1# -*- Autoconf -*- 2# Process this file with autoconf to produce a configure script. 3 4############################################################################### 5# 6# Author: Lasse Collin 7# 8# This file has been put into the public domain. 9# You can do whatever you want with this file. 10# 11############################################################################### 12 13# NOTE: Don't add useless checks. autoscan detects this and that, but don't 14# let it confuse you. For example, we don't care about checking for behavior 15# of malloc(), stat(), or lstat(), since we don't use those functions in 16# a way that would cause the problems the autoconf macros check. 17 18AC_PREREQ([2.52]) 19 20AC_INIT([XZ Utils], 5.0.0, [joerg@NetBSD.org], [xz], [http://tukaani.org/xz/]) 21AC_CONFIG_MACRO_DIR([m4]) 22AC_CONFIG_HEADER([config.h]) 23AC_CONFIG_AUX_DIR([../../gnu/dist/autoconf/config]) 24 25AC_CANONICAL_HOST 26AC_USE_SYSTEM_EXTENSIONS 27 28# We do some special things on Windows (32-bit or 64-bit) builds. 29case $host_os in 30 mingw* | cygwin*) is_w32=yes ;; 31 *) is_w32=no ;; 32esac 33AM_CONDITIONAL([COND_W32], [test "$is_w32" = yes]) 34 35# We need to use $EXEEXT with $(LN_S) when creating symlinks to 36# executables. Cygwin is an exception to this, since it is recommended 37# that symlinks don't have the .exe suffix. To make this work, we 38# define LN_EXEEXT. 39case $host_os in 40 cygwin) LN_EXEEXT= ;; 41 *) LN_EXEEXT='$(EXEEXT)' ;; 42esac 43AC_SUBST([LN_EXEEXT]) 44 45echo 46echo "Configure options:" 47AM_CFLAGS= 48 49 50############# 51# Debugging # 52############# 53 54AC_MSG_CHECKING([if debugging code should be compiled]) 55AC_ARG_ENABLE([debug], AS_HELP_STRING([--enable-debug], [Enable debugging code.]), 56 [], enable_debug=no) 57if test "x$enable_debug" = xyes; then 58 AC_MSG_RESULT([yes]) 59else 60 AC_DEFINE([NDEBUG], [1], [Define to 1 to disable debugging code.]) 61 AC_MSG_RESULT([no]) 62fi 63 64 65########### 66# Filters # 67########### 68 69m4_define([SUPPORTED_FILTERS], [lzma1,lzma2,delta,x86,powerpc,ia64,arm,armthumb,sparc])dnl 70m4_define([SIMPLE_FILTERS], [x86,powerpc,ia64,arm,armthumb,sparc]) 71m4_define([LZ_FILTERS], [lzma1,lzma2]) 72 73m4_foreach([NAME], [SUPPORTED_FILTERS], 74[enable_filter_[]NAME=no 75enable_encoder_[]NAME=no 76enable_decoder_[]NAME=no 77])dnl 78 79AC_MSG_CHECKING([which encoders to build]) 80AC_ARG_ENABLE([encoders], AS_HELP_STRING([--enable-encoders=LIST], 81 [Comma-separated list of encoders to build. Default=all. 82 Available encoders:] 83 m4_translit(m4_defn([SUPPORTED_FILTERS]), [,], [ ])), 84 [], [enable_encoders=SUPPORTED_FILTERS]) 85enable_encoders=`echo "$enable_encoders" | sed 's/,/ /g'` 86if test "x$enable_encoders" = xno || test "x$enable_encoders" = x; then 87 AC_MSG_RESULT([(none)]) 88else 89 for arg in $enable_encoders 90 do 91 case $arg in m4_foreach([NAME], [SUPPORTED_FILTERS], [ 92 NAME) 93 enable_filter_[]NAME=yes 94 enable_encoder_[]NAME=yes 95 AC_DEFINE(HAVE_ENCODER_[]m4_toupper(NAME), [1], 96 [Define to 1 if] NAME [encoder is enabled.]) 