BUILDING ON X11 (MacOS X,Linux,FreeBSD,UN*X derivates)
======================================================

Several options can be tweaked from R INSTALL

$ R CMD INSTALL [ --configure-args=<ARGS> ] rgl


BUILD OPTIONS
-------------
  --x-includes=<path>
    X11 C header files include path

  --x-libraries=<path>
    X11 library linkage path

  --with-gl-includes=<path>
    GL C header files include path

  --with-gl-libraries=<path>
    GL library linkage path

  --with-gl-prefix=<libprefix>
    GL library prefix (e.g. Mesa)
  
  --disable-png
    explicitly do not use png pixmap format


