configure

由一个古老的BASIC解释器改进而成, 保留了ANSI C固有的艺术美感.

  -with-* | --with-*)
    ac_package=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
    # Reject names that are not valid shell variable names.
    expr "x$ac_package" : ".*[^-_$as_cr_alnum]" >/dev/null &&
      { echo "$as_me: error: invalid package name: $ac_package" >&2
   { (exit 1); exit 1; }; }
    ac_package=`echo $ac_package| sed 's/-/_/g'`
    case $ac_option in
      *=*) ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`;;
      *) ac_optarg=yes ;;
    esac
    eval "with_$ac_package='$ac_optarg'" ;;

  -without-* | --without-*)
    ac_package=`expr "x$ac_option" : 'x-*without-\(.*\)'`
    # Reject names that are not valid shell variable names.
    expr "x$ac_package" : ".*[^-_$as_cr_alnum]" >/dev/null &&
      { echo "$as_me: error: invalid package name: $ac_package" >&2
   { (exit 1); exit 1; }; }
    ac_package=`echo $ac_package | sed 's/-/_/g'`
    eval "with_$ac_package=no" ;;

  --x)
    # Obsolete; use --with-x.
    with_x=yes ;;

  -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
  | --x-incl | --x-inc | --x-in | --x-i)
    ac_prev=x_includes ;;
  -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
  | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*)
    x_includes=$ac_optarg ;;

  -x-libraries | --x-libraries | --x-librarie | --x-librari \
  | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l)
    ac_prev=x_libraries ;;
  -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
  | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
    x_libraries=$ac_optarg ;;

  -*) { echo "$as_me: error: unrecognized option: $ac_option
Try \`$0 --help' for more information." >&2
   { (exit 1); exit 1; }; }
    ;;

  *=*)
    ac_envvar=`expr "x$ac_option" : 'x\([^=]*\)='`
    # Reject names that are not valid shell variable names.
    expr "x$ac_envvar" : ".*[^_$as_cr_alnum]" >/dev/null &&
      { echo "$as_me: error: invalid variable name: $ac_envvar" >&2
   { (exit 1); exit 1; }; }
    ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`
    eval "$ac_envvar='$ac_optarg'"
    export $ac_envvar ;;

  *)
    # FIXME: should be removed in autoconf 3.0.
    echo "$as_me: WARNING: you should use --build, --host, --target" >&2
    expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
      echo "$as_me: WARNING: invalid host type: $ac_option" >&2
    : ${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}
    ;;

  esac
done

if test -n "$ac_prev"; then
  ac_option=--`echo $ac_prev | sed 's/_/-/g'`
  { echo "$as_me: error: missing argument to $ac_option" >&2
   { (exit 1); exit 1; }; }
fi

# Be sure to have absolute paths.
for ac_var in exec_prefix prefix
do
  eval ac_val=$`echo $ac_var`
  case $ac_val in
    [\\/$]* | ?:[\\/]* | NONE | '' ) ;;
    *)  { echo "$as_me: error: expected an absolute path for --$ac_var: $ac_val" >&2
   { (exit 1); exit 1; }; };;
  esac
done

# Be sure to have absolute paths.
for ac_var in bindir sbindir libexecdir datadir sysconfdir sharedstatedir \
              localstatedir libdir includedir oldincludedir infodir mandir
do
  eval ac_val=$`echo $ac_var`
  case $ac_val in
    [\\/$]* | ?:[\\/]* ) ;;
    *)  { echo "$as_me: error: expected an absolute path for --$ac_var: $ac_val" >&2
   { (exit 1); exit 1; }; };;
  esac
done

# There might be people who depend on the old broken behavior: `$host'
# used to hold the argument of --host etc.
build=$build_alias
host=$host_alias
target=$target_alias

