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 Utils], [4.999.8beta], [lasse.collin@tukaani.org], [xz])
28 AC_CONFIG_SRCDIR([src/liblzma/common/common.h])
29 AC_CONFIG_HEADER([config.h])
32 echo "$PACKAGE_STRING"
36 # This is needed to know if assembler optimizations can be used.
41 echo "Configure options:"
49 AC_MSG_CHECKING([if debugging code should be compiled])
50 AC_ARG_ENABLE([debug], AC_HELP_STRING([--enable-debug], [Enable debugging code.]),
52 if test "x$enable_debug" = xyes; then
55 AC_DEFINE([NDEBUG], [1], [Define to 1 to disable debugging code.])
64 AC_MSG_CHECKING([if encoder components should be built])
65 AC_ARG_ENABLE([encoder], AC_HELP_STRING([--disable-encoder],
66 [Do not build the encoder components.]),
67 [], enable_encoder=yes)
68 if test "x$enable_encoder" = xyes; then
69 AC_DEFINE([HAVE_ENCODER], [1],
70 [Define to 1 if encoder components are enabled.])
75 AM_CONDITIONAL(COND_MAIN_ENCODER, test "x$enable_encoder" = xyes)
82 AC_MSG_CHECKING([if decoder components should be built])
83 AC_ARG_ENABLE([decoder], AC_HELP_STRING([--disable-decoder],
84 [Do not build the decoder components.]),
85 [], enable_decoder=yes)
86 if test "x$enable_decoder" = xyes; then
87 AC_DEFINE([HAVE_DECODER], [1],
88 [Define to 1 if decoder components are enabled.])
92 if test "x$enable_encoder" = xno; then
93 AC_MSG_ERROR([Do not disable both encoder and decoder.])
96 AM_CONDITIONAL(COND_MAIN_DECODER, test "x$enable_decoder" = xyes)
103 m4_define([SUPPORTED_FILTERS], [lzma1,lzma2,subblock,delta,x86,powerpc,ia64,arm,armthumb,sparc])dnl
104 m4_define([SIMPLE_FILTERS], [x86,powerpc,ia64,arm,armthumb,sparc])
105 m4_define([LZ_FILTERS], [lzma1,lzma2])
107 m4_foreach([NAME], [SUPPORTED_FILTERS],
108 [enable_filter_[]NAME=no
109 enable_encoder_[]NAME=no
110 enable_decoder_[]NAME=no
113 AC_MSG_CHECKING([which encoders to build])
114 AC_ARG_ENABLE([encoders], AC_HELP_STRING([--enable-encoders=LIST],
115 [Comma-separated list of encoders to build. Default=all.
117 m4_translit(m4_defn([SUPPORTED_FILTERS]), [,], [ ])),
118 [], [enable_encoders=SUPPORTED_FILTERS])
119 enable_encoders=`echo "$enable_encoders" | sed 's/,subblock//; s/,/ /g'`
120 if test "x$enable_encoders" = xno || test "x$enable_encoders" = x; then
121 AC_MSG_RESULT([(none)])
123 for arg in $enable_encoders
125 case $arg in m4_foreach([NAME], [SUPPORTED_FILTERS], [
127 enable_filter_[]NAME=yes
128 enable_encoder_[]NAME=yes
129 AC_DEFINE(HAVE_ENCODER_[]m4_toupper(NAME), [1],
130 [Define to 1 if] NAME [encoder is enabled.])
134 AC_MSG_ERROR([unknown filter: $arg])
138 AC_MSG_RESULT([$enable_encoders])
141 AC_MSG_CHECKING([which decoders to build])
142 AC_ARG_ENABLE([decoders], AC_HELP_STRING([--enable-decoders=LIST],
143 [Comma-separated list of decoders to build. Default=all.
