2 # Process this file with autoconf to produce a configure script.
4 ###############################################################################
8 # This file has been put into the public domain.
9 # You can do whatever you want with this file.
11 ###############################################################################
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.
20 AC_INIT([XZ Utils], m4_esyscmd([/bin/sh build-aux/version.sh]),
21 [lasse.collin@tukaani.org], [xz], [http://tukaani.org/xz/])
22 AC_CONFIG_SRCDIR([src/liblzma/common/common.h])
23 AC_CONFIG_AUX_DIR([build-aux])
24 AC_CONFIG_MACRO_DIR([m4])
25 AC_CONFIG_HEADER([config.h])
28 echo "$PACKAGE_STRING"
32 # This is needed to know if assembler optimizations can be used.
35 # We do some special things on Windows (32-bit or 64-bit) builds.
37 mingw* | cygwin*) is_w32=yes ;;
40 AM_CONDITIONAL([COND_W32], [test "$is_w32" = yes])
42 # We need to use $EXEEXT with $(LN_S) when creating symlinks to
43 # executables. Cygwin is an exception to this, since it is recommended
44 # that symlinks don't have the .exe suffix. To make this work, we
48 *) LN_EXEEXT='$(EXEEXT)' ;;
53 echo "Configure options:"
61 AC_MSG_CHECKING([if debugging code should be compiled])
62 AC_ARG_ENABLE([debug], AC_HELP_STRING([--enable-debug], [Enable debugging code.]),
64 if test "x$enable_debug" = xyes; then
67 AC_DEFINE([NDEBUG], [1], [Define to 1 to disable debugging code.])
76 m4_define([SUPPORTED_FILTERS], [lzma1,lzma2,delta,x86,powerpc,ia64,arm,armthumb,sparc])dnl
77 m4_define([SIMPLE_FILTERS], [x86,powerpc,ia64,arm,armthumb,sparc])
78 m4_define([LZ_FILTERS], [lzma1,lzma2])
80 m4_foreach([NAME], [SUPPORTED_FILTERS],
81 [enable_filter_[]NAME=no
82 enable_encoder_[]NAME=no
83 enable_decoder_[]NAME=no
86 AC_MSG_CHECKING([which encoders to build])
87 AC_ARG_ENABLE([encoders], AC_HELP_STRING([--enable-encoders=LIST],
88 [Comma-separated list of encoders to build. Default=all.
90 m4_translit(m4_defn([SUPPORTED_FILTERS]), [,], [ ])),
91 [], [enable_encoders=SUPPORTED_FILTERS])
92 enable_encoders=`echo "$enable_encoders" | sed 's/,/ /g'`
93 if test "x$enable_encoders" = xno || test "x$enable_encoders" = x; then
94 AC_MSG_RESULT([(none)])
96 AC_DEFINE([HAVE_ENCODER], [1],
97 [Define to 1 if encoder components are enabled.])
98 for arg in $enable_encoders
100 case $arg in m4_foreach([NAME], [SUPPORTED_FILTERS], [
102 enable_filter_[]NAME=yes
103 enable_encoder_[]NAME=yes
104 AC_DEFINE(HAVE_ENCODER_[]m4_toupper(NAME), [1],
105 [Define to 1 if] NAME [encoder is enabled.])
109 AC_MSG_ERROR([unknown filter: $arg])
113 AC_MSG_RESULT([$enable_encoders])
116 AC_MSG_CHECKING([which decoders to build])
117 AC_ARG_ENABLE([decoders], AC_HELP_STRING([--enable-decoders=LIST],
118 [Comma-separated list of decoders to build. Default=all.
119 Available decoders are the same as available encoders.]),
120 [], [enable_decoders=SUPPORTED_FILTERS])
121 enable_decoders=`echo "$enable_decoders" | sed 's/,/ /g'`
122 if test "x$enable_decoders" = xno || test "x$enable_decoders" = x; then
123 AC_MSG_RESULT([(none)])
125 AC_DEFINE([HAVE_DECODER], [1],
126 [Define to 1 if decoder components are enabled.])
