dnl AC_ENABLE_SHARED - implement the --enable-shared flag
dnl Usage: AC_ENABLE_SHARED[(DEFAULT)]
dnl   Where DEFAULT is either `yes' or `no'.  If omitted, it defaults to
dnl   `yes'.
AC_DEFUN([AC_ENABLE_SHARED],
[define([AC_ENABLE_SHARED_DEFAULT], ifelse($1, no, no, yes))dnl
AC_ARG_ENABLE(shared,
changequote(<<, >>)dnl
<<  --enable-shared[=PKGS]    build shared libraries [default=>>AC_ENABLE_SHARED_DEFAULT],
changequote([, ])dnl
[p=${PACKAGE-default}
case $enableval in
yes) enable_shared=yes ;;
no) enable_shared=no ;;
*)
  enable_shared=no
  # Look at the argument we got.  We use all the common list separators.
  IFS="${IFS=   }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
  for pkg in $enableval; do
    if test "X$pkg" = "X$p"; then
      enable_shared=yes
    fi

  done
  IFS="$ac_save_ifs"
  ;;
esac],
enable_shared=AC_ENABLE_SHARED_DEFAULT)dnl
])