97 ;;]) 98 *) 99 AC_MSG_RESULT([]) 100 AC_MSG_ERROR([unknown filter: $arg]) 101 ;; 102 esac 103 done 104 AC_MSG_RESULT([$enable_encoders]) 105fi 106 107AC_MSG_CHECKING([which decoders to build]) 108AC_ARG_ENABLE([decoders], AS_HELP_STRING([--enable-decoders=LIST], 109 [Comma-separated list of decoders to build. Default=all. 110 Available decoders are the same as available encoders.]), 111 [], [enable_decoders=SUPPORTED_FILTERS]) 112enable_decoders=`echo "$enable_decoders" | sed 's/,/ /g'` 113if test "x$enable_decoders" = xno || test "x$enable_decoders" = x; then 114 AC_MSG_RESULT([(none)]) 115else 116 for arg in $enable_decoders 117 do 118 case $arg in m4_foreach([NAME], [SUPPORTED_FILTERS], [ 119 NAME) 120 enable_filter_[]NAME=yes 121 enable_decoder_[]NAME=yes 122 AC_DEFINE(HAVE_DECODER_[]m4_toupper(NAME), [1], 123 [Define to 1 if] NAME [decoder is enabled.]) 124 ;;]) 125 *) 126 AC_MSG_RESULT([]) 127 AC_MSG_ERROR([unknown filter: $arg]) 128 ;; 129 esac 130 done 131 132 # LZMA2 requires that LZMA1 is enabled. 133 test "x$enable_encoder_lzma2" = xyes && enable_encoder_lzma1=yes 134 test "x$enable_decoder_lzma2" = xyes && enable_decoder_lzma1=yes 135 136 AC_MSG_RESULT([$enable_decoders]) 137fi 138 139if test "x$enable_encoder_lzma2$enable_encoder_lzma1" = xyesno \ 140 || test "x$enable_decoder_lzma2$enable_decoder_lzma1" = xyesno; then 141 AC_MSG_ERROR([LZMA2 requires that LZMA1 is also enabled.]) 142fi 143 144AM_CONDITIONAL(COND_MAIN_ENCODER, test "x$enable_encoders" != xno && test "x$enable_encoders" != x) 145AM_CONDITIONAL(COND_MAIN_DECODER, test "x$enable_decoders" != xno && test "x$enable_decoders" != x) 146 147m4_foreach([NAME], [SUPPORTED_FILTERS], 148[AM_CONDITIONAL(COND_FILTER_[]m4_toupper(NAME), test "x$enable_filter_[]NAME" = xyes) 149AM_CONDITIONAL(COND_ENCODER_[]m4_toupper(NAME), test "x$enable_encoder_[]NAME" = xyes) 150AM_CONDITIONAL(COND_DECODER_[]m4_toupper(NAME), test "x$enable_decoder_[]NAME" = xyes) 151])dnl 152 153# The so called "simple filters" share common code. 154enable_filter_simple=no 155enable_encoder_simple=no 156enable_decoder_simple=no 157m4_foreach([NAME], [SIMPLE_FILTERS], 158[test "x$enable_filter_[]NAME" = xyes && enable_filter_simple=yes 159test "x$enable_encoder_[]NAME" = xyes && enable_encoder_simple=yes 160test "x$enable_decoder_[]NAME" = xyes && enable_decoder_simple=yes 161])dnl 162AM_CONDITIONAL(COND_FILTER_SIMPLE, test "x$enable_filter_simple" = xyes) 163AM_CONDITIONAL(COND_ENCODER_SIMPLE, test "x$enable_encoder_simple" = xyes) 164AM_CONDITIONAL(COND_DECODER_SIMPLE, test "x$enable_decoder_simple" = xyes) 165 166# LZ-based filters share common code. 167enable_filter_lz=no 168enable_encoder_lz=no 169enable_decoder_lz=no 170m4_foreach([NAME], [LZ_FILTERS], 171[test "x$enable_filter_[]NAME" = xyes && enable_filter_lz=yes 172test "x$enable_encoder_[]NAME" = xyes && enable_encoder_lz=yes 173test "x$enable_decoder_[]NAME" = xyes && enable_decoder_lz=yes 174])dnl 175AM_CONDITIONAL(COND_FILTER_LZ, test "x$enable_filter_lz" = xyes) 176AM_CONDITIONAL(COND_ENCODER_LZ, test "x$enable_encoder_lz" = xyes) 177AM_CONDITIONAL(COND_DECODER_LZ, test "x$enable_decoder_lz" = xyes) 178 179m4_foreach([NAME], [SUPPORTED_FILTERS], [ 180 AC_DEFINE(HAVE_ENCODER_[]m4_toupper(NAME), [1], 181 [Define to 1 if] NAME [encoder is enabled.]) 182 AC_DEFINE(HAVE_DECODER_[]m4_toupper(NAME), [1], 183 [Define to 1 if] NAME [decoder is enabled.]) 184]) 185 186################# 187# Match finders # 188################# 189 190m4_define([SUPPORTED_MATCH_FINDERS], [hc3,hc4,bt2,bt3,bt4]) 191 192m4_foreach([NAME], [SUPPORTED_MATCH_FINDERS], [ 193 AC_DEFINE(HAVE_MF_[]m4_toupper(NAME), [1], 194 [Define to 1 to enable] NAME [match finder.]) 