1# -*- Autoconf -*- 2# Process this file with autoconf to produce a configure script. 3 4AC_PREREQ(2.59) 5AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org]) 6 7AC_CONFIG_SRCDIR([git.c]) 8 9config_file=config.mak.autogen 10config_append=config.mak.append 11config_in=config.mak.in 12 13echo "# ${config_append}. Generated by configure." > "${config_append}" 14 15 16## Definitions of macros 17# GIT_CONF_APPEND_LINE(LINE) 18# -------------------------- 19# Append LINE to file ${config_append} 20AC_DEFUN([GIT_CONF_APPEND_LINE], 21[echo "$1" >> "${config_append}"])# GIT_CONF_APPEND_LINE 22# 23# GIT_ARG_SET_PATH(PROGRAM) 24# ------------------------- 25# Provide --with-PROGRAM=PATH option to set PATH to PROGRAM 26AC_DEFUN([GIT_ARG_SET_PATH], 27[AC_ARG_WITH([$1], 28 [AS_HELP_STRING([--with-$1=PATH], 29 [provide PATH to $1])], 30 [GIT_CONF_APPEND_PATH($1)],[]) 31])# GIT_ARG_SET_PATH 32# 33# GIT_CONF_APPEND_PATH(PROGRAM) 34# ------------------------------ 35# Parse --with-PROGRAM=PATH option to set PROGRAM_PATH=PATH 36# Used by GIT_ARG_SET_PATH(PROGRAM) 37AC_DEFUN([GIT_CONF_APPEND_PATH], 38[PROGRAM=m4_toupper($1); \ 39if test "$withval" = "no"; then \ 40 AC_MSG_ERROR([You cannot use git without $1]); \ 41else \ 42 if test "$withval" = "yes"; then \ 43 AC_MSG_WARN([You should provide path for --with-$1=PATH]); \ 44 else \ 45 m4_toupper($1)_PATH=$withval; \ 46 AC_MSG_NOTICE([Setting m4_toupper($1)_PATH to $withval]); \ 47 GIT_CONF_APPEND_LINE(${PROGRAM}_PATH=$withval); \ 48 fi; \ 49fi; \ 50]) # GIT_CONF_APPEND_PATH 51# 52# GIT_PARSE_WITH(PACKAGE) 53# ----------------------- 54# For use in AC_ARG_WITH action-if-found, for packages default ON. 55# * Set NO_PACKAGE=YesPlease for --without-PACKAGE 56# * Set PACKAGEDIR=PATH for --with-PACKAGE=PATH 57# * Unset NO_PACKAGE for --with-PACKAGE without ARG 58AC_DEFUN([GIT_PARSE_WITH], 59[PACKAGE=m4_toupper($1); \ 60if test "$withval" = "no"; then \ 61 m4_toupper(NO_$1)=YesPlease; \ 62elif test "$withval" = "yes"; then \ 63 m4_toupper(NO_$1)=; \ 64else \ 65 m4_toupper(NO_$1)=; \ 66 m4_toupper($1)DIR=$withval; \ 67 AC_MSG_NOTICE([Setting m4_toupper($1)DIR to $withval]); \ 68 GIT_CONF_APPEND_LINE(${PACKAGE}DIR=$withval); \ 69fi \ 70])# GIT_PARSE_WITH 71 72dnl 73dnl GIT_CHECK_FUNC(FUNCTION, IFTRUE, IFFALSE) 74dnl ----------------------------------------- 75dnl Similar to AC_CHECK_FUNC, but on systems that do not generate 76dnl warnings for missing prototypes (e.g. FreeBSD when compiling without 77dnl -Wall), it does not work. By looking for function definition in 78dnl libraries, this problem can be worked around. 79AC_DEFUN([GIT_CHECK_FUNC],[AC_CHECK_FUNC([$1],[ 80 AC_SEARCH_LIBS([$1],, 81 [$2],[$3]) 82],[$3])]) 83 84dnl 85dnl GIT_STASH_FLAGS(BASEPATH_VAR) 86dnl ----------------------------- 87dnl Allow for easy stashing of LDFLAGS and CPPFLAGS before running 88dnl tests that may want to take user settings into account. 89AC_DEFUN([GIT_STASH_FLAGS],[ 90if test -n "$1"; then 91 old_CPPFLAGS="$CPPFLAGS" 92 old_LDFLAGS="$LDFLAGS" 93 CPPFLAGS="-I$1/include $CPPFLAGS" 94 LDFLAGS="-L$1/$lib $LDFLAGS" 95fi 96]) 97 98dnl 99dnl GIT_UNSTASH_FLAGS(BASEPATH_VAR) 100dnl ----------------------------- 101dnl Restore the stashed *FLAGS values. 