2 # Process this file with autoconf to produce a configure script.
4 ###############################################################################
6 # Copyright (C) 2007 Lasse Collin
8 # This library is free software; you can redistribute it and/or
9 # modify it under the terms of the GNU Lesser General Public
10 # License as published by the Free Software Foundation; either
11 # version 2.1 of the License, or (at your option) any later version.
13 # This library is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 # Lesser General Public License for more details.
18 ###############################################################################
20 # NOTE: Don't add useless checks. autoscan detects this and that, but don't
21 # let it confuse you. For example, we don't care about checking for behavior
22 # of malloc(), stat(), or lstat(), since we don't use those functions in
23 # a way that would cause the problems the autoconf macros check.
27 AC_INIT([xz], [4.999.6alpha], [lasse.collin@tukaani.org])
28 AC_CONFIG_SRCDIR([src/liblzma/common/common.h])
29 AC_CONFIG_HEADER([config.h])
32 echo "$PACKAGE_STRING"
36 # This is needed to know if assembler optimizations can be used.
41 echo "Configure options:"
48 AC_MSG_CHECKING([if debugging code should be compiled])
49 AC_ARG_ENABLE(debug, AC_HELP_STRING([--enable-debug], [Enable debugging code.]),
51 if test "x$enable_debug" = xyes; then
54 AC_DEFINE(NDEBUG, 1, [Define to 1 to disable debugging code.])
63 AC_MSG_CHECKING([if encoder components should be built])
64 AC_ARG_ENABLE(encoder, AC_HELP_STRING([--disable-encoder],
65 [Do not build the encoder components.]),
66 [], enable_encoder=yes)
67 if test "x$enable_encoder" = xyes; then
68 AC_DEFINE([HAVE_ENCODER], 1,
69 [Define to 1 if encoder components are enabled.])
74 AM_CONDITIONAL(COND_MAIN_ENCODER, test "x$enable_encoder" = xyes)
81 AC_MSG_CHECKING([if decoder components should be built])
82 AC_ARG_ENABLE(decoder, AC_HELP_STRING([--disable-decoder],
83 [Do not build the decoder components.]),
84 [], enable_decoder=yes)
85 if test "x$enable_decoder" = xyes; then
86 AC_DEFINE([HAVE_DECODER], 1,
87 [Define to 1 if decoder components are enabled.])
91 if test "x$enable_encoder" = xno; then
92 AC_MSG_ERROR([Do not disable both encoder and decoder.])
95 AM_CONDITIONAL(COND_MAIN_DECODER, test "x$enable_decoder" = xyes)
102 m4_define([SUPPORTED_FILTERS], [lzma1,lzma2,subblock,delta,x86,powerpc,ia64,arm,armthumb,sparc])dnl
103 m4_define([SIMPLE_FILTERS], [x86,powerpc,ia64,arm,armthumb,sparc])
104 m4_define([LZ_FILTERS], [lzma1,lzma2])
106 m4_foreach([NAME], [SUPPORTED_FILTERS],
107 [enable_filter_[]NAME=no
108 enable_encoder_[]NAME=no
109 enable_decoder_[]NAME=no
112 AC_MSG_CHECKING([which encoders to build])
113 AC_ARG_ENABLE([encoders], AC_HELP_STRING([--enable-encoders=LIST],
114 [Comma-separated list of encoders to build. Default=all.
116 m4_translit(m4_defn([SUPPORTED_FILTERS]), [,], [ ])),
117 [], [enable_encoders=SUPPORTED_FILTERS])
118 enable_encoders=`echo "$enable_encoders" | sed 's/,/ /g'`
119 if test "x$enable_encoders" = xno || test "x$enable_encoders" = x; then
120 AC_MSG_RESULT([(none)])
122 for arg in $enable_encoders
124 case $arg in m4_foreach([NAME], [SUPPORTED_FILTERS], [
126 enable_filter_[]NAME=yes
127 enable_encoder_[]NAME=yes
128 AC_DEFINE(HAVE_ENCODER_[]m4_toupper(NAME), [1],
129 [Define to 1 if] NAME [encoder is enabled.])
133 AC_MSG_ERROR([unknown filter: $arg])
137 AC_MSG_RESULT([$enable_encoders])
140 AC_MSG_CHECKING([which decoders to build])
141 AC_ARG_ENABLE([decoders], AC_HELP_STRING([--enable-decoders=LIST],
142 [Comma-separated list of decoders to build. Default=all.
