I am building ioq3 148603c95162468bf14a30d92593312b3e6570b7 on Slackware 14.1 following these steps: http://ioquake3.org/get-it/source-codes/
After typing "make", I got:
"code/client/../sys/sys_loadlib.h:39:19: fatal error: SDL.h: No such file or directory"
That's strange because if I understand the content of the "sys_loadlib.h" file, I can see that it is only if the "USE_LOCAL_HEADERS" variable is set that the "SDL.h" file is included... So, it should include <SDL.h> instead of "SDL.h" in my case... So, why this error please?