rob@rob-desktop:~/Desktop/quake2world-snapshot$ make
make  all-recursive
make[1]: Entering directory `/home/rob/Desktop/quake2world-snapshot'
Making all in data
make[2]: Entering directory `/home/rob/Desktop/quake2world-snapshot/data'
Making all in default
make[3]: Entering directory `/home/rob/Desktop/quake2world-snapshot/data/default'
make[3]: Nothing to be done for `all'.
make[3]: Leaving directory `/home/rob/Desktop/quake2world-snapshot/data/default'
make[3]: Entering directory `/home/rob/Desktop/quake2world-snapshot/data'
make[3]: Nothing to be done for `all-am'.
make[3]: Leaving directory `/home/rob/Desktop/quake2world-snapshot/data'
make[2]: Leaving directory `/home/rob/Desktop/quake2world-snapshot/data'
Making all in src
make[2]: Entering directory `/home/rob/Desktop/quake2world-snapshot/src'
Making all in .
make[3]: Entering directory `/home/rob/Desktop/quake2world-snapshot/src'
gcc -DHAVE_CONFIG_H -I. -I. -I..     -g -O2 -c gl_sdl.c
gl_sdl.c:22:17: error: SDL.h: No such file or directory
gl_sdl.c:27: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token
gl_sdl.c:127: error: expected ‘)’ before ‘*’ token
gl_sdl.c:329: error: expected ‘)’ before ‘*’ token
gl_sdl.c: In function ‘IN_HandleEvents’:
gl_sdl.c:379: error: ‘SDL_Event’ undeclared (first use in this function)
gl_sdl.c:379: error: (Each undeclared identifier is reported only once
gl_sdl.c:379: error: for each function it appears in.)
gl_sdl.c:379: error: expected ‘;’ before ‘event’
gl_sdl.c:381: error: ‘surface’ undeclared (first use in this function)
gl_sdl.c:385: error: ‘event’ undeclared (first use in this function)
gl_sdl.c:390: error: ‘SDL_GRAB_OFF’ undeclared (first use in this function)
gl_sdl.c:395: error: ‘SDL_GRAB_ON’ undeclared (first use in this function)
gl_sdl.c: In function ‘GL_SetIcon’:
gl_sdl.c:447: error: ‘SDL_Surface’ undeclared (first use in this function)
gl_sdl.c:447: error: ‘icon’ undeclared (first use in this function)
gl_sdl.c:448: error: ‘SDL_Color’ undeclared (first use in this function)
gl_sdl.c:448: error: expected ‘;’ before ‘color’
gl_sdl.c:449: error: ‘Uint8’ undeclared (first use in this function)
gl_sdl.c:449: error: ‘ptr’ undeclared (first use in this function)
gl_sdl.c:453: error: ‘SDL_SWSURFACE’ undeclared (first use in this function)
gl_sdl.c:460: error: ‘SDL_SRCCOLORKEY’ undeclared (first use in this function)
gl_sdl.c:462: error: ‘color’ undeclared (first use in this function)
gl_sdl.c:468: error: expected expression before ‘)’ token
gl_sdl.c: In function ‘GL_InitGraphics’:
gl_sdl.c:487: error: ‘SDL_INIT_AUDIO’ undeclared (first use in this function)
gl_sdl.c:487: error: ‘SDL_INIT_VIDEO’ undeclared (first use in this function)
gl_sdl.c:497: error: ‘surface’ undeclared (first use in this function)
gl_sdl.c:499: error: ‘SDL_FULLSCREEN’ undeclared (first use in this function)
gl_sdl.c:513: error: ‘SDL_GL_RED_SIZE’ undeclared (first use in this function)
gl_sdl.c:514: error: ‘SDL_GL_GREEN_SIZE’ undeclared (first use in this function)
gl_sdl.c:515: error: ‘SDL_GL_BLUE_SIZE’ undeclared (first use in this function)
gl_sdl.c:516: error: ‘SDL_GL_DEPTH_SIZE’ undeclared (first use in this function)
gl_sdl.c:517: error: ‘SDL_GL_DOUBLEBUFFER’ undeclared (first use in this function)
gl_sdl.c:519: error: ‘SDL_OPENGL’ undeclared (first use in this function)
gl_sdl.c:527: error: ‘SDL_DEFAULT_REPEAT_DELAY’ undeclared (first use in this function)
gl_sdl.c:528: error: ‘SDL_DEFAULT_REPEAT_INTERVAL’ undeclared (first use in this function)
gl_sdl.c: In function ‘GL_ShutdownGraphics’:
gl_sdl.c:563: error: ‘surface’ undeclared (first use in this function)
gl_sdl.c:568: error: ‘SDL_INIT_EVERYTHING’ undeclared (first use in this function)
gl_sdl.c:568: error: ‘SDL_INIT_VIDEO’ undeclared (first use in this function)
make[3]: *** [gl_sdl.o] Error 1
make[3]: Leaving directory `/home/rob/Desktop/quake2world-snapshot/src'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/home/rob/Desktop/quake2world-snapshot/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/rob/Desktop/quake2world-snapshot'
make: *** [all-recursive-am] Error 2
rob@rob-desktop:~/Desktop/quake2world-snapshot$