aclocal.m4

# aclocal.m4 generated automatically by aclocal 1.4h

# Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000
# 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.

dnl grub_ASM_USCORE checks if C symbols get an underscore after
dnl compiling to assembler.
dnl Written by Pavel Roskin. Based on grub_ASM_EXT_C written by
dnl Erich Boleyn and modified by OKUJI Yoshinori
AC_DEFUN(grub_ASM_USCORE,
[AC_REQUIRE([AC_PROG_CC])
AC_MSG_CHECKING([if C symbols get an underscore after compilation])
AC_CACHE_VAL(grub_cv_asm_uscore,
[cat > conftest.c <<\EOF
int
func (int *list)
{
  *list = 0;
  return *list;
}
EOF

if AC_TRY_COMMAND([${CC-cc} ${CFLAGS} -S conftest.c]) && test -s conftest.s; then
  true
else
  AC_MSG_ERROR([${CC-cc} failed to produce assembly code])
fi

if grep _func conftest.s >/dev/null 2>&1; then
  grub_cv_asm_uscore=yes
else
  grub_cv_asm_uscore=no
fi

rm -f conftest*])

if test "x$grub_cv_asm_uscore" = xyes; then
  AC_DEFINE_UNQUOTED([HAVE_ASM_USCORE], $grub_cv_asm_uscore,
    [Define if C symbols get an underscore after compilation])
fi

AC_MSG_RESULT([$grub_cv_asm_uscore])
])


dnl Some versions of `objcopy -O binary' vary their output depending
dnl on the link address.
AC_DEFUN(grub_PROG_OBJCOPY_ABSOLUTE,
[AC_MSG_CHECKING([whether ${OBJCOPY} works for absolute addresses])
AC_CACHE_VAL(grub_cv_prog_objcopy_absolute,
[cat > conftest.c <<\EOF
void
cmain (void)
{
   *((int *) 0x1000) = 2;
}
EOF

if AC_TRY_EVAL(ac_compile) && test -s conftest.o; then :
else
  AC_MSG_ERROR([${CC-cc} cannot compile C source code])
fi
grub_cv_prog_objcopy_absolute=yes
for link_addr in 2000 8000 7C00; do
  if AC_TRY_COMMAND([${CC-cc} ${CFLAGS} -nostdlib -Wl,-N -Wl,-Ttext -Wl,$link_addr conftest.o -o conftest.exec]); then :
  else
    AC_MSG_ERROR([${CC-cc} cannot link at address $link_addr])
  fi
  if AC_TRY_COMMAND([${OBJCOPY-objcopy} -O binary conftest.exec conftest]); then :
  else
    AC_MSG_ERROR([${OBJCOPY-objcopy} cannot create binary files])
  fi
  if test ! -f conftest.old || AC_TRY_COMMAND([cmp -s conftest.old conftest]); then
    mv -f conftest conftest.old
  else
    grub_cv_prog_objcopy_absolute=no
    break
  fi
done
rm -f conftest*])
AC_MSG_RESULT([$grub_cv_prog_objcopy_absolute])])

dnl Mass confusion!
dnl Older versions of GAS interpret `.code16' to mean ``generate 32-bit
dnl instructions, but implicitly insert addr32 and data32 bytes so
dnl that the code works in real mode''.
dnl
dnl Newer versions of GAS interpret `.code16' to mean ``generate 16-bit
dnl instructions,'' which seems right.  This requires the programmer
dnl to explicitly insert addr32 and data32 instructions when they want
dnl them.
dnl
dnl We only support the newer versions, because the old versions cause
dnl major pain, by requiring manual assembly to get 16-bit instructions into
dnl stage1/stage1.S.
AC_DEFUN(grub_ASM_ADDR32,
[AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([grub_ASM_PREFIX_REQUIREMENT])
AC_MSG_CHECKING([for .code16 addr32 assembler support])
AC_CACHE_VAL(grub_cv_asm_addr32,
[cat > conftest.s.in <<\EOF
	.code16
l1:	@ADDR32@	movb	%al, l1
EOF

if test "x$grub_cv_asm_prefix_requirement" = xyes; then
  sed -e s/@ADDR32@/addr32/ < conftest.s.in > conftest.s
else
  sed -e s/@ADDR32@/addr32\;/ < conftest.s.in > conftest.s
fi

if AC_TRY_COMMAND([${CC-cc} ${CFLAGS} -c conftest.s]) && test -s conftest.o; then
  grub_cv_asm_addr32=yes
else
  grub_cv_asm_addr32=no
fi

rm -f conftest*])

