aclocal.m4 - grub4dos-solaris - Rivoreo Source Code Repositories

 dnl aclocal.m4 generated automatically by aclocal 1.4a

 dnl Copyright (C) 1994, 1995-8, 1999 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.

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

 # 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 1

 dnl Usage:
 dnl AM_INIT_AUTOMAKE(package,version, [no-define])

 AC_DEFUN(AM_INIT_AUTOMAKE,
 [AC_REQUIRE([AC_PROG_INSTALL])
 dnl We require 2.13 because we rely on SHELL being computed by configure.
 AC_PREREQ([2.13])
 PACKAGE=[$1]
 AC_SUBST(PACKAGE)
 VERSION=[$2]
 AC_SUBST(VERSION)
 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
 ifelse([$3],,
 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
 AC_REQUIRE([AM_SANITY_CHECK])
 AC_REQUIRE([AC_ARG_PROGRAM])
 dnl FIXME This is truly gross.
 missing_dir=`cd $ac_aux_dir && pwd`
 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
 dnl Set install_sh for make dist
 install_sh="$missing_dir/install-sh"
 test -f "$install_sh" || install_sh="$missing_dir/install.sh"
 AC_SUBST(install_sh)
 dnl We check for tar when the user configures the end package.
 dnl This is sad, since we only need this for "dist".  However,
 dnl there's no other good way to do it.  We prefer GNU tar if
 dnl we can find it.  If we can't find a tar, it doesn't really matter.
 AC_CHECK_PROGS(AMTAR, gnutar gtar tar)
 dnl We need awk for the "check" target.  The system "awk" is bad on
 dnl some platforms.
 AC_REQUIRE([AC_PROG_AWK])
 AMTARFLAGS=
 if test -n "$AMTAR"; then
   if $SHELL -c "$AMTAR --version" > /dev/null 2>&1; then
     dnl We have GNU tar.
     AMTARFLAGS=o
   fi
 fi
 AC_SUBST(AMTARFLAGS)
 AC_REQUIRE([AC_PROG_MAKE_SET])])

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

 AC_DEFUN(AM_SANITY_CHECK,
 [AC_MSG_CHECKING([whether build environment is sane])
 # Just in case
 sleep 1
 echo timestamp > conftestfile
 # 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
 # (eg FreeBSD returns the mod time of the symlink's containing
 # directory).
 if (
    set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
    if test "[$]*" = "X"; then
       # -L didn't work.
       set X `ls -t $srcdir/configure conftestfile`
    fi
    if test "[$]*" != "X $srcdir/configure conftestfile" \
       && test "[$]*" != "X conftestfile $srcdir/configure"; then

       # If neither matched, then we have a broken ls.  This can happen
       # if, for instance, CONFIG_SHELL is bash and it inherits a
       # broken ls alias from the environment.  This has actually
       # happened.  Such a system could not be considered "sane".
       AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
 alias in your environment])
    fi

    test "[$]2" = conftestfile
    )
 then
    # Ok.
    :
 else
    AC_MSG_ERROR([newly created file is older than distributed files!
 Check your system clock])
 fi
 rm -f conftest*
 AC_MSG_RESULT(yes)])

 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
 dnl The program must properly implement --version.
 AC_DEFUN(AM_MISSING_PROG,
 [AC_MSG_CHECKING(for working $2)
 # Run test in a subshell; some versions of sh will print an error if
 # an executable is not found, even if stderr is redirected.
 # Redirect stdin to placate older versions of autoconf.  Sigh.
 if ($2 --version) < /dev/null > /dev/null 2>&1; then
    $1=$2
    AC_MSG_RESULT(found)
 else
    $1="$3/missing $2"
    AC_MSG_RESULT(missing)
 fi
 AC_SUBST($1)])

 # Like AC_CONFIG_HEADER, but automatically create stamp file.

 AC_DEFUN(AM_CONFIG_HEADER,
 [AC_PREREQ([2.12])
 AC_CONFIG_HEADER([$1])
 dnl When config.status generates a header, we must update the stamp-h file.
 dnl This file resides in the same directory as the config header
 dnl that is generated.  We must strip everything past the first ":",
 dnl and everything past the last "/".
 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
 <<am_indx=1
 for am_file in <<$1>>; do
   case " <<$>>CONFIG_HEADERS " in
   *" <<$>>am_file "*<<)>>
     echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
     ;;
   esac
   am_indx=`expr "<<$>>am_indx" + 1`
 done<<>>dnl>>)
 changequote([,]))])

 # 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
 ]
 )

 # Define a conditional.

 AC_DEFUN(AM_CONDITIONAL,
 [AC_SUBST($1_TRUE)
 AC_SUBST($1_FALSE)
 if $2; then
   $1_TRUE=
   $1_FALSE='#'
 else
   $1_TRUE='#'
   $1_FALSE=
 fi])
	dnl aclocal.m4 generated automatically by aclocal 1.4a

	dnl Copyright (C) 1994, 1995-8, 1999 Free Software Foundation, Inc.
	dnl This file is free software; the Free Software Foundation
	dnl gives unlimited permission to copy and/or distribute it,
	dnl with or without modifications, as long as this notice is preserved.