144 Available decoders are the same as available encoders.]),
145 [], [enable_decoders=SUPPORTED_FILTERS])
146 enable_decoders=`echo "$enable_decoders" | sed 's/,subblock//; s/,/ /g'`
147 if test "x$enable_decoders" = xno || test "x$enable_decoders" = x; then
148 AC_MSG_RESULT([(none)])
150 for arg in $enable_decoders
152 case $arg in m4_foreach([NAME], [SUPPORTED_FILTERS], [
154 enable_filter_[]NAME=yes
155 enable_decoder_[]NAME=yes
156 AC_DEFINE(HAVE_DECODER_[]m4_toupper(NAME), [1],
157 [Define to 1 if] NAME [decoder is enabled.])
161 AC_MSG_ERROR([unknown filter: $arg])
166 # LZMA2 requires that LZMA1 is enabled.
167 test "x$enable_encoder_lzma2" = xyes && enable_encoder_lzma1=yes
168 test "x$enable_decoder_lzma2" = xyes && enable_decoder_lzma1=yes
170 AC_MSG_RESULT([$enable_decoders])
173 if test "x$enable_encoder_lzma2$enable_encoder_lzma1" = xyesno \
174 || test "x$enable_decoder_lzma2$enable_decoder_lzma1" = xyesno; then
175 AC_MSG_ERROR([LZMA2 requires that LZMA1 is also enabled.])
178 m4_foreach([NAME], [SUPPORTED_FILTERS],
179 [AM_CONDITIONAL(COND_FILTER_[]m4_toupper(NAME), test "x$enable_filter_[]NAME" = xyes)
180 AM_CONDITIONAL(COND_ENCODER_[]m4_toupper(NAME), test "x$enable_encoder_[]NAME" = xyes)
181 AM_CONDITIONAL(COND_DECODER_[]m4_toupper(NAME), test "x$enable_decoder_[]NAME" = xyes)
184 # The so called "simple filters" share common code.
185 enable_filter_simple=no
186 enable_encoder_simple=no
187 enable_decoder_simple=no
188 m4_foreach([NAME], [SIMPLE_FILTERS],
189 [test "x$enable_filter_[]NAME" = xyes && enable_filter_simple=yes
190 test "x$enable_encoder_[]NAME" = xyes && enable_encoder_simple=yes
191 test "x$enable_decoder_[]NAME" = xyes && enable_decoder_simple=yes
193 AM_CONDITIONAL(COND_FILTER_SIMPLE, test "x$enable_filter_simple" = xyes)
194 AM_CONDITIONAL(COND_ENCODER_SIMPLE, test "x$enable_encoder_simple" = xyes)
195 AM_CONDITIONAL(COND_DECODER_SIMPLE, test "x$enable_decoder_simple" = xyes)
197 # LZ-based filters share common code.
201 m4_foreach([NAME], [LZ_FILTERS],
202 [test "x$enable_filter_[]NAME" = xyes && enable_filter_lz=yes
203 test "x$enable_encoder_[]NAME" = xyes && enable_encoder_lz=yes
204 test "x$enable_decoder_[]NAME" = xyes && enable_decoder_lz=yes
206 AM_CONDITIONAL(COND_FILTER_LZ, test "x$enable_filter_lz" = xyes)
207 AM_CONDITIONAL(COND_ENCODER_LZ, test "x$enable_encoder_lz" = xyes)
208 AM_CONDITIONAL(COND_DECODER_LZ, test "x$enable_decoder_lz" = xyes)
215 m4_define([SUPPORTED_MATCH_FINDERS], [hc3,hc4,bt2,bt3,bt4])
217 m4_foreach([NAME], [SUPPORTED_MATCH_FINDERS],
218 [enable_match_finder_[]NAME=no
221 AC_MSG_CHECKING([which match finders to build])
222 AC_ARG_ENABLE([match-finders], AC_HELP_STRING([--enable-match-finders=LIST],
223 [Comma-separated list of match finders to build. Default=all.
