRENT=], 809[NO_D_TYPE_IN_DIRENT=YesPlease], 810[#include <dirent.h>]) 811GIT_CONF_SUBST([NO_D_TYPE_IN_DIRENT]) 812# 813# Define NO_GECOS_IN_PWENT if you don't have pw_gecos in struct passwd 814# in the C library. 815AC_CHECK_MEMBER(struct passwd.pw_gecos, 816[NO_GECOS_IN_PWENT=], 817[NO_GECOS_IN_PWENT=YesPlease], 818[#include <pwd.h>]) 819GIT_CONF_SUBST([NO_GECOS_IN_PWENT]) 820# 821# Define NO_SOCKADDR_STORAGE if your platform does not have struct 822# sockaddr_storage. 823AC_CHECK_TYPE(struct sockaddr_storage, 824[NO_SOCKADDR_STORAGE=], 825[NO_SOCKADDR_STORAGE=YesPlease],[ 826#include <sys/types.h> 827#include <sys/socket.h> 828]) 829GIT_CONF_SUBST([NO_SOCKADDR_STORAGE]) 830# 831# Define NO_IPV6 if you lack IPv6 support and getaddrinfo(). 832AC_CHECK_TYPE([struct addrinfo],[ 833 GIT_CHECK_FUNC([getaddrinfo], 834 [NO_IPV6=], 835 [NO_IPV6=YesPlease]) 836],[NO_IPV6=YesPlease],[ 837#include <sys/types.h> 838#include <sys/socket.h> 839#include <netdb.h> 840]) 841GIT_CONF_SUBST([NO_IPV6]) 842# 843# Define NO_REGEX if your C library lacks regex support with REG_STARTEND 844# feature. 845AC_CACHE_CHECK([whether the platform regex supports REG_STARTEND], 846 [ac_cv_c_regex_with_reg_startend], [ 847AC_EGREP_CPP(yippeeyeswehaveit, 848 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT 849#include <regex.h> 850], 851[#ifdef REG_STARTEND 852yippeeyeswehaveit 853#endif 854]), 855 [ac_cv_c_regex_with_reg_startend=yes], 856 [ac_cv_c_regex_with_reg_startend=no]) 857]) 858if test $ac_cv_c_regex_with_reg_startend = yes; then 859 NO_REGEX= 860else 861 NO_REGEX=YesPlease 862fi 863GIT_CONF_SUBST([NO_REGEX]) 864# 865# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds 866# when attempting to read from an fopen'ed directory. 867AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory], 868 [ac_cv_fread_reads_directories], 869[ 870AC_RUN_IFELSE( 871 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], 872 [[char c; 873 FILE *f = fopen(".", "r"); 874 return f && fread(&c, 1, 1, f)]])], 875 [ac_cv_fread_reads_directories=no], 876 [ac_cv_fread_reads_directories=yes]) 877]) 878if test $ac_cv_fread_reads_directories = yes; then 879 FREAD_READS_DIRECTORIES=UnfortunatelyYes 880else 881 FREAD_READS_DIRECTORIES= 882fi 883GIT_CONF_SUBST([FREAD_READS_DIRECTORIES]) 884# 885# Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf() 886# or vsnprintf() return -1 instead of number of characters which would 887# have been written to the final string if enough space had been available. 888AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value], 889 [ac_cv_snprintf_returns_bogus], 890[ 891AC_RUN_IFELSE( 892 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT 893 #include "stdarg.h" 894 895 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...) 