openGL : Fedora 17 : undefined reference to symbol 'cos@@GLIBC_2.0'

1. ERROR:
   
   gcc wave.o -o wave -I/usr/include -L/usr/lib -lglut -lGL -lGLU -lX11 -m32
   /usr/bin/ld: wave.o: undefined reference to symbol 'cos@@GLIBC_2.0'
   /usr/bin/ld: note: 'cos@@GLIBC_2.0' is defined in DSO /lib/libm.so.6 so try adding it to the linker command line
   /lib/libm.so.6: could not read symbols: Invalid operation
   collect2: error: ld returned 1 exit status
2. Solution:
   Add '-lm' flag while compiling.
   
   gcc wave.o -o wave -I/usr/include -L/usr/lib -lglut -lGL -lm  -lGLU -lX11 -m32