Unable to install R packages rgl & qpcR in sparkR

If you encounter such an error while installing the package rgl in sparkR

configure: using libpng dynamic linkage checking for X... no 
configure: error: X11 not found but required, 
configure aborted.

its because X11 is a windows library and to resolve use:
Ubuntu : 

sudo apt-get install libglu1-mesa-dev

Redhat:

sudo yum install mesa-libGL-devel mesa-libGLU-devel libpng-devel