AC_MSG_RESULT([$grub_cv_asm_addr32])])

dnl
dnl Later versions of GAS requires that addr32 and data32 prefixes
dnl appear in the same lines as the instructions they modify, while
dnl earlier versions requires that they appear in separate lines.
AC_DEFUN(grub_ASM_PREFIX_REQUIREMENT,
[AC_REQUIRE([AC_PROG_CC])
AC_MSG_CHECKING(dnl
[whether addr32 must be in the same line as the instruction])
AC_CACHE_VAL(grub_cv_asm_prefix_requirement,
[cat > conftest.s <<\EOF
	.code16
l1:	addr32	movb	%al, l1
EOF

if AC_TRY_COMMAND([${CC-cc} ${CFLAGS} -c conftest.s]) && test -s conftest.o; then
  grub_cv_asm_prefix_requirement=yes
else
  grub_cv_asm_prefix_requirement=no
fi

rm -f conftest*])

if test "x$grub_cv_asm_prefix_requirement" = xyes; then
  grub_tmp_addr32="addr32"
  grub_tmp_data32="data32"
else
  grub_tmp_addr32="addr32;"
  grub_tmp_data32="data32;"
fi

AC_DEFINE_UNQUOTED([ADDR32], $grub_tmp_addr32,
  [Define it to \"addr32\" or \"addr32;\" to make GAS happy])
AC_DEFINE_UNQUOTED([DATA32], $grub_tmp_data32,
  [Define it to \"data32\" or \"data32;\" to make GAS happy])

AC_MSG_RESULT([$grub_cv_asm_prefix_requirement])])

dnl
dnl Older versions of GAS require that absolute indirect calls/jumps are
dnl not prefixed with `*', while later versions warn if not prefixed.
AC_DEFUN(grub_ASM_ABSOLUTE_WITHOUT_ASTERISK,
[AC_REQUIRE([AC_PROG_CC])
AC_MSG_CHECKING(dnl
[whether an absolute indirect call/jump must not be prefixed with an asterisk])
AC_CACHE_VAL(grub_cv_asm_absolute_without_asterisk,
[cat > conftest.s <<\EOF
	lcall	*(offset)	
offset:
	.long	0
	.word	0
EOF

if AC_TRY_COMMAND([${CC-cc} ${CFLAGS} -c conftest.s]) && test -s conftest.o; then
  grub_cv_asm_absolute_without_asterisk=no
else
  grub_cv_asm_absolute_without_asterisk=yes
fi

rm -f conftest*])

if test "x$grub_cv_asm_absolute_without_asterisk" = xyes; then
  AC_DEFINE([ABSOLUTE_WITHOUT_ASTERISK])
fi

AC_MSG_RESULT([$grub_cv_asm_absolute_without_asterisk])])

dnl
dnl grub_CHECK_START_SYMBOL checks if start is automatically defined by
dnl the compiler.
dnl Written by OKUJI Yoshinori
AC_DEFUN(grub_CHECK_START_SYMBOL,
[AC_REQUIRE([AC_PROG_CC])
AC_MSG_CHECKING([if start is defined by the compiler])
AC_CACHE_VAL(grub_cv_check_start_symbol,
[AC_TRY_LINK([], [asm ("incl start")],
   grub_cv_check_start_symbol=yes,
   grub_cv_check_start_symbol=no)])

if test "x$grub_cv_check_start_symbol" = xyes; then
  AC_DEFINE([HAVE_START_SYMBOL])
fi