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

	# 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 1

	dnl Usage:
	dnl AM_INIT_AUTOMAKE(package,version, [no-define])

	AC_DEFUN(AM_INIT_AUTOMAKE,
	[AC_REQUIRE([AC_PROG_INSTALL])
	dnl We require 2.13 because we rely on SHELL being computed by configure.
	AC_PREREQ([2.13])
	PACKAGE=[$1]
	AC_SUBST(PACKAGE)
	VERSION=[$2]
	AC_SUBST(VERSION)
	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
	ifelse([$3],,
	AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
	AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
	AC_REQUIRE([AM_SANITY_CHECK])
	AC_REQUIRE([AC_ARG_PROGRAM])
	dnl FIXME This is truly gross.
	missing_dir=`cd $ac_aux_dir && pwd`
	AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
	AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
	AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
	AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
	AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
	dnl Set install_sh for make dist
	install_sh="$missing_dir/install-sh"
	test -f "$install_sh" \|\| install_sh="$missing_dir/install.sh"
	AC_SUBST(install_sh)
	dnl We check for tar when the user configures the end package.
	dnl This is sad, since we only need this for "dist". However,
	dnl there's no other good way to do it. We prefer GNU tar if
	dnl we can find it. If we can't find a tar, it doesn't really matter.
	AC_CHECK_PROGS(AMTAR, gnutar gtar tar)
	dnl We need awk for the "check" target. The system "awk" is bad on
	dnl some platforms.
	AC_REQUIRE([AC_PROG_AWK])
	AMTARFLAGS=
	if test -n "$AMTAR"; then
	if $SHELL -c "$AMTAR --version" > /dev/null 2>&1; then
	dnl We have GNU tar.
	AMTARFLAGS=o
	fi
	fi
	AC_SUBST(AMTARFLAGS)
	AC_REQUIRE([AC_PROG_MAKE_SET])])

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

	AC_DEFUN(AM_SANITY_CHECK,
	[AC_MSG_CHECKING([whether build environment is sane])
	# Just in case
	sleep 1
	echo timestamp > conftestfile
	# 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
	# (eg FreeBSD returns the mod time of the symlink's containing
	# directory).
	if (
	set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
	if test "[$]*" = "X"; then
	# -L didn't work.
	set X `ls -t $srcdir/configure conftestfile`
	fi
	if test "[$]*" != "X $srcdir/configure conftestfile" \
	&& test "[$]*" != "X conftestfile $srcdir/configure"; then

	# If neither matched, then we have a broken ls. This can happen
	# if, for instance, CONFIG_SHELL is bash and it inherits a
	# broken ls alias from the environment. This has actually
	# happened. Such a system could not be considered "sane".
	AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
	alias in your environment])
	fi

	test "[$]2" = conftestfile
	)
	then
	# Ok.
	:
	else
	AC_MSG_ERROR([newly created file is older than distributed files!
	Check your system clock])
	fi
	rm -f conftest*
	AC_MSG_RESULT(yes)])

	dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
	dnl The program must properly implement --version.
	AC_DEFUN(AM_MISSING_PROG,
	[AC_MSG_CHECKING(for working $2)
	# Run test in a subshell; some versions of sh will print an error if
	# an executable is not found, even if stderr is redirected.
	# Redirect stdin to placate older versions of autoconf. Sigh.
	if ($2 --version) < /dev/null > /dev/null 2>&1; then
	$1=$2
	AC_MSG_RESULT(found)
	else
	$1="$3/missing $2"
	AC_MSG_RESULT(missing)
	fi
	AC_SUBST($1)])

	# Like AC_CONFIG_HEADER, but automatically create stamp file.

	AC_DEFUN(AM_CONFIG_HEADER,
	[AC_PREREQ([2.12])
	AC_CONFIG_HEADER([$1])
	dnl When config.status generates a header, we must update the stamp-h file.
	dnl This file resides in the same directory as the config header
	dnl that is generated. We must strip everything past the first ":",
	dnl and everything past the last "/".
	AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
	ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
	<<test -z "<<$>>CONFIG_HEADERS" \|\| echo timestamp > patsubst(<<$1>>, <<^\([^:]/\)?.>>, <<\1>>)stamp-h<<>>dnl>>,
	<<am_indx=1
	for am_file in <<$1>>; do
	case " <<$>>CONFIG_HEADERS " in
	" <<$>>am_file "<<)>>
	echo timestamp > `echo <<$>>am_file \| sed -e 's%:.%%' -e 's%[^/]$%%'`stamp-h$am_indx
	;;
	esac
	am_indx=`expr "<<$>>am_indx" + 1`
	done<<>>dnl>>)
	changequote([,]))])

	# 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
	]
	)

	# Define a conditional.

	AC_DEFUN(AM_CONDITIONAL,
	[AC_SUBST($1_TRUE)
	AC_SUBST($1_FALSE)
	if $2; then
	$1_TRUE=
	$1_FALSE='#'
	else
	$1_TRUE='#'
	$1_FALSE=
	fi])