127 for arg in $enable_decoders
129 case $arg in m4_foreach([NAME], [SUPPORTED_FILTERS], [
131 enable_filter_[]NAME=yes
132 enable_decoder_[]NAME=yes
133 AC_DEFINE(HAVE_DECODER_[]m4_toupper(NAME), [1],
134 [Define to 1 if] NAME [decoder is enabled.])
138 AC_MSG_ERROR([unknown filter: $arg])
143 # LZMA2 requires that LZMA1 is enabled.
144 test "x$enable_encoder_lzma2" = xyes && enable_encoder_lzma1=yes
145 test "x$enable_decoder_lzma2" = xyes && enable_decoder_lzma1=yes
147 AC_MSG_RESULT([$enable_decoders])
150 if test "x$enable_encoder_lzma2$enable_encoder_lzma1" = xyesno \
151 || test "x$enable_decoder_lzma2$enable_decoder_lzma1" = xyesno; then
152 AC_MSG_ERROR([LZMA2 requires that LZMA1 is also enabled.])
155 AM_CONDITIONAL(COND_MAIN_ENCODER, test "x$enable_encoders" != xno && test "x$enable_encoders" != x)
156 AM_CONDITIONAL(COND_MAIN_DECODER, test "x$enable_decoders" != xno && test "x$enable_decoders" != x)
158 m4_foreach([NAME], [SUPPORTED_FILTERS],
159 [AM_CONDITIONAL(COND_FILTER_[]m4_toupper(NAME), test "x$enable_filter_[]NAME" = xyes)
160 AM_CONDITIONAL(COND_ENCODER_[]m4_toupper(NAME), test "x$enable_encoder_[]NAME" = xyes)
161 AM_CONDITIONAL(COND_DECODER_[]m4_toupper(NAME), test "x$enable_decoder_[]NAME" = xyes)
164 # The so called "simple filters" share common code.
165 enable_filter_simple=no
166 enable_encoder_simple=no
167 enable_decoder_simple=no
168 m4_foreach([NAME], [SIMPLE_FILTERS],
169 [test "x$enable_filter_[]NAME" = xyes && enable_filter_simple=yes
170 test "x$enable_encoder_[]NAME" = xyes && enable_encoder_simple=yes
171 test "x$enable_decoder_[]NAME" = xyes && enable_decoder_simple=yes
173 AM_CONDITIONAL(COND_FILTER_SIMPLE, test "x$enable_filter_simple" = xyes)
174 AM_CONDITIONAL(COND_ENCODER_SIMPLE, test "x$enable_encoder_simple" = xyes)
175 AM_CONDITIONAL(COND_DECODER_SIMPLE, test "x$enable_decoder_simple" = xyes)
177 # LZ-based filters share common code.
181 m4_foreach([NAME], [LZ_FILTERS],
182 [test "x$enable_filter_[]NAME" = xyes && enable_filter_lz=yes
183 test "x$enable_encoder_[]NAME" = xyes && enable_encoder_lz=yes
184 test "x$enable_decoder_[]NAME" = xyes && enable_decoder_lz=yes
186 AM_CONDITIONAL(COND_FILTER_LZ, test "x$enable_filter_lz" = xyes)
187 AM_CONDITIONAL(COND_ENCODER_LZ, test "x$enable_encoder_lz" = xyes)
188 AM_CONDITIONAL(COND_DECODER_LZ, test "x$enable_decoder_lz" = xyes)
195 m4_define([SUPPORTED_MATCH_FINDERS], [hc3,hc4,bt2,bt3,bt4])
197 m4_foreach([NAME], [SUPPORTED_MATCH_FINDERS],
198 [enable_match_finder_[]NAME=no
201 AC_MSG_CHECKING([which match finders to build])
202 AC_ARG_ENABLE([match-finders], AC_HELP_STRING([--enable-match-finders=LIST],
203 [Comma-separated list of match finders to build. Default=all.
