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xz-archive/configure.ac
Jia Tan c5f6d79cc9 Build: Add support for ARM64 CRC32 instruction detection. 
This adds --enable-arm64-crc32/--disable-arm64-crc32 (enabled by
default) for using the ARM64 CRC32 instruction. This can be disabled if
one knows the binary will never need to run on an ARM64 machine
with this instruction extension.
2024-02-01 20:09:09 +08:00

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# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
###############################################################################
#
# Author: Lasse Collin
#
# This file has been put into the public domain.
# You can do whatever you want with this file.
#
###############################################################################
# NOTE: Don't add useless checks. autoscan detects this and that, but don't
# let it confuse you. For example, we don't care about checking for behavior
# of malloc(), stat(), or lstat(), since we don't use those functions in
# a way that would cause the problems the autoconf macros check.
AC_PREREQ([2.69])
AC_INIT([XZ Utils], m4_esyscmd([/bin/sh build-aux/version.sh]),
[xz@tukaani.org], [xz], [https://xz.tukaani.org/xz-utils/])
AC_CONFIG_SRCDIR([src/liblzma/common/common.h])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_HEADERS([config.h])
echo
echo "$PACKAGE_STRING"
echo
echo "System type:"
# This is needed to know if assembler optimizations can be used.
AC_CANONICAL_HOST
# We do some special things on Windows (32-bit or 64-bit) builds.
case $host_os in
mingw* | cygwin | msys) is_w32=yes ;;
*) is_w32=no ;;
esac
AM_CONDITIONAL([COND_W32], [test "$is_w32" = yes])
# We need to use $EXEEXT with $(LN_S) when creating symlinks to
# executables. Cygwin is an exception to this, since it is recommended
# that symlinks don't have the .exe suffix. To make this work, we
# define LN_EXEEXT.
#
# MSYS2 is treated the same way as Cygwin. It uses plain "msys" like
# the original MSYS when building MSYS/MSYS2-binaries. Hopefully this
# doesn't break things for the original MSYS developers. Note that this
# doesn't affect normal MSYS/MSYS2 users building non-MSYS/MSYS2 binaries
# since in that case the $host_os is usually mingw32.
case $host_os in
cygwin | msys) LN_EXEEXT= ;;
*) LN_EXEEXT='$(EXEEXT)' ;;
esac
AC_SUBST([LN_EXEEXT])
echo
echo "Configure options:"
AM_CFLAGS=
#############
# Debugging #
#############
AC_MSG_CHECKING([if debugging code should be compiled])
AC_ARG_ENABLE([debug], AS_HELP_STRING([--enable-debug], [Enable debugging code.]),
[], enable_debug=no)
if test "x$enable_debug" = xyes; then
AC_MSG_RESULT([yes])
else
AC_DEFINE([NDEBUG], [1], [Define to 1 to disable debugging code.])
AC_MSG_RESULT([no])
fi
###########
# Filters #
###########
m4_define([SUPPORTED_FILTERS], [lzma1,lzma2,delta,x86,powerpc,ia64,arm,armthumb,arm64,sparc,riscv])dnl
m4_define([SIMPLE_FILTERS], [x86,powerpc,ia64,arm,armthumb,arm64,sparc,riscv])
m4_define([LZ_FILTERS], [lzma1,lzma2])
m4_foreach([NAME], [SUPPORTED_FILTERS],
[enable_filter_[]NAME=no
enable_encoder_[]NAME=no
enable_decoder_[]NAME=no
])dnl
AC_MSG_CHECKING([which encoders to build])
AC_ARG_ENABLE([encoders], AS_HELP_STRING([--enable-encoders=LIST],
[Comma-separated list of encoders to build. Default=all.
Available encoders:]
m4_translit(m4_defn([SUPPORTED_FILTERS]), [,], [ ])),
[], [enable_encoders=SUPPORTED_FILTERS])
enable_encoders=`echo "$enable_encoders" | sed 's/,/ /g'`
if test "x$enable_encoders" = xno || test "x$enable_encoders" = x; then
enable_encoders=no
AC_MSG_RESULT([(none)])
else
for arg in $enable_encoders
do
case $arg in m4_foreach([NAME], [SUPPORTED_FILTERS], [
NAME)
enable_filter_[]NAME=yes
enable_encoder_[]NAME=yes
AC_DEFINE(HAVE_ENCODER_[]m4_toupper(NAME), [1],
[Define to 1 if] NAME [encoder is enabled.])
;;])
*)
AC_MSG_RESULT([])
AC_MSG_ERROR([unknown filter: $arg])
;;
esac
done
AC_DEFINE([HAVE_ENCODERS], [1],
[Define to 1 if any of HAVE_ENCODER_foo have been defined.])
AC_MSG_RESULT([$enable_encoders])
fi
AC_MSG_CHECKING([which decoders to build])
AC_ARG_ENABLE([decoders], AS_HELP_STRING([--enable-decoders=LIST],
[Comma-separated list of decoders to build. Default=all.
Available decoders are the same as available encoders.]),
[], [enable_decoders=SUPPORTED_FILTERS])
enable_decoders=`echo "$enable_decoders" | sed 's/,/ /g'`
if test "x$enable_decoders" = xno || test "x$enable_decoders" = x; then
enable_decoders=no
AC_MSG_RESULT([(none)])
else
for arg in $enable_decoders
do
case $arg in m4_foreach([NAME], [SUPPORTED_FILTERS], [
NAME)
enable_filter_[]NAME=yes
enable_decoder_[]NAME=yes
AC_DEFINE(HAVE_DECODER_[]m4_toupper(NAME), [1],
[Define to 1 if] NAME [decoder is enabled.])
;;])
*)
AC_MSG_RESULT([])
AC_MSG_ERROR([unknown filter: $arg])
;;
esac
done
AC_DEFINE([HAVE_DECODERS], [1],
[Define to 1 if any of HAVE_DECODER_foo have been defined.])