224 At least one match finder is required for encoding with
225 the LZMA1 and LZMA2 filters. Available match finders:]
226 m4_translit(m4_defn([SUPPORTED_MATCH_FINDERS]), [,], [ ])), [],
227 [enable_match_finders=SUPPORTED_MATCH_FINDERS])
228 enable_match_finders=`echo "$enable_match_finders" | sed 's/,/ /g'`
229 if test "x$enable_encoder" = xyes && test "x$enable_encoder_lz" = xyes ; then
230 for arg in $enable_match_finders
232 case $arg in m4_foreach([NAME], [SUPPORTED_MATCH_FINDERS], [
234 enable_match_finder_[]NAME=yes
235 AC_DEFINE(HAVE_MF_[]m4_toupper(NAME), [1],
236 [Define to 1 to enable] NAME [match finder.])
240 AC_MSG_ERROR([unknown match finder: $arg])
244 AC_MSG_RESULT([$enable_match_finders])
246 AC_MSG_RESULT([(none because not building any LZ-based encoder)])
254 m4_define([SUPPORTED_CHECKS], [crc32,crc64,sha256])
256 m4_foreach([NAME], [SUPPORTED_FILTERS],
257 [enable_check_[]NAME=no
260 AC_MSG_CHECKING([which integrity checks to build])
261 AC_ARG_ENABLE([checks], AC_HELP_STRING([--enable-checks=LIST],
262 [Comma-separated list of integrity checks to build.
263 Default=all. Available integrity checks:]
264 m4_translit(m4_defn([SUPPORTED_CHECKS]), [,], [ ])),
265 [], [enable_checks=SUPPORTED_CHECKS])
266 enable_checks=`echo "$enable_checks" | sed 's/,/ /g'`
267 if test "x$enable_checks" = xno || test "x$enable_checks" = x; then
268 AC_MSG_RESULT([(none)])
270 for arg in $enable_checks
272 case $arg in m4_foreach([NAME], [SUPPORTED_CHECKS], [
274 enable_check_[]NAME=yes
275 AC_DEFINE(HAVE_CHECK_[]m4_toupper(NAME), [1],
276 [Define to 1 if] NAME
277 [integrity check is enabled.])
281 AC_MSG_ERROR([unknown integrity check: $arg])
285 AC_MSG_RESULT([$enable_checks])
287 if test "x$enable_checks_crc32" = xno ; then
288 AC_MSG_ERROR([For now, the CRC32 check must always be enabled.])
291 m4_foreach([NAME], [SUPPORTED_CHECKS],
292 [AM_CONDITIONAL(COND_CHECK_[]m4_toupper(NAME), test "x$enable_check_[]NAME" = xyes)
296 ###########################
297 # Assembler optimizations #
298 ###########################
300 AC_MSG_CHECKING([if assembler optimizations should be used])
301 AC_ARG_ENABLE([assembler], AC_HELP_STRING([--disable-assembler],
302 [Do not use assembler optimizations even if such exist
303 for the architecture.]),
304 [], [enable_assembler=yes])
305 if test "x$enable_assembler" = xyes; then
307 i?86) enable_assembler=x86 ;;
308 x86_64) enable_assembler=x86_64 ;;
309 *) enable_assembler=no ;;
312 case $enable_assembler in
314 AC_DEFINE([HAVE_ASM_X86], [1],
315 [Define to 1 if using x86 assembler optimizations.])
318 AC_DEFINE([HAVE_ASM_X86_64], [1],
319 [Define to 1 if using x86_64 assembler optimizations.])
