jtrobot@jtrobot-gutsy-desktop:~/Desktop/freeglut-2.2.0$ make
make  all-recursive
make[1]: Entering directory `/home/jtrobot/Desktop/freeglut-2.2.0'
Making all in src
make[2]: Entering directory `/home/jtrobot/Desktop/freeglut-2.2.0/src'
source='freeglut_callbacks.c' object='libglut_la-freeglut_callbacks.lo' libtool=yes \
        depfile='.deps/libglut_la-freeglut_callbacks.Plo' tmpdepfile='.deps/libglut_la-freeglut_callbacks.TPlo' \
        depmode=gcc3 /bin/sh ../depcomp \
        /bin/sh ../libtool --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I..     -g -O2 -c -o libglut_la-freeglut_callbacks.lo `test -f freeglut_callbacks.c || echo './'`freeglut_callbacks.c
rm -f .libs/libglut_la-freeglut_callbacks.lo
gcc -DHAVE_CONFIG_H -I. -I. -I.. -g -O2 -c freeglut_callbacks.c -MT libglut_la-freeglut_callbacks.lo -MD -MP -MF .deps/libglut_la-freeglut_callbacks.TPlo  -fPIC -DPIC -o .libs/libglut_la-freeglut_callbacks.lo
freeglut_callbacks.c: In function 'glutDisplayFunc':
freeglut_callbacks.c:54: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutReshapeFunc':
freeglut_callbacks.c:63: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutKeyboardFunc':
freeglut_callbacks.c:72: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutSpecialFunc':
freeglut_callbacks.c:80: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutVisibilityFunc':
freeglut_callbacks.c:143: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutKeyboardUpFunc':
freeglut_callbacks.c:157: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutSpecialUpFunc':
freeglut_callbacks.c:165: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutJoystickFunc':
freeglut_callbacks.c:175: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutMouseFunc':
freeglut_callbacks.c:190: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutMouseWheelFunc':
freeglut_callbacks.c:198: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutMotionFunc':
freeglut_callbacks.c:207: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutPassiveMotionFunc':
freeglut_callbacks.c:216: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutEntryFunc':
freeglut_callbacks.c:224: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutCloseFunc':
freeglut_callbacks.c:232: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutOverlayDisplayFunc':
freeglut_callbacks.c:270: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutWindowStatusFunc':
freeglut_callbacks.c:278: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutSpaceballMotionFunc':
freeglut_callbacks.c:286: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutSpaceballRotateFunc':
freeglut_callbacks.c:294: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutSpaceballButtonFunc':
freeglut_callbacks.c:302: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutButtonBoxFunc':
freeglut_callbacks.c:310: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutDialsFunc':
freeglut_callbacks.c:318: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutTabletMotionFunc':
freeglut_callbacks.c:326: error: invalid lvalue in assignment
freeglut_callbacks.c: In function 'glutTabletButtonFunc':
freeglut_callbacks.c:334: error: invalid lvalue in assignment
make[2]: *** [libglut_la-freeglut_callbacks.lo] Error 1
make[2]: Leaving directory `/home/jtrobot/Desktop/freeglut-2.2.0/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/jtrobot/Desktop/freeglut-2.2.0'
make: *** [all] Error 2