AC_MSG_RESULT([$grub_cv_check_start_symbol])
])

dnl
dnl grub_CHECK_USCORE_START_SYMBOL checks if _start is automatically
dnl defined by the compiler.
dnl Written by OKUJI Yoshinori
AC_DEFUN(grub_CHECK_USCORE_START_SYMBOL,
[AC_REQUIRE([AC_PROG_CC])
AC_MSG_CHECKING([if _start is defined by the compiler])
AC_CACHE_VAL(grub_cv_check_uscore_start_symbol,
[AC_TRY_LINK([], [asm ("incl _start")],
   grub_cv_check_uscore_start_symbol=yes,
   grub_cv_check_uscore_start_symbol=no)])

if test "x$grub_cv_check_uscore_start_symbol" = xyes; then
  AC_DEFINE([HAVE_USCORE_START_SYMBOL])
fi

AC_MSG_RESULT([$grub_cv_check_uscore_start_symbol])
])

dnl
dnl grub_CHECK_USCORE_USCORE_BSS_START_SYMBOL checks if __bss_start is
dnl automatically defined by the compiler.
dnl Written by Michael Hohmoth.
AC_DEFUN(grub_CHECK_USCORE_USCORE_BSS_START_SYMBOL,
[AC_REQUIRE([AC_PROG_CC])
AC_MSG_CHECKING([if __bss_start is defined by the compiler])
AC_CACHE_VAL(grub_cv_check_uscore_uscore_bss_start_symbol,
[AC_TRY_LINK([], [asm ("incl __bss_start")],
   grub_cv_check_uscore_uscore_bss_start_symbol=yes,
   grub_cv_check_uscore_uscore_bss_start_symbol=no)])

if test "x$grub_cv_check_uscore_uscore_bss_start_symbol" = xyes; then
  AC_DEFINE([HAVE_USCORE_USCORE_BSS_START_SYMBOL])
fi

AC_MSG_RESULT([$grub_cv_check_uscore_uscore_bss_start_symbol])
])

dnl
dnl grub_CHECK_EDATA_SYMBOL checks if edata is automatically defined by the
dnl compiler.
dnl Written by Michael Hohmuth.
AC_DEFUN(grub_CHECK_EDATA_SYMBOL,
[AC_REQUIRE([AC_PROG_CC])
AC_MSG_CHECKING([if edata is defined by the compiler])
AC_CACHE_VAL(grub_cv_check_edata_symbol,
[AC_TRY_LINK([], [asm ("incl edata")],
   grub_cv_check_edata_symbol=yes,
   grub_cv_check_edata_symbol=no)])

if test "x$grub_cv_check_edata_symbol" = xyes; then
  AC_DEFINE([HAVE_EDATA_SYMBOL])
fi

AC_MSG_RESULT([$grub_cv_check_edata_symbol])
])

dnl
dnl grub_CHECK_USCORE_EDATA_SYMBOL checks if _edata is automatically
dnl defined by the compiler.
dnl Written by Michael Hohmuth.
AC_DEFUN(grub_CHECK_USCORE_EDATA_SYMBOL,
[AC_REQUIRE([AC_PROG_CC])
AC_MSG_CHECKING([if _edata is defined by the compiler])
AC_CACHE_VAL(grub_cv_check_uscore_edata_symbol,
[AC_TRY_LINK([], [asm ("incl _edata")],
   grub_cv_check_uscore_edata_symbol=yes,
   grub_cv_check_uscore_edata_symbol=no)])

if test "x$grub_cv_check_uscore_edata_symbol" = xyes; then
  AC_DEFINE([HAVE_USCORE_EDATA_SYMBOL])
fi