AC_MSG_RESULT([$enable_decoders])
fi
if test "x$enable_encoder_lzma2$enable_encoder_lzma1" = xyesno \
|| test "x$enable_decoder_lzma2$enable_decoder_lzma1" = xyesno; then
AC_MSG_ERROR([LZMA2 requires that LZMA1 is also enabled.])
fi
AM_CONDITIONAL(COND_MAIN_ENCODER, test "x$enable_encoders" != xno)
AM_CONDITIONAL(COND_MAIN_DECODER, test "x$enable_decoders" != xno)
m4_foreach([NAME], [SUPPORTED_FILTERS],
[AM_CONDITIONAL(COND_FILTER_[]m4_toupper(NAME), test "x$enable_filter_[]NAME" = xyes)
AM_CONDITIONAL(COND_ENCODER_[]m4_toupper(NAME), test "x$enable_encoder_[]NAME" = xyes)
AM_CONDITIONAL(COND_DECODER_[]m4_toupper(NAME), test "x$enable_decoder_[]NAME" = xyes)
])dnl
# The so called "simple filters" share common code.
enable_filter_simple=no
enable_encoder_simple=no
enable_decoder_simple=no
m4_foreach([NAME], [SIMPLE_FILTERS],
[test "x$enable_filter_[]NAME" = xyes && enable_filter_simple=yes
test "x$enable_encoder_[]NAME" = xyes && enable_encoder_simple=yes
test "x$enable_decoder_[]NAME" = xyes && enable_decoder_simple=yes
])dnl
AM_CONDITIONAL(COND_FILTER_SIMPLE, test "x$enable_filter_simple" = xyes)
AM_CONDITIONAL(COND_ENCODER_SIMPLE, test "x$enable_encoder_simple" = xyes)
AM_CONDITIONAL(COND_DECODER_SIMPLE, test "x$enable_decoder_simple" = xyes)
# LZ-based filters share common code.
enable_filter_lz=no
enable_encoder_lz=no
enable_decoder_lz=no
m4_foreach([NAME], [LZ_FILTERS],
[test "x$enable_filter_[]NAME" = xyes && enable_filter_lz=yes
test "x$enable_encoder_[]NAME" = xyes && enable_encoder_lz=yes
test "x$enable_decoder_[]NAME" = xyes && enable_decoder_lz=yes
])dnl
AM_CONDITIONAL(COND_FILTER_LZ, test "x$enable_filter_lz" = xyes)
AM_CONDITIONAL(COND_ENCODER_LZ, test "x$enable_encoder_lz" = xyes)
AM_CONDITIONAL(COND_DECODER_LZ, test "x$enable_decoder_lz" = xyes)
#################
# Match finders #
#################
m4_define([SUPPORTED_MATCH_FINDERS], [hc3,hc4,bt2,bt3,bt4])
m4_foreach([NAME], [SUPPORTED_MATCH_FINDERS],
[enable_match_finder_[]NAME=no
])
AC_MSG_CHECKING([which match finders to build])
AC_ARG_ENABLE([match-finders], AS_HELP_STRING([--enable-match-finders=LIST],
[Comma-separated list of match finders to build. Default=all.
At least one match finder is required for encoding with
the LZMA1 and LZMA2 filters. Available match finders:]
m4_translit(m4_defn([SUPPORTED_MATCH_FINDERS]), [,], [ ])), [],
[enable_match_finders=SUPPORTED_MATCH_FINDERS])
enable_match_finders=`echo "$enable_match_finders" | sed 's/,/ /g'`
if test "x$enable_encoder_lz" = xyes ; then
if test -z "$enable_match_finders"; then
AC_MSG_ERROR([At least one match finder is required for an LZ-based encoder.])
fi
for arg in $enable_match_finders
do
case $arg in m4_foreach([NAME], [SUPPORTED_MATCH_FINDERS], [
NAME)
enable_match_finder_[]NAME=yes
AC_DEFINE(HAVE_MF_[]m4_toupper(NAME), [1],
[Define to 1 to enable] NAME [match finder.])
;;])
*)
AC_MSG_RESULT([])
AC_MSG_ERROR([unknown match finder: $arg])
;;
esac
done
AC_MSG_RESULT([$enable_match_finders])
else
AC_MSG_RESULT([(none because not building any LZ-based encoder)])
fi
####################
# Integrity checks #
####################
m4_define([SUPPORTED_CHECKS], [crc32,crc64,sha256])
m4_foreach([NAME], [SUPPORTED_CHECKS],
[enable_check_[]NAME=no
])dnl
AC_MSG_CHECKING([which integrity checks to build])
AC_ARG_ENABLE([checks], AS_HELP_STRING([--enable-checks=LIST],
[Comma-separated list of integrity checks to build.
Default=all. Available integrity checks:]
m4_translit(m4_defn([SUPPORTED_CHECKS]), [,], [ ])),
[], [enable_checks=SUPPORTED_CHECKS])
enable_checks=`echo "$enable_checks" | sed 's/,/ /g'`
if test "x$enable_checks" = xno || test "x$enable_checks" = x; then
AC_MSG_RESULT([(none)])
else
for arg in $enable_checks
do
case $arg in m4_foreach([NAME], [SUPPORTED_CHECKS], [
NAME)
enable_check_[]NAME=yes
AC_DEFINE(HAVE_CHECK_[]m4_toupper(NAME), [1],
[Define to 1 if] NAME
[integrity check is enabled.])
;;])
*)
AC_MSG_RESULT([])
AC_MSG_ERROR([unknown integrity check: $arg])
;;
esac
done
AC_MSG_RESULT([$enable_checks])
fi
if test "x$enable_check_crc32" = xno ; then
AC_MSG_ERROR([For now, the CRC32 check must always be enabled.])
fi
m4_foreach([NAME], [SUPPORTED_CHECKS],
[AM_CONDITIONAL(COND_CHECK_[]m4_toupper(NAME), test "x$enable_check_[]NAME" = xyes)
])dnl
AC_MSG_CHECKING([if external SHA-256 should be used])
AC_ARG_ENABLE([external-sha256], AS_HELP_STRING([--enable-external-sha256],
[Use SHA-256 code from the operating system.
See INSTALL for possible subtle problems.]),
[], [enable_external_sha256=no])
if test "x$enable_check_sha256" != "xyes"; then
enable_external_sha256=no
fi
if test "x$enable_external_sha256" = xyes; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
#############
# MicroLZMA #
#############
AC_MSG_CHECKING([if MicroLZMA support should be built])
AC_ARG_ENABLE([microlzma], AS_HELP_STRING([--disable-microlzma],
[Do not build MicroLZMA encoder and decoder.
It is needed by specific applications only,
for example, erofs-utils.]),
[], [enable_microlzma=yes])
case $enable_microlzma in
yes | no)
AC_MSG_RESULT([$enable_microlzma])
;;
*)
AC_MSG_RESULT([])
AC_MSG_ERROR([--enable-microlzma accepts only 'yes' or 'no'.])