325 AC_MSG_ERROR([--enable-assembler accepts only \`yes', \`no', \`x86', or \`x86_64'.])
328 AC_MSG_RESULT([$enable_assembler])
329 AM_CONDITIONAL(COND_ASM_X86, test "x$enable_assembler" = xx86)
330 AM_CONDITIONAL(COND_ASM_X86_64, test "x$enable_assembler" = xx86_64)
333 ################################
334 # Fast unaligned memory access #
335 ################################
337 AC_MSG_CHECKING([if unaligned memory access should be used])
338 AC_ARG_ENABLE([unaligned-access], AC_HELP_STRING([--enable-unaligned-access],
339 [Enable if the system supports *fast* unaligned memory access
340 with 16-bit and 32-bit integers. By default, this is enabled
341 only on x86, x86_64, and big endian PowerPC.]),
342 [], [enable_unaligned_access=auto])
343 if test "x$enable_unaligned_access" = xauto ; then
345 i?86|x86_64|powerpc|powerpc64)
346 enable_unaligned_access=yes
349 enable_unaligned_access=no
353 if test "x$enable_unaligned_access" = xyes ; then
354 AC_DEFINE([HAVE_FAST_UNALIGNED_ACCESS], [1], [Define to 1 if
355 the system supports fast unaligned memory access.])
362 #####################
363 # Size optimization #
364 #####################
366 AC_MSG_CHECKING([if small size is preferred over speed])
367 AC_ARG_ENABLE([small], AC_HELP_STRING([--enable-small],
368 [Make liblzma smaller and a little slower.
369 This is disabled by default to optimize for speed.]),
370 [], [enable_small=no])
371 if test "x$enable_small" = xyes; then
372 AC_DEFINE([HAVE_SMALL], [1], [Define to 1 if optimizing for size.])
373 elif test "x$enable_small" != xno; then
375 AC_MSG_ERROR([--enable-small accepts only \`yes' or \`no'])
377 AC_MSG_RESULT([$enable_small])
378 AM_CONDITIONAL(COND_SMALL, test "x$enable_small" = xyes)
385 AC_MSG_CHECKING([if threading support is wanted])
386 AC_ARG_ENABLE([threads], AC_HELP_STRING([--disable-threads],
387 [Disable threading support.
388 This makes some things thread-unsafe.]),
389 [], [enable_threads=yes])
390 if test "x$enable_threads" != xyes && test "x$enable_threads" != xno; then
392 AC_MSG_ERROR([--enable-threads accepts only \`yes' or \`no'])
394 AC_MSG_RESULT([$enable_threads])
395 # We use the actual result a little later.
398 ############################################
399 # xz/xzdec/lzmadec linkage against liblzma #
400 ############################################
402 # Link the command line tool statically against liblzma unless using
403 # --enable-dynamic. Using static liblzma gives a little bit faster executable
404 # on x86, because no register is wasted for PIC. We also have one dependency
405 # less, which allows users to more freely copy the xz binary to other boxes.
406 # However, I wouldn't be surprised if distro maintainers still prefer dynamic
407 # linking, so let's make it easy for them.
409 AC_MSG_CHECKING([how command line tools should be linked against liblzma])
410 AC_ARG_ENABLE([dynamic], [AC_HELP_STRING([--enable-dynamic],
411 [Link command line tools dynamically against liblzma.
412 The default is to use static liblzma if it was
414 [], [enable_dynamic=no])
415 case $enable_dynamic in
419 AC_MSG_RESULT([dynamically])
422 STATIC_CPPFLAGS="-DLZMA_API_STATIC"
423 STATIC_LDFLAGS="-static"
424 AC_MSG_RESULT([statically])
428 AC_MSG_ERROR([--enable-dynamic accepts only \`yes' or \`no'])
431 AC_SUBST([STATIC_CPPFLAGS])
432 AC_SUBST([STATIC_LDFLAGS])
435 ###############################################################################
436 # Checks for programs.
437 ###############################################################################
440 echo "Initializing Automake:"
442 AM_INIT_AUTOMAKE([1.10 foreign tar-v7 filename-length-max=99])
446 if test x$ac_cv_prog_cc_c99 = xno ; then
447 AC_MSG_ERROR([No C99 compiler was found.])
452 AC_USE_SYSTEM_EXTENSIONS
454 if test "x$enable_threads" = xyes; then
456 echo "Threading support:"
458 LIBS="$LIBS $PTHREAD_LIBS"
459 AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS"
464 echo "Initializing Libtool:"
470 ###############################################################################
471 # Checks for libraries.