204 At least one match finder is required for encoding with
205 the LZMA1 and LZMA2 filters. Available match finders:]
206 m4_translit(m4_defn([SUPPORTED_MATCH_FINDERS]), [,], [ ])), [],
207 [enable_match_finders=SUPPORTED_MATCH_FINDERS])
208 enable_match_finders=`echo "$enable_match_finders" | sed 's/,/ /g'`
209 if test "x$enable_encoder_lz" = xyes ; then
210 for arg in $enable_match_finders
212 case $arg in m4_foreach([NAME], [SUPPORTED_MATCH_FINDERS], [
214 enable_match_finder_[]NAME=yes
215 AC_DEFINE(HAVE_MF_[]m4_toupper(NAME), [1],
216 [Define to 1 to enable] NAME [match finder.])
220 AC_MSG_ERROR([unknown match finder: $arg])
224 AC_MSG_RESULT([$enable_match_finders])
226 AC_MSG_RESULT([(none because not building any LZ-based encoder)])
234 m4_define([SUPPORTED_CHECKS], [crc32,crc64,sha256])
236 m4_foreach([NAME], [SUPPORTED_FILTERS],
237 [enable_check_[]NAME=no
240 AC_MSG_CHECKING([which integrity checks to build])
241 AC_ARG_ENABLE([checks], AC_HELP_STRING([--enable-checks=LIST],
242 [Comma-separated list of integrity checks to build.
243 Default=all. Available integrity checks:]
244 m4_translit(m4_defn([SUPPORTED_CHECKS]), [,], [ ])),
245 [], [enable_checks=SUPPORTED_CHECKS])
246 enable_checks=`echo "$enable_checks" | sed 's/,/ /g'`
247 if test "x$enable_checks" = xno || test "x$enable_checks" = x; then
248 AC_MSG_RESULT([(none)])
250 for arg in $enable_checks
252 case $arg in m4_foreach([NAME], [SUPPORTED_CHECKS], [
254 enable_check_[]NAME=yes
255 AC_DEFINE(HAVE_CHECK_[]m4_toupper(NAME), [1],
256 [Define to 1 if] NAME
257 [integrity check is enabled.])
261 AC_MSG_ERROR([unknown integrity check: $arg])
265 AC_MSG_RESULT([$enable_checks])
267 if test "x$enable_checks_crc32" = xno ; then
268 AC_MSG_ERROR([For now, the CRC32 check must always be enabled.])
271 m4_foreach([NAME], [SUPPORTED_CHECKS],
272 [AM_CONDITIONAL(COND_CHECK_[]m4_toupper(NAME), test "x$enable_check_[]NAME" = xyes)
276 ###########################
277 # Assembler optimizations #
278 ###########################
280 AC_MSG_CHECKING([if assembler optimizations should be used])
281 AC_ARG_ENABLE([assembler], AC_HELP_STRING([--disable-assembler],
282 [Do not use assembler optimizations even if such exist
283 for the architecture.]),
284 [], [enable_assembler=yes])
285 if test "x$enable_assembler" = xyes; then
288 # Darwin should work too but only if not creating universal
289 # binaries. Solaris x86 could work too but I cannot test.
290 linux* | *bsd* | mingw* | cygwin*)
292 i?86) enable_assembler=x86 ;;
293 x86_64) enable_assembler=x86_64 ;;
298 case $enable_assembler in
300 AC_MSG_RESULT([$enable_assembler])
304 AC_MSG_ERROR([--enable-assembler accepts only \`yes', \`no', \`x86', or \`x86_64'.])
307 AM_CONDITIONAL(COND_ASM_X86, test "x$enable_assembler" = xx86)
308 AM_CONDITIONAL(COND_ASM_X86_64, test "x$enable_assembler" = xx86_64)
311 #####################
312 # Size optimization #
313 #####################
315 AC_MSG_CHECKING([if small size is preferred over speed])
316 AC_ARG_ENABLE([small], AC_HELP_STRING([--enable-small],
317 [Make liblzma smaller and a little slower.
