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liblzma/configure.ac
Lasse Collin 2dcea03712 Fix compiling with IBM XL C on AIX.
2012-02-22 12:00:16 +02:00

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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([2.64])
AC_INIT([XZ Utils], m4_esyscmd([/bin/sh build-aux/version.sh]),
[lasse.collin@tukaani.org], [xz], [http://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 $host_os in
mingw* | cygwin*) is_w32=yes ;;
*) is_w32=no ;;
esac
AM_CONDITIONAL([COND_W32], [test "$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.
case $host_os in
cygwin) LN_EXEEXT= ;;
*) LN_EXEEXT='$(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], AC_HELP_STRING([--enable-debug], [Enable debugging code.]),
[], enable_debug=no)
if test "x$enable_debug" = xyes; then
AC_MSG_RESULT([yes])
else
AC_DEFINE([NDEBUG], [1], [Define to 1 to disable debugging code.])
AC_MSG_RESULT([no])
fi
###########
# Filters #
###########
m4_define([SUPPORTED_FILTERS], [lzma1,lzma2,delta,x86,powerpc,ia64,arm,armthumb,sparc])dnl
m4_define([SIMPLE_FILTERS], [x86,powerpc,ia64,arm,armthumb,sparc])
m4_define([LZ_FILTERS], [lzma1,lzma2])
m4_foreach([NAME], [SUPPORTED_FILTERS],
[enable_filter_[]NAME=no
enable_encoder_[]NAME=no
enable_decoder_[]NAME=no
])dnl
AC_MSG_CHECKING([which encoders to build])
AC_ARG_ENABLE([encoders], AC_HELP_STRING([--enable-encoders=LIST],
[Comma-separated list of encoders to build. Default=all.
Available encoders:]
m4_translit(m4_defn([SUPPORTED_FILTERS]), [,], [ ])),
[], [enable_encoders=SUPPORTED_FILTERS])
enable_encoders=`echo "$enable_encoders" | sed 's/,/ /g'`
if test "x$enable_encoders" = xno || test "x$enable_encoders" = x; then
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: $arg])
;;
esac
done
AC_MSG_RESULT([$enable_encoders])
fi
AC_MSG_CHECKING([which decoders to build])
AC_ARG_ENABLE([decoders], AC_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
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: $arg])
;;
esac
done
# LZMA2 requires that LZMA1 is enabled.
test "x$enable_encoder_lzma2" = xyes && enable_encoder_lzma1=yes
test "x$enable_decoder_lzma2" = xyes && enable_decoder_lzma1=yes
AC_MSG_RESULT([$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$enable_encoders" != xno && test "x$enable_encoders" != x)
AM_CONDITIONAL(COND_MAIN_DECODER, test "x$enable_decoders" != xno && test "x$enable_decoders" != x)
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$enable_decoder_lz" = xyes)
#################
# Match finders #
#################
m4_define([SUPPORTED_MATCH_FINDERS], [hc3,hc4,bt2,bt3,bt4])
m4_foreach([NAME], [SUPPORTED_MATCH_FINDERS],
[enable_match_finder_[]NAME=no
])
AC_MSG_CHECKING([which match finders to build])
AC_ARG_ENABLE([match-finders], AC_HELP_STRING([--enable-match-finders=LIST],
[Comma-separated list of match finders to build. Default=all.
At least one match finder is required for encoding with
the LZMA1 and LZMA2 filters. Available match finders:]
m4_translit(m4_defn([SUPPORTED_MATCH_FINDERS]), [,], [ ])), [],
[enable_match_finders=SUPPORTED_MATCH_FINDERS])
enable_match_finders=`echo "$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], AC_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$enable_checks_crc32" = xno ; then
AC_MSG_ERROR([For now, the CRC32 check must always be enabled.])
fi
m4_foreach([NAME], [SUPPORTED_CHECKS],
[AM_CONDITIONAL(COND_CHECK_[]m4_toupper(NAME), test "x$enable_check_[]NAME" = xyes)
])dnl
###########################
# Assembler optimizations #
###########################
AC_MSG_CHECKING([if assembler optimizations should be used])
AC_ARG_ENABLE([assembler], AC_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* | *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], AC_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], AC_HELP_STRING([--disable-threads],
[Disable threading support.
This makes some things thread-unsafe.]),
[], [enable_threads=yes])
if test "x$enable_threads" != xyes && test "x$enable_threads" != xno; then
AC_MSG_RESULT([])
AC_MSG_ERROR([--enable-threads accepts only \`yes' or \`no'])
fi
AC_MSG_RESULT([$enable_threads])
