Can't find X11 headers in CentOS 6.4
I have recently upgraded to new computer and CentOS 6.4
I was using CentOS 5.1 and compiling C++ programs that
required X11R6 header files and libraries. I can't find
these in 6.4 although I've looked all over the place.
It looks like X11 is installed (it come with the distribution
right?) but the gcc compiler says it can't find files like
X11/Xlib.h, X11/Xutil.h, X11/cursorfont.h, etc. 'locate'
returned nothing for these files and all other X11 headers.
Do I need further installation? Please help.