195]) 196 197AC_MSG_CHECKING([which match finders to build]) 198AC_ARG_ENABLE([match-finders], AS_HELP_STRING([--enable-match-finders=LIST], 199 [Comma-separated list of match finders to build. Default=all. 200 At least one match finder is required for encoding with 201 the LZMA1 and LZMA2 filters. Available match finders:] 202 m4_translit(m4_defn([SUPPORTED_MATCH_FINDERS]), [,], [ ])), [], 203 [enable_match_finders=SUPPORTED_MATCH_FINDERS]) 204enable_match_finders=`echo "$enable_match_finders" | sed 's/,/ /g'` 205if test "x$enable_encoder_lz" = xyes ; then 206 for arg in $enable_match_finders 207 do 208 case $arg in m4_foreach([NAME], [SUPPORTED_MATCH_FINDERS], [ 209 NAME) 210 enable_match_finder_[]NAME=yes 211 AC_DEFINE(HAVE_MF_[]m4_toupper(NAME), [1], 212 [Define to 1 to enable] NAME [match finder.]) 213 ;;]) 214 *) 215 AC_MSG_RESULT([]) 216 AC_MSG_ERROR([unknown match finder: $arg]) 217 ;; 218 esac 219 done 220 AC_MSG_RESULT([$enable_match_finders]) 221else 222 AC_MSG_RESULT([(none because not building any LZ-based encoder)]) 223fi 224 225 226#################### 227# Integrity checks # 228#################### 229 230m4_define([SUPPORTED_CHECKS], [crc32,crc64,sha256]) 231 232m4_foreach([NAME], [SUPPORTED_CHECKS], 233[enable_check_[]NAME=no 234])dnl 235 236AC_MSG_CHECKING([which integrity checks to build]) 237AC_ARG_ENABLE([checks], AS_HELP_STRING([--enable-checks=LIST], 238 [Comma-separated list of integrity checks to build. 239 Default=all. Available integrity checks:] 240 m4_translit(m4_defn([SUPPORTED_CHECKS]), [,], [ ])), 241 [], [enable_checks=SUPPORTED_CHECKS]) 242enable_checks=`echo "$enable_checks" | sed 's/,/ /g'` 243if test "x$enable_checks" = xno || test "x$enable_checks" = x; then 244 AC_MSG_RESULT([(none)]) 245else 246 for arg in $enable_checks 247 do 248 case $arg in m4_foreach([NAME], [SUPPORTED_CHECKS], [ 249 NAME) 250 enable_check_[]NAME=yes 251 AC_DEFINE(HAVE_CHECK_[]m4_toupper(NAME), [1], 252 [Define to 1 if] NAME 253 [integrity check is enabled.]) 254 ;;]) 255 *) 256 AC_MSG_RESULT([]) 257 AC_MSG_ERROR([unknown integrity check: $arg]) 258 ;; 259 esac 260 done 261 AC_MSG_RESULT([$enable_checks]) 262fi 263if test "x$enable_check_crc32" = xno ; then 264 AC_MSG_ERROR([For now, the CRC32 check must always be enabled.]) 265fi 266 267m4_foreach([NAME], [SUPPORTED_CHECKS], 268[AM_CONDITIONAL(COND_CHECK_[]m4_toupper(NAME), test "x$enable_check_[]NAME" = xyes) 269])dnl 270 271 272########################### 273# Assembler optimizations # 274########################### 275 276AM_CONDITIONAL(COND_ASM_X86, false) 277AM_CONDITIONAL(COND_ASM_X86_64, false) 278 279 280##################### 281# Size optimization # 282##################### 283 284if false; then 285AC_MSG_CHECKING([if small size is preferred over speed]) 286AC_ARG_ENABLE([small], AS_HELP_STRING([--enable-small], 287 [Make liblzma smaller and a little slower. 