;;
esac
AM_CONDITIONAL(COND_MICROLZMA, test "x$enable_microlzma" = xyes)
#############################
# .lz (lzip) format support #
#############################
AC_MSG_CHECKING([if .lz (lzip) decompression support should be built])
AC_ARG_ENABLE([lzip-decoder], AS_HELP_STRING([--disable-lzip-decoder],
[Disable decompression support for .lz (lzip) files.]),
[], [enable_lzip_decoder=yes])
if test "x$enable_decoder_lzma1" != xyes; then
enable_lzip_decoder=no
AC_MSG_RESULT([no because LZMA1 decoder is disabled])
elif test "x$enable_lzip_decoder" = xyes; then
AC_DEFINE([HAVE_LZIP_DECODER], [1],
[Define to 1 if .lz (lzip) decompression support is enabled.])
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
AM_CONDITIONAL(COND_LZIP_DECODER, test "x$enable_lzip_decoder" = xyes)
###########################
# Assembler optimizations #
###########################
AC_MSG_CHECKING([if assembler optimizations should be used])
AC_ARG_ENABLE([assembler], AS_HELP_STRING([--disable-assembler],
[Do not use assembler optimizations even if such exist
for the architecture.]),
[], [enable_assembler=yes])
if test "x$enable_assembler" = xyes; then
enable_assembler=no
case $host_os in
# Darwin should work too but only if not creating universal
# binaries. Solaris x86 could work too but I cannot test.
linux* | *bsd* | mingw* | cygwin | msys | *djgpp*)
case $host_cpu in
i?86) enable_assembler=x86 ;;
esac
;;
esac
fi
case $enable_assembler in
x86 | no)
AC_MSG_RESULT([$enable_assembler])
;;
*)
AC_MSG_RESULT([])
AC_MSG_ERROR([--enable-assembler accepts only 'yes', 'no', or 'x86' (32-bit).])
;;
esac
AM_CONDITIONAL(COND_ASM_X86, test "x$enable_assembler" = xx86)
#############
# CLMUL CRC #
#############
AC_ARG_ENABLE([clmul-crc], AS_HELP_STRING([--disable-clmul-crc],
[Do not use carryless multiplication for CRC calculation
even if support for it is detected.]),
[], [enable_clmul_crc=yes])
############################
# ARM64 CRC32 Instructions #
############################
AC_ARG_ENABLE([arm64-crc32], AS_HELP_STRING([--disable-arm64-crc32],
[Do not use ARM64 CRC32 instructions even if support for it
is detected.]),
[], [enable_arm64_crc32=yes])
#####################
# Size optimization #
#####################
AC_MSG_CHECKING([if small size is preferred over speed])
AC_ARG_ENABLE([small], AS_HELP_STRING([--enable-small],
[Make liblzma smaller and a little slower.
This is disabled by default to optimize for speed.]),
[], [enable_small=no])
if test "x$enable_small" = xyes; then
AC_DEFINE([HAVE_SMALL], [1], [Define to 1 if optimizing for size.])
elif test "x$enable_small" != xno; then
AC_MSG_RESULT([])
AC_MSG_ERROR([--enable-small accepts only 'yes' or 'no'])
fi
AC_MSG_RESULT([$enable_small])
AM_CONDITIONAL(COND_SMALL, test "x$enable_small" = xyes)
#############
# Threading #
#############
AC_MSG_CHECKING([if threading support is wanted])
AC_ARG_ENABLE([threads], AS_HELP_STRING([--enable-threads=METHOD],
[Supported METHODS are 'yes', 'no', 'posix', 'win95', and
'vista'. The default is 'yes'. Using 'no' together with
--enable-small makes liblzma thread unsafe.]),
[], [enable_threads=yes])
if test "x$enable_threads" = xyes; then
case $host_os in
mingw*)
case $host_cpu in
i?86) enable_threads=win95 ;;
*) enable_threads=vista ;;
esac
;;
*)
enable_threads=posix
;;
esac
fi
case $enable_threads in
posix | win95 | vista)
AC_MSG_RESULT([yes, $enable_threads])
;;
no)
AC_MSG_RESULT([no])
;;
*)
AC_MSG_RESULT([])
AC_MSG_ERROR([--enable-threads only accepts 'yes', 'no', 'posix', 'win95', or 'vista'])
;;
esac
# We use the actual result a little later.
#########################
# Assumed amount of RAM #
#########################
# We use 128 MiB as default, because it will allow decompressing files
# created with "xz -9". It would be slightly safer to guess a lower value,
# but most systems, on which we don't have any way to determine the amount
# of RAM, will probably have at least 128 MiB of RAM.
AC_MSG_CHECKING([how much RAM to assume if the real amount is unknown])
AC_ARG_ENABLE([assume-ram], AS_HELP_STRING([--enable-assume-ram=SIZE],
[If and only if the real amount of RAM cannot be determined,
assume SIZE MiB. The default is 128 MiB. This affects the
default memory usage limit.]),
[], [enable_assume_ram=128])
assume_ram_check=`echo "$enable_assume_ram" | tr -d 0123456789`
if test -z "$enable_assume_ram" || test -n "$assume_ram_check"; then
AC_MSG_RESULT([])
AC_MSG_ERROR([--enable-assume-ram accepts only an integer argument])
fi
AC_MSG_RESULT([$enable_assume_ram MiB])
AC_DEFINE_UNQUOTED([ASSUME_RAM], [$enable_assume_ram],
[How many MiB of RAM to assume if the real amount cannot
be determined.])
