Due to a slip-up in build.sh (compiling flmain.c instead of flisp.c multiple
times), making changes in the Scheme core would require two build.sh runs
instead of one to end up in the final executable. flisp.c is the C file that
includes boot_image.h so it's the one that should get compiled multiple times.
I planned to put just the file system routines into these files, but
there are starting to be so many of them that I don't want to
duplicate the same set for networking, subprocesses etc.
Stage 0 is supposed to emit compiled versions of system.scm and
compiler.scm. The compiler.scm bytecode wasn't emitted properly
because the emitter put the two files' bytecode in two separate C
variables instead of concatenating them into the same variable as they
should be.
Previously the boot image was kept in the separate file "flisp.boot".
This caused all kinds of problems, as bootstrapping is wont to do. The
biggest problem was finding a portable and convenient pathname for it.
Instead of dealing with all that stuff about how to find the file,
just store the image in a huge C string constant that goes into the
main executable. This necessitates adding a C-string hex dumper into
the Lisp system, and making build.sh slightly more complicated, but
that's a small price to pay for not having to carry a separate file
everywhere we go. Also, flmain.c is a lot simpler now and we don't
have to play around with symlinks.
R7RS syntax is: (import (library name here))
We translate this into the internal path "library/name/here". This will allow
us to easily load libraries from files later on by appending the ".sld" file
name extension.
This implies that OS names have changed. Unix-like OS names are now
capitalized. "macos" is now "Darwin". Windows is now all-lowecase "windows".
"win32" is gone. "win64" was not used in the original code despite a reference
to it.
John Cowan
Lassi Kortela