288 This is disabled by default to optimize for speed.]), 289 [], [enable_small=no]) 290if test "x$enable_small" = xyes; then 291 AC_DEFINE([HAVE_SMALL], [1], [Define to 1 if optimizing for size.]) 292elif test "x$enable_small" != xno; then 293 AC_MSG_RESULT([]) 294 AC_MSG_ERROR([--enable-small accepts only `yes' or `no']) 295fi 296AC_MSG_RESULT([$enable_small]) 297AM_CONDITIONAL(COND_SMALL, test "x$enable_small" = xyes) 298fi 299 300 301############# 302# Threading # 303############# 304 305AC_MSG_CHECKING([if threading support is wanted]) 306AC_ARG_ENABLE([threads], AS_HELP_STRING([--enable-threads=METHOD], 307 [Supported METHODS are `yes', `no', `posix', `win95', and 308 `vista'. The default is `yes'. Using `no' together with 309 --enable-small makes liblzma thread unsafe.]), 310 [], [enable_threads=yes]) 311 312if test "x$enable_threads" = xyes; then 313 case $host_os in 314 mingw*) 315 case $host_cpu in 316 i?86) enable_threads=win95 ;; 317 *) enable_threads=vista ;; 318 esac 319 ;; 320 *) 321 enable_threads=posix 322 ;; 323 esac 324fi 325 326case $enable_threads in 327 posix | win95 | vista) 328 AC_MSG_RESULT([yes, $enable_threads]) 329 ;; 330 no) 331 AC_MSG_RESULT([no]) 332 ;; 333 *) 334 AC_MSG_RESULT([]) 335 AC_MSG_ERROR([--enable-threads only accepts `yes', `no', `posix', `win95', or `vista']) 336 ;; 337esac 338 339# The Win95 threading lacks thread-safe one-time initialization function. 340# It's better to disallow it instead of allowing threaded but thread-unsafe 341# build. 342if test "x$enable_small$enable_threads" = xyeswin95; then 343 AC_MSG_ERROR([--enable-threads=win95 and --enable-small cannot be 344 used at the same time]) 345fi 346 347# We use the actual result a little later. 348 349 350######################### 351# Assumed amount of RAM # 352######################### 353 354# We use 128 MiB as default, because it will allow decompressing files 355# created with "xz -9". It would be slightly safer to guess a lower value, 356# but most systems, on which we don't have any way to determine the amount 357# of RAM, will probably have at least 128 MiB of RAM. 358AC_MSG_CHECKING([how much RAM to assume if the real amount is unknown]) 359AC_ARG_ENABLE([assume-ram], AS_HELP_STRING([--enable-assume-ram=SIZE], 360 [If and only if the real amount of RAM cannot be determined, 361 assume SIZE MiB. The default is 128 MiB. This affects the 362 default memory usage limit.]), 363 [], [enable_assume_ram=128]) 364assume_ram_check=`echo "$enable_assume_ram" | tr -d 0123456789` 365if test -z "$enable_assume_ram" || test -n "$assume_ram_check"; then 366 AC_MSG_RESULT([]) 367 AC_MSG_ERROR([--enable-assume-ram accepts only an integer argument]) 368fi 369AC_MSG_RESULT([$enable_assume_ram MiB]) 370AC_DEFINE_UNQUOTED([ASSUME_RAM], [$enable_assume_ram], 371 [How many MiB of RAM to assume if the real amount cannot 372 be determined.]) 373 374 375######################### 376# Components to install # 377######################### 378 379AC_ARG_ENABLE([xz], [AS_HELP_STRING([--disable-xz], 380 [do not build the xz tool])], 381 [], [enable_xz=yes]) 382AM_CONDITIONAL([COND_XZ], [test x$enable_xz != xno]) 383 384AC_ARG_ENABLE([xzdec], [AS_HELP_STRING([--disable-xzdec], 385 [do not build xzdec])], 386 [], [enable_xzdec=yes]) 387AM_CONDITIONAL([COND_XZDEC], [test x$enable_xzdec != xno]) 388 389AC_ARG_ENABLE([lzmadec], [AS_HELP_STRING([--disable-lzmadec], 390 [do not build lzmadec 391 (it exists primarily for LZMA Utils compatibility)])], 392 [], [enable_lzmadec=yes]) 393AM_CONDITIONAL([COND_LZMADEC], [test x$enable_lzmadec != xno]) 394 395AC_ARG_ENABLE([lzmainfo], [AS_HELP_STRING([--disable-lzmainfo], 396 [do not build lzmainfo 397 (it exists primarily for LZMA Utils compatibility)])], 398 [], [enable_lzmainfo=yes]) 399AM_CONDITIONAL([COND_LZMAINFO], [test x$enable_lzmainfo != xno]) 400 