102AC_DEFUN([GIT_UNSTASH_FLAGS],[ 103if test -n "$1"; then 104 CPPFLAGS="$old_CPPFLAGS" 105 LDFLAGS="$old_LDFLAGS" 106fi 107]) 108 109## Site configuration related to programs (before tests) 110## --with-PACKAGE[=ARG] and --without-PACKAGE 111# 112# Set lib to alternative name of lib directory (e.g. lib64) 113AC_ARG_WITH([lib], 114 [AS_HELP_STRING([--with-lib=ARG], 115 [ARG specifies alternative name for lib directory])], 116 [if test "$withval" = "no" || test "$withval" = "yes"; then \ 117 AC_MSG_WARN([You should provide name for --with-lib=ARG]); \ 118else \ 119 lib=$withval; \ 120 AC_MSG_NOTICE([Setting lib to '$lib']); \ 121 GIT_CONF_APPEND_LINE(lib=$withval); \ 122fi; \ 123],[]) 124 125if test -z "$lib"; then 126 AC_MSG_NOTICE([Setting lib to 'lib' (the default)]) 127 lib=lib 128fi 129 130## Site configuration (override autodetection) 131## --with-PACKAGE[=ARG] and --without-PACKAGE 132AC_MSG_NOTICE([CHECKS for site configuration]) 133# 134# Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability 135# tests. These tests take up a significant amount of the total test time 136# but are not needed unless you plan to talk to SVN repos. 137# 138# Define MOZILLA_SHA1 environment variable when running make to make use of 139# a bundled SHA1 routine coming from Mozilla. It is GPL'd and should be fast 140# on non-x86 architectures (e.g. PowerPC), while the OpenSSL version (default 141# choice) has very fast version optimized for i586. 142# 143# Define PPC_SHA1 environment variable when running make to make use of 144# a bundled SHA1 routine optimized for PowerPC. 145# 146# Define ARM_SHA1 environment variable when running make to make use of 147# a bundled SHA1 routine optimized for ARM. 148# 149# Define NO_OPENSSL environment variable if you do not have OpenSSL. 150# This also implies MOZILLA_SHA1. 151# 152# Define OPENSSLDIR=/foo/bar if your openssl header and library files are in 153# /foo/bar/include and /foo/bar/lib directories. 154AC_ARG_WITH(openssl, 155AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)]) 156AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]),\ 157GIT_PARSE_WITH(openssl)) 158# 159# Define NO_CURL if you do not have curl installed. git-http-pull and 160# git-http-push are not built, and you cannot use http:// and https:// 161# transports. 162# 163# Define CURLDIR=/foo/bar if your curl header and library files are in 164# /foo/bar/include and /foo/bar/lib directories. 165AC_ARG_WITH(curl, 166AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)]) 167AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]), 168GIT_PARSE_WITH(curl)) 169# 170# Define NO_EXPAT if you do not have expat installed. git-http-push is 171# not built, and you cannot push using http:// and https:// transports. 172# 173# Define EXPATDIR=/foo/bar if your expat header and library files are in 174# /foo/bar/include and /foo/bar/lib directories. 