AC_MSG_RESULT([$grub_cv_check_uscore_edata_symbol])
])

dnl
dnl grub_CHECK_END_SYMBOL checks if end is automatically defined by the
dnl compiler.
dnl Written by OKUJI Yoshinori
AC_DEFUN(grub_CHECK_END_SYMBOL,
[AC_REQUIRE([AC_PROG_CC])
AC_MSG_CHECKING([if end is defined by the compiler])
AC_CACHE_VAL(grub_cv_check_end_symbol,
[AC_TRY_LINK([], [asm ("incl end")],
   grub_cv_check_end_symbol=yes,
   grub_cv_check_end_symbol=no)])

if test "x$grub_cv_check_end_symbol" = xyes; then
  AC_DEFINE([HAVE_END_SYMBOL])
fi

AC_MSG_RESULT([$grub_cv_check_end_symbol])
])

dnl
dnl grub_CHECK_USCORE_END_SYMBOL checks if _end is automatically defined
dnl by the compiler.
dnl Written by OKUJI Yoshinori
AC_DEFUN(grub_CHECK_USCORE_END_SYMBOL,
[AC_REQUIRE([AC_PROG_CC])
AC_MSG_CHECKING([if _end is defined by the compiler])
AC_CACHE_VAL(grub_cv_check_uscore_end_symbol,
[AC_TRY_LINK([], [asm ("incl _end")],
   grub_cv_check_uscore_end_symbol=yes,
   grub_cv_check_uscore_end_symbol=no)])

if test "x$grub_cv_check_uscore_end_symbol" = xyes; then
  AC_DEFINE([HAVE_USCORE_END_SYMBOL])
fi

AC_MSG_RESULT([$grub_cv_check_uscore_end_symbol])
])

dnl grub_DEFINE_FILE(MACRO_NAME, FILE_NAME)
dnl grub_DEFINE_FILE defines a macro as the contents of a file safely.
dnl Replace some escape sequences, because autoconf doesn't handle them
dnl gracefully.
dnl Written by OKUJI Yoshinori.
AC_DEFUN(grub_DEFINE_FILE,
[AC_REQUIRE([AC_PROG_CC])
# Because early versions of GNU sed 3.x are too buggy, use a C program
# instead of shell commands. *sigh*
cat >conftest.c <<\EOF
#include <stdio.h>

int
main (void)
{
  int c;

  while ((c = getchar ()) != EOF)
    {
      switch (c)
        {
	case '\n':
	  fputs ("\\n", stdout);
	  break;
	case '\r':
	  fputs ("\\r", stdout);
	  break;
	case '\\':
	  fputs ("\\\\", stdout);
	  break;
	default:
	  putchar (c);
	}
    }

  return 0;
}
EOF

if AC_TRY_COMMAND([${CC-cc} ${CFLAGS} conftest.c -o conftest]) && test -s conftest; then
  grub_tmp_value=`./conftest < "[$2]"`
else
  AC_MSG_ERROR([${CC-cc} failed to produce an executable file])
fi

AC_DEFINE_UNQUOTED([$1], "$grub_tmp_value")
rm -f conftest*
])

# Do all the work for Automake.  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.

# serial 5

# 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...


# We require 2.13 because we rely on SHELL being computed by configure.
AC_PREREQ([2.13])

# AC_PROVIDE_IFELSE(MACRO-NAME, IF-PROVIDED, IF-NOT-PROVIDED)
# -----------------------------------------------------------
# If MACRO-NAME is provided do IF-PROVIDED, else IF-NOT-PROVIDED.
# The purpose of this macro is to provide the user with a means to
# check macros which are provided without letting her know how the
# information is coded.
# If this macro is not defined by Autoconf, define it here.
ifdef([AC_PROVIDE_IFELSE],
      [],
      [define([AC_PROVIDE_IFELSE],
              [ifdef([AC_PROVIDE_$1],
                     [$2], [$3])])])


# AM_INIT_AUTOMAKE(PACKAGE,VERSION, [NO-DEFINE])
# ----------------------------------------------
AC_DEFUN([AM_INIT_AUTOMAKE],
[AC_REQUIRE([AC_PROG_INSTALL])dnl
# test to see if srcdir already configured
if test "`CDPATH=:; cd $srcdir && pwd`" != "`pwd`" &&
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  AC_MSG_ERROR([source directory already configured; run \"make distclean\" there first])
fi

