configure

GRUB 0.93的源代码。有人说可以当一个很小的操作系统了

  cat <<\_ACEOF

Optional Features:
  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
  --disable-dependency-tracking Speeds up one-time builds
  --enable-dependency-tracking  Do not reject slow dependency extractors
  --enable-maintainer-mode enable make rules and dependencies not useful
                          (and sometimes confusing) to the casual installer
  --disable-ext2fs        disable ext2fs support in Stage 2
  --disable-fat           disable FAT support in Stage 2
  --disable-ffs           disable FFS support in Stage 2
  --disable-minix         disable Minix fs support in Stage 2
  --disable-reiserfs      disable ReiserFS support in Stage 2
  --disable-vstafs        disable VSTa FS support in Stage 2
  --disable-jfs           disable IBM JFS support in Stage 2
  --disable-xfs           disable SGI XFS support in Stage 2
  --disable-gunzip        disable decompression in Stage 2
  --disable-md5-password  disable MD5 password support in Stage 2
  --disable-packet-retransmission
                          turn off packet retransmission
  --enable-pci-direct     access PCI directly instead of using BIOS
  --enable-3c509          enable 3Com509 driver
  --enable-3c529          enable 3Com529 driver
  --enable-3c595          enable 3Com595 driver
  --enable-3c90x          enable 3Com90x driver
  --enable-cs89x0         enable CS89x0 driver
  --enable-davicom        enable Davicom driver
  --enable-depca          enable DEPCA and EtherWORKS driver
  --enable-eepro          enable Etherexpress Pro/10 driver
  --enable-eepro100       enable Etherexpress Pro/100 driver
  --enable-epic100        enable SMC 83c170 EPIC/100 driver
  --enable-3c507          enable 3Com507 driver
  --enable-exos205        enable EXOS205 driver
  --enable-ni5210         enable Racal-Interlan NI5210 driver
  --enable-lance          enable Lance PCI PCNet/32 driver
  --enable-ne2100         enable Novell NE2100 driver
  --enable-ni6510         enable Racal-Interlan NI6510 driver
  --enable-natsemi        enable NatSemi DP8381x driver
  --enable-ni5010         enable Racal-Interlan NI5010 driver
  --enable-3c503          enable 3Com503 driver
  --enable-ne             enable NE1000/2000 ISA driver
  --enable-ns8390         enable NE2000 PCI driver
  --enable-wd             enable WD8003/8013, SMC8216/8416 driver
  --enable-otulip         enable old Tulip driver
  --enable-rtl8139        enable Realtek 8139 driver
  --enable-sis900         enable SIS 900 and SIS 7016 driver
  --enable-sk-g16         enable Schneider and Koch G16 driver
  --enable-smc9000        enable SMC9000 driver
  --enable-tiara          enable Tiara driver
  --enable-tulip          enable Tulip driver
  --enable-via-rhine      enable Rhine-I/II driver
  --enable-w89c840        enable Winbond W89c840, Compex RL100-ATX driver
  --enable-3c503-shmem    use 3c503 shared memory mode
  --enable-3c503-aui      use AUI by default on 3c503 cards
  --enable-compex-rl2000-fix
                          specify this if you have a Compex RL2000 PCI
  --enable-smc9000-scan=LIST
                          probe for SMC9000 I/O addresses using LIST
  --enable-ne-scan=LIST   probe for NE base address using LIST
  --enable-wd-default-mem=MEM
                          set the default memory location for WD/SMC
  --enable-cs-scan=LIST   probe for CS89x0 base address using LIST
  --enable-diskless       enable diskless support
  --disable-hercules      disable hercules terminal support
  --disable-serial        disable serial terminal support
  --enable-serial-speed-simulation
                          simulate the slowness of a serial device
  --enable-preset-menu=FILE
                          preset a menu file FILE in Stage 2
  --enable-example-kernel
                          build the example Multiboot kernel
  --disable-auto-linux-mem-opt
                          don't pass Linux mem= option automatically

Optional Packages:
  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
  --with-binutils=DIR     search the directory DIR to find binutils
  --without-curses        do not use curses

Some influential environment variables:
  CC          C compiler command
  CFLAGS      C compiler flags
  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
              nonstandard directory <lib dir>
  CPPFLAGS    C/C++ preprocessor flags, e.g. -I<include dir> if you have
              headers in a nonstandard directory <include dir>
  CPP         C preprocessor

Use these variables to override the choices made by `configure' or to help
it to find libraries and programs with nonstandard names/locations.