175AC_ARG_WITH(expat, 176AS_HELP_STRING([--with-expat], 177[support git-push using http:// and https:// transports via WebDAV (default is YES)]) 178AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]), 179GIT_PARSE_WITH(expat)) 180# 181# Define NO_FINK if you are building on Darwin/Mac OS X, have Fink 182# installed in /sw, but don't want GIT to link against any libraries 183# installed there. If defined you may specify your own (or Fink's) 184# include directories and library directories by defining CFLAGS 185# and LDFLAGS appropriately. 186# 187# Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X, 188# have DarwinPorts installed in /opt/local, but don't want GIT to 189# link against any libraries installed there. If defined you may 190# specify your own (or DarwinPort's) include directories and 191# library directories by defining CFLAGS and LDFLAGS appropriately. 192# 193# Define NO_MMAP if you want to avoid mmap. 194# 195# Define NO_ICONV if your libc does not properly support iconv. 196AC_ARG_WITH(iconv, 197AS_HELP_STRING([--without-iconv], 198[if your architecture doesn't properly support iconv]) 199AS_HELP_STRING([--with-iconv=PATH], 200[PATH is prefix for libiconv library and headers]) 201AS_HELP_STRING([], 202[used only if you need linking with libiconv]), 203GIT_PARSE_WITH(iconv)) 204 205## --enable-FEATURE[=ARG] and --disable-FEATURE 206# 207# Define USE_NSEC below if you want git to care about sub-second file mtimes 208# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and 209# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely 210# randomly break unless your underlying filesystem supports those sub-second 211# times (my ext3 doesn't). 212# 213# Define USE_STDEV below if you want git to care about the underlying device 214# change being considered an inode change from the update-index perspective. 215 216# 217# Define SHELL_PATH to provide path to shell. 218GIT_ARG_SET_PATH(shell) 219# 220# Define PERL_PATH to provide path to Perl. 221GIT_ARG_SET_PATH(perl) 222# 223# Define ZLIB_PATH to provide path to zlib. 224GIT_ARG_SET_PATH(zlib) 225# 226# Declare the with-tcltk/without-tcltk options. 227AC_ARG_WITH(tcltk, 228AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)]) 229AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.]) 230AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if]) 231AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),\ 232GIT_PARSE_WITH(tcltk)) 233# 234 235 236## Checks for programs. 237AC_MSG_NOTICE([CHECKS for programs]) 238# 239AC_PROG_CC([cc gcc]) 240# which switch to pass runtime path to dynamic libraries to the linker 241AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [ 242 SAVE_LDFLAGS="${LDFLAGS}" 243 LDFLAGS="${SAVE_LDFLAGS} -R /" 244 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no]) 245 LDFLAGS="${SAVE_LDFLAGS}" 246]) 247if test "$git_cv_ld_dashr" = "yes"; then 248 AC_SUBST(CC_LD_DYNPATH, [-R]) 249else 250 AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [ 251 SAVE_LDFLAGS="${LDFLAGS}" 252 LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/" 253 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no]) 254 LDFLAGS="${SAVE_LDFLAGS}" 255 ]) 256 if test "$git_cv_ld_wl_rpath" = "yes"; then 257 AC_SUBST(CC_LD_DYNPATH, [-Wl,-rpath,]) 258 else 259 AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [ 260 SAVE_LDFLAGS="${LDFLAGS}" 261 LDFLAGS="${SAVE_LDFLAGS} -rpath /" 262 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no]) 263 LDFLAGS="${SAVE_LDFLAGS}" 264 ]) 265 if test "$git_cv_ld_rpath" = "yes"; then 266 AC_SUBST(CC_LD_DYNPATH, [-rpath]) 267 else 268 AC_MSG_WARN([linker does not support runtime path to dynamic libraries]) 269 fi 270 fi 271fi 272#AC_PROG_INSTALL # needs install-sh or install.sh in sources 273AC_CHECK_TOOLS(AR, [gar ar], :) 274AC_CHECK_PROGS(TAR, [gtar tar]) 275# TCLTK_PATH will be set to some value if we want Tcl/Tk 276# or will be empty otherwise. 277if test -z "$NO_TCLTK"; then 278 if test "$with_tcltk" = ""; then 279 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'. 280 TCLTK_PATH=wish 281 AC_SUBST(TCLTK_PATH) 282 elif test "$with_tcltk" = "yes"; then 283 # Tcl/Tk check requested. 284 AC_CHECK_PROGS(TCLTK_PATH, [wish], ) 285 else 286 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk]) 287 TCLTK_PATH="$with_tcltk" 288 AC_SUBST(TCLTK_PATH) 289 fi 290fi 291AC_CHECK_PROGS(ASCIIDOC, [asciidoc]) 292if test -n "$ASCIIDOC"; then 293 AC_MSG_CHECKING([for asciidoc version]) 294 asciidoc_version=`$ASCIIDOC --version 2>/dev/null` 295 case "${asciidoc_version}" in 296 asciidoc' '8*) 297 ASCIIDOC8=YesPlease 298 AC_MSG_RESULT([${asciidoc_version} > 7]) 299 ;; 300 asciidoc' '7*) 301 ASCIIDOC8= 302 AC_MSG_RESULT([${asciidoc_version}]) 303 ;; 304 *) 305 ASCIIDOC8= 306 AC_MSG_RESULT([${asciidoc_version} (unknown)]) 307 ;; 308 esac 309fi 310AC_SUBST(ASCIIDOC8) 311 312 313## Checks for libraries. 314AC_MSG_NOTICE([CHECKS for libraries]) 315# 316# Define NO_OPENSSL environment variable if you do not have OpenSSL. 317# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin). 318 319GIT_STASH_FLAGS($OPENSSLDIR) 320 321AC_CHECK_LIB([crypto], [SHA1_Init], 322[NEEDS_SSL_WITH_CRYPTO=], 323[AC_CHECK_LIB([ssl], [SHA1_Init], 324 [NEEDS_SSL_WITH_CRYPTO=YesPlease 325 NEEDS_SSL_WITH_CRYPTO=], 326 [NO_OPENSSL=YesPlease])]) 327 328GIT_UNSTASH_FLAGS($OPENSSLDIR) 329 330AC_SUBST(NEEDS_SSL_WITH_CRYPTO) 331AC_SUBST(NO_OPENSSL) 332 333# 334# Define NO_CURL if you do not have libcurl installed. git-http-pull and 335# git-http-push are not built, and you cannot use http:// and https:// 336# transports. 337 338GIT_STASH_FLAGS($CURLDIR) 339 340AC_CHECK_LIB([curl], [curl_global_init], 341[NO_CURL=], 342[NO_CURL=YesPlease]) 343 344GIT_UNSTASH_FLAGS($CURLDIR) 345 346AC_SUBST(NO_CURL) 347 348# 349# Define NO_EXPAT if you do not have expat installed. git-http-push is 350# not built, and you cannot push using http:// and https:// transports. 351 352GIT_STASH_FLAGS($EXPATDIR) 353 354AC_CHECK_LIB([expat], [XML_ParserCreate], 355[NO_EXPAT=], 356[NO_EXPAT=YesPlease]) 357 358GIT_UNSTASH_FLAGS($EXPATDIR) 359 360AC_SUBST(NO_EXPAT) 361 362# 363# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and 364# some Solaris installations). 365# Define NO_ICONV if neither libc nor libiconv support iconv. 