How to build the plugins:

gcc sindemo.c -fPIC -DPIC -o sindemo.o -c -Wall -ansi -pedantic
ld -o sindemo.so -shared sindemo.o
gcc cosdemo.c -fPIC -DPIC -o cosdemo.o -c -Wall -ansi -pedantic
ld -o cosdemo.so -shared cosdemo.o
gcc scalardemo.c -fPIC -DPIC -o scalardemo.o -c -Wall -ansi -pedantic
ld -o scalardemo.so -shared scalardemo.o