#########################
# Components to install #
#########################
AC_ARG_ENABLE([xz], [AS_HELP_STRING([--disable-xz],
[do not build the xz tool])],
[], [enable_xz=yes])
AM_CONDITIONAL([COND_XZ], [test x$enable_xz != xno])
AC_ARG_ENABLE([xzdec], [AS_HELP_STRING([--disable-xzdec],
[do not build xzdec])],
[], [enable_xzdec=yes])
test "x$enable_decoders" = xno && enable_xzdec=no
AM_CONDITIONAL([COND_XZDEC], [test x$enable_xzdec != xno])
AC_ARG_ENABLE([lzmadec], [AS_HELP_STRING([--disable-lzmadec],
[do not build lzmadec
(it exists primarily for LZMA Utils compatibility)])],
[], [enable_lzmadec=yes])
test "x$enable_decoder_lzma1" = xno && enable_lzmadec=no
AM_CONDITIONAL([COND_LZMADEC], [test x$enable_lzmadec != xno])
AC_ARG_ENABLE([lzmainfo], [AS_HELP_STRING([--disable-lzmainfo],
[do not build lzmainfo
(it exists primarily for LZMA Utils compatibility)])],
[], [enable_lzmainfo=yes])
test "x$enable_decoder_lzma1" = xno && enable_lzmainfo=no
AM_CONDITIONAL([COND_LZMAINFO], [test x$enable_lzmainfo != xno])
AC_ARG_ENABLE([lzma-links], [AS_HELP_STRING([--disable-lzma-links],
[do not create symlinks for LZMA Utils compatibility])],
[], [enable_lzma_links=yes])
AM_CONDITIONAL([COND_LZMALINKS], [test x$enable_lzma_links != xno])
AC_ARG_ENABLE([scripts], [AS_HELP_STRING([--disable-scripts],
[do not install the scripts xzdiff, xzgrep, xzless, xzmore,
and their symlinks])],
[], [enable_scripts=yes])
AM_CONDITIONAL([COND_SCRIPTS], [test x$enable_scripts != xno])
AC_ARG_ENABLE([doc], [AS_HELP_STRING([--disable-doc],
[do not install documentation files to docdir
(man pages will still be installed)])],
[], [enable_doc=yes])
AM_CONDITIONAL([COND_DOC], [test x$enable_doc != xno])
##############
# Sandboxing #
##############
AC_MSG_CHECKING([if sandboxing should be used])
AC_ARG_ENABLE([sandbox], [AS_HELP_STRING([--enable-sandbox=METHOD],
[Sandboxing METHOD can be
'auto', 'no', 'capsicum', 'pledge', or 'landlock'.
The default is 'auto' which enables sandboxing if
a supported sandboxing method is found.])],
[], [enable_sandbox=auto])
case $enable_xzdec-$enable_xz-$enable_sandbox in
no-no-*)
enable_sandbox=no
AC_MSG_RESULT([no, --disable-xz and --disable-xzdec was used])
;;
*-*-auto)
AC_MSG_RESULT([maybe (autodetect)])
;;
*-*-no | *-*-capsicum | *-*-pledge | *-*-landlock)
AC_MSG_RESULT([$enable_sandbox])
;;
*)
AC_MSG_RESULT([])
AC_MSG_ERROR([--enable-sandbox only accepts 'auto', 'no', 'capsicum', 'pledge', or 'landlock'.])
;;
esac
###########################
# PATH prefix for scripts #
###########################
# The scripts can add a prefix to the search PATH so that POSIX tools
# or the xz binary is always in the PATH.
AC_ARG_ENABLE([path-for-scripts],
[AS_HELP_STRING([--enable-path-for-scripts=PREFIX],
[If PREFIX isn't empty, PATH=PREFIX:$PATH will be set in
the beginning of the scripts (xzgrep and others).
The default is empty except on Solaris the default is
/usr/xpg4/bin.])],
[], [
case $host_os in
solaris*) enable_path_for_scripts=/usr/xpg4/bin ;;
*) enable_path_for_scripts= ;;
esac
])
if test -n "$enable_path_for_scripts" && test "x$enable_path_for_scripts" != xno ; then
enable_path_for_scripts="PATH=$enable_path_for_scripts:\$PATH"
else
enable_path_for_scripts=
fi
AC_SUBST([enable_path_for_scripts])
###############################################################################
# Checks for programs.
###############################################################################
echo
case $host_os in
solaris*)
# The gnulib POSIX shell macro below may pick a shell that
# doesn't work with xzgrep. Workaround by picking a shell
# that is known to work.
if test -z "$gl_cv_posix_shell" && test -x /usr/xpg4/bin/sh; then
gl_cv_posix_shell=/usr/xpg4/bin/sh
fi
;;
esac
gl_POSIX_SHELL
if test -z "$POSIX_SHELL" && test "x$enable_scripts" = xyes ; then
AC_MSG_ERROR([No POSIX conforming shell (sh) was found.])
fi
echo
echo "Initializing Automake:"
# We don't use "subdir-objects" yet because it breaks "make distclean" when
# dependencies are enabled (as of Automake 1.14.1) due to this bug:
# https://debbugs.gnu.org/cgi/bugreport.cgi?bug=17354
# The -Wno-unsupported is used to silence warnings about missing
# "subdir-objects".
AM_INIT_AUTOMAKE([1.12 foreign tar-v7 filename-length-max=99 -Wno-unsupported])
AC_PROG_LN_S
dnl # Autoconf >= 2.70 warns that AC_PROG_CC_C99 is obsolete. However,
dnl # we have to keep using AC_PROG_CC_C99 instead of AC_PROG_CC
dnl # as long as we try to be compatible with Autoconf 2.69.
AC_PROG_CC_C99
if test x$ac_cv_prog_cc_c99 = xno ; then
AC_MSG_ERROR([No C99 compiler was found.])
fi
AM_PROG_CC_C_O
AM_PROG_AS
AC_USE_SYSTEM_EXTENSIONS
AS_CASE([$enable_threads],
[posix], [
echo
echo "POSIX threading support:"
AX_PTHREAD([:]) dnl We don't need the HAVE_PTHREAD macro.
LIBS="$LIBS $PTHREAD_LIBS"
AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS"
dnl NOTE: PTHREAD_CC is ignored. It would be useful on AIX,
dnl but it's tricky to get it right together with
dnl AC_PROG_CC_C99. Thus, this is handled by telling the
dnl user in INSTALL to set the correct CC manually.
AC_DEFINE([MYTHREAD_POSIX], [1],
[Define to 1 when using POSIX threads (pthreads).])
# This is nice to have but not mandatory.
OLD_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
AC_CHECK_FUNCS([pthread_condattr_setclock])
CFLAGS=$OLD_CFLAGS
],
[win95], [
AC_DEFINE([MYTHREAD_WIN95], [1], [Define to 1 when using
Windows 95 (and thus XP) compatible threads.
This avoids use of features that were added in
Windows Vista.])
],
[vista], [
AC_DEFINE([MYTHREAD_VISTA], [1], [Define to 1 when using
Windows Vista compatible threads. This uses
features that are not available on Windows XP.])
