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configure.ac
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Lasse Collin authored
There is no specific reason for this other than blocking the most ancient versions. These are still old: Autoconf 2.69 (2012) Automake 1.12 (2012) gettext 0.19.6 (2015) Libtool 2.4 (2010)
Lasse Collin authoredThere is no specific reason for this other than blocking the most ancient versions. These are still old: Autoconf 2.69 (2012) Automake 1.12 (2012) gettext 0.19.6 (2015) Libtool 2.4 (2010)
configure.ac 28.76 KiB
# -*- 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]),
[lasse.collin@tukaani.org], [xz], [https://tukaani.org/xz/])
AC_CONFIG_SRCDIR([src/liblzma/common/common.h])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_HEADER([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$enable_debug" = xyes; then AC_MSG_RESULT([yes])
else
AC_DEFINE([NDEBUG], [1], [Define to 1 to disable debugging code.])
AC_MSG_RESULT([no])
fi
###########
# Filters #
###########
m4_define([SUPPORTED_FILTERS], [lzma1,lzma2,delta,x86,powerpc,ia64,arm,armthumb,sparc])dnl
m4_define([SIMPLE_FILTERS], [x86,powerpc,ia64,arm,armthumb,sparc])
m4_define([LZ_FILTERS], [lzma1,lzma2])
m4_foreach([NAME], [SUPPORTED_FILTERS],
[enable_filter_[]NAME=no
enable_encoder_[]NAME=no
enable_decoder_[]NAME=no
])dnl
AC_MSG_CHECKING([which encoders to build])
AC_ARG_ENABLE([encoders], AS_HELP_STRING([--enable-encoders=LIST],
[Comma-separated list of encoders to build. Default=all.
Available encoders:]
m4_translit(m4_defn([SUPPORTED_FILTERS]), [,], [ ])),
[], [enable_encoders=SUPPORTED_FILTERS])
enable_encoders=`echo "$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
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
###########################
# 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 ;;
x86_64) enable_assembler=x86_64 ;;
esac
;;
esac
fi
case $enable_assembler in
x86 | x86_64 | no)
AC_MSG_RESULT([$enable_assembler])
;;
*)
AC_MSG_RESULT([])
AC_MSG_ERROR([--enable-assembler accepts only `yes', `no', `x86', or `x86_64'.])
;;
esac
AM_CONDITIONAL(COND_ASM_X86, test "x$enable_assembler" = xx86)
AM_CONDITIONAL(COND_ASM_X86_64, test "x$enable_assembler" = xx86_64)
#####################
# 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, $enable_threads])
;;
no)
AC_MSG_RESULT([no])
;;
*)
AC_MSG_RESULT([])
AC_MSG_ERROR([--enable-threads only accepts `yes', `no', `posix', `win95', or `vista'])
;;
esac
# The Win95 threading lacks thread-safe one-time initialization function.
# It's better to disallow it instead of allowing threaded but thread-unsafe
# build.
if test "x$enable_small$enable_threads" = xyeswin95; then
AC_MSG_ERROR([--enable-threads=win95 and --enable-small cannot be
used at the same time])
fi
# We use the actual result a little later.
#########################
# Assumed amount of RAM #
#########################
# We use 128 MiB as default, because it will allow decompressing files
# created with "xz -9". It would be slightly safer to guess a lower value,
# but most systems, on which we don't have any way to determine the amount
# of RAM, will probably have at least 128 MiB of RAM.
AC_MSG_CHECKING([how much RAM to assume if the real amount is unknown])
AC_ARG_ENABLE([assume-ram], AS_HELP_STRING([--enable-assume-ram=SIZE],
[If and only if the real amount of RAM cannot be determined,
assume SIZE MiB. The default is 128 MiB. This affects the
default memory usage limit.]),
[], [enable_assume_ram=128])
assume_ram_check=`echo "$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])
#####################
# Symbol versioning #
#####################
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 $host_os in
# NOTE: Even if one omits -gnu on GNU/Linux (e.g.
# i486-slackware-linux), configure will (via config.sub)
# append -gnu (e.g. i486-slackware-linux-gnu), and this
# test will work correctly.
gnu* | *-gnu* | freebsd*)
enable_symbol_versions=yes
;;
*)
enable_symbol_versions=no
;;
esac
fiAC_MSG_RESULT([$enable_symbol_versions])
AM_CONDITIONAL([COND_SYMVERS], [test "x$enable_symbol_versions" = xyes])
##############
# 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', or `capsicum'.
The default is `auto' which enables sandboxing if
a supported sandboxing method is found.])],
[], [enable_sandbox=auto])
case $enable_sandbox in
auto)
AC_MSG_RESULT([maybe (autodetect)])
;;
no | capsicum)
AC_MSG_RESULT([$enable_sandbox])
;;
*)
AC_MSG_RESULT([])
AC_MSG_ERROR([--enable-sandbox only accepts `auto', `no', or `capsicum'.])