# FIXME: should be removed in autoconf 3.0.
if test "x$host_alias" != x; then
  if test "x$build_alias" = x; then
    cross_compiling=maybe
    echo "$as_me: WARNING: If you wanted to set the --build type, don't use --host.
    If a cross compiler is detected then cross compile mode will be used." >&2
  elif test "x$build_alias" != "x$host_alias"; then
    cross_compiling=yes
  fi
fi

ac_tool_prefix=
test -n "$host_alias" && ac_tool_prefix=$host_alias-

test "$silent" = yes && exec 6>/dev/null

# Find the source files, if location was not specified.
if test -z "$srcdir"; then
  ac_srcdir_defaulted=yes
  # Try the directory containing this script, then its parent.
  ac_prog=$0
  ac_confdir=`echo "$ac_prog" | sed 's%[\\/][^\\/][^\\/]*$%%'`
  test "x$ac_confdir" = "x$ac_prog" && ac_confdir=.
  srcdir=$ac_confdir
  if test ! -r $srcdir/$ac_unique_file; then
    srcdir=..
  fi
else
  ac_srcdir_defaulted=no
fi
if test ! -r $srcdir/$ac_unique_file; then
  if test "$ac_srcdir_defaulted" = yes; then
    { echo "$as_me: error: cannot find sources in $ac_confdir or .." >&2
   { (exit 1); exit 1; }; }
  else
    { echo "$as_me: error: cannot find sources in $srcdir" >&2
   { (exit 1); exit 1; }; }
  fi
fi
srcdir=`echo "$srcdir" | sed 's%\([^\\/]\)[\\/]*$%\1%'`
ac_env_build_alias_set=${build_alias+set}
ac_env_build_alias_value=$build_alias
ac_cv_env_build_alias_set=${build_alias+set}
ac_cv_env_build_alias_value=$build_alias
ac_env_host_alias_set=${host_alias+set}
ac_env_host_alias_value=$host_alias
ac_cv_env_host_alias_set=${host_alias+set}
ac_cv_env_host_alias_value=$host_alias
ac_env_target_alias_set=${target_alias+set}
ac_env_target_alias_value=$target_alias
ac_cv_env_target_alias_set=${target_alias+set}
ac_cv_env_target_alias_value=$target_alias
ac_env_CXX_set=${CXX+set}
ac_env_CXX_value=$CXX
ac_cv_env_CXX_set=${CXX+set}
ac_cv_env_CXX_value=$CXX
ac_env_CXXFLAGS_set=${CXXFLAGS+set}
ac_env_CXXFLAGS_value=$CXXFLAGS
ac_cv_env_CXXFLAGS_set=${CXXFLAGS+set}
ac_cv_env_CXXFLAGS_value=$CXXFLAGS
ac_env_LDFLAGS_set=${LDFLAGS+set}
ac_env_LDFLAGS_value=$LDFLAGS
ac_cv_env_LDFLAGS_set=${LDFLAGS+set}
ac_cv_env_LDFLAGS_value=$LDFLAGS
ac_env_CPPFLAGS_set=${CPPFLAGS+set}
ac_env_CPPFLAGS_value=$CPPFLAGS
ac_cv_env_CPPFLAGS_set=${CPPFLAGS+set}
ac_cv_env_CPPFLAGS_value=$CPPFLAGS

#
# Report the --help message.
#
if test "$ac_init_help" = "long"; then
  # Omit some internal or obsolete options to make the list less imposing.
  # This message is too long to be a string in the A/UX 3.1 sh.
  cat <<EOF
\`configure' configures this package to adapt to many kinds of systems.

Usage: $0 [OPTION]... [VAR=VALUE]...

To assign environment variables (e.g., CC, CFLAGS...), specify them as
VAR=VALUE.  See below for descriptions of some of the useful variables.

Defaults for the options are specified in brackets.

Configuration:
  -h, --help              display this help and exit
      --help=short        display options specific to this package
      --help=recursive    display the short help of all the included packages
  -V, --version           display version information and exit
  -q, --quiet, --silent   do not print \`checking...' messages
      --cache-file=FILE   cache test results in FILE [disabled]
  -C, --config-cache      alias for \`--cache-file=config.cache'
  -n, --no-create         do not create output files
      --srcdir=DIR        find the sources in DIR [configure dir or \`..']

