pgAgent issue on redhat 6.5 for newbie

Hi all,
I'm looking for the whole steps for pgAgent installation on linux redhat 6.5
Tutoriel  do exist  but  too short for newbies.

I followed this steps
1) I downloaded pgAgent-3.40-sources.tar.gz

2) tar -xvzf  pgAgent-3.40-sources.tar.gz

3)  cd  pgAgent-3.40-sources

4) cmake .

so i got error

CMake Error at cmake/FindWX.cmake:267 (MESSAGE):
   The selected wxWidgets configuration (version: 2.8, debug: no,
static: yes,
   unicode: yes, modules: base) is not available.
Call Stack (most recent call first):
   CMakeLists.txt:80 (FIND_PACKAGE)


-- Configuring incomplete, errors occurred!



Thanks lot for help
koff