;;
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_SHELLif 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:
# http://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 serial-tests -Wno-unsupported])
AC_PROG_LN_S
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
case $enable_threads in
posix)
echo
echo "POSIX threading support:"
AX_PTHREAD([:]) dnl We don't need the HAVE_PTHREAD macro.
LIBS="$LIBS $PTHREAD_LIBS"
AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS"
dnl NOTE: PTHREAD_CC is ignored. It would be useful on AIX,
dnl but it's tricky to get it right together with
dnl AC_PROG_CC_C99. Thus, this is handled by telling the
dnl user in INSTALL to set the correct CC manually.
AC_DEFINE([MYTHREAD_POSIX], [1],
[Define to 1 when using POSIX threads (pthreads).])
# These are nice to have but not mandatory.
#
# FIXME: xz uses clock_gettime if it is available and can do
# it even when threading is disabled. Moving this outside
# of pthread detection may be undesirable because then
# liblzma may get linked against librt even when librt isn't
# needed by liblzma.
OLD_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
AC_SEARCH_LIBS([clock_gettime], [rt])
AC_CHECK_FUNCS([clock_gettime pthread_condattr_setclock])
AC_CHECK_DECLS([CLOCK_MONOTONIC], [], [], [[#include <time.h>]])
CFLAGS=$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.])
;;
esac
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])
###############################################################################
# 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.])])
# This allows the use of the intrinsic functions if they are available.
AC_CHECK_HEADERS([immintrin.h])
###############################################################################
# Checks for typedefs, structures, and compiler characteristics.
###############################################################################
dnl We don't need these as long as we need a C99 compiler anyway.
dnl AC_C_INLINE
dnl AC_C_RESTRICT
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
###############################################################################
# Checks for library functions.
###############################################################################
# Gnulib replacements as needed
gl_GETOPT
# 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
if test "x$enable_external_sha256" = "xyes"; then
# Test for Common Crypto before others, because Darwin has sha256.h
# too and we don't want to use that, because on older versions it
# uses OpenSSL functions, whose SHA256_Init is not guaranteed to
# succeed.
AC_CHECK_HEADERS(
[CommonCrypto/CommonDigest.h sha256.h sha2.h],
[sha256_header_found=yes ; break])
if test "x$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$sha256_type_found" = xyes ; then
AC_SEARCH_LIBS([SHA256Init], [md])
AC_SEARCH_LIBS([SHA256_Init], [md])
AC_CHECK_FUNCS([CC_SHA256_Init SHA256Init SHA256_Init],
[sha256_func_found=yes ; break]) fi
fi
fi
AM_CONDITIONAL([COND_INTERNAL_SHA256], [test "x$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.
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])
# Check for sandbox support. If one is found, set enable_sandbox=found.
case $enable_sandbox in
auto | capsicum)
AX_CHECK_CAPSICUM([enable_sandbox=found], [:])
;;
esac
# 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 $CFLAG_VISIBILITY"
fi
if test "$GCC" = yes ; then
# 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.
# * -Wcast-align breaks optimized CRC32 and CRC64 implementation
# on some architectures (not on x86), where this warning is bogus,
# because we take care of correct alignment.
# * -Winline, -Wdisabled-optimization, -Wunsafe-loop-optimizations
# don't seem so useful here; at least the last one gives some
# warnings which are not bugs.
for NEW_FLAG in \
-Wall \
-Wextra \
-Wvla \
-Wformat=2 \
-Winit-self \ -Wmissing-include-dirs \
-Wstrict-aliasing \
-Wfloat-equal \
-Wundef \
-Wshadow \
-Wpointer-arith \
-Wbad-function-cast \
-Wwrite-strings \
-Wlogical-op \
-Waggregate-return \
-Wstrict-prototypes \
-Wold-style-definition \
-Wmissing-prototypes \
-Wmissing-declarations \
-Wmissing-noreturn \
-Wredundant-decls
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
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([
Doxyfile
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" = xnoyes; then
echo
echo "NOTE:"
echo "liblzma will be thread unsafe due the combination"
echo "of --disable-threads --enable-small."
fi