318 This is disabled by default to optimize for speed.]),
319 [], [enable_small=no])
320 if test "x$enable_small" = xyes; then
321 AC_DEFINE([HAVE_SMALL], [1], [Define to 1 if optimizing for size.])
322 elif test "x$enable_small" != xno; then
324 AC_MSG_ERROR([--enable-small accepts only \`yes' or \`no'])
326 AC_MSG_RESULT([$enable_small])
327 AM_CONDITIONAL(COND_SMALL, test "x$enable_small" = xyes)
334 AC_MSG_CHECKING([if threading support is wanted])
335 AC_ARG_ENABLE([threads], AC_HELP_STRING([--disable-threads],
336 [Disable threading support.
337 This makes some things thread-unsafe.]),
338 [], [enable_threads=yes])
339 if test "x$enable_threads" != xyes && test "x$enable_threads" != xno; then
341 AC_MSG_ERROR([--enable-threads accepts only \`yes' or \`no'])
343 AC_MSG_RESULT([$enable_threads])
344 # We use the actual result a little later.
347 #########################
348 # Assumed amount of RAM #
349 #########################
351 # We use 128 MiB as default, because it will allow decompressing files
352 # created with "xz -9". It would be slightly safer to guess a lower value,
353 # but most systems, on which we don't have any way to determine the amount
354 # of RAM, will probably have at least 128 MiB of RAM.
355 AC_MSG_CHECKING([how much RAM to assume if the real amount is unknown])
356 AC_ARG_ENABLE([assume-ram], AC_HELP_STRING([--enable-assume-ram=SIZE],
357 [If and only if the real amount of RAM cannot be determined,
358 assume SIZE MiB. The default is 128 MiB. This affects the
359 default memory usage limit.]),
360 [], [enable_assume_ram=128])
361 assume_ram_check=`echo "$enable_assume_ram" | tr -d 0123456789`
362 if test -z "$enable_assume_ram" || test -n "$assume_ram_check"; then
364 AC_MSG_ERROR([--enable-assume-ram accepts only an integer argument])
366 AC_MSG_RESULT([$enable_assume_ram MiB])
367 AC_DEFINE_UNQUOTED([ASSUME_RAM], [$enable_assume_ram],
368 [How many MiB of RAM to assume if the real amount cannot
372 ###############################################################################
373 # Checks for programs.
374 ###############################################################################
378 if test -z "$POSIX_SHELL" ; then
379 AC_MSG_ERROR([No POSIX conforming shell (sh) was found.])
383 echo "Initializing Automake:"
385 AM_INIT_AUTOMAKE([1.10 foreign tar-v7 filename-length-max=99])
389 if test x$ac_cv_prog_cc_c99 = xno ; then
390 AC_MSG_ERROR([No C99 compiler was found.])
395 AC_USE_SYSTEM_EXTENSIONS
397 if test "x$enable_threads" = xyes; then
399 echo "Threading support:"
401 LIBS="$LIBS $PTHREAD_LIBS"
402 AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS"
407 echo "Initializing Libtool:"
410 LT_LANG([Windows Resource])
412 # This is a bit wrong since it is possible to request that only some libs
413 # are built as shared. Using that feature isn't so common though, and this
414 # breaks only on Windows (at least for now) if the user enables only some
416 AM_CONDITIONAL([COND_SHARED], [test "x$enable_shared" != xno])
419 ###############################################################################
420 # Checks for libraries.
421 ###############################################################################
424 echo "Initializing gettext:"
425 AM_GNU_GETTEXT_VERSION([0.16.1])
426 AM_GNU_GETTEXT([external])
428 ###############################################################################
429 # Checks for header files.
430 ###############################################################################
433 echo "System headers and functions:"
435 # There is currently no workarounds in this package if some of
436 # these headers are missing.
437 AC_CHECK_HEADERS([fcntl.h limits.h sys/time.h],
439 [AC_MSG_ERROR([Required header file(s) are missing.])])