EOF

  cat <<EOF
Installation directories:
  --prefix=PREFIX         install architecture-independent files in PREFIX
                          [$ac_default_prefix]
  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
                          [PREFIX]

By default, \`make install' will install all the files in
\`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc.  You can specify
an installation prefix other than \`$ac_default_prefix' using \`--prefix',
for instance \`--prefix=\$HOME'.

For better control, use the options below.

Fine tuning of the installation directories:
  --bindir=DIR           user executables [EPREFIX/bin]
  --sbindir=DIR          system admin executables [EPREFIX/sbin]
  --libexecdir=DIR       program executables [EPREFIX/libexec]
  --datadir=DIR          read-only architecture-independent data [PREFIX/share]
  --sysconfdir=DIR       read-only single-machine data [PREFIX/etc]
  --sharedstatedir=DIR   modifiable architecture-independent data [PREFIX/com]
  --localstatedir=DIR    modifiable single-machine data [PREFIX/var]
  --libdir=DIR           object code libraries [EPREFIX/lib]
  --includedir=DIR       C header files [PREFIX/include]
  --oldincludedir=DIR    C header files for non-gcc [/usr/include]
  --infodir=DIR          info documentation [PREFIX/info]
  --mandir=DIR           man documentation [PREFIX/man]
EOF

  cat <<\EOF

Program names:
  --program-prefix=PREFIX            prepend PREFIX to installed program names
  --program-suffix=SUFFIX            append SUFFIX to installed program names
  --program-transform-name=PROGRAM   run sed PROGRAM on installed program names

System types:
  --build=BUILD     configure for building on BUILD [guessed]
  --host=HOST       build programs to run on HOST [BUILD]
  --target=TARGET   configure for building compilers for TARGET [HOST]
EOF
fi

if test -n "$ac_init_help"; then

  cat <<\EOF

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-svgalib              Use svgalib [yes]
  --disable-svgalibtest         Do not try to compile and run a test program
  --enable-installed-examples   Install the example programs [yes]

Optional Packages:
  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
  --with-svgalib-prefix=PFX  Prefix where SVGAlib is installed [/usr]

Some influential environment variables:
  CXX         C++ compiler command
  CXXFLAGS    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>

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

EOF
fi

if test "$ac_init_help" = "recursive"; then
  # If there are subdirs, report their specific --help.
  ac_popdir=`pwd`
  for ac_subdir in : $ac_subdirs_all; do test "x$ac_subdir" = x: && continue
    cd $ac_subdir
    # A "../" for each directory in /$ac_subdir.
    ac_dots=`echo $ac_subdir |
             sed 's,^\./,,;s,[^/]$,&/,;s,[^/]*/,../,g'`

    case $srcdir in
    .) # No --srcdir option.  We are building in place.
      ac_sub_srcdir=$srcdir ;;
    [\\/]* | ?:[\\/]* ) # Absolute path.
      ac_sub_srcdir=$srcdir/$ac_subdir ;;
    *) # Relative path.
      ac_sub_srcdir=$ac_dots$srcdir/$ac_subdir ;;
    esac

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

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

Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001
Free Software Foundation, Inc.
This configure script is free software; the Free Software Foundation
gives unlimited permission to copy, distribute and modify it.
EOF
  exit 0
fi
exec 5>config.log
cat >&5 <<EOF
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 2.52.  Invocation command line was

  $ $0 $@

EOF
{
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`

PATH = $PATH

_ASUNAME
} >&5

cat >&5 <<EOF
## ------------ ##
## Core tests.  ##
## ------------ ##

EOF

# 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) ;;
  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r) ;;
  *" "*|*"	"*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\"\']*)
    ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"`
    ac_configure_args="$ac_configure_args$ac_sep'$ac_arg'"
    ac_sep=" " ;;
  *) ac_configure_args="$ac_configure_args$ac_sep$ac_arg"
     ac_sep=" " ;;
  esac