general.m4

autoconf 2.59版,可用于redhat系统.用于编译原码,编写makefile文件.

      AC_MSG_ERROR([invalid variable name: $ac_envvar])
    ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`
    eval "$ac_envvar='$ac_optarg'"
    export $ac_envvar ;;

  *)
    # FIXME: should be removed in autoconf 3.0.
    AC_MSG_WARN([you should use --build, --host, --target])
    expr "x$ac_option" : "[.*[^-._$as_cr_alnum]]" >/dev/null &&
      AC_MSG_WARN([invalid host type: $ac_option])
    : ${build_alias=$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'`
  AC_MSG_ERROR([missing argument to $ac_option])
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 | '' ) ;;
    *)  AC_MSG_ERROR([expected an absolute directory name for --$ac_var: $ac_val]);;
  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 $ac_val in
    [[\\/$]]* | ?:[[\\/]]* ) ;;
    *)  AC_MSG_ERROR([expected an absolute directory name for --$ac_var: $ac_val]);;
  esac
done

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

# FIXME: To remove some day.
if test "x$host_alias" != x; then
  if test "x$build_alias" = x; then
    cross_compiling=maybe
    AC_MSG_WARN([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.])
  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 AS_MESSAGE_FD>/dev/null

m4_divert_pop([PARSE_ARGS])dnl
])# _AC_INIT_PARSE_ARGS


# _AC_INIT_HELP
# -------------
# Handle the `configure --help' message.
m4_define([_AC_INIT_HELP],
[m4_divert_push([HELP_BEGIN])dnl

#
# 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 <<_ACEOF
\`configure' configures m4_ifset([AC_PACKAGE_STRING],
			[AC_PACKAGE_STRING],
			[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 \`..']

_ACEOF

  cat <<_ACEOF
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]
_ACEOF

  cat <<\_ACEOF]
m4_divert_pop([HELP_BEGIN])dnl
dnl The order of the diversions here is
dnl - HELP_BEGIN
dnl   which may be extended by extra generic options such as with X or
dnl   AC_ARG_PROGRAM.  Displayed only in long --help.
dnl
dnl - HELP_CANON
dnl   Support for cross compilation (--build, --host and --target).
dnl   Display only in long --help.
dnl
dnl - HELP_ENABLE
dnl   which starts with the trailer of the HELP_BEGIN, HELP_CANON section,
dnl   then implements the header of the non generic options.
dnl
dnl - HELP_WITH
dnl
dnl - HELP_VAR
dnl
dnl - HELP_VAR_END
dnl
dnl - HELP_END
dnl   initialized below, in which we dump the trailer (handling of the
dnl   recursion for instance).
m4_divert_push([HELP_ENABLE])dnl
_ACEOF
fi

if test -n "$ac_init_help"; then
m4_ifset([AC_PACKAGE_STRING],
[  case $ac_init_help in
     short | recursive ) echo "Configuration of AC_PACKAGE_STRING:";;
   esac])
  cat <<\_ACEOF
m4_divert_pop([HELP_ENABLE])dnl
m4_divert_push([HELP_END])dnl
m4_ifset([AC_PACKAGE_BUGREPORT], [
Report bugs to <AC_PACKAGE_BUGREPORT>.])
_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 $ac_dir || continue
    _AC_SRCPATHS(["$ac_dir"])
    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
      AC_MSG_WARN([no configuration information is in $ac_dir])
    fi
    cd $ac_popdir
  done
fi

test -n "$ac_init_help" && exit 0
m4_divert_pop([HELP_END])dnl
])# _AC_INIT_HELP


# _AC_INIT_VERSION
# ----------------
# Handle the `configure --version' message.
m4_define([_AC_INIT_VERSION],
[m4_divert_text([VERSION_BEGIN],
[if $ac_init_version; then
  cat <<\_ACEOF])dnl
m4_ifset([AC_PACKAGE_STRING],
	 [m4_divert_text([VERSION_BEGIN],
			 [dnl
m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])configure[]dnl
m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION])
generated by m4_PACKAGE_STRING])])
m4_divert_text([VERSION_END],
[_ACEOF
  exit 0
fi])dnl
])# _AC_INIT_VERSION


# _AC_INIT_CONFIG_LOG
# -------------------
# Initialize the config.log file descriptor and write header to it.
m4_define([_AC_INIT_CONFIG_LOG],
[m4_divert_text([INIT_PREPARE],
[m4_define([AS_MESSAGE_LOG_FD], 5)dnl
exec AS_MESSAGE_LOG_FD>config.log
cat >&AS_MESSAGE_LOG_FD <<_ACEOF
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

It was created by m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])dnl
$as_me[]m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION]), which was
generated by m4_PACKAGE_STRING.  Invocation command line was

  $ $[0] $[@]

_ACEOF
AS_UNAME >&AS_MESSAGE_LOG_FD

cat >&AS_MESSAGE_LOG_FD <<_ACEOF


m4_text_box([Core tests.])

