aclocal.m4

lzo-1.08-src.zip 高效的压缩解压代码

# aclocal.m4 generated automatically by aclocal 1.6.2 -*- Autoconf -*-

# Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002
# Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.


# serial 4

AC_DEFUN(mfx_CUSTOMIZE,
[
mfx_PROG_CC_BUG_SIGNED_TO_UNSIGNED_CASTING
mfx_PROG_GCC_BUG_SCHEDULE_INSNS
mfx_PROG_GCC_BUG_STRENGTH_REDUCE

dnl /***********************************************************************
dnl // Prepare some macros
dnl ************************************************************************/

CFLAGS_GCC_OMIT_FRAME_POINTER=""
if test "X$GCC" = Xyes; then
  CFLAGS_GCC_OMIT_FRAME_POINTER="-fomit-frame-pointer"
  if test "X$mfx_cv_prog_checkergcc" = Xyes; then
    CFLAGS_GCC_OMIT_FRAME_POINTER="-fno-omit-frame-pointer"
  fi
  if test "X$enable_debug" = Xyes; then
    CFLAGS_GCC_OMIT_FRAME_POINTER="-fno-omit-frame-pointer"
  fi
  if test "X$enable_profiling" = Xyes; then
    CFLAGS_GCC_OMIT_FRAME_POINTER="-fno-omit-frame-pointer"
  fi
  if test "X$enable_coverage" = Xyes; then
    CFLAGS_GCC_OMIT_FRAME_POINTER="-fno-omit-frame-pointer"
  fi
fi
AC_SUBST(CFLAGS_GCC_OMIT_FRAME_POINTER)dnl

if test "X$enable_debug" = Xyes; then
  if test "X$GCC" = Xyes -a "X$USE_MAINTAINER_MODE" = Xyes; then
    test "$ac_cv_prog_cc_g" = yes && CFLAGS="$CFLAGS -g"
    test "$ac_cv_prog_cxx_g" = yes && CXXFLAGS="$CXXFLAGS -g"
  else
    test "$ac_cv_prog_cc_g" = yes && CFLAGS="$CFLAGS -g"
    test "$ac_cv_prog_cxx_g" = yes && CXXFLAGS="$CXXFLAGS -g"
  fi
fi


dnl /***********************************************************************
dnl // Compiler and architecture for use in makefiles
dnl ************************************************************************/

AC_SUBST(MFX_CC)
AC_SUBST(MFX_ARCH)
AC_SUBST(MFX_CPU)

MFX_CC="unknown"
MFX_ARCH="unknown"
MFX_CPU="$host_cpu"
if test "X$cross_compiling" = Xyes; then
  if test "X$build" = "X$host"; then
    MFX_CPU="unknown"
  fi
fi
MFX_CPU=`echo "$MFX_CPU" | sed -e 's/[^a-zA-Z0-9]//g'`

if test "X$GCC" = Xyes; then
  MFX_CC="GCC"
  if test "X$enable_debug" = Xyes; then
    CFLAGS="$CFLAGS -O0"
  else
    CFLAGS="$CFLAGS -O2"
  fi
  CFLAGS="$CFLAGS -Wall -Wcast-align -Wcast-qual -Wwrite-strings"
  case $MFX_CPU in
    i[[3456789]]86)
      MFX_ARCH="i386"
      mfx_unaligned_ok_2="yes"
      mfx_unaligned_ok_4="yes"
      CFLAGS="$CFLAGS -fno-strength-reduce"
      ;;
    *)
      if test "X$mfx_cv_prog_gcc_bug_strength_reduce" = Xyes; then
        CFLAGS="$CFLAGS -fno-strength-reduce"
      fi
      ;;
  esac
  if test "X$mfx_cv_prog_gcc_bug_schedule_insns" = Xyes; then
    CFLAGS="$CFLAGS -fno-schedule-insns -fno-schedule-insns2"
  fi
fi


if test "X$GCC" = Xyes; then
AC_CACHE_CHECK([whether ${CC-cc} accepts -fstrict-aliasing],
mfx_cv_prog_gcc_f_strict_aliasing,
[echo 'extern int x; int x = 0;' > conftest.cc
if test -z "`${CC-cc} -fstrict-aliasing -c conftest.cc 2>&1`"; then
  mfx_cv_prog_gcc_f_strict_aliasing=yes
else
  mfx_cv_prog_gcc_f_strict_aliasing=no
fi
rm -f conftest*
])
if test "X$mfx_cv_prog_gcc_f_strict_aliasing" = Xyes; then
  CFLAGS="$CFLAGS -fstrict-aliasing"
fi
fi


MFX_ARCH=`echo "$MFX_ARCH" | sed -e 's/[^a-zA-Z0-9]//g'`

AC_DEFINE_UNQUOTED(MFX_ARCH,"$MFX_ARCH")
AC_DEFINE_UNQUOTED(MFX_CPU,"$MFX_CPU")
])