]
)
AM_CONDITIONAL([COND_THREADS], [test "x$enable_threads" != xno])
echo
echo "Initializing Libtool:"
LT_PREREQ([2.4])
LT_INIT([win32-dll])
LT_LANG([Windows Resource])
# This is a bit wrong since it is possible to request that only some libs
# are built as shared. Using that feature isn't so common though, and this
# breaks only on Windows (at least for now) if the user enables only some
# libs as shared.
AM_CONDITIONAL([COND_SHARED], [test "x$enable_shared" != xno])
#####################
# Symbol versioning #
#####################
# NOTE: This checks if we are building shared or static library
# and if --with-pic or --without-pic was used. Thus this check
# must be after Libtool initialization.
AC_MSG_CHECKING([if library symbol versioning should be used])
AC_ARG_ENABLE([symbol-versions], [AS_HELP_STRING([--enable-symbol-versions],
[Use symbol versioning for liblzma. Enabled by default on
GNU/Linux, other GNU-based systems, and FreeBSD.])],
[], [enable_symbol_versions=auto])
if test "x$enable_symbol_versions" = xauto; then
case $host_os in
# NOTE: Even if one omits -gnu on GNU/Linux (e.g.
# i486-slackware-linux), configure will (via config.sub)
# append -gnu (e.g. i486-slackware-linux-gnu), and this
# test will work correctly.
gnu* | *-gnu* | freebsd*)
enable_symbol_versions=yes
;;
*)
enable_symbol_versions=no
;;
esac
fi
# There are two variants for symbol versioning.
# See src/liblzma/validate_map.sh for details.
#
# On GNU/Linux, extra symbols are added in the C code. These extra symbols
# must not be put into a static library as they can cause problems (and
# even if they didn't cause problems, they would be useless). On other
# systems symbol versioning may be used too but there is no problem as only
# a linker script is specified in src/liblzma/Makefile.am and that isn't
# used when creating a static library.
#
# Libtool always uses -DPIC when building shared libraries by default and
# doesn't use it for static libs by default. This can be overridden with
# --with-pic and --without-pic though. As long as neither --with-pic nor
# --without-pic is used then we can use #ifdef PIC to detect if the file is
# being built for a shared library.
if test "x$enable_symbol_versions" = xno ; then
enable_symbol_versions=no
AC_MSG_RESULT([no])
elif test "x$enable_shared" = xno ; then
enable_symbol_versions=no
AC_MSG_RESULT([no (not building a shared library)])
else
case "$host_cpu-$host_os" in
microblaze*)
# GCC 12 on MicroBlaze doesn't support __symver__
# attribute. It's simplest and safest to use the
# generic version on that platform since then only
# the linker script is needed. The RHEL/CentOS 7
# compatibility symbols don't matter on MicroBlaze.
enable_symbol_versions=generic
;;
*-linux*)
case "$pic_mode-$enable_static" in
default-*)
# Use symvers if PIC is defined.
have_symbol_versions_linux=2
;;
*-no)
# Not building static library.
# Use symvers unconditionally.
have_symbol_versions_linux=1
;;
*)
AC_MSG_RESULT([])
AC_MSG_ERROR([
On GNU/Linux, building both shared and static library at the same time
is not supported if --with-pic or --without-pic is used.
Use either --disable-shared or --disable-static to build one type
of library at a time. If both types are needed, build one at a time,
possibly picking only src/liblzma/.libs/liblzma.a from the static build.])
;;
esac
enable_symbol_versions=linux
AC_DEFINE_UNQUOTED([HAVE_SYMBOL_VERSIONS_LINUX],
[$have_symbol_versions_linux],
[Define to 1 to if GNU/Linux-specific details
are unconditionally wanted for symbol
versioning. Define to 2 to if these are wanted
only if also PIC is defined (allows building
both shared and static liblzma at the same
time with Libtool if neither --with-pic nor
--without-pic is used). This define must be
used together with liblzma_linux.map.])
;;
*)
enable_symbol_versions=generic
;;
esac
AC_MSG_RESULT([yes ($enable_symbol_versions)])
fi
AM_CONDITIONAL([COND_SYMVERS_LINUX],
[test "x$enable_symbol_versions" = xlinux])
AM_CONDITIONAL([COND_SYMVERS_GENERIC],
[test "x$enable_symbol_versions" = xgeneric])
###############################################################################
# Checks for libraries.
###############################################################################
dnl Support for _REQUIRE_VERSION was added in gettext 0.19.6. If both
dnl _REQUIRE_VERSION and _VERSION are present, the _VERSION is ignored.
dnl We use both for compatibility with other programs in the Autotools family.
echo
echo "Initializing gettext:"
AM_GNU_GETTEXT_REQUIRE_VERSION([0.19.6])
AM_GNU_GETTEXT_VERSION([0.19.6])
AM_GNU_GETTEXT([external])
###############################################################################
# Checks for header files.
###############################################################################
echo
echo "System headers and functions:"
# There is currently no workarounds in this package if some of
# these headers are missing.
AC_CHECK_HEADERS([fcntl.h limits.h sys/time.h],
[],
[AC_MSG_ERROR([Required header file(s) are missing.])])
# immintrin.h allows the use of the intrinsic functions if they are available.
# cpuid.h may be used for detecting x86 processor features at runtime.
AC_CHECK_HEADERS([immintrin.h cpuid.h])
###############################################################################
# Checks for typedefs, structures, and compiler characteristics.
###############################################################################
AC_HEADER_STDBOOL
AC_TYPE_UINT8_T
AC_TYPE_UINT16_T
AC_TYPE_INT32_T
AC_TYPE_UINT32_T
AC_TYPE_INT64_T
AC_TYPE_UINT64_T
AC_TYPE_UINTPTR_T
AC_CHECK_SIZEOF([size_t])
# The command line tool can copy high resolution timestamps if such
# information is available in struct stat. Otherwise one second accuracy
# is used.
AC_CHECK_MEMBERS([
struct stat.st_atim.tv_nsec,
struct stat.st_atimespec.tv_nsec,
struct stat.st_atimensec,
struct stat.st_uatime,
struct stat.st_atim.st__tim.tv_nsec])
AC_SYS_LARGEFILE
AC_C_BIGENDIAN
# __attribute__((__constructor__)) can be used for one-time initializations.
# Use -Werror because some compilers accept unknown attributes and just
# give a warning.
#
# FIXME? Unfortunately -Werror can cause trouble if CFLAGS contains options
# that produce warnings for unrelated reasons. For example, GCC and Clang
# support -Wunused-macros which will warn about "#define _GNU_SOURCE 1"
# which will be among the #defines that Autoconf inserts to the beginning of
# the test program. There seems to be no nice way to prevent Autoconf from
# inserting the any defines to the test program.
AC_MSG_CHECKING([if __attribute__((__constructor__)) can be used])
have_func_attribute_constructor=no
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
__attribute__((__constructor__))
static void my_constructor_func(void) { return; }
]])], [
AC_DEFINE([HAVE_FUNC_ATTRIBUTE_CONSTRUCTOR], [1],
[Define to 1 if __attribute__((__constructor__))
is supported for functions.])