# We use the actual result a little later.
#########################
# Assumed amount of RAM #
#########################
# We use 128 MiB as default, because it will allow decompressing files
# created with "xz -9". It would be slightly safer to guess a lower value,
# but most systems, on which we don't have any way to determine the amount
# of RAM, will probably have at least 128 MiB of RAM.
AC_MSG_CHECKING([how much RAM to assume if the real amount is unknown])
AC_ARG_ENABLE([assume-ram], AC_HELP_STRING([--enable-assume-ram=SIZE],
[If and only if the real amount of RAM cannot be determined,
assume SIZE MiB. The default is 128 MiB. This affects the
default memory usage limit.]),
[], [enable_assume_ram=128])
assume_ram_check=`echo "$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], [AC_HELP_STRING([--disable-xz],
[do not build the xz tool])],
[], [enable_xz=yes])
AM_CONDITIONAL([COND_XZ], [test x$enable_xz != xno])
AC_ARG_ENABLE([xzdec], [AC_HELP_STRING([--disable-xzdec],
[do not build xzdec])],
[], [enable_xzdec=yes])
AM_CONDITIONAL([COND_XZDEC], [test x$enable_xzdec != xno])
AC_ARG_ENABLE([lzmadec], [AC_HELP_STRING([--disable-lzmadec],
[do not build lzmadec
(it exists primarily for LZMA Utils compatibility)])],
[], [enable_lzmadec=yes])
AM_CONDITIONAL([COND_LZMADEC], [test x$enable_lzmadec != xno])
AC_ARG_ENABLE([lzmainfo], [AC_HELP_STRING([--disable-lzmainfo],
[do not build lzmainfo
(it exists primarily for LZMA Utils compatibility)])],
[], [enable_lzmainfo=yes])
AM_CONDITIONAL([COND_LZMAINFO], [test x$enable_lzmainfo != xno])
AC_ARG_ENABLE([lzma-links], [AC_HELP_STRING([--disable-lzma-links],
[do not create symlinks for LZMA Utils compatibility])],
[], [enable_lzma_links=yes])
AM_CONDITIONAL([COND_LZMALINKS], [test x$enable_lzma_links != xno])
AC_ARG_ENABLE([scripts], [AC_HELP_STRING([--disable-scripts],
[do not install the scripts xzdiff, xzgrep, xzless, xzmore,
and their symlinks])],
[], [enable_scripts=yes])
AM_CONDITIONAL([COND_SCRIPTS], [test x$enable_scripts != xno])
#####################
# Symbol versioning #
#####################
AC_MSG_CHECKING([if library symbol versioning should be used])
AC_ARG_ENABLE([symbol-versions], [AC_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 $host_os in
gnu* | *-gnu* | freebsd*)
enable_symbol_versions=yes
;;
*)
enable_symbol_versions=no
;;
esac
fi
AC_MSG_RESULT([$enable_symbol_versions])
AM_CONDITIONAL([COND_SYMVERS], [test "x$enable_symbol_versions" = xyes])
###############################################################################
# Checks for programs.
###############################################################################
echo
gl_POSIX_SHELL
if test -z "$POSIX_SHELL" ; then
AC_MSG_ERROR([No POSIX conforming shell (sh) was found.])
fi
echo
echo "Initializing Automake:"
AM_INIT_AUTOMAKE([1.10 foreign tar-v7 filename-length-max=99])
AC_PROG_LN_S
AC_PROG_CC_C99
if test x$ac_cv_prog_cc_c99 = xno ; then
AC_MSG_ERROR([No C99 compiler was found.])
fi
AM_PROG_CC_C_O
AM_PROG_AS
AC_USE_SYSTEM_EXTENSIONS
if test "x$enable_threads" = xyes; then
echo
echo "Threading support:"
AX_PTHREAD
LIBS="$LIBS $PTHREAD_LIBS"
AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS"
dnl NOTE: PTHREAD_CC is ignored. It would be useful on AIX, but
dnl it's tricky to get it right together with AC_PROG_CC_C99.
dnl Thus, this is handled by telling the user in INSTALL to set
dnl the correct CC manually.
# These are nice to have but not mandatory.
OLD_CFLAGS=$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
fi
AM_CONDITIONAL([COND_THREADS], [test "x$ax_pthread_ok" = xyes])
echo
echo "Initializing Libtool:"
LT_PREREQ([2.2])
LT_INIT([win32-dll])
LT_LANG([Windows Resource])
# This is a bit wrong since it is possible to request that only some libs
# are built as shared. Using that feature isn't so common though, and this
# breaks only on Windows (at least for now) if the user enables only some
# libs as shared.
AM_CONDITIONAL([COND_SHARED], [test "x$enable_shared" != xno])
###############################################################################
# Checks for libraries.
###############################################################################
echo
echo "Initializing gettext:"
AM_GNU_GETTEXT_VERSION([0.16.1])
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.])])
###############################################################################
# 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 availabe 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 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
# Check for system-provided SHA-256. At least the following is 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 + minix/sha2.h libutil 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.
#
# We don't check for e.g. OpenSSL or libgcrypt because we don't want
# to introduce dependencies to other packages by default. Maybe such
# libraries could be supported via additional configure options though.
#
if test "x$enable_check_sha256" = "xyes"; then
# Test for Common Crypto before others, because Darwin has sha256.h
# too and we don't want to use that, because on older versions it
# uses OpenSSL functions, whose SHA256_Init is not guaranteed to
# succeed.
sha256_header_found=no
AC_CHECK_HEADERS(
[CommonCrypto/CommonDigest.h sha256.h sha2.h minix/sha2.h],
[sha256_header_found=yes ; break])
if test "x$sha256_header_found" = xyes; then
AC_CHECK_TYPES([CC_SHA256_CTX, SHA256_CTX, SHA2_CTX], [], [],
[[#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
#ifdef HAVE_MINIX_SHA2_H
# include <minix/sha2.h>
#endif]])
AC_SEARCH_LIBS([SHA256_Init], [md util])
AC_SEARCH_LIBS([SHA256Init], [md])
AC_CHECK_FUNCS([CC_SHA256_Init SHA256_Init SHA256Init],
[break])
fi
fi
AM_CONDITIONAL([COND_INTERNAL_SHA256],
[test "x$ac_cv_func_SHA256_Init" != xyes \
&& test "x$ac_cv_func_SHA256Init" != xyes \
&& test "x$ac_cv_func_CC_SHA256_Init" != xyes])
###############################################################################
# If using GCC, set some additional AM_CFLAGS:
###############################################################################
if test "$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 \
-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 $NEW_FLAG"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([void foo(void) { }])], [
AM_CFLAGS="$AM_CFLAGS $NEW_FLAG"
AC_MSG_RESULT([yes])
], [
AC_MSG_RESULT([no])
])
CFLAGS="$OLD_CFLAGS"
done
AC_ARG_ENABLE([werror],
AC_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/liblzma.pc
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
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