dnl CCAFE_AC_PREFIX(DEFAULT)
dnl --------------------------------------------------------------------
dnl Side effects: updates all the prefix related variables using
dnl DEFAULT if prefix has not been properly defined by now.
dnl fully expands the values, too.
dnl --------------------------------------------------------------------
AC_DEFUN(CCAFE_AC_PREFIX,
[
  if test -z "$1" ; then
    AC_MSG_ERROR([Ccafe_ac_prefix macro requires a default path.])
  fi
  if test -z "$prefix" -o "$prefix" = "NONE"; then
    prefix=$1;
  fi
  if test -z "$datadir" -o "$datadir" = "NONE/share" -o "$datadir" = '${prefix}/share' ; then
    datadir="$prefix/share";
  fi
  if test -z "$sysconfdir" -o "$sysconfdir" = "NONE/etc" -o "$sysconfdir" = '${prefix}/etc' ; then
    sysconfdir="$prefix/etc";
  fi
  if test -z "$sharedstatedir" -o "$sharedstatedir" = "NONE/com" -o "$sharedstatedir" = '${prefix}/com' ; then
    sharedstatedir="$prefix/com";
  fi
  if test -z "$localstatedir" -o "$localstatedir" = "NONE/var" -o "$localstatedir" = '${prefix}/var' ; then
    localstatedir="$prefix/var";
  fi
  if test -z "$includedir" -o "$includedir" = "NONE/include" -o "$includedir" = '${prefix}/include' ; then
    includedir="$prefix/include";
  fi
  if test -z "$infodir" -o "$infodir" = "NONE/info" -o "$infodir" = '${prefix}/info' ; then
    infodir="$prefix/info";
  fi
  if test -z "$mandir" -o "$mandir" = "NONE/man" -o "$mandir" = '${prefix}/man' ; then
    mandir="$prefix/man";
  fi
]
)

dnl --------------------------------------------------------------------
dnl requires prefix be define, or does nothing.
dnl --------------------------------------------------------------------
AC_DEFUN(CCAFE_AC_EXEC_PREFIX,
[
  if test -z "$1" ; then
    AC_MSG_ERROR([Ccafe_ac_exec_prefix macro requires a default path.])
  fi
  if test -z "$exec_prefix" -o "$exec_prefix" = "NONE"; then
     exec_prefix=$1;
  fi
  if test -z "$bindir" -o "$bindir" = "NONE/bin" -o "$bindir" = '${exec_prefix}/bin' ; then
    bindir="$exec_prefix/bin";
  fi
  if test -z "$sbindir" -o "$sbindir" = "NONE/sbin" -o "$sbindir" = '${exec_prefix}/sbin'; then
    sbindir="$exec_prefix/sbin";
  fi
  if test -z "$libexecdir" -o "$libexecdir" = "NONE/libexec" -o "$libexecdir" = '${exec_prefix}/libexec' ; then
    libexecdir="$exec_prefix/libexec";
  fi
  if test -z "$libdir" -o "$libdir" = "NONE/lib" -o "$libdir" = '${exec_prefix}/lib' ; then
    libdir="$exec_prefix/lib";
  fi
]
)