401AC_ARG_ENABLE([lzma-links], [AS_HELP_STRING([--disable-lzma-links], 402 [do not create symlinks for LZMA Utils compatibility])], 403 [], [enable_lzma_links=yes]) 404AM_CONDITIONAL([COND_LZMALINKS], [test x$enable_lzma_links != xno]) 405 406AC_ARG_ENABLE([scripts], [AS_HELP_STRING([--disable-scripts], 407 [do not install the scripts xzdiff, xzgrep, xzless, xzmore, 408 and their symlinks])], 409 [], [enable_scripts=yes]) 410AM_CONDITIONAL([COND_SCRIPTS], [test x$enable_scripts != xno]) 411 412AC_ARG_ENABLE([doc], [AS_HELP_STRING([--disable-doc], 413 [do not install documentation files to docdir 414 (man pages will still be installed)])], 415 [], [enable_doc=yes]) 416AM_CONDITIONAL([COND_DOC], [test x$enable_doc != xno]) 417 418 419##################### 420# Symbol versioning # 421##################### 422 423AC_MSG_CHECKING([if library symbol versioning should be used]) 424AC_ARG_ENABLE([symbol-versions], [AS_HELP_STRING([--enable-symbol-versions], 425 [Use symbol versioning for liblzma. Enabled by default on 426 GNU/Linux, other GNU-based systems, and FreeBSD.])], 427 [], [enable_symbol_versions=auto]) 428if test "x$enable_symbol_versions" = xauto; then 429 case $host_os in 430 # NOTE: Even if one omits -gnu on GNU/Linux (e.g. 431 # i486-slackware-linux), configure will (via config.sub) 432 # append -gnu (e.g. i486-slackware-linux-gnu), and this 433 # test will work correctly. 434 gnu* | *-gnu* | freebsd*) 435 enable_symbol_versions=yes 436 ;; 437 *) 438 enable_symbol_versions=no 439 ;; 440 esac 441fi 442AC_MSG_RESULT([$enable_symbol_versions]) 443AM_CONDITIONAL([COND_SYMVERS], [test "x$enable_symbol_versions" = xyes]) 444 445 446############################################################################### 447# Checks for programs. 448############################################################################### 449 450echo 451gl_POSIX_SHELL 452if test -z "$POSIX_SHELL" && test "x$enable_scripts" = xyes ; then 453 AC_MSG_ERROR([No POSIX conforming shell (sh) was found.]) 454fi 455 456echo 457echo "Initializing Automake:" 458 459# We don't use "subdir-objects" yet because it breaks "make distclean" when 460# dependencies are enabled (as of Automake 1.14.1) due to this bug: 461# http://debbugs.gnu.org/cgi/bugreport.cgi?bug=17354 462# The -Wno-unsupported is used to silence warnings about missing 463# "subdir-objects". 464AM_INIT_AUTOMAKE([1.12 foreign tar-v7 filename-length-max=99 serial-tests -Wno-unsupported]) 465AC_PROG_LN_S 466 467AC_PROG_CC_C99 468if test x$ac_cv_prog_cc_c99 = xno ; then 469 AC_MSG_ERROR([No C99 compiler was found.]) 470fi 471 472AM_PROG_CC_C_O 473AM_PROG_AS 474AC_USE_SYSTEM_EXTENSIONS 475 476case $enable_threads in 477 posix) 478 echo 479 echo "POSIX threading support:" 480 AX_PTHREAD([:]) dnl We don't need the HAVE_PTHREAD macro. 481 LIBS="$LIBS $PTHREAD_LIBS" 482 AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS" 483 484 dnl NOTE: PTHREAD_CC is ignored. It would be useful on AIX, 485 dnl but it's tricky to get it right together with 486 dnl AC_PROG_CC_C99. Thus, this is handled by telling the 487 dnl user in INSTALL to set the correct CC manually. 488 489 AC_DEFINE([MYTHREAD_POSIX], [1], 490 [Define to 1 when using POSIX threads (pthreads).]) 491 492 # These are nice to have but not mandatory. 