896 { 897 int ret; 898 va_list ap; 899 va_start(ap, format); 900 ret = vsnprintf(str, maxsize, format, ap); 901 va_end(ap); 902 return ret; 903 }], 904 [[char buf[6]; 905 if (test_vsnprintf(buf, 3, "%s", "12345") != 5 906 || strcmp(buf, "12")) return 1; 907 if (snprintf(buf, 3, "%s", "12345") != 5 908 || strcmp(buf, "12")) return 1]])], 909 [ac_cv_snprintf_returns_bogus=no], 910 [ac_cv_snprintf_returns_bogus=yes]) 911]) 912if test $ac_cv_snprintf_returns_bogus = yes; then 913 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes 914else 915 SNPRINTF_RETURNS_BOGUS= 916fi 917GIT_CONF_SUBST([SNPRINTF_RETURNS_BOGUS]) 918# 919# Define NEEDS_MODE_TRANSLATION if your OS strays from the typical file type 920# bits in mode values. 921AC_CACHE_CHECK([whether the platform uses typical file type bits], 922 [ac_cv_sane_mode_bits], [ 923AC_EGREP_CPP(yippeeyeswehaveit, 924 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], 925[#if S_IFMT == 0170000 && \ 926 S_IFREG == 0100000 && S_IFDIR == 0040000 && S_IFLNK == 0120000 && \ 927 S_IFBLK == 0060000 && S_IFCHR == 0020000 && \ 928 S_IFIFO == 0010000 && S_IFSOCK == 0140000 929yippeeyeswehaveit 930#endif 931]), 932 [ac_cv_sane_mode_bits=yes], 933 [ac_cv_sane_mode_bits=no]) 934]) 935if test $ac_cv_sane_mode_bits = yes; then 936 NEEDS_MODE_TRANSLATION= 937else 938 NEEDS_MODE_TRANSLATION=UnfortunatelyYes 939fi 940GIT_CONF_SUBST([NEEDS_MODE_TRANSLATION]) 941 942 943## Checks for library functions. 944## (in default C library and libraries checked by AC_CHECK_LIB) 945AC_MSG_NOTICE([CHECKS for library functions]) 946# 947# Define NO_LIBGEN_H if you don't have libgen.h. 948AC_CHECK_HEADER([libgen.h], 949[NO_LIBGEN_H=], 950[NO_LIBGEN_H=YesPlease]) 951GIT_CONF_SUBST([NO_LIBGEN_H]) 952# 953# Define HAVE_PATHS_H if you have paths.h. 954AC_CHECK_HEADER([paths.h], 955[HAVE_PATHS_H=YesPlease], 956[HAVE_PATHS_H=]) 957GIT_CONF_SUBST([HAVE_PATHS_H]) 958# 959# Define HAVE_LIBCHARSET_H if have libcharset.h 960AC_CHECK_HEADER([libcharset.h], 961[HAVE_LIBCHARSET_H=YesPlease], 962[HAVE_LIBCHARSET_H=]) 963GIT_CONF_SUBST([HAVE_LIBCHARSET_H]) 964# 965# Define HAVE_STRINGS_H if you have strings.h 966AC_CHECK_HEADER([strings.h], 967[HAVE_STRINGS_H=YesPlease], 968[HAVE_STRINGS_H=]) 969GIT_CONF_SUBST([HAVE_STRINGS_H]) 970# Define CHARSET_LIB if libiconv does not export the locale_charset symbol 971# and libcharset does 972CHARSET_LIB= 973AC_CHECK_LIB([iconv], [locale_charset], 974 [CHARSET_LIB=-liconv], 975 [AC_CHECK_LIB([charset], [locale_charset], 976 [CHARSET_LIB=-lcharset])]) 977GIT_CONF_SUBST([CHARSET_LIB]) 978# 979# Define HAVE_CLOCK_GETTIME=YesPlease if clock_gettime is available. 980GIT_CHECK_FUNC(clock_gettime, 981 [HAVE_CLOCK_GETTIME=YesPlease], 982 [HAVE_CLOCK_GETTIME=]) 983GIT_CONF_SUBST([HAVE_CLOCK_GETTIME]) 984 985AC_DEFUN([CLOCK_MONOTONIC_SRC], [ 986AC_LANG_PROGRAM([[ 987#include <time.h> 988clockid_t id = CLOCK_MONOTONIC; 989]])]) 990 991# 992# Define HAVE_CLOCK_MONOTONIC=YesPlease if CLOCK_MONOTONIC is available. 