title: error: installation of package ‘rgl’ had non-zero exit status
body: <p>I would like to use plot 3D so I was trying to download rgl but whenever I am trying to install this,  I am getting this error in rgl package installation. So can you please suggest me something. </p>
  
  <pre><code>install.packages("rgl", dependencies=TRUE)
       Installing package into ‘/root/R/x86_64-unknown-linux-gnu-library/3.2’
       (as ‘lib’ is unspecified)
       --- Please select a CRAN mirror for use in this session ---
  trying URL 'http://cran.skazkaforyou.com/src/contrib/rgl_0.95.1247.tar.gz'
  Content type 'application/x-gzip' length 2014799 bytes (1.9 MB)
  ==================================================
  downloaded 1.9 MB
  
  * installing *source* package ‘rgl’ ...
  ** package ‘rgl’ successfully unpacked and MD5 sums checked
  checking for gcc... gcc -std=gnu99
  checking whether the C compiler works... yes
  checking for C compiler default output file name... a.out
  checking for suffix of executables... 
  checking whether we are cross compiling... no
  checking for suffix of object files... o
  checking whether we are using the GNU C compiler... yes
  checking whether gcc -std=gnu99 accepts -g... yes
  checking for gcc -std=gnu99 option to accept ISO C89... none needed
  checking how to run the C preprocessor... gcc -std=gnu99 -E
  checking for gcc... (cached) gcc -std=gnu99
  checking whether we are using the GNU C compiler... (cached) yes
  checking whether gcc -std=gnu99 accepts -g... (cached) yes
  checking for gcc -std=gnu99 option to accept ISO C89... (cached) none needed
  checking whether __attribute__((visibility())) is supported... yes
  checking whether gcc -std=gnu99 accepts -fvisibility... yes
  checking whether  accepts -fvisibility... no
  checking for libpng-config... yes
  configure: using libpng-config
  configure: using libpng dynamic linkage
  checking for X... libraries , headers 
  checking GL/gl.h usability... no
  checking GL/gl.h presence... no
  checking for GL/gl.h... no
  checking GL/glu.h usability... no
  checking GL/glu.h presence... no
  checking for GL/glu.h... no
  configure: error: missing required header GL/gl.h
  ERROR: configuration failed for package ‘rgl’
  * removing ‘/root/R/x86_64-unknown-linux-gnu-library/3.2/rgl’
  
  The downloaded source packages are in
  ‘/tmp/RtmpP1KuPN/downloaded_packages’
  Warning message:
  In install.packages("rgl", dependencies = TRUE) :
        installation of package ‘rgl’ had non-zero exit status
  </code></pre>