493 # 494 # FIXME: xz uses clock_gettime if it is available and can do 495 # it even when threading is disabled. Moving this outside 496 # of pthread detection may be undesirable because then 497 # liblzma may get linked against librt even when librt isn't 498 # needed by liblzma. 499 OLD_CFLAGS=$CFLAGS 500 CFLAGS="$CFLAGS $PTHREAD_CFLAGS" 501 AC_SEARCH_LIBS([clock_gettime], [rt]) 502 AC_CHECK_FUNCS([clock_gettime pthread_condattr_setclock]) 503 AC_CHECK_DECLS([CLOCK_MONOTONIC], [], [], [[#include <time.h>]]) 504 CFLAGS=$OLD_CFLAGS 505 ;; 506 win95) 507 AC_DEFINE([MYTHREAD_WIN95], [1], [Define to 1 when using 508 Windows 95 (and thus XP) compatible threads. 509 This avoids use of features that were added in 510 Windows Vista.]) 511 ;; 512 vista) 513 AC_DEFINE([MYTHREAD_VISTA], [1], [Define to 1 when using 514 Windows Vista compatible threads. This uses 515 features that are not available on Windows XP.]) 516 ;; 517esac 518AM_CONDITIONAL([COND_THREADS], [test "x$enable_threads" != xno]) 519 520echo 521echo "Initializing Libtool:" 522LT_PREREQ([2.2]) 523LT_INIT([win32-dll]) 524LT_LANG([Windows Resource]) 525 526# This is a bit wrong since it is possible to request that only some libs 527# are built as shared. Using that feature isn't so common though, and this 528# breaks only on Windows (at least for now) if the user enables only some 529# libs as shared. 530AM_CONDITIONAL([COND_SHARED], [test "x$enable_shared" != xno]) 531 532 533############################################################################### 534# Checks for libraries. 535############################################################################### 536 537echo 538echo "Initializing gettext:" 539AM_GNU_GETTEXT_VERSION([0.18]) 540AM_GNU_GETTEXT([external]) 541 542 543############################################################################### 544# Checks for header files. 545############################################################################### 546 547AC_DEFINE_UNQUOTED([ASSUME_RAM], [128], 548 [How many MiB of RAM to assume if the real amount cannot be determined.]) 549 550# There is currently no workarounds in this package if some of 551# these headers are missing. 552AC_CHECK_HEADERS([fcntl.h limits.h sys/time.h], 553 [], 554 [AC_MSG_ERROR([Required header file(s) are missing.])]) 555 556# This allows the use of the intrinsic functions if they are available. 557AC_CHECK_HEADERS([immintrin.h]) 558 559 560############################################################################### 561# Checks for typedefs, structures, and compiler characteristics. 562############################################################################### 563 564dnl We don't need these as long as we need a C99 compiler anyway. 565dnl AC_C_INLINE 566dnl AC_C_RESTRICT 567 568AC_HEADER_STDBOOL 569 570AC_TYPE_UINT8_T 571AC_TYPE_UINT16_T 572AC_TYPE_INT32_T 573AC_TYPE_UINT32_T 574AC_TYPE_INT64_T 575AC_TYPE_UINT64_T 576AC_TYPE_UINTPTR_T 577 578AC_CHECK_SIZEOF([size_t]) 579 580# The command line tool can copy high resolution timestamps if such 581# information is available in struct stat. Otherwise one second accuracy 582# is used. 583AC_CHECK_MEMBERS([ 584 struct stat.st_atim.tv_nsec, 585 struct stat.st_atimespec.tv_nsec, 586 struct stat.st_atimensec, 587 struct stat.st_uatime, 588 struct stat.st_atim.st__tim.tv_nsec]) 589 590AC_SYS_LARGEFILE 591AC_C_BIGENDIAN 592 593# Find the best function to set timestamps. 