_ACEOF
fi

if test "$ac_init_help" = "recursive"; then
  # If there are subdirs, report their specific --help.
  ac_popdir=`pwd`
  for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
    test -d $ac_dir || continue
    ac_builddir=.

if test "$ac_dir" != .; then
  ac_dir_suffix=/`echo "$ac_dir" | sed 's,^\.[\\/],,'`
  # A "../" for each directory in $ac_dir_suffix.
  ac_top_builddir=`echo "$ac_dir_suffix" | sed 's,/[^\\/]*,../,g'`
else
  ac_dir_suffix= ac_top_builddir=
fi

case $srcdir in
  .)  # No --srcdir option.  We are building in place.
    ac_srcdir=.
    if test -z "$ac_top_builddir"; then
       ac_top_srcdir=.
    else
       ac_top_srcdir=`echo $ac_top_builddir | sed 's,/$,,'`
    fi ;;
  [\\/]* | ?:[\\/]* )  # Absolute path.
    ac_srcdir=$srcdir$ac_dir_suffix;
    ac_top_srcdir=$srcdir ;;
  *) # Relative path.
    ac_srcdir=$ac_top_builddir$srcdir$ac_dir_suffix
    ac_top_srcdir=$ac_top_builddir$srcdir ;;
esac
# Don't blindly perform a `cd "$ac_dir"/$ac_foo && pwd` since $ac_foo can be
# absolute.
ac_abs_builddir=`cd "$ac_dir" && cd $ac_builddir && pwd`
ac_abs_top_builddir=`cd "$ac_dir" && cd $ac_top_builddir && pwd`
ac_abs_srcdir=`cd "$ac_dir" && cd $ac_srcdir && pwd`
ac_abs_top_srcdir=`cd "$ac_dir" && cd $ac_top_srcdir && pwd`

    cd $ac_dir
    # Check for guested configure; otherwise get Cygnus style configure.
    if test -f $ac_srcdir/configure.gnu; then
      echo
      $SHELL $ac_srcdir/configure.gnu  --help=recursive
    elif test -f $ac_srcdir/configure; then
      echo
      $SHELL $ac_srcdir/configure  --help=recursive
    elif test -f $ac_srcdir/configure.ac ||
           test -f $ac_srcdir/configure.in; then
      echo
      $ac_configure --help
    else
      echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2
    fi
    cd $ac_popdir
  done
fi

test -n "$ac_init_help" && exit 0
if $ac_init_version; then
  cat <<\_ACEOF

Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002
Free Software Foundation, Inc.
This configure script is free software; the Free Software Foundation
gives unlimited permission to copy, distribute and modify it.
_ACEOF
  exit 0
fi
exec 5>config.log
cat >&5 <<_ACEOF
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

It was created by $as_me, which was
generated by GNU Autoconf 2.53.  Invocation command line was

  $ $0 $@

_ACEOF
{
cat <<_ASUNAME
## --------- ##
## Platform. ##
## --------- ##

hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
uname -m = `(uname -m) 2>/dev/null || echo unknown`
uname -r = `(uname -r) 2>/dev/null || echo unknown`
uname -s = `(uname -s) 2>/dev/null || echo unknown`
uname -v = `(uname -v) 2>/dev/null || echo unknown`

/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
/bin/uname -X     = `(/bin/uname -X) 2>/dev/null     || echo unknown`

/bin/arch              = `(/bin/arch) 2>/dev/null              || echo unknown`
/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null       || echo unknown`
/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
hostinfo               = `(hostinfo) 2>/dev/null               || echo unknown`
/bin/machine           = `(/bin/machine) 2>/dev/null           || echo unknown`
/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null       || echo unknown`
/bin/universe          = `(/bin/universe) 2>/dev/null          || echo unknown`

_ASUNAME

as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
for as_dir in $PATH
do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
  echo "PATH: $as_dir"
done

} >&5

cat >&5 <<_ACEOF


## ----------- ##
## Core tests. ##
## ----------- ##

_ACEOF


# Keep a trace of the command line.
# Strip out --no-create and --no-recursion so they do not pile up.
# Also quote any args containing shell meta-characters.
ac_configure_args=
ac_sep=
for ac_arg
do
  case $ac_arg in
  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
  | --no-cr | --no-c | -n ) continue ;;
  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
    continue ;;
  *" "*|*"	"*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\"\']*)
    ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
  esac
  case " $ac_configure_args " in
    *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
    *) ac_configure_args="$ac_configure_args$ac_sep'$ac_arg'"
       ac_sep=" " ;;
  esac
  # Get rid of the leading space.
done

# When interrupted or exit'd, cleanup temporary files, and complete
# config.log.  We remove comments because anyway the quotes in there
# would cause problems or look ugly.
# WARNING: Be sure not to use single quotes in there, as some shells,
# such as our DU 5.0 friend, will then `close' the trap.
trap 'exit_status=$?
  # Save into config.log some information that might help in debugging.
  {
    echo
    cat <<\_ASBOX
## ---------------- ##
## Cache variables. ##
## ---------------- ##
_ASBOX
    echo
    # The following way of writing the cache mishandles newlines in values,
{
  (set) 2>&1 |
    case `(ac_space='"'"' '"'"'; set | grep ac_space) 2>&1` in
    *ac_space=\ *)
      sed -n \
        "s/'"'"'/'"'"'\\\\'"'"''"'"'/g;
    	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='"'"'\\2'"'"'/p"
      ;;
    *)
      sed -n \
        "s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1=\\2/p"
      ;;
    esac;
}
    echo
    if test -s confdefs.h; then
      cat <<\_ASBOX
## ----------- ##
## confdefs.h. ##
## ----------- ##
_ASBOX
      echo
      sed "/^$/d" confdefs.h
      echo
    fi
    test "$ac_signal" != 0 &&
      echo "$as_me: caught signal $ac_signal"
    echo "$as_me: exit $exit_status"
  } >&5
  rm -f core core.* *.core &&
  rm -rf conftest* confdefs* conf$$* $ac_clean_files &&
    exit $exit_status
     ' 0
for ac_signal in 1 2 13 15; do
  trap 'ac_signal='$ac_signal'; { (exit 1); exit 1; }' $ac_signal
done
ac_signal=0