472 ###############################################################################
475 echo "Initializing gettext:"
476 AM_GNU_GETTEXT_VERSION([0.16.1])
477 AM_GNU_GETTEXT([external])
479 ###############################################################################
480 # Checks for header files.
481 ###############################################################################
484 echo "System headers and functions:"
486 # There is currently no workarounds in this package if some of
487 # these headers are missing.
488 AC_CHECK_HEADERS([fcntl.h limits.h sys/time.h],
490 [AC_MSG_ERROR([Required header file(s) are missing.])])
492 # If any of these headers are missing, things should still work correctly:
493 AC_CHECK_HEADERS([sys/param.h sys/sysctl.h byteswap.h],
495 #ifdef HAVE_SYS_PARAM_H
496 # include <sys/param.h>
500 # Even if we have byteswap.h, we may lack the specific macros/functions.
501 if test x$ac_cv_header_byteswap_h = xyes ; then
502 m4_foreach([FUNC], [bswap_16,bswap_32,bswap_64], [
503 AC_MSG_CHECKING([if FUNC is available])
504 AC_LINK_IFELSE([AC_LANG_SOURCE([
505 #include <byteswap.h>
513 AC_DEFINE(HAVE_[]m4_toupper(FUNC), [1],
514 [Define to 1 if] FUNC [is available.])
516 ], [AC_MSG_RESULT([no])])
522 ###############################################################################
523 # Checks for typedefs, structures, and compiler characteristics.
524 ###############################################################################
526 dnl We don't need these as long as we need a C99 compiler anyway.
540 AC_CHECK_SIZEOF([size_t])
542 # The command line tool can copy high resolution timestamps if such
543 # information is availabe in struct stat. Otherwise one second accuracy
546 struct stat.st_atim.tv_nsec,
547 struct stat.st_atimespec.tv_nsec,
548 struct stat.st_atimensec,
549 struct stat.st_uatime,
550 struct stat.st_atim.st__tim.tv_nsec])
556 ###############################################################################
557 # Checks for library functions.
558 ###############################################################################
560 # Gnulib replacements as needed
563 # Find the best function to set timestamps.
564 AC_CHECK_FUNCS([futimens futimes futimesat utimes utime], [break])
566 # Check how to find out the amount of physical memory in the system. The
567 # xz command line tool uses this to automatically limit its memory usage.
568 # - sysconf() gives all the needed info on GNU+Linux and Solaris.
569 # - BSDs use sysctl().
570 AC_MSG_CHECKING([how to detect the amount of physical memory])
571 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
577 i = sysconf(_SC_PAGESIZE);
578 i = sysconf(_SC_PHYS_PAGES);
582 AC_DEFINE([HAVE_PHYSMEM_SYSCONF], [1],
583 [Define to 1 if the amount of physical memory can be detected
584 with sysconf(_SC_PAGESIZE) and sysconf(_SC_PHYS_PAGES).])
585 AC_MSG_RESULT([sysconf])
587 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
588 #include <sys/types.h>
589 #ifdef HAVE_SYS_PARAM_H
590 # include <sys/param.h>
592 #include <sys/sysctl.h>
596 int name[2] = { CTL_HW, HW_PHYSMEM };
598 size_t mem_ptr_size = sizeof(mem);
599 sysctl(name, 2, &mem, &mem_ptr_size, NULL, NULL);
603 AC_DEFINE([HAVE_PHYSMEM_SYSCTL], [1],
604 [Define to 1 if the amount of physical memory can be detected
606 AC_MSG_RESULT([sysctl])
608 AC_MSG_RESULT([unknown])
611 # Check how to find out the number of available CPU cores in the system.
612 # sysconf(_SC_NPROCESSORS_ONLN) works on most systems, except that BSDs
614 AC_MSG_CHECKING([how to detect the number of available CPU cores])
615 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
621 i = sysconf(_SC_NPROCESSORS_ONLN);
625 AC_DEFINE([HAVE_NCPU_SYSCONF], [1],
626 [Define to 1 if the number of available CPU cores can be
627 detected with sysconf(_SC_NPROCESSORS_ONLN).])