143 Available decoders are the same as available encoders.]),
144 [], [enable_decoders=SUPPORTED_FILTERS])
145 enable_decoders=`echo "$enable_decoders" | sed 's/,/ /g'`
146 if test "x$enable_decoders" = xno || test "x$enable_decoders" = x; then
147 AC_MSG_RESULT([(none)])
149 for arg in $enable_decoders
151 case $arg in m4_foreach([NAME], [SUPPORTED_FILTERS], [
153 enable_filter_[]NAME=yes
154 enable_decoder_[]NAME=yes
155 AC_DEFINE(HAVE_DECODER_[]m4_toupper(NAME), [1],
156 [Define to 1 if] NAME [decoder is enabled.])
160 AC_MSG_ERROR([unknown filter: $arg])
165 # LZMA2 requires that LZMA1 is enabled.
166 test "x$enable_encoder_lzma2" = xyes && enable_encoder_lzma1=yes
167 test "x$enable_decoder_lzma2" = xyes && enable_decoder_lzma1=yes
169 AC_MSG_RESULT([$enable_decoders])
172 if test "x$enable_encoder_lzma2$enable_encoder_lzma1" = xyesno \
173 || test "x$enable_decoder_lzma2$enable_decoder_lzma1" = xyesno; then
174 AC_MSG_ERROR([LZMA2 requires that LZMA1 is also enabled.])
177 m4_foreach([NAME], [SUPPORTED_FILTERS],
178 [AM_CONDITIONAL(COND_FILTER_[]m4_toupper(NAME), test "x$enable_filter_[]NAME" = xyes)
179 AM_CONDITIONAL(COND_ENCODER_[]m4_toupper(NAME), test "x$enable_encoder_[]NAME" = xyes)
180 AM_CONDITIONAL(COND_DECODER_[]m4_toupper(NAME), test "x$enable_decoder_[]NAME" = xyes)
183 # The so called "simple filters" share common code.
184 enable_filter_simple=no
185 enable_encoder_simple=no
186 enable_decoder_simple=no
187 m4_foreach([NAME], [SIMPLE_FILTERS],
188 [test "x$enable_filter_[]NAME" = xyes && enable_filter_simple=yes
189 test "x$enable_encoder_[]NAME" = xyes && enable_encoder_simple=yes
190 test "x$enable_decoder_[]NAME" = xyes && enable_decoder_simple=yes
192 AM_CONDITIONAL(COND_FILTER_SIMPLE, test "x$enable_filter_simple" = xyes)
193 AM_CONDITIONAL(COND_ENCODER_SIMPLE, test "x$enable_encoder_simple" = xyes)
194 AM_CONDITIONAL(COND_DECODER_SIMPLE, test "x$enable_decoder_simple" = xyes)
196 # LZ-based filters share common code.
200 m4_foreach([NAME], [LZ_FILTERS],
201 [test "x$enable_filter_[]NAME" = xyes && enable_filter_lz=yes
202 test "x$enable_encoder_[]NAME" = xyes && enable_encoder_lz=yes
203 test "x$enable_decoder_[]NAME" = xyes && enable_decoder_lz=yes
205 AM_CONDITIONAL(COND_FILTER_LZ, test "x$enable_filter_lz" = xyes)
206 AM_CONDITIONAL(COND_ENCODER_LZ, test "x$enable_encoder_lz" = xyes)
207 AM_CONDITIONAL(COND_DECODER_LZ, test "x$enable_decoder_lz" = xyes)
214 m4_define([SUPPORTED_MATCH_FINDERS], [hc3,hc4,bt2,bt3,bt4])
216 m4_foreach([NAME], [SUPPORTED_MATCH_FINDERS],
217 [enable_match_finder_[]NAME=no
220 AC_MSG_CHECKING([which match finders to build])
221 AC_ARG_ENABLE(match-finders, AC_HELP_STRING([--enable-match-finders=LIST],
222 [Comma-separated list of match finders to build. Default=all.
223 At least one match finder is required for encoding with
224 the LZMA1 and LZMA2 filters. Available match finders:]
225 m4_translit(m4_defn([SUPPORTED_MATCH_FINDERS]), [,], [ ])), [],
226 [enable_match_finders=SUPPORTED_MATCH_FINDERS])
227 enable_match_finders=`echo "$enable_match_finders" | sed 's/,/ /g'`
228 if test "x$enable_encoder" = xyes && test "x$enable_encoder_lz" = xyes ; then
229 for arg in $enable_match_finders
231 case $arg in m4_foreach([NAME], [SUPPORTED_MATCH_FINDERS], [
233 enable_match_finder_[]NAME=yes
234 AC_DEFINE(HAVE_MF_[]m4_toupper(NAME), [1],
235 [Define to 1 to enable] NAME [match finder.])
