[zem]

s7 scheme is pretty trivial to embed in a c project, it consists of an s7.c and s7.h file that you just add to your source tree, no other dependencies. https://ccrma.stanford.edu/software/snd/snd/s7.html

[Turing_Machine]

S7 is definitely the way to go if you want to embed Scheme with the absolute minimum of hassle.