rob@rob-desktop:~/Desktop/quake2world-snapshot$ fgrep SDL src/Makefile
SDL_CFLAGS = -I/usr/local/include/SDL -D_GNU_SOURCE=1 -D_REENTRANT
SDL_CONFIG = /usr/local/bin/sdl-config
SDL_LIBS = -L/usr/local/lib -Wl,-rpath,/usr/local/lib -lSDL -lpthread
quake2world_CFLAGS = -pipe  -Wall -Werror -I/usr/local/include/SDL -D_GNU_SOURCE=1 -D_REENTRANT  -I/include  -I/include
quake2world_LDADD = -L/usr/local/lib -Wl,-rpath,/usr/local/lib -lSDL -lpthread  -L/lib  -L/lib -lz -lm -ldl
rob@rob-desktop:~/Desktop/quake2world-snapshot$