...
checking CXXFLAGS for maximum warnings... -Wall
checking gcc version... 4.1.1
checking for sdl-config... no
checking for SDL - version >= 1.2.6... no
*** The sdl-config script installed by SDL could not be found
*** If SDL was installed in PREFIX, make sure PREFIX/bin is in
*** your path, or set the SDL_CONFIG environment variable to the
*** full path to sdl-config.
configure: error: *** SDL version 1.2.6 not found!