I install Lirc via
#yum install lirc, lirc-devel
and got lirc_client.h in the folder: /usr/include/lirc/, but I didn't find lirc_client.c in the same folder;
(Question 1)Is this right? Even though I can use remote cotrol for mythtv now. Or lirc_client.c would not appear in the /usr/include/lirc folder in fact even you installed lirc driver,right?

Because we want to build one external application for lirc, so then I tried to complie and install Lirc driver again, but always got the following warning messages:

[root@localhost lirc-0.8.1]# ./configure
which: no dialog in (/usr/kerberos/sbin:/usr/lib/qt-3.3/bin:.:/usr/java/jdk1.5.0_03/bin:/usr/java/jdk1.5.0_03/jre/bin:$/sbin:/usr/lib/qt-3.3/bin:/usr/kerberos/bin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/sbin:/home/mythtv/bin)
dialog not found!

(Question2)How to solve this problem?

Any suggestion would be welcome!
Many thanks to you!