* Don't require DESTDIR when -b is set.
* Add -n option, which prints the commands that would be run by build.sh,
but doesn't run them (much like make's -n option).
* Auto-resolve relative paths for -D, -R, and -T (but not for the
corresponding environment variables).
* Explicitly declare defaults of all shell variables used where feasible,
rather than sprinkling ${varname-value} expansions.
* Prefix shell true/false variables with "do_" to indicate their use as
actual values in shell expressions (like "$do_buildsystem && echo foo").
If a machine is not known, abort.
- Emulate "mkdir -p" for Old "mkdir" programs on some host OS's.
- Add "-a" option to provide MACHINE_ARCH explicitly (for MACHINEs
that are capable of having more than one MACHINE_ARCH, such as sh3
and sparc64)
- Where "getopts" is not available in the shell, try using "getopt".
It's not whitespace compatible, but works in most cases.
- Rename "bmake" to "nbmake" per suggestions.
- When building nbmake, create a temporary directory for the purpose
of holding host compiler objects that might be created in the cwd.
Delete this directory if aborted via sh's "trap".
- Create a wrapper script in $TOOLDIR/bin called "nbmake-$MACHINE",
which can be run by hand for building parts of a cross tree easily.
Use this script when finally starting the build.