442 ###############################################################################
443 # Checks for typedefs, structures, and compiler characteristics.
444 ###############################################################################
446 dnl We don't need these as long as we need a C99 compiler anyway.
460 AC_CHECK_SIZEOF([size_t])
462 # The command line tool can copy high resolution timestamps if such
463 # information is availabe in struct stat. Otherwise one second accuracy
466 struct stat.st_atim.tv_nsec,
467 struct stat.st_atimespec.tv_nsec,
468 struct stat.st_atimensec,
469 struct stat.st_uatime,
470 struct stat.st_atim.st__tim.tv_nsec])
476 ###############################################################################
477 # Checks for library functions.
478 ###############################################################################
480 # Gnulib replacements as needed
483 # Find the best function to set timestamps.
484 AC_CHECK_FUNCS([futimens futimes futimesat utimes utime], [break])
493 ###############################################################################
494 # If using GCC, set some additional AM_CFLAGS:
495 ###############################################################################
497 if test "$GCC" = yes ; then
499 echo "GCC extensions:"
502 # Always do the visibility check but don't set AM_CFLAGS on Windows.
503 # This way things get set properly even on Windows.
505 if test -n "$CFLAG_VISIBILITY" && test "$is_w32" = no; then
506 AM_CFLAGS="$AM_CFLAGS $CFLAG_VISIBILITY"
509 if test "$GCC" = yes ; then
510 # Enable as much warnings as possible. These commented warnings won't
511 # work for this package though:
512 # * -Wunreachable-code breaks several assert(0) cases, which are
513 # backed up with "return LZMA_PROG_ERROR".
514 # * -Wcast-qual would break various things where we need a non-const
515 # pointer although we don't modify anything through it.
516 # * -Wcast-align breaks optimized CRC32 and CRC64 implementation
517 # on some architectures (not on x86), where this warning is bogus,
518 # because we take care of correct alignment.
519 # * -Winline, -Wdisabled-optimization, -Wunsafe-loop-optimizations
520 # don't seem so useful here; at least the last one gives some
521 # warnings which are not bugs.
527 -Wmissing-include-dirs \
533 -Wbad-function-cast \
537 -Wstrict-prototypes \
538 -Wold-style-definition \
539 -Wmissing-prototypes \
540 -Wmissing-declarations \
544 AC_MSG_CHECKING([if $CC accepts $NEW_FLAG])
546 CFLAGS="$CFLAGS $NEW_FLAG"
547 AC_COMPILE_IFELSE([AC_LANG_SOURCE([void foo(void) { }])], [
548 AM_CFLAGS="$AM_CFLAGS $NEW_FLAG"
556 AC_ARG_ENABLE([werror],
557 AC_HELP_STRING([--enable-werror], [Enable -Werror to abort
558 compilation on all compiler warnings.]),
559 [], [enable_werror=no])
560 if test "x$enable_werror" = "xyes"; then
561 AM_CFLAGS="$AM_CFLAGS -Werror"
566 ###############################################################################
567 # Create the makefiles and config.h
568 ###############################################################################
572 # Don't build the lib directory at all if we don't need any replacement
574 AM_CONDITIONAL([COND_GNULIB], test -n "$LIBOBJS")
576 # Add default AM_CFLAGS.
577 AC_SUBST([AM_CFLAGS])
579 # This is needed for src/scripts.
580 xz=`echo xz | sed "$program_transform_name"`
589 src/liblzma/liblzma.pc
591 src/liblzma/api/Makefile
594 src/lzmainfo/Makefile
607 if test x$tuklib_cv_physmem_method = xunknown; then
610 echo "No supported method to detect the amount of RAM."
611 echo "Consider using --enable-assume-ram (if you didn't already)"
612 echo "or make a patch to add support for this operating system."
615 # Not threading yet so don't warn.
616 #if test x$tuklib_cv_cpucores_method = xunknown; then
619 # echo "No supported method to detect the number of CPU cores."