366 367GIT_STASH_FLAGS($ICONVDIR) 368 369AC_DEFUN([ICONVTEST_SRC], [ 370#include <iconv.h> 371 372int main(void) 373{ 374 iconv_open("", ""); 375 return 0; 376} 377]) 378 379if test -n "$ICONVDIR"; then 380 lib_order="-liconv -lc" 381else 382 lib_order="-lc -liconv" 383fi 384 385NO_ICONV=YesPlease 386 387for l in $lib_order; do 388 if test "$l" = "-liconv"; then 389 NEEDS_LIBICONV=YesPlease 390 else 391 NEEDS_LIBICONV= 392 fi 393 394 old_LIBS="$LIBS" 395 LIBS="$LIBS $l" 396 AC_MSG_CHECKING([for iconv in $l]) 397 AC_LINK_IFELSE(ICONVTEST_SRC, 398 [AC_MSG_RESULT([yes]) 399 NO_ICONV= 400 break], 401 [AC_MSG_RESULT([no])]) 402 LIBS="$old_LIBS" 403done 404 405#in case of break 406LIBS="$old_LIBS" 407 408GIT_UNSTASH_FLAGS($ICONVDIR) 409 410AC_SUBST(NEEDS_LIBICONV) 411AC_SUBST(NO_ICONV) 412 413# 414# Define NO_DEFLATE_BOUND if deflateBound is missing from zlib. 415 416GIT_STASH_FLAGS($ZLIB_PATH) 417 418AC_DEFUN([ZLIBTEST_SRC], [ 419#include <zlib.h> 420 421int main(void) 422{ 423 deflateBound(0, 0); 424 return 0; 425} 426]) 427AC_MSG_CHECKING([for deflateBound in -lz]) 428old_LIBS="$LIBS" 429LIBS="$LIBS -lz" 430AC_LINK_IFELSE(ZLIBTEST_SRC, 431 [AC_MSG_RESULT([yes])], 432 [AC_MSG_RESULT([no]) 433 NO_DEFLATE_BOUND=yes]) 434LIBS="$old_LIBS" 435 436GIT_UNSTASH_FLAGS($ZLIB_PATH) 437 438AC_SUBST(NO_DEFLATE_BOUND) 439 440# 441# Define NEEDS_SOCKET if linking with libc is not enough (SunOS, 442# Patrick Mauritz). 443AC_CHECK_LIB([c], [socket], 444[NEEDS_SOCKET=], 445[NEEDS_SOCKET=YesPlease]) 446AC_SUBST(NEEDS_SOCKET) 447test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket" 448 449 450## Checks for header files. 451AC_MSG_NOTICE([CHECKS for header files]) 452# 453# Define NO_SYS_SELECT_H if you don't have sys/select.h. 454AC_CHECK_HEADER([sys/select.h], 455[NO_SYS_SELECT_H=], 456[NO_SYS_SELECT_H=UnfortunatelyYes]) 457AC_SUBST(NO_SYS_SELECT_H) 458# 459# Define OLD_ICONV if your library has an old iconv(), where the second 460# (input buffer pointer) parameter is declared with type (const char **). 461AC_DEFUN([OLDICONVTEST_SRC], [[ 462#include <iconv.h> 463 464extern size_t iconv(iconv_t cd, 465 char **inbuf, size_t *inbytesleft, 466 char **outbuf, size_t *outbytesleft); 467 468int main(void) 469{ 470 return 0; 471} 472]]) 473 474GIT_STASH_FLAGS($ICONVDIR) 475 476AC_MSG_CHECKING([for old iconv()]) 477AC_COMPILE_IFELSE(OLDICONVTEST_SRC, 478 [AC_MSG_RESULT([no])], 479 [AC_MSG_RESULT([yes]) 480 OLD_ICONV=UnfortunatelyYes]) 481 482GIT_UNSTASH_FLAGS($ICONVDIR) 483 484AC_SUBST(OLD_ICONV) 485 486## Checks for typedefs, structures, and compiler characteristics. 487AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics]) 488# 489# Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent. 490AC_CHECK_MEMBER(struct dirent.d_ino, 491[NO_D_INO_IN_DIRENT=], 492[NO_D_INO_IN_DIRENT=YesPlease], 493[#include <dirent.h>]) 494AC_SUBST(NO_D_INO_IN_DIRENT) 495# 496# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks 497# d_type in struct dirent (latest Cygwin -- will be fixed soonish). 