594AC_CHECK_FUNCS([futimens futimes futimesat utimes utime], [break]) 595 596# These are nice to have but not mandatory. 597AC_CHECK_FUNCS([posix_fadvise pipe2]) 598 599TUKLIB_PROGNAME 600TUKLIB_INTEGER 601TUKLIB_PHYSMEM 602TUKLIB_CPUCORES 603TUKLIB_MBSTR 604 605# Check for system-provided SHA-256. At least the following is supported: 606# 607# OS Headers Library Type Function 608# FreeBSD sys/types.h + sha256.h libmd SHA256_CTX SHA256_Init 609# NetBSD sys/types.h + sha2.h SHA256_CTX SHA256_Init 610# OpenBSD sys/types.h + sha2.h SHA2_CTX SHA256Init 611# Solaris sys/types.h + sha2.h libmd SHA256_CTX SHA256Init 612# MINIX 3 sys/types.h + minix/sha2.h libutil SHA256_CTX SHA256_Init 613# Darwin CommonCrypto/CommonDigest.h CC_SHA256_CTX CC_SHA256_Init 614# 615# Note that Darwin's CC_SHA256_Update takes buffer size as uint32_t instead 616# of size_t. 617# 618# We don't check for e.g. OpenSSL or libgcrypt because we don't want 619# to introduce dependencies to other packages by default. Maybe such 620# libraries could be supported via additional configure options though. 621# 622if test "x$enable_check_sha256" = "xyes"; then 623 # Test for Common Crypto before others, because Darwin has sha256.h 624 # too and we don't want to use that, because on older versions it 625 # uses OpenSSL functions, whose SHA256_Init is not guaranteed to 626 # succeed. 627 sha256_header_found=no 628 AC_CHECK_HEADERS( 629 [CommonCrypto/CommonDigest.h sha256.h sha2.h minix/sha2.h], 630 [sha256_header_found=yes ; break]) 631 if test "x$sha256_header_found" = xyes; then 632 AC_CHECK_TYPES([CC_SHA256_CTX, SHA256_CTX, SHA2_CTX], [], [], 633 [[#ifdef HAVE_SYS_TYPES_H 634 # include <sys/types.h> 635 #endif 636 #ifdef HAVE_COMMONCRYPTO_COMMONDIGEST_H 637 # include <CommonCrypto/CommonDigest.h> 638 #endif 639 #ifdef HAVE_SHA256_H 640 # include <sha256.h> 641 #endif 642 #ifdef HAVE_SHA2_H 643 # include <sha2.h> 644 #endif 645 #ifdef HAVE_MINIX_SHA2_H 646 # include <minix/sha2.h> 647 #endif]]) 648 AC_SEARCH_LIBS([SHA256_Init], [md util]) 649 AC_SEARCH_LIBS([SHA256Init], [md]) 650 AC_CHECK_FUNCS([CC_SHA256_Init SHA256_Init SHA256Init], 651 [break]) 652 fi 653fi 654AM_CONDITIONAL([COND_INTERNAL_SHA256], 655 [test "x$ac_cv_func_SHA256_Init" != xyes \ 656 && test "x$ac_cv_func_SHA256Init" != xyes \ 657 && test "x$ac_cv_func_CC_SHA256_Init" != xyes]) 658 659# Check for SSE2 intrinsics. 660AC_CHECK_DECL([_mm_movemask_epi8], 661 [AC_DEFINE([HAVE__MM_MOVEMASK_EPI8], [1], 662 [Define to 1 if _mm_movemask_epi8 is available.])], 663 [], 664[#ifdef HAVE_IMMINTRIN_H 665#include <immintrin.h> 666#endif]) 667 668 669############################################################################### 670# If using GCC, set some additional AM_CFLAGS: 671############################################################################### 672 673if test "$GCC" = yes ; then 674 echo 675 echo "GCC extensions:" 676fi 677 678# Always do the visibility check but don't set AM_CFLAGS on Windows. 679# This way things get set properly even on Windows. 680gl_VISIBILITY 681if test -n "$CFLAG_VISIBILITY" && test "$is_w32" = no; then 682 AM_CFLAGS="$AM_CFLAGS $CFLAG_VISIBILITY" 683fi 684 685if test "$GCC" = yes ; then 686 # Enable as much warnings as possible. These commented warnings won't 687 # work for this package though: 688 # * -Wunreachable-code breaks several assert(0) cases, which are 689 # backed up with "return LZMA_PROG_ERROR". 