test -n"$TR"|| TR="NOT_FOUND"

TRSTRINGS=`echo ABCdef|$TR'[a-z]''[A-Z]'2>/dev/null| grep ABCDEF`

TRCLASS=`echo ABCdef|$TR'[:lower:]''[:upper:]'2>/dev/null| grep ABCDEF`

TRSTRINGS="`echo ABCdef|$TR'[a-z]''[A-Z]'2>/dev/null| grep ABCDEF`"

TRCLASS="`echo ABCdef|$TR'[:lower:]''[:upper:]'2>/dev/null| grep ABCDEF`"

iftest"$TRSTRINGS" ="ABCDEF";then

TRARGS="'[a-z]' '[A-Z]'"

eliftest"$TRCLASS" ="ABCDEF";then

TRARGS="\"[:lower:]\"\"[:upper:]\""

TRARGS="'[:lower:]' '[:upper:]'"

{echo"configure: error:"Can\'t find method to covert from upper to lowercase with tr""1>&2;exit 1; }

AC_PATH_PROGS(TR, trbsd tr, NOT_FOUND)

dnl Check tr flags to convert from lower to upper case

TRSTRINGS=`echo ABCdef | $TR '[[a-z]]' '[[A-Z]]' 2>/dev/null | grep ABCDEF`

TRCLASS=`echo ABCdef | $TR '[[:lower:]]' '[[:upper:]]' 2>/dev/null | grep ABCDEF`

TRSTRINGS="`echo ABCdef | $TR '[[a-z]]' '[[A-Z]]' 2>/dev/null | grep ABCDEF`"

TRCLASS="`echo ABCdef | $TR '[[:lower:]]' '[[:upper:]]' 2>/dev/null | grep ABCDEF`"

if test "$TRSTRINGS" = "ABCDEF"; then

TRARGS="'[[a-z]]' '[[A-Z]]'"

elif test "$TRCLASS" = "ABCDEF"; then

TRARGS="\"[[:lower:]]\" \"[[:upper:]]\""

TRARGS="'[[:lower:]]' '[[:upper:]]'"

else

AC_MSG_ERROR("Can\'t find method to covert from upper to lower case with tr")

fi