993AC_MSG_CHECKING([for CLOCK_MONOTONIC]) 994AC_COMPILE_IFELSE([CLOCK_MONOTONIC_SRC], 995 [AC_MSG_RESULT([yes]) 996 HAVE_CLOCK_MONOTONIC=YesPlease], 997 [AC_MSG_RESULT([no]) 998 HAVE_CLOCK_MONOTONIC=]) 999GIT_CONF_SUBST([HAVE_CLOCK_MONOTONIC])1000#1001# Define NO_SETITIMER if you don't have setitimer.1002GIT_CHECK_FUNC(setitimer,1003[NO_SETITIMER=],1004[NO_SETITIMER=YesPlease])1005GIT_CONF_SUBST([NO_SETITIMER])1006#1007# Define NO_STRCASESTR if you don't have strcasestr.1008GIT_CHECK_FUNC(strcasestr,1009[NO_STRCASESTR=],1010[NO_STRCASESTR=YesPlease])1011GIT_CONF_SUBST([NO_STRCASESTR])1012#1013# Define NO_MEMMEM if you don't have memmem.1014GIT_CHECK_FUNC(memmem,1015[NO_MEMMEM=],1016[NO_MEMMEM=YesPlease])1017GIT_CONF_SUBST([NO_MEMMEM])1018#1019# Define NO_STRLCPY if you don't have strlcpy.1020GIT_CHECK_FUNC(strlcpy,1021[NO_STRLCPY=],1022[NO_STRLCPY=YesPlease])1023GIT_CONF_SUBST([NO_STRLCPY])1024#1025# Define NO_UINTMAX_T if your platform does not have uintmax_t1026AC_CHECK_TYPE(uintmax_t,1027[NO_UINTMAX_T=],1028[NO_UINTMAX_T=YesPlease],[1029#include <inttypes.h>1030])1031GIT_CONF_SUBST([NO_UINTMAX_T])1032#1033# Define NO_STRTOUMAX if you don't have strtoumax in the C library.1034GIT_CHECK_FUNC(strtoumax,1035[NO_STRTOUMAX=],1036[NO_STRTOUMAX=YesPlease])1037GIT_CONF_SUBST([NO_STRTOUMAX])1038#1039# Define NO_SETENV if you don't have setenv in the C library.1040GIT_CHECK_FUNC(setenv,1041[NO_SETENV=],1042[NO_SETENV=YesPlease])1043GIT_CONF_SUBST([NO_SETENV])1044#1045# Define NO_UNSETENV if you don't have unsetenv in the C library.1046GIT_CHECK_FUNC(unsetenv,1047[NO_UNSETENV=],1048[NO_UNSETENV=YesPlease])1049GIT_CONF_SUBST([NO_UNSETENV])1050#1051# Define NO_MKDTEMP if you don't have mkdtemp in the C library.1052GIT_CHECK_FUNC(mkdtemp,1053[NO_MKDTEMP=],1054[NO_MKDTEMP=YesPlease])1055GIT_CONF_SUBST([NO_MKDTEMP])1056#1057# Define NO_INITGROUPS if you don't have initgroups in the C library.1058GIT_CHECK_FUNC(initgroups,1059[NO_INITGROUPS=],1060[NO_INITGROUPS=YesPlease])1061GIT_CONF_SUBST([NO_INITGROUPS])1062#1063# Define HAVE_GETDELIM if you have getdelim in the C library.1064GIT_CHECK_FUNC(getdelim,1065[HAVE_GETDELIM=YesPlease],1066[HAVE_GETDELIM=])1067GIT_CONF_SUBST([HAVE_GETDELIM])1068#1069#1070# Define NO_MMAP if you want to avoid mmap.1071#1072# Define NO_ICONV if your libc does not properly support iconv.10731074AC_DEFUN([BSD_SYSCTL_SRC], [1075AC_LANG_PROGRAM([[1076#include <stddef.h>1077#include <sys/types.h>1078#include <sys/sysctl.h>1079]],[[1080int val, mib[2];1081size_t len;1082mib[0] = CTL_HW;1083mib[1] = 1;1084len = sizeof(val);1085return sysctl(mib, 2, &val, &len, NULL, 0) ? 1 : 0;1086]])])10871088#1089# Define HAVE_BSD_SYSCTL=YesPlease if a BSD-compatible sysctl function is available.1090AC_MSG_CHECKING([for BSD sysctl])1091AC_COMPILE_IFELSE([BSD_SYSCTL_SRC],1092 [AC_MSG_RESULT([yes])1093 HAVE_BSD_SYSCTL=YesPlease],1094 [AC_MSG_RESULT([no])1095 HAVE_BSD_SYSCTL=])1096GIT_CONF_SUBST([HAVE_BSD_SYSCTL])10971098## Other checks.1099# Define USE_PIC if you need the main git objects to be built with -fPIC1100# in order to build and link perl/Git.so. x86-64 seems to need this.1101#1102# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.1103# Enable it on Windows. By default, symrefs are still used.1104#1105# Define NO_PTHREADS if we do not have pthreads.1106#1107# Define PTHREAD_LIBS to the linker