498AC_CHECK_MEMBER(struct dirent.d_type, 499[NO_D_TYPE_IN_DIRENT=], 500[NO_D_TYPE_IN_DIRENT=YesPlease], 501[#include <dirent.h>]) 502AC_SUBST(NO_D_TYPE_IN_DIRENT) 503# 504# Define NO_SOCKADDR_STORAGE if your platform does not have struct 505# sockaddr_storage. 506AC_CHECK_TYPE(struct sockaddr_storage, 507[NO_SOCKADDR_STORAGE=], 508[NO_SOCKADDR_STORAGE=YesPlease],[ 509#include <sys/types.h> 510#include <sys/socket.h> 511]) 512AC_SUBST(NO_SOCKADDR_STORAGE) 513# 514# Define NO_IPV6 if you lack IPv6 support and getaddrinfo(). 515AC_CHECK_TYPE([struct addrinfo],[ 516 GIT_CHECK_FUNC([getaddrinfo], 517 [NO_IPV6=], 518 [NO_IPV6=YesPlease]) 519],[NO_IPV6=YesPlease],[ 520#include <sys/types.h> 521#include <sys/socket.h> 522#include <netdb.h> 523]) 524AC_SUBST(NO_IPV6) 525# 526# Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.) 527# do not support the 'size specifiers' introduced by C99, namely ll, hh, 528# j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t). 529# some C compilers supported these specifiers prior to C99 as an extension. 530AC_CACHE_CHECK([whether formatted IO functions support C99 size specifiers], 531 [ac_cv_c_c99_format], 532[# Actually git uses only %z (%zu) in alloc.c, and %t (%td) in mktag.c 533AC_RUN_IFELSE( 534 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], 535 [[char buf[64]; 536 if (sprintf(buf, "%lld%hhd%jd%zd%td", (long long int)1, (char)2, (intmax_t)3, (size_t)4, (ptrdiff_t)5) != 5) 537 return 1; 538 else if (strcmp(buf, "12345")) 539 return 2;]])], 540 [ac_cv_c_c99_format=yes], 541 [ac_cv_c_c99_format=no]) 542]) 543if test $ac_cv_c_c99_format = no; then 544 NO_C99_FORMAT=YesPlease 545else 546 NO_C99_FORMAT= 547fi 548AC_SUBST(NO_C99_FORMAT) 549# 550# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds 551# when attempting to read from an fopen'ed directory. 552AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory], 553 [ac_cv_fread_reads_directories], 554[ 555AC_RUN_IFELSE( 556 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], 557 [[char c; 558 FILE *f = fopen(".", "r"); 559 return f && fread(&c, 1, 1, f)]])], 560 [ac_cv_fread_reads_directories=no], 561 [ac_cv_fread_reads_directories=yes]) 562]) 563if test $ac_cv_fread_reads_directories = yes; then 564 FREAD_READS_DIRECTORIES=UnfortunatelyYes 565else 566 FREAD_READS_DIRECTORIES= 567fi 568AC_SUBST(FREAD_READS_DIRECTORIES) 569# 570# Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf() 571# or vsnprintf() return -1 instead of number of characters which would 572# have been written to the final string if enough space had been available. 573AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value], 574 [ac_cv_snprintf_returns_bogus], 575[ 576AC_RUN_IFELSE( 577 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT 578 #include "stdarg.h" 579 580 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...) 581 { 582 int ret; 583 va_list ap; 584 va_start(ap, format); 585 ret = vsnprintf(str, maxsize, format, ap); 586 va_end(ap); 587 return ret; 588 }], 589 [[char buf[6]; 590 if (test_vsnprintf(buf, 3, "%s", "12345") != 5 591 || strcmp(buf, "12")) return 1; 592 if (snprintf(buf, 3, "%s", "12345") != 5 593 || strcmp(buf, "12")) return 1]])], 594 [ac_cv_snprintf_returns_bogus=no], 595 [ac_cv_snprintf_returns_bogus=yes]) 596]) 597if test $ac_cv_snprintf_returns_bogus = yes; then 598 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes 599else 600 SNPRINTF_RETURNS_BOGUS= 601fi 602AC_SUBST(SNPRINTF_RETURNS_BOGUS) 603 604 605## Checks for library functions. 