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AC_SUBST(PACKAGE)dnl
VERSION=$2
AC_SUBST(VERSION)dnl
ifelse([$3],,
[AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package])])

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# Some tools Automake needs.
AC_REQUIRE([AM_SANITY_CHECK])dnl
AC_REQUIRE([AC_ARG_PROGRAM])dnl
AM_MISSING_PROG(ACLOCAL, aclocal)
AM_MISSING_PROG(AUTOCONF, autoconf)
AM_MISSING_PROG(AUTOMAKE, automake)
AM_MISSING_PROG(AUTOHEADER, autoheader)
AM_MISSING_PROG(MAKEINFO, makeinfo)
AM_MISSING_PROG(AMTAR, tar)
AM_MISSING_INSTALL_SH
AM_PROG_INSTALL_STRIP
# We need awk for the "check" target.  The system "awk" is bad on
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AC_REQUIRE([AC_PROG_AWK])dnl
AC_REQUIRE([AC_PROG_MAKE_SET])dnl
AC_REQUIRE([AM_DEP_TRACK])dnl
AC_REQUIRE([AM_SET_DEPDIR])dnl
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AC_PROVIDE_IFELSE([AC_PROG_][CXX],
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])

#
# Check to make sure that the build environment is sane.
#

# serial 3

# AM_SANITY_CHECK
# ---------------
AC_DEFUN([AM_SANITY_CHECK],
[AC_MSG_CHECKING([whether build environment is sane])
# Just in case
sleep 1
echo timestamp > conftest.file
# Do `set' in a subshell so we don't clobber the current shell's
# arguments.  Must try -L first in case configure is actually a
# symlink; some systems play weird games with the mod time of symlinks
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alias in your environment])
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   test "$[2]" = conftest.file
   )
then
   # Ok.
   :
else
   AC_MSG_ERROR([newly created file is older than distributed files!
Check your system clock])
fi
AC_MSG_RESULT(yes)])


# serial 2

# AM_MISSING_PROG(NAME, PROGRAM)
# ------------------------------
AC_DEFUN([AM_MISSING_PROG],
[AC_REQUIRE([AM_MISSING_HAS_RUN])
$1=${$1-"${am_missing_run}$2"}
AC_SUBST($1)])


# AM_MISSING_INSTALL_SH
# ---------------------
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AC_DEFUN([AM_MISSING_INSTALL_SH],
[AC_REQUIRE([AM_MISSING_HAS_RUN])
if test -z "$install_sh"; then
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fi
AC_SUBST(install_sh)])


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# is pretty anoying since it makes $ac_aux_dir quite unusable in
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#
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AC_DEFUN([AM_AUX_DIR_EXPAND], [
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am_aux_dir=`CDPATH=:; cd $ac_aux_dir && pwd`
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# One issue with vendor `install' (even GNU) is that you can't
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AC_DEFUN([AM_PROG_INSTALL_STRIP],
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_am_dirpart="`echo $install_sh | sed -e 's,//*[[^/]]*$,,'`"
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AC_SUBST([INSTALL_STRIP_PROGRAM])])

# serial 3

# 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...

# AM_DEPENDENCIES(NAME)
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AC_REQUIRE([AC_PROG_][CPP])
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AC_REQUIRE([AC_PROG_][CXXCPP])
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AC_REQUIRE([AM_MAKE_INCLUDE])
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	break
      fi
      ;;
    none) break ;;
    esac
    # We check with `-c' and `-o' for the sake of the "dashmstdout"
    # mode.  It turns out that the SunPro C++ compiler does not properly
    # handle `-M -o', and we need to detect this.
    if depmode="$depmode" \
       source=conftest.c object=conftest.o \
       depfile=conftest.Po tmpdepfile=conftest.TPo \
       $SHELL ./depcomp $depcc -c conftest.c -o conftest.o >/dev/null 2>&1 &&
       grep conftest.h conftest.Po > /dev/null 2>&1; then
      am_cv_$1_dependencies_compiler_type="$depmode"
      break
    fi
  done

  cd ..
  rm -rf confdir
else
  am_cv_$1_dependencies_compiler_type=none
fi
])
$1DEPMODE="depmode=$am_cv_$1_dependencies_compiler_type"
AC_SUBST([$1DEPMODE])
])


