The world is STDC.

build/unproto/Makefile

build/unproto/README

build/unproto/acc.sh

build/unproto/cpp.sh

build/unproto/error.c

build/unproto/error.h

build/unproto/example.c

build/unproto/example.out

build/unproto/hash.c

build/unproto/stdarg.h

build/unproto/stddef.h

build/unproto/stdlib.h

build/unproto/strsave.c

build/unproto/symbol.c

build/unproto/symbol.h

build/unproto/tok_class.c

build/unproto/tok_io.c

build/unproto/tok_pool.c

build/unproto/token.h

build/unproto/unproto.1