Question

I am trying to run someone else’s (4 year old) code from sourceforge. I downloaded cygwin and checked out the project with CVS.

Here is the compile line which is failing:

gcc ../block_display/block_display.c -o block_display -lopengl32 -lglut32 -lm

Here is the relevant include statement in block_display.c:

#include <GL/glut.h>

When I try to run the above compile line, I get this compile error:

$ gcc ../block_display/block_display.c -o block_display -lopengl32 -lglut32 -lm
/usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../../i686-pc-cygwin/bin/ld: cannot find -lglut32
collect2: ld returned 1 exit status

I admit I am new/rusty with cygwin. I tried a few things to get to this point, but since I don’t entirely know where to put files, I am stuck on this error. Here is what I have tried:

1. Downloading all results for ‘glut’ in cygwin setup: libglut-devel, freeglut, libglut3
2. Downloading glut 3.7.6, copying glut32.dll to C:\Windows\SysWOW64, and copying glut.h to C:\cygwin\usr\include. I still have glut.def and glut32.lib sitting around, but I do not know exactly where to place them. I tried following this install guide, but since I am not running VC++, I do not know what the cygwin equivalent of VC++ path is.

Any idea what I could do to get this code to compile successfully? I am running Windows 7 64-bit.

Answer 1

You should use freeglut instead. The original glut is far outdated. Freeglut on the other hand is binary and source compatible with the original glut, and it’s also open source.

Since glut32.dll is a windows DLL and cygwin is for emulating a unix environment on windows, you can’t easily use the original glut with cygwin without recompiling from source.