okay so i downloaded _all_ of the plugins. here are the compilation results after makefile tweaking:
mupen64_input: compiled fine and i put the .so in the plugins folder
mupen64_sound: did not compile at all but i didn't think so since its too tied to linux sound.
riceplugin: after adding that assert.h include it compiled up until:
g++ -DUSE_GTK `sdl-config --cflags` `gtk-config --cflags` -O3 -mcpu=athlon -ffast-math -funroll-loops -fomit-frame-pointer -msse -mmmx -c -o DecodedMux.o DecodedMux.cpp
DecodedMux.cpp:763: error: integer constant is too large for "long" type
gmake: *** [DecodedMux.o] Error 1
rats. :/
rsp_hle: seemed to compile fine until linking then there was a gigantic list of undefined references

it seems a bit too bit to paste here. on the other hand, the .so file still was created so i stuck it in the plugins folder for the hell of it
trgl64: same as rsp plugin
blight_input: havent tried it yet
well thats all for now, if anyone wants the huge list of undefined errors email me ryan (at) slipgate (dot) org
thanks,
- ryan