239 AC_MSG_ERROR([unknown match finder: $arg])
243 AC_MSG_RESULT([$enable_match_finders])
245 AC_MSG_RESULT([(none because not building any LZ-based encoder)])
253 m4_define([SUPPORTED_CHECKS], [crc32,crc64,sha256])
255 m4_foreach([NAME], [SUPPORTED_FILTERS],
256 [enable_check_[]NAME=no
259 AC_MSG_CHECKING([which integrity checks to build])
260 AC_ARG_ENABLE(checks, AC_HELP_STRING([--enable-checks=LIST],
261 [Comma-separated list of integrity checks to build.
262 Default=all. Available integrity checks:]
263 m4_translit(m4_defn([SUPPORTED_CHECKS]), [,], [ ])),
264 [], [enable_checks=SUPPORTED_CHECKS])
265 enable_checks=`echo "$enable_checks" | sed 's/,/ /g'`
266 if test "x$enable_checks" = xno || test "x$enable_checks" = x; then
267 AC_MSG_RESULT([(none)])
269 for arg in $enable_checks
271 case $arg in m4_foreach([NAME], [SUPPORTED_CHECKS], [
273 enable_check_[]NAME=yes
274 AC_DEFINE(HAVE_CHECK_[]m4_toupper(NAME), [1],
275 [Define to 1 if] NAME
276 [integrity check is enabled.])
280 AC_MSG_ERROR([unknown integrity check: $arg])
284 AC_MSG_RESULT([$enable_checks])
286 if test "x$enable_checks_crc32" = xno ; then
287 AC_MSG_ERROR([For now, the CRC32 check must always be enabled.])
290 m4_foreach([NAME], [SUPPORTED_CHECKS],
291 [AM_CONDITIONAL(COND_CHECK_[]m4_toupper(NAME), test "x$enable_check_[]NAME" = xyes)
295 ###########################
296 # Assembler optimizations #
297 ###########################
299 AC_MSG_CHECKING([if assembler optimizations should be used])
300 AC_ARG_ENABLE(assembler, AC_HELP_STRING([--disable-assembler],
301 [Do not use assembler optimizations even if such exist
302 for the architecture.]),
303 [], [enable_assembler=yes])
304 if test "x$enable_assembler" = xyes; then
306 i?86) enable_assembler=x86 ;;
307 x86_64) enable_assembler=x86_64 ;;
308 *) enable_assembler=no ;;
310 # Darwin has different ABI than GNU+Linux and Solaris,
311 # and the assembler code doesn't assemble.
313 darwin*) enable_assembler=no ;;
317 case $enable_assembler in
319 AC_DEFINE([HAVE_ASM_X86], 1,
320 [Define to 1 if using x86 assembler optimizations.])
323 AC_DEFINE([HAVE_ASM_X86_64], 1,
324 [Define to 1 if using x86_64 assembler optimizations.])
330 AC_MSG_ERROR([--enable-assembler accepts only \`yes', \`no', \`x86', or \`x86_64'.])
333 AC_MSG_RESULT([$enable_assembler])
334 AM_CONDITIONAL(COND_ASM_X86, test "x$enable_assembler" = xx86)
335 AM_CONDITIONAL(COND_ASM_X86_64, test "x$enable_assembler" = xx86_64)
338 ################################
339 # Fast unaligned memory access #
340 ################################
342 AC_MSG_CHECKING([if unaligned memory access should be used])
343 AC_ARG_ENABLE(unaligned-access, AC_HELP_STRING([--enable-unaligned-access],
344 [Enable if the system supports *fast* unaligned memory access
345 with 16-bit and 32-bit integers. By default, this is enabled
346 only on x86, x86_64, and big endian PowerPC.]),
347 [], [enable_unaligned_access=auto])
348 if test "x$enable_unaligned_access" = xauto ; then
350 i?86|x86_64|powerpc|powerpc64)
351 enable_unaligned_access=yes
354 enable_unaligned_access=no
358 if test "x$enable_unaligned_access" = xyes ; then
359 AC_DEFINE([HAVE_FAST_UNALIGNED_ACCESS], [1], [Define to 1 if
360 the system supports fast unaligned memory access.])
367 #####################
368 # Size optimization #
369 #####################
371 AC_MSG_CHECKING([if small size is preferred over speed])
372 AC_ARG_ENABLE(small, AC_HELP_STRING([--enable-small],
373 [Make liblzma smaller and a little slower.