# confdefs.h avoids OS command line length limits that DEFS can exceed.
rm -rf conftest* confdefs.h
# AIX cpp loses on an empty file, so make sure it contains at least a newline.
echo >confdefs.h

# Predefined preprocessor variables.

cat >>confdefs.h <<_ACEOF
#define PACKAGE_NAME "$PACKAGE_NAME"
_ACEOF


cat >>confdefs.h <<_ACEOF
#define PACKAGE_TARNAME "$PACKAGE_TARNAME"
_ACEOF


cat >>confdefs.h <<_ACEOF
#define PACKAGE_VERSION "$PACKAGE_VERSION"
_ACEOF


cat >>confdefs.h <<_ACEOF
#define PACKAGE_STRING "$PACKAGE_STRING"
_ACEOF


cat >>confdefs.h <<_ACEOF
#define PACKAGE_BUGREPORT "$PACKAGE_BUGREPORT"
_ACEOF


# Let the site file select an alternate cache file if it wants to.
# Prefer explicitly selected file to automatically selected ones.
if test -z "$CONFIG_SITE"; then
  if test "x$prefix" != xNONE; then
    CONFIG_SITE="$prefix/share/config.site $prefix/etc/config.site"
  else
    CONFIG_SITE="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"
  fi
fi
for ac_site_file in $CONFIG_SITE; do
  if test -r "$ac_site_file"; then
    { echo "$as_me:$LINENO: loading site script $ac_site_file" >&5
echo "$as_me: loading site script $ac_site_file" >&6;}
    sed 's/^/| /' "$ac_site_file" >&5
    . "$ac_site_file"
  fi
done

if test -r "$cache_file"; then
  # Some versions of bash will fail to source /dev/null (special
  # files actually), so we avoid doing that.
  if test -f "$cache_file"; then
    { echo "$as_me:$LINENO: loading cache $cache_file" >&5
echo "$as_me: loading cache $cache_file" >&6;}
    case $cache_file in
      [\\/]* | ?:[\\/]* ) . $cache_file;;
      *)                      . ./$cache_file;;
    esac
  fi
else
  { echo "$as_me:$LINENO: creating cache $cache_file" >&5
echo "$as_me: creating cache $cache_file" >&6;}
  >$cache_file
fi

# Check that the precious variables saved in the cache have kept the same
# value.
ac_cache_corrupted=false
for ac_var in `(set) 2>&1 |
               sed -n 's/^ac_env_\([a-zA-Z_0-9]*\)_set=.*/\1/p'`; do
  eval ac_old_set=\$ac_cv_env_${ac_var}_set
  eval ac_new_set=\$ac_env_${ac_var}_set
  eval ac_old_val="\$ac_cv_env_${ac_var}_value"
  eval ac_new_val="\$ac_env_${ac_var}_value"
  case $ac_old_set,$ac_new_set in
    set,)
      { echo "$as_me:$LINENO: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
      ac_cache_corrupted=: ;;
    ,set)
      { echo "$as_me:$LINENO: error: \`$ac_var' was not set in the previous run" >&5
echo "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
      ac_cache_corrupted=: ;;
    ,);;
    *)
      if test "x$ac_old_val" != "x$ac_new_val"; then
        { echo "$as_me:$LINENO: error: \`$ac_var' has changed since the previous run:" >&5
echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
        { echo "$as_me:$LINENO:   former value:  $ac_old_val" >&5
echo "$as_me:   former value:  $ac_old_val" >&2;}
        { echo "$as_me:$LINENO:   current value: $ac_new_val" >&5
echo "$as_me:   current value: $ac_new_val" >&2;}
        ac_cache_corrupted=:
      fi;;
  esac
  # Pass precious variables to config.status.
  if test "$ac_new_set" = set; then
    case $ac_new_val in
    *" "*|*"	"*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\"\']*)
      ac_arg=$ac_var=`echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
    *) ac_arg=$ac_var=$ac_new_val ;;
    esac
    case " $ac_configure_args " in
      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
      *) ac_configure_args="$ac_configure_args '$ac_arg'" ;;
    esac
  fi
done
if $ac_cache_corrupted; then
  { echo "$as_me:$LINENO: error: changes in the environment can compromise the build" >&5
echo "$as_me: error: changes in the environment can compromise the build" >&2;}
  { { echo "$as_me:$LINENO: error: run \`make distclean' and/or \`rm $cache_file' and start over" >&5
echo "$as_me: error: run \`make distclean' and/or \`rm $cache_file' and start over" >&2;}
   { (exit 1); exit 1; }; }
fi