# AM_SET_DEPDIR
# -------------
# Choose a directory name for dependency files.
# This macro is AC_REQUIREd in AM_DEPENDENCIES
AC_DEFUN([AM_SET_DEPDIR],
[if test -d .deps || mkdir .deps 2> /dev/null || test -d .deps; then
  DEPDIR=.deps
  # We redirect because .deps might already exist and be populated.
  # In this situation we don't want to see an error.
  rmdir .deps > /dev/null 2>&1
else
  DEPDIR=_deps
fi
AC_SUBST(DEPDIR)
])


# AM_DEP_TRACK
# ------------
AC_DEFUN([AM_DEP_TRACK],
[AC_ARG_ENABLE(dependency-tracking,
[  --disable-dependency-tracking Speeds up one-time builds
  --enable-dependency-tracking  Do not reject slow dependency extractors])
if test "x$enable_dependency_tracking" != xno; then
  am_depcomp="$ac_aux_dir/depcomp"
  AMDEPBACKSLASH='\'
fi
AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
pushdef([subst], defn([AC_SUBST]))
subst(AMDEPBACKSLASH)
popdef([subst])
])

# Generate code to set up dependency tracking.
# This macro should only be invoked once -- use via AC_REQUIRE.
# Usage:
# AM_OUTPUT_DEPENDENCY_COMMANDS

#
# This code is only required when automatic dependency tracking
# is enabled.  FIXME.  This creates each `.P' file that we will
# need in order to bootstrap the dependency handling code.
AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],[
AC_OUTPUT_COMMANDS([
test x"$AMDEP_TRUE" != x"" ||
for mf in $CONFIG_FILES; do
  case "$mf" in
  Makefile) dirpart=.;;
  */Makefile) dirpart=`echo "$mf" | sed -e 's|/[^/]*$||'`;;
  *) continue;;
  esac
  grep '^DEP_FILES *= *[^ #]' < "$mf" > /dev/null || continue
  # Extract the definition of DEP_FILES from the Makefile without
  # running `make'.
  DEPDIR=`sed -n -e '/^DEPDIR = / s///p' < "$mf"`
  test -z "$DEPDIR" && continue
  # When using ansi2knr, U may be empty or an underscore; expand it
  U=`sed -n -e '/^U = / s///p' < "$mf"`
  test -d "$dirpart/$DEPDIR" || mkdir "$dirpart/$DEPDIR"
  # We invoke sed twice because it is the simplest approach to
  # changing $(DEPDIR) to its actual value in the expansion.
  for file in `sed -n -e '
    /^DEP_FILES = .*\\\\$/ {
      s/^DEP_FILES = //
      :loop
	s/\\\\$//
	p
	n
	/\\\\$/ b loop
      p
    }
    /^DEP_FILES = / s/^DEP_FILES = //p' < "$mf" | \
       sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do
    # Make sure the directory exists.
    test -f "$dirpart/$file" && continue
    fdir=`echo "$file" | sed -e 's|/[^/]*$||'`
    $ac_aux_dir/mkinstalldirs "$dirpart/$fdir" > /dev/null 2>&1
    # echo "creating $dirpart/$file"
    echo '# dummy' > "$dirpart/$file"
  done
done
], [AMDEP_TRUE="$AMDEP_TRUE"
ac_aux_dir="$ac_aux_dir"])])

