I am using macbook pro that runs on OS X Yosemite 10.10.1. I downloaded and installed GLUI 2.35 framework from here GLUI 2.35 and wrote a makefile to rum my c++ program but I got an error the no <GLUI/glui.h> can be found so I made a directory and included the glui.h file there: 
/usr/inlcude/GLUI/glui.h
In the makefile I wrote:
FRAMEWORKS = (some other framewords I use) -framework GLUI
Then I got a linker error that framework GLUI is not found. 
I checked /Library/Frameworks/ and indeed GLUI.framework is there. 
Am I not including GLUI framework correctly?