690 # * -Wcast-qual would break various things where we need a non-const 691 # pointer although we don't modify anything through it. 692 # * -Wcast-align breaks optimized CRC32 and CRC64 implementation 693 # on some architectures (not on x86), where this warning is bogus, 694 # because we take care of correct alignment. 695 # * -Winline, -Wdisabled-optimization, -Wunsafe-loop-optimizations 696 # don't seem so useful here; at least the last one gives some 697 # warnings which are not bugs. 698 for NEW_FLAG in \ 699 -Wall \ 700 -Wextra \ 701 -Wvla \ 702 -Wformat=2 \ 703 -Winit-self \ 704 -Wmissing-include-dirs \ 705 -Wstrict-aliasing \ 706 -Wfloat-equal \ 707 -Wundef \ 708 -Wshadow \ 709 -Wpointer-arith \ 710 -Wbad-function-cast \ 711 -Wwrite-strings \ 712 -Wlogical-op \ 713 -Waggregate-return \ 714 -Wstrict-prototypes \ 715 -Wold-style-definition \ 716 -Wmissing-prototypes \ 717 -Wmissing-declarations \ 718 -Wmissing-noreturn \ 719 -Wredundant-decls 720 do 721 AC_MSG_CHECKING([if $CC accepts $NEW_FLAG]) 722 OLD_CFLAGS="$CFLAGS" 723 CFLAGS="$CFLAGS $NEW_FLAG -Werror" 724 AC_COMPILE_IFELSE([AC_LANG_SOURCE( 725 [void foo(void); void foo(void) { }])], [ 726 AM_CFLAGS="$AM_CFLAGS $NEW_FLAG" 727 AC_MSG_RESULT([yes]) 728 ], [ 729 AC_MSG_RESULT([no]) 730 ]) 731 CFLAGS="$OLD_CFLAGS" 732 done 733 734 AC_ARG_ENABLE([werror], 735 AS_HELP_STRING([--enable-werror], [Enable -Werror to abort 736 compilation on all compiler warnings.]), 737 [], [enable_werror=no]) 738 if test "x$enable_werror" = "xyes"; then 739 AM_CFLAGS="$AM_CFLAGS -Werror" 740 fi 741fi 742 743 744############################################################################### 745# Create the makefiles and config.h 746############################################################################### 747 748echo 749 750# Don't build the lib directory at all if we don't need any replacement 751# functions. 752AM_CONDITIONAL([COND_GNULIB], test -n "$LIBOBJS") 753 754# Add default AM_CFLAGS. 755AC_SUBST([AM_CFLAGS]) 756 757# This is needed for src/scripts. 758xz=`echo xz | sed "$program_transform_name"` 759AC_SUBST([xz]) 760 761AC_CONFIG_FILES([ 762 Doxyfile 763 Makefile 764 po/Makefile.in 765 lib/Makefile 766 src/Makefile 767 src/liblzma/Makefile 768 src/liblzma/api/Makefile 769 src/xz/Makefile 770 src/xzdec/Makefile 771 src/lzmainfo/Makefile 772 src/scripts/Makefile 773 tests/Makefile 774 debug/Makefile 775]) 776AC_CONFIG_FILES([src/scripts/xzdiff], [chmod +x src/scripts/xzdiff]) 777AC_CONFIG_FILES([src/scripts/xzgrep], [chmod +x src/scripts/xzgrep]) 778AC_CONFIG_FILES([src/scripts/xzmore], [chmod +x src/scripts/xzmore]) 779AC_CONFIG_FILES([src/scripts/xzless], [chmod +x src/scripts/xzless]) 780 781AC_OUTPUT 782 783# Some warnings 784if test x$tuklib_cv_physmem_method = xunknown; then 785 echo 786 echo "WARNING:" 787 echo "No supported method to detect the amount of RAM." 788 echo "Consider using --enable-assume-ram (if you didn't already)" 789 echo "or make a patch to add support for this operating system." 790fi 791 792if test x$tuklib_cv_cpucores_method = xunknown; then 793 echo 794 echo "WARNING:" 795 echo "No supported method to detect the number of CPU cores." 796fi 797 798if test "x$enable_threads$enable_small" = xnoyes; then 799 echo 800 echo "NOTE:" 801 echo "liblzma will be thread unsafe due the combination" 802 echo "of --disable-threads --enable-small." 803fi 804