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#serial 99

AC_DEFUN(AC_ENABLE_MULTILIB,

[

AC_ARG_ENABLE(multilib,

AC_HELP_STRING([--enable-multilib],

[build many library versions (default=no)]),

[case "${enableval}" in

  yes) multilib=yes ;;

  no)  multilib=no ;;

  *)   AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;

 esac], [multilib=no])dnl

AM_CONDITIONAL(MULTILIB,test x"${multilib}" = x"yes")

dnl We may get other options which we don't document:

dnl --with-target-subdir, --with-multisrctop, --with-multisubdir

if test "[$]{srcdir}" = "."; then

  if test "[$]{with_target_subdir}" != "."; then

    multilib_basedir="[$]{srcdir}/[$]{with_multisrctop}../ifelse([$2],,,[$2])"

  else

    multilib_basedir="[$]{srcdir}/[$]{with_multisrctop}ifelse([$2],,,[$2])"

  fi

else

  multilib_basedir="[$]{srcdir}/ifelse([$2],,,[$2])"

fi

AC_SUBST(multilib_basedir)

if test "${multilib}" = "yes"; then

  multilib_arg="--enable-multilib"

else

  multilib_arg=

fi

AC_OUTPUT_COMMANDS(

[case " $CONFIG_FILES " in

 *" ]m4_if([$1],,Makefile,[$1])[ "*)

    ac_file=]m4_if([$1],,Makefile,[$1])[ . ${multilib_basedir}/config-ml.in

esac],

[

  srcdir=${srcdir}

  host=${host}

  target=${target}

  with_multisrctop="${with_multisrctop}"

  with_target_subdir="${with_target_subdir}"

  with_multisubdir="${with_multisubdir}"

  ac_configure_args="${multilib_arg} ${ac_configure_args}"

  CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}

  multilib_basedir=${multilib_basedir}

  CC="${CC}"]

)

])