mcrypt_module_open

Hello, I could really use some help with this.... I am building a machine on the RedHat 6.2 OS. I have installed Apache, Mysql, PHP (with mcrypt and mhash), and imap. I had no error messages when installing any of the above, however when I configure PHP --with-mcrypt it will not find the mcrypt_module_open and I get the following line in the config.cache: ac_cv_lib_mcrypt_mcrypt_module_open=${ac_cv_lib_mcrypt_mcrypt_module_open='n o'} Then, when I try to use the mcrypt_module_open function in a php program, I get the message fatal error: call to undefined function: mcrypt_module_open() I have tried the few suggestions I found surfing the web...ldconfig and the like...with no change. Please Help...very frustrating... Steve Higgins