# AM_MAKE_INCLUDE()
# -----------------
# Check to see how make treats includes.
AC_DEFUN([AM_MAKE_INCLUDE],
[am_make=${MAKE-make}
cat > confinc << 'END'
doit:
	@echo done
END
# If we don't find an include directive, just comment out the code.
AC_MSG_CHECKING([for style of include used by $am_make])
_am_include='#'
_am_quote=
_am_result=none
# First try GNU make style include.
echo "include confinc" > confmf
# We grep out `Entering directory' and `Leaving directory'
# messages which can occur if `w' ends up in MAKEFLAGS.
# In particular we don't look at `^make:' because GNU make might
# be invoked under some other name (usually "gmake"), in which
# case it prints its new name instead of `make'.
if test "`$am_make -s -f confmf 2> /dev/null | fgrep -v 'ing directory'`" = "done"; then
   _am_include=include
   _am_quote=
   _am_result=GNU
fi
# Now try BSD make style include.
if test "$_am_include" = "#"; then
   echo '.include "confinc"' > confmf
   if test "`$am_make -s -f confmf 2> /dev/null`" = "done"; then
      _am_include=.include
      _am_quote='"'
      _am_result=BSD
   fi
fi
AC_SUBST(_am_include)
AC_SUBST(_am_quote)
AC_MSG_RESULT($_am_result)
rm -f confinc confmf
])

# serial 3

# AM_CONDITIONAL(NAME, SHELL-CONDITION)
# -------------------------------------
# Define a conditional.
#
# FIXME: Once using 2.50, use this:
# m4_match([$1], [^TRUE\|FALSE$], [AC_FATAL([$0: invalid condition: $1])])dnl
AC_DEFUN([AM_CONDITIONAL],
[ifelse([$1], [TRUE],
        [errprint(__file__:__line__: [$0: invalid condition: $1
])dnl
m4exit(1)])dnl
ifelse([$1], [FALSE],
       [errprint(__file__:__line__: [$0: invalid condition: $1
])dnl
m4exit(1)])dnl
AC_SUBST([$1_TRUE])
AC_SUBST([$1_FALSE])
if $2; then
  $1_TRUE=
  $1_FALSE='#'
else
  $1_TRUE='#'
  $1_FALSE=
fi])

# Like AC_CONFIG_HEADER, but automatically create stamp file.

# serial 3

# When config.status generates a header, we must update the stamp-h file.
# This file resides in the same directory as the config header
# that is generated.  We must strip everything past the first ":",
# and everything past the last "/".

AC_PREREQ([2.12])

AC_DEFUN([AM_CONFIG_HEADER],
[AC_CONFIG_HEADER([$1])
  AC_OUTPUT_COMMANDS(
   ifelse(patsubst([$1], [[^ ]], []),
	  [],
	  [test -z "$CONFIG_HEADERS" || echo timestamp >dnl
	   patsubst([$1], [^\([^:]*/\)?.*], [\1])stamp-h]),
  [am_indx=1
  for am_file in $1; do
    case " $CONFIG_HEADERS " in
    *" $am_file "*)
      echo timestamp > `echo $am_file | sed 's%:.*%%;s%[^/]*$%%'`stamp-h$am_indx
      ;;
    esac
    am_indx=\`expr \$am_indx + 1\`
  done])
])

# Add --enable-maintainer-mode option to configure.
# From Jim Meyering

# serial 1

AC_DEFUN([AM_MAINTAINER_MODE],
[AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
  dnl maintainer-mode is disabled by default
  AC_ARG_ENABLE(maintainer-mode,
[  --enable-maintainer-mode enable make rules and dependencies not useful
                          (and sometimes confusing) to the casual installer],
      USE_MAINTAINER_MODE=$enableval,
      USE_MAINTAINER_MODE=no)
  AC_MSG_RESULT([$USE_MAINTAINER_MODE])
  AM_CONDITIONAL(MAINTAINER_MODE, [test $USE_MAINTAINER_MODE = yes])
  MAINT=$MAINTAINER_MODE_TRUE
  AC_SUBST(MAINT)dnl
]
)