[CM] s7 on raspberry pi

[Bill Schottstaedt]

mus-config.h can be empty, or you can comment out that
#include statement in s7.c.  Here I am in a clean s7 directory:

/home/bil/snd-15/ touch mus-config.h
/home/bil/snd-15/ wc mus-config.h
0 0 0 mus-config.h
/home/bil/snd-15/ gcc -c s7.c -I.

If you want to make a repl, you could use

gcc -o repl repl.c s7.o -Wl,-export-dynamic -lm -I. -ldl

s7.c itself has very few dependencies -- libm mainly.
You can remove the -ldl stuff by setting WITH_C_LOADER
to 0 (I think).