have_func_attribute_constructor=yes
AC_MSG_RESULT([yes])
], [
AC_MSG_RESULT([no])
])
CFLAGS="$OLD_CFLAGS"
# The Win95 threading lacks a thread-safe one-time initialization function.
# The one-time initialization is needed for crc32_small.c and crc64_small.c
# create the CRC tables. So if small mode is enabled, the threading mode is
# win95, and the compiler does not support attribute constructor, then we
# would end up with a multithreaded build that is thread-unsafe. As a
# result this configuration is not allowed.
if test "x$enable_small$enable_threads$have_func_attribute_constructor" \
= xyeswin95no; then
AC_MSG_ERROR([
--enable-threads=win95 and --enable-small cannot be used
at the same time with a compiler that doesn't support
__attribute__((__constructor__))])
fi
# __attribute__((__ifunc__())) can be used to choose between different
# implementations of the same function at runtime. This is slightly more
# efficient than using __attribute__((__constructor__)) and setting
# a function pointer.
AC_ARG_ENABLE([ifunc], [AS_HELP_STRING([--enable-ifunc],
[Use __attribute__((__ifunc__())). Enabled by default on
GNU/Linux (glibc) and FreeBSD.])],
[], [enable_ifunc=auto])
# When enable_ifunc is 'auto', allow the use of __attribute__((__ifunc__()))
# if compiler support is detected and we are building for GNU/Linux (glibc)
# or FreeBSD. uClibc and musl don't support ifunc in their dynamic linkers
# but some compilers still accept the attribute when compiling for these
# C libraries, which results in broken binaries. That's why we need to
# check which libc is being used.
if test "x$enable_ifunc" = xauto ; then
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror"
AC_MSG_CHECKING([if __attribute__((__ifunc__())) can be used])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
/*
* Force a compilation error when not using glibc on Linux
* or if we are not using FreeBSD. uClibc will define
* __GLIBC__ but does not support ifunc, so we must have
* an extra check to disable with uClibc.
*/
#if defined(__linux__)
# include <features.h>
# if !defined(__GLIBC__) || defined(__UCLIBC__)
compile error
# endif
#elif !defined(__FreeBSD__)
compile error
#endif
static void func(void) { return; }
static void (*resolve_func (void)) (void) { return func; }
void func_ifunc (void)
__attribute__((__ifunc__("resolve_func")));
/*
* 'clang -Wall' incorrectly warns that resolve_func is
* unused (-Wunused-function). Correct assembly output is
* still produced. This problem exists at least in Clang
* versions 4 to 17. The following silences the bogus warning:
*/
void make_clang_quiet(void);
void make_clang_quiet(void) { resolve_func()(); }
]])], [
enable_ifunc=yes
], [
enable_ifunc=no
])
AC_MSG_RESULT([$enable_ifunc])
CFLAGS="$OLD_CFLAGS"
fi
if test "x$enable_ifunc" = xyes ; then
AC_DEFINE([HAVE_FUNC_ATTRIBUTE_IFUNC], [1],
[Define to 1 if __attribute__((__ifunc__()))
is supported for functions.])
# ifunc explicitly does not work with -fsanitize=address.
# If configured, it will result in a liblzma build that will fail
# when liblzma is loaded at runtime (when the ifunc resolver
# executes).
AS_CASE([$CFLAGS], [*-fsanitize=*], [AC_MSG_ERROR([
CFLAGS contains '-fsanitize=' which is incompatible with ifunc.
Use --disable-ifunc when using '-fsanitize'.])])
fi
###############################################################################
# Checks for library functions.
###############################################################################
# Gnulib replacements as needed
gl_GETOPT
# If clock_gettime() is available, liblzma with pthreads may use it, and
# xz may use it even when threading support is disabled. In XZ Utils 5.4.x
# and older, configure checked for clock_gettime() only when using pthreads.
# This way non-threaded builds of liblzma didn't get a useless dependency on
# librt which further had a dependency on libpthread. Avoiding these was
# useful when a small build was needed, for example, for initramfs use.
#
# The above reasoning is thoroughly obsolete: On GNU/Linux, librt hasn't
# been needed for clock_gettime() since glibc 2.17 (2012-12-25).
# Solaris 10 needs librt but Solaris 11 doesn't anymore.
AC_SEARCH_LIBS([clock_gettime], [rt])
AC_CHECK_FUNCS([clock_gettime])
AC_CHECK_DECL([CLOCK_MONOTONIC], [AC_DEFINE([HAVE_CLOCK_MONOTONIC], [1],
[Define to 1 if 'CLOCK_MONOTONIC' is declared in <time.h>.])], [],
[[#include <time.h>]])
# Find the best function to set timestamps.
AC_CHECK_FUNCS([futimens futimes futimesat utimes _futime utime], [break])
# This is nice to have but not mandatory.
AC_CHECK_FUNCS([posix_fadvise])