# serial 1

AC_DEFUN(mfx_PROG_CC_BUG_SIGNED_TO_UNSIGNED_CASTING,
[AC_REQUIRE([AC_PROG_CC])dnl
AC_REQUIRE([AC_PROG_CPP])dnl
AC_CACHE_CHECK([whether signed to unsigned casting is broken],
mfx_cv_prog_cc_bug_signed_to_unsigned_casting,
[AC_TRY_COMPILE([], [#undef SIGNED
#if defined(__STDC__) || defined(__cplusplus)
#define SIGNED signed
#else
#define SIGNED
#endif
char x[1 - 2 * ( (int)((unsigned char)((SIGNED char) -1)) != 255 )];
],
mfx_cv_prog_cc_bug_signed_to_unsigned_casting=no,
mfx_cv_prog_cc_bug_signed_to_unsigned_casting=yes)])
])


# serial 1

AC_DEFUN(mfx_PROG_GCC_BUG_SCHEDULE_INSNS,
[AC_REQUIRE([AC_PROG_CC])dnl
AC_REQUIRE([AC_PROG_CPP])dnl
if test "$ac_cv_prog_gcc" = yes; then
mfx_save_cflags="$CFLAGS"
CFLAGS="-O2 -fschedule-insns -fschedule-insns2"
AC_CACHE_CHECK([whether ${CC-cc} suffers the -fschedule-insns bug],
mfx_cv_prog_gcc_bug_schedule_insns,
[AC_RUN_IFELSE([AC_LANG_PROGRAM([], [[
/* gcc schedule-insns optimization bug on RS6000 platforms.
 * Adapted from bug-report by Assar Westerlund <[e-mail]>
 * Compile and run it using gcc -O2 -fno-schedule-insns and
 * gcc -O2 -fschedule-insns.
 */
  const int clone[] = {1, 2, 0}; const int *q;
  q = clone; exit(*q ? 0 : 1);
]])],
[mfx_cv_prog_gcc_bug_schedule_insns=no],
[mfx_cv_prog_gcc_bug_schedule_insns=yes],
[mfx_cv_prog_gcc_bug_schedule_insns=unknown])])
CFLAGS="$mfx_save_cflags"
fi
])


# serial 1

AC_DEFUN(mfx_PROG_GCC_BUG_STRENGTH_REDUCE,
[AC_REQUIRE([AC_PROG_CC])dnl
AC_REQUIRE([AC_PROG_CPP])dnl
if test "$ac_cv_prog_gcc" = yes; then
mfx_save_cflags="$CFLAGS"
CFLAGS="-O2 -fstrength-reduce"
AC_CACHE_CHECK([whether ${CC-cc} suffers the -fstrength-reduce bug],
mfx_cv_prog_gcc_bug_strength_reduce,
[AC_TRY_RUN([
/* gcc strength-reduce optimization bug on Intel platforms.
 * Adapted from bug-report by John E. Davis <[e-mail]>
 * Compile and run it using gcc -O2 -fno-strength-reduce and
 * gcc -O2 -fstrength-reduce.
 */
int a[3]; unsigned an = 3;
int strength_reduce_bug();
int main() { unsigned j;
  for (j = 0; j < an; j++)
    a[j] = (int)j - 3;
  return strength_reduce_bug(); }
int strength_reduce_bug()
{ return a[0] != -3 || a[1] != -2 || a[2] != -1; }],
[mfx_cv_prog_gcc_bug_strength_reduce=no],
[mfx_cv_prog_gcc_bug_strength_reduce=yes],
[mfx_cv_prog_gcc_bug_strength_reduce=unknown])])
CFLAGS="$mfx_save_cflags"
fi
])

AC_DEFUN(mfx_CHECK_CROSS,
[
AC_REQUIRE([AC_PROG_CC])

if test "X$cross_compiling" = Xyes; then
  if test "X$build" = "X$host"; then
    AC_MSG_ERROR([you are cross compiling - please use the \`--host=' option])
  fi
fi

])


# serial 2

# @defmac mfx_PROG_CC_ANSI
# @maindex PROG_CC_ANSI
# @ovindex CC
# If the C compiler in not in ANSI C mode by default, try to add an option
# to output variable @code{CC} to make it so.  This macro tries various
# options that select ANSI C on some system or another.  It considers the
# compiler to be in ANSI C mode if it handles function prototypes correctly.
#
# If you use this macro, you should check after calling it whether the C
# compiler has been set to accept ANSI C; if not, the shell variable
# @code{mfx_cv_prog_cc_ansi} is set to @samp{no}.  If you wrote your source
# code in ANSI C, you can make an un-ANSIfied copy of it by using the
# program @code{ansi2knr}, which comes with Ghostscript.
# @end defmac

