subhrangshu@SubhrangshuManna:~/BACKUP-OFF-20Nov2022/f03gl-gfort$ make
cc -c -o GLUT_fonts.o GLUT_fonts.c
GLUT_fonts.c:1:10: fatal error: GL/glut.h: No such file or directory
1 | #include “GL/glut.h”
| ^~~~~~~~~~~
compilation terminated.
make: *** [: GLUT_fonts.o] Error 1
I have GLUT.h in the same directory … but how can I get glut.h ?