606## (in default C library and libraries checked by AC_CHECK_LIB) 607AC_MSG_NOTICE([CHECKS for library functions]) 608# 609# Define NO_STRCASESTR if you don't have strcasestr. 610GIT_CHECK_FUNC(strcasestr, 611[NO_STRCASESTR=], 612[NO_STRCASESTR=YesPlease]) 613AC_SUBST(NO_STRCASESTR) 614# 615# Define NO_MEMMEM if you don't have memmem. 616GIT_CHECK_FUNC(memmem, 617[NO_MEMMEM=], 618[NO_MEMMEM=YesPlease]) 619AC_SUBST(NO_MEMMEM) 620# 621# Define NO_STRLCPY if you don't have strlcpy. 622GIT_CHECK_FUNC(strlcpy, 623[NO_STRLCPY=], 624[NO_STRLCPY=YesPlease]) 625AC_SUBST(NO_STRLCPY) 626# 627# Define NO_UINTMAX_T if your platform does not have uintmax_t 628AC_CHECK_TYPE(uintmax_t, 629[NO_UINTMAX_T=], 630[NO_UINTMAX_T=YesPlease],[ 631#include <inttypes.h> 632]) 633AC_SUBST(NO_UINTMAX_T) 634# 635# Define NO_STRTOUMAX if you don't have strtoumax in the C library. 636GIT_CHECK_FUNC(strtoumax, 637[NO_STRTOUMAX=], 638[NO_STRTOUMAX=YesPlease]) 639AC_SUBST(NO_STRTOUMAX) 640# 641# Define NO_SETENV if you don't have setenv in the C library. 642GIT_CHECK_FUNC(setenv, 643[NO_SETENV=], 644[NO_SETENV=YesPlease]) 645AC_SUBST(NO_SETENV) 646# 647# Define NO_UNSETENV if you don't have unsetenv in the C library. 648GIT_CHECK_FUNC(unsetenv, 649[NO_UNSETENV=], 650[NO_UNSETENV=YesPlease]) 651AC_SUBST(NO_UNSETENV) 652# 653# Define NO_MKDTEMP if you don't have mkdtemp in the C library. 654GIT_CHECK_FUNC(mkdtemp, 655[NO_MKDTEMP=], 656[NO_MKDTEMP=YesPlease]) 657AC_SUBST(NO_MKDTEMP) 658# 659# Define NO_MMAP if you want to avoid mmap. 660# 661# Define NO_ICONV if your libc does not properly support iconv. 662 663 664## Other checks. 665# Define USE_PIC if you need the main git objects to be built with -fPIC 666# in order to build and link perl/Git.so. x86-64 seems to need this. 667# 668# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link. 669# Enable it on Windows. By default, symrefs are still used. 670# 671# Define NO_PTHREADS if we do not have pthreads 672# 673# Define PTHREAD_LIBS to the linker flag used for Pthread support and define 674# THREADED_DELTA_SEARCH if Pthreads are available. 675AC_LANG_CONFTEST([AC_LANG_PROGRAM( 676 [[#include <pthread.h>]], 677 [[pthread_mutex_t test_mutex;]] 678)]) 679${CC} -pthread conftest.c -o conftest.o > /dev/null 2>&1 680if test $? -eq 0;then 681 PTHREAD_LIBS="-pthread" 682 THREADED_DELTA_SEARCH=YesPlease 683else 684 ${CC} -lpthread conftest.c -o conftest.o > /dev/null 2>&1 685 if test $? -eq 0;then 686 PTHREAD_LIBS="-lpthread" 687 THREADED_DELTA_SEARCH=YesPlease 688 else 689 NO_PTHREADS=UnfortunatelyYes 690 fi 691fi 692AC_SUBST(PTHREAD_LIBS) 693AC_SUBST(NO_PTHREADS) 694AC_SUBST(THREADED_DELTA_SEARCH) 695 696## Output files 697AC_CONFIG_FILES(["${config_file}":"${config_in}":"${config_append}"]) 698AC_OUTPUT 699 700 701## Cleanup 702rm -f "${config_append}"