628 AC_MSG_RESULT([sysconf])
630 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
631 #include <sys/types.h>
632 #ifdef HAVE_SYS_PARAM_H
633 # include <sys/param.h>
635 #include <sys/sysctl.h>
639 int name[2] = { CTL_HW, HW_NCPU };
641 size_t cpus_size = sizeof(cpus);
642 sysctl(name, 2, &cpus, &cpus_size, NULL, NULL);
646 AC_DEFINE([HAVE_NCPU_SYSCTL], [1],
647 [Define to 1 if the number of available CPU cores can be
648 detected with sysctl().])
649 AC_MSG_RESULT([sysctl])
651 AC_MSG_RESULT([unknown])
655 ###############################################################################
656 # If using GCC, set some additional AM_CFLAGS:
657 ###############################################################################
661 if test "x$GCC" = xyes ; then
663 echo "GCC extensions:"
665 if test -n "$CFLAG_VISIBILITY" ; then
666 AM_CFLAGS="$AM_CFLAGS $CFLAG_VISIBILITY"
669 # -Wno-uninitialized is needed with -Werror with SHA256 code
670 # to omit a bogus warning.
671 AC_MSG_CHECKING([if $CC accepts -Wno-uninitialized])
673 CFLAGS="$CFLAGS -Wno-uninitialized"
674 AC_COMPILE_IFELSE([void foo(void) { }], [Wno_uninitialized=yes])
676 AC_MSG_RESULT([$Wno_uninitialized])
678 # Enable as much warnings as possible. These commented warnings won't
679 # work for this package though:
680 # * -Wunreachable-code breaks several assert(0) cases, which are
681 # backed up with "return LZMA_PROG_ERROR".
682 # * -Wcast-qual would break various things where we need a non-const
683 # pointer although we don't modify anything through it.
684 # * -Wcast-align breaks optimized CRC32 and CRC64 implementation
685 # on some architectures (not on x86), where this warning is bogus,
686 # because we take care of correct alignment.
687 # * -Winline, -Wdisabled-optimization, -Wunsafe-loop-optimizations
688 # don't seem so useful here; at least the last one gives some
689 # warnings which are not bugs.
695 -Wmissing-include-dirs \
701 -Wbad-function-cast \
705 -Wstrict-prototypes \
706 -Wold-style-definition \
707 -Wmissing-prototypes \
708 -Wmissing-declarations \
712 AC_MSG_CHECKING([if $CC accepts $NEW_FLAG])
714 CFLAGS="$CFLAGS $NEW_FLAG"
715 AC_COMPILE_IFELSE([void foo(void) { }], [
716 AM_CFLAGS="$AM_CFLAGS $NEW_FLAG"
724 AC_ARG_ENABLE([werror],
725 AC_HELP_STRING([--enable-werror], [Enable -Werror to abort
726 compilation on all compiler warnings.]),
727 [], [enable_werror=no])
728 if test "x$enable_werror" = "xyes"; then
729 AM_CFLAGS="$AM_CFLAGS -Werror"
733 AM_CONDITIONAL([COND_WNO_UNINITIALIZED], test "x$Wno_uninitialized" = "xyes")
736 ###############################################################################
737 # Create the makefiles and config.h
738 ###############################################################################
742 # Don't build the lib directory at all if we don't need any replacement
744 AM_CONDITIONAL([COND_GNULIB], test -n "$LIBOBJS")
746 # Add default AM_CFLAGS.
747 AC_SUBST([AM_CFLAGS])
755 src/liblzma/liblzma.pc
757 src/liblzma/api/Makefile
758 src/liblzma/common/Makefile
759 src/liblzma/check/Makefile
760 src/liblzma/rangecoder/Makefile
761 src/liblzma/lz/Makefile
762 src/liblzma/lzma/Makefile
763 src/liblzma/subblock/Makefile
764 src/liblzma/delta/Makefile
765 src/liblzma/simple/Makefile