flag used for Pthread support.1108AC_DEFUN([PTHREADTEST_SRC], [1109AC_LANG_PROGRAM([[1110#include <pthread.h>1111static void *noop(void *ignore) { return ignore; }1112]], [[1113 pthread_mutex_t test_mutex;1114 pthread_key_t test_key;1115 pthread_t th;1116 int retcode = 0;1117 void *ret = (void *)0;1118 retcode |= pthread_key_create(&test_key, (void *)0);1119 retcode |= pthread_mutex_init(&test_mutex,(void *)0);1120 retcode |= pthread_mutex_lock(&test_mutex);1121 retcode |= pthread_mutex_unlock(&test_mutex);1122 retcode |= pthread_create(&th, ret, noop, ret);1123 retcode |= pthread_join(th, &ret);1124 return retcode;1125]])])11261127dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(1128dnl [[#include <pthread.h>]],1129dnl [[pthread_mutex_t test_mutex;]]1130dnl )])11311132NO_PTHREADS=UnfortunatelyYes1133PTHREAD_LIBS=11341135if test -n "$USER_NOPTHREAD"; then1136 AC_MSG_NOTICE([Skipping POSIX Threads at user request.])1137# handle these separately since PTHREAD_CFLAGS could be '-lpthreads1138# -D_REENTRANT' or some such.1139elif test -z "$PTHREAD_CFLAGS"; then1140 threads_found=no1141 # Attempt to compile and link some code using pthreads to determine1142 # required linker flags. The order is somewhat important here: We1143 # first try it without any extra flags, to catch systems where1144 # pthreads are part of the C library, then go on testing various other1145 # flags. We do so to avoid false positives. For example, on Mac OS X1146 # pthreads are part of the C library; moreover, the compiler allows us1147 # to add "-mt" to the CFLAGS (although it will do nothing except1148 # trigger a warning about an unused flag). Hence if we checked for1149 # "-mt" before "" we would end up picking it. But unfortunately this1150 # would then trigger compiler warnings on every single file we compile.1151 for opt in "" -mt -pthread -lpthread; do1152 old_CFLAGS="$CFLAGS"1153 old_LIBS="$LIBS"1154 case "$opt" in1155 -l*) LIBS="$opt $LIBS" ;;1156 *) CFLAGS="$opt $CFLAGS" ;;1157 esac11581159 AC_MSG_CHECKING([for POSIX Threads with '$opt'])1160 AC_LINK_IFELSE([PTHREADTEST_SRC],1161 [AC_MSG_RESULT([yes])1162 NO_PTHREADS=1163 PTHREAD_LIBS="$opt"1164 PTHREAD_CFLAGS="$opt"1165 threads_found=yes1166 break1167 ],1168 [AC_MSG_RESULT([no])])1169 CFLAGS="$old_CFLAGS"1170 LIBS="$old_LIBS"1171 done1172 if test $threads_found != yes; then1173 AC_CHECK_LIB([pthread], [pthread_create],1174 [PTHREAD_LIBS="-lpthread"],1175 [NO_PTHREADS=UnfortunatelyYes])1176 fi1177else1178 old_CFLAGS="$CFLAGS"1179 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"1180 AC_MSG_CHECKING([for POSIX Threads with '$PTHREAD_CFLAGS'])1181 AC_LINK_IFELSE([PTHREADTEST_SRC],1182 [AC_MSG_RESULT([yes])1183 NO_PTHREADS=1184 PTHREAD_LIBS="$PTHREAD_CFLAGS"1185 ],1186 [AC_MSG_RESULT([no])])11871188 CFLAGS="$old_CFLAGS"1189fi11901191CFLAGS="$old_CFLAGS"11921193GIT_CONF_SUBST([PTHREAD_CFLAGS])1194GIT_CONF_SUBST([PTHREAD_LIBS])1195GIT_CONF_SUBST([NO_PTHREADS])11961197## Output files1198AC_CONFIG_FILES(["${config_file}":"${config_in}"])1199AC_OUTPUT