TUKLIB_PROGNAME
TUKLIB_INTEGER
TUKLIB_PHYSMEM
TUKLIB_CPUCORES
TUKLIB_MBSTR
# If requested, check for system-provided SHA-256. At least the following
# implementations are supported:
#
# OS Headers Library Type Function
# FreeBSD sys/types.h + sha256.h libmd SHA256_CTX SHA256_Init
# NetBSD sys/types.h + sha2.h SHA256_CTX SHA256_Init
# OpenBSD sys/types.h + sha2.h SHA2_CTX SHA256Init
# Solaris sys/types.h + sha2.h libmd SHA256_CTX SHA256Init
# MINIX 3 sys/types.h + sha2.h SHA256_CTX SHA256_Init
# Darwin CommonCrypto/CommonDigest.h CC_SHA256_CTX CC_SHA256_Init
#
# Note that Darwin's CC_SHA256_Update takes buffer size as uint32_t instead
# of size_t.
#
sha256_header_found=no
sha256_type_found=no
sha256_func_found=no
AS_IF([test "x$enable_external_sha256" = "xyes"], [
# Test for Common Crypto before others, because Darwin has sha256.h
# too and we don't want to use that, because on older versions it
# uses OpenSSL functions, whose SHA256_Init is not guaranteed to
# succeed.
AC_CHECK_HEADERS(
[CommonCrypto/CommonDigest.h sha256.h sha2.h],
[sha256_header_found=yes ; break])
if test "x$sha256_header_found" = xyes; then
AC_CHECK_TYPES([CC_SHA256_CTX, SHA256_CTX, SHA2_CTX],
[sha256_type_found=yes], [],
[[#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_COMMONCRYPTO_COMMONDIGEST_H
# include <CommonCrypto/CommonDigest.h>
#endif
#ifdef HAVE_SHA256_H
# include <sha256.h>
#endif
#ifdef HAVE_SHA2_H
# include <sha2.h>
#endif]])
if test "x$sha256_type_found" = xyes ; then
AC_SEARCH_LIBS([SHA256Init], [md])
AC_SEARCH_LIBS([SHA256_Init], [md])
AC_CHECK_FUNCS([CC_SHA256_Init SHA256Init SHA256_Init],
[sha256_func_found=yes ; break])
fi
fi
])
AM_CONDITIONAL([COND_INTERNAL_SHA256], [test "x$sha256_func_found" = xno])
if test "x$enable_external_sha256$sha256_func_found" = xyesno; then
AC_MSG_ERROR([--enable-external-sha256 was specified but no supported external SHA-256 implementation was found])
fi
# Check for SSE2 intrinsics. There is no run-time detection for SSE2 so if
# compiler options enable SSE2 then SSE2 support is required by the binaries.
# The compile-time check for SSE2 is done with #ifdefs because some compilers
# (ICC, MSVC) allow SSE2 intrinsics even when SSE2 isn't enabled.
AC_CHECK_DECL([_mm_movemask_epi8],
[AC_DEFINE([HAVE__MM_MOVEMASK_EPI8], [1],
[Define to 1 if _mm_movemask_epi8 is available.])],
[],
[#ifdef HAVE_IMMINTRIN_H
#include <immintrin.h>
#endif])
# For faster CRC on 32/64-bit x86 and E2K (see also crc64_fast.c):
#
# - Check for the CLMUL intrinsic _mm_clmulepi64_si128 in <immintrin.h>.
# Check also for _mm_set_epi64x for consistency with CMake build
# where it's needed to disable CLMUL with VS2013.
#
# - Check that __attribute__((__target__("ssse3,sse4.1,pclmul"))) works
# together with _mm_clmulepi64_si128 from <immintrin.h>. The attribute
# was added in GCC 4.4 but some GCC 4.x versions don't allow intrinsics
# with it. Exception: it must be not be used with EDG-based compilers
# like ICC and the compiler on E2K.
#
# If everything above is supported, runtime detection will be used to keep the
# binaries working on systems that don't support the required extensions.
AC_MSG_CHECKING([if _mm_clmulepi64_si128 is usable])
AS_IF([test "x$enable_clmul_crc" = xno], [
AC_MSG_RESULT([no, --disable-clmul-crc was used])
], [
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#include <immintrin.h>
// CLMUL works on older E2K instruction set but it is slow due to emulation.
#if defined(__e2k__) && __iset__ < 6
# error
#endif
// Intel's old compiler (ICC) can define __GNUC__ but the attribute must not
// be used with it. The new Clang-based ICX needs the attribute.
// Checking for !defined(__EDG__) catches ICC and other EDG-based compilers.
#if (defined(__GNUC__) || defined(__clang__)) && !defined(__EDG__)
__attribute__((__target__("ssse3,sse4.1,pclmul")))
#endif
__m128i my_clmul(__m128i a)
{
const __m128i b = _mm_set_epi64x(1, 2);
return _mm_clmulepi64_si128(a, b, 0);
}
]])], [
AC_DEFINE([HAVE_USABLE_CLMUL], [1],
[Define to 1 if _mm_set_epi64x and
_mm_clmulepi64_si128 are usable.
See configure.ac for details.])
enable_clmul_crc=yes
], [
enable_clmul_crc=no
])
AC_MSG_RESULT([$enable_clmul_crc])
])
# ARM64 C Language Extensions define CRC32 functions in arm_acle.h.
# These are supported by at least GCC and Clang which both need
# __attribute__((__target__("+crc"))), unless the needed compiler flags
# are used to support the CRC instruction.
AC_MSG_CHECKING([if ARM64 CRC32 instruction is usable])
AS_IF([test "x$enable_arm64_crc32" = xno], [
AC_MSG_RESULT([no, --disable-arm64-crc32 was used])
], [
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#include <arm_acle.h>
#include <stdint.h>
#if (defined(__GNUC__) || defined(__clang__)) && !defined(__EDG__)
__attribute__((__target__("+crc")))
#endif
uint32_t my_crc(uint32_t a, uint64_t b)
{
return __crc32d(a, b);
}
]])], [
AC_DEFINE([HAVE_ARM64_CRC32], [1],
[Define to 1 if ARM64 CRC32 instruction is supported.
See configure.ac for details.])
enable_arm64_crc32=yes
], [
enable_arm64_crc32=no
])
AC_MSG_RESULT([$enable_arm64_crc32])
])
# Check for ARM64 CRC32 instruction runtime detection.
# getauxval() is supported on Linux, elf_aux_info() on FreeBSD, and
# sysctlbyname("hw.optional.armv8_crc32", ...) is supported on Darwin
# (macOS, iOS, etc.). Note that sysctlbyname() is supported on FreeBSD,
# NetBSD, and possibly others too but the string is specific to Apple OSes.
# The C code is responsible for checking defined(__APPLE__) before using
# sysctlbyname("hw.optional.armv8_crc32", ...).
AS_IF([test "x$enable_arm64_crc32" = xyes], [
AC_CHECK_FUNCS([getauxval elf_aux_info sysctlbyname])
])
