sdlmame includes *mmintrin.h headers from gcc which can't be compiled
with -Wsystem-headers (now system default) -Werror (set by the port).
While here remove useless gcc4 MODULES stanzas (port is only for
i386/amd64), switch to newer WANTLIB/LIB_DEPENDS/REVISION idioms.
with tweaks from ajacoutot@, ok ajacoutot@ & MAINTAINER.
MAME stands for Multi Arcade Machine Emulator. As the name suggests, it
is a program that emulates the hardware (and low-level firmware) of a
massive variety of arcade machines.
SDLMAME is a port of MAME using the SDL library.
After many submissions and updates by Pierre Riteau (at gmail), thanks!