_ACEOF
])])# _AC_INIT_CONFIG_LOG


# _AC_INIT_PREPARE
# ----------------
# Called by AC_INIT to build the preamble of the `configure' scripts.
# 1. Trap and clean up various tmp files.
# 2. Set up the fd and output files
# 3. Remember the options given to `configure' for `config.status --recheck'.
# 4. Ensure a correct environment
# 5. Required macros (cache, default AC_SUBST etc.)
m4_define([_AC_INIT_PREPARE],
[m4_divert_push([INIT_PREPARE])dnl

# Keep a trace of the command line.
# Strip out --no-create and --no-recursion so they do not pile up.
# Strip out --silent because we don't want to record it for future runs.
# Also quote any args containing shell meta-characters.
# Make two passes to allow for proper duplicate-argument suppression.
ac_configure_args=
ac_configure_args0=
ac_configure_args1=
ac_sep=
ac_must_keep_next=false
for ac_pass in 1 2
do
  for ac_arg
  do
    case $ac_arg in
    -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
    -q | -quiet | --quiet | --quie | --qui | --qu | --q \
    | -silent | --silent | --silen | --sile | --sil)
      continue ;;
dnl If you change this globbing pattern, test it on an old shell --
dnl it's sensitive.  Putting any kind of quote in it causes syntax errors.
  [  *" "*|*"	"*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\"\']*)]
      ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
    esac
    case $ac_pass in
    1) ac_configure_args0="$ac_configure_args0 '$ac_arg'" ;;
    2)
      ac_configure_args1="$ac_configure_args1 '$ac_arg'"
dnl If trying to remove duplicates, be sure to (i) keep the *last*
dnl value (e.g. --prefix=1 --prefix=2 --prefix=1 might keep 2 only),
dnl and (ii) not to strip long options (--prefix foo --prefix bar might
dnl give --prefix foo bar).
      if test $ac_must_keep_next = true; then
	ac_must_keep_next=false # Got value, back to normal.
      else
	case $ac_arg in
dnl Use broad patterns, as arguments that would have already made configure
dnl exit don't matter.
	  *=* | --config-cache | -C | -disable-* | --disable-* \
	  | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
	  | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
	  | -with-* | --with-* | -without-* | --without-* | --x)
	    case "$ac_configure_args0 " in
	      "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
	    esac
	    ;;
	  -* ) ac_must_keep_next=true ;;
	esac
      fi
      ac_configure_args="$ac_configure_args$ac_sep'$ac_arg'"
      # Get rid of the leading space.
      ac_sep=" "
      ;;
    esac
  done
done
AS_UNSET(ac_configure_args0)
AS_UNSET(ac_configure_args1)

# 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

    AS_BOX([Cache variables.])
    echo
    m4_bpatsubsts(m4_defn([_AC_CACHE_DUMP]),
		  [^ *\(#.*\)?
],                [],
		  ['], ['"'"'])
    echo

    AS_BOX([Output variables.])
    echo
    for ac_var in $ac_subst_vars
    do
      eval ac_val=$`echo $ac_var`
      echo "$ac_var='"'"'$ac_val'"'"'"
    done | sort
    echo

    if test -n "$ac_subst_files"; then
      AS_BOX([Output files.])
      echo
      for ac_var in $ac_subst_files
      do
	eval ac_val=$`echo $ac_var`
	echo "$ac_var='"'"'$ac_val'"'"'"
      done | sort
      echo
    fi

    if test -s confdefs.h; then
      AS_BOX([confdefs.h.])
      echo
      sed "/^$/d" confdefs.h | sort
      echo
    fi
    test "$ac_signal" != 0 &&
      echo "$as_me: caught signal $ac_signal"
    echo "$as_me: exit $exit_status"
  } >&AS_MESSAGE_LOG_FD
  rm -f core *.core &&
  rm -rf conftest* confdefs* conf$[$]* $ac_clean_files &&
    exit $exit_status
     ' 0
for ac_signal in 1 2 13 15; do
  trap 'ac_signal='$ac_signal'; AS_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.
AC_DEFINE_UNQUOTED([PACKAGE_NAME], ["$PACKAGE_NAME"],
		   [Define to the full name of this package.])
AC_DEFINE_UNQUOTED([PACKAGE_TARNAME], ["$PACKAGE_TARNAME"],
		   [Define to the one symbol short name of this package.])
AC_DEFINE_UNQUOTED([PACKAGE_VERSION], ["$PACKAGE_VERSION"],
		   [Define to the version of this package.])
AC_DEFINE_UNQUOTED([PACKAGE_STRING], ["$PACKAGE_STRING"],
		   [Define to the full name and version of this package.])
AC_DEFINE_UNQUOTED([PACKAGE_BUGREPORT], ["$PACKAGE_BUGREPORT"],
		   [Define to the address where bug reports for this package
		    should be sent.])

# Let the site file select an alternate cache file if it wants to.
AC_SITE_LOAD
AC_CACHE_LOAD
_AC_ARG_VAR_VALIDATE
_AC_ARG_VAR_PRECIOUS([build_alias])dnl
_AC_ARG_VAR_PRECIOUS([host_alias])dnl
_AC_ARG_VAR_PRECIOUS([target_alias])dnl
AC_LANG_PUSH(C)

dnl Substitute for predefined variables.