This is analogous to PLT_SETUP_OPTIONS, but for the `raco pkg update`
step. This is useful for adding an option like `--pull try` to ignore
failures to update local clones.
The top-level makefile now builds Racket CS as `racket` by default.
Use `racket bc` to build Racket BC as `racket`. Use `make both` to
build both CS and BC (the latter with the `bc` suffix) overlayed in a
single build. By using `make both` insted of `make cs` plus `make bc`,
you can avoid redundant package downloads and documentation rendering.
To build Racket BC as `racket`, use `racket bc RACKETBC_SUFFIX=`, but
you must consistently use `RACKETBC_SUFFIX=` with `make` every time.
Adjust `configure` and makefiles so that `configure` can be run in an
directory, not just the source directory. Initial boot files are found
at either the current directory or the source directory.
Also, add support for `-B` and `--Boot` flags to accept a path that is
resolved relative to the current directory, instead of relative to the
installation.
The `--enable-cs` and `--enable-csdefault` flags now enabled just the
CS build, as long as pb boot files are present or
`--enable-racket=...` is supplied.
Currently, `make` is the same as `make bc`, but the idea is that
`make` can become the same as `make cs` when some other pieces are in
place.
The source of the top-level makefile is now ".makefile", and it's
turned into "Makefile" using "racket/src/makemake.rkt". The
transformation makes non-GNU `make` variants and `nmake` act like GNU
make to propagate variables, which makes abstraction through targets
plus variables (admitedly an abuse of `make`) more reliable and
consistent.
Why abuse `make` this way? Because `make` variants and `nmake` are
similar enough that to constitute a portable scripting language, and
one that conveniently provides a large number of entry points.
Also, schemified "thread", "io", "regexp", "schemify", and "expander"
layers are checked in. Overall, building Racket CS no longer requires
first building Racket BC.
The imported sources are from the `racket/ChezScheme` repository,
which branched from `cisco/ChezScheme`. The commit history is
preserved, but all of the commit IDs have shifted, because bootfiles
have been pruned from the history.
