Error during hostapd compilation.

Hi,

I am getting following error when building hostspd.

In file included from ieee802_1x.c:34:
md5.h:6:25: openssl/md5.h: No such file or directory
make: *** [ieee802_1x.o] Error 1

I have enabled the CONFIG_RADIUS_SERVER option in .config file, as i 
will need that in testing later.
First i thought may be i have to install openssl, but when i try to 
install openssl(yum install openssl) it says, already installed and 
openssl command also works.
but i am not able to locate this md5.h file.
My system is FC3.

Any help is appreciated.

sonu.