# Check for sandbox support. If one is found, set enable_sandbox=found.
#
# About -fsanitize: Of our three sandbox methods, only Landlock is
# incompatible with -fsanitize. FreeBSD 13.2 with Capsicum was tested with
# -fsanitize=address,undefined and had no issues. OpenBSD (as of version
# 7.4) has minimal support for process instrumentation. OpenBSD does not
# distribute the additional libraries needed (libasan, libubsan, etc.) with
# GCC or Clang needed for runtime sanitization support and instead only
# support -fsanitize-minimal-runtime for minimal undefined behavior
# sanitization. This minimal support is compatible with our use of the
# Pledge sandbox. So only Landlock will result in a build that cannot
# compress or decompress a single file to standard out.
AS_CASE([$enable_sandbox],
[auto | capsicum], [
AC_CHECK_FUNCS([cap_rights_limit], [enable_sandbox=found])
]
)
AS_CASE([$enable_sandbox],
[auto | pledge], [
AC_CHECK_FUNCS([pledge], [enable_sandbox=found])
]
)
AS_CASE([$enable_sandbox],
[auto | landlock], [
AC_CHECK_HEADERS([linux/landlock.h], [
enable_sandbox=found
AS_CASE([$CFLAGS], [*-fsanitize=*], [AC_MSG_ERROR([
CFLAGS contains '-fsanitize=' which is incompatible with the Landlock
sandboxing. Use --disable-sandbox when using '-fsanitize'.])])
])
]
)
# If a specific sandboxing method was explicitly requested and it wasn't
# found, give an error.
case $enable_sandbox in
auto | no | found)
;;
*)
AC_MSG_ERROR([$enable_sandbox support not found])
;;
esac
###############################################################################
# If using GCC, set some additional AM_CFLAGS:
###############################################################################
if test "$GCC" = yes ; then
echo
echo "GCC extensions:"
fi
# Always do the visibility check but don't set AM_CFLAGS on Windows.
# This way things get set properly even on Windows.
gl_VISIBILITY
if test -n "$CFLAG_VISIBILITY" && test "$is_w32" = no; then
AM_CFLAGS="$AM_CFLAGS $CFLAG_VISIBILITY"
fi
AS_IF([test "$GCC" = yes], [
# Enable as much warnings as possible. These commented warnings won't
# work for this package though:
# * -Wunreachable-code breaks several assert(0) cases, which are
# backed up with "return LZMA_PROG_ERROR".
# * -Wcast-qual would break various things where we need a non-const
# pointer although we don't modify anything through it.
# * -Winline, -Wdisabled-optimization, -Wunsafe-loop-optimizations
# don't seem so useful here; at least the last one gives some
# warnings which are not bugs.
# * -Wconversion still shows too many warnings.
#
# The flags before the empty line are for GCC and many of them
# are supported by Clang too. The flags after the empty line are
# for Clang.
for NEW_FLAG in \
-Wall \
-Wextra \
-Wvla \
-Wformat=2 \
-Winit-self \
-Wmissing-include-dirs \
-Wshift-overflow=2 \
-Wstrict-overflow=3 \
-Walloc-zero \
-Wduplicated-cond \
-Wfloat-equal \
-Wundef \
-Wshadow \
-Wpointer-arith \
-Wbad-function-cast \
-Wwrite-strings \
-Wdate-time \
-Wsign-conversion \
-Wfloat-conversion \
-Wlogical-op \
-Waggregate-return \
-Wstrict-prototypes \
-Wold-style-definition \
-Wmissing-prototypes \
-Wmissing-declarations \
-Wredundant-decls \
\
-Wc99-compat \
-Wc11-extensions \
-Wc2x-compat \
-Wc2x-extensions \
-Wpre-c2x-compat \
-Warray-bounds-pointer-arithmetic \
-Wassign-enum \
-Wconditional-uninitialized \
-Wdocumentation \
-Wduplicate-enum \
-Wempty-translation-unit \
-Wflexible-array-extensions \
-Wmissing-variable-declarations \
-Wnewline-eof \
-Wshift-sign-overflow \
-Wstring-conversion
do
AC_MSG_CHECKING([if $CC accepts $NEW_FLAG])
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $NEW_FLAG -Werror"
AC_COMPILE_IFELSE([AC_LANG_SOURCE(
[[void foo(void); void foo(void) { }]])], [
AM_CFLAGS="$AM_CFLAGS $NEW_FLAG"
AC_MSG_RESULT([yes])
], [
AC_MSG_RESULT([no])
])
CFLAGS="$OLD_CFLAGS"
done
AC_ARG_ENABLE([werror],
AS_HELP_STRING([--enable-werror], [Enable -Werror to abort
compilation on all compiler warnings.]),
[], [enable_werror=no])
if test "x$enable_werror" = "xyes"; then
AM_CFLAGS="$AM_CFLAGS -Werror"
fi
])
###############################################################################
# Create the makefiles and config.h
###############################################################################
echo
# Don't build the lib directory at all if we don't need any replacement
# functions.
AM_CONDITIONAL([COND_GNULIB], test -n "$LIBOBJS")
# Add default AM_CFLAGS.
AC_SUBST([AM_CFLAGS])
# This is needed for src/scripts.
xz=`echo xz | sed "$program_transform_name"`
AC_SUBST([xz])
AC_CONFIG_FILES([
Makefile
po/Makefile.in
lib/Makefile
src/Makefile
src/liblzma/Makefile
src/liblzma/api/Makefile
src/xz/Makefile
src/xzdec/Makefile
src/lzmainfo/Makefile
src/scripts/Makefile
tests/Makefile
debug/Makefile
])
AC_CONFIG_FILES([src/scripts/xzdiff], [chmod +x src/scripts/xzdiff])
AC_CONFIG_FILES([src/scripts/xzgrep], [chmod +x src/scripts/xzgrep])
AC_CONFIG_FILES([src/scripts/xzmore], [chmod +x src/scripts/xzmore])
AC_CONFIG_FILES([src/scripts/xzless], [chmod +x src/scripts/xzless])
AC_OUTPUT
# Some warnings
if test x$tuklib_cv_physmem_method = xunknown; then
echo
echo "WARNING:"
echo "No supported method to detect the amount of RAM."
echo "Consider using --enable-assume-ram (if you didn't already)"
echo "or make a patch to add support for this operating system."
fi
if test x$tuklib_cv_cpucores_method = xunknown; then
echo
echo "WARNING:"
echo "No supported method to detect the number of CPU cores."
fi
if test "x$enable_threads$enable_small$have_func_attribute_constructor" \
= xnoyesno; then
echo
echo "NOTE:"
echo "liblzma will be thread-unsafe due to the combination"
echo "of --disable-threads --enable-small when using a compiler"
echo "that doesn't support __attribute__((__constructor__))."
fi
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