AC_DEFUN(mfx_PROG_CC_ANSI,
[AC_REQUIRE([AC_PROG_CC])dnl
AC_BEFORE([$0], [AC_C_INLINE])dnl
AC_BEFORE([$0], [AC_C_CONST])dnl
dnl Force this before AC_PROG_CPP.  Some cpp's, eg on HPUX, require
dnl a magic option to avoid problems with ANSI preprocessor commands
dnl like #elif.
AC_BEFORE([$0], [AC_PROG_CPP])
AC_MSG_CHECKING([for ${CC-cc} option to accept ANSI C])
AC_CACHE_VAL(mfx_cv_prog_cc_ansi,
[mfx_cv_prog_cc_ansi=no
ac_save_CC="$CC"
# Don't try gcc -ansi; that turns off useful extensions and
# breaks some systems' header files.
# AIX                   -qlanglvl=ansi
# Ultrix and OSF/1      -std1
# HP-UX 10.20 and later -Ae
# HP-UX older versions  -Aa -D_HPUX_SOURCE
# SVR4                  -Xc -D__EXTENSIONS__
for ac_arg in "" -qlanglvl=ansi -std1 -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
do
  CC="$ac_save_CC $ac_arg"
  AC_TRY_COMPILE(
[#include <sys/types.h>
#if !defined(NO_STDIO_H)
#include <sys/stat.h>
#include <stdio.h>
#endif
#include <stdarg.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
# include <limits.h>  /* note the space */
#if defined(NO_STDIO_H)
typedef struct { int dummy; } FILE;
struct stat;
#endif
#if 1 && !defined(UINT_MAX)
#  error "this is an error"
#  include "choke me"
#elif 0 || !defined(UINT_MAX)
#  error "this is an error"
#  include "choke me"
#elif !defined(UINT_MAX)
#  error "this is an error"
#  include "choke me"
#elif !(1-1)
/* ok */
#else
#  error "this is an error"
#  include "choke me"
#endif
#define STRINGIZE(x)        #x
#define MACRO_EXPAND(x)     STRINGIZE(x)
extern volatile signed char flag;
extern char *s ( void );
char *s ( void )
{
  static char n[] = MACRO_EXPAND(UINT_MAX);
  return flag ? n : n + 1;
}
/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
struct buf { int x; };
FILE * (*rcsopen) (struct buf *, struct stat *, int);
static char *e (char **p, int i)
{
  return p[i];
}
static char *f (char * (*g) (char **, int), char **p, ...)
{
  char *s;
  va_list v;
  va_start (v,p);
  s = g (p, va_arg (v,int));
  va_end (v);
  return s;
}
int test (int i, double x);
struct s1 {int (*f) (int a);};
struct s2 {int (*f) (double a);};
int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
int argc;
char **argv;
], [
return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
],
[mfx_cv_prog_cc_ansi="$ac_arg"; break])
done
CC="$ac_save_CC"
])
if test -z "$mfx_cv_prog_cc_ansi"; then
  AC_MSG_RESULT([none needed])
else
  AC_MSG_RESULT($mfx_cv_prog_cc_ansi)
fi
case "x$mfx_cv_prog_cc_ansi" in
  x|xno) ;;
  *) CC="$CC $mfx_cv_prog_cc_ansi" ;;
esac
])

# Do all the work for Automake.                            -*- Autoconf -*-

# This macro actually does too much some checks are only needed if
# your package does certain things.  But this isn't really a big deal.

# Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002
# Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.

# serial 8

# There are a few dirty hacks below to avoid letting `AC_PROG_CC' be
# written in clear, in which case automake, when reading aclocal.m4,
# will think it sees a *use*, and therefore will trigger all it's
# C support machinery.  Also note that it means that autoscan, seeing
# CC etc. in the Makefile, will ask for an AC_PROG_CC use...


AC_PREREQ([2.52])

# Autoconf 2.50 wants to disallow AM_ names.  We explicitly allow
# the ones we care about.
m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl

# AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
# AM_INIT_AUTOMAKE([OPTIONS])
# -----------------------------------------------
# The call with PACKAGE and VERSION arguments is the old style
# call (pre autoconf-2.50), which is being phased out.  PACKAGE
# and VERSION should now be passed to AC_INIT and removed from
# the call to AM_INIT_AUTOMAKE.
# We support both call styles for the transition.  After
# the next Automake release, Autoconf can make the AC_INIT
# arguments mandatory, and then we can depend on a new Autoconf
# release and drop the old call support.
AC_DEFUN([AM_INIT_AUTOMAKE],
[AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
 AC_REQUIRE([AC_PROG_INSTALL])dnl
# test to see if srcdir already configured
if test "`cd $srcdir && pwd`" != "`pwd`" &&
   test -f $srcdir/config.status; then
  AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
fi

# Define the identity of the package.
dnl Distinguish between old-style and new-style calls.
m4_ifval([$2],
[m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
 AC_SUBST([PACKAGE], [$1])dnl
 AC_SUBST([VERSION], [$2])],
[_AM_SET_OPTIONS([$1])dnl
 AC_SUBST([PACKAGE], [AC_PACKAGE_TARNAME])dnl
 AC_SUBST([VERSION], [AC_PACKAGE_VERSION])])dnl

_AM_IF_OPTION([no-define],,
[AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package])])dnl

# Some tools Automake needs.
AC_REQUIRE([AM_SANITY_CHECK])dnl
AC_REQUIRE([AC_ARG_PROGRAM])dnl
AM_MISSING_PROG(ACLOCAL, aclocal-${am__api_version})