Cannot make ODBC support like cdr_odbc,fnc_odbc

i have installed all the required packages given in the documentation like unixODBC-devel and libtool

but while installing Asterisk when i make menuselect
in the “call detail recording” i can’t select cdr_odbc
and in “dialplan functions” i can’t select func_odbc

they indicate some missing dependency…??

i have installed all the packages given in the O’rellily;s documentation book

can any1 please help on this because i would need to connect to a mysql database in my application!

please help!
thanks in advance