I had a problem with compiling my new element. Help, anyone?

C:\Program Files\SmartGit 2.1\bin\The-Powder-Toy\includes\graphics.h3error: SDL/SDL.h: No such file or directory

C:\Program Files\SmartGit 2.1\bin\The-Powder-Toy\includes\graphics.h54error: expected '=', ',', ';', 'asm' or '__attribute__' before '*' token

C:\Program Files\SmartGit 2.1\bin\The-Powder-Toy\includes\interface.h77error: 'NULL' undeclared here (not in a function)

C:\Program Files\SmartGit 2.1\bin\The-Powder-Toy\includes\interface.h175error: expected '=', ',', ';', 'asm' or '__attribute__' before 'sdl_mod'

=== Build finished: 4 errors, 0 warnings ===

EDIT

Oh. Actually I didn't. Thanks!