374 This is disabled by default to optimize for speed.]),
375 [], [enable_small=no])
376 if test "x$enable_small" = xyes; then
377 AC_DEFINE([HAVE_SMALL], 1, [Define to 1 if optimizing for size.])
378 elif test "x$enable_small" != xno; then
380 AC_MSG_ERROR([--enable-small accepts only \`yes' or \`no'])
382 AC_MSG_RESULT([$enable_small])
383 AM_CONDITIONAL(COND_SMALL, test "x$enable_small" = xyes)
386 ###############################################################################
387 # Checks for programs.
388 ###############################################################################
391 echo "Initializing Automake:"
393 AM_INIT_AUTOMAKE([1.10 foreign tar-v7 filename-length-max=99])
397 if test x$ac_cv_prog_cc_c99 = xno ; then
398 AC_MSG_ERROR([No C99 compiler was found.])
403 AC_USE_SYSTEM_EXTENSIONS
406 echo "Threading support:"
411 echo "Initializing Libtool:"
417 ###############################################################################
418 # Checks for libraries.
419 ###############################################################################
422 echo "Initializing gettext:"
423 AM_GNU_GETTEXT_VERSION([0.16.1])
424 AM_GNU_GETTEXT([external])
426 ###############################################################################
427 # Checks for header files.
428 ###############################################################################
431 echo "System headers and functions:"
433 # There is currently no workarounds in this package if some of
434 # these headers are missing.
435 AC_CHECK_HEADERS([fcntl.h limits.h sys/time.h],
437 [AC_MSG_ERROR([Required header file(s) are missing.])])
439 # If any of these headers are missing, things should still work correctly:
440 AC_CHECK_HEADERS([sys/param.h sys/sysctl.h byteswap.h],
442 #ifdef HAVE_SYS_PARAM_H
443 # include <sys/param.h>
447 # Even if we have byteswap.h, we may lack the specific macros/functions.
448 if test x$ac_cv_header_byteswap_h = xyes ; then
449 m4_foreach([FUNC], [bswap_16,bswap_32,bswap_64], [
450 AC_MSG_CHECKING([if FUNC is available])
451 AC_LINK_IFELSE([AC_LANG_SOURCE([
452 #include <byteswap.h>
460 AC_DEFINE(HAVE_[]m4_toupper(FUNC), [1],
461 [Define to 1 if] FUNC [is available.])
463 ], [AC_MSG_RESULT([no])])
469 ###############################################################################
470 # Checks for typedefs, structures, and compiler characteristics.
471 ###############################################################################
473 dnl We don't need these as long as we need a C99 compiler anyway.
487 AC_CHECK_SIZEOF([size_t])
489 # The command line tool can copy high resolution timestamps if such
490 # information is availabe in struct stat. Otherwise one second accuracy
493 struct stat.st_atim.tv_nsec,
494 struct stat.st_atimespec.tv_nsec,
495 struct stat.st_atimensec,
496 struct stat.st_uatime,
497 struct stat.st_atim.st__tim.tv_nsec])
503 ###############################################################################
504 # Checks for library functions.
505 ###############################################################################
507 # Gnulib replacements as needed
510 # Find the best function to set timestamps.
511 AC_CHECK_FUNCS([futimens futimes futimesat utimes utime], [break])
513 # Check how to find out the amount of physical memory in the system. The
514 # xz command line tool uses this to automatically limit its memory usage.
515 # - sysconf() gives all the needed info on GNU+Linux and Solaris.
516 # - BSDs use sysctl().
517 AC_MSG_CHECKING([how to detect the amount of physical memory])
518 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
524 i = sysconf(_SC_PAGESIZE);
525 i = sysconf(_SC_PHYS_PAGES);
529 AC_DEFINE([HAVE_PHYSMEM_SYSCONF], 1,
530 [Define to 1 if the amount of physical memory can be detected
531 with sysconf(_SC_PAGESIZE) and sysconf(_SC_PHYS_PAGES).])
532 AC_MSG_RESULT([sysconf])
534 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
535 #include <sys/types.h>
536 #ifdef HAVE_SYS_PARAM_H
537 # include <sys/param.h>
539 #include <sys/sysctl.h>
543 int name[2] = { CTL_HW, HW_PHYSMEM };
545 size_t mem_ptr_size = sizeof(mem);
546 sysctl(name, 2, &mem, &mem_ptr_size, NULL, NULL);
550 AC_DEFINE([HAVE_PHYSMEM_SYSCTL], 1,
551 [Define to 1 if the amount of physical memory can be detected
553 AC_MSG_RESULT([sysctl])
555 AC_MSG_RESULT([unknown])
558 # Check how to find out the number of available CPU cores in the system.
559 # sysconf(_SC_NPROCESSORS_ONLN) works on most systems, except that BSDs
561 AC_MSG_CHECKING([how to detect the number of available CPU cores])
562 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
568 i = sysconf(_SC_NPROCESSORS_ONLN);
572 AC_DEFINE([HAVE_NCPU_SYSCONF], 1,
573 [Define to 1 if the number of available CPU cores can be
574 detected with sysconf(_SC_NPROCESSORS_ONLN).])
575 AC_MSG_RESULT([sysconf])
577 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
578 #include <sys/types.h>
579 #ifdef HAVE_SYS_PARAM_H
580 # include <sys/param.h>
582 #include <sys/sysctl.h>
586 int name[2] = { CTL_HW, HW_NCPU };
588 size_t cpus_size = sizeof(cpus);
589 sysctl(name, 2, &cpus, &cpus_size, NULL, NULL);
593 AC_DEFINE([HAVE_NCPU_SYSCTL], 1,
594 [Define to 1 if the number of available CPU cores can be
595 detected with sysctl().])
596 AC_MSG_RESULT([sysctl])
598 AC_MSG_RESULT([unknown])
602 ###############################################################################
603 # If using GCC, set some additional CFLAGS:
604 ###############################################################################
608 if test "x$GCC" = xyes ; then
610 echo "GCC extensions:"
612 if test -n "$CFLAG_VISIBILITY" ; then
613 CFLAGS="$CFLAG_VISIBILITY $CFLAGS"
616 # -Wno-uninitialized is needed with -Werror with SHA256 code
617 # to omit a bogus warning.
618 AC_MSG_CHECKING([if $CC accepts -Wno-uninitialized])
620 CFLAGS="$CFLAGS -Wno-uninitialized"
621 AC_COMPILE_IFELSE([void foo(void) { }], [Wno_uninitialized=yes])
623 AC_MSG_RESULT([$Wno_uninitialized])
625 # Enable as much warnings as possible. These commented warnings won't
626 # work for this package though:
627 # * -Wunreachable-code breaks several assert(0) cases, which are
628 # backed up with "return LZMA_PROG_ERROR".
629 # * -Wcast-qual would break various things where we need a non-const
630 # pointer although we don't modify anything through it.
631 # * -Wcast-align breaks optimized CRC32 and CRC64 implementation
632 # on some architectures (not on x86), where this warning is bogus,
633 # because we take care of correct alignment.
634 # * -Winline, -Wdisabled-optimization, -Wunsafe-loop-optimizations
635 # don't seem so useful here; at least the last one gives some
636 # warnings which are not bugs.
638 # The flags are in reverse order below so they end up in "beautiful"
639 # order on the actual command line.
643 -Wmissing-declarations \
644 -Wmissing-prototypes \
645 -Wold-style-definition \
646 -Wstrict-prototypes \
650 -Wbad-function-cast \
656 -Wmissing-include-dirs \
662 AC_MSG_CHECKING([if $CC accepts $NEW_FLAG])
664 CFLAGS="$NEW_FLAG $CFLAGS"
665 AC_COMPILE_IFELSE([void foo(void) { }], [
673 AC_ARG_ENABLE([werror],
674 AC_HELP_STRING([--enable-werror], [Enable -Werror to abort
675 compilation on all compiler warnings.]),
676 [], [enable_werror=no])
677 if test "x$enable_werror" = "xyes"; then
678 CFLAGS="-Werror $CFLAGS"
682 AM_CONDITIONAL([COND_WNO_UNINITIALIZED], test "x$Wno_uninitialized" = "xyes")
685 ###############################################################################
686 # Create the makefiles and config.h
687 ###############################################################################
691 # Don't build the lib directory at all if we don't need any replacement
693 AM_CONDITIONAL([COND_GNULIB], test -n "$LIBOBJS")
703 src/liblzma/api/Makefile
704 src/liblzma/common/Makefile
705 src/liblzma/check/Makefile
706 src/liblzma/rangecoder/Makefile
707 src/liblzma/lz/Makefile
708 src/liblzma/lzma/Makefile
709 src/liblzma/subblock/Makefile